CN109340820A - A kind of integrated after-burner with supporting plate and cooling structure - Google Patents
A kind of integrated after-burner with supporting plate and cooling structure Download PDFInfo
- Publication number
- CN109340820A CN109340820A CN201811165867.7A CN201811165867A CN109340820A CN 109340820 A CN109340820 A CN 109340820A CN 201811165867 A CN201811165867 A CN 201811165867A CN 109340820 A CN109340820 A CN 109340820A
- Authority
- CN
- China
- Prior art keywords
- supporting plate
- rectification
- flameholder
- fuel
- burner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
Abstract
The present invention provides a kind of integrated after-burner with supporting plate and cooling structure, supporting plate and cooling structure are used in integrated after-burner, it is hollow as oil feeding line to reinforce inner cone setting, after-burner can preheat the fuel oil in reinforcing inner cone in combustion, fuel oil is set to reach evaporation or supercriticality, single channel is arranged inside rectification supporting plate flameholder, two sides are distributed supporting plate and fuel injection hole carries out fuel oil injection, can be improved fuel-oil atmozation evaporation effect；Cooling air cavity is set in setting cooling in rectification supporting plate flameholder, avoid spray bar because of coking and blocking caused by overheating, film cooling holes are arranged in rectification supporting plate flameholder rear wall, gaseous film control is carried out to rear wall, thus the stability and high efficiency burning in high-temperature high-speed airflow now.
Description
Technical field
The invention belongs to gas-turbine unit fields, and in particular to a kind of integrated afterbunring of novel cooling structure
Room.
Background technique
For military fighter aircraft is compared to different civil aviatons or transporter, needs engine to provide in a short time and greatly push away
Power the job requirements such as accelerates, pursues and attacks to meet, enhances the mobility of aircraft, countries in the world air force active service major combat is motor-driven at present
Power device is all made of afterburning turbofan engine.After-burner is between gas turbine and jet pipe, primary structure packet
It has included inside/outside and has contained the components such as mixing diffuser, flameholder, fuel nozzle, vibrationproof heat screen and cylinder.Through main chamber
Afterwards, also a large amount of remaining oxygen is unutilized in air, therefore can discharge heat by oil jetting combustion again in after-burner, from
And improve the specific thrust and gross thrust of engine.
Conventional force combustion chamber stabilizer and fuel oil jet pipe are directly installed on after turbine in high temperature gas flow flow path, are easy to happen
Overheat, ablation and results in blockage to primary air at deformation, reduces engine reliability and stability, is not especially opening the " cold of reinforcing
Flow resistance loss is larger under state ", prevents it from being used for a long time.Therefore, in the 1990s, proposing a kind of after-burner in the world
With the scheme of turbine rear frame integrated design.It is mainly characterized by the rectification supporting plate and after-burner of turbine rear frame
Flameholder carries out integrated design, flameholder is moved forward, outer culvert air-flow enters reinforcing by stabilizer inner passage
Cooling flame stabilizer in combustion chamber improves the reliability of after-burner, and internal that fuel pipe is housed, this scheme can
It effectively shortens the length of after-burner, keeps structure more compact, less flow losses improve thrust ratio.
The various burners such as gas-turbine combustion chamber, aero-engine main chamber and after-burner are commonly encountered burning
Unstable phenomenon, also referred to as hugging.This phenomenon will affect the normal work of combustion chamber, in addition cause component damage and
It destroys, it usually needs the measure for preventing combustion oscillation, such as the vibrationproof heat screen of installation porous ripple shape are taken on combustion chamber.
For integrated after-burner, it is therefore intended that the fuel combustion efficiency and job stability of combustion chamber are improved, and
Damage of the high temperature mainstream to component is reduced as far as possible.The wherein difference of fuel path design and spray regime, being capable of very great Cheng
Degree influences the atomization and vaporization effect of fuel oil, to further influence burn indoor efficiency of combustion and combustion stability.High temperature combustion
It is similarly important to the cooling problem of rectification supporting plate flameholder in gas, to make to rectify supporting plate flameholder in high-temperature gas
Middle reliably working, it is necessary to assure the wall surface temperature of stabilizer will be in the range of material can be born, therefore design cooling structure,
Introduce suitable cooling air stabilizer cool down it is particularly important.
Summary of the invention
The technical problem to be solved by the present invention is to propose a kind of integrated after-burner with supporting plate and cooling structure.
The rectification supporting plate flameholder that the present invention is arranged is provided with fuel injection hole, energy from internal single channel oil inlet, in two sides of tail
Fuel-oil atmozation evaporation effect is enough improved, sets hollow as oil feeding line for reinforcing inner cone, after-burner is in combustion process
In can to reinforcing inner cone in fuel oil preheat, so that fuel oil is reached evaporation or supercriticality.Supporting plate is rectified in the present invention
Cooling air cavity is set in flameholder, avoids spray bar because of coking and blocking caused by overheating, in rectification supporting plate flameholder
Rear wall arranges film cooling holes, carries out gaseous film control to rear wall, thus the stability and high efficiency burning in high-temperature high-speed airflow now.
Technical solution
The purpose of the present invention is to provide a kind of integrated after-burner with supporting plate and cooling structure.
Technical solution of the present invention is as follows:
A kind of integrated after-burner with supporting plate and cooling structure, including reinforcing inner cone, rectification supporting plate flame stabilization
Device, wave-pieced type mixer, rectification supporting plate flameholder fuel gallery, rectification supporting plate flameholder two sides supporting plate, rectification branch
Plate flameholder cooling duct, rectification supporting plate flameholder two sides jet hole and tail portion air film pore size distribution and afterbunring
Room casing.
The reinforcing inner cone, it is characterised in that: reinforcing inner cone center be hollow shape, inner wall face thickness and outside wall surface with a thickness of
2mm-6mm, distance is 15mm-25mm between inner wall and outside wall surface, and reinforcing inner cone front end setting fuel feed hole 2-4, diameter is
6mm-10mm。
The rectification supporting plate flameholder, it is characterised in that: rectification supporting plate flameholder with a thickness of 20mm-40mm,
Width is 200mm-350mm, is highly 300mm-400mm, about 15 ° -20 ° of supporting plate angle.
Rectification supporting plate flameholder fuel gallery mode, it is characterised in that: rectify supporting plate flameholder and add
Power inner cone be connected, supporting plate center be fuel gallery, section be it is trapezoidal, trapezoidal height be 50mm-90mm, width 10-20mm；It is whole
Stream supporting plate flameholder two sides are disposed with double fuel injection hole, are directed towards the oblique spray orifice of two sides supporting plate, are located at branch postlaminar part
Position, fuel injection hole diameter are 5mm-10mm, and fuel injection hole is along rectification supporting plate vertical direction linear distribution, unilateral fuel oil spray
Perforation quantity is two rows of 31-41 total.
The rectification supporting plate flameholder two sides supporting plate design, it is characterised in that: rectification supporting plate flameholder two sides
Center increases symmetrical supporting plate, and single-sided linear arranges that two pieces of supporting plates, supporting plate are tabular, supporting plate and rectification supporting plate flame stabilization
Device centerlines are 15 degree to 40 degree, with a thickness of 5mm-25mm.
The rectification supporting plate flameholder cooling structure design, it is characterised in that: inside rectification supporting plate flameholder
It is disposed with subtriangular cooling duct on the outside of fuel gallery, channel width is about 15mm-25mm, rectifies supporting plate flame stabilization
Device tail portion is disposed with double air film hole, and diameter 5mm-10mm, double total 32-42 are a.
The wave-pieced type mixer, it is characterised in that: section is by lobe type, so that system blending is high-efficient, improves fuel oil
Efficiency.
The invention has the following advantages:
The invention is in integrated after-burner using cooling and two sides supporting plate structure.This technology use two sides supporting plate, two
The fuel oil part that the double nozzle opening in side sprays can collide on branch wooden partition, and broken, improvement afterbunring will occur after fuel oil collision
Indoor fuel-oil atmozation evaporation effect makes fuel oil and the more uniform blending of air, improves efficiency of combustion, meanwhile, two sides supporting plate energy
Air velocity is enough reduced, steady air flow under collective effect in these areas, can effectively improve the burning of after-burner
Efficiency and combustion stability.This technology uses cooling structure, arranges cooling duct inside rectification supporting plate flameholder, that is, guarantees
Fuel oil spray when be in be easy to evaporate temperature, and avoid due to temperature it is excessively high caused by nozzle coking, block, tail portion cloth
It is equipped with double air film hole, air film is formed on surface, completely cuts off ablation of the high-temperature region to parts surface.
Detailed description of the invention
Fig. 1: the integrated after-burner schematic three dimensional views with supporting plate and cooling structure
Fig. 2: the integrated after-burner mixer schematic three dimensional views with supporting plate and cooling structure
Fig. 3: rectification supporting plate flameholder and reinforcing inner cone schematic diagram
Fig. 4: single rectification supporting plate flameholder schematic diagram
In Fig. 1: 1- casing 2- injector 3- rectifies supporting plate flameholder 4- and reinforces inner cone
In Fig. 2: 1- wave-pieced type mixer 2- injector 3- rectifies supporting plate flameholder 4- and reinforces inner cone
In Fig. 3: 1- reinforces inner cone 2- and rectifies supporting plate flameholder
In Fig. 4: the supporting plate of the cooling duct the 1- 2- oil inside offering channel two sidewalls the 3- rear wall air film hole 4- two sides nozzle opening 5-
Specific embodiment
Now in conjunction with attached drawing, the invention will be further described:
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, the present invention is provided: the integrated after-burner with supporting plate and cooling structure,
Rectification supporting plate flameholder two sides are disposed with supporting plate, and branch postlaminar part has a double inclined hole nozzle opening, nozzle opening by fuel oil spray to
On branch wooden partition, broken and secondary-atomizing is carried out, improves after-burner efficiency of combustion and combustion stability.Rectify branch intralamellar part
Cooling duct is set, double air film hole is arranged in rear wall, avoid due to temperature it is excessively high caused by nozzle coking, block, isolation
Ablation of the high-temperature region to parts surface.Fig. 1 is the integrated after-burner schematic three dimensional views with supporting plate and cooling structure, Fig. 2
For the integrated after-burner mixer schematic three dimensional views with supporting plate and cooling structure, Fig. 3 is rectification supporting plate flameholder
With reinforcing inner cone schematic diagram, Fig. 4 is single rectification supporting plate flameholder schematic diagram.
Fuel oil (4) reinforcing inner cone in Fig. 1 is in high-temperature fuel gas, so that the fuel oil temperature in oil pocket constantly rises,
Subsequent fuel oil enters in figure (3) by the channel that (3) in Fig. 1 rectify supporting plate flameholder with (4) reinforcing inner cone is connected in Fig. 1
Supporting plate flameholder is rectified, reheating is carried out, fuel oil further increases in oil duct, reaches evaporating state or surpasses and faces
Boundary's state, later, fuel oil are sprayed by the fuel injection hole that (3) in Fig. 1 rectify supporting plate flameholder two sides rear portion, and are impacted
Into Fig. 4 of two sides on (5) supporting plate, have the function that fuel oil secondary-atomizing, reinforces gas mixing by wave-pieced type mixer
Efficiency improves fuel efficiency.The height that prevents from spending that cooling air is introduced into Fig. 4 (1) cooling duct reduction rectification supporting plate causes
Nozzle coking, block, while cooling air is covered on surface by the air film hole of tail portion, completely cut off high-temperature region to component table
The ablation in face.
Claims (6)
1. a kind of integrated after-burner with supporting plate and cooling structure, including reinforcing inner cone, rectification supporting plate flameholder,
Wave-pieced type stabilizer, rectification supporting plate flameholder fuel gallery, rectification supporting plate flameholder two sides supporting plate, rectification supporting plate fire
Flame stabilizer cooling duct, rectification supporting plate flameholder two sides jet hole and tail portion air film pore size distribution and after-burner machine
Casket.
2. reinforcing inner cone according to claim 1, it is characterised in that: reinforcing inner cone center be hollow shape, inner wall face thickness with
Outside wall surface is with a thickness of 2mm-6mm, and distance is 15mm-25mm between inner wall and outside wall surface, and fuel feed hole is arranged in reinforcing inner cone front end
2-4, diameter 6mm-10mm.
3. wave-pieced type mixer according to claim 1, it is characterised in that: section is by lobe type, so that system blends efficiency
High, raising fuel efficiency.
4. rectifying supporting plate flameholder according to claim 1, it is characterised in that: in stream supporting plate flameholder and reinforcing
Cone be connected, supporting plate center be fuel gallery, section be it is trapezoidal, trapezoidal height be 50mm-90mm, width 10-20mm；Rectify supporting plate
Flameholder two sides are disposed with double fuel injection hole, are directed towards the oblique spray orifice of two sides supporting plate, are located at supporting plate rear positions, combustion
Oil spurts bore dia is 5mm-10mm, and fuel injection hole is along rectification supporting plate vertical direction linear distribution, unilateral fuel injection hole number
Amount is two rows of 31-41 total.
5. rectification supporting plate flameholder cooling structure design according to claim 1, it is characterised in that: rectification supporting plate flame
It is disposed with subtriangular cooling duct on the outside of stabilizer internal fuel channel, channel width is about 15mm-25mm, rectification branch
Plate flameholder tail portion is disposed with double air film hole, and diameter 5mm-10mm, double total 32-42 are a.
6. rectification supporting plate flameholder two sides supporting plate design according to claim 1, it is characterised in that: rectification supporting plate flame
Stabilizer two sides center increases symmetrical supporting plate, and single-sided linear arranges that two pieces of supporting plates, supporting plate are tabular, supporting plate and rectification branch
Plate flameholder centerlines are 15 degree to 40 degree, with a thickness of 5mm-25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811165867.7A CN109340820A (en) | 2018-10-08 | 2018-10-08 | A kind of integrated after-burner with supporting plate and cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811165867.7A CN109340820A (en) | 2018-10-08 | 2018-10-08 | A kind of integrated after-burner with supporting plate and cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109340820A true CN109340820A (en) | 2019-02-15 |
Family
ID=65308629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811165867.7A Pending CN109340820A (en) | 2018-10-08 | 2018-10-08 | A kind of integrated after-burner with supporting plate and cooling structure |
Country Status (1)
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| CN (1) | CN109340820A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228162A (en) * | 2020-10-16 | 2021-01-15 | 中国航发四川燃气涡轮研究院 | Boosting turbofan engine radar and infrared comprehensive stealth structure |
| CN112303664A (en) * | 2020-10-26 | 2021-02-02 | 西北工业大学 | Integrated afterburner of preheating double-oil-way annular flame stabilizer |
| CN112902225A (en) * | 2021-02-04 | 2021-06-04 | 厦门大学 | Multistage afterburning chamber with outer ring rotary detonation supercharged combustion chamber |
| CN113551262A (en) * | 2021-07-19 | 2021-10-26 | 南昌航空大学 | Take extension board flame holder of crescent sand dune profile |
| CN113566236A (en) * | 2021-07-19 | 2021-10-29 | 南昌航空大学 | Take vortex generator's wave trailing edge extension board flame holder |
| CN113701190A (en) * | 2021-09-01 | 2021-11-26 | 南昌航空大学 | Take fin vortex generator's extension board flame holder |
| CN113864819A (en) * | 2021-09-14 | 2021-12-31 | 南京航空航天大学 | Afterburner with air cooling structure |
| CN114877374A (en) * | 2022-04-21 | 2022-08-09 | 南京航空航天大学 | Integrated afterburning support plate and afterburning chamber using same |
| CN115435337A (en) * | 2022-09-01 | 2022-12-06 | 中国航发贵阳发动机设计研究所 | Device formed by matching flame stabilizer and oil injection rod |
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| CN106678868A (en) * | 2016-11-18 | 2017-05-17 | 西北工业大学 | Integrated afterburner provided with deflected rectification support plate |
| CN107191968A (en) * | 2017-06-05 | 2017-09-22 | 西北工业大学 | One kind combination cooled rectification support plate flameholder |
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| CN103884024A (en) * | 2014-04-03 | 2014-06-25 | 北京航空航天大学 | Flame crossover device capable of achieving organization combustion and transferring flames to outer duct airflow |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228162A (en) * | 2020-10-16 | 2021-01-15 | 中国航发四川燃气涡轮研究院 | Boosting turbofan engine radar and infrared comprehensive stealth structure |
| CN112303664A (en) * | 2020-10-26 | 2021-02-02 | 西北工业大学 | Integrated afterburner of preheating double-oil-way annular flame stabilizer |
| CN112303664B (en) * | 2020-10-26 | 2022-03-15 | 西北工业大学 | Integrated afterburner of preheating double-oil-way annular flame stabilizer |
| CN112902225B (en) * | 2021-02-04 | 2022-03-15 | 厦门大学 | Multistage afterburning chamber with outer ring rotary detonation supercharged combustion chamber |
| CN112902225A (en) * | 2021-02-04 | 2021-06-04 | 厦门大学 | Multistage afterburning chamber with outer ring rotary detonation supercharged combustion chamber |
| CN113566236B (en) * | 2021-07-19 | 2022-05-20 | 南昌航空大学 | Take vortex generator's wave trailing edge extension board flame holder |
| CN113566236A (en) * | 2021-07-19 | 2021-10-29 | 南昌航空大学 | Take vortex generator's wave trailing edge extension board flame holder |
| CN113551262A (en) * | 2021-07-19 | 2021-10-26 | 南昌航空大学 | Take extension board flame holder of crescent sand dune profile |
| CN113551262B (en) * | 2021-07-19 | 2022-06-14 | 南昌航空大学 | Take extension board flame holder of crescent sand dune profile |
| CN113701190A (en) * | 2021-09-01 | 2021-11-26 | 南昌航空大学 | Take fin vortex generator's extension board flame holder |
| CN113701190B (en) * | 2021-09-01 | 2022-11-15 | 南昌航空大学 | Take fin vortex generator's extension board flame holder |
| CN113864819A (en) * | 2021-09-14 | 2021-12-31 | 南京航空航天大学 | Afterburner with air cooling structure |
| CN114877374A (en) * | 2022-04-21 | 2022-08-09 | 南京航空航天大学 | Integrated afterburning support plate and afterburning chamber using same |
| CN115435337A (en) * | 2022-09-01 | 2022-12-06 | 中国航发贵阳发动机设计研究所 | Device formed by matching flame stabilizer and oil injection rod |
| CN115435337B (en) * | 2022-09-01 | 2023-10-27 | 中国航发贵阳发动机设计研究所 | Device formed by matching flame stabilizer with oil injection rod |
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Application publication date: 20190215 |