CN204717746U - The head of combustion chamber structure of distributed flame - Google Patents
The head of combustion chamber structure of distributed flame Download PDFInfo
- Publication number
- CN204717746U CN204717746U CN201420750562.3U CN201420750562U CN204717746U CN 204717746 U CN204717746 U CN 204717746U CN 201420750562 U CN201420750562 U CN 201420750562U CN 204717746 U CN204717746 U CN 204717746U
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- combustion chamber
- center
- fuel pipe
- duty
- wall
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Abstract
The utility model relates to gas-turbine combustion chamber technical field, disclose a kind of head of combustion chamber structure of distributed flame, comprise: main burner and center nozzle on duty, outer wall of combustion chamber and burning end plate, described main burner comprises multiple main fuel pipe, and described burning end plate is fixed on the rear end of described outer wall of combustion chamber; Described center nozzle on duty is arranged on the center of described burning end plate; Multiple main fuel pipe, through described burning end plate, stretches in described outer wall of combustion chamber, and is arranged in the outer periphery of described center nozzle on duty; The part that described main fuel pipe stretches into described outer wall of combustion chamber is provided with at least one radial fuel pipe, and described radial fuel pipe is positioned at the upstream of described center spray nozzle front end on duty; Each described radial fuel pipe is provided with main fuel spray orifice; Described burning end plate is provided with multiple primary air import.The utility model sets up " distributed " flame, avoids the shortcoming that Thermal release is uneven brought, and is conducive to the speed suppressing NO_x formation.
Description
Technical field
The utility model relates to gas-turbine combustion chamber technical field, particularly relates to a kind of head of combustion chamber structure of distributed flame.
Background technology
Combustion chamber is one of large core component of industry gas turbine three, and whether its pollutant directly determining gas turbine meets the mandatory requirement of environmental regulation.Industrial heavy gas-turbine combustion chamber has multiple burning tissues form, and its core is fuel and air Thorough combustion in the appropriate way under many limiting factors.Limiting factor described here mainly comprises the vibration etc. by the pressure drop of combustion chamber, combustion chamber tube wall temperature, combustor exit temperature distribution and combustion chamber.With regard to the main flow combustion chamber-ring-pipe type combustion chamber in modern industry heavy duty gas turbine, burning occurs in that a diameter is about 400mm, length is about in the endless tube of 1m substantially, the outlet mean temperature of combustion chamber at 1400 ~ 1600 DEG C, far above the Long-term service temperature (about 1000 DEG C) of high temperature alloy; Under this kind of environment, under the prerequisite ensureing cooling, pursue the CO being less than 10ppm
x, NO
xdischarge is the Destination and task of combustion chamber research and development.In the different phase of industry gas turbine combustion chamber development, different combustion technology becomes the representative of different times respectively; Its basic trend, for be developed to multiinjector from single injector, is developed to poor premixed combustion from diffusion combustion.In prior art, no matter adopt single injector or multiinjector, premixed combustion or diffusion combustion, it has common characteristic is all that combustion chamber exists one or more flame front, and heat is concentrated and discharged from flame front.Cause each position thermal release of combustion chamber uneven, therefore there is following problem:
(1) the uneven process of Thermal release brings hot spot to change the impact cooled burner inner liner, and combustion chamber Cooling Design needs to consider that all hot spots occur that the cooling of position is arranged, increases the consumption of cooling, is unfavorable for that combustion chamber grade improves;
(2) Thermal release is uneven causes localized heat release to be concentrated, and produces thermal acoustic oscillation.
Utility model content
(1) technical problem that will solve
The purpose of this utility model is to provide a kind of head of combustion chamber structure of distributed flame, sets up " distributed " flame, avoids the shortcoming that Thermal release is uneven brought, and is conducive to the speed suppressing NO_x formation.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of head of combustion chamber structure of distributed flame, comprise: main burner, center nozzle on duty, outer wall of combustion chamber and burning end plate, described main burner comprises multiple main fuel pipe, and described burning end plate is fixed on the rear end of described outer wall of combustion chamber; Described center nozzle on duty is arranged on the center of described burning end plate; Multiple main fuel pipe, through described burning end plate, stretches in described outer wall of combustion chamber, and is arranged in the outer periphery of described center nozzle on duty; The part that described main fuel pipe stretches into described outer wall of combustion chamber is provided with at least one radial fuel pipe, and described radial fuel pipe is positioned at the upstream of described center spray nozzle front end on duty; Each described radial fuel pipe is provided with main fuel spray orifice; Described burning end plate is provided with multiple primary air import.
Wherein, described center nozzle on duty comprises central nozzle outer wall, center fuel pipe and multiple swirl vane; Described center fuel pipe is arranged on the center of described burning end plate; Described central nozzle outer wall is arranged on outside center fuel pipe, and multiple described swirl vane is arranged on described center fuel pipe; Described swirl vane is provided with multiple Swirl spray orifice, and described Swirl spray orifice is communicated with described center fuel pipe.
Wherein, the aperture of described main fuel spray orifice is 5 ~ 10mm.
Wherein, the axial distance of described radial fuel Guan Yu center spray nozzle front end on duty is 100 ~ 200mm.
Wherein, the radial fuel pipe on each described main fuel pipe is two.
Wherein, the circumference of multiple described swirl vane centrally cartridge is evenly distributed.
Wherein, described swirl vane is fixed between the outer wall of center fuel pipe and the inwall of central nozzle outer wall.
Wherein, described main fuel pipe is evenly arranged in around the nozzle on duty of described center.
Wherein, the described main fuel spray orifice on each described radial fuel pipe is multiple.
(3) beneficial effect
The head of combustion chamber structure of the distributed flame that the utility model provides, by the center nozzle on duty that arranges axial distribution and main burner, set up " distributed " flame, avoid the shortcoming that Thermal release is uneven brought, the impact that the hot spot change that minimizing brings because of the uneven process of Thermal release cools burner inner liner, reduces the consumption of cold gas.When improving combustion chamber grade, because this combustion method Thermal release is comparatively even, the generation of thermal acoustic oscillation effectively can be suppressed.Meanwhile, more air participates in burning, and burning is comparatively abundant, is conducive to the speed suppressing NO_x formation.In addition, " distributed " flame chemistry response feature time scale is close with turbulent closure scheme time scale, and elementary reaction chemical paths changes, and is also conducive to suppressing NO_x formation speed.This head construction may be combined with into multiple hierarchical approaches, has fuel accommodation widely.
Accompanying drawing explanation
Fig. 1 is the sectional view of the utility model embodiment 1;
Fig. 2 is the sectional view of the utility model embodiment 2.
In figure, 10: center nozzle on duty; 11: main burner; 101: central nozzle outer wall; 102: center fuel pipe; 103: swirl vane; 104: centre-to-centre method is blue; 105: front end-plate; 106: separation baffles; 107: center air pipe; 108: little fuel conductor; 1031: Swirl spray orifice; 1041: the first center fuel passages; 1042: the second center fuel passages; 1043: central air passage; 1051: front end fuel jet orifice; 1052: front end air spray orifice; 110: outer wall of combustion chamber; 111: primary air import; 112: main fuel pipe; 113: radial fuel pipe; 114: main fuel spray orifice; 115: burning end plate.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.Following instance for illustration of the utility model, but is not used for limiting scope of the present utility model.
In description of the present utility model, it should be noted that, one end of term " front end " finger portion structural fuel outlet; One end of " rear end " finger portion structural fuel import.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
Embodiment 1:
With reference to shown in Fig. 1, the head of combustion chamber structure of distributed flame of the present utility model, comprising: main burner 11, center nozzle 10 on duty, outer wall of combustion chamber 110 and burning end plate 115, main burner 11 comprises multiple main fuel pipe 112.Burning end plate 115 is fixed on the rear end of outer wall of combustion chamber 110, and it is uncovered cylindrical structure that outer wall of combustion chamber 110 and burning end plate 115 form a front end.Center nozzle 10 on duty is arranged on the center of burning end plate 115.One end of multiple main fuel pipe 112 is all connected with the fuel gas through hole on fuel end plate 115, the other end is all through burning end plate 115, stretch in outer wall of combustion chamber 110, and the outer periphery of the center that is arranged in equably nozzle 10 on duty, the part that each main fuel pipe 112 stretches into outer wall of combustion chamber 110 is provided with a radial fuel pipe 113, and radial fuel pipe 113 is positioned at the upstream of nozzle 10 on duty front end, center.Radial fuel pipe 113 extends along the radial direction of outer wall of combustion chamber 110, and each radial fuel pipe 113 is provided with main fuel spray orifice 114, and the number of main fuel spray orifice 114 is one or more.Multiple main fuel spray orifice 114 radially the axially even of cartridge 113 is arranged.Burning end plate 115 is provided with multiple primary air import 111, for passing into air at a high speed.
During use, the speed of primary air import 111 remains between 0.5 ~ 0.8Ma, ensure that the speed of air flowing is much larger than turbulent flame spread speed, make fuel-air advance into primary zone what meet chemical reaction condition, and then guarantee can not to burn in the dilution zone of nozzle 10 on duty upstream, center.Center nozzle 10 on duty adopts radial grading mode, and when combining with main burner 11, adopt axially staged mode, the classification of main burner 11 can be realized further by the flow of change different fuel jet pipe simultaneously, there is multiple hierarchical approaches flexibly, can for different application situation, the mode of operation of change combustion chamber, whole combustion chamber is made to have fuel tolerance and more stable working range widely, and main burner 11 adopts high-speed jet, fuel nozzle 112 is made to spray fuel before lighting, blending is completed with high-speed jet air, flammable mixture is formed in certain area space, the premixed flame of Swirl provides heat to maintain the least energy required for igniting for the space that this is full of flammable mixture, the overall flame of final formation, traditional flame face is converted into distributed flame, thus avoid because problem is swung in uneven the brought cooling problem of the Thermal release in traditional flame face and hot acoustic shock, the chemical reaction characteristic time scale of distributed flame is close with turbulent closure scheme time scale simultaneously, elementary reaction chemical paths changes, be conducive to the speed suppressing NO_x formation, decreasing pollution thing discharges.
Wherein, center nozzle on duty 10 comprises central nozzle outer wall 101, center fuel pipe 102 and multiple swirl vane 103.The two ends of central nozzle outer wall 101 are penetrating, center fuel pipe 102 is fixed on the center of burning end plate 115, central nozzle outer wall 101 is arranged on the outside of center fuel pipe 102, with center fuel pipe 102 arranged concentric, make central nozzle outer wall 101 be fixed on the center of burning end plate 115, be provided with a through hole in the centre of burning end plate 115, pass for central nozzle outer wall 101, and be fixed together, in manufacture process, can adopt to be integrally formed and make.Multiple swirl vane 103 is arranged on center fuel pipe 102; Swirl vane 103 is provided with multiple Swirl spray orifice 1031, and Swirl spray orifice 1031 is communicated with center fuel pipe 102.Swirl spray orifice 1031 is evenly distributed along swirl vane 103 radial direction.Combustion gas, by after center fuel pipe, is sprayed by Swirl spray orifice 1031, forms the combustion gas of swirl injection, mixes with air, forms swirl flame.
Further, in the present embodiment, the front end of center fuel pipe 102 is provided with front end-plate 105, and the rear end of center fuel pipe 102 is provided with a centre-to-centre method orchid 104.Also be provided with separation baffles 106 in center fuel pipe 102, center fuel pipe 102 is divided into front chamber and rear chamber by separation baffles 106.Centre-to-centre method orchid 104 is provided with the first center fuel path 10 41, second center fuel path 10 42 and central air passage 1043; First center fuel path 10 41 is communicated with rear chamber; Central air passage 1043 is communicated with front chamber by center air pipe 107; Front end-plate 105 is provided with front end fuel jet orifice 1051 and front end air spray orifice 1052; Front end fuel jet orifice 1051 is communicated with the second center fuel path 10 42 by little fuel conductor 108.Multiple swirl vane 103 is arranged on center fuel pipe 102; Swirl vane 103 is provided with multiple Swirl spray orifice 1031, and Swirl spray orifice 1031 is communicated with rear chamber.Center nozzle 10 on duty bears combustion chamber 5 ~ 15% load, and average equivalent ratio is 0.5 ~ 0.8, guarantees that Swirl flame accounts for the fraction of whole distributed flame, plays igniting and steady flame effect, reduces the pollutant emission problem brought by swirl flame as far as possible.
On the nozzle 10 on duty of center, there is central-injection and swirl injection, the fuel of central-injection enters little fuel conductor 108 from the second center fuel path 10 42, and spray from front end fuel jet orifice 1051, the air of central-injection enters center air pipe 107 by central air passage 1043, and enter front chamber, then spray from the front end air spray orifice 1052 of front end-plate 105, mix with the fuel sprayed from front end fuel jet orifice 1051.The fuel of swirl injection enters rear chamber from the first center fuel path 10 41, then sprays from Swirl spray orifice 1031, mixes with the air entered from center outer nozzle wall 101 rear end.
Preferably, the circumference of swirl vane 103 centrally cartridge 102 is evenly distributed, and is positioned on the same radial section of center fuel pipe 102.Swirl vane 103 is fixed between the inwall of center fuel pipe 102 outer wall and central nozzle outer wall 101.
Further, the aperture of main fuel spray orifice 114 is 5 ~ 10mm.Guarantee that the speed fuel that fuel jet orifice sprays is unlikely to too high, affect mixing effect.
Further, radial fuel pipe 113 is positioned at the upstream of nozzle 10 on duty front end, center, and the axial distance of nozzle 10 on duty front end, radial fuel Guan113Yu center is 100 ~ 200mm.The fuel of high velocity jet and high-speed air carry out blending in this segment distance, ensure suitable Mixed length.
Embodiment 2:
The present embodiment is substantially the same manner as Example 1, and institute's difference is: with reference to shown in Fig. 2, in the present embodiment, the radial fuel pipe 113 on each main fuel pipe 112 is two, and two radial fuel pipes 113 are positioned on same radial section.In addition, radial fuel pipe 113 also can adopt more than 3.
The course of work of the present utility model is as follows: partial air fuel enters center nozzle 10 on duty, formation center diffusion flame and center premixed flame, for main burner fuel air mixture provides ignition energy, partial air enters outer wall of combustion chamber 110 at a high speed from primary air import 111, form high-speed jet air, part of fuel enters main fuel pipe 112 from end cap, and spray from the main fuel spray orifice 114 of radial fuel pipe 113, high-speed jet mixture is mixed to form with high-speed jet air, at center, nozzle 10 downstream on duty is lighted by center diffusion flame and center premixed flame, form combustion chamber overall distribution formula flame.
The utility model is by arranging center nozzle on duty and main burner, set up " distributed " flame, avoid the shortcoming that Thermal release is uneven brought, the impact that the hot spot change that minimizing brings because of the uneven process of Thermal release cools burner inner liner, reduce the consumption of cold gas, improve combustion chamber grade, Thermal release is comparatively even, suppresses the generation of thermal acoustic oscillation.Meanwhile, more air participates in burning, and burning is comparatively abundant, is conducive to the speed suppressing NO_x formation.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. the head of combustion chamber structure of a distributed flame, it is characterized in that, comprise: main burner, center nozzle on duty, outer wall of combustion chamber and burning end plate, described main burner comprises multiple main fuel pipe, and described burning end plate is fixed on the rear end of described outer wall of combustion chamber; Described center nozzle on duty is arranged on the center of described burning end plate; Multiple main fuel pipe, through described burning end plate, stretches in described outer wall of combustion chamber, and is arranged in the outer periphery of described center nozzle on duty; The part that described main fuel pipe stretches into described outer wall of combustion chamber is provided with at least one radial fuel pipe, and described radial fuel pipe is positioned at the upstream of described center spray nozzle front end on duty; Each described radial fuel pipe is provided with main fuel spray orifice; Described burning end plate is provided with multiple primary air import.
2. the head of combustion chamber structure of distributed flame as claimed in claim 1, is characterized in that, described center nozzle on duty comprises central nozzle outer wall, center fuel pipe and multiple swirl vane; Described center fuel pipe is arranged on the center of described burning end plate; Described central nozzle outer wall is arranged on outside center fuel pipe, and multiple described swirl vane is arranged on described center fuel pipe; Described swirl vane is provided with multiple Swirl spray orifice, and described Swirl spray orifice is communicated with described center fuel pipe.
3. the head of combustion chamber structure of distributed flame as claimed in claim 1 or 2, is characterized in that, the aperture of described main fuel spray orifice is 5 ~ 10mm.
4. the head of combustion chamber structure of distributed flame as claimed in claim 1 or 2, is characterized in that, the axial distance of described radial fuel Guan Yu center spray nozzle front end on duty is 100 ~ 200mm.
5. the head of combustion chamber structure of distributed flame as claimed in claim 1 or 2, is characterized in that, the radial fuel pipe on each described main fuel pipe is two.
6. the head of combustion chamber structure of distributed flame as claimed in claim 2, is characterized in that, the circumference of multiple described swirl vane centrally cartridge is evenly distributed.
7. the head of combustion chamber structure of distributed flame as claimed in claim 6, is characterized in that, described swirl vane is fixed between the outer wall of center fuel pipe and the inwall of central nozzle outer wall.
8. the head of combustion chamber structure of distributed flame as claimed in claim 1 or 2, is characterized in that, described main fuel pipe is evenly arranged in around the nozzle on duty of described center.
9. the head of combustion chamber structure of distributed flame as claimed in claim 1 or 2, is characterized in that, the described main fuel spray orifice on each described radial fuel pipe is multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420750562.3U CN204717746U (en) | 2014-12-03 | 2014-12-03 | The head of combustion chamber structure of distributed flame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420750562.3U CN204717746U (en) | 2014-12-03 | 2014-12-03 | The head of combustion chamber structure of distributed flame |
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| Publication Number | Publication Date |
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| CN204717746U true CN204717746U (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420750562.3U Withdrawn - After Issue CN204717746U (en) | 2014-12-03 | 2014-12-03 | The head of combustion chamber structure of distributed flame |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566470A (en) * | 2014-12-03 | 2015-04-29 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Distributed-flame combustion chamber head structure |
| CN109099461A (en) * | 2018-08-03 | 2018-12-28 | 新奥能源动力科技（上海）有限公司 | Head device, combustion chamber and the gas turbine of combustion chamber |
| CN109185924A (en) * | 2018-08-03 | 2019-01-11 | 新奥能源动力科技（上海）有限公司 | Head device, combustion chamber and the gas turbine of combustion chamber |
| CN109185923A (en) * | 2018-08-03 | 2019-01-11 | 新奥能源动力科技（上海）有限公司 | A kind of chamber head part device, combustion chamber and gas turbine |
| CN113483324B (en) * | 2021-07-16 | 2022-12-20 | 中国科学院上海高等研究院 | Tail gas burner |
-
2014
- 2014-12-03 CN CN201420750562.3U patent/CN204717746U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566470A (en) * | 2014-12-03 | 2015-04-29 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Distributed-flame combustion chamber head structure |
| CN104566470B (en) * | 2014-12-03 | 2018-04-10 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | The head of combustion chamber structure of distributed flame |
| CN109099461A (en) * | 2018-08-03 | 2018-12-28 | 新奥能源动力科技（上海）有限公司 | Head device, combustion chamber and the gas turbine of combustion chamber |
| CN109185924A (en) * | 2018-08-03 | 2019-01-11 | 新奥能源动力科技（上海）有限公司 | Head device, combustion chamber and the gas turbine of combustion chamber |
| CN109185923A (en) * | 2018-08-03 | 2019-01-11 | 新奥能源动力科技（上海）有限公司 | A kind of chamber head part device, combustion chamber and gas turbine |
| CN109099461B (en) * | 2018-08-03 | 2023-08-15 | 新奥能源动力科技（上海）有限公司 | Combustion chamber head device, combustion chamber and gas turbine |
| CN109185923B (en) * | 2018-08-03 | 2023-09-12 | 新奥能源动力科技（上海）有限公司 | Combustion chamber head device, combustion chamber and gas turbine |
| CN109185924B (en) * | 2018-08-03 | 2023-09-12 | 新奥能源动力科技（上海）有限公司 | Combustion chamber head device, combustion chamber and gas turbine |
| CN113483324B (en) * | 2021-07-16 | 2022-12-20 | 中国科学院上海高等研究院 | Tail gas burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Distributed-flame combustion chamber head structure Effective date of registration: 20161104 Granted publication date: 20151021 Pledgee: Tsinghua Holdings Co., Ltd. Pledgor: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. Registration number: 2016990000853 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151021 Effective date of abandoning: 20180410 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20151021 Effective date of abandoning: 20180410 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191211 Granted publication date: 20151021 Pledgee: Tsinghua Holdings Co., Ltd. Pledgor: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. Registration number: 2016990000853 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |