JPS6213998A - Heat exchanger of panel type - Google Patents

Abstract

PURPOSE:To enable to easily and conveniently provide a necessary maintenance work for a heat exchanger, by bending and cylindrically protruding the plates of hollow panels on the same side to the outer side around a through-hole, and by forming a back-up ring, whose free end abuts against the side face of a neighboring hollow panel and also fits to the external periphery of a ring sealing by each protruded part. CONSTITUTION:A back-up ring 21 is protruded on one side of a hollow panel 1. It is formed by bending and cylindrically protruding the plate 2 on one side to the outer side around a through-hole 10, leaving the part by which a reinforcement ring 11 is pinched unbended. A specified number of hollow panels 1 are juxtaposed so that a fluid feed pipe 8 and a fluid discharge pipe 9 can pierce through the through-holes 10 which are provided in the expanded parts 7 of hollow panels 1 respectively. In this case, an annular sealing parts 20 are respectively provided in the gap between a joint pipe 17 and a neighboring hollow panel 1, in the gap between neighboring panels 1, and on the outer side of the extreme hollow panel 1 in such a manner that they are fitted to the outer peripheries of a fluid feed pipe 8 and a fluid discharge pipe 9, and also fitted to the inner peripheries of back-up rings 21 protruding to one side of each hollow panel 1.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention involves arranging a plurality of hollow panels for heat exchange in parallel at appropriate intervals and integrating them, and allowing a fluid for heat exchange to flow through each of these hollow panels. It is a panel type heat exchanger that is mainly used in a storage tank of a fluid to be heat exchanged or in a flow path of the fluid, and the fluid flowing through each hollow panel and each hollow The present invention relates to a panel type heat exchanger that exchanges heat with a fluid located in a gap between panels or a fluid flowing in the gap.

(Prior art and its problems) The above-mentioned panel type heat exchanger includes a fluid supply pipe line and a fluid discharge pipe line that pass through each of a large number of hollow panels arranged in parallel in the parallel direction. , the fluid flowing through the fluid supply pipe is divided into each hollow panel, and the fluid flowing through a predetermined flow path in each hollow panel after heat exchange is merged into the fluid discharge pipe and discharged. However, in the conventional panel heat exchanger of this type, the fluid supply pipe and the discharge pipe were structured as follows.

That is, a short cylindrical body is fixedly protruded by welding from each through-hole provided opposite to the plates on both sides forming each hollow panel, and the cylindrical body protruding from both panels is provided between adjacent hollow panels. By fitting the bodies into each other and firmly connecting both cylindrical bodies to each other by welding at this fitting location, a fluid supply conduit or a fluid discharge conduit passing through each hollow panel in the parallel direction is constructed. was.

In a conventional panel heat exchanger having such a configuration, a large number of hollow panels arranged in parallel are integrally integrated by the fluid supply pipe and the discharge pipe in a manner that cannot be disassembled. -Finally, in this type of panel heat exchanger, the gap between each of the hollow panels is very narrow, 20 cm after bending, so if the hollow panels cannot be separated from each other as described above, this Even if scale from the fluid flowing through the gaps between the hollow panels adheres to the surfaces of the hollow panels, it is almost impossible to clean and remove it. Therefore, conventional panel-type heat exchangers are used only when the fluid flowing through the gaps between the hollow panels has almost no scale buildup, which greatly limits its applications. Ta.

On the other hand, in terms of manufacturing, as mentioned above, short cylindrical bodies must be fixed and protruded from each hollow panel on both sides by welding, and both cylindrical bodies must be fixedly protruded from each hollow panel in an extremely narrow space between two adjacent hollow panels. The disadvantage is that the manufacturing cost is extremely high due to the fact that the shaped bodies must be joined by welding.

In particular, it is impossible to manually weld the fitting part of both cylindrical bodies over the entire circumference within the narrow space between the two adjacent hollow panels as described above, so a special automatic welding machine is required. was needed.

(Means for Solving the Problems) The present invention proposes a panel type heat exchanger that can solve the above conventional problems, and its feature is that two plates are placed between them. A through hole is provided through which a fluid supply pipe and a fluid discharge pipe pass through the heat exchange hollow panel which are joined to each other to form a flow path, and a through hole is provided between the two plates on both sides around the through hole. A required number of said hollow panels are interposed with a reinforcing ring having a radial flow path to prevent the gap between said both side plates from narrowing, and have a fluid supply pipe and a fluid discharge pipe provided with a flow hole on the outer periphery. of,
A panel heat exchanger in which an annular sealing material is fitted onto the fluid supply pipe and the discharge pipe between each hollow panel so that the pipe can be pulled out and disassembled in the axial direction of the pipe, and is fastened and integrated. Furthermore, one of the plates on the same side of both sides of each hollow panel is bent and protruded outward in a cylindrical shape around the 11iffi hole, so that the 'f1 end is formed on the side surface of the adjacent hollow panel. The present invention has a backup ring portion which abuts and fits onto the annular sole material.

(Function) In the configuration of the present invention as described above, the space around the fluid supply pipe and the discharge pipe is completely isolated from the outside world by each hollow panel and the annular sealing material between each hollow panel. ing. Therefore, the fluid supplied into the fluid supply pipe is divided into each hollow panel from the circulation hole in the pipe peripheral surface via the radial flow path of the reinforcing ring in each hollow panel, and then flows into each hollow panel. The fluid flowing through the flow path joins into the discharge pipe from the radial flow passage of the reinforcing ring located outside the fluid discharge pipe via the communication hole on the pipe peripheral surface.

Therefore, one fluid (the first fluid) of the two fluids that exchange heat with each other is supplied to the panel heat exchanger of the present invention, and the panel heat exchanger of the present invention is used to store the other second fluid. By setting it in the tank or in the flow path of the second fluid, the first fluid flowing in each hollow panel as described above and the gap between each hollow panel or the gap between the two. A predetermined heat exchange action can be performed with the second fluid flowing inside.

Furthermore, when the hollow panels are tightened in the axial direction of the fluid supply pipe and the discharge pipe to integrate them, even if the annular sealing material between the hollow panels is sufficiently tightened to obtain the desired sealing effect, The reinforcing ring prevents the plates on both sides of each hollow panel from collapsing inward due to the reaction force of the tightening, and it is possible to secure a constant space for the fluid inlet and outlet of each hollow panel. Of course, by unfastening each hollow panel, each hollow panel and the annular sealing material can be pulled out in the axial direction from the fluid supply pipe and the discharge pipe, and separated from each other.

Furthermore, when the hollow panels are tightened and integrated in the axial direction of the fluid supply pipe and the discharge pipe, the bank amplifier ring prevents the interval between adjacent hollow panels from becoming less than a certain value, so that all The annular sealing material can be uniformly compressed to obtain the desired sealing effect. Furthermore, there is no need to alternately incorporate the back amplifier ring, which is a separate component, with the hollow panel.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a rectangular hollow panel for heat exchange, and a zigzag band-shaped flow path 3 is formed between two plates 2 on both sides of the flow path 3. Both plates 2 are integrally joined to each other by a seam welded portion 4. Although not shown in FIG. 2, both plates 2 are as shown in FIGS. 3 to 5.
The channels 3 are also recessed inwardly in an appropriate shape, and both plates 2 are welded at spot welds 6 in the recesses 5.
By joining them together, it is possible to increase the strength of the panel 1, to make the cross-sectional area of the flow path 3 constant, and to make the fluid flowing in the flow path 3 turbulent, thereby improving the heat exchange IA efficiency. Of course, the shape, length, and cross-sectional area of the flow path 3, or the arrangement, shape, and size of the recessed portion 5 may be set depending on the purpose of use of this heat exchanger, the type of fluid used, etc. Please note that the invention is not limited to what is shown in the drawings.

The hollow panel 1 is provided with circular wide portions 7 formed by bulging both plates 2 outward at both ends of the flow path 3. and second
A through hole 10 (see FIG. 6) for passing the fluid supply pipe 8 and fluid discharge pipe 9 shown in the figure is provided concentrically with the wide portion 7. As shown in FIGS. 1, 3, and 6, inside the wide portion 7, the through hole 10 has an inner diameter.
A reinforcing ring 11 having an outer diameter substantially equal to the diameter of the wide portion 7 and an inner diameter of the wide portion 7 is sandwiched therein, and the reinforcing ring 11 is positioned concentrically with the through hole 10 by the wide portion 7. Therefore, it is only necessary to fit it into the wide part 7 of one plate 2 before joining the plates 2 on both sides, and there is no need to fix it to the plate 2. Also, this reinforcing ring 11 is shown in Fig. 7. As shown, there is an annular groove 12 on the inner circumference.
Flow passages 13 are radially bored from the inside of the annular groove 12 to the outer peripheral surface of the ring at appropriate intervals in the circumferential direction.

Further, a bank amplifier ring portion 21 is provided protruding from one side of the hollow panel 1. This bank amplifier ring section 2
1 is one plate 2 around the through hole 10.
is constructed by bending and protruding outward into a cylindrical shape, leaving a portion where the reinforcing ring 11 is sandwiched.

The fluid supply pipe 8 and the discharge pipe 9 are connected through joint pipes 17 to the lower ends of a fluid supply main pipe 15 and a fluid discharge main pipe 16, respectively, which are attached to the support plate 14 in a penetrating state, as shown in FIGS. 1 and 2. The hollow panel 1 is fixedly protruded in a T-shape, and has a threaded portion 18 at the free end, and a slit-shaped communication hole 19 extending along the axial direction is provided in the mounting area of the hollow panel 1 in the circumferential direction. They are provided at multiple locations (four locations in the illustrated example).

A required number of the hollow panels 1 are arranged in parallel so that the fluid supply pipe 8 and the discharge pipe 9 pass through the through hole 10 of each wide portion 7. At this time, the joint pipe 17 and the adjacent hollow panel 1, between adjacent hollow panels 1, and on the outside of the outer end hollow panels 1, fittings are provided on the outside of the fluid supply pipe 8 and the discharge pipe 9, and protrude from one side of each hollow panel 1. The annular sealing material 20 is disposed so as to fit inside the backup ring portion 21. This annular pull member 20 can also be fitted into the bank anopuring portion 21 in advance. Of course, since the backup ring part 21 is not present at one end of both ends of the hollow panel group, a backup ring of a separate part can be externally fitted to the annular sealing material 20 disposed on this side as necessary. The annular sealing material 20 is in pressure contact with the side surface of the reinforcing ring 11 on the side of the hollow panel 1 on which the back amp ring part 21 is protruded, and on the side surface of the hollow panel 1 on the opposite side. The side surface of the panel 1 is pressed against the outer surface of the wide portion 7.

Each hollow panel 1 set in parallel to the fluid supply pipe 8 and discharge pipe 9 as shown in 1i is tightened with a nut 22 screwed into the free end threaded portion 18 of the fluid supply pipe 8 and discharge pipe 9. As a result, the fluid supply pipe 8 and the discharge pipe 9 are fastened and integrated in the axial direction. At this time, each annular sealing member 20 is compressed and deformed until the free end of the backup ring portion 21 comes into contact with the side surface of the adjacent hollow panel 1. Further, a cap 23 which also serves as a long hole is screwed into the free end threaded portion 18 of the fluid supply pipe 8 and the discharge pipe 9, and the free end openings of the fluid supply pipe 8 and the discharge pipe 9 are closed.

In addition, a part of both free end corners of each hollow panel 1 is connected to a connecting shaft rod 2 which passes through the arm welding part 4 of each hollow panel 1 and has a spacer 24 loosely fitted between each hollow panel 1.
5.26, and the screws (27a) screwed into the threaded portions at both ends of the shaft rod 25.26.

27b and are similarly fastened and integrated.

Reference numeral 28 denotes a plate for holding the central position of the double shaft rods 25 and 26, and is attached to the joint pipe 17 located at the center of the fluid supply pipe 8 and the discharge pipe 9 via a bracket 29 and a bolt nut 30. ing.

In the panel heat exchanger configured as above,
The fluid supplied from the main fluid supply pipe 15 enters the fluid supply pipe 8 through the joint pipe 17 and flows out through the slit-shaped flow hole 19. This fluid flows through the reinforcing ring 1 inside each hollow panel 1.
1 flows into one end of the zigzag-shaped flow path 3 in each hollow panel 1 via the radial flow path 13,
The radial flow path 13 of the reinforcing ring 11 flows through this zigzag flow path 3 and reaches the other end, and loosely fits into the fluid discharge pipe 9.
, the inner circumferential annular groove 12 and the slit-shaped flow hole 19 of the fluid discharge pipe 9 to flow into the fluid discharge pipe 9, and from within this fluid discharge pipe 9 via the joint pipe 17 and the fluid discharge main pipe 16. is discharged.

Therefore, one of the two fluids (the first fluid) which is caused to exchange heat with each other is supplied to the fluid supply main pipe 15, and this panel heat exchanger is installed in the storage tank of the other second fluid or By using the second fluid in the flow path, the second fluid flows in the gap between the hollow panels 1 while the first fluid flows in the flow path 3 of each hollow panel 1. A heat exchange action is performed between the fluid and the fluid, and a desired heat treatment involving heating or cooling is performed.

The panel heat exchanger used as described above can be disassembled and cleaned as follows. That is, the connecting shaft 25.
The nuts 27a and 27b screwed into the free ends of the fluid supply pipes 8 and 26 are removed, and the double shaft rods 25 and 26 are pulled out from each hollow panel 1, and each spacer 24 is removed. By removing the cap 23 and nut 22 screwed into the tubes, each hollow panel 1 and the annular sealing material 20 can be pulled out from the tubes 8 and 9 in the axial direction thereof. As a result, each hollow panel 1 can be freely taken out independently, so that necessary maintenance work can be easily performed.

Incidentally, as in the above embodiment, l+i'rM is applied to the hollow panel 1.
When forming the wide part 7 for positioning the reinforcing ring 11, the reinforcing ring 11 can be formed as wide as the inside of the channel 3 of the hollow panel 1. Not only is it convenient to mold the reinforcing ring 11, but there is no need to weld the reinforcing ring 11 to the plate 2 (
This makes assembly easy.

In addition, the radial flow passage 13 of the reinforcing ring 11 may be formed into a circumferentially elongated hole, or the slit-shaped flow holes 19 provided in the fluid supply pipe 8 and the discharge pipe 9 may be formed to be wide in the circumferential direction. At the same time, the radial flow passages 13 on the reinforcing ring 11 side are arranged closely at small intervals in the circumferential direction, so that when the hollow panel 1 is attached to the fluid supply pipe 8 and the discharge pipe, slit-shaped passages are always formed. Radial flow passages 13 in the flow holes 19
If the reinforcing ring 11 is configured so that the reinforcing ring 1 faces each other, it is not necessary to provide the inner circumferential annular groove 12, that is, the reinforcing ring 1
1 can prevent the distance between the plates 2 on both sides from becoming less than a certain level, and also prevents the flow of fluid between the fluid supply pipe 8 and the discharge pipe 9 and the inside of the hollow panel 1. It can be of any structure, and the molding materials include various metals, plastics,
The most preferable material, such as ceramic, may be selected in light of the type of fluid to be contacted, usage conditions, etc.

(Effects of the Invention) The panel-type heat exchanger of the present invention that can be implemented as described above connects each hollow panel to the fluid supply pipe and the fluid discharge pipe alternately with the annular sealing material in the pipe axial direction. It can be assembled easily and easily. Moreover, when each hollow panel is tightened in the axial direction of the fluid supply pipe and the discharge pipe to be integrated, the reinforcing ring prevents the plates on both sides of each hollow panel from bending inward due to the reaction force of the tightening. Since the spaces of the fluid inflow and outflow portions of each hollow panel can be secured to a constant width, the first fluid can smoothly flow into the hollow panel as expected. Furthermore, due to the presence of the reinforcing ring, a thin plate with the minimum necessary thickness can be used as the plate forming the hollow panel, which can be implemented economically.

Furthermore, when tightening and integrating each hollow panel in the axial direction of the fluid supply pipe and discharge pipe, the backup ring portion is used to uniformly apply all the annular sealing materials to obtain the desired sealing effect. Since the fluid flowing inside each hollow panel can be compressed to a maximum of Since the number of parts is small, it can be implemented at low cost, and assembly and disassembly work can be performed easily and easily.

In addition, it can be easily disassembled simply by unfastening each hollow panel and pulling out each hollow panel and annular sealing material from the fluid supply pipe and discharge pipe in the axial direction. If the scale of the two fluids adheres to the surface of each hollow panel, reducing heat exchange efficiency or unduly increasing the flow resistance of the second fluid, disassemble and separate each hollow panel as described above. As a result, necessary maintenance work such as removing scale from the surface of the hollow panel can be performed extremely easily. Therefore, the panel heat exchanger of the present invention can be used without any problem even under conditions where the second fluid is used where scale is likely to form and adhere.

Note that the fluid supply pipe and the fluid discharge pipe are completely isolated from the outside world by each hollow panel and the annular sealing material, which serves as a flow path for the second fluid, and there is no risk of contact with the second fluid. The supply pipe and the fluid discharge pipe need only be made of a material that does not have an adverse effect on the relationship with the first fluid flowing through these pipes, taking into account the conditions of both the second fluid and the second fluid. There is no need to select the material.For example, if the first fluid is water, hot water, steam, etc., even if the second fluid is strongly acidic, the fluid supply pipe and fluid discharge pipe should be made of inexpensive iron. It is economical because it can be made of similar materials (SS, SUS, etc.).

[Brief explanation of the drawing]

Fig. 1 is a partially longitudinal side view, Fig. 2 is a partially longitudinal front view, Fig. 3 is an enlarged sectional view taken along line A-A in Fig. 1, and Fig. 4 is a partially longitudinal sectional side view.
An enlarged cross-sectional view taken along the line B-B in the figure, Figure 5 is C-C in Figure 4.
FIG. 6 is an enlarged longitudinal sectional side view of the main part of the present invention. DESCRIPTION OF SYMBOLS 1... Hollow panel for heat exchange, 7... Hollow panel wide part, 8... Fluid supply pipe, 9... Fluid discharge pipe, 10...
...Through hole, 11...Reinforcing ring, 12...Inner peripheral annular groove, 13...Radial flow path, 15...Fluid supply main pipe, 16...Fluid discharge main pipe, 19... Slit-shaped circulation hole, 2°...Annular sealing material, 21...Backup ring part, 22.27a, 27b...Nand, 2
3... Cap that also serves as a lock nut, 24... Spacer, 25° 26... Shaft rod for connection, 28... Shaft rod support plate.

Claims (3)

[Claims] (1) A heat exchange hollow panel formed by joining two plates to each other so as to form a flow path between the two plates is provided with through holes through which a fluid supply pipe and a fluid discharge pipe are passed separately,
A reinforcing ring is interposed between the both side plates around the through hole to prevent the gap between the both side plates from narrowing and has a radial flow path, and a fluid supply having a flow hole on the outer periphery. The required number of hollow panels are fitted to the pipe and fluid discharge pipe so that they can be pulled out in the pipe axis direction and disassembled, with annular sealing material externally fitted to the fluid supply pipe and discharge pipe between each hollow panel. and a panel-type heat exchanger in which one of the plates on both sides of each of the hollow panels on the same side is bent and protrudes outward into a cylindrical shape around the through hole. A panel heat exchanger characterized in that the back-up ring portion has a free end abutting a side surface of an adjacent hollow panel and is fitted onto the annular sealing material. (2) The heat exchanger according to item (1), wherein the through-hole forming portion of the hollow panel is formed by bulging both side plates outward to form a wide portion, and the reinforcing ring is fitted into the wide portion. (3) The reinforcing ring is provided with an inner circumferential annular groove that communicates with the radial flow path.
Heat exchanger described in section ).