CN109915858A - A kind of supporting plate flameholder premixed with standing vortex curved cavity - Google Patents
A kind of supporting plate flameholder premixed with standing vortex curved cavity Download PDFInfo
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- CN109915858A CN109915858A CN201910153805.2A CN201910153805A CN109915858A CN 109915858 A CN109915858 A CN 109915858A CN 201910153805 A CN201910153805 A CN 201910153805A CN 109915858 A CN109915858 A CN 109915858A
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- flameholder
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- gas
- supporting plate
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Abstract
The present invention provides one kind can premix the supporting plate flameholder with standing vortex curved cavity comprising: working connection Fuel Injector Bar, eye, outlet passageway, pre-blended chamber and standing vortex cavity.High temperature gas flow enters pre-blended chamber after slowing down in eye, working connection Fuel Injector Bar sprays into fuel oil after pre-blended chamber, carry out gas with high temperature to mix and to fuel-firing preheating, high temperature mixes gas and is sprayed by the gas outlet of standing vortex curved cavity front later, in standing vortex cavity, fuel oil with high temperature carrys out gas and further disturbs to mix, again since the air velocity of ejection is lower, it is longer that oil gas disturbs incorporation time in low regime, fuel oil can be further by thermal evaporation, enhance air-fuel mixture uniformity coefficient, since fuel oil is preferable by thermospray vaporizer effect, it is also longer in the low regime air-fuel mixture time, so that air-fuel mixture effect is preferable, therefore igniting can be realized under the conditions of smaller oil-gas ratio and stablizes burning, and then improve the performance of after-burner.
Description
Technical field
The invention belongs to gas-turbine unit fields, and in particular to one kind can premix the fire of the supporting plate with standing vortex curved cavity
Flame stabilizer.
Background technique
Traditional after-burner fueling injection equipment and flameholder are directly placed in the main gas flow path of after-burner
In, blocking inevitably is generated to blocking primary air, apparent pitot loss is caused, does not open " cold conditions " when reinforcing especially
Lower flow resistance loss is larger, causes its oil consumption rate higher, cannot be used for a long time.By after-burner flameholder with it is whole after turbine
It flows supporting plate and the reinforcing inner cone with gaseous film control carries out integrated design, conventional force flame combustion chamber stabilizer can be cancelled, greatly
Reduce the flow resistance loss under non-reinforcing " cold conditions " greatly, shorten after-burner length, reduces additional mass, improve pushing away for engine
Compare again.In addition, drawing the cooling rectification supporting plate of outer culvert air and reinforcing inner cone, its wall temperature can be reduced, to reduce after-burner
Infrared intensity.
Modern advanced fanjet is to reach bigger thrust ratio, and the temperature rise of main combustion chamber is big, and combustion gas is warm before turbine
Degree significantly improves, and gas flow is big, and flow velocity is faster so that into the incoming flow temperature of turbofan after-burner or punching press after-burner
Degree and speed greatly improve, and temperature of incoming flow improves the evaporation for being conducive to fuel oil, but also shorten the penetration range after fuel oil ejection,
Mixing capacity weaken, and raisings of speed of incoming flow more exacerbate fuel oil and air blending unfavorable factor simultaneously, speed of incoming flow increasing
The residence time of fuel oil in the combustion chamber is shortened after adding, and bigger difficulty is brought to burning tissues.And in high temperature gas flow
The stabilizer and fuel feed pump of middle work require to be cooled down, therefore flameholder and oil supply system are carried out integration and set
Meter, to improve job stability, the reliability of stabilizer.Design can solve the oil spout of problem above and to stablize integral flame steady
Determining device structure is the key that reinforce stamping combustion chamber in turbo ramjet engine and fanjet to need to be solved.
Summary of the invention
The technical problem to be solved by the present invention is to propose that one kind can premix the supporting plate flameholder with standing vortex curved cavity,
Including flameholder, working connection Fuel Injector Bar, eye, outlet passageway, blending chamber, standing vortex cavity, with the prior art
It compares, the advantages of this programme is that the mixed airflow of engine provided with internal duct and external duct can be logical by air inlet that flameholder head opens up
Road enters inside flameholder, and the blending at flameholder center is intracavitary to be blended with fuel oil, to fuel-firing preheating, finally by
High Temperature Gas can be improved in the angled ejection of nozzle orifice positioned at supporting plate two sides standing vortex curved cavity front, such design
Body is conducive to the atomization and vaporization of fuel oil and the mixing with air-flow to the heating effect of fuel oil, while air-flow is in channel interior flow velocity
It reduces, after being sprayed from nozzle into standing vortex cavity, certain disturbance not only is caused to fuel oil injection track, it is mixed also to extend oil gas
The time of conjunction further enhances fuel-oil atmozation and air-fuel mixture uniformity coefficient, and then improves efficiency of combustion.
Technical solution
The purpose of the present invention is to provide one kind can premix the supporting plate flameholder with standing vortex curved cavity.
Technical solution of the present invention is as follows:
A kind of supporting plate flameholder premixed with standing vortex curved cavity, comprising: working connection Fuel Injector Bar, air feeding in center are logical
Road, outlet passageway, pre-blended chamber and standing vortex cavity.It is characterized by: flameholder is uniformly distributed circumferentially in reinforcing inner cone
On, flameholder section is streamlined, and flameholder has eye, and eye is located at flame stabilization
Pre-blended chamber is provided at device central axes, in flameholder, eye extends to pre- mix by flameholder head
Mixed chamber, outlet passageway extend to flameholder edge of a wing front by pre-blended chamber, and working connection Fuel Injector Bar is located at eye
Two sides, pre-blended chamber front, oil outlet are connected to pre-blended chamber, and oil gas is logical by outlet after the intracavitary Hybrid Heating of pre-blended
Road is sprayed into standing vortex cavity, is carried out gas with high temperature in standing vortex curved cavity and is further mixed.Eye width is fire
The 1/10~1/5 of flame stabilizer maximum width, pre-blended chamber are located at flameholder center, and it is steady that pre-blended chamber width accounts for flame
Determine the 1/4~1/2 of device width, length is the 1/4~1/2 of flameholder length, and outlet passageway is located at flameholder rear portion
Front end in the standing vortex cavity of two sides, jet angle are 30~60 degree, and outlet passageway width and angle are specifically set according to the actual situation
Meter.
The invention has the following advantages:
The flameholder of program design the advantage is that the high temperature gas flow after introducing burning enters in flameholder
Portion enters pre-blended chamber after slowing down in the channel and carrys out gas phase with high temperature after fuel oil is sprayed into pre-blended chamber by working connection Fuel Injector Bar
It mixing and to fuel-firing preheating, high temperature mixes gas and is sprayed by the gas outlet of standing vortex curved cavity front later, in standing vortex curved cavity,
Fuel oil with high temperature carrys out gas and further disturbs to mix, and since the air velocity of ejection is lower, oil gas disturbs in the low regime of rear
Incorporation time is longer, and fuel oil can enhance air-fuel mixture uniformity coefficient, and then improve after-burner further by thermal evaporation
Efficiency of combustion.This programme can be realized because greatly reinforcing the blending degree of mixed gas under the conditions of lesser oil-gas ratio
Stable ignition adapts to more severe operating condition, expands kindling oil-gas ratio range.
Detailed description of the invention
Fig. 1: one kind can premix the two-dimensional axial Longitudinal cross section schematic of the supporting plate flameholder with standing vortex curved cavity
In figure: 1- eye, 2- working connection Fuel Injector Bar, 3- working connection oil outlet, 4- pre-blended chamber, 5- outlet are logical
Road, the gas outlet 6-, 7- standing vortex curved cavity
Specific embodiment
Now in conjunction with attached drawing, the invention will be further described:
In conjunction with Fig. 1, the present invention provides one kind can premix the supporting plate flameholder with standing vortex curved cavity.Fig. 1 is one
Kind can premix the two-dimensional axial Longitudinal cross section schematic of the supporting plate flameholder with standing vortex curved cavity.
Flameholder is integrally in symmetrical structure, by provided with internal duct and external duct Lai air-flow by air feeding in center road (1) enter pre-blended
Chamber (4), meanwhile, fuel oil is ejected to pre-blended chamber (4), fuel oil and high temperature from working connection oil outlet (3) by working connection Fuel Injector Bar (2)
Mixed gas Hybrid Heating in pre-blended chamber (4), and enhance combustion gas and carry out the blending degree of gas with high temperature, then by outlet passageway (5)
Be discharged at a certain angle by the gas outlet (6) of standing vortex curved cavity (7) front end, in the standing vortex curved cavity (7) further with
High temperature carrys out gas mixing, enhances the blending of oil gas again, and since the air velocity of ejection is lower, oil gas is disturbed in the low regime of rear
Dynamic incorporation time is longer, and fuel oil can enhance air-fuel mixture uniformity coefficient, and then improve after-burner further by thermal evaporation
Efficiency of combustion.
Claims (4)
1. one kind can premix the supporting plate flameholder with standing vortex curved cavity, comprising: working connection Fuel Injector Bar, air feeding in center are logical
Road, outlet passageway, pre-blended chamber and standing vortex cavity, it is characterised in that: flameholder is uniformly distributed circumferentially in reinforcing inner cone
On, flameholder section is integrally streamlined, and flameholder has eye, and eye is located at flame
Pre-blended chamber is provided at stabilizer central axes, in flameholder, eye is extended to by flameholder head
Pre-blended chamber, outlet passageway extend to flameholder edge of a wing front by pre-blended chamber, and working connection Fuel Injector Bar is located at air feeding in center
Channel two sides, pre-blended chamber front, oil outlet are connected to pre-blended chamber, and oil gas is after the intracavitary Hybrid Heating of pre-blended, by going out
Gas channel is sprayed into standing vortex cavity.
2. one kind according to claim 1 can premix the supporting plate flameholder with standing vortex curved cavity, it is characterised in that:
Flameholder is fixed between reinforcing inner cone and rear culvert channel injector, is connect with conical inner body, circumferential evenly distributed, setting 10
~16, every flameholder 100~300mm of length, 10~40mm of thickness, flameholder tail portion is arc-shaped, and radius 30~
60mm。
3. one kind according to claim 1 or 2 can premix the supporting plate flameholder with standing vortex curved cavity, feature exists
In: eye width is the 1/10~1/5 of flameholder maximum width, and pre-blended chamber is located at flameholder center
Place, pre-blended chamber width account for the 1/4~1/2 of flameholder width, and length is the 1/4~1/2 of flameholder length, outlet
Channel is located at the front end in the standing vortex cavity of flameholder rear portion two sides, and jet angle is 30~60 degree, outlet passageway width and
Angle specifically designs according to the actual situation.
4. one kind according to claim 1,2 or 3 can premix the supporting plate flameholder with standing vortex curved cavity, feature
Be: standing vortex curved cavity is located at supporting plate flameholder two sides of tail, and section is in a rectangular trapezoid, and one edge lengths of the inside are fire
The 1/10~1/5 of flame stabilizer length, one edge lengths of outside are the 1/10~1/5 of flameholder length, and right angle accounts for fire on one side
The 1/5~1/3 of flame stabilizer width, bevel edge angle are 30~60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910153805.2A CN109915858A (en) | 2019-03-01 | 2019-03-01 | A kind of supporting plate flameholder premixed with standing vortex curved cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910153805.2A CN109915858A (en) | 2019-03-01 | 2019-03-01 | A kind of supporting plate flameholder premixed with standing vortex curved cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109915858A true CN109915858A (en) | 2019-06-21 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910153805.2A Pending CN109915858A (en) | 2019-03-01 | 2019-03-01 | A kind of supporting plate flameholder premixed with standing vortex curved cavity |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762554A (en) * | 2019-10-24 | 2020-02-07 | 南京航空航天大学 | Evaporative cavity flame stabilizer with self-circulation preheating of fuel gas |
| CN111706879A (en) * | 2020-06-10 | 2020-09-25 | 中国空气动力研究与发展中心 | Standing vortex combustion chamber class flame stabilizing concave cavity and oil gas matching device |
| CN113154446A (en) * | 2021-03-17 | 2021-07-23 | 南京航空航天大学 | Support plate type stabilizer for intensified combustion of afterburner |
| CN114165813A (en) * | 2021-12-03 | 2022-03-11 | 北京航空航天大学 | Pneumatic auxiliary integrated support plate stabilizer with double oil way oil supply |
| CN117212836A (en) * | 2023-10-26 | 2023-12-12 | 融通航空发动机科技有限公司 | Supersonic aircraft and independent oil supply combined flame stabilizer |
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| CN106642200A (en) * | 2016-12-23 | 2017-05-10 | 中航空天发动机研究院有限公司 | Standing vortex type concave cavity support plate flame stabilizer |
| CN106678876A (en) * | 2016-11-18 | 2017-05-17 | 西北工业大学 | Afterburner with airflow channel designed in rectifying support plate |
| CN106765310A (en) * | 2016-12-23 | 2017-05-31 | 中航空天发动机研究院有限公司 | For the flameholder with pre-blended chamber of engine chamber |
| CN108758693A (en) * | 2018-04-16 | 2018-11-06 | 西北工业大学 | A kind of integrated after-burner with double oil circuits and butt center wimble structure |
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2019
- 2019-03-01 CN CN201910153805.2A patent/CN109915858A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678876A (en) * | 2016-11-18 | 2017-05-17 | 西北工业大学 | Afterburner with airflow channel designed in rectifying support plate |
| CN106642200A (en) * | 2016-12-23 | 2017-05-10 | 中航空天发动机研究院有限公司 | Standing vortex type concave cavity support plate flame stabilizer |
| CN106765310A (en) * | 2016-12-23 | 2017-05-31 | 中航空天发动机研究院有限公司 | For the flameholder with pre-blended chamber of engine chamber |
| CN108758693A (en) * | 2018-04-16 | 2018-11-06 | 西北工业大学 | A kind of integrated after-burner with double oil circuits and butt center wimble structure |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762554A (en) * | 2019-10-24 | 2020-02-07 | 南京航空航天大学 | Evaporative cavity flame stabilizer with self-circulation preheating of fuel gas |
| CN110762554B (en) * | 2019-10-24 | 2024-04-30 | 南京航空航天大学 | Evaporation type concave flame stabilizer with self-circulation preheating of fuel gas |
| CN111706879A (en) * | 2020-06-10 | 2020-09-25 | 中国空气动力研究与发展中心 | Standing vortex combustion chamber class flame stabilizing concave cavity and oil gas matching device |
| CN111706879B (en) * | 2020-06-10 | 2023-06-27 | 中国空气动力研究与发展中心 | Flame-stabilizing concave cavity and oil-gas matching device for duty stage of vortex-holding combustion chamber |
| CN113154446A (en) * | 2021-03-17 | 2021-07-23 | 南京航空航天大学 | Support plate type stabilizer for intensified combustion of afterburner |
| CN114165813A (en) * | 2021-12-03 | 2022-03-11 | 北京航空航天大学 | Pneumatic auxiliary integrated support plate stabilizer with double oil way oil supply |
| CN117212836A (en) * | 2023-10-26 | 2023-12-12 | 融通航空发动机科技有限公司 | Supersonic aircraft and independent oil supply combined flame stabilizer |
| 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 |
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Application publication date: 20190621 |
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