CN216143778U - Combustor and premixed air inlet type backflow annular combustion chamber - Google Patents
Combustor and premixed air inlet type backflow annular combustion chamber Download PDFInfo
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- CN216143778U CN216143778U CN202122059782.4U CN202122059782U CN216143778U CN 216143778 U CN216143778 U CN 216143778U CN 202122059782 U CN202122059782 U CN 202122059782U CN 216143778 U CN216143778 U CN 216143778U
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Abstract
The utility model discloses a combustor, which comprises a cylinder, a supporting seat, a fuel nozzle and an oil conveying pipe, wherein the supporting seat is arranged on the cylinder; the supporting seat is arranged in the middle of the cylinder body to divide the cylinder body into an upper gas collecting cavity and a lower premixing cavity; a vertical flow guide through hole is formed in the middle of the supporting seat; a circle of oblique flow holes are uniformly formed in the supporting seat around the flow guide through hole; the axis of the inclined flow hole is gradually close to the axis of the vertical flow guide through hole from top to bottom; the fuel nozzle is detachably connected with the supporting seat; the fuel nozzle extends into the flow guide through hole; an annular atomized air channel is formed between the outer wall of the fuel nozzle and the wall of the flow guide through hole; the annular atomizing air channel is communicated with the upper gas collection cavity and the lower premixing cavity of the cylinder body; the oil delivery pipe is used for communicating high-pressure fuel to the fuel nozzle. The utility model also discloses a premixed air inlet type backflow annular combustion chamber. The burner can solve the problem of excessive oil enrichment at the oil outlet of the fuel nozzle, and has simple structure and easy disassembly and maintenance of the fuel nozzle.
Description
Technical Field
The utility model relates to a gas turbine, in particular to a combustor and a premixing air inlet type backflow annular combustor.
Background
The modern gas turbine has stricter requirements on low pollution emission, and various advanced low NOx combustion technologies are developed in the field of combustion in recent years, wherein dry lean premixed combustion is the mainstream low NOx combustion technology and is characterized in that fuel and air are uniformly mixed before combustion reaction to realize low flame temperature and eliminate a local high-temperature region.
For micro gas turbines that employ centrifugal compressors and radial flow turbines, a representative combustor configuration is a reverse flow annular combustor. The main combustion zone of the backflow annular combustion chamber belongs to a single vortex backflow mode, the burners are usually arranged on the outer wall of a flame tube, the number of the burners is 4 to 6, fuel is injected along the tangential direction, no swirler is arranged, and the inclined main combustion hole jet flow is used for assisting in rotation. For liquid fuel, the flame temperature of the main combustion zone is not reduced due to the fact that a large number of liquid drop diffusion combustion modes exist in the main combustion zone.
Chinese patent application CN201710661065.4 discloses an oblique jet circular flow annular combustion chamber, which comprises main parts of a gas distribution chamber, an oblique jet swirl nozzle, an annular combustion chamber and the like. When the annular combustion chamber works, air and fuel enter a plurality of (6 to 24) inclined jet swirl nozzles which are circumferentially and symmetrically distributed through the air distribution chamber to generate swirl jet and enter the annular combustion chamber; the axis of the oblique-spraying swirl nozzle forms a certain angle with the bottom plane of the annular combustion chamber, so that the airflow entering the combustion chamber has a certain circumferential velocity component, circumferential motion is generated in the annular combustion chamber, and circumferential airflow mixing is enhanced. The inclined jet circulation annular combustion chamber can reduce the temperature distribution nonuniformity of the outlet of the combustion chamber, increase the residence time of a reaction zone and improve the ignition reliability, but the structure part is not compact.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a combustor which can eliminate the problem of excessive oil enrichment at an oil outlet of a fuel nozzle, has a simple structure and is easy to disassemble and maintain.
In order to solve the technical problem, the burner provided by the utility model comprises a cylinder 30, a supporting seat 31, a fuel nozzle 32 and an oil delivery pipe 33;
the support seat 31 is arranged in the middle of the cylinder 30, and divides the cylinder 30 into an upper gas collection cavity 303 and a lower premixing cavity 307;
a vertical flow guide through hole is formed in the middle of the supporting seat 31;
a circle of inclined flow holes 305 distributed in a centripetal manner are uniformly formed in the supporting seat 31 around the flow guide through holes; the axis of the inclined flow hole 305 gradually approaches to the axis of the vertical flow guide through hole from top to bottom;
the fuel nozzle 32 is detachably connected with the supporting seat 31;
the fuel nozzle 32 protrudes into the flow-through opening; an annular atomizing air channel 311 is formed between the outer wall of the fuel nozzle 32 and the wall of the flow guide through hole;
the annular atomizing air channel 311 is communicated with the upper gas collecting cavity 303 and the lower premixing cavity 307 of the cylinder 30;
the delivery line 33 is used to communicate high pressure fuel to the fuel nozzle 32.
Preferably, the fuel injector 32 is a pneumatic fuel injector.
Preferably, the oil outlet of the fuel nozzle 32 is flush with the bottom surface of the support seat 31.
Preferably, the support seat 31 is uniformly provided with a circle of vertical straight flow holes 306 around the circle of diagonal flow holes 305.
Preferably, a circle of premixing holes 308 are uniformly arranged on the upper cylinder wall of the premixing cavity 307 along the circumferential direction;
high pressure air can be injected into the premix chamber 307 of the bowl 30 through the premix orifice 308.
Preferably, the premix bore 308 is a tangential bore.
Preferably, the premixing holes 308 are radial inclined holes, and the axis of the premixing holes 308 gradually approaches the axis of the barrel from top to bottom.
Preferably, the inner diameter of the premixing chamber 307 of the barrel 30 of the burner 3 is gradually increased from top to bottom.
Preferably, the inside diameter of the premixing chamber 307 of the barrel 30 of the burner 3 is the same from top to bottom.
Preferably, a circle of air inlet holes 304 are uniformly formed in the wall of the air collecting cavity 303 along the circumferential direction;
high-pressure air can be injected into the air collecting cavity 303 of the cylinder 30 through the air inlet holes 304.
Preferably, the outer wall of the fuel nozzle 32 is provided with swirl vanes;
the outer wall of the fuel nozzle 32 and the swirl vanes are matched with the wall of the flow guide through hole of the support seat 31 to form the annular atomizing air channel 311;
the swirl vane is used for generating swirl for the auxiliary high-pressure air.
Preferably, a circle of premixing holes 308 are uniformly arranged on the upper cylinder wall of the premixing cavity 307 along the circumferential direction;
high-pressure air can be sprayed into the premixing cavity 307 of the barrel 30 through the premixing holes 308;
the swirl vanes on the outer wall of the fuel nozzle 32 rotate in the same direction as the air flow created when the premix bore 308 is a tangential bore.
The utility model also provides a premixed air inlet type backflow annular combustion chamber comprising the combustor, and the premixed air inlet type backflow annular combustion chamber also comprises an annular flame tube 2;
the plurality of burners 3 are uniformly arranged at the head of the annular flame tube 2 along the circumferential direction to form a burner 3 array;
the burner 3 passes through the head of the annular flame tube 2, and the outlet at the lower end of the tube body 30 of the burner is arranged in the cavity of the annular flame tube 2;
the angle of inclination of each burner centerline with respect to the central axis of the annular flame tube 2 is greater than 18 ° and less than 80 °.
Preferably, 3 ~ 8 combustors 3 evenly set up in 2 heads of annular flame tube along circumference.
Preferably, a processing gap is left between the lower end of the cylinder 30 of the burner 3 and the inner wall and the outer wall of the annular flame tube 2.
Preferably, the annular flame tube 2 is provided with divergent cooling holes 203 in the middle of the outer wall thereof, outer impingement cooling holes 204 in the upper portion of the outer wall thereof, and inner impingement cooling holes 205 in the upper portion of the inner wall thereof.
Preferably, the annular flame tube 2 is provided with an inner mixing hole 206 at the lower part of the inner wall thereof and an outer mixing hole 202 at the lower part of the outer wall thereof.
Preferably, the premixed air inlet type backflow annular combustion chamber further comprises an annular casing 1;
the annular casing 1 is sleeved outside the annular flame tube 2;
the flange of the combustor 3 is fixed on the inclined step of the head of the annular casing 1 and is fixedly connected by a sealing flange 300.
In the burner 3 of the present invention, a part of the high pressure air entering the upper gas collecting chamber 303 is sprayed into the lower premixing chamber 307 as auxiliary atomization air through the annular atomization air channel 311, and the other high pressure air entering the upper gas collecting chamber 303 is sprayed into the lower premixing chamber 307 through the inclined flow holes 305, so as to enhance the fuel oil sprayed from the oil outlet of the atomized fuel oil nozzle 32 and blow off the wall surface oil deposit. In the burner 3 of the first embodiment, the high-pressure air injected from the oblique flow hole 305 impacts the fuel spray (atomizing cone) near the fuel outlet of the fuel nozzle 32, so that the disadvantage of excessive fuel enrichment at the fuel outlet of the fuel nozzle 32 is effectively overcome, and the burner also has the advantages of simple structure and easy disassembly and maintenance of the fuel nozzle 32.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the present invention are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a cross-sectional view of an embodiment of the burner of the present invention;
FIG. 2 is a cross-sectional view of another embodiment of the burner of the present invention;
FIG. 3 is a cross-sectional view of yet another embodiment of the burner of the present invention;
FIG. 4 is a schematic view of a burner of an embodiment of the premixed charge recirculation annular combustor of the present invention installed in a liner;
FIG. 5 is a schematic view of an annular casing surrounding an annular flame tube according to an embodiment of the premixed intake type annular backflow combustor of the present invention.
The reference numbers in the figures illustrate:
3, a burner; 30 cylinder bodies; 31, supporting a seat; 32 fuel nozzles; 33 an oil delivery pipe; 303, a gas collection cavity; 307 a premix chamber; 305 a diagonal flow hole; 32 fuel nozzles; 31, supporting a seat; 311 an annular atomizing air channel; 306 a straight-flow hole; 308 a premix bore; 304 air intake holes; 2, a ring-shaped flame tube; 203 divergent cooling holes; 204 outer impingement cooling holes; 205 impingement cooling holes therein; 206 inner mixing holes; 202 outer mixing holes; 1, an annular casing; 300 seal the flange.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1, 2 and 3, the burner 3 includes a cylinder 30, a support seat 31, a fuel nozzle 32, and a fuel delivery pipe 33;
the support seat 31 is arranged in the middle of the cylinder 30, and divides the cylinder 30 into an upper gas collection cavity 303 and a lower premixing cavity 307;
a vertical flow guide through hole is formed in the middle of the supporting seat 31;
a circle of inclined flow holes 305 distributed in a centripetal manner are uniformly formed in the supporting seat 31 around the flow guide through holes; the axis of the inclined flow hole 305 gradually approaches to the axis of the vertical flow guide through hole from top to bottom;
the fuel nozzle 32 is detachably connected with the supporting seat 31;
the fuel nozzle 32 protrudes into the flow-through opening; an annular atomizing air channel 311 is formed between the outer wall of the fuel nozzle 32 and the wall of the flow guide through hole;
the annular atomizing air channel 311 is communicated with the upper gas collecting cavity 303 and the lower premixing cavity 307 of the cylinder 30;
the delivery line 33 is used to communicate high pressure fuel to the fuel nozzle 32.
Preferably, the fuel injector 32 is a pneumatic fuel injector.
Preferably, the oil outlet of the fuel nozzle 32 is flush with the bottom surface of the support seat 31.
In the burner 3 of the first embodiment, a part of the high-pressure air entering the upper air collecting chamber 303 is injected into the lower premixing chamber 307 as auxiliary atomizing air through the annular atomizing air passage 311, and the other high-pressure air entering the upper air collecting chamber 303 is injected into the lower premixing chamber 307 through the inclined flow holes 305, so as to enhance the fuel oil sprayed from the oil outlet of the atomized fuel oil nozzle 32 and blow off the wall deposited oil. In the burner 3 of the first embodiment, the high-pressure air injected from the oblique flow hole 305 impacts the fuel spray (atomizing cone) near the fuel outlet of the fuel nozzle 32, so that the disadvantage of excessive fuel enrichment at the fuel outlet of the fuel nozzle 32 is effectively overcome, and the burner also has the advantages of simple structure and easy disassembly and maintenance of the fuel nozzle 32.
Example two
According to the burner 3 of the first embodiment, as shown in fig. 2 and 3, a circle of vertical straight-through holes 306 is uniformly formed around the circle of diagonal holes 305 of the support seat 31.
In the burner 3 of the second embodiment, the high-pressure air entering the upper air collecting chamber 303 can be respectively injected into the lower premixing chamber 307 through the inclined flow holes 305 and the straight flow holes 306, so that the high-pressure air is more uniformly injected into the premixing chamber 307, and the fuel spray distribution in the premixing chamber 307 is uniform.
EXAMPLE III
Based on the combustor 3 of the first embodiment, a circle of premixing holes 308 is uniformly arranged on the upper cylinder wall of the premixing cavity 307 along the circumferential direction;
high pressure air can be injected into the premix chamber 307 of the bowl 30 through the premix orifice 308.
Preferably, as shown in fig. 1 and 2, the premix holes 308 are tangential holes. The premixing holes 308 are tangential holes, so that high-pressure air flow entering the premixing cavity 307 of the barrel 30 can rotate to generate rotational flow, and the rotational flow is mixed with fuel oil spray entering the premixing cavity 307, so that fuel oil spray evaporation can be promoted, mixing can be enhanced, the fuel distribution uniformity of the outlet of the combustor 3 can be improved, and fuel oil can be effectively atomized under various power conditions.
Preferably, as shown in fig. 3, the premixing holes 308 are inclined holes in a radial direction, and the axis of the premixing holes 308 gradually approaches the axis of the barrel from top to bottom.
Preferably, as shown in fig. 1, the inner diameter of the premixing chamber 307 of the barrel 30 of the burner 3 is gradually increased from top to bottom.
Preferably, as shown in fig. 2 and 3, the inside diameter of the premixing chamber 307 of the barrel 30 of the burner 3 is the same from top to bottom.
In the combustor 3 of the third embodiment, the high-pressure air entering the premixing cavity 307 of the barrel 30 through the premixing hole 308 is mixed with the fuel oil entering the premixing cavity 307 by spraying, so that the spray evaporation is promoted, the mixing is enhanced, and the fuel distribution uniformity at the outlet of the combustor 3 is improved.
Example four
Based on the burner 3 of the first embodiment, a circle of air inlet holes 304 are uniformly arranged on the cylinder wall of the air collecting cavity 303 along the circumferential direction;
high-pressure air can be injected into the air collecting cavity 303 of the cylinder 30 through the air inlet holes 304.
In the burner 3 of the fourth embodiment, high-pressure air enters the gas collecting cavity 303 from a plurality of air inlet holes 304 arranged on the cylinder wall of the gas collecting cavity 303 of the cylinder 30.
EXAMPLE five
According to the combustor 3 of the first embodiment, the outer wall of the fuel nozzle 32 is provided with swirl vanes;
the outer wall of the fuel nozzle 32 and the swirl vanes are matched with the wall of the flow guide through hole of the support seat 31 to form the annular atomizing air channel 311;
the swirl vane is used for generating swirl for the auxiliary high-pressure air.
Preferably, a circle of premixing holes 308 are uniformly arranged on the upper cylinder wall of the premixing cavity 307 along the circumferential direction;
high-pressure air can be sprayed into the premixing cavity 307 of the barrel 30 through the premixing holes 308;
the swirl vanes on the outer wall of the fuel nozzle 32 rotate in the same direction as the air flow created when the premix bore 308 is a tangential bore.
EXAMPLE six
As shown in fig. 4, a premixed air intake type annular backflow combustor comprising the burners 3 of any one of the first to the fifth embodiments further comprises an annular flame tube 2;
the plurality of burners 3 are uniformly arranged at the head of the annular flame tube 2 along the circumferential direction to form a burner 3 array;
the burner 3 passes through the head of the annular flame tube 2, and the outlet at the lower end of the tube body 30 of the burner is arranged in the cavity of the annular flame tube 2;
the angle of inclination of each burner centerline with respect to the central axis of the annular flame tube 2 is greater than 18 ° and less than 80 °.
Preferably, 3 ~ 8 combustors 3 evenly set up in 2 heads of annular flame tube along circumference.
Preferably, a processing gap is left between the lower end of the cylinder 30 of the burner 3 and the inner wall and the outer wall of the annular flame tube 2, so as to allow the annular flame tube 2 to expand by heating to generate a certain deformation.
The head of the premixed air inlet type backflow annular combustion chamber in the sixth embodiment is provided with a plurality of groups of inclined jet combustors 3, the combustors 3 and the annular flame tube 2 form a combustion area, the central line of the outlet (the outlet at the lower end of the cylinder body) of the premixing cavity 307 of the combustor 3 with the premixing cavity 307 forms a certain angle with the central axis of the combustion chamber, premixed air is obliquely and spirally jetted and sprayed into the combustion area along the axial direction, a stable aerodynamic flow state is provided for the combustion area, the premixed air inlet type backflow annular combustion chamber is beneficial to reducing the flame temperature of a main combustion area, and pollutants are reduced.
EXAMPLE seven
Based on the premixed air inlet type backflow annular combustion chamber of the sixth embodiment, the annular flame tube 2 is provided with the divergent cooling holes 203 in the middle of the outer wall, the outer impingement cooling holes 204 in the upper portion of the outer wall, and the inner impingement cooling holes 205 in the upper portion of the inner wall.
In the premixed intake type annular backflow combustor according to the seventh embodiment, the wall surface cooling modes of the annular flame tube 2 are impingement film cooling and diffusion cooling modes, and cooling air enters the annular flame tube 2 through impingement cooling holes and diffusion cooling holes, so that the wall surface temperature and the exhaust temperature of the annular flame tube 2 are reduced, and the service life of the annular flame tube 2 is prolonged.
Example eight
Based on the premixed air inlet type backflow annular combustor of the sixth embodiment, the annular flame tube 2 is provided with inner mixing holes 206 at the lower part of the inner wall and outer mixing holes 202 at the lower part of the outer wall.
In the premixed air inlet type backflow annular combustion chamber of the eighth embodiment, all combustion air enters the combustor 3 from the air inlet holes 304 and the premixing holes 308 on the cylinder body of the combustor 3 and then enters the annular flame tube 2, and the blending air enters the annular flame tube 2 from the inner blending holes 206 on the inner wall and the outer blending holes 202 on the outer wall of the annular flame tube 2.
Example nine
According to the sixth embodiment, as shown in fig. 5, the premixed intake type backflow annular combustor further comprises an annular casing 1;
the annular casing 1 is sleeved outside the annular flame tube 2;
the flange of the combustor 3 is fixed on the inclined step of the head of the annular casing 1 and is fixedly connected by a sealing flange 300.
In the premixed air intake type annular backflow combustion chamber of the ninth embodiment, the inclined jet with the premixing cavity 307 is incident into the outlet center line of the premixing cavity 307 of the combustor 3, and forms a certain angle with the central axis of the combustion chamber, premixed air is obliquely jetted into the combustion zone along the axial direction, a stable aerodynamic flow state is provided for the combustion zone, the flame temperature of the main combustion zone is favorably reduced, the generation of pollutants is reduced, and the rest air enters the flame tube through the impingement cooling holes, the diffusion cooling holes and the mixing holes respectively, so that the wall surface temperature of the flame tube and the exhaust temperature are reduced. The structural design is suitable for engines with small requirements on the axial dimension but strict requirements on the radial dimension.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A burner is characterized by comprising a cylinder (30), a supporting seat (31), a fuel nozzle (32) and an oil delivery pipe (33);
the supporting seat (31) is arranged in the middle of the cylinder (30) and divides the cylinder (30) into an upper gas collection cavity (303) and a lower premixing cavity (307);
a vertical flow guide through hole is formed in the middle of the supporting seat (31);
a circle of inclined flow holes (305) which are distributed in a centripetal manner are uniformly formed in the supporting seat (31) around the flow guide through hole; the axis of the inclined flow hole (305) is gradually close to the axis of the vertical flow guide through hole from top to bottom;
the fuel nozzle (32) is detachably connected with the supporting seat (31);
the fuel nozzle (32) protrudes into the flow-through opening; an annular atomizing air channel (311) is formed between the outer wall of the fuel nozzle (32) and the wall of the flow guide through hole;
the annular atomizing air channel (311) is communicated with an upper gas collecting cavity (303) and a lower premixing cavity (307) of the cylinder (30);
the oil delivery pipe (33) is used for communicating high-pressure fuel to the fuel nozzle (32).
2. The burner of claim 1,
the fuel nozzle (32) is a pneumatic atomizing fuel nozzle.
3. The burner of claim 1,
and a circle of vertical straight flow holes (306) are uniformly formed in the supporting seat (31) around the circle of diagonal flow holes (305).
4. The burner of claim 1,
a circle of premixing holes (308) are uniformly formed in the upper cylinder wall of the premixing cavity (307) along the circumferential direction;
high-pressure air can be injected into a premixing cavity (307) of the barrel (30) through the premixing hole (308).
5. The burner of claim 4,
the premix bore (308) is a tangential bore; alternatively, the first and second electrodes may be,
the premixing holes (308) are radial inclined holes, and the axes of the premixing holes (308) gradually approach to the axis of the barrel from top to bottom;
the inner diameter of a premixing cavity (307) of a barrel (30) of the combustor (3) is gradually increased from top to bottom; alternatively, the first and second electrodes may be,
the inner diameter of a premixing cavity (307) of a barrel (30) of the combustor (3) is the same from top to bottom.
6. The burner of claim 1,
a circle of air inlet holes (304) are uniformly formed in the wall of the air collecting cavity (303) along the circumferential direction;
high-pressure air can be sprayed into a gas collection cavity (303) of the cylinder (30) through the gas inlet hole (304);
the oil outlet of the fuel nozzle (32) is flush with the bottom surface of the supporting seat (31).
7. The burner of claim 1,
the outer wall of the fuel nozzle (32) is provided with swirl vanes;
the outer wall of the fuel nozzle (32) and the swirl vanes are matched with the wall of the flow guide through hole of the supporting seat (31) to form the annular atomizing air channel (311);
the swirl vane is used for generating swirl for the auxiliary high-pressure air.
8. The burner of claim 7,
a circle of premixing holes (308) are uniformly formed in the upper cylinder wall of the premixing cavity (307) along the circumferential direction;
high-pressure air can be sprayed into a premixing cavity (307) of the barrel (30) through the premixing hole (308);
the rotational direction of the swirl vanes on the outer wall of the fuel nozzle (32) is the same as the rotational direction of the air flow generated when the premixing holes (308) are tangential holes.
9. A premixed charge-air recirculation annular combustor comprising a burner according to any one of claims 1 to 8, characterized in that it further comprises an annular flame tube (2);
the plurality of burners (3) are uniformly arranged at the head of the annular flame tube (2) along the circumferential direction to form a burner (3) array;
the burner (3) passes through the head of the annular flame tube (2), and the outlet at the lower end of the tube body (30) of the burner is arranged in the cavity of the annular flame tube (2);
the inclination angle of each burner central line relative to the central axis of the annular flame tube (2) is more than 18 degrees and less than 80 degrees.
10. The premixed charge recirculating annular combustor of claim 9,
3-8 burners (3) are uniformly arranged at the head of the annular flame tube (2) along the circumferential direction;
a processing gap is reserved between the lower end of the cylinder (30) of the combustor (3) and the inner wall and the outer wall of the annular flame tube (2);
the middle part of the outer wall of the annular flame tube (2) is provided with a divergent cooling hole (203), the upper part of the outer wall of the annular flame tube is provided with an outer impingement cooling hole (204), and the upper part of the inner wall of the annular flame tube is provided with an inner impingement cooling hole (205);
the lower part of the inner wall of the annular flame tube (2) is provided with an inner mixing hole (206), and the lower part of the outer wall of the annular flame tube is provided with an outer mixing hole (202);
the premixed air inlet type backflow annular combustion chamber further comprises an annular casing (1);
the annular casing (1) is sleeved outside the annular flame tube (2);
the flange of the combustor (3) is fixed on the step of the inclined plane of the head of the annular casing (1) and is fixedly connected by a sealing flange (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122059782.4U CN216143778U (en) | 2021-08-30 | 2021-08-30 | Combustor and premixed air inlet type backflow annular combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122059782.4U CN216143778U (en) | 2021-08-30 | 2021-08-30 | Combustor and premixed air inlet type backflow annular combustion chamber |
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| CN216143778U true CN216143778U (en) | 2022-03-29 |
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| CN202122059782.4U Active CN216143778U (en) | 2021-08-30 | 2021-08-30 | Combustor and premixed air inlet type backflow annular combustion chamber |
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