CN108954393A - A kind of advanced standing vortex burning chamber of built-in flow spoiler - Google Patents
A kind of advanced standing vortex burning chamber of built-in flow spoiler Download PDFInfo
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- CN108954393A CN108954393A CN201811154646.XA CN201811154646A CN108954393A CN 108954393 A CN108954393 A CN 108954393A CN 201811154646 A CN201811154646 A CN 201811154646A CN 108954393 A CN108954393 A CN 108954393A
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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
- F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
- F23R3/58—Cyclone or vortex type combustion chambers
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Abstract
The present invention relates to a kind of advanced standing vortex burning chambers of built-in flow spoiler, including the combustion chamber import (1) being arranged along airflow direction, two fair current channels (2) of parallel interval setting, and combustion zone, the combustion zone entrance is connected with fair current channel (2), and front baffle is set and is connected with fair current vias inner walls face by the closing of combustion zone entrance rest part, bluff body (4) are fixedly installed with inside the combustion zone, the bluff body (4) does not contact with combustion zone inner wall, and cavity (5) are formed with front baffle, the front baffle is denoted as cavity front face (3), the upper and lower ends of the cavity front face (3) are provided with flow spoiler, the flow spoiler includes the flow deflector (6) being vertically arranged on cavity front face (3), and it is tiltedly mounted on the spoiler (7) on flow deflector (6).Compared with prior art, the present invention further increases efficiency of combustion, reduces pollutant emission, improves Exit temperature distribution.
Description
Technical field
The present invention relates to a kind of combustion chambers, more particularly, to a kind of advanced standing vortex burning chamber of built-in flow spoiler.
Background technique
With the deep development of energy-saving and emission-reduction, the clean utilization of the energy has become the problem of becoming increasingly conspicuous.China clearly mentions
Out by large-scale gas turbine, integrated gasification combined cycle plants equipment (IGCC) as the advanced efficient electrical power equipment given priority to it
One.
Good combustion chamber should have that simple and compact for structure, ignition performance is good, flameholding, flow resistance loss are small, efficiency of combustion
The high, essential characteristics such as Exit temperature distribution is uniform, exhaust pollution is few, fuel tolerance is wide.
Standing vortex burning chamber (Trapped Vortex Combustor, TVC) is a kind of novel chamber structure, in master
Cavity is set around stream direction of flow, mainstream, which flows through cavity, to play the role of stable flame in intracavitary formation standing vortex.Fuel with
Air injects in cavity in some way, can play the role of reinforcing vortices breakdown.But TVC geometry mechanism and condition for import matching
If improper, it is unfavorable for forming stable double whirlpools.
Advanced standing vortex burning chamber (Advanced Vortex Combustor, AVC) is improved one on the basis of TVC
The kind steady flame combustion chamber of bluff body forms standing vortex by the cavity between bluff body to serve as stable incendiary source, and main advantage has: structure
It is simple and compact, length is short；It is insensitive to high speed incoming flow with preferable combustion stability；Pitot loss is smaller；NO discharge compared with
It is low.But efficiency of combustion is not high.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of built-in flow spoilers
Advanced standing vortex burning chamber.
Presently, there are single cavity standing vortex burning chamber of the built-in flow deflector and spoiler and only advanced standing vortex of built-in flow deflector
Combustion chamber.And flow deflector built in combustion chamber facilitates in cavity to form stable double vortex structure, is conducive to stablize flame and reinforcement
The blending of cavity flue gas and mainstream.Flow deflector combination spoiler helps to further strengthen the blending of combustion gas flue gas.On integrating thus
Structure combustion flows feature is stated, proposes the advanced standing vortex burning chamber for combining built-in flow deflector and spoiler and bluff body, Ke Yijin
One step improves efficiency of combustion, reduces pollutant emission, improves Exit temperature distribution.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of advanced standing vortex burning chamber of built-in flow spoiler, which is characterized in that including along the combustion chamber that airflow direction is arranged
The two fair current channels and combustion zone of import, parallel interval setting, the combustion zone entrance are connected with fair current channel,
And front baffle is set and is connected with fair current vias inner walls face by the closing of combustion zone entrance rest part, the combustion zone inside is solid
Dingan County is equipped with bluff body, and the bluff body is not contacted with combustion zone inner wall, and the bluff body and front baffle form cavity, the front baffle
It is denoted as cavity front face, the upper and lower ends of the cavity front face are provided with flow spoiler, and the flow spoiler includes being vertically arranged
Flow deflector on cavity front face, and the spoiler being tiltedly mounted on flow deflector.
Further, the cross sectional shape of the bluff body is rectangle, triangle or semicircle.
Further, the height ratio of the width of the bluff body and cavity front face is 0.6-0.8.
Further, the height of the width of the bluff body and cavity front face is than preferably 0.7.
Further, the bluff body is at a distance from cavity front face, i.e. the length of cavity, the height ratio with cavity front face
For 0.5-0.7.
Further, the length of the cavity and the height of cavity front face are than preferably 0.6.
Further, the flow deflector is vertically arranged, and a part protrudes into cavity, and another part is higher by the interior of fair current channel
Wall surface.
Further, 1/2 ratio of the flow deflector protrudes into cavity length and cavity front face height is 0.1-
0.4, it is 0.3-0.5 that the flow deflector, which is higher by the length of the inner wall in fair current channel and the height ratio in fair current channel,.
Further, the flow deflector is higher by the length of the inner wall in fair current channel and the height in fair current channel than preferred
It is 0.4.
Further, the flow deflector is at a distance from cavity front face and the length ratio of cavity is 0.2.
Further, the tilt angle of the spoiler and horizontal direction is less than 90 °.
Further, the tilt angle of the spoiler and horizontal direction is preferably 30 °.
Further, the flow deflector is higher by the one end in fair current vias inner walls face and combustion zone inner wall forms outside and leads to
Road, the ratio between the sectional area of projected area and outer passage of the spoiler on outer wing passage are 12-24%.
Further, the fuel that the combustion chamber uses is gaseous fuel.
Further, the gaseous fuel is natural gas, hydrogen, coal fuel gas, coke-stove gas, blast furnace gas and conjunction
At gas.
A part of fuel and air, which enter, forms stable double vortex structure in cavity, be conducive to stablize flame and reinforce combustion gas
Blending；Bluff body rear region forms recirculating zone, and mainstream air-flow blends again with combustion product in cavity, carries out second-time burning, further
Reinforce the blending of combustion gas flue gas, improves efficiency of combustion to realize, reduce pollutant emission, improve Exit temperature distribution.
Combustion chamber of the invention is mounted between gas-turbine compressor and the turbine of gas turbine, comes from gas turbine pressure
Enter combustion chambers burn after the fuel and air premix of contracting machine, the flue gas of formation enters gas turbine turbine.The present invention is specific
Workflow are as follows: the fuel for first coming from compressor mixes with air air-flow and enters combustion chamber by combustion chamber import, flow through into
Mouthful fair current channel, is shunted by flow deflector, and a part enters cavity through flow deflector drainage, forms stable double stay at flow deflector rear
Vortex structure, a part flows through on the outside of flow deflector, then shunts through spoiler, this part is known as mainstream；Combustion product in cavity
Air-flow a part can be flowed along spoiler, be blended with mainstream gas, and mixed airflow will form reflux in bluff body rear region again
Area reinforces blending and carries out second-time burning, forms suitable flue gas by combustor exit and enter gas turbine turbine.
Compared with prior art, a part of fuel and air in combustion chamber of the invention, which enter, forms stable double whirlpools in cavity
Structure is conducive to stablize flame and reinforces gas mixing；Bluff body rear region forms recirculating zone, and burning produces in mainstream air-flow and cavity
Object blends again, carries out second-time burning, further strengthens the blending of combustion gas flue gas, improves efficiency of combustion to realize, reduces pollution
Object discharge improves Exit temperature distribution.
Detailed description of the invention
Fig. 1 is a kind of advanced standing vortex burning chamber structure chart of built-in flow spoiler of the invention；
Fig. 2 is that the advanced trapped vortex combustion indoor air flow of built-in flow spoiler of the invention a kind of flows to schematic diagram.
Shown in figure label:
1, combustion chamber import, 2, fair current channel, 3, cavity front face, 4, bluff body, 5, cavity, 6, flow deflector, 7, spoiler,
8, combustor exit.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
By the way that bluff body is rationally arranged, cavity is constituted with combustion chamber cavity front face, and standing vortex is formed in cavity, thus shape
At standing vortex burning chamber；Then by the way that the structural parameters of flow deflector and spoiler are rationally arranged, so that combustion efficiency reaches best.
A kind of advanced standing vortex burning chamber of built-in flow spoiler, as shown in Figure 1, include along the combustion chamber of airflow direction setting into
The two fair current channels 2 and combustion zone that mouth 1, parallel interval are arranged, combustion zone entrance is connected with fair current channel 2, and sets
It sets front baffle to be connected with 2 inner wall of fair current channel by the closing of combustion zone entrance rest part, combustion zone inside is fixedly mounted
There is bluff body 4, bluff body 4 and front baffle form cavity 5, and bluff body 4 is not contacted with combustion zone inner wall, and front baffle is denoted as cavity front face
3, the upper and lower ends of cavity front face 3 are provided with flow spoiler, and flow spoiler includes the water conservancy diversion being vertically arranged on cavity front face 3
Piece 6, and the spoiler 7 being tiltedly mounted on flow deflector 6.The cross sectional shape of bluff body 4 is rectangle, width and cavity front face
3 height ratio is 0.7.Bluff body 4 is at a distance from cavity front face 3, i.e., the length of cavity 5, the height ratio with cavity front face 3 are
0.6。
Flow deflector 6 is vertically arranged, and a part protrudes into cavity 5, and another part is higher by the inner wall in fair current channel 2, is protruded into
1/2 ratio of the length of cavity 5 and 3 height of cavity front face is 0.2, be higher by the length of the inner wall in fair current channel 2 with it is suitable
The height ratio of circulation road 2 is 0.4.Flow deflector 6 is 0.2 with the length ratio of cavity 5 at a distance from cavity front face 3.Spoiler 7
Tilt angle with horizontal direction is 30 °.Flow deflector 6 is higher by one end of 2 inner wall of fair current channel and combustion zone inner wall is formed
Outer passage, the ratio between the sectional area of projected area and outer passage of spoiler 7 on outer wing passage are 18%.
The combustion chamber is mounted between gas-turbine compressor and the turbine of gas turbine, from gas-turbine compressor
Enter combustion chambers burn after fuel and air premix, the flue gas of formation enters gas turbine turbine.Specific workflow such as Fig. 2
Shown: the fuel for first coming from compressor mixes with air air-flow and enters combustion chamber by combustion chamber import 1, flows through import fair current
Channel 2 is shunted by flow deflector 6, and a part enters cavity 5 through the drainage of flow deflector 6, forms stable double stay at 6 rear of flow deflector
Vortex structure, a part flows through on the outside of flow deflector 6, then shunts through spoiler 7, this part is known as mainstream；Burning in cavity 5 produces
Object air-flow a part can be flowed along spoiler 7, be blended with mainstream gas, mixed airflow will form again in 4 rear region of bluff body
Recirculating zone is reinforced blending and carries out second-time burning, forms suitable flue gas by combustor exit 8 and enters gas turbine turbine.
Embodiment 2
A kind of advanced standing vortex burning chamber of built-in flow spoiler, including along the combustion chamber import 1 that airflow direction is arranged, it is parallel between
Every two fair current channels 2 of setting and combustion zone, combustion zone entrance is connected with fair current channel 2, and be arranged front baffle with
2 inner wall of fair current channel, which is connected, closes combustion zone entrance rest part, is fixedly installed with bluff body 4 inside combustion zone, blunt
Body 4 and front baffle form cavity 5, and bluff body is not contacted with combustion zone inner wall, and front baffle is denoted as cavity front face 3, cavity antetheca
The upper and lower ends in face 3 are provided with flow spoiler, and flow spoiler includes the flow deflector 6, Yi Jiqing being vertically arranged on cavity front face 3
The spoiler 7 being tiltedly mounted on flow deflector 6.The cross sectional shape of bluff body 4 is triangle, the height ratio of width and cavity front face 3
It is 0.6.Bluff body 4 is at a distance from cavity front face 3, i.e., the length of cavity 5, the height ratio with cavity front face 3 are 0.5.
Flow deflector 6 is vertically arranged, and a part protrudes into cavity 5, and another part is higher by the inner wall in fair current channel 2, is protruded into
1/2 ratio of the length of cavity 5 and 3 height of cavity front face is 0.1, be higher by the length of the inner wall in fair current channel 2 with it is suitable
The height ratio of circulation road 2 is 0.3.Flow deflector 6 is 0.2 with the length ratio of cavity 5 at a distance from cavity front face 3.Spoiler 7
With it is horizontally disposed.Flow deflector 6 is higher by one end of 2 inner wall of fair current channel and combustion zone inner wall forms outer passage, spoiler 7
The ratio between sectional area of projected area and outer passage on outer wing passage is 12%.
The combustion chamber is mounted between gas-turbine compressor and the turbine of gas turbine, from gas-turbine compressor
Enter combustion chambers burn after fuel and air premix, the flue gas of formation enters gas turbine turbine.Specific workflow are as follows: first
First the fuel from compressor mixes with air air-flow by combustion chamber import 1 into combustion chamber, flows through import fair current channel 2,
It being shunted by flow deflector 6, a part enters cavity 5 through the drainage of flow deflector 6, stable double vortex structures are formed at 6 rear of flow deflector,
A part flows through on the outside of flow deflector 6, then shunts through spoiler 7, this part is known as mainstream；Combustion product gas stream in cavity 5
A part can be flowed along spoiler 7, be blended with mainstream gas, and mixed airflow will form recirculating zone in 4 rear region of bluff body again,
Reinforce blending and carry out second-time burning, forms suitable flue gas by combustor exit 8 and enter gas turbine turbine.
Embodiment 3
A kind of advanced standing vortex burning chamber of built-in flow spoiler, including along the combustion chamber import 1 that airflow direction is arranged, it is parallel between
Every two fair current channels 2 of setting and combustion zone, combustion zone entrance is connected with fair current channel 2, and be arranged front baffle with
2 inner wall of fair current channel, which is connected, closes combustion zone entrance rest part, is fixedly installed with bluff body 4 inside combustion zone, blunt
Body 4 and front baffle form cavity 5, and bluff body 4 is not contacted with combustion zone inner wall, and front baffle is denoted as cavity front face 3, cavity antetheca
The upper and lower ends in face 3 are provided with flow spoiler, and flow spoiler includes the flow deflector 6, Yi Jiqing being vertically arranged on cavity front face 3
The spoiler 7 being tiltedly mounted on flow deflector 6.The cross sectional shape of bluff body 4 is semicircle, the height ratio of width and cavity front face 3
It is 0.8.Bluff body 4 is at a distance from cavity front face 3, i.e., the length of cavity 5, the height ratio with cavity front face 3 are 0.7.
Flow deflector 6 is vertically arranged, and a part protrudes into cavity 5, and another part is higher by the inner wall in fair current channel 2, is protruded into
1/2 ratio of the length of cavity 5 and 3 height of cavity front face is 0.4, be higher by the length of the inner wall in fair current channel 2 with it is suitable
The height ratio of circulation road 2 is 0.5.Flow deflector 6 is 0.2 with the length ratio of cavity 5 at a distance from cavity front face 3.Spoiler 7
Tilt angle with horizontal direction is 80 °.Flow deflector 6 is higher by one end of 2 inner wall of fair current channel and combustion zone inner wall is formed
Outer passage, the ratio between the sectional area of projected area and outer passage of spoiler 7 on outer wing passage are 24%.
The combustion chamber is mounted between gas-turbine compressor and the turbine of gas turbine, from gas-turbine compressor
Enter combustion chambers burn after fuel and air premix, the flue gas of formation enters gas turbine turbine.Specific workflow are as follows: first
First the fuel from compressor mixes with air air-flow by combustion chamber import 1 into combustion chamber, flows through import fair current channel 2,
It being shunted by flow deflector 6, a part enters cavity 5 through the drainage of flow deflector 6, stable double vortex structures are formed at 6 rear of flow deflector,
A part flows through on the outside of flow deflector 6, then shunts through spoiler 7, this part is known as mainstream；Combustion product gas stream in cavity 5
A part can be flowed along spoiler 7, be blended with mainstream gas, and mixed airflow will form recirculating zone in 4 rear region of bluff body again,
Reinforce blending and carry out second-time burning, forms suitable flue gas by combustor exit 8 and enter gas turbine turbine.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (9)
1. a kind of advanced standing vortex burning chamber of built-in flow spoiler, which is characterized in that including along the combustion chamber that airflow direction is arranged into
Two fair current channels (2) of mouthful (1), parallel interval setting and combustion zone, the combustion zone entrance and fair current channel (2)
It is connected, and front baffle is set and is connected with fair current vias inner walls face by the closing of combustion zone entrance rest part, the burning
It is fixedly installed with inside area bluff body (4), the bluff body (4) does not contact with internal face of combustion chamber, and forms cavity with front baffle
(5), the front baffle is denoted as cavity front face (3), and the upper and lower ends of the cavity front face (3) are provided with flow spoiler, institute
Stating flow spoiler includes the flow deflector (6) being vertically arranged on cavity front face (3), and is tiltedly mounted on flow deflector (6)
Spoiler (7).
2. a kind of advanced standing vortex burning chamber of built-in flow spoiler according to claim 1, which is characterized in that the bluff body
(4) cross sectional shape is rectangle, triangle or semicircle.
3. a kind of advanced standing vortex burning chamber of built-in flow spoiler according to claim 1, which is characterized in that the bluff body
(4) the height ratio of width and cavity front face (3) is 0.6-0.8.
4. a kind of advanced standing vortex burning chamber of built-in flow spoiler according to claim 1, which is characterized in that the bluff body
(4) at a distance from cavity front face (3), i.e., the length of cavity (5), the height ratio with cavity front face (3) are 0.5-0.7.
5. a kind of advanced standing vortex burning chamber of built-in flow spoiler according to claim 1, which is characterized in that the flow deflector
(6) a part protrudes into cavity (5), and another part is higher by the inner wall of fair current channel (2).
6. a kind of advanced standing vortex burning chamber of built-in flow spoiler according to claim 5, which is characterized in that the flow deflector
(6) 1/2 ratio of the length and cavity front face (3) height that protrude into cavity (5) is 0.1-0.4, and the flow deflector is higher by suitable
The length of the inner wall of circulation road (2) and the height ratio of fair current channel (2) are 0.3-0.5.
7. a kind of advanced standing vortex burning chamber of built-in flow spoiler according to claim 1, which is characterized in that the flow deflector
It (6) is 0.2 with the length ratio of cavity (5) at a distance from cavity front face (3).
8. a kind of advanced standing vortex burning chamber of built-in flow spoiler according to claim 1, which is characterized in that the spoiler
(7) with the tilt angle of horizontal direction less than 90 °.
9. a kind of advanced standing vortex burning chamber of built-in flow spoiler according to claim 1, which is characterized in that the flow deflector
(6) one end and combustion zone inner wall for being higher by fair current channel (2) inner wall form outer passage, and the spoiler (7) is on the outside
The ratio between sectional area of projected area and outer passage on channel is 12-24%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811154646.XA CN108954393A (en) | 2018-09-30 | 2018-09-30 | A kind of advanced standing vortex burning chamber of built-in flow spoiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811154646.XA CN108954393A (en) | 2018-09-30 | 2018-09-30 | A kind of advanced standing vortex burning chamber of built-in flow spoiler |
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| CN201811154646.XA Pending CN108954393A (en) | 2018-09-30 | 2018-09-30 | A kind of advanced standing vortex burning chamber of built-in flow spoiler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195863A (en) * | 2019-04-16 | 2019-09-03 | 华中科技大学 | A kind of small diffusion burner that multiple flow passages efficiently preheat |
| CN110195862A (en) * | 2019-04-16 | 2019-09-03 | 华中科技大学 | A kind of small diffusion burner of separate type preheating |
| CN114777158A (en) * | 2022-05-13 | 2022-07-22 | 哈尔滨工程大学 | Combustion chamber mixing structure based on blunt body group |
| CN115127121A (en) * | 2022-06-15 | 2022-09-30 | 北京航空航天大学 | Flame-stabilizing premixed combustion device and aircraft engine simulation test equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195863A (en) * | 2019-04-16 | 2019-09-03 | 华中科技大学 | A kind of small diffusion burner that multiple flow passages efficiently preheat |
| CN110195862A (en) * | 2019-04-16 | 2019-09-03 | 华中科技大学 | A kind of small diffusion burner of separate type preheating |
| CN114777158A (en) * | 2022-05-13 | 2022-07-22 | 哈尔滨工程大学 | Combustion chamber mixing structure based on blunt body group |
| CN115127121A (en) * | 2022-06-15 | 2022-09-30 | 北京航空航天大学 | Flame-stabilizing premixed combustion device and aircraft engine simulation test equipment |
| CN115127121B (en) * | 2022-06-15 | 2024-01-12 | 北京航空航天大学 | Flame stabilizing premixing combustion device and aeroengine simulation test equipment |
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