CN104373964B - The cavity support plate flameholder of built-in beam hanger - Google Patents
The cavity support plate flameholder of built-in beam hanger Download PDFInfo
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- CN104373964B CN104373964B CN201410559548.XA CN201410559548A CN104373964B CN 104373964 B CN104373964 B CN 104373964B CN 201410559548 A CN201410559548 A CN 201410559548A CN 104373964 B CN104373964 B CN 104373964B
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- support plate
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- chamber
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Abstract
The present invention provides a kind of injection system and cavity support plate flame stabilizer integrated design scheme, Fuel Injector Bar is built in cavity support plate internal cavities, so can reduce the component number of after-burner, reduce the flow losses that parts bring, improve the overall performance of after-burner.Simultaneously, built-in Fuel Injector Bar can utilize the cooling air-flow flow through in cavity support plate to carry out pneumatic nebulization, compared with traditional direct-injection type injection mode, its atomizing effect is more preferable, further increases tissue burning capacity and the efficiency of combustion of after-burner of flameholder.
Description
Technical field
The present invention relates to the flame stabilizer of after-burner in the gas-turbine unit of a kind of novel all-in-one, its injection system is built in inside flameholder, it is achieved oil spout and flame stabilization integrated design.
Background technology
After-burner is one of requisite parts of modern military electromotor, by combustion gas after turbine is sprayed into fuel oil again, oxygen remaining in combustion gas after turbine is organized burning further, the thrust of electromotor can be greatly improved at short notice.But, the combustion gas speed of turbine outlet is very fast, therefore typically by arranging circumference and radially bluff body flameholder in after-burner, utilizes high velocity air to walk around the recirculating zone of bluff body structure formation and burn to stablize flame and tissue.But, the program has obvious shortcoming, and when electromotor does not operates at Afterburning condition, the bluff body flameholder of afterbunring indoor does not plays a role, and increases flow losses and the weight of electromotor.It addition, the Fuel Injector Bar in conventional force combustor is directly exposed to during high temperature flows, Fuel Injector Bar the most at high temperature occurs to tie carbon gum deposit, affect engine work, meanwhile, injection system is separate with flameholder, which increases the difficulty in parts I&M.
In order to solve the negative effect that electromotor is caused by conventional force combustion chamber scheme, a kind of scheme (Chinese Patent Application No.: 201010135627.X) by turbine rear carrier plate Yu flameholder integrated design is proposed, the program changes traditional streamlined turbine rear carrier plate the trailing edge sudden expansion shape of band cavity into, make turbine rear carrier plate hold a concurrent post the function of flameholder simultaneously, thus eliminate traditional bluff body flameholder.But, program Flame regulator is the most separate with injection system, limits the performance of cavity support plate flameholder.
Summary of the invention
In order to overcome the above-mentioned technical deficiency of prior art, injection system, on the premise of the shape of inconspicuous change cavity support plate, is built in cavity and props up intralaminar part by the present invention, it is achieved injection system and the integrated design of cavity support plate.Utilize the cooling air flowing of an intralaminar part simultaneously, improve the atomization and vaporization effect of fuel oil, thus improve the service behaviour of flameholder.Take into account simple in construction, it is easy to safeguard simultaneously.
In technical scheme according to an aspect of the present invention, two cavitys of cavity support plate indoor design, filling fuel feeding Fuel Injector Bar is installed in ante-chamber, back cavity is used for introducing cooling air, connects with two circular channels between two cavitys.Fuel feeding Fuel Injector Bar on duty is arranged in the cavity that front apron and support plate surround.
According to an aspect of the present invention, after cooling air-flow entrance cavity props up intralaminar part, first flow in support plate back cavity, support plate afterbody is cooled down；Support plate ante-chamber is entered afterwards from two circular interface channels, after part cooling air mixes with the fuel oil sprayed in four nozzle openings on filling fuel feeding Fuel Injector Bar, the nozzle opening ejection of 4 strips from cavity support plate both sides, forms the effect of similar pneumatic nozzle；Remaining cooling air, from the cavity that 12 small circular gas ports entrance front aprons of cavity support plate head and cavity support plate surround, carries out mixing and atomization and vaporization with the fuel oil of ejection in three nozzle openings on fuel feeding Fuel Injector Bar on duty in the cavities.Fuel mixture flows out support plate from the battlement shape slot of front apron both sides, and the cavity at support plate organizes burning at trailing edge.
According to an aspect of the invention, it is provided the cavity support plate flameholder of a kind of built-in beam hanger, it is characterised in that including:
Cavity support plate；
The front apron of one and half strips, it welds together with cavity support plate；
The cavity that front apron surrounds with cavity support plate；
It is arranged on cavity and props up back cavity and the ante-chamber of intralaminar part；
The filling fuel feeding Fuel Injector Bar being arranged in ante-chamber；
Fuel feeding Fuel Injector Bar on duty in the cavities is set；
It is connected by two circular interface channels between back cavity and ante-chamber.
The invention have the advantages that
The present invention utilizes cooling air to cool down support plate is latter half of, thus reduces the wall surface temperature on support plate surface, reduces infra-red radiation, improves the Stealth Fighter of electromotor.
The injection system of the present invention is built in cavity and props up intralaminar part, Fuel Injector Bar and cavity support plate integrated design, decreases the number of parts being directly exposed in electromotor runner, thus simplifies the structure of after-burner, reduces flow losses.
In the present invention, the fuel oil of Fuel Injector Bar ejection make use of cooling air to carry out assisted atomization, the direct-injection type oil spout used compared to traditional after-burner, and the fuel atomization effect of the present invention is more preferable, and the efficiency of combustion of fuel oil is higher.
Present configuration is simple, takes full advantage of the inner space of cavity support plate, reasonably transforms cavity support plate, in the case of realizing design object, does not has the excessive flow losses increasing cavity support plate and blocked area.
Accompanying drawing explanation
Fig. 1 is the profile of the support plate flameholder of band cavity
Fig. 2 is the profile of the cavity support plate flameholder of built-in beam hanger
Fig. 3 is that the cavity support plate flameholder internal cooling air flow of built-in beam hanger moves schematic diagram
Reference:
1 is cavity support plate flameholder, and 2 is hollow cavity support plate, and 3 is back cavity, 4 is circular interface channel, and 5 is ante-chamber, and 6 is filling fuel feeding Fuel Injector Bar, 7 is nozzle opening, and 8 is small circular gas port, and 9 is front apron, 10 is fuel feeding Fuel Injector Bar on duty, and 11 is battlement groove part groove, and 12 is filling fuel feeding Fuel Injector Bar nozzle opening, 13 is fuel feeding Fuel Injector Bar nozzle opening on duty, 14 is cavity, and 15 is cooling air, and 16 is that after-burner is to flow combustion gas
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention is discussed in detail the present invention.
According to one embodiment of present invention, cavity support plate flameholder 1 (see Fig. 1) for proposing in Chinese patent application 201010135627.X carries out improvement and design, eliminate the head construction of cavity support plate flameholder originally, the substitute is scheme as shown in Figure 2, including the front apron 9 of one and half strips, front apron 9 welds together with cavity support plate 2.Meanwhile, by solid two cavitys of cavity support plate indoor design originally, i.e. back cavity 3 and ante-chamber 5, it is connected by two circular interface channels 4 (illustrate only one of them in Fig. 2) between two cavitys.
In the injection system according to the present invention and cavity support plate integrated design, fuel feeding Fuel Injector Bar 10 on duty is placed in the cavity 14 that front apron 9 and cavity support plate 2 surround, filling fuel feeding Fuel Injector Bar 6 is placed in the ante-chamber 5 within cavity support plate 2.
Fig. 3 illustrates the situation that during work of cavity support plate flameholder, internal cooling air flow is dynamic.Wherein cooling air 15 is after back cavity 3 enters support plate 2 inside, first flows in back cavity 3, cools down, enter ante-chamber 5 from two circular interface channels 4 afterwards at the trailing edge to support plate 2.Cooling air is in ante-chamber 5, part cooling air is along with the fuel oil of ejection in four nozzle openings 12 on filling fuel feeding Fuel Injector Bar 6, flow out from the nozzle opening 7 of both sides, cavity support plate surface, play the effect of similar pneumatic nozzle, remaining cooling air enters the cavity 14 that front apron 9 and cavity support plate 2 surround from the small circular gas port 8 of prelaminar part, and carry out mixing and being atomized with the fuel oil of ejection in three nozzle openings 13 on fuel feeding Fuel Injector Bar 10 on duty in this cavity 14, mixed fuel-steam flows out support plate from the battlement groove part groove 11 of head both sides.The fuel mixture flowed out from battlement groove part groove 11 and nozzle opening 7, along with after-burner flows combustion gas 16 flow further downstream, finally tissue burning at cavity and support plate trailing edge.
The invention have the advantages that
The present invention utilizes cooling air to cool down support plate is latter half of, thus reduces the wall surface temperature on support plate surface, reduces infra-red radiation, improves the Stealth Fighter of electromotor.
The injection system of the present invention is built in cavity and props up intralaminar part, Fuel Injector Bar and cavity support plate integrated design, decreases the number of parts being directly exposed in electromotor runner, thus simplifies the structure of after-burner, reduces flow losses.
In the present invention, the fuel oil of Fuel Injector Bar ejection make use of cooling air to carry out assisted atomization, the direct-injection type oil spout used compared to traditional after-burner, and the fuel atomization effect of the present invention is more preferable, and the efficiency of combustion of fuel oil is higher.
Present configuration is simple, takes full advantage of the inner space of cavity support plate, reasonably transforms cavity support plate, in the case of realizing design object, does not has the excessive flow losses increasing cavity support plate and blocked area.
Should be understood that, in described above and explanation, the description that carried out the present invention only illustrates rather than determinate, and on the premise of the present invention limited without departing from such as appended claims, above-described embodiment can be carried out various change, deformation and/or revise.
Claims (4)
1. put the cavity support plate flameholder of beam hanger, it is characterised in that including:
Cavity support plate (2)；
The front apron (9) of one and half strips, it welds together with cavity support plate (2)；
The cavity (14) that front apron (9) and cavity support plate (2) surround；
It is arranged on the internal back cavity (3) of cavity support plate (2) and ante-chamber (5)；
Filling fuel feeding Fuel Injector Bar (6) being arranged in ante-chamber (5)；
The fuel feeding Fuel Injector Bar (10) on duty being arranged in cavity (14)；
It is connected by two circular interface channels (4) between back cavity (3) and ante-chamber (5).
2. according to the cavity support plate flameholder putting beam hanger described in right 1, it is characterised in that:
Front apron (9) edge is provided with two rows' battlement shape slot (11),
The nozzle opening (7) of 2 strips, totally 4 nozzle openings (7) it is respectively provided with at the both sides of ante-chamber (5),
Back cavity (3) is used for introducing cooling air (15),
Small circular gas port (8) it is provided with at ante-chamber (5) head.
3. according to the cavity support plate flameholder of the built-in beam hanger described in right 2, it is characterised in that:
Filling fuel feeding Fuel Injector Bar (6) respectively has two nozzle openings (12), totally 4 nozzle openings in both sides, and these are 4 years old
The position of individual nozzle opening faces the nozzle opening (7) of 4 strips on support plate ante-chamber, its oil spout side respectively
To flowing with after-burner, (16) direction is vertical.
4. according to the cavity support plate flameholder of the built-in beam hanger described in right 3, it is characterised in that
The side of fuel feeding Fuel Injector Bar (10) on duty has 3 nozzle openings (13),
12 small circular gas ports (8) it are provided with at ante-chamber (5) head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410559548.XA CN104373964B (en) | 2014-10-20 | 2014-10-20 | The cavity support plate flameholder of built-in beam hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410559548.XA CN104373964B (en) | 2014-10-20 | 2014-10-20 | The cavity support plate flameholder of built-in beam hanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104373964A CN104373964A (en) | 2015-02-25 |
| CN104373964B true CN104373964B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410559548.XA Expired - Fee Related CN104373964B (en) | 2014-10-20 | 2014-10-20 | The cavity support plate flameholder of built-in beam hanger |
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| CN (1) | CN104373964B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776448B (en) * | 2015-03-11 | 2017-01-18 | 北京航空航天大学 | Multifunctional mode adjustable flame stabilizing supporting plate |
| CN105402769B (en) * | 2015-11-30 | 2019-04-02 | 南京航空航天大学 | A kind of flameholder with boss turbulence structure |
| CN105546579A (en) * | 2015-12-25 | 2016-05-04 | 中国航空工业集团公司沈阳发动机设计研究所 | Fuel-oil spray nozzle |
| CN106642201B (en) * | 2016-12-23 | 2019-07-09 | 中航空天发动机研究院有限公司 | Flame stabilizer for aircraft engine combustion chamber |
| CN106765310B (en) * | 2016-12-23 | 2019-02-12 | 中航空天发动机研究院有限公司 | The flameholder with pre-blended chamber for engine chamber |
| CN106642200B (en) * | 2016-12-23 | 2019-02-12 | 中航空天发动机研究院有限公司 | A kind of cavity supporting plate flameholder of standing vortex formula |
| CN106642202B (en) * | 2016-12-23 | 2019-02-12 | 中航空天发动机研究院有限公司 | A kind of flame stabilizer for the Asia TBCC burning ramjet combustion chamber |
| CN113606609B (en) * | 2021-07-19 | 2022-10-11 | 南京航空航天大学 | Combined stabilizer based on center step ignition and working method thereof |
| CN117109029B (en) * | 2023-08-25 | 2024-02-02 | 西南科技大学 | Blunt body flame stabilizer and aeroengine combustion assembly |
| CN117212836B (en) * | 2023-10-26 | 2024-06-07 | 融通航空发动机科技有限公司 | Supersonic aircraft and independent oil supply combined flame stabilizer |
| CN117570472A (en) * | 2023-11-30 | 2024-02-20 | 清华大学 | Flame stabilizer, combustion chamber and flame stabilizing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1592655A1 (en) * | 1988-05-12 | 1990-09-15 | Ki Polt I | Flame stabilizer |
| CN1538047A (en) * | 2003-03-13 | 2004-10-20 | ���չ�˾ | Augmentor |
| EP1619377A1 (en) * | 2004-07-23 | 2006-01-25 | Snecma | Turbomachine with a protective screen for the fuel manifold of an annular burner |
| CN102200292A (en) * | 2010-03-26 | 2011-09-28 | 北京航空航天大学 | Flame stabilizing device and method for supporting plate with cavities |
| CN102538010A (en) * | 2012-02-12 | 2012-07-04 | 北京航空航天大学 | Afterburner integrated with stabilizer and worm wheel rear rectification support plate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2928202A1 (en) * | 2008-02-29 | 2009-09-04 | Snecma Sa | FLAME HOOK FOR HEATER CHANNEL OF A TURBOJET ENGINE WITH A DISCHARGE SOLE, HEATING CHANNEL AND TURBOJET COMPRISING A HEATING CHANNEL. |
-
2014
- 2014-10-20 CN CN201410559548.XA patent/CN104373964B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1592655A1 (en) * | 1988-05-12 | 1990-09-15 | Ki Polt I | Flame stabilizer |
| CN1538047A (en) * | 2003-03-13 | 2004-10-20 | ���չ�˾ | Augmentor |
| EP1619377A1 (en) * | 2004-07-23 | 2006-01-25 | Snecma | Turbomachine with a protective screen for the fuel manifold of an annular burner |
| CN102200292A (en) * | 2010-03-26 | 2011-09-28 | 北京航空航天大学 | Flame stabilizing device and method for supporting plate with cavities |
| CN102538010A (en) * | 2012-02-12 | 2012-07-04 | 北京航空航天大学 | Afterburner integrated with stabilizer and worm wheel rear rectification support plate |
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| Publication number | Publication date |
|---|---|
| CN104373964A (en) | 2015-02-25 |
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Granted publication date: 20160817 Termination date: 20171020 |