CN107013912B - Self-cooling injection type combustion device - Google Patents
Self-cooling injection type combustion device Download PDFInfo
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- CN107013912B CN107013912B CN201710400302.1A CN201710400302A CN107013912B CN 107013912 B CN107013912 B CN 107013912B CN 201710400302 A CN201710400302 A CN 201710400302A CN 107013912 B CN107013912 B CN 107013912B
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- cooling jacket
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/78—Cooling burner parts
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
The utility model provides a self-cooling injection type burner, includes a wall section of thick bamboo, wall section of thick bamboo is upper and lower both ends opening and forms the combustion chamber in its inside, wall section of thick bamboo bottom is equipped with a plurality of combustors along circumference, the combustor includes mixing tube and nozzle, the mixing tube has inlet end and air outlet end, the nozzle set up in the inlet end for to jet fuel in the mixing tube and utilize the injection effect with outside air-intake in the mixing tube, burner still includes the guide the air current way of the air flow of being inhaled, the air current way is followed the periphery of wall section of thick bamboo extends to the inlet end of mixing tube, make the air of being inhaled before arriving the inlet end of mixing tube cools off wall section of thick bamboo.
Description
Technical Field
The application relates to an injection type combustion device, in particular to a self-cooling injection type combustion device.
Background
The waste gas generated in the current oil gas exploitation process is difficult to recycle, and is discharged to a high altitude torch or a ground torch for combustion treatment. The existing injection type burner is a burner which does not need extra power to provide air, the air required by the combustion of the injection type burner is derived from the air ejected by the kinetic energy of the fuel gas, and the injected air is directly mixed with the fuel gas. The protective cover of the injection type combustion device, especially the uppermost protective cover works in a high-temperature environment for a long time, which can cause the requirement of the protective cover material for high temperature resistance, even if the service life of the high-temperature resistant material is limited, most of the protective covers have environmental protection problems, and the cost is high. Moreover, the protective cover has no cooling and radiation reducing measures, so that the protective cover has larger environmental radiation when the combustion device works.
Disclosure of Invention
In view of the above, the present application provides a self-cooling injection type combustion device.
The application provides a self-cooling injection type combustion device, which comprises a wall cylinder, wherein the wall cylinder is provided with openings at the upper end and the lower end, a combustion chamber is formed in the wall cylinder, a plurality of combustors are arranged at the bottom of the wall cylinder along the circumferential direction, the combustors comprise a mixing pipe and a nozzle, the mixing pipe is provided with an air inlet end and an air outlet end, the nozzle is arranged at the air inlet end and is used for injecting fuel into the mixing pipe and sucking external air into the mixing pipe by utilizing injection effect, and the combustion device further comprises an air flow channel for guiding the sucked air to flow, and the air flow channel extends from the periphery of the wall cylinder to the air inlet end of the mixing pipe, so that the sucked air cools the wall cylinder before reaching the air inlet end of the mixing pipe.
In an embodiment, the injection type combustion device comprises a plurality of layers of protective covers arranged along a vertical direction, each layer of protective cover is sealed in a circumferential direction to form a flame cavity with an upper opening end and a lower opening end, the radial width of the upper layer of protective cover is larger than that of the lower layer of protective cover in two layers adjacent to each other in the vertical direction, an injection area which is in fluid communication with the flame cavity is formed between the two adjacent layers of protective covers, the plurality of layers of protective covers comprise an uppermost protective cover, the uppermost protective cover comprises a wall cylinder, the plurality of burners are arranged in the injection area, and each burner deflects inwards relative to the vertical direction.
In an embodiment, the outside of the wall section of thick bamboo is equipped with cooling structure, cooling structure includes cooling jacket, cooling jacket with the interval forms the cooling runner between the outer wall of wall section of thick bamboo, be equipped with on the cooling jacket with cooling runner intercommunication's air inlet, the cooling runner is a part of air current way.
In an embodiment, the upper edge of the cooling jacket is in sealing connection with the upper edge of the wall cylinder, the cooling jacket is provided with a plurality of layers of windows which are circumferentially arranged at intervals and penetrate through the cooling jacket, and the windows jointly form the air inlet.
In an embodiment, each layer of windows is uniformly arranged along the circumferential direction of the cooling jacket, each layer of windows corresponds to each other in position in the vertical direction, and a partition part is arranged between two adjacent windows in the circumferential direction.
In one embodiment, the multi-layer window comprises an upper layer window disposed proximate to an upper edge of the cooling jacket and at least one lower layer window disposed below the upper layer window, the upper layer window having a cross-sectional area greater than a cross-sectional area of the at least one lower layer window.
In an embodiment, the cooling structure comprises a plurality of cooling rib plates arranged between the cooling jacket and the outer wall of the wall cylinder, each cooling rib plate is arranged corresponding to one window, each cooling rib plate is arranged along the vertical direction, the cooling rib plates are perpendicular to the outer wall of the wall cylinder and the inner wall of the cooling jacket at the same time, each cooling rib plate is positioned at the middle position of the corresponding window in the circumferential direction, and each cooling rib plate is provided with a plurality of cooling holes.
In an embodiment, the burner further comprises a supporting part and a burner base, the nozzle is fixedly mounted on the burner base, the upper end of the supporting part is connected to the lower edge of the mixing tube, the lower end of the supporting part is connected to the burner base, an annular tube for providing fuel for the burner is arranged outside the uppermost protective cover, a plurality of connecting branch tubes are arranged on the annular tube, and the tail ends of the connecting branch tubes are in sealing connection with the burner base, so that the connecting branch tubes are communicated with an air inlet of the nozzle.
In an embodiment, the uppermost protective cover comprises the wall cylinder and the cooling jacket, a sealing connection part is connected between the lower end of the uppermost protective cover and the supporting part, one end of the sealing connection part is communicated with the cooling flow passage, and the other end of the sealing connection part is in sealing connection with the supporting part, so that air in the cooling flow passage flows to the air inlet end of the mixing pipe.
In an embodiment, the sealing connection part comprises a tubular connection part formed by extending downwards from the lower edges of the wall cylinder and the cooling jacket and a containing part connected to the lower end of the connection part, the containing part is sleeved around the supporting part and is in sealing connection with the supporting part, a cavity in the connection part forms a connection flow passage, a cavity in the containing part forms an absorption chamber, one end of the connection flow passage is communicated with the cooling flow passage, the other end of the connection flow passage is communicated with the absorption chamber, the absorption chamber is communicated with the inside of the mixing pipe, and the air flow passage comprises a cooling flow passage, a connection flow passage and an absorption chamber.
In summary, the present application provides a self-cooling injection type combustion device, in which an air injection port is disposed at the outer periphery of a wall cylinder of a protective cover. A cooling jacket is added to the whole protective cover to form an air flow passage with one closed end, a cooling structure is arranged outside the wall cylinder, the cooling structure comprises the cooling jacket, the cooling flow passage is formed between the cooling jacket and the outer wall of the wall cylinder, and an air inlet communicated with the cooling flow passage is formed in the cooling jacket. When the burner is in operation, the fuel nozzle sprays high-speed fuel gas, a certain vacuum degree is caused to the air flow channel, and air is sucked from the outside of the protective cover, enters the mixing pipe of the burner along the cooling flow channel, is mixed with the fuel gas and then is sprayed out for burning. The inside of the protective cover is high-temperature flame, and the outside of the protective cover is normal-temperature air. The air flows through the outer wall of the wall cylinder and the radiating rib plates on the outer wall, and a large amount of heat is taken away through convection heat exchange to cool the protective cover.
The application introduces the air for supporting combustion into the protective cover for supporting combustion after cooling, thereby maintaining the advantages of the injection type burner, increasing the cooling of the protective cover, improving the combustion stability, prolonging the service life of the protective cover and reducing the radiation of the protective cover to the environment.
Drawings
FIG. 1 is an overall cross-sectional view of a self-cooling injection burner of the present application.
Fig. 2 is an enlarged schematic view of the structure of the portion a of the circle in fig. 1.
Detailed Description
Before the embodiments are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The application is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of the terms "comprising," "including," "having," and the like are intended to encompass the items listed thereafter and equivalents thereof as well as additional items. In particular, when "a certain element" is described, the present application is not limited to the number of the element as one, but may include a plurality of the elements.
The application provides a self-cooling injection type combustion device which comprises a plurality of layers of protective covers and a plurality of layers of venturi combustors, wherein the protective covers and the venturi combustors are arranged along the vertical direction, each layer of protective cover is sealed in the circumferential direction to form a flame cavity with an upper opening end and a lower opening end, and the radial width of the protective cover of the upper layer is larger than that of the protective cover of the lower layer in the two layers adjacent to each other in the vertical direction, so that an injection area which is in fluid communication with the flame cavity is formed between the two adjacent layers of protective covers. The multi-layer venturi burner comprises at least one upper-layer venturi burner and a bottom-layer venturi burner arranged in the lowest-layer protective cover, wherein the at least one upper-layer venturi burner is arranged on the outer peripheral surface of the protective cover and distributed at intervals along the circumferential direction of the protective cover, the upper part of each upper-layer venturi burner stretches into the injection area so that flames formed by the venturi burners are blocked by the next upper-layer protective cover at least in the horizontal direction, and the bottom-layer venturi burner is arranged in the lowest-layer protective cover.
The injection type combustion device comprises an uppermost protective cover, in the embodiment, the venturi burners are arranged in an injection area between the uppermost protective cover and the next protective cover, and each venturi burner is arranged to deflect inwards in the radial direction relative to the vertical direction. As the burner deflects radially inwards, the flame generated will be radially inwards away from the wall of the shield, so that the thermal stress of the shield can be reduced.
In the embodiment shown in fig. 1 and 2, the self-cooling injection burner comprises a plurality of shields arranged in a vertical direction, only the uppermost shield being shown. The multi-layer shield comprises an uppermost shield 10, the uppermost shield 10 comprises a wall cylinder 12, and the wall cylinder 12 is opened at the upper end and the lower end and forms a combustion chamber 14 inside. A plurality of burners 16 are circumferentially arranged in the injection zone at the bottom of the wall barrel 12, and in the illustrated embodiment, the plurality of burners 16 are all arranged to deflect radially inward relative to the vertical direction, so that flame burned by the burners 16 is far away from the inner wall of the wall barrel 12 of the uppermost protective cover 10, and thermal stress of the uppermost protective cover 10 is reduced. The burner 16 may be skewed at an angle of 3-15 degrees.
The burner 16 includes a combustion head 18, a mixing tube 20, a nozzle 22, and a burner mount 24. The mixing tube 20 has an inlet end 26 and an outlet end 28, and the burner head 18 is disposed at the outlet end 28 of the mixing tube 20 for burning a mixture of fuel gas and air; the nozzle 22 is provided at an air inlet end 26 of the mixing tube 20 to inject fuel gas into the mixing tube 20 and to suck external air into the mixing tube 20 by injection. The nozzle 22 is fixedly mounted on the burner base 24 and the burner head 18 is welded or integrally formed with the mixing tube 20.
In the illustrated embodiment, the combustor 16 further includes a support portion 30, the support portion 30 being of a thin plate structure, an upper end of the support portion 30 being connected to a lower edge of the mixing tube 20, a lower end of the support portion 30 being connected to the combustor base 24. The support 30 not only serves to fix the mixing tube 20 and the burner base 24, but also has a thin plate structure design to reduce vibration of the burner 16 to some extent when the burner 16 is operated.
The uppermost shield 10 is provided externally with an annular tube 32 for supplying fuel gas to the burner 16, and the annular tube 32 is provided with a plurality of connection branch tubes 34. Specifically, the number of the connecting branch pipes 34 is the same as the number of the burners 16, and the end of each connecting branch pipe 34 is sealingly connected to the burner mount 24 of the corresponding burner 16, so that the connecting branch pipe 34 communicates with the air inlet of the nozzle 22 to deliver the fuel gas into the nozzle 22. While the annular tube 32 also has the function of supporting the stationary burner 16.
The injection type combustion apparatus further includes an air flow path 36 for guiding the flow of the sucked air, the air flow path 36 extending from the periphery of the wall cylinder 12 to the air inlet end 26 of the mixing tube 20, so that the sucked air cools the uppermost shield 10 before reaching the air inlet end 26 of the mixing tube 20, and then the air enters the mixing tube 20 to be mixed with the fuel gas and burned.
Specifically, the exterior of the wall cylinder 12 is provided with a cooling structure comprising a cooling jacket 38, the cooling jacket 38 and the outer wall of the wall cylinder 12 being spaced apart to form a cooling flow passage 40, wherein the cooling flow passage 40 is part of the air flow passage 36. In the embodiment shown, the cooling jacket 38 is arranged parallel to the wall cylinder 12 and of the same length. The cooling jacket 38 is provided with an air inlet 42 communicating with the cooling flow passage 40. The upper edge of the cooling jacket 38 is sealingly connected to the upper edge of the wall cylinder 12, and the lower edge of the cooling jacket 38 is flush with the lower edge of the wall cylinder 12.
In one embodiment, the uppermost shield 10 includes the wall cylinder 12 and the cooling jacket 38, and a plurality of sealing connection parts 44 are connected between the lower end of the uppermost shield 10 and the support part 30, and the number of the sealing connection parts 44 is the same as the number of the burners 16. A sealed passageway is formed in the sealed connection 44 in communication with the cooling flow passage 40 and the mixing tube 20, the sealed passageway being part of the air flow passage 36 such that air in the cooling flow passage 40 may flow through the sealed passageway to the air inlet end 26 of the mixing tube 20.
The sealing connection portion 44 has one end in communication with the cooling flow path 40 and the other end in sealing connection with the support portion 30 so that air in the cooling flow path 40 flows into the mixing tube 20. Specifically, the sealing connection portion 44 includes a tubular connection portion 46 formed by extending downward from the lower edges of the wall tube 12 and the cooling jacket 38, and a housing portion 48 connected to the lower end of the connection portion 46, the housing portion 48 being fitted around the support portion 30 and being connected to the side edges of the support portion 30 in a sealing manner. In the illustrated embodiment, the cross-sectional area of the connecting portion 46 presents a tapering trend in a vertically downward direction, the cavity within the connecting portion 46 forming the connecting flow passage 50 and the cavity within the containing portion 48 forming the absorption chamber 52. The both ends of the connection flow passage 50 communicate with the cooling flow passage 40 and the absorption chamber 52, respectively, and the absorption chamber 52 communicates with the inside of the mixing tube 20, wherein the connection flow passage 50 and the absorption chamber 52 are both part of the air flow passage 36, i.e., the air flow passage 36 includes the cooling flow passage 40, the connection flow passage 50 and the absorption chamber 52 which communicate with each other.
The cooling jacket 38 is provided with an air inlet 42 communicating with the cooling flow passage 40. Specifically, the cooling jacket 38 is provided with a plurality of layers of windows 54 extending through the cooling jacket 38 and spaced circumferentially about the uppermost protective cover 10, and all of the windows 54 collectively define the air inlet 42.
The multi-layer window 54 includes an upper layer window 54 disposed proximate the upper edge of the cooling jacket 38 and at least one lower layer window 54 disposed below the upper layer window 54, the upper layer window 54 having a cross-sectional area greater than the cross-sectional area of the at least one lower layer window 54. Since the upper temperature of the shield is higher than the lower temperature, the windows 54 on the cooling jacket 38 are provided in multiple layers and the cross-sectional area of the upper window 54 is greater than the cross-sectional area of at least one lower window 54 in order to distribute cooling air so that the upper window 54 can draw in more air to cool the hotter shield upper portion.
In the illustrated embodiment, the window 54 is provided as a rectangle. The windows 54 are arranged in three layers, the three layers of windows 54 are uniformly distributed along the circumferential direction of the cooling jacket 38, each layer of windows 54 corresponds to each other in position in the vertical direction, and a partition portion 56 is arranged between two circumferentially adjacent windows 54. The uppermost window 54 has a cross-sectional area greater than the cross-sectional areas of the intermediate window 54 and the lowermost window 54. For example, the middle layer window 54 is the same size as the lowermost layer window 54, the uppermost layer window 54 has a length in the vertical direction that is greater than the lengths of the middle layer window 54 and the lowermost layer window 54, for example, the uppermost layer window 54 has a length that is twice the length of the middle layer window 54 and the lowermost layer window 54, and the three layer windows 54 have the same width.
It should be understood that the design of the windows 54 in the above embodiment is merely illustrative, and in other embodiments, the windows 54 may be arranged in other manners, for example, three layers of windows 54 may be staggered with each other, according to actual design requirements. The size of the three-layer window 54 may be of other designs, and the application is not limited in this regard.
It should also be appreciated that in other embodiments, the number of layers of the window 54 may be appropriately set depending on the length of the cooling jacket 38 and other design requirements, and that the window 54 may be designed in other shapes, such as an inverted trapezoid, or a combination of shapes.
In the illustrated embodiment, the cooling structure further includes a plurality of cooling ribs 58 disposed between the cooling jacket 38 and the outer wall of the wall cylinder 12, each cooling rib 58 being located at a corresponding window 54. The heat dissipation rib plates 58 are used for exchanging heat between the air sucked into the window 54 and the heat dissipation rib plates 58, so that the wall cylinder 12 is cooled, and the heat dissipation rib plates 58 are connected between the cooling jacket 38 and the wall cylinder 12 to form a structural support, so that a cooling structure is more stable. Each of the heat radiation rib plates 58 is arranged in the axial direction of the combustion apparatus, and the heat radiation rib plates 58 are perpendicular to the outer wall of the wall cylinder 12 and the inner wall of the cooling jacket 38 at the same time, and each of the heat radiation rib plates 58 is provided at an intermediate position in the circumferential direction of the corresponding window 54.
In this embodiment, a plurality of heat dissipation holes 60 are provided on each heat dissipation rib 58 to increase the surface area of the heat dissipation rib 58, thereby promoting heat dissipation.
It should be understood that the above-described arrangement of the heat dissipating ribs 58 is only a preferred embodiment of the present application, and in other embodiments, the heat dissipating ribs 58 may be arranged in other manners, such as by designing the heat dissipating ribs 58 at an angle to the cooling jacket 38 and the outer wall of the wall cylinder 12, depending on the specific design requirements of the combustion device.
When the protective cover works, the nozzle 22 injects fuel gas to cause the air flow channel 36 to form a certain vacuum degree, normal-temperature air outside the protective cover 10 at the uppermost layer is sucked into the cooling flow channel 40 through the window 54 due to negative pressure, the air passes through the heat dissipation rib plate 58 and the cooling flow channel 40, and heat transferred from the inner wall of the wall cylinder 12 is taken away through convection heat exchange, so that the protective cover 10 at the uppermost layer is cooled, and the working environment of the protective cover 10 at the uppermost layer is improved.
The self-cooling injection type combustion device provided by the application keeps the advantages of the injection type combustor, and increases the cooling function for the protective cover. The heat dissipation rib plates 58 are arranged to strengthen heat transfer, and the air participating in combustion supporting firstly participates in cooling the protective cover and then participates in combustion. The enthalpy value of the mixed gas in the mixing pipe 20 is improved, so that the combustion stability is improved, the service life of the protective cover is prolonged, and the radiation of the protective cover to the environment is reduced.
It should be noted that, since the flame is mainly concentrated in the flame cavity of the uppermost shield when the combustion apparatus is in operation, the temperature of the uppermost shield is highest. In the above examples, the cooling structure is provided only on the uppermost shield of the combustion apparatus, but this is only a preferred embodiment of the present application, and in other examples, the cooling structure may be provided on one lower shield or a plurality of lower shields at the same time according to the actual situation of the combustion apparatus, and the present application is not limited thereto.
In summary, the present application provides a self-cooling injection type combustion device, in which an air injection port is disposed at the outer periphery of a wall cylinder of a protective cover. A cooling jacket is added to the whole protective cover to form an air flow passage with one closed end, a cooling structure is arranged outside the wall cylinder, the cooling structure comprises the cooling jacket, the cooling flow passage is formed between the cooling jacket and the outer wall of the wall cylinder, and an air inlet communicated with the cooling flow passage is formed in the cooling jacket. When the burner is in operation, the fuel nozzle sprays high-speed fuel gas, a certain vacuum degree is caused to the air flow channel, and air is sucked from the outside of the protective cover, enters the mixing pipe of the burner along the cooling flow channel, is mixed with the fuel gas and then is sprayed out for burning. The inside of the protective cover is high-temperature flame, and the outside of the protective cover is normal-temperature air. The air flows through the outer wall of the wall cylinder and the radiating rib plates on the outer wall, and a large amount of heat is taken away through convection heat exchange to cool the protective cover. The application introduces the air for supporting combustion into the protective cover for supporting combustion after cooling, thereby maintaining the advantages of the injection type burner, increasing the cooling of the protective cover, improving the combustion stability, prolonging the service life of the protective cover and reducing the radiation of the protective cover to the environment.
The concepts described herein may be embodied in other forms without departing from the spirit or characteristics thereof. The particular embodiments disclosed are illustrative and not restrictive. The scope of the application is, therefore, indicated by the appended claims rather than by the foregoing description. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (7)
1. The self-cooling injection type combustion device comprises a wall cylinder, wherein the wall cylinder is provided with an opening at the upper end and the lower end and forms a combustion chamber in the wall cylinder, a plurality of combustors are arranged at the bottom of the wall cylinder along the circumferential direction, the combustors comprise a mixing pipe and a nozzle, the mixing pipe is provided with an air inlet end and an air outlet end, the nozzle is arranged at the air inlet end and is used for injecting fuel into the mixing pipe and sucking external air into the mixing pipe by utilizing injection effect, and the self-cooling injection type combustion device is characterized by further comprising an air flow channel for guiding the sucked air to flow, and the air flow channel extends from the periphery of the wall cylinder to the air inlet end of the mixing pipe so that the sucked air cools the wall cylinder before reaching the air inlet end of the mixing pipe;
the outside of the wall cylinder is provided with a cooling structure, the cooling structure comprises a cooling jacket, a cooling flow channel is formed between the cooling jacket and the outer wall of the wall cylinder at intervals, an air inlet communicated with the cooling flow channel is arranged on the cooling jacket, and the cooling flow channel is a part of the air flow channel;
the upper edge of the cooling jacket is in sealing connection with the upper edge of the wall cylinder, the cooling jacket is provided with a plurality of layers of windows which are circumferentially arranged at intervals and penetrate through the cooling jacket, and the windows form the air inlet together;
the cooling structure comprises a plurality of cooling rib plates arranged between the cooling jacket and the outer wall of the wall cylinder, each cooling rib plate is located in a corresponding window, each cooling rib plate is arranged in the vertical direction and is perpendicular to the outer wall of the wall cylinder and the inner wall of the cooling jacket, each cooling rib plate is located in the middle position of the corresponding window in the circumferential direction, and each cooling rib plate is provided with a plurality of cooling holes.
2. The self-cooling, injection-type combustion apparatus of claim 1, wherein said injection-type combustion apparatus comprises a plurality of shield layers arranged in a vertical direction, each shield layer being circumferentially closed to form a flame chamber having upper and lower open ends, the radial width of the upper shield layer being greater than the radial width of the lower shield layer in two vertically adjacent shield layers such that an injection zone in fluid communication with said flame chamber is formed between the adjacent shield layers, said plurality of shield layers comprising an uppermost shield layer comprising said wall cylinder, said plurality of burners being disposed in said injection zone, and each of said burners being deflected radially inwardly relative to the vertical direction.
3. The self-cooling injection type combustion device according to claim 1, wherein each layer of windows is uniformly arranged along the circumferential direction of the cooling jacket, each layer of windows corresponds to each other in position in the vertical direction, and a partition part is arranged between two adjacent windows in the circumferential direction.
4. A self-cooling injection burner apparatus as claimed in claim 3 wherein said multi-layer window comprises an upper layer window disposed adjacent an upper edge of said cooling jacket and at least a lower layer window disposed below said upper layer window, said upper layer window having a cross-sectional area greater than a cross-sectional area of said at least lower layer window.
5. The self-cooling injection type combustion device as claimed in claim 2, wherein the burner further comprises a supporting part and a burner base, the nozzle is fixedly installed on the burner base, the upper end of the supporting part is connected to the lower edge of the mixing tube, the lower end of the supporting part is connected to the burner base, an annular tube for supplying fuel to the burner is arranged outside the uppermost protective cover, a plurality of connecting branch tubes are arranged on the annular tube, and the tail ends of the connecting branch tubes are in sealing connection with the burner base, so that the connecting branch tubes are communicated with the air inlet of the nozzle.
6. A self-cooling injection type combustion device as set forth in claim 5, wherein said uppermost protective cover comprises said wall cylinder and a cooling jacket, a sealing connection part is connected between the lower end of said uppermost protective cover and said supporting part, one end of said sealing connection part is communicated with said cooling flow passage, and the other end is connected with said supporting part in a sealing manner, so that the air in said cooling flow passage flows to the air inlet end of said mixing tube.
7. The self-cooling injection type combustion device according to claim 6, wherein the sealing connection part comprises a tubular connection part formed by extending downwards from the lower edges of the wall cylinder and the cooling jacket and a containing part connected to the lower end of the tubular connection part, the containing part is sleeved around the supporting part and is in sealing connection with the supporting part, a cavity in the tubular connection part forms a connection flow passage, a cavity in the containing part forms an absorption chamber, one end of the connection flow passage is communicated with the cooling flow passage, the other end of the connection flow passage is communicated with the absorption chamber, the absorption chamber is communicated with the inside of the mixing pipe, and the air flow passage comprises a cooling flow passage, a connection flow passage and an absorption chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710400302.1A CN107013912B (en) | 2017-05-31 | 2017-05-31 | Self-cooling injection type combustion device |
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| CN201710400302.1A CN107013912B (en) | 2017-05-31 | 2017-05-31 | Self-cooling injection type combustion device |
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| CN107013912A CN107013912A (en) | 2017-08-04 |
| CN107013912B true CN107013912B (en) | 2023-09-19 |
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| WO2018218524A1 (en) * | 2017-05-31 | 2018-12-06 | 深圳智慧能源技术有限公司 | Self-cooling injection-type combustion device |
| CN108679609B (en) * | 2018-07-21 | 2023-09-19 | 深圳智慧能源技术有限公司 | Injection type combustion device |
| CN108679611B (en) * | 2018-07-21 | 2023-09-19 | 深圳智慧能源技术有限公司 | Burner assembly of injection type combustion device |
| CN110207125B (en) * | 2018-09-26 | 2024-08-02 | 华帝股份有限公司 | Nozzle for burner and burner |
| CN117189356B (en) * | 2023-10-20 | 2024-07-23 | 无锡明阳氢燃动力科技有限公司 | Hydrogen-overflow-preventing premixing pipe structure based on hydrogen gas turbine |
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| CN107013912A (en) | 2017-08-04 |
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