CN109185923B - Combustion chamber head device, combustion chamber and gas turbine - Google Patents
Combustion chamber head device, combustion chamber and gas turbine Download PDFInfo
- Publication number
- CN109185923B CN109185923B CN201810875943.7A CN201810875943A CN109185923B CN 109185923 B CN109185923 B CN 109185923B CN 201810875943 A CN201810875943 A CN 201810875943A CN 109185923 B CN109185923 B CN 109185923B
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- hole
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- combustion chamber
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
- F23R3/52—Toroidal combustion chambers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a combustion chamber head device, a fuel chamber and a gas turbine, which are used for improving the disassembly and assembly efficiency of the combustion chamber head device, so that the research and development time and cost of the combustion chamber are saved. The combustion chamber head apparatus includes: head inlet piece, gas collection casket, a plurality of main level fuel spray tube, flange, main level fuel pipe, auxiliary stay pole and level fuel pipe on duty, wherein: the head air inlet piece comprises a gas mixing cylinder and a plurality of premixed air passage holes, and an end plate is arranged at one end, close to the flange, of the gas mixing cylinder; the gas collecting box comprises an annular gas collecting cavity and a fixed connecting part which is fixedly connected with the end plate; a second through hole and a third through hole which are radially symmetrical are formed on one side of the annular gas collection cavity; the main-stage fuel spray pipes are fixed on the other side of the annular gas collection cavity, are communicated with the annular gas collection cavity and extend into the premix gas channel holes; the main-stage fuel pipe penetrates through and is fixed to the flange and the second through hole, the auxiliary supporting rod penetrates through and is fixed to the flange and the third through hole, and the duty-stage fuel pipe penetrates through and is fixed to the flange and penetrates through the first through hole.
Description
Technical Field
The invention relates to the technical field of gas turbines, in particular to a combustion chamber head device, a fuel chamber and a gas turbine.
Background
The gas turbine is an internal combustion power machine which uses continuously flowing gas as working medium to drive the impeller to rotate at high speed and convert the energy of fuel into useful work, and is a rotary impeller type heat engine.
The main structure of the gas turbine comprises a compressor, a turbine and a combustion chamber. The overall performance of the gas turbine is directly affected by the overall performance of the combustion chamber, a great amount of experiments are required to be carried out on the combustion chamber of the gas turbine in the research and development process, and in the process of the experiments, problems can occur on all parts, so that the parts with problems are required to be disassembled and replaced.
The problems of the prior art are that: parts such as a gas collecting box of the combustion chamber head device are connected in a welding mode, so that the parts such as the gas collecting box are inconvenient to check and replace, and sometimes even need to be reprocessed.
Disclosure of Invention
The embodiment of the invention aims to provide a combustion chamber head device, a fuel chamber and a gas turbine, so that the disassembly and assembly efficiency of the combustion chamber head device is improved, and the development time and cost of the combustion chamber are saved.
The embodiment of the invention provides a combustion chamber head device, which comprises: the flange fixedly connected with the head of the casing of the combustion chamber, the head air inlet piece coaxially arranged with the flange, the air collecting box, a plurality of main-stage fuel spray pipes, a main-stage fuel pipe, an auxiliary supporting rod and an on-duty-stage fuel pipe, wherein:
the head air inlet piece comprises a gas mixing cylinder and a plurality of premixed air channel holes which encircle the gas mixing cylinder and are parallel to the axial direction of the gas mixing cylinder, one end of the gas mixing cylinder, which is close to the flange, is provided with an end plate, and the center of the end plate is provided with a first through hole;
the gas collecting box comprises an annular gas collecting cavity and a fixed connecting part which is fixedly connected with one side, close to the flange, of the annular gas collecting cavity; a second through hole and a third through hole which are radially symmetrical are formed in one side, close to the flange, of the annular gas collection cavity; the main-stage fuel spray pipes are fixed on one side, far away from the flange, of the annular gas collection cavity, are communicated with the annular gas collection cavity and extend into the premix gas passage holes;
the main grade fuel pipe is fixedly connected with the flange and the second through hole in a penetrating mode, the auxiliary supporting rod is fixedly connected with the flange and the third through hole in a penetrating mode, and the duty grade fuel pipe is fixedly connected with the flange in a penetrating mode and penetrates through the first through hole.
Optionally, the fixed connection part is an annular fixed connection part arranged on the outer side wall of the inner circle of the annular gas collection cavity, and comprises a plurality of fixed holes which are arranged along the circumferential direction concentric with the annular fixed connection part; the end plate is provided with first threaded holes which are opposite to the fixed holes in number.
Preferably, the number of the fixing holes is 4-12, and the fixing holes are uniformly distributed.
Preferably, the flange has a fourth through hole opposite to the second through hole, a fifth through hole opposite to the third through hole, and a second threaded hole opposite to the first through hole; the main grade fuel pipe, the auxiliary support rod and the on-duty grade fuel pipe are provided with external threads, the main grade fuel pipe penetrates through the fourth through hole and is fixed on the flange through a pair of first nuts positioned on two sides of the fourth through hole, the auxiliary support rod penetrates through the fifth through hole and is fixed on the flange through a pair of second nuts positioned on two sides of the fifth through hole, and the on-duty grade fuel pipe is fixed on the flange through threaded connection with the second threaded holes.
Preferably, the plurality of primary fuel nozzles are threadably coupled to one side of the annular plenum.
Preferably, the plurality of premixed gas passage holes are uniformly distributed, and the plurality of main-stage fuel spray pipes and the plurality of premixed gas passage holes are arranged in one-to-one correspondence.
Optionally, the primary fuel pipe is welded to the second through hole; the auxiliary supporting rod is welded to the third through hole.
Optionally, the fuel outlet of the main stage fuel nozzle is arranged along the axial direction of the main stage fuel nozzle, or the fuel outlet of the main stage fuel nozzle is arranged along the radial direction of the main stage fuel nozzle.
According to the technical scheme, the fixed connection part of the gas collecting box of the combustion chamber head device is fixedly connected with the end plate of the head gas inlet piece, so that when the gas collecting box is to be checked or replaced in the research and development and operation process of the combustion chamber, the fastening piece for fastening the fixed connection part and the head gas inlet piece can be directly unscrewed, and the gas collecting box is conveniently detached. Compared with the prior art, the disassembly and assembly efficiency of the gas collecting box of the combustion chamber head device is greatly improved, so that the development time and cost of the combustion chamber are saved.
Based on the same inventive concept, embodiments of the present invention also provide a combustion chamber comprising a head arrangement as described in any of the preceding claims.
Based on the same inventive concept, embodiments of the present invention also provide a gas turbine comprising a combustor as described above.
The combustion chamber adopts foretell head device, when needs to examine, maintenance or change the gas collection casket, can directly unscrew the fastener between gas collection casket and the head inlet piece to the convenient gas collection casket dismantles, compares prior art, has practiced thrift the research and development cycle of combustion chamber greatly, has reduced research and development cost.
Drawings
FIG. 1 is a schematic view of a combustion chamber according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a combustion chamber head assembly according to an embodiment of the present invention;
FIG. 3 is a cross-sectional perspective view of a combustion chamber head assembly of an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a gas collecting box according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a gas collection cassette according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a head air intake according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of a head air intake according to an embodiment of the present invention.
Reference numerals:
a head air intake; 2-a gas collecting box; 3-primary fuel lance; 4-flanges;
5-primary fuel pipe; 6-auxiliary supporting rods; 7-duty grade fuel pipe; 8-mixing cylinder;
9-premix gas passage holes; 10-end plates; 11-a first through hole; 12-an annular gas collection cavity;
13-a fixed connection; 14-a second through hole; 15-a third through hole; 16-case; 17-a flame tube;
18-a high pressure air inlet; 19-high pressure air jet orifice; 20-jetting macropores by high-pressure air;
21-an air inlet end; 22-fixing holes; 23-a first threaded hole; 24-screw;
25-fourth through holes; 26-a fifth through hole; 27-a second threaded hole; 28-a first nut;
29-a second nut.
Detailed Description
In order to improve the dismounting efficiency of the combustion chamber head device and save the research and development time and cost of the combustion chamber, the embodiment of the invention provides the combustion chamber head device, a fuel chamber and a gas turbine. The present invention will be further described in detail with reference to the following examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
As shown in fig. 1 to 7, an embodiment of the present invention provides a combustion chamber head apparatus including: a flange 4 fixedly connected with the head of a casing 16 of the combustion chamber, a head air inlet piece 1, a gas collecting box 2, a plurality of main-stage fuel spray pipes 3, a main-stage fuel pipe 5, an auxiliary supporting rod 6 and an on-duty-stage fuel pipe 7 which are coaxially arranged with the flange 4, wherein:
the head air inlet piece 1 comprises a gas mixing cylinder 8 and a plurality of premixed air channel holes 9 which encircle the gas mixing cylinder 8 and are parallel to the axial direction of the gas mixing cylinder 8, one end of the gas mixing cylinder 8 close to the flange 4 is provided with an end plate 10, and the center of the end plate 10 is provided with a first through hole 11;
the gas collecting box 2 comprises an annular gas collecting cavity 12 and a fixed connecting part 13 which is fixedly connected with one side of the annular gas collecting cavity 12 close to the flange 4; a second through hole 14 and a third through hole 15 which are radially symmetrical are formed in one side, close to the flange 4, of the annular gas collection cavity 12; the plurality of main-stage fuel spray pipes 3 are fixed on one side of the annular gas collection cavity 12 far away from the flange 4, are communicated with the annular gas collection cavity 12, and extend into the premix gas passage holes 9;
the main-stage fuel pipe 5 penetrates and is fixed on the flange 4 and the second through hole 14, the auxiliary supporting rod 6 penetrates and is fixed on the flange 4 and the third through hole 15, and the duty-stage fuel pipe 7 penetrates and is fixed on the flange 4 and penetrates through the first through hole 11.
As shown in fig. 1, the combustion chamber generally includes a casing 16, a flame tube 17, an ignition device (not shown), and the like, in addition to the head device, wherein a high-pressure air inlet 18 is provided on the surface of the casing 16, and a high-pressure air injection small hole 19 and a high-pressure air injection large hole 20 are provided on the surface of the flame tube 17. The head air inlet piece 1 is fixed at the air inlet end 21 of the flame tube 17, the air mixing tube 8 and the premixed air passage holes 9 are led to the flame tube 17, and the flange 4 is fixedly installed with the head of the casing 16 through fasteners.
When the combustion chamber starts to work, firstly, the valve class fuel pipe 7 is opened, and fuel sequentially enters the flame tube 17 through the valve class fuel pipe 7 and the gas mixing tube 8; after a certain time interval, the main fuel pipe 5 is opened, and the fuel sequentially passes through the main fuel pipe 5, the gas collecting box 2, the main fuel spray pipes 3 and the premixed gas passage holes 9 to enter the flame tube 17, so that the fuel entering the flame tube 17 is ensured to be uniform in the section direction of the flame tube 17. The ignition device ignites fuel and air in the flame tube 17 to form high-temperature high-pressure fuel gas, and the fuel gas enters a turbine of the gas turbine to expand and do work.
In various alternative embodiments of the present invention, the specific structure of the fixed connection is not limited. As shown in fig. 3 to 7, the fixed connection portion 13 is an annular fixed connection portion disposed on an inner circular outer side wall of the annular gas collection chamber 12, and includes a plurality of fixed holes 22 arranged along a circumferential direction concentric with the annular fixed connection portion, wherein the number of the fixed holes 22 is 4-12, and the fixed holes are uniformly distributed; the end plate 10 is provided with the same number of first screw holes 23 located opposite to the fixing holes 22.
By providing the fixed connection portion 13 in a ring-like structure, the connection of the gas collecting channel 2 and the head gas inlet 1 can be made more reliable. When the gas collecting box 2 and the end plate 10 of the head gas inlet piece 1 are installed and connected, the annular fixed connection part 13 can be firstly erected on the end plate 10 of the head gas inlet piece 1, and then the gas collecting box 2 is fastened and connected through fasteners such as screws 24, so that the installation is more convenient. The specific number of fasteners for connecting the fixing connection portion 13 and the end plate 10 is not limited, and may be selected according to the weight of the gas collecting cartridge 2 and the head gas inlet 1.
As shown in fig. 3 to 5, in a preferred embodiment of the present invention, the flange 4 has a fourth through hole 25 opposite to the position of the second through hole 14, and a fifth through hole 26 opposite to the position of the third through hole 15; the primary fuel pipe 5 and the secondary support rod 6 have external threads, the primary fuel pipe 5 passing through the fourth through hole 25 and being fixed to the flange 4 by a pair of first nuts 28 located at both sides of the fourth through hole 25, and the secondary support rod 6 passing through the fifth through hole 26 and being fixed to the flange 4 by a pair of second nuts 29 located at both sides of the fifth through hole 26. Preferably, the flange 4 further has a second threaded hole 27 opposite to the first through hole 11, and the on-duty fuel pipe 7 has an external thread, and the on-duty fuel pipe 7 is fixed to the flange 4 by being screwed with the second threaded hole 27. The primary fuel pipe 5 is welded to the second through hole 14, and the auxiliary supporting rod 6 is welded to the third through hole 15.
With the above design, when the axial dimensions of the casing 16 and the flame tube 17 are adjusted due to design, processing or installation modes, the head device can be matched with the design and installation requirements of the combustion chamber by adjusting the distance H between the flange 4 and the end plate 10, and the length of the shift fuel tube 7 extending into the gas mixing tube 8 can be adjusted by rotating the shift fuel tube 7. Therefore, the head device has a larger application range, and further saves the development time and cost of the combustion chamber.
As shown in fig. 1 to 3, in a preferred embodiment of the present invention, a plurality of main stage fuel nozzles 3 are screwed to one side of an annular gas collection chamber 12.
When the combustion effect of different main-stage fuel spray pipes 3 is required to be tested, only the main-stage fuel spray pipes 3 are required to be unscrewed and replaced, and compared with the prior art, the development period of a combustion chamber is greatly saved, and the development cost is reduced.
In the preferred embodiment of the invention, the plurality of premix gas passage holes are uniformly distributed, and the plurality of main-stage fuel nozzles are arranged in one-to-one correspondence with the plurality of premix gas passage holes. This may result in a more uniform fuel entering the flame tube in the cross-sectional direction of the flame tube.
In alternative embodiments of the invention, the fuel outlets of the primary fuel nozzles may be disposed axially of the primary fuel nozzles; the fuel outlet of the main-stage fuel spray pipe can also be arranged along the radial direction of the main-stage fuel spray pipe, and the corresponding structural design can be carried out according to the fuel injection direction. In addition, the fuel outlets of the main-stage fuel spray pipes are at least two and are uniformly distributed along the circumferential direction of the main-stage fuel spray pipes, so that the fuel can be uniformly sprayed out in a dispersed manner.
As shown in fig. 1, based on the same inventive concept, an embodiment of the present invention also provides a combustion chamber including a head unit as in any one of the preceding claims.
The combustion chamber adopts foretell head device, when needs are examined, are maintained or are changed gas collection casket 2, can directly unscrew the fastener between gas collection casket 2 and the head air inlet piece 1 to the convenient dismantlement with gas collection casket 2 has practiced thrift the research and development cycle of combustion chamber greatly, has reduced research and development cost compared prior art.
Based on the same inventive concept, embodiments of the present invention also provide a gas turbine including a combustor as previously described.
By adopting the design scheme of the head device, the research and development period of the combustion chamber of the gas turbine is greatly shortened, and the research and development cost is reduced.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A combustion chamber head assembly, comprising: the flange with the head fixed connection of the quick-witted casket of combustion chamber, with the head inlet piece, gas collection casket, a plurality of main level fuel spray tube of the coaxial setting of flange to and main level fuel pipe, auxiliary stay pole and class fuel pipe on duty, wherein:
the head air inlet piece comprises a gas mixing cylinder and a plurality of premixed air channel holes which encircle the gas mixing cylinder and are parallel to the axial direction of the gas mixing cylinder, one end of the gas mixing cylinder, which is close to the flange, is provided with an end plate, and the center of the end plate is provided with a first through hole;
the gas collecting box comprises an annular gas collecting cavity and a fixed connecting part which is fixedly connected with one side of the end plate, which is close to the flange; a second through hole and a third through hole which are radially symmetrical are formed in one side, close to the flange, of the annular gas collection cavity; the main-stage fuel spray pipes are fixed on one side, far away from the flange, of the annular gas collection cavity, are communicated with the annular gas collection cavity and extend into the premix gas passage holes;
the main-stage fuel pipe is fixedly penetrated by the flange and the second through hole, the auxiliary supporting rod is fixedly penetrated by the flange and the third through hole, and the duty-stage fuel pipe is fixedly penetrated by the flange and penetrates through the first through hole;
the flange is fixedly installed with the head of the casing through a fastener.
2. The combustion chamber head apparatus as claimed in claim 1, wherein the fixed connection part is an annular fixed connection part provided at an inner circumferential outer side wall of the annular gas collecting chamber, and includes a plurality of fixing holes arranged in a circumferential direction concentric with the annular fixed connection part;
the end plate is provided with first threaded holes which are opposite to the fixed holes in number.
3. The combustion chamber head apparatus of claim 2, wherein the number of the fixing holes is 4 to 12 and is uniformly distributed.
4. The combustion chamber head apparatus of claim 1, wherein the flange has a fourth through hole opposite the second through hole, a fifth through hole opposite the third through hole, and a second threaded hole opposite the first through hole; the main grade fuel pipe, the auxiliary support rod and the on-duty grade fuel pipe are provided with external threads, the main grade fuel pipe penetrates through the fourth through hole and is fixed on the flange through a pair of first nuts positioned on two sides of the fourth through hole, the auxiliary support rod penetrates through the fifth through hole and is fixed on the flange through a pair of second nuts positioned on two sides of the fifth through hole, and the on-duty grade fuel pipe is fixed on the flange through threaded connection with the second threaded holes.
5. The combustor head assembly of claim 1, wherein said plurality of primary fuel nozzles are threadably coupled to one side of said annular plenum.
6. The combustor head assembly of claim 1, wherein said plurality of premix gas passage holes are uniformly distributed and said plurality of primary fuel nozzles are disposed in one-to-one correspondence with said plurality of premix gas passage holes.
7. The combustor head assembly of claim 1, wherein said primary fuel pipe is welded to said second through bore and said secondary support rod is welded to said third through bore.
8. The header assembly of claim 1, wherein the fuel outlets of the primary fuel nozzles are disposed axially of the primary fuel nozzles or the fuel outlets of the primary fuel nozzles are disposed radially of the primary fuel nozzles.
9. A combustion chamber comprising a header assembly as claimed in any one of claims 1 to 8.
10. A gas turbine comprising the combustor of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810875943.7A CN109185923B (en) | 2018-08-03 | 2018-08-03 | Combustion chamber head device, combustion chamber and gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810875943.7A CN109185923B (en) | 2018-08-03 | 2018-08-03 | Combustion chamber head device, combustion chamber and gas turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109185923A CN109185923A (en) | 2019-01-11 |
| CN109185923B true CN109185923B (en) | 2023-09-12 |
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| CN201810875943.7A Active CN109185923B (en) | 2018-08-03 | 2018-08-03 | Combustion chamber head device, combustion chamber and gas turbine |
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