JP2016061510A - Multitubular heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the pressure loss of a body-side fluid.SOLUTION: A multitubular heat exchanger comprises a tube group 8 of heat transfer tubes 9 provided in an annular tube-group installation region 7 except for a central portion within a body 6 of a container 1. In the tube-group installation region 7, three sections 7a, 7b, and 7c divided by baffles 14a, 14b, and 14c are formed in a circumferential direction. A flow route of a body-side fluid 13 is formed by connecting inner-circumferential opening portions 16a and 16b near the other end of each of the sections 7a and 7b in a container axial direction to each other by an inner-circumferential connection flow passage 17 and by connecting outer-circumferential opening portions 15b and 15c near one end of each of the sections 7b and 7c in the container axial direction to each other by an outer-circumferential connection flow passage 18. When the body-side fluid 13 is made to flow along the flow route, pressure loss is reduced by causing the body-side fluid 13 to flow within the sections 7a, 7b and 7c in the container axial direction along tube axis of the heat transfer tubes 9.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a multi-tube heat exchanger used for heat exchange between a fluid flowing through a plurality of heat transfer tubes and another fluid flowing outside the heat transfer tubes.

  A multi-tube heat exchanger, which is one of the heat exchangers, is provided with a tube group including a plurality of heat transfer tubes arranged in parallel in the body of a container (shell).

  Baffles (also referred to as baffle plates or baffle plates) are provided at a plurality of locations in the longitudinal direction of the tube group. As this kind of baffle, a segment type baffle is widely used, but it is called a disk and donut type in which a disk-shaped (disk-shaped) baffle and a donut-shaped (ring-shaped) baffle are alternately arranged. The thing is also used (for example, refer patent document 1).

  Conventional multi-tube heat exchangers equipped with these baffles are the heats of the tube-side fluid that circulates through the heat transfer tubes of the tube group and the cylinder-side fluid that is in contact with the outer surface of each heat transfer tube in the shell of the shell. When exchange is performed, the flow of the trunk side fluid is sequentially folded by each baffle so that it always flows in a direction perpendicular to the longitudinal direction of each heat transfer tube, that is, a tube group cross flow and strikes each heat transfer tube. It is.

JP 2006-510471 A

  However, the conventional multi-tube heat exchanger equipped with the segment type or disk and donut type baffle repeatedly generates a cross flow of the tube group that is sequentially folded by each baffle in the flow of the trunk side fluid. Therefore, the pressure loss of the trunk side fluid tends to increase.

  Accordingly, the present invention is intended to provide a multi-tube heat exchanger that can reduce the pressure loss of the trunk side fluid.

  In order to solve the above-mentioned problems, the present invention provides a multi-tube heat exchanger for exchanging heat between a first fluid that circulates in the heat transfer tube and a second fluid that circulates outside the heat transfer tube. A first fluid distribution header formed by partitioning with a tube plate at one end in the axial direction in the container, and formed by partitioning with another tube plate at the other end in the axial direction in the container. The first fluid collective header, a tube group installation region set in an annular shape in the space inside the cylinder located between the tube plates in the container, and the axis of the container disposed in the tube group installation region A tube group formed of a plurality of heat transfer tubes parallel to the center direction and a plurality of circumferential locations in the tube group installation region are partitioned in the circumferential direction by partitioning with baffles parallel to the axial direction of the container and along the radial direction. A plurality of compartments, and the container axis direction on the outer peripheral side and inner peripheral side of each compartment An outer peripheral side connection flow having an outer peripheral side opening and an inner peripheral side opening provided at a shifted position, and connecting the outer peripheral side openings of two sections adjacent in the circumferential direction at positions along the outer surface of the trunk One or both of the inner peripheral side connection flow paths that connect the inner peripheral side openings of the two adjacent sections in the road or the circumferential direction through the space inside the tube group installation region, and at least two sections A multitubular heat exchanger having a configuration including a connected second fluid flow path is provided.

  Moreover, in the said structure, it is preferable that each division shall be the structure provided with the outer peripheral side opening part and the inner peripheral side opening part in the one end side and other end side of a container axial direction.

  Similarly, in the above configuration, each section includes an outer peripheral side opening in the middle portion in the container axial direction, and an inner peripheral side opening in both ends in the container axial direction. It is preferable.

  Furthermore, in each said structure, it is good also as a structure with which each heat exchanger tube is filled with the catalyst.

  According to the multi-tube heat exchanger, the pressure loss of the trunk side fluid can be reduced.

1 shows a first embodiment of a multi-tubular heat exchanger, (a) is a schematic cross-sectional view at a container axial center position, (b) is a cross-sectional view taken along line AA in (a), (c). [FIG. 2] is a sectional view taken along the line B-B in (a). FIG. 2 is a schematic diagram showing a section formed in a tube group installation region of the multi-tube heat exchanger of FIG. 1 in an expanded manner. The application example of 1st Embodiment is shown, (a) (b) (c) is a figure corresponding to Fig.1 (a) (b) (c). The 2nd Embodiment of a multi-tubular heat exchanger is shown, (a) is a schematic sectional drawing in a container axial center position, (b) is CC sectional view taken on the arrow direction of (a), (c). [FIG. 2] is a cross-sectional view taken along line DD in (a). It is a schematic diagram which expands and shows the division formed in the tube group installation area | region of the multitubular heat exchanger of FIG. A 3rd embodiment of a multitubular heat exchanger is shown, (a) is a schematic sectional view in a container axis position, (b) is an EE direction arrow sectional view of (a), (c). [FIG. 2] is a sectional view taken along the line FF in FIG. It is the schematic which expand | deploys and shows the division formed in the tube group installation area | region of the multitubular heat exchanger of FIG. The 4th Embodiment of a multitubular heat exchanger is shown, (a) (b) is a figure corresponding to FIG.1 (b) (c). The 1st modification of 4th Embodiment is shown, (a) (b) is a figure corresponding to Fig.8 (a) (b). The 2nd modification of 4th Embodiment is shown, (a) (b) is a figure corresponding to Fig.8 (a) (b). The 5th Embodiment of a multi-tube heat exchanger is shown, (a) (b) is a figure corresponding to FIG.4 (b) (c). The modification of 5th Embodiment is shown, (a) (b) is a figure corresponding to FIG. 11 (a) (b). The 6th Embodiment of a multi-tube heat exchanger is shown, (a) (b) is a figure corresponding to Fig.11 (a) (b). The 1st modification of 6th Embodiment is shown, (a) (b) is a figure corresponding to Fig.13 (a) (b). The 2nd modification of 6th Embodiment is shown, (a) (b) is a figure corresponding to Fig.13 (a) (b). 7 shows a seventh embodiment of the multi-tube heat exchanger, (a) is a schematic cross-sectional view at the container axial center position, (b) is a cross-sectional view taken along the GG direction of (a), (c). [FIG. 2] is a cross-sectional view taken along line HH in (a). It is the schematic which expand | deploys and shows the division formed in the tube group installation area | region of the multitubular heat exchanger of FIG. The 8th Embodiment of a multi-tube heat exchanger is shown, (a) (b) (c) is a figure corresponding to FIG. 1 (a) (b) (c).

  The multi-tube heat exchanger of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 shows a first embodiment of a multi-tube heat exchanger, FIG. 1 (a) is a schematic cross-sectional view at a container axial center position, and FIG. 1 (b) is A in FIG. 1 (a). -A direction arrow sectional drawing, FIG.1 (c) is a BB direction arrow sectional drawing of Fig.1 (a).

  The multitubular heat exchanger of the present embodiment includes a cylindrical container 1 as shown in FIGS.

  A distribution header 3 for the tube-side fluid 12 as the first fluid partitioned by the tube plate 2 is provided at a position near one end in the axial direction in the container 1 (the position near the upper end in FIG. 1A). . An assembly header 5 of the tube-side fluid 12 partitioned by another tube plate 4 is provided at a location near the other end in the axial direction in the container 1 (location near the lower end in FIG. 1A). The direction along the axis of the container 1 is simply referred to as the container axis direction.

  A cylindrical portion located between the tube sheets 2 and 4 in the container 1 is a barrel 6. In the space part inside the trunk 6, an area excluding the central part is an annular tube group installation area 7.

  The tube group installation region 7 is provided with a tube group 8 including a plurality of heat transfer tubes 9 arranged in parallel to the container axial direction.

  The number of heat transfer tubes 9 and the interval between the heat transfer tubes 9 shown in FIGS. 1A, 1B, and 1C are for convenience of illustration, and the actual number of heat transfer tubes 9 and It does not reflect the interval between the heat tubes 9. For convenience of illustration, the number of heat transfer tubes 9 and the arrangement of the heat transfer tubes 9 are different in FIGS. 1A and 1B and 1C (the same applies to the drawings of the embodiments described later). .

  One end of each heat transfer tube 9 is connected to the distribution header 3 through the tube plate 2. The other end of each heat transfer tube 9 is connected to the collective header 5 through the tube plate 4.

  A tube-side fluid inlet 10 that communicates with the distribution header 3 is provided at one end of the container 1 in the axial direction. On the other hand, a tube-side fluid outlet 11 communicating with the collective header 5 is provided at the other end in the axial direction of the container 1. As a result, the pipe-side fluid 12 supplied from a pipe-side fluid supply unit (not shown) connected to the upstream side of the pipe-side fluid inlet 10 flows into the distribution header 3 through the pipe-side fluid inlet 10. And then supplied to the heat transfer tubes 9 forming the tube group 8. The tube-side fluid 12 supplied to each heat transfer tube 9 passes through each heat transfer tube 9, and a trunk-side fluid 13 as a second fluid described later that contacts the outer surface of each heat transfer tube 9, and each heat transfer tube 9. Heat is indirectly exchanged through the tube wall of the heat tube 9. After passing through each heat transfer tube 9, the tube side fluid 12 is collected by the assembly header 5 and then taken out of the container 1 through the tube side fluid outlet 11. The pipe-side fluid 12 taken out of the container 1 may be sent to a demand destination or a collection unit of the pipe-side fluid 12 (not shown) connected to the downstream side of the pipe-side fluid outlet 11.

  The tube group installation region 7 has baffles (baffle plates) 14a, 14b, 14c at a plurality of locations at equal intervals in the circumferential direction, for example, at three intervals of 120 ° in the circumferential direction as shown in FIGS. Is provided. These baffles 14a, 14b, and 14c extend along the radial direction of the container 1 from the inner peripheral side end of the tube group installation region 7 to a position in contact with the inner surface of the barrel 6 of the container 1 in a plane parallel to the container axial direction. It is a rectangular plate that extends. Thereby, in the tube group installation region 7, three sections 7a, 7b, and 7c partitioned by the baffles 14a, 14b, and 14c are arranged in the circumferential direction.

  Although not shown, each baffle 14a, 14b, 14c is attached to each tube plate 2 and 4 at the end located on both ends in the container axial direction. As shown in FIGS. 1B and 1C, the end portions of the baffles 14 a, 14 b, 14 c located near the outer periphery of the container 1 are attached to the inner surface of the barrel 6.

  Each baffle 14a, 14b, 14c is arranged so as not to interfere with each heat transfer tube 9 of the tube group 8.

  For example, when the arrangement of the heat transfer tubes 9 in the tube group 8 is a triangular arrangement (staggered arrangement) having equilateral triangles as a unit as shown in FIGS. The locations where the gaps between the heat transfer tubes 9 continuously extend in the radial direction of the container 1 are formed at six locations at intervals of 60 degrees in the circumferential direction. At each location where there is a continuous gap in the radial direction of the container 1, the barrel-side fluid 13 supplied to the tube group installation region 7 is more likely to pass along the radial direction of the vessel 1 than at other locations. .

  In view of this point, it is desirable that the baffles 14 a, 14 b, 14 c be arranged at three of the six locations where the gaps between the heat transfer tubes 9 continuously extend in the radial direction of the container 1. This is because the baffles 14a, 14b, and 14c are arranged at locations where the gaps between the heat transfer tubes 9 continuously extend in the radial direction of the vessel 1, thereby along the radial direction of the vessel of the trunk side fluid 13 at the location. This is to suppress the flow. Therefore, according to such arrangement of the baffles 14a, 14b, and 14c, it is possible to suppress a phenomenon in which the trunk-side fluid 13 locally passes in the direction along the radial direction of the container 1 in the tube group installation region 7. .

  Next, the flow path of the trunk side fluid 13 passing through the sections 7a, 7b, 7c formed in the tube group installation region 7 as described above will be described.

  FIG. 2 is a diagram for explaining the outline of the flow path of the trunk side fluid 13, and shows three sections 7 a, 7 b, 7 c formed in the tube group installation region 7 in the trunk 6 of the container 1 in the circumferential direction. Shown separated and unfolded. In addition, in FIG. 2, each division 7a, 7b, 7c is shown with the perspective view as a state by which the inner peripheral part is arrange | positioned at this side, and an outer peripheral part is located in the back | inner side. In FIG. 2, the same components as those shown in FIGS. 1A, 1B, and 1C are denoted by the same reference numerals. In FIG. 2, for convenience of illustration of the sections 7a, 7b, and 7c, the baffles 14a, 14b, and 14c, portions other than the body 6 of the container 1, the tube plate 2, and the heat transfer tube 9 are omitted. is there.

  Each of the compartments 7a, 7b, and 7c is located at a position shifted in the container axial direction between the outer peripheral part and the inner peripheral part, for example, as shown by hatching in FIG. Outer peripheral side openings 15a, 15b, and 15c at the end portion (the end portion near the upper end in FIG. 2) and the end portion near the other end in the container axial direction in the inner peripheral portion (the end portion near the lower end in FIG. 2), Inner peripheral openings 16a, 16b, and 16c are provided. Specific configurations of the outer peripheral side and inner peripheral side openings 15a, 15b, 15c and 16a, 16b, 16c will be described later.

  Among the three sections 7a, 7b, 7c arranged in the circumferential direction, adjacent sections 7a and 7b are the inner peripheral side where the inner peripheral side openings 16a and 16b are provided inside the sections 7a and 7b. They are connected via a connection channel 17. Further, the adjacent sections 7 b and 7 c are connected to each other through the outer peripheral side connection flow path 18 provided on the outer side of the body 6 of the container 1. Specific configurations of the inner peripheral connection channel 17 and the outer peripheral connection channel 18 will be described later.

  As described above, in the tube group installation region 7, the inner space of the partition 7a, the inner peripheral opening 16a, the inner peripheral connection channel 17, the inner peripheral opening 16b, and the inner part of the partition 7b from the outer peripheral opening 15a. The flow path of the trunk side fluid 13 connected in series through the space, the outer periphery side opening 15b, the outer periphery side connection flow path 18, the outer periphery side opening 15c, and the inner space of the section 7c to the inner periphery side opening 16c. It is formed.

  Thereby, in the compartments 7a and 7c, as shown in FIG. 2, the trunk side fluid 13 flowing in from the outer peripheral side openings 15a and 15c provided at the end near the one end in the container axial direction, It flows toward the inner peripheral side openings 16a and 16c provided at the end near the end.

  Further, in the section 7b, the trunk side fluid 13 flowing from the inner peripheral side opening 16b provided at the end near the other end in the container axial direction is the outer peripheral side provided at the end near the one end in the container axial direction. It flows toward the opening 15b.

  Therefore, in each of the sections 7a, 7b, and 7c, the trunk-side fluid 13 that circulates as described above is in contact with the outer surface of the plurality of heat transfer tubes 9 (see FIGS. 1A, 1B, and 1C), and each transfer It is used for heat exchange with the tube-side fluid 12 that circulates in the heat tube 9.

  At this time, the trunk side fluid 13 flows in a direction perpendicular to each heat transfer tube 9 (the tube group cross flow) when the resistance generated when the barrel side fluid 13 flows in the container axial direction parallel to the tube axis of each heat transfer tube 9. ) Becomes smaller than the resistance generated when

  Therefore, as shown in FIG. 2, an outline of the flow direction of the trunk side fluid 13 in each section 7 a, 7 b, 7 c, the flow of the trunk side fluid 13 in each section 7 a, 7 b, 7 c , 15b, 15c and the inner circumferential side openings 16a, 16b, 16c are provided in the regions near the both ends in the axial direction of the container. , 7c, the flow is mainly along the container axis direction in the region of the middle part in the container axis direction.

  Next, specific configurations of the outer peripheral side openings 15a, 15b, 15c, the inner peripheral side openings 16a, 16b, 16c, the inner peripheral side connection flow path 17, and the outer peripheral side connection flow path 18 will be described. To do.

  As shown in FIGS. 1 (a), 1 (b) and 2, the outer peripheral side openings 15a, 15b, 15c are provided at the ends of the barrel 6 of the container 1 near one end in the container axial direction. It is provided to extend in the circumferential direction corresponding to the circumferential angle range of 7c. In addition, two adjacent outer peripheral side openings 15b and 15c connected via the outer peripheral side connection flow path 18 are continuous openings in the circumferential direction in the body 6 of the container 1, as shown in FIG. You may make it form as.

  On the other hand, as shown in FIGS. 1 (a) and 1 (b), the other end of the barrel 6 in the axial direction of the container is located on the inner side of the tube group installation region 7 (center portion of the barrel 6) from the position contacting the tube plate 2. A columnar closing member 19 is provided that extends to the close position. Thereby, the inner peripheral side openings 16 a, 16 b and 16 c are formed as gaps between the end of the closing member 19 near the other end in the container axial direction and the tube plate 4.

  An end of the closing member 19 near one end in the container axial direction is attached to the tube plate 2. Moreover, the edge part located near the center of the container 1 of each baffle 14a, 14b, 14c is attached to the outer peripheral surface of the closing member 19. As shown in FIG. The closing member 19 may have a hollow structure or a solid structure as long as it does not pass the trunk side fluid 13.

  As shown in FIG. 1A, the tube plate 4 is provided with an opening 20 in a central portion that is inside the tube group installation region 7. A tubular member 21 that protrudes inside the collective header 5 along the axial direction of the container 1 is attached to the opening 20. It is assumed that the protruding end portion of the tubular member 21 is closed. Furthermore, one end side of the connection pipe 30 is connected to the tubular member 21. The other end side of the connection pipe 30 protrudes outside through the container wall corresponding to the collective header 5. The other end side of the connecting pipe 30 protruding to the outside is an outlet 30 a for the trunk side fluid 13. In addition, the part by which the connection pipe 30 penetrates and arranges in the container wall shall be sealed.

  Further, as shown in FIGS. 1A and 1C, the space between the end surface near the other end in the container axial direction of the closing member 19 and the opening 20 of the tube plate 4 is inside the tube group installation region 7. The space is provided with an inner peripheral partition member 22 for partitioning the space into a region communicating with both the inner peripheral openings 16a and 16b and a region communicating only with the inner peripheral opening 16c. Yes.

  The inner peripheral partition member 22 connects two flat plates extending along the radial direction of the container 1 from the axial position of the container 1 toward the inner peripheral side ends of the baffles 14 a and 14 c at the axial position of the container 1. It has a shape, and both end portions thereof are attached to the inner peripheral end portions of the baffles 14a and 14c. An end of the inner peripheral partition member 22 near one end in the container axial direction is attached to an end surface of the closing member 19 near the other end in the container axial direction.

  Further, in the opening 20 of the tube plate 4, an area that is partitioned from the tube group installation area 7 so as to communicate with both the inner peripheral side openings 16 a and 16 b by the inner peripheral partition member 22. A closing member 23 (see FIG. 1A) is provided for closing the other end side of the container in the axial direction of the container and preventing communication with the tubular member 21.

  Thus, the inner member is partitioned by the inner peripheral partition member 22 so as to communicate with both the inner peripheral openings 16a and 16b between the end surface of the closing member 19 near the other end in the container axial direction and the closing member 23. This region becomes the inner peripheral side connection flow path 17 described above.

  On the other hand, between the end surface of the closing member 19 near the other end in the axial direction of the container and the opening 20 of the tube plate 4, the inner peripheral part partitioning member 22 was partitioned so as to communicate only with the inner peripheral side opening 16c. The region is an outlet side for collecting the cylinder side fluid 13 flowing out from the inner peripheral side opening 16c located at the downstream end (terminal) in the distribution path of the cylinder side fluid 13 and sending it to the tubular member 21. Header 24.

  As shown in FIGS. 1 (a) and 1 (b), a flange-shaped flow path forming member 25 extending in the circumferential direction along the outer surface of the body 6 is provided at the peripheral edge portions of the outer peripheral side openings 15 b and 15 c on the outer surface of the body 6. However, it is attached in the state arrange | positioned so that each outer peripheral side opening part 15b and 15c may be covered together. The internal space of the flow path forming member 25 becomes the outer peripheral side connection flow path 18 that connects the outer peripheral side openings 15b and 15c.

  It is the outer peripheral side opening 15a that is positioned at the upstream end (starting end) in the flow path of the trunk side fluid 13 described above. Therefore, a state in which a flange-like header member 26 extending in the circumferential direction along the outer surface of the trunk 6 is arranged at the peripheral edge portion of the outer circumferential side opening 15a on the outer surface of the trunk 6 so as to cover the outer circumferential side opening 15a. It is attached with. The header member 26 is provided with an inlet 27 for the trunk side fluid 13.

  Further, as shown in FIGS. 1A and 1B, it is desirable that each of the outer peripheral side openings 15a, 15b, and 15c includes a dispersion plate 28. The dispersion plate 28 causes a certain amount of pressure loss when the trunk-side fluid 13 passes, thereby dispersing the trunk-side fluid 13 in the circumferential direction through the outer circumferential openings 15a, 15b, and 15c. It is for promoting. As long as the dispersion plate 28 has the function of promoting dispersion of the body-side fluid 13, the dispersion plate 28 may have any configuration such as a perforated plate, a punching metal, a plate provided with a slit, or a configuration using a mesh. Further, the dispersion plate 28 may have a configuration in which holes and slits are provided in the peripheral wall of the body 6. In addition, in FIG.1 (b), although the dispersion | distribution board 28 was shown as what has a uniform structure in the circumferential direction, the distribution | circulation direction of the trunk | drum fluid 13 in the header member 26 outside the outer peripheral side opening part 15a, In consideration of the flow direction of the trunk side fluid 13 in the outer circumference side connection flow path 18 connecting the outer circumference side openings 15b and 15c, the dispersion plate 28 is uniformly distributed with pressure loss generated when the trunk side fluid 13 passes. Of course, it may not be. Further, each dispersion plate 28 may have the same configuration or may not have the same configuration.

  Further, each of the inner peripheral side openings 16a, 16b, 16c also has a circular shape along the inner peripheral side end position of the tube group installation region 7 for the purpose of averaging the flow of the trunk side fluid 13 in the circumferential direction. It is desirable to provide a dispersion plate 29 arranged in an arc. In consideration of the difference in the cross-sectional area of the flow path, the inner peripheral dispersion plate 29 should have a smaller pressure loss generated when the trunk side fluid 13 passes than the outer peripheral dispersion plate 28. You can do it.

  When the multi-tube heat exchanger according to the first embodiment having the above configuration is used, a pipe-side fluid supply unit (not shown) is connected to the pipe-side fluid inlet 10 and a pipe (not shown) is connected to the pipe-side fluid outlet 11. The demand destination or collection | recovery part of the side fluid 12 is connected.

  On the other hand, a trunk side fluid supply section (not shown) is connected to the inlet 27 of the header member 26, and a recovery section or a demand destination for the trunk side fluid 13 is connected to the outlet 30 a of the connection pipe 30. When the trunk side fluid 13 is a heat medium, the trunk side fluid 13 recovered from the outlet 30a may be returned to the trunk side fluid supply unit and circulated while adjusting the temperature.

  In this state, the tube-side fluid 12 supplied from the tube-side fluid supply unit is continuously supplied to each heat transfer tube 9 via the tube-side fluid inlet 10 and the distribution header 3 as described above.

  On the other hand, when the cylinder-side fluid 13 supplied from the cylinder-side fluid supply unit is supplied into the header member 26 from the inlet 27, the cylinder-side fluid 13 is dispersed in the header member 26 in the circumferential direction and then partitioned from the outer opening 15a. Flows into 7a. After that, according to the flow path of the trunk side fluid 13 described above, the trunk side fluid 13 that has passed through the section 7a is supplied to the section 7b via the inner peripheral connection flow path 17, and the trunk side fluid 13 that has passed through the section 7b is Then, it is supplied to the section 7 c through the outer peripheral side connection flow path 18.

  Thereby, in each division 7a, 7b, 7c, the pipe | tube side fluid 12 which distribute | circulates the inside of each heat exchanger tube 9 arrange | positioned at each division 7a, 7b, 7c, and the trunk | drum side which distribute | circulates the outer side of each heat exchanger tube 9 Heat exchange is performed with the fluid 13 via the tube wall of the heat transfer tube 9.

  The tube-side fluid 12 after the heat exchange process is passed through the heat transfer tubes 9, is collected by the assembly header 5, and then is taken out from the tube-side fluid outlet 11.

  On the other hand, the trunk side fluid 13 after the heat exchange process is guided to the header 24 provided on the inner peripheral side through the inner peripheral side opening 16c, and then the opening 20 of the tube plate 4 is provided. Then, it is guided to the outlet 30a through the tubular member 21 and the connecting pipe 30 and taken out.

  Thereafter, the pipe-side fluid 12 and the trunk-side fluid 13 taken out from the multi-tube heat exchanger according to the present embodiment are sent to the respective demand destinations and recovery units to perform preset post-processing. You can do it.

  By the way, since each section 7a, 7b, and 7c of the tube group installation area 7 is arranged in the upstream and downstream direction on the flow path of the trunk side fluid 13, the trunk side after being subjected to the heat exchange process in the section 7a. The fluid 13 is supplied to the section 7b, and further, the trunk side fluid 13 after being subjected to the heat exchange process in the section 7b is supplied to the section 7c. For this reason, in the compartments 7a, 7b and 7c, a difference occurs in the temperature of the trunk-side fluid 13 to be supplied, which may cause a difference in the heat transfer coefficient outside the heat transfer tube 9.

  However, in general, the heat exchange performance of the heat exchanger is determined based on the temperature difference between the supply and extraction of the tube-side fluid 12 and the temperature difference between the supply and extraction of the trunk-side fluid 13. For this reason, even if there is a difference in the heat transfer coefficient outside the tubes in the individual heat transfer tubes 9, no problem occurs in the heat exchange performance as a multi-tube heat exchanger.

  Thus, according to the multi-tube heat exchanger of the present embodiment, heat exchange between the tube-side fluid 12 and the trunk-side fluid 13 can be performed.

  Further, in the barrel 6 of the container 1, the tube group installation region 7 is divided into three sections 7a, 7b, and 7c by baffles 14a, 14b, and 14c, so that the flow path cross-sectional area of the barrel side fluid 13 is limited. Therefore, the flow velocity of the trunk side fluid 13 that flows outside the heat transfer tubes 9 is increased. Therefore, the multitubular heat exchanger of the present embodiment can have high heat exchange performance.

  Furthermore, in the multi-tube heat exchanger of the present embodiment, the flow of the trunk side fluid 13 in each of the compartments 7a, 7b, 7c includes a flow component in the container axial direction. , 7b, 7c, the cylinder side fluid 13 can be made to flow mainly along the container axis direction in the vicinity of the middle part in the container axis direction.

  For this reason, in the multi-tube heat exchanger of the present embodiment, unlike the conventional multi-tube heat exchanger, the cross flow of the tube group is not repeated, so that the pressure loss of the trunk side fluid 13 is reduced. Can be achieved.

  Thereby, the multi-tubular heat exchanger of the present embodiment may be configured to be advantageous when reducing pump power required for supplying the trunk side fluid 13 from the trunk side fluid supply unit. it can.

  In the case of a conventional multi-tube heat exchanger, as described in Patent Document 1, a large number of heat transfer tube insertion holes are provided in the baffle so that the heat transfer tubes are inserted (penetrated) into the heat transfer tube insertion holes. It is set as the structure made into.

  On the other hand, in the multi-tube heat exchanger of the present embodiment, each baffle 14a, 14b, 14c is arranged in parallel to the tube axis direction of each heat transfer tube 9, so it is necessary to provide a heat transfer tube insertion hole. Absent. Therefore, the drilling operation itself for the baffles 14a, 14b, 14c is unnecessary.

  Furthermore, when the trunk side fluid 13 is circulated through the sections 7a, 7b, 7c of the tube group installation region 7, no heat transfer pipe insertion holes are formed in the baffles 14a, 14b, 14c. There is no problem of leakage from the heat transfer tube insertion hole. For this reason, in the multi-tube heat exchanger of the present embodiment, the flow of the trunk side fluid 13 in each section 7a, 7b, 7c of the tube group installation region 7 becomes simple. Therefore, the multi-tube heat exchanger according to the present embodiment can easily control the temperature of the trunk side fluid 13.

[Application Example of First Embodiment]
FIG. 3 shows an application example of the first embodiment, and FIGS. 3A, 3B and 3C correspond to FIGS. 1A, 1B and 1C.

  In FIGS. 3A, 3B, and 3C, the same components as those in FIGS. 1A, 1B, and 1C are denoted by the same reference numerals, and description thereof is omitted.

  The multitubular heat exchanger shown in FIGS. 3A, 3B and 3C is obtained by reversing the flow direction of the trunk side fluid 13 from that of the multitubular heat exchanger of the first embodiment.

  In this application example, the outer end of the connecting pipe 30 may be used as the inlet 30b of the trunk side fluid 13, and the outlet 27a of the trunk side fluid 13 may be provided in the header member 26. When used in this way, the flow of the trunk side fluid 13 in each of the compartments 7a, 7b, 7c is in the opposite direction to that shown in FIG. Therefore, even if the trunk-side fluid 13 includes a flow component of the tube group cross-flow in the region near both ends in the container axial direction, the cylinder-side fluid 13 is in the middle portion in the container axial direction in each partition 7a, 7b, 7c. In the region, the flow is mainly along the container axial direction.

  Therefore, the same effect as the first embodiment can be obtained.

[Second Embodiment]
FIG. 4 shows a second embodiment of the multi-tube heat exchanger, FIG. 4 (a) is a schematic cross-sectional view at the container axial position, and FIG. 4 (b) is a diagram of C in FIG. 4 (a). -C direction arrow sectional drawing, FIG.4 (c) is DD direction arrow sectional drawing of Fig.4 (a).

  4A, 4B, and 4C, the same components as those in FIGS. 1A, 1B, and 1C are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIGS. 4A, 4B, and 4C, the multi-tube heat exchanger of the present embodiment has a configuration similar to that of the first embodiment, and is spaced 120 degrees in the circumferential direction in the tube group installation region 7. The baffles 141a, 141b similar to the baffles 14a, 14b, 14c are provided at two locations 180 degrees apart in the circumferential direction of the tube group installation area 7 instead of the configuration in which the baffles 14a, 14b, 14c are provided at the three locations. The configuration is provided.

  Thereby, in this embodiment, the two divisions 71a and 71b divided by each baffle 141a and 141b are formed in the tube group installation area 7 in the circumferential direction.

  In addition, each baffle 141a, 141b has the clearance gap between each heat exchanger tube 9 of the tube group 8 made into the triangular arrangement in the radial direction of the container 1 similarly to arrangement | positioning of each baffle 14a, 14b, 14c in 1st Embodiment. It is desirable to arrange in two of the six locations that extend continuously. According to such arrangement of the baffles 141a and 141b, it is possible to suppress the phenomenon that the trunk side fluid 13 passes through in the direction along the radial direction of the container 1 in the tube group installation region 7.

  Next, the flow path of the trunk side fluid 13 passing through the sections 71a and 71b formed in the tube group installation region 7 as described above will be described.

  FIG. 5 is a diagram for explaining the outline of the flow path of the trunk side fluid 13 in the present embodiment. The two sections 71a and 71b formed in the tube group installation region 7 are separated in the circumferential direction and expanded. It is shown. In addition, in FIG. 5, each division 71a, 71b is shown with the perspective view as a state by which the inner peripheral part is arrange | positioned at this side. In FIG. 5, the same components as those shown in FIGS. 4A, 4B, and 4C are denoted by the same reference numerals. Further, in FIG. 5, for convenience of illustrating the sections 71 a and 71 b, the baffles 141 a and 141 b, portions other than the body 6 of the container 1, the tube plate 2, and the heat transfer tube 9 are omitted.

  As shown in FIG. 5 with hatching, each of the sections 71a and 71b has an end portion near one end in the container axial direction in the outer peripheral portion (an end portion near the upper end in FIG. 5) and a container axial center in the inner peripheral portion. Outer ends 151a and 151b and inner peripheral openings 161a and 161b are provided at ends near the other end in the direction (ends near the lower end in FIG. 5), respectively.

  The compartments 71a and 71b are connected to each other through the inner peripheral connection channel 17 between the inner peripheral openings 161a and 161b.

  As described above, in the tube group installation region 7, the inner space of the partition 71 a, the inner peripheral opening 161 a, the inner peripheral connection channel 17, the inner peripheral opening 161 b, and the inner part of the partition 71 b are arranged from the outer peripheral opening 151 a. A flow path of the trunk side fluid 13 is formed which is connected in series through the space to the outer peripheral side opening 151b.

  Thereby, in the partition 71a, the trunk side fluid 13 flowing in from the outer peripheral side opening 151a provided at the end near one end in the container axial direction is the inner circumference provided at the end near the other end in the container axial direction. It flows toward the side opening 161a.

  Further, in the partition 71b, the trunk side fluid 13 flowing in from the inner peripheral side opening 161b provided at the end near the other end in the container axial direction is the outer peripheral side provided at the end near the one end in the container axial direction. It flows toward the opening 151b.

  Therefore, also in this embodiment, as shown in FIG. 5 in which the outline of the flow direction of the trunk side fluid 13 in each section 71a, 71b is shown, the flow of the trunk side fluid 13 in each section 71a, 71b In the region near both ends in the axial direction of the container in which the portions 151a and 151b and the inner peripheral side openings 161a and 161b are provided, the flow components of the tube group cross flow are included, but the containers in the respective sections 71a and 71b In the middle region in the axial direction, the flow is mainly along the axial direction of the container.

  In the present embodiment, the flow path of the trunk side fluid 13 is one in which two even-numbered sections 71a and 71b are connected. For this reason, as described above, the downstream end (terminal) of the flow path of the trunk side fluid 13 having the outer peripheral opening 151a as the upstream end (starting end) becomes the outer peripheral opening 151b.

  Therefore, as shown in FIGS. 4A and 4B, a flange-like header member 31 extending in the circumferential direction along the outer surface of the trunk 6 is provided at the peripheral edge of the outer peripheral opening 151 b on the outer surface of the trunk 6. It is attached in a state of being arranged so as to cover the outer peripheral side opening 151b. The header member 31 is provided with an outlet 32 for the trunk side fluid 13.

  Furthermore, in the present embodiment, only the inner peripheral side connection flow path 17 for connecting the inner peripheral side openings 161a and 161b is arranged inside the tube group installation region 7.

  Therefore, as shown in FIGS. 4A and 4C, in this embodiment, the tube plate 4 has no opening in the center, and the end surface of the closing member 19 near the other end in the container axial direction and the tube The entire gap with the plate 4 serves as the inner peripheral connection flow path 17.

  When the multi-tube heat exchanger of the present embodiment having the above-described configuration is used, the tube-side fluid inlet 10 and the tube-side fluid outlet 11 are provided with a tube-side fluid supply unit (not shown) as in the first embodiment. And the demand side or the recovery unit of the pipe-side fluid 12 are connected to each other. In the present embodiment, the flow of the pipe-side fluid 12 is the same as that in the first embodiment, and thus the description thereof is omitted.

  On the other hand, a trunk side fluid supply section (not shown) is connected to the inlet 27 of the header member 26, and a recovery section or a demand destination of the trunk side fluid 13 is connected to the outlet 32 of the header member 31. When the trunk side fluid 13 is a heat medium, the trunk side fluid 13 recovered from the outlet 32 may be returned to the trunk side fluid supply unit and circulated while adjusting the temperature.

  When the cylinder side fluid 13 supplied from the cylinder side fluid supply unit is supplied into the header member 26 from the inlet 27, the cylinder side fluid 13 is dispersed in the circumferential direction in the header member 26, and then is divided into the section 71a from the outer peripheral side opening 151a. Inflow. Thereafter, the trunk side fluid 13 that has passed through the section 71 a is supplied to the section 71 b through the inner peripheral side connection flow path 17 in accordance with the flow path of the trunk side fluid 13 described above.

  Thereby, in each division 71a, 71b, tube side fluid 12 which distribute | circulates inside each heat exchanger tube 9 arrange | positioned at each division 71a, 71b, and trunk | drum side fluid 13 which distribute | circulates the outer side of each heat transfer tube 9 In the meantime, heat exchange through the tube wall of the heat transfer tube 9 is performed.

  After the heat exchange process with the pipe-side fluid 12 is performed, the trunk-side fluid 13 is guided to the header member 31 provided on the outer peripheral side through the outer peripheral side opening 151b, and then from the outlet 32. It is taken out. The trunk side fluid 13 may be processed in the same manner as in the first embodiment.

  Therefore, also in the multi-tube heat exchanger of the present embodiment, heat exchange between the tube-side fluid 12 and the trunk-side fluid 13 can be performed.

  Further, in the multi-tube heat exchanger of the present embodiment, the flow of the trunk side fluid 13 in each of the compartments 71a and 71b includes a flow component in the container axial direction. In particular, in the region in the vicinity of the middle portion in the container axis direction of each of the sections 71a and 71b, the trunk side fluid 13 flows mainly along the container axis direction.

  For this reason, the same effect as the multitubular heat exchanger of the first embodiment can be obtained also by the multitubular heat exchanger of the present embodiment.

[Third Embodiment]
FIG. 6 shows a third embodiment of the multi-tube heat exchanger, FIG. 6 (a) is a schematic cross-sectional view at the container axis position, and FIG. 6 (b) is an E of FIG. 6 (a). -E direction arrow sectional drawing, FIG.6 (c) is FF direction arrow sectional drawing of Fig.6 (a).

  In FIGS. 6A, 6B, and 6C, the same components as those in FIGS. 4A, 4B, and 4C are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIGS. 6A, 6B, and 6C, the multi-tube heat exchanger of the present embodiment is partitioned by a baffle 141a, 141b in a tube group installation area 7, as in the second embodiment. In the configuration provided with the two sections 71a and 71b, the flow path of the trunk side fluid 13 is changed.

  FIG. 7 is a diagram for explaining the outline of the flow path of the trunk side fluid 13 in the present embodiment. Like FIG. 5, the two sections 71a and 71b formed in the tube group installation region 7 are arranged in the circumferential direction. It is separated and expanded.

  In the present embodiment, the flow path of the trunk side fluid 13 is such that the sections 71a and 71b are connected to each other through the outer peripheral side connection flow path 18 between the outer peripheral side openings 151a and 151b. A specific configuration of the outer peripheral side connection flow path 18 will be described later.

  For this reason, the tube group installation region 7 starts from the inner circumferential side opening 161a and starts from the inner circumferential side opening 161a to the internal space of the partition 71a, the outer circumferential side opening 151a, the outer circumferential side connection flow path 18, and the outer circumference. A flow path for the trunk-side fluid 13 is formed, which sequentially passes through the side opening 151b and the internal space of the section 71b and continues to the inner peripheral opening 161b.

  Thereby, in the section 71a, the cylinder side fluid 13 flowing in from the inner peripheral side opening 161a provided at the end near the other end in the container axial direction is the outer periphery provided at the end near the one end in the container axial direction. It flows toward the side opening 151a.

  Further, in the section 71b, the trunk side fluid 13 flowing from the outer peripheral side opening 151b provided at the end near one end in the container axial direction is the inner peripheral side provided at the end near the other end in the container axial direction. It flows toward the opening 161b.

  Therefore, also in this embodiment, as shown in FIG. 7 in which the outline of the flow direction of the trunk side fluid 13 in each section 71a, 71b is shown, the flow of the trunk side fluid 13 in each section 71a, 71b In the region near both ends in the axial direction of the container in which the portions 151a and 151b and the inner peripheral side openings 161a and 161b are provided, the flow components of the tube group cross flow are included, but the containers in the respective sections 71a and 71b In the middle region in the axial direction, the flow is mainly along the axial direction of the container.

  As shown in FIGS. 6A and 6B, the specific configuration of the outer peripheral side connection flow path 18 is such that a bowl-shaped flow path forming member 25 extending in the circumferential direction along the outer surface of the cylinder 6 The outer peripheral side openings 151a and 151b on the outer surface are attached so as to cover the peripheral portions together. Thereby, the internal space of the flow path forming member 25 becomes the outer peripheral side connection flow path 18 that connects the outer peripheral side openings 151a and 151b.

  In the present embodiment, the flow path of the trunk side fluid 13 is formed by connecting two even-numbered sections 71a and 71b, and as described above, the inner peripheral side opening 161a is connected to the upstream end (starting side). The downstream end (terminal) of the flow path of the trunk side fluid 13 as the end is an inner peripheral opening 161b.

  Therefore, as shown in FIGS. 6A and 6C, the tube sheet 4 is provided with an opening 20 in a central portion that is inside the tube group installation region 7. A tubular member 21 that protrudes inside the collective header 5 along the axial direction of the container 1 is attached to the opening 20.

  A baffle 141a passes through the axial center position of the container 1 in the space between the end surface near the other end in the container axial direction of the closing member 19 and the opening 20 of the tube plate 4 inside the tube group installation region 7. And 141b are provided with an inner peripheral partition member 22 that connects the inner peripheral end portions of the inner peripheral portion. An end of the inner peripheral partition member 22 near one end in the container axial direction is attached to an end surface of the closing member 19 near the other end in the container axial direction.

  Thereby, the space inside the tube group installation region 7 and closer to the other end in the container axial direction than the closing member 19 is communicated only with the inner peripheral side opening 161a by the inner peripheral partition member 22. , And a region communicating only with the inner peripheral side opening 161b. Of these, the region communicating with the inner circumferential side opening 161a is the inlet side for supplying the trunk side fluid 13 to the inner circumferential side opening 161a located at the upstream end in the flow path of the trunk side fluid 13 described above. Header 33. On the other hand, the region communicating with the inner peripheral side opening 161b collects the cylinder-side fluid 13 flowing out from the inner peripheral-side opening 161b located on the most downstream side in the flow path of the cylinder-side fluid 13, and the tubular member It becomes the header 24 on the exit side for sending to 21.

  Furthermore, the inner side of the tubular member 21 is divided into two spaces over the entire length by a partition 34 that continuously extends from the inner peripheral partition member 22 to the other end side in the container axial direction. Furthermore, one end portion of the connection pipe 35 is connected to the tubular member 21 at a location corresponding to a space communicating with the inner circumferential side opening 161a of the two spaces. The other end side of the connecting pipe 35 protrudes outside through the container wall corresponding to the collective header 5. In the present embodiment, the end of the connection pipe 35 that protrudes to the outside of the container 1 serves as the inlet 35 a of the trunk side fluid 13.

  Further, in the tubular member 21, one end portion of the connection pipe 30 is provided at a position corresponding to the space communicating with the inner circumferential side opening 161 b of the two spaces, similarly to the connection pipe 30 in the first embodiment. It is connected. The other end portion side of the connecting pipe 30 penetrates the container wall corresponding to the collective header 5 and protrudes to the outside. The end of the connection pipe 30 that protrudes outside the container 1 serves as the outlet 30 a of the trunk side fluid 13.

  When the multi-tube heat exchanger of the present embodiment having the above-described configuration is used, the tube-side fluid inlet 10 and the tube-side fluid outlet 11 are provided with a tube-side fluid supply unit (not shown) as in the first embodiment. And the demand side or the recovery unit of the pipe-side fluid 12 are connected to each other. In the present embodiment, the flow of the pipe-side fluid 12 is the same as that in the first embodiment, and thus the description thereof is omitted.

  On the other hand, a trunk side fluid supply unit (not shown) is connected to the upstream side of the inlet 35 a of the connection pipe 35, and a recovery part or a demand destination of the trunk side fluid 13 is connected to the outlet 30 a of the connection pipe 30. When the trunk side fluid 13 is a heat medium, the trunk side fluid 13 recovered from the outlet 30a may be returned to the trunk side fluid supply unit and circulated while adjusting the temperature.

  The trunk side fluid 13 supplied from the trunk side fluid supply unit is supplied to the header 33 through the connection pipe 35, the tubular member 21, and the opening 20 of the tube plate 4 from the inlet 35a. The trunk side fluid 13 supplied to the header 33 flows into the section 71a from the inner peripheral side opening 161a. Thereafter, the cylinder side fluid 13 that has passed through the section 71 a is supplied to the section 71 b via the outer peripheral side connection flow path 18 in accordance with the flow path of the cylinder side fluid 13 described above.

  Thereby, in each division 71a, 71b, tube side fluid 12 which distribute | circulates inside each heat exchanger tube 9 arrange | positioned at each division 71a, 71b, and trunk | drum side fluid 13 which distribute | circulates the outer side of each heat transfer tube 9 In the meantime, heat exchange through the tube wall of the heat transfer tube 9 is performed.

  The body side fluid 13 after the heat exchange process with the tube side fluid 12 is guided to the header 24 provided on the inner peripheral side through the inner peripheral side opening 161b, and then the tube plate. From the four openings 20, the tubular member 21 and the connecting pipe 30 are led to the outlet 30 a and are taken out. The trunk side fluid 13 may be processed in the same manner as in the second embodiment.

  Therefore, also in the multi-tube heat exchanger of the present embodiment, heat exchange between the tube-side fluid 12 and the trunk-side fluid 13 can be performed.

  In the multi-tube heat exchanger according to this embodiment, the flow of the trunk side fluid 13 in each of the compartments 71a and 71b includes a flow component in the container axial direction as in the second embodiment. It becomes. In particular, in the region in the vicinity of the middle portion in the container axis direction of each of the sections 71a and 71b, the trunk side fluid 13 flows mainly along the container axis direction.

  For this reason, the multitubular heat exchanger of the present embodiment can achieve the same effects as the multitubular heat exchanger of the second embodiment.

  In the first embodiment, an example in which sections 7a, 7b, and 7c divided in the circumferential direction are formed in the tube group installation region 7 is shown. In the second and third embodiments, a pipe The example which formed the division 71a, 71b divided into 2 by the circumferential direction in the group installation area | region 7 was shown. As for these numbers of partitions, 3 and 2, there are no positive divisors other than 1 except for 1. Therefore, the flow path of the trunk side fluid 13 set so as to pass through a plurality of sections is only one system that passes through all the sections.

  On the other hand, for example, when the number of sections is a number having a divisor other than 1 and the number, such as 6, 4, and 8, a plurality of distribution paths of the trunk side fluid 13 can be set.

  For example, in the case of six sections, three distribution paths connecting two sections each, two distribution paths connecting two sections, and one distribution path connecting six sections can be set.

  In the case of four sections, two distribution paths connecting two sections each and one distribution path connecting four sections can be set.

Furthermore, in the case of eight sections, four distribution paths connecting two sections each, four distribution paths connecting four sections, and one distribution path connecting eight sections can be set.
These examples are shown below.

[Fourth Embodiment]
FIG. 8 shows a fourth embodiment of the multi-tube heat exchanger, and FIGS. 8A and 8B are cross-sectional views at positions corresponding to FIGS. 1B and 1C, respectively.

  In FIGS. 8A and 8B, the same components as those in FIGS. 1A, 1B, and 1C are denoted by the same reference numerals, and the description thereof is omitted. In the present embodiment, the flow path of the pipe-side fluid 12 is the same as that in the first embodiment, and a description thereof will be omitted.

  As shown in FIGS. 8 (a) and 8 (b), the multi-tube heat exchanger of the present embodiment has three configurations at intervals of 120 degrees in the circumferential direction in the tube group installation region 7 in the same configuration as in the first embodiment. The baffles 142a, 142b, 142c, and 142d are the same as the baffles 14a, 14b, and 14c at six intervals of the circumferential direction of the tube group installation region 7 instead of the configuration in which the baffles 14a, 14b, and 14c are provided. , 142e, 142f are provided.

  Thereby, in this embodiment, six division 72a, 72b, 72c, 72d, 72e, 72f partitioned by each baffle 142a, 142b, 142c, 142d, 142e, 142f in the pipe group installation area 7 in the circumferential direction. It is arranged and formed.

  In addition, each baffle 142a, 142b, 142c, 142d, 142e, 142f is similar to the arrangement of each baffle 14a, 14b, 14c in the first embodiment, between the heat transfer tubes 9 of the tube group 8 in a triangular array. It is desirable to arrange the gaps at six locations extending continuously in the radial direction of the container 1. According to the arrangement of each of the baffles 142a, 142b, 142c, 142d, 142e, 142f, the phenomenon that the trunk-side fluid 13 passes through in the direction along the radial direction of the container 1 in the tube group installation region 7 is suppressed. can do.

  Each partition 72a, 72b, 72c, 72d, 72e, 72f is provided with an outer peripheral side opening 152a, 152b, 152c, 152d, 152e, 152f at the end of the outer peripheral portion near one end in the container axial direction. . In addition, inner peripheral side openings 162a, 162b, 162c, 162d, 162e, 162f are provided at the ends of the inner peripheral portions of the respective sections 72a, 72b, 72c, 72d, 72e, 72f near the other end in the container axial direction. Is provided.

  Next, the flow path of the trunk side fluid 13 passing through the sections 72a, 72b, 72c, 72d, 72e, 72f formed in the tube group installation area 7 as described above will be described.

  In the present embodiment, the distribution path of the trunk side fluid 13 is set as two distribution paths connecting the sections 72a, 72b, and 72c and the three sections 72f, 72e, and 72d.

  Therefore, the inner peripheral side openings 162 a and 162 b are connected by the inner peripheral side connection flow path 17. Further, the outer peripheral side openings 152b and 152c are connected by the outer peripheral side connection flow path 18. Thereby, the flow path of the trunk side fluid 13 connecting the sections 72a, 72b, and 72c is changed from the outer peripheral side opening 152a to the inner space of the section 72a, its inner peripheral opening 162a, the inner peripheral connection flow path 17, The inner space of the inner peripheral side opening 162b and the section 72b and the outer peripheral side opening 152b, the outer peripheral side connection channel 18, the outer peripheral side opening 152c and the inner space of the section 72c are sequentially passed to the inner peripheral side opening 162c. It is considered as a distribution channel that leads to

  On the other hand, the inner peripheral side openings 162f and 162e are connected by another inner peripheral side connection flow path 17. Further, the outer peripheral side openings 152e and 152d are connected by another outer peripheral side connection flow path 18. Thereby, the flow path of the trunk side fluid 13 connecting the sections 72f, 72e, and 72d is changed from the outer peripheral side opening 152f to the inner space of the section 72f, its inner peripheral side opening 162f, the inner peripheral side connection flow path 17, The inner space of the inner peripheral side opening 162e and the partition 72e and its outer peripheral side opening 152e, the outer peripheral side connection flow path 18, the outer peripheral side opening 152d and the inner space of the partition 72d are sequentially passed to the inner peripheral side opening 162d. It is considered as a distribution channel that leads to

  As shown in FIG. 8 (b), each inner peripheral side connection flow path 17 is located on the inner side of the tube group installation region 7 and from the end surface near the other end in the container axial direction of the closing member 19. This is formed by partitioning the space between the opening 20 and the inner peripheral partition member 22 (see FIG. 1A). For this reason, the inner peripheral partition member 22 has a shape in which three flat plates extending along the radial direction of the container 1 are connected from the axial center position of the container 1 toward the inner peripheral side ends of the baffles 142a, 142c, 142e. is there. Furthermore, the container axial direction other end side of each inner peripheral side connection flow path 17 shall be closed by the closing member similar to the closing member 23 shown to Fig.1 (a).

  As shown in FIG. 8A, the outer peripheral side connection flow path 18 connecting the outer peripheral side openings 152b and 152c is formed on the outer surface of the trunk 6 on the flow path forming member 25 shown in FIGS. The flow path forming member 25 similar to the above is attached so as to cover the outer peripheral side openings 152b and 152c, thereby forming an internal space of the flow path forming member 25.

  Similarly, the outer peripheral side connection flow path 18 connecting the outer peripheral side openings 152e and 152d is attached to the outer surface of the trunk 6 with the same flow path forming member 25 as described above so as to cover the outer peripheral side openings 152e and 152d. Thus, it is formed as an internal space of the flow path forming member 25.

  In the two systems of the flow path of the trunk side fluid 13 described above, the outer peripheral side opening 152a and the outer peripheral side opening 152f are positioned at the upstream end (starting end). Therefore, on the outer side of the outer peripheral side openings 152a and 152f on the outer surface of the body 6, the header member 26 having the same inlet 27 as shown in FIGS. 1 (a) and 1 (b) is provided with the outer peripheral side openings 152a and 152f. Are attached to cover together.

  On the other hand, in the two systems of the flow path of the trunk side fluid 13 described above, the inner peripheral side opening 162c and the inner peripheral side opening 162d are positioned at the downstream end (terminal). Therefore, the inside of these inner peripheral side openings 162c and 162d is a common header 24 communicating with the opening 20 provided in the tube plate 4 similar to that shown in FIG. It is assumed that a tubular member 21 similar to that shown in FIG. 1 and a connecting tube 30 having an outlet 30a at the outer end of the container 1 are connected to the opening 20 of the tube plate 4.

  According to the multitubular heat exchanger of the present embodiment having the above-described configuration, the cylinder side fluid 13 supplied from a cylinder side fluid supply unit (not shown) connected to the inlet 27 enters the header member 26 from the inlet 27. When supplied, it is dispersed in the circumferential direction in the header member 26 and then flows into the sections 72a and 72f through the outer peripheral side openings 152a and 152f.

  The trunk side fluid 13 that has flowed into the section 72a is sent to the header 24 from the inner peripheral side opening 162c after passing through the distribution path of the system that passes through the sections 72a, 72b, and 72c in order.

  Similarly, the trunk side fluid 13 that has flowed into the section 72f is sent to the header 24 from the inner peripheral side opening 162d after passing through the distribution path of the system passing through the sections 72f, 72e, and 72d in order.

  The trunk-side fluid 13 reaching the header 24 is guided to the outlet 30a through the opening of the tube plate 4, the tubular member 21, and the connecting pipe 30 as in the case of the first embodiment shown in FIG. It is taken out.

  Therefore, even with the multi-tube heat exchanger of this embodiment, the flow of the trunk side fluid 13 is within each of the sections 72a, 72b, 72c and 72f, 72e, 72d forming the circulation path of the trunk side fluid 13. The flow component in the container axial direction is included. In particular, in the region near the middle portion in the container axial direction, the trunk side fluid 13 flows mainly along the container axial direction.

  For this reason, the same effect as the multitubular heat exchanger of the first embodiment can be obtained also by the multitubular heat exchanger of the present embodiment.

  In the present embodiment, the common header member 26 is provided outside the outer peripheral side openings 152a and 152f, and the common header 24 is provided inside the inner peripheral openings 162c and 162d. Of course, it is also possible to have a configuration in which the individual inlet-side header member 26 and the outlet-side header 24 are provided in the two distribution channels of the trunk-side fluid 13. In this case, the distribution path connecting the sections 72d, 72e, and 72f has the header member 26 attached to the outer peripheral opening 152d, and the outlet header that communicates the inside of the inner peripheral opening 162f with the opening 20 of the tube plate 4. It may be 24.

  In the configuration in which six sections 72a, 72b, 72c, 72d, 72e, 72f are formed in the circumferential direction in the tube group installation region 7 as in the present embodiment, the flow path of the trunk side fluid 13 is the sections 72a, 72b, 72c. In addition to the two distribution routes connecting the three sections 72d, 72e, and 72f, as described above, the one distribution path connecting the six sections as described above and the three distribution paths connecting the two sections each. Can be set.

[First Modification of Fourth Embodiment]
FIG. 9 shows a form in which a single distribution channel is provided in which six sections 72a, 72b, 72c, 72d, 72e, and 72f are connected in order as a first modification of the fourth embodiment.

  FIGS. 9A and 9B are diagrams corresponding to FIGS. 8A and 8B, respectively, and are cross-sectional views at positions corresponding to FIGS. 4B and 4C.

  9 (a) and 9 (b), the same components as those in FIGS. 8 (a) and 8 (b) are denoted by the same reference numerals, and the description thereof is omitted.

  In the first modified example of the fourth embodiment, the inner peripheral side openings 162a and 162b, the inner peripheral side openings 162c and 162d, and the inner peripheral side openings 162e and 162f are respectively separate inner peripheral side connection channels 17. Connected through.

  Further, the outer peripheral side openings 152b and 152c and the outer peripheral side openings 152d and 152e are respectively connected by the outer peripheral side connection flow paths 18 formed by the individual flow path forming members 25 attached to the corresponding portions of the outer surface of the body 6. Has been.

  In this modification, since the number of connected sections is an even number, the downstream end (terminal) of the flow path of the trunk side fluid 13 with the outer peripheral opening 152a as the upstream end (starting end) is the outer periphery. It becomes the side opening 152f.

  For this reason, the header member 26 provided with the inlet 27 is attached to the outer surface of the trunk 6 at a position that is outside the outer peripheral opening 152a. On the other hand, a header member 31 having an outlet 32 similar to that shown in FIGS. 4A and 4B is attached to a position on the outer surface of the body 6 that is outside the outer peripheral side opening 152f. Further, the tube sheet 4 has no opening in the center.

[Second Modification of Fourth Embodiment]
FIG. 10 shows, as a second modification of the fourth embodiment, two sections 72a and 72b, sections 72c and 72d, sections 72e and 72f, each of six sections 72a, 72b, 72c, 72d, 72e, and 72f. This shows a form in which three distribution channels are connected.

  FIGS. 10A and 10B are views corresponding to FIGS. 8A and 8B, respectively, and are cross-sectional views at positions corresponding to FIGS. 4B and 4C.

  10 (a) and 10 (b), the same components as those in FIGS. 8 (a) and 8 (b) are denoted by the same reference numerals, and the description thereof is omitted.

  In the second modified example of the fourth embodiment, the inner peripheral side openings 162a and 162b, the inner peripheral side openings 162c and 162d, and the inner peripheral side openings 162e and 162f are respectively separate inner peripheral side connection channels 17. Connected through.

  On the outer surface of the body 6, header members 26 having the same inlets 27 as shown in FIG. 4B are attached to positions outside the outer peripheral side openings 152 a, 152 c and 152 e, respectively.

Further, header members 31 having outlets 32 similar to those shown in FIG. 4B are attached to positions on the outer surface of the barrel 6 that are outside the outer peripheral side openings 152b, 152d, and 152f.

  Also in this modified example, since the number of connected sections is an even number, the tube sheet 4 is assumed to have no opening in the center.

  Even in the first and second modifications of the fourth embodiment described above, the number of sections included in one system of the flow path of the trunk side fluid 13 is different, but it is used in the same manner as in the fourth embodiment. Similar effects can be obtained.

[Fifth Embodiment]
FIG. 11 shows a fifth embodiment of the multitubular heat exchanger, and FIGS. 11 (a) and 11 (b) are cross-sectional views at positions corresponding to FIGS. 4 (b) and 4 (c), respectively.

  11A and 11B, the same components as those in FIGS. 4A, 4B, and 4C are denoted by the same reference numerals, and the description thereof is omitted. In the present embodiment, the flow path of the pipe-side fluid 12 is the same as that in the first embodiment, and a description thereof will be omitted.

  In the multi-tube heat exchanger of the present embodiment, the arrangement of the heat transfer tubes 9 in the tube group 8 is, for example, a square arrangement with a square unit as shown in FIGS. 11 (a) and 11 (b). An example of application is shown.

  When the heat transfer tubes 9 are in a square arrangement, the tube group 8 is formed with four locations where the gaps between the heat transfer tubes 9 continuously extend in the radial direction of the container 1 at intervals of 90 degrees in the circumferential direction. The

  Therefore, in this embodiment, as shown in FIGS. 11A and 11B, in the configuration similar to that of the second embodiment shown in FIGS. 4A, 4B, and 4C, the tube group installation region 7 is used. Baffles 143a, 143b, 143c, and 143d are provided at four locations at intervals of 90 degrees in the circumferential direction.

  Thereby, in this embodiment, four divisions 73a, 73b, 73c, and 73d partitioned by the respective baffles 143a, 143b, 143c, and 143d are formed in the tube group installation region 7 in the circumferential direction.

  The baffles 143 a, 143 b, 143 c, and 143 d are preferably arranged at four locations where the gaps between the heat transfer tubes 9 arranged in a square form extend continuously in the radial direction of the container 1. According to such an arrangement of the baffles 143a, 143b, 143c, and 143d, it is possible to suppress a phenomenon in which the trunk side fluid 13 passes through in the direction along the radial direction of the container 1 in the tube group installation region 7. .

  Each partition 73a, 73b, 73c, 73d is provided with an outer peripheral side opening 153a, 153b, 153c, 153d at the end of the outer peripheral portion near one end in the container axial direction. Inner peripheral side openings 163a, 163b, 163c, and 163d are provided at the ends of the inner peripheral portions of the compartments 73a, 73b, 73c, and 73d near the other end in the container axial direction.

  Next, the flow path of the trunk side fluid 13 that passes through the sections 73a, 73b, 73c, 73d formed in the tube group installation region 7 as described above will be described.

  In the present embodiment, the distribution path of the trunk side fluid 13 is set as two distribution paths connecting the sections 73a and 73b and the sections 73c and 73d.

  Therefore, the inner peripheral side openings 163 a and 163 b are connected by the inner peripheral side connection flow path 17. Thereby, the flow path of the trunk side fluid 13 connecting the sections 73a and 73b is from the outer peripheral side opening 153a to the internal space of the section 73a and its inner peripheral side opening 163a, the inner peripheral side connection flow path 17, and the inner periphery. A flow path is formed that sequentially passes through the internal space of the side opening 163b and the partition 73b and continues to the outer periphery side opening 153b.

  On the other hand, the inner circumferential side openings 163d and 163c are connected by another inner circumferential side connection flow path 17. Thereby, the flow path of the trunk side fluid 13 connecting the sections 73d and 73c is changed from the outer peripheral side opening 153d to the inner space of the section 73d and its inner peripheral side opening 163d, the inner peripheral side connection flow path 17, and the inner periphery. A flow path is formed that sequentially passes through the inner space of the side opening 163c and the partition 73c and continues to the outer periphery side opening 153c.

  As shown in FIG. 11 (b), each inner peripheral side connection flow path 17 is located on the inner side of the tube group installation region 7 and from the end surface near the other end in the container axial direction of the closing member 19. The space up to is formed by partitioning by an inner peripheral partition member 22 (see FIG. 1A). For this reason, the inner peripheral partition member 22 has a configuration in which the inner peripheral end portions of the baffles 143a and 143c are connected to each other through the axial center position of the container 1. The tube sheet 4 is assumed to have no opening.

  In the two systems of the flow path of the trunk side fluid 13 described above, the outer peripheral side opening 153a and the outer peripheral side opening 153d are positioned at the upstream end (starting end). Therefore, a header member 26 having an inlet 27 similar to that shown in FIGS. 4 (a) and 4 (b) is provided outside the outer peripheral openings 153a and 153d on the outer surface of the body 6, and the outer peripheral openings 153a and 153d. Are attached to cover together.

  On the other hand, in the two systems of the flow path of the trunk side fluid 13 described above, the outer peripheral side opening 153b and the outer peripheral side opening 153c are positioned at the downstream end (terminal). Therefore, on the outer side of the outer peripheral side openings 153b and 153c on the outer surface of the body 6, a header member 31 having an outlet 32 similar to that shown in FIGS. 4 (a) and 4 (b) is provided for each of the outer peripheral side openings 153b and 153c. Are attached to cover together.

  According to the multitubular heat exchanger of the present embodiment having the above-described configuration, the cylinder side fluid 13 supplied from a cylinder side fluid supply unit (not shown) connected to the inlet 27 enters the header member 26 from the inlet 27. When supplied, after being distributed in the circumferential direction in the header member 26, it flows into the sections 73a and 73d through the outer peripheral side openings 153a and 153d.

  The trunk side fluid 13 that has flowed into the section 73a is sent to the header member 31 from the outer peripheral side opening 153b after passing through the distribution channel of the system passing through the sections 73a and 73b in order.

  Similarly, the trunk side fluid 13 that has flowed into the section 73d is sent to the header member 31 from the outer peripheral side opening 153c after passing through the distribution channel of the system passing through the sections 73d and 73c in order.

  The trunk side fluid 13 reaching the header member 31 is taken out from the outlet 32 thereof.

  Therefore, also in the multi-tubular heat exchanger of the present embodiment, the flow of the trunk side fluid 13 is in the container axis in each of the sections 73a, 73b and 73d, 73c forming the circulation path of the trunk side fluid 13. It includes the flow component in the direction. In particular, in the region near the middle portion in the container axial direction, the trunk side fluid 13 flows mainly along the container axial direction.

  For this reason, the same effect as the multitubular heat exchanger of the first embodiment can be obtained also by the multitubular heat exchanger of the present embodiment.

  In the present embodiment, the common header member 26 is provided outside the outer peripheral side openings 153a and 153d, and the common header member 31 is provided outside the outer peripheral openings 153b and 153c. Of course, it is possible to provide a configuration in which the individual inlet-side header member 26 and the outlet-side header member 31 are provided in the two distribution channels of the trunk-side fluid 13.

  In the configuration in which four sections 73a, 73b, 73c, and 73d are formed in the circumferential direction in the tube group installation region 7 as in this embodiment, the flow path of the trunk side fluid 13 is between the sections 73a and 73b and the sections 73c and 73d. In addition to the two distribution paths connecting two sections, a single distribution path connecting four sections can be set as described above.

[Modification of Fifth Embodiment]
FIG. 12 shows a form in which one distribution channel is provided in which four sections 73a, 73b, 73c, and 73d are connected in order as a modification of the fifth embodiment.

  12 (a) and 12 (b) are diagrams corresponding to FIGS. 11 (a) and 11 (b), respectively, and are cross-sectional views at positions corresponding to FIGS. 4 (b) and 4 (c).

  In FIGS. 12 (a) and 12 (b), the same components as those in FIGS. 11 (a) and 11 (b) are denoted by the same reference numerals, and the description thereof is omitted.

  In the modified example of the fifth embodiment, the inner peripheral side openings 163a and 163b and the inner peripheral side openings 163c and 163d are connected via individual inner peripheral side connection channels 17 as in the fifth embodiment. Connected.

  Further, the outer peripheral side openings 153 b and 153 c are connected by an outer peripheral side connection flow path 18 formed by a flow path forming member 25 attached to a corresponding portion of the outer surface of the trunk 6.

  In this modification, since the number of connected sections is an even number, the downstream end (terminal) of the flow path of the trunk side fluid 13 with the outer peripheral opening 153a as the upstream end (starting end) is the outer periphery. A side opening 153d is formed.

  For this reason, the header member 26 provided with the inlet 27 is attached to the outer surface of the trunk | drum 6 in the position used as the outer side of the outer peripheral side opening part 153a. On the other hand, a header member 31 having an outlet 32 is attached to a position on the outer surface of the trunk 6 that is outside the outer peripheral opening 153d.

  Even according to the modification of the fifth embodiment described above, the number of sections included in one system of the flow path of the trunk side fluid 13 is different, but the same effect can be obtained by using the same as in the fifth embodiment. it can.

[Sixth Embodiment]
FIG. 13 shows a sixth embodiment of the multi-tube heat exchanger, and FIGS. 13 (a) and 13 (b) are diagrams corresponding to FIGS. 11 (a) and 11 (b), respectively. It is sectional drawing in the position corresponding to (c).

  In FIGS. 13 (a) and 13 (b), the same components as those in FIGS. 11 (a) and 11 (b) are denoted by the same reference numerals, and the description thereof is omitted. In the present embodiment, the flow path of the pipe-side fluid 12 is the same as that in the first embodiment, and thus the description thereof is omitted.

  In the multi-tube heat exchanger of the present embodiment, the arrangement of the heat transfer tubes 9 in the tube group 8 is, for example, a square arrangement with a square unit as shown in FIGS. 11 (a) and 11 (b). Another example to apply is shown.

  In this embodiment, as shown in FIGS. 13 (a) and 13 (b), baffles 143a are provided at four locations in the tube group installation area 7 in the same configuration as the fifth embodiment shown in FIGS. 11 (a) and 11 (b). , 143b, 143c, and 143d, instead of the configuration in which the baffles 144a, 144b, 144c, 144d, 144e, 144f, 144g, and 144h are provided at eight positions at intervals of 45 degrees in the circumferential direction in the tube group installation region. is there.

  Thereby, in this embodiment, eight division 74a, 74b, 74c, 74d, 74e, 74f partitioned by each baffle 144a, 144b, 144c, 144d, 144e, 144f, 144g, 144h in the tube group installation area 7 , 74g, 74h are arranged in the circumferential direction.

  From the viewpoint of suppressing local passage of the trunk side fluid 13 in the tube group installation region 7, half of the baffles 144a, 144b, 144c, 144d, 144e, 144f, 144g, and 144h are shown in FIG. In the same manner as described above, the gaps between the heat transfer tubes 9 arranged in the square are arranged at four locations at intervals of 90 degrees in the circumferential direction so as to continuously extend in the radial direction, and the remaining half is the tube group 8. It is desirable that a part of each heat transfer tube 9 arranged in the above is thinned out to be provided in a space formed in the tube group installation region 7 so as to extend in the radial direction.

  In each of the compartments 74a, 74b, 74c, 74d, 74e, 74f, 74g, 74h, the outer peripheral side openings 154a, 154b, 154c, 154d, 154e, 154f, 154g and 154h are provided. Further, the inner peripheral side openings 164a, 164b, 164c, 164d, and the inner peripheral side ends of the compartments 74a, 74b, 74c, 74d, 74e, 74f, 74g, 74h 164e, 164f, 164h, and 164g are provided.

  Next, the flow path of the trunk side fluid 13 passing through the sections 74a, 74b, 74c, 74d, 74e, 74f, 74g, and 74h formed in the tube group installation region 7 as described above will be described.

  In the present embodiment, the distribution path of the trunk side fluid 13 is set as two systems of distribution paths connecting the sections 74a, 74b, 74c, and 74d and the four sections 74h, 74g, 74f, and 74e.

  Therefore, the inner peripheral side openings 164a and 164b and the inner peripheral side openings 164c and 164d are connected by different inner peripheral side connection channels 17 respectively.

  Furthermore, the outer peripheral side openings 154 b and 154 c are connected by the outer peripheral side connection flow path 18.

  As a result, the flow path of the trunk side fluid 13 connecting the compartments 74a, 74b, 74c, and 74d is changed from the outer peripheral opening 154a to the internal space of the compartment 74a, its inner peripheral opening 164a, and the first inner peripheral side. Connection channel 17, inner space 164b and inner space of partition 74b and outer opening 154b, outer connection channel 18, outer space 154c and inner space of partition 74c and inner opening 164c, The second inner circumferential side connection flow path 17, the inner circumferential side opening 164d, and the internal space of the partition 74d are sequentially provided as a flow path that is continuously connected to the outer circumferential side opening 154d.

  On the other hand, the inner circumferential side openings 164h and 164g and the inner circumferential side openings 164f and 164e are further connected by separate inner circumferential side connection channels 17.

  Furthermore, the outer peripheral side openings 154 g and 154 f are connected by another outer peripheral side connection flow path 18.

  As a result, the flow path of the trunk side fluid 13 connecting the compartments 74h, 74g, 74f, and 74e is changed from the outer peripheral side opening 154h to the internal space of the compartment 74h and its inner peripheral side opening 164h. Circumferential connection channel 17, inner space 164g and inner space of partition 74g and outer peripheral opening 154g, another outer connection channel 18, outer space 154f and inner space of partition 74f and inner peripheral side An opening 164f, another second inner peripheral side connection flow path 17, an inner peripheral side opening 164e, and an internal space of the section 74e are sequentially provided as a flow path that is continuously connected to the outer peripheral side opening 154e.

  As shown in FIG. 13 (b), each inner peripheral side connection flow path 17 is located on the inner side of the tube group installation region 7 and from the end surface near the other end in the container axial direction of the closing member 19. The space up to is formed by partitioning by an inner peripheral partition member 22 (see FIG. 1A). The inner peripheral partition member 22 includes four flat plates extending along the radial direction of the container 1 from the axial center position of the container 1 toward the inner peripheral side ends of the baffles 144a, 144c, 144e, and 144g. The end portions are attached to the inner peripheral side ends of the baffles 144a, 144c, 144e, and 144g.

  In the two systems of the flow path of the trunk side fluid 13 described above, the outer peripheral side opening 154a and the outer peripheral side opening 154h are positioned at the upstream end (starting end). Therefore, on the outer side of the outer peripheral side openings 154a and 154h on the outer surface of the body 6, a header member 26 having an inlet 27 similar to that shown in FIGS. 4 (a) and 4 (b) is provided for each of the outer peripheral side openings 154a and 154h. Are attached to cover together.

  On the other hand, in the two systems of the flow path of the trunk side fluid 13 described above, the outer peripheral side opening 154d and the outer peripheral side opening 154e are positioned at the downstream end (terminal). Therefore, on the outer side of the outer peripheral side openings 154d and 154e on the outer surface of the body 6, a header member 31 having the same outlet 32 as shown in FIGS. 4 (a) and 4 (b) is provided. Are attached to cover together.

  According to the multitubular heat exchanger of the present embodiment having the above-described configuration, the cylinder side fluid 13 supplied from a cylinder side fluid supply unit (not shown) connected to the inlet 27 enters the header member 26 from the inlet 27. When supplied, it is dispersed in the circumferential direction in the header member 26 and then flows into the compartments 74a and 74h through the outer peripheral side openings 154a and 154h.

  The trunk side fluid 13 that has flowed into the section 74a is sent to the header member 31 from the outer peripheral side opening 154d after passing through the distribution path of the system passing through the sections 74a, 74b, 74c, and 74d in order.

  Similarly, the trunk-side fluid 13 that has flowed into the section 74h is sent to the header member 31 from the outer peripheral side opening 154e after passing through the distribution channel of the system passing through the sections 74h, 74g, 74f, and 74e in order.

  The trunk side fluid 13 reaching the header member 31 is taken out from the outlet 32 thereof.

  Therefore, even in the multi-tube heat exchanger of the present embodiment, in each of the compartments 74a, 74b, 74c, 74d and the compartments 74h, 74g, 74f, 74e forming the circulation path of the trunk side fluid 13, the trunk side The flow of the fluid 13 includes a flow component in the container axial direction. In particular, in the region near the middle portion in the container axial direction, the trunk side fluid 13 flows mainly along the container axial direction.

  For this reason, the same effect as the multitubular heat exchanger of the first embodiment can be obtained also by the multitubular heat exchanger of the present embodiment.

  In the present embodiment, the common header member 26 is provided outside the outer peripheral side openings 154a and 154h, and the common header member 31 is provided outside the outer peripheral openings 154d and 154e. Of course, it is possible to provide a configuration in which the individual inlet-side header member 26 and the outlet-side header member 31 are provided in the two distribution channels of the trunk-side fluid 13.

  In the configuration in which eight sections 74a, 74b, 74c, 74d, 74e, 74f, 74g, and 74h are formed in the circumferential direction in the tube group installation area 7 as in the present embodiment, the flow path of the trunk side fluid 13 is divided into four sections. In addition to the two distribution routes connected to each other, as described above, one distribution route connecting eight sections and four distribution routes connecting two sections can be set.

[First Modification of Sixth Embodiment]
FIG. 14 shows a form in which a single distribution channel is provided in which eight sections 74a, 74b, 74c, 74d, 74e, 74f, 74g, and 74h are connected in order as a first modification of the sixth embodiment. is there.

  14 (a) and 14 (b) are diagrams corresponding to FIGS. 13 (a) and 13 (b), respectively, and are cross-sectional views at positions corresponding to FIGS. 4 (b) and 4 (c).

  In FIGS. 14 (a) and 14 (b), the same components as those in FIGS. 13 (a) and 13 (b) are denoted by the same reference numerals, and the description thereof is omitted.

  In the first modification of the sixth embodiment, as shown in FIG. 14 (b), the inner peripheral side connection flow path 17 of the inner peripheral side openings 164a, 164b, 164c, 164d, 164e, 164f, 164g, 164h. The connection structure via is similar to that of the sixth embodiment shown in FIG.

  On the other hand, as shown in FIG. 14 (a), the outer peripheral side openings 154b and 154c, the outer peripheral side openings 154d and 154e, and the outer peripheral side openings 154f and 154g are individually attached to corresponding portions of the outer surface of the body 6. Are connected by outer peripheral side connection flow paths 18 formed by the flow path forming members 25.

  In this modified example, since the number of connected sections is an even number, the downstream end (terminal) of the flow path of the trunk side fluid 13 having the outer peripheral opening 154a as the upstream end (starting end) is the outer periphery. It becomes the side opening part 154h.

  For this reason, the header member 26 provided with the inlet 27 is attached to the outer surface of the trunk | drum 6 in the position used as the outer side of the outer peripheral side opening part 154a. On the other hand, a header member 31 having an outlet 32 similar to that shown in FIG. 13A is attached to a position outside the outer peripheral side opening 154h of the section 74h on the outer surface of the barrel 6.

[Second Modification of Sixth Embodiment]
FIG. 15 shows, as a second modification of the sixth embodiment, two sections 74a and 74b, sections 74c and 74d, each of eight sections 74a, 74b, 74c, 74d, 74e, 74f, 74g, and 74h. The figure shows a form in which four distribution channels are provided by connecting the sections 74e and 74f and the sections 74g and 74h.

  FIGS. 15A and 15B are views corresponding to FIGS. 13A and 13B, respectively, and are cross-sectional views at positions corresponding to FIGS. 4B and 4C.

  In FIGS. 15 (a) and 15 (b), the same components as those in FIGS. 13 (a) and 13 (b) are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 15B, the connection structure of the inner peripheral side openings 164a, 164b, 164c, 164d, 164e, 164f, 164g, and 164h through the inner peripheral connection channel 17 is shown in FIG. This is the same as the sixth embodiment shown in FIG.

  On the other hand, header members 26 each having an inlet 27 are attached to the outer surface of the body 6 at positions outside the outer peripheral side openings 154a, 154c, 154e, and 154g.

  Further, header members 31 each having an outlet 32 are attached to positions outside the outer peripheral side openings 154b, 154d, 154f, and 154h on the outer surface of the barrel 6.

  Even in the first and second modifications of the sixth embodiment described above, the number of sections included in one system of the flow path of the trunk side fluid 13 is different, but it is used in the same manner as in the sixth embodiment. Similar effects can be obtained.

  10A and 10B, a second modification of the fourth embodiment, a fifth embodiment shown in FIGS. 11A and 11B, and FIGS. 12A and 12B. Modification of the fifth embodiment, the sixth embodiment shown in FIGS. 13 (a) and 13 (b), the first modification of the sixth embodiment shown in FIGS. 14 (a) and 14 (b), and FIG. 15 (a). In the second modification of the sixth embodiment shown in (b), the number of sections connected by one system of the trunk side fluid 13 is an even number.

  Therefore, in each figure, although it showed about the structure by which the inlet 27 and the outlet 32 of the trunk side fluid 13 were each provided in the outer peripheral part of the trunk | drum 6 of the container 1, similarly to 3rd Embodiment, the trunk side fluid 13 is shown. Alternatively, it may be performed from the inside of the tube group installation area 7.

  In this case, although not shown in the drawing, the inside of the inner peripheral side opening of the section that becomes the upstream end (starting end) of the circulation path of the trunk side fluid 13 and the downstream end (terminal) of the circulation path As in the case of the third embodiment shown in FIGS. 6 (a) and 6 (c), an inlet-side header 33 and an outlet-side header 24 are respectively provided inside the inner circumferential side opening of the partition. The connecting pipe 35 having an inlet 35a outside the container and the outlet 30a outside the container via a tubular member 21 in which the headers 33 and 24 are attached to the opening 20 provided in the central portion of the tube plate 4 and the inside is appropriately partitioned. What is necessary is just to set it as the structure connected to the connection pipe | tube 30 which has.

[Seventh Embodiment]
FIG. 16 shows a seventh embodiment of the multi-tube heat exchanger, FIG. 16 (a) is a schematic cross-sectional view at the container axial center position, and FIG. 16 (b) is a diagram of G in FIG. 16 (a). -G direction arrow sectional drawing, FIG.16 (c) is a HH direction arrow sectional drawing of Fig.16 (a).

  In FIGS. 16A, 16B, and 16C, the same components as those in FIGS. 1A, 1B, and 1C are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, the flow path of the pipe-side fluid 12 is the same as that in the first embodiment, and a description thereof will be omitted.

  The multi-tube heat exchanger of the present embodiment is partitioned by the baffles 14a, 14b, and 14c in the tube group installation region 7 as in the first embodiment shown in FIGS. The three sections 7a, 7b, and 7c are arranged in the circumferential direction.

  The flow path of the trunk side fluid 13 passing through the sections 7a, 7b, 7c formed in the tube group installation region 7 is as follows.

  FIG. 17 is a diagram for explaining the outline of the flow path of the trunk side fluid 13, and similarly to FIG. 2, three compartments 7 a, 7 b, formed in the tube group installation region 7 in the trunk 6 of the container 1. 7c is shown separated and developed in the circumferential direction. In FIG. 17, the same components as those shown in FIG. 16 are denoted by the same reference numerals.

  Each of the compartments 7a, 7b, and 7c is provided with outer peripheral side openings 15a, 15b, and 15c in the middle portion of the outer peripheral portion in the axial direction of the container as shown by hatching in FIG. Inner peripheral side openings 16a, 16b, and 16c are provided at two locations on both ends in the axial direction.

  Of the three sections 7a, 7b and 7c arranged in the circumferential direction, the adjacent sections 7a and 7b have inner circumferential side openings 16a and 16b which are adjacent to each other in the circumferential direction inside the sections 7a and 7b. They are respectively connected via the provided inner peripheral side connection flow path 17. Further, the adjacent sections 7 b and 7 c are connected to each other through the outer peripheral side connection flow path 18 provided on the outer side of the body 6 of the container 1.

  As described above, in the tube group installation region 7, from the outer peripheral side opening 15a, the internal space of the partition 7a, each inner peripheral side opening 16a, each inner peripheral side connection flow path 17, each inner peripheral side opening 16b, the partition 7b, the outer peripheral side opening 15b, the outer peripheral side connection flow path 18, the outer peripheral side opening 15c, and the inner side of the section 7c in order, the trunk side connected to each inner peripheral side opening 16c in the upstream and downstream direction A flow path for the fluid 13 is formed.

  Thereby, in the compartments 7a and 7c, the cylinder side fluid 13 flowing in from the outer peripheral side openings 15a and 15c provided in the intermediate portion in the container axial direction is the two inner peripheral sides provided in both ends in the container axial direction. It flows toward the openings 16a and 16c.

  Further, in the section 7b, the trunk side fluid 13 flowing in from the two inner peripheral side openings 16b provided at both ends in the container axial direction is directed to the outer peripheral side openings 15b provided in the intermediate part in the container axial direction. Will begin to flow.

  Therefore, in each of the compartments 7a, 7b, and 7c, the trunk side fluid 13 is disposed at both ends of the container axial direction in which the outer peripheral side openings 15a, 15b, and 15c and the inner peripheral openings 16a, 16b, and 16c are provided. In the region close to the portion, the flow component of the tube group cross flow is included, but in the region in between, the flow is mainly along the container axial direction.

  In the present embodiment, the outer peripheral side connection flow path 18 formed by the flow path forming member 25 on the outer side of the trunk 6 and the header member 26 including the inlet 27 of the trunk side fluid 13 provided on the outer side of the section 7a are: This is the same as in the first embodiment.

  On the other hand, the inner peripheral side connection flow path 17 has a closing member 19 provided inside the tube group installation region 7 with both the tube plate 2 on one end side in the container axial direction and the tube plate 4 on the other end side in the container axial direction. An inner peripheral partition member 22 shown in FIG. 1 (c) is disposed in a space between the end faces of the closing member 19 at both ends in the container axial direction and the tube plates 2 and 4 with a predetermined interval. A similar inner peripheral partition member 22 is provided.

  Further, in addition to the tube plate 4, the tube plate 2 is also provided with an opening 20 similar to the tube plate 4 shown in FIG. A tubular member 21 that protrudes inside the distribution header 3 along the axial direction of the container 1 is attached to the opening 20. The protruding end of the tubular member 21 is closed. Furthermore, one end side of the connection pipe 30 is connected to the tubular member 21 on the tube plate 2 side. The other end side of the connection pipe 30 protrudes outside through the container wall corresponding to the distribution header 3. The other end side of the connecting pipe 30 protruding to the outside is an outlet 30 a for the trunk side fluid 13.

  The multitubular heat exchanger of the seventh embodiment having the above configuration can also be used in the same manner as in the first embodiment to exchange heat between the tube-side fluid 12 and the trunk-side fluid 13.

  In the multi-tube heat exchanger of the present embodiment, the flow of the trunk side fluid 13 in each of the compartments 7a, 7b, 7c includes a flow component in the container axial direction. , 7b, 7c, in the region between the intermediate portion in the container axial direction and both ends in the container axial direction, the trunk side fluid 13 mainly flows along the container axial direction.

  For this reason, the same effect as the multitubular heat exchanger of the first embodiment can be obtained also by the multitubular heat exchanger of the present embodiment.

  Furthermore, in the present embodiment, the flow of the trunk side fluid 13 may be reversed with the outlet 30a of the connection pipe 30 as an inlet and the inlet 27 of the header member 26 as an outlet.

  In the present embodiment, the body side fluid 13 is divided into two sections near one end and the other end with the middle portion in the container axial direction sandwiched between the compartments 7a, 7b, and 7c. When the dimension along the container axial direction of the tube group installation region 7 is large, it is possible to obtain an advantageous configuration for suppressing the flow path of the trunk side fluid 13 from becoming excessively long.

  Here, the arrangement pattern of the flow path of the trunk side fluid 13 provided in the multitubular heat exchanger according to the present invention, which will be apparent from the above-described embodiments, will be described.

  In the multi-tube heat exchanger of the present invention, a plurality of sections formed in the circumferential direction of the tube group installation region 7 may be configured to form a single distribution channel passing through all sections, or the number of sections However, when it is a number having a divisor other than 1 and the number thereof, a configuration may be adopted in which a plurality of distribution channels are formed by connecting sections divided into divisors.

  Further, when the distribution path of the trunk side fluid 13 of one system has a configuration in which an even number of sections are connected, the upstream end (starting end) and the downstream end (terminal) of the distribution path are both partitioned. Any of the structure used as the inner peripheral side opening part of this and the structure used as the outer peripheral side opening part of a division may be sufficient.

  On the other hand, when the distribution path of the trunk side fluid 13 is configured to connect odd-numbered sections, the upstream end (starting end) of the distribution path is used as the outer peripheral side opening of the section, and the downstream end (terminal). And the upstream end (starting end) of the distribution path as the inner peripheral side opening of the partition and the downstream end (terminal) as the outer peripheral side opening of the partition. Any of the configurations may be adopted.

  Furthermore, in the configuration including the distribution paths of the plurality of systems of the trunk side fluid 13, the direction in which the cylinder side fluid is moved through the compartments arranged in the circumferential direction in order for each distribution path of each system is the axis of the container 1 You may set to either the clockwise direction seeing from the one end side of a direction, or a counterclockwise direction.

[Eighth Embodiment]
FIG. 18 shows an eighth embodiment of the multi-tube heat exchanger, and FIGS. 18 (a), (b), and (c) are diagrams corresponding to FIGS. 1 (a), (b), and (c). .

  In FIGS. 18A, 18B, and 18C, the same components as those in FIGS. 1A, 1B, and 1C are denoted by the same reference numerals, and the description thereof is omitted.

  The multi-tube heat exchanger of this embodiment has the same configuration as that of the first embodiment shown in FIGS. 1A, 1B, and 1C, and each heat transfer tube 9 of the tube group 8 is filled with a catalyst 36. As a configuration. In addition, the tube-side fluid 12 circulated through each heat transfer tube 9 is a process fluid as a reaction raw material and a reaction product to be subjected to a catalytic reaction via the catalyst 36, and a cylinder-side fluid circulated outside each heat transfer tube 9. Reference numeral 13 denotes a configuration using a heat medium.

  In addition, in the multi-tube heat exchanger of the present embodiment, the cylinder side fluid 13 circulated to the outside of each heat transfer tube 9 causes a speed change due to the difference in the cross-sectional area of the flow path between the inner peripheral side and the peripheral part, and In view of the fact that the cylinder-side fluid 13 flows through each of the compartments 7a, 7b, 7c in turn, the cylinder-side fluid 13 used as the heating medium is a pipe that is a process fluid inside the pipe of each heat transfer pipe 9. It is assumed that the density, specific heat, thermal conductivity, and flow rate are set so that the heat transfer coefficient outside the tube is larger than the heat transfer coefficient of the side fluid 12. The body side fluid 13 as the heat medium may be a cooling medium when the catalytic reaction is an exothermic reaction, and a heating medium when the catalytic reaction is an endothermic reaction. Furthermore, the kind of the heat medium may be appropriately selected according to the temperature condition desired for the catalytic reaction.

  In the multi-tube heat exchanger of the present embodiment, a catalytic reaction in which a reaction product is generated from a reaction raw material by the catalyst 36 progresses inside each heat transfer tube 9.

  At this time, as described above, in each heat transfer tube 9, the heat transfer coefficient inside the tube is made smaller than the heat transfer coefficient outside the tube, and thus the reaction raw material via the tube wall of each heat transfer tube 9. The heat transfer rate (overall heat transfer coefficient) between the tube-side fluid 12 serving as a reaction product and the body-side fluid 13 serving as a heat medium greatly depends on the heat transfer rate inside the tube. Therefore, in the multi-tube heat exchanger of the present embodiment, the heat transfer coefficient inside the tube is rate-limiting with respect to the overall heat passage rate in the tube wall inside / outside direction.

  Therefore, in the multitubular heat exchanger according to the present embodiment, the above-described speed change occurs in the trunk side fluid 13 serving as a heat medium, or a slight temperature change occurs due to the sequential passage through each of the compartments 7a, 7b, and 7c. Even if it occurs, the heat transfer rate outside the tube by the trunk side fluid 13 has a small contribution to the heat transfer rate. Therefore, the inside of each heat transfer tube 9 can be maintained at a substantially uniform temperature condition. Therefore, the multitubular heat exchanger of the present embodiment can be used as a multitubular reactor capable of causing the catalytic reaction to proceed uniformly in each heat transfer tube 9.

  Of course, the configuration in which each heat transfer tube 9 is filled with the catalyst 36 as in this embodiment may be applied to the above-described embodiments, application examples, and modifications.

  In addition, this invention is not limited only to each above-mentioned embodiment, an application example, and a modified example, The tube side fluid inlet 10 and the tube side fluid outlet 11 are replaced, and the tube plate of the other end part of the container 1 is carried out. The space partitioned by 4 may be used as the distribution header 3, and the space partitioned by the tube plate 2 at one end of the container 1 may be used as the collective header 5. In such a configuration, the flow direction of the tube-side fluid 12 is reversed with respect to the above-described embodiments, but the same effects as those of the embodiments can be obtained.

  The number of baffles provided in the tube group installation area 7 may be a number other than that illustrated. Therefore, the number of sections formed side by side in the circumferential direction in the tube group installation region may be other than the illustrated number.

  Examples of the arrangement of the heat transfer tubes 9 in the tube group 8 include a triangular arrangement and a square arrangement, but a regular arrangement other than the illustrated arrangement, or any other arrangement may be adopted. Moreover, you may change suitably the diameter of each heat exchanger tube 9, the number, and arrangement pitch. Furthermore, from the viewpoint of suppressing local passage of the trunk side fluid 13 in the tube group installation region 7, the gap between the heat transfer tubes 9 constituting the tube group 8 extends continuously in the radial direction. It is desirable to arrange the baffle according to the above, but other locations may be used.

  Ratio of axial dimension and diameter dimension of container 1, installation position of each tube sheet 2 and 4 in container 1, volume of distribution header 3 and collective header 5, distance between each tube sheet 2 and 4, each section The dimensions of the outer peripheral side opening and the inner peripheral side opening in the container axial direction are in various conditions desired for heat exchange processing such as the supply amount of the tube side fluid 12 and the trunk side fluid 13 and temperature conditions. Accordingly, it may be appropriately changed from the illustrated one.

  The tube side fluid 12 and the trunk side fluid 13 may be either gas or liquid.

  The multitubular heat exchanger of the present invention may be applied to a heat exchanger that performs any heat exchange treatment.

  The multitubular heat exchanger of the present invention may be used in a posture in which the axial center direction of the container 1 is oriented in any direction other than the vertical direction.

  If each heat transfer tube 9 needs to be supported for steadying at an intermediate position in the longitudinal direction, it may be supported by a tube support material such as a rod baffle in which wires and rods are combined in a lattice shape.

  Of course, various modifications can be made without departing from the scope of the present invention.

Regarding the multi-tube heat exchanger of the present invention, the first embodiment and its application example, the second embodiment, the third embodiment, the fourth embodiment and its first modification, the fifth embodiment and its modification, About each structure of 6th Embodiment, its 1st modification, 2nd modification, and 7th Embodiment, it is the heat transfer coefficient (heat | fever inside a pipe | tube) between the heat exchanger tube 9 and the pipe | tube side fluid 12 which distribute | circulates a pipe inner side. (Conductivity) h ₁ , heat transfer coefficient between the heat transfer tube 9 and the cylinder side fluid 13 that circulates outside the tube (heat transfer coefficient outside the pipe) h ₂ , the tube side fluid 12 and the cylinder side fluid 13 A numerical analysis was conducted on the heat transfer rate K through the tube wall of the heat transfer tube 9, the pressure loss on the tube side fluid 12 side, and the pressure loss on the body side fluid 13 side.

その解析結果を、以下の表１に示す。 The calculation of the heat transmission rate K was performed based on the following formula.

The analysis results are shown in Table 1 below.

  Comparative Example 1 in Table 1 is a conventional multi-tube heat exchanger, and in a tube group installation region, three donuts arranged in a plane perpendicular to the longitudinal direction of the heat transfer tube at three locations in the longitudinal direction of the heat transfer tube A four-stage flow path structure is provided by providing two disk-shaped baffles and one disk-shaped baffle.

  Further, Comparative Example 2 considers leakage from the gap between the heat transfer tube insertion hole and the heat transfer tube in each baffle in the same configuration as Comparative Example 1.

The leak calculation conditions were as follows.
Gap shape factor: Z = 67
Number of tubes: about 20000 The definition of Z is as follows.
Z = 2t / (D−d)
t: baffle thickness D: diameter of baffle tube insertion hole d: outer diameter of heat transfer tube

Regarding the configurations of Comparative Examples 1 and 2, similarly to the above, the heat transfer coefficient on the pipe side fluid side (heat transfer coefficient on the pipe inner side) h ₁ and the heat transfer coefficient on the trunk side fluid side (heat transfer coefficient on the outer side of the pipe) ) H ₂ , heat transfer rate K, pressure loss on the pipe side fluid side, and pressure loss on the body side fluid side are numerically analyzed.

  In addition, each structure mentioned above and the structure of the comparative examples 1 and 2 are the diameter of the heat exchanger tube 9, a pipe pitch, the number, the flow volume of the pipe side fluid 12, the flow volume of the trunk | drum side fluid 13, the diameter of the container 1, high Is set in the same way.

  Assuming that the heat transfer tube 9 is filled with a catalyst and the tube-side fluid 12 is a gas, the tube-side fluid 12 on the inside of the tube has a heat transfer coefficient as compared with the trunk-side fluid 13 on the outside of the tube. It is set to be low.

In Table 1 below, the heat transfer coefficients h ₁ and h ₂ and the heat transfer coefficient K are pipe side fluids that are circulated in the heat transfer pipes 9 common to the respective embodiments and Comparative Examples 1 and 2. The value of the analysis result of the heat transfer coefficient on the 12th side (heat transfer coefficient inside the pipe) h ₁ is set to 1.0 as a reference, and the analysis results of the respective items of the embodiments and comparative examples 1 and 2 are normalized. ing. As for the pressure loss, similarly to the above, the value of the analysis result of the pressure loss on the pipe-side fluid 12 side is set to 1.0, and the analysis result of each item of each embodiment and Comparative Examples 1 and 2 is used as the reference. It is standardized.

As is clear from the above results, in any of the embodiments, the heat transfer tube 9 and the comparative example 1 and 2 are compared with the multi-tube heat exchanger provided with the baffle perpendicular to the longitudinal direction of the heat transfer tube. heat transfer coefficient of the body-side fluid 13 side (the heat transfer coefficient of the abluminal) h ₂ is reduced. However, regarding the heat transfer rate K, which is an index of the heat exchange performance of the heat exchanger, the heat transfer rate h ₁ on the heat transfer tube 9 and the tube side fluid 12 side, which is a rate-determining factor, does not change. The passage rates K are values in the range of 0.92 to 0.76, respectively, and the heat exchange performance is not so lowered as compared with the heat passage rate K of Comparative Example 1 and Comparative Example 2 of 0.97. .

  On the other hand, in each embodiment, the pressure loss on the cylinder side fluid 13 side has a value in the range of 0.025 to 1.0, and 4.4 of the pressure loss on the cylinder side fluid side in Comparative Example 1. Further, it was found that the pressure loss on the trunk side fluid side of Comparative Example 2 could be reduced even when compared with the value of 1.8. Therefore, in the multi-tube heat exchanger of the present invention, it has been found that the pressure loss of the trunk side fluid 13 can be greatly reduced while suppressing the decrease in the heat transfer rate K, that is, suppressing the decrease in the heat exchange performance. did.

1 container, 2 tube plate, 3 distribution header, 4 tube plate, 5 collective header, 6 barrel, 7 tube group installation area, 7a, 7b, 7c partition, 71a, 71b partition, 72a, 72b, 72c, 72d, 72e, 72f section, 73a, 73b, 73c, 73d section, 74a, 74b, 74c, 74d, 74e, 74f, 74g, 74h section, 8 tube groups, 9 heat transfer tubes, 14a, 14b, 14c baffles, 141a, 141b baffles, 142a 142b, 142c, 142d, 142e, 142f baffle, 143a, 143b, 143c, 143d baffle, 144a, 144b, 144c, 144d, 144e, 144f, 144g, 144h baffle, 12 pipe side fluid (first fluid), 13 Body side fluid (second fluid), 15a, 15b, 15c Openings, 151a, 151b Peripheral openings, 152a, 152b, 152c, 152d, 152e, 152f Peripheral openings, 153a, 153b, 153c, 153d Peripheral openings, 154a, 154b, 154c, 154d, 154e, 154f , 154g, 154h Outer peripheral opening, 16a, 16b, 16c Inner peripheral opening, 161a, 161b Inner peripheral opening, 162a, 162b, 162c, 162d, 162e, 162f Inner peripheral opening, 163a, 163b, 163c, 163d Inner peripheral side opening, 164a, 164b, 164c, 164d, 164e, 164f, 164g, 164h Inner peripheral side opening, 17 Inner peripheral side connection flow path, 18 Outer peripheral side connection flow path, 36 Catalyst

Claims (4)

In the multi-tube heat exchanger for exchanging heat between the first fluid flowing through the heat transfer tube and the second fluid flowing outside the heat transfer tube,
A container,
A first fluid distribution header formed by partitioning with a tube plate at one end in the axial direction in the container;
An assembly header of the first fluid formed by partitioning with another tube plate at the other end in the axial direction in the container;
A tube group installation region that is annularly set in the space inside the barrel located between the tube plates in the container;
A tube group composed of a plurality of heat transfer tubes parallel to the axial direction of the container disposed in the tube group installation region;
In the tube group installation region, a plurality of sections formed in the circumferential direction by dividing a plurality of locations in the circumferential direction by baffles parallel to the axial direction of the container and along the radial direction;
An outer peripheral side opening and an inner peripheral side opening provided at positions deviated in the container axial direction on the outer peripheral side and inner peripheral side of each section;
The outer peripheral side connection channel connecting the outer peripheral side openings of two sections adjacent in the circumferential direction at a position along the outer surface of the trunk, or the inner peripheral side openings of the two sections adjacent in the circumferential direction are installed in a tube group Including either one or both of the inner peripheral side connection flow paths connecting through the space inside the region,
A multi-tube heat exchanger comprising a second fluid flow path to which at least two compartments are connected. The multi-tube heat exchanger according to claim 1, wherein each of the sections includes an outer peripheral side opening and an inner peripheral side opening on one end side and the other end side in the container axial direction. . The said each division shall be equipped with the outer peripheral side opening part in the intermediate part of a container axial direction, and shall be equipped with the inner peripheral side opening part at the both ends of a container axial direction. Multi-tube heat exchanger. The multi-tube heat exchanger according to any one of claims 1 to 3, wherein each of the heat transfer tubes is filled with a catalyst.

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