CN108844094A - A kind of after-burner using flat fan spray nozzle fuel feeding - Google Patents
A kind of after-burner using flat fan spray nozzle fuel feeding Download PDFInfo
- Publication number
- CN108844094A CN108844094A CN201810219559.1A CN201810219559A CN108844094A CN 108844094 A CN108844094 A CN 108844094A CN 201810219559 A CN201810219559 A CN 201810219559A CN 108844094 A CN108844094 A CN 108844094A
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- Prior art keywords
- burner
- fuel
- spray nozzle
- flat fan
- fan spray
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Classifications
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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
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
Abstract
The present invention discloses a kind of after-burner using flat fan spray nozzle fuel feeding, belongs to aero-engine field, this hair is evenly arranged by being provided with supporting plate on fueller in after-burner, and along the circumference vertical direction of after-burner；Supporting plate is radially inside provided with Fuel Injector Bar, and the open cross-section that flat fan spray nozzle and plane sector fuel nozzle are arranged radially in the side wall of Fuel Injector Bar is V-type；Design of the invention expands the fuel spray angle of flare, reduces nozzle quantity, increases nozzle diameter, while making fuel oil radially and circumferentially concentration distribution is more uniform, just has the reliable and stable burning of after-burner, solves problems of the prior art.
Description
Technical field
The invention belongs to aero-engine field, in particular to a kind of afterbunrings using flat fan spray nozzle fuel feeding
Room.
Background technique
Since last century, after-burner has been more and more widely used in aero-engine.For the army of raising
With the operational performance and flight envelope of fighter plane, it is necessary to increase fuel atomization effect in after-burner, keep fuel oil complete with air
Full mixing, and fuel space is evenly distributed.The quality of fuel atomization effect decides the quality of combustion chamber operational characteristic.Therefore,
Fuel-oil atmozation research is a critically important part in aero-engine research.
Fuel Injector Bar in fanjet afterbunring room common at present generallys use direct-injection type fuel nozzle, fuel oil spray
The mist angle of flare is small, and atomizing effect is poor, and nozzle equivalent diameter is smaller, easily leads to the blockage problem of nozzle, seriously affects hair
The stability and reliability of motivation combustion chamber operational.With the development that aeronautical technology is maked rapid progress, modern advanced opportunity of combat is to aviation
Engine performance requirement is higher and higher, and the simple nozzle atomizing effect in conventional force combustion chamber on Fuel Injector Bar is poor, easily leads
Cause blocking, and it is heated when easy coking, radially and circumferentially the non-uniform problem of concentration distribution is more and more prominent for fuel oil, be unfavorable for reinforcing
The reliable and stable burning of combustion chamber, has seriously affected the overall performance of aero-engine.
Summary of the invention
Aiming at the problems existing in the prior art, the invention discloses a kind of reinforcing combustions using flat fan spray nozzle fuel feeding
Room is burnt, using flat fan spray nozzle, nozzle design expands the fuel spray angle of flare, reduces nozzle quantity, and it is straight to increase nozzle
Diameter, while making fuel oil radially and circumferentially concentration distribution is more uniform, just there is the reliable and stable burning of after-burner, solves existing
The problem of technology.
The invention is realized in this way：
A kind of after-burner using flat fan spray nozzle fuel feeding, including after-burner come along air in afterbunring room
The axial centerline in stream direction is provided with turbine；Mixing machine is provided between turbine and after-burner side wall；Shape after mixing machine
At diffuser, it is provided with fueller after diffuser, supporting plate is provided on fueller, and hang down along the circumference of after-burner
Histogram is to being evenly arranged；Supporting plate is radially inside provided with Fuel Injector Bar, and the two side walls in supporting plate.In the side wall of Fuel Injector Bar
It is provided with flat fan spray nozzle, plane sector fuel nozzle is multiple along the radial direction arrangement of Fuel Injector Bar.Flat fan spray nozzle
Opening stretches out supporting plate outside wall surface；The open cross-section of plane sector fuel nozzle is V-type.
Flat fan spray nozzle is 1~20 along the quantity that the radial direction of after-burner is arranged on the side wall of Fuel Injector Bar
A, the fuel spray between radial two fan nozzles overlaps each other, and plane sector fuel nozzle opening and gas incoming flow
Direction is vertical, and plane sector fuel nozzle is formed by fan-shaped oil cone and arranges along radial direction, is atomized completely convenient for fuel oil, and
It is uniformly distributed along after-burner radial space.Fuel Injector Bar global shape can realize that flat fan spray nozzle then may be used by casting
It is milled by laser boring, drilling or surface to process.
Further, the flat fan spray nozzle quantity is 1~20；Particular number is according to the sector of flat fan spray nozzle
Angle, after-burner radius size, Fuel Injector Bar actual size and determine, guarantee each plane fan on after-burner radial direction
It is overlapped between the fan-shaped mist of oil that shape nozzle sprays.The distance between flat fan spray nozzle position and supporting plate downbeam tail edge
It is adjusted according to the actual situation, realizes reliable and stable burning after guaranteeing supporting plate.
Further, the Fuel Injector Bar includes the fuel oil runner between entrance, outlet and entrance；Wherein oil spout
Bar entrance is connected with the oil supply pipe of fueller, and outlet is connected with plane sector fuel nozzle.
Further, the V-type opening of the plane sector fuel nozzle is vertical with air direction of flow；Flat fan spray nozzle
Including first side and second side, angle forms fan-spray angle of flare β, angular range between first side and second side
For：30 °~150 °；First side and second side play guide functions, and fuel oil is with plane sector pasta, i.e. first side and second
Side is projected, and nozzle fan angle size determines the angular dimension of the oily conical surface, realizes primary atomization.
Further, the quantity of the Fuel Injector Bar is the integral multiple of supporting plate quantity, and the supporting plate quantity is 1~20, described
Fuel Injector Bar quantity is 1~10 in supporting plate.
Further, the flat fan spray nozzle spout direction is sprayed perpendicular to supporting plate wall surface perpendicular to supporting plate wall surface outward
It penetrates, and the fan-shaped fuel oil face of flat fan spray nozzle ejection is along the radial direction of after-burner circumference.I.e. flat fan spray nozzle sprays
Mouth direction is sprayed outward perpendicular to supporting plate wall surface and towards wall surface, and the fan-shaped fuel oil face that flat fan spray nozzle sprays is along after-burner
Radial direction, it is overlapped between the fan-shaped mist of oil sprayed adjacent flat fan spray nozzle.Plane on adjacent Fuel Injector Bar
Fuel spray overlapped between the fan-shaped mist of oil that fan nozzle sprays, on same Fuel Injector Bar between radial two fan nozzles
It overlaps each other, guarantees that fan-shaped mist of oil adjacent on same Fuel Injector Bar overlaps each other, while the circumferencial direction on adjacent supporting plate is adjacent
Fan-shaped mist of oil overlap each other.
It is mutually perpendicular between the fan-shaped mist of oil that air direction of flow and flat fan spray nozzle spray, in the pneumatic of stream air
Under effect, fuel spray is broken, mixes with air, and realizes further atomization, is being uniformly distributed fuel oil radially with circumferential,
Convenient for the reliable and stable burning in afterbunring room.
Further, the after-burner is also disposed with low-pressure compressor, height along the outlet of air direction of flow
Press compressor, the main chamber being connected with high-pressure compressor；Main chamber is connected with turbine.
The beneficial effect of the present invention compared with prior art is：
1）The combination settings of Fuel Injector Bar and supporting plate reduce flow resistance loss caused by Fuel Injector Bar in afterbunring room, make stagnation pressure
Loss substantially reduces；There is outer culvert cold air to be cooled down in Fuel Injector Bar simultaneously, prevents fuel oil coking and blocking fuel oil spray orifice in Fuel Injector Bar；
2）Middle simple nozzle compared with the prior art uses flat fan spray nozzle on Fuel Injector Bar of the invention, makes fuel spray
The angle of flare becomes larger, and so as to be greatly reduced nozzle quantity, and realizes two fan-shaped sprays by adjusting fan angle size
Space overlap between mist cone, keeps fuel oil more uniform in radial distribution, improves the indoor combustion characteristics of burning；
3）Design of the invention is due to reducing space radius top nozzle quantity, under the conditions of identical fuel flow, plane fuel oil
Fan nozzle equivalent diameter is larger, effectively prevents blockage problem caused by fuel nozzle coking, convenient for combustion chamber each
Reliable and stable burning is realized under complex working condition.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the after-burner using flat fan spray nozzle fuel feeding of the present invention；
Fig. 2 is the present invention a kind of supporting plate, Fuel Injector Bar, the flat fan spray nozzle of the after-burner using flat fan spray nozzle fuel feeding
Structural schematic diagram；
Fig. 3 is flat fan spray nozzle arrangement schematic diagram on Fuel Injector Bar of the present invention；
Fig. 4 is flat fan spray nozzle schematic diagram of the present invention；
Wherein, 001- flat fan spray nozzle, 120- first side, 121- second side, 1- low-pressure compressor, 2- high pressure are calmed the anger
Machine, 3- main chamber, 4- turbine, 5- mixing machine, 6- diffuser, 7- supporting plate, 8- after-burner, 9- fueller, 10- oil spout
Bar, 100- air direction of flow.
Specific embodiment
It is clear to keep the purpose of the present invention, technical solution and effect clearer, referring to the drawings and give an actual example to this
Invention is further described.It should be understood that specific implementation described herein is not used to limit only to explain the present invention
The present invention.
As shown in Figure 1, a kind of after-burner using flat fan spray nozzle fuel feeding of the invention, along air direction of flow
100（Direction guided by arrow in figure）Outlet be disposed with low-pressure compressor 1, high-pressure compressor 2, with high-pressure compressor 2
Connected main chamber 3；Main chamber 3 is connected with turbine 4, is provided with mixing machine 5 between 8 side wall of turbine 4 and after-burner；It mixes
Diffuser 6 is formed after mixed device 5, is provided with fueller 9 after diffuser 6, supporting plate 7 is provided on fueller 9, and along reinforcing
The circumference vertical direction of combustion chamber 8 is evenly arranged；Supporting plate 7 is radially inside provided with Fuel Injector Bar 10, on the side wall of Fuel Injector Bar 10
The radial direction of after-burner 8 is provided with flat fan spray nozzle 001；The opening of flat fan spray nozzle 001 is reached and is propped up
7 outside wall surface of plate；The open cross-section of plane sector fuel nozzle 001 is V-type.
As shown in Fig. 2, Fig. 2 is the structural schematic diagram of supporting plate of the invention, Fuel Injector Bar, flat fan spray nozzle.Fuel Injector Bar 10
Positioned at 7 interior sidewall surface of supporting plate, supporting plate 7 is evenly arranged along the circumference vertical direction of after-burner 8, and Fuel Injector Bar 10 arranges number
Amount is selected as the integral multiple of 7 quantity of supporting plate, and 7 quantity of supporting plate is 1~20, and 10 quantity of Fuel Injector Bar is 1~10 in the supporting plate 7
It is a.Flat fan spray nozzle 001 has been arranged radially in the side wall of Fuel Injector Bar 10；The opening of flat fan spray nozzle 001 is reached and is propped up
7 outside wall surface of plate is concordant.
As shown in Fig. 3 ~ 4, the open cross-section of plane sector fuel nozzle 001 is V-type.Air incoming flow is sprayed perpendicular to fuel oil
Mist fan-shaped surface, flat fan spray nozzle 001 include first side 120 and second side 121, i.e. fuel spray fan-shaped surface.First side
Angle forms fan-spray angle of flare β between face 120 and second side 121, and angular range is：30 °~150 ° namely plane fan
The shape nozzle spray angle of flare is 30 °~150 °.Segment angle arranges that nozzle quantity is 1~20 along the radial direction of after-burner 8
It is a.
The course of work of the invention is：
Outer culvert passes sequentially through low-pressure compressor 1, high-pressure compressor 2, using mixing machine 5 with from turbine（4）What is come over has done
The combustion gas of complete function is blended, and fuel oil reaches plane sector fuel nozzle after the entrance of 10 entrance of Fuel Injector Bar, by fuel oil runner
100, under the squeezing action in one group of face that fan nozzle face is laterally extended, by first side 120, second side of fan nozzle
The guide functions in face 121, fuel oil realize that primary atomization, air incoming flow and fan-shaped pasta mutually hang down with the ejection of plane sector pasta
Directly, under the pneumatic action of stream air, fuel spray is broken, mixes with air, and realizes further atomization, makes fuel oil on edge
It is radially and circumferentially uniformly distributed, uniform and stable trouble-free burning is realized after supporting plate 7；001 position of flat fan spray nozzle and branch
The distance between 7 downbeam tail edge of plate is adjusted according to the actual situation, realizes reliable and stable burning after guaranteeing supporting plate 7.
Embodiments of the present invention are merely to illustrate above in conjunction with preferred embodiment of the present invention described in attached drawing, and
Not as the limitation to aforementioned invention purpose and appended claims content and range, according to the technical essence of the invention
Any simple modification, equivalent change and modification made to the above embodiment still belong to the technology of the present invention and rights protection scope.
Claims (7)
1. a kind of after-burner using flat fan spray nozzle fuel feeding, including after-burner（8）, after-burner（8）It is interior
Axial centerline along air direction of flow is provided with turbine（4）；Turbine（4）With after-burner（8）It is provided between side wall
Mixing machine（5）；Mixing machine（5）After form diffuser（6）, diffuser（6）After be provided with fueller（9）, which is characterized in that institute
The fueller stated（9）On be provided with supporting plate（7）, and along after-burner（8）Circumference vertical direction be evenly arranged；It is described
Supporting plate（7）Radially inside it is provided with Fuel Injector Bar（10）, in Fuel Injector Bar（10）Side wall be arranged radially flat fan spray nozzle
（001）；Flat fan spray nozzle（001）Opening stretch out supporting plate（7）Outside wall surface；The plane sector fuel nozzle（001）'s
Open cross-section is V-shaped.
2. a kind of after-burner using flat fan spray nozzle fuel feeding according to claim 1, which is characterized in that described
Flat fan spray nozzle（001）In Fuel Injector Bar（10）Side wall on along after-burner（8）Radial direction arrangement quantity be 1
~20.
3. a kind of after-burner using flat fan spray nozzle fuel feeding according to claim 1, which is characterized in that described
The Fuel Injector Bar（10）Including the fuel oil runner between entrance, outlet and entrance；Wherein Fuel Injector Bar（10）Entrance and confession
Oily device（9）Oil supply pipe be connected, outlet with plane sector fuel nozzle（001）It is connected.
4. a kind of after-burner using flat fan spray nozzle fuel feeding according to claim 1, which is characterized in that described
Plane sector fuel nozzle（001）V-type opening with air direction of flow（100）Vertically；Flat fan spray nozzle（001）Including
First side（120）And second side（121）, first side（120）And second side（121）Between angle formed fan-spray
Angle of flare β, angular range are：30 °~150 °.
5. a kind of after-burner using flat fan spray nozzle fuel feeding according to claim 1, which is characterized in that described
Fuel Injector Bar（10）Quantity be supporting plate（7）The integral multiple of quantity, the supporting plate（7）Quantity is 1~20, the supporting plate（7）It is interior
Fuel Injector Bar（10）Quantity is 1~10.
6. a kind of after-burner using flat fan spray nozzle fuel feeding according to claim 5, which is characterized in that described
Flat fan spray nozzle（001）Spout direction is perpendicular to supporting plate（7）Wall surface, perpendicular to supporting plate（7）Wall surface sprays outward, and plane
Fan nozzle（001）The fan-shaped fuel oil face of ejection is along after-burner（8）The radial direction of circumference.
7. a kind of after-burner using flat fan spray nozzle fuel feeding according to claim 1, which is characterized in that described
After-burner（8）Outlet along air direction of flow is also disposed with low-pressure compressor（1）, high-pressure compressor（2）, with
High-pressure compressor（2）Connected main chamber（3）；Main chamber（3）With turbine（4）It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219559.1A CN108844094B (en) | 2018-03-16 | 2018-03-16 | Afterburner adopting planar fan-shaped nozzle for supplying oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219559.1A CN108844094B (en) | 2018-03-16 | 2018-03-16 | Afterburner adopting planar fan-shaped nozzle for supplying oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108844094A true CN108844094A (en) | 2018-11-20 |
| CN108844094B CN108844094B (en) | 2020-07-07 |
Family
ID=64211813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810219559.1A Active CN108844094B (en) | 2018-03-16 | 2018-03-16 | Afterburner adopting planar fan-shaped nozzle for supplying oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108844094B (en) |
Cited By (3)
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| CN111306577A (en) * | 2020-02-21 | 2020-06-19 | 南京航空航天大学 | Direct-injection fan-shaped nozzle applied to afterburner concave cavity structure |
| CN113606610A (en) * | 2021-07-27 | 2021-11-05 | 南京航空航天大学 | Pneumatic auxiliary atomization direct injection type nozzle applied to afterburner |
| CN113915323A (en) * | 2021-09-28 | 2022-01-11 | 常州华创航空科技有限公司 | Lubricating oil pipe and transmission case |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306577A (en) * | 2020-02-21 | 2020-06-19 | 南京航空航天大学 | Direct-injection fan-shaped nozzle applied to afterburner concave cavity structure |
| CN111306577B (en) * | 2020-02-21 | 2021-10-26 | 南京航空航天大学 | Direct-injection fan-shaped nozzle applied to afterburner concave cavity structure |
| CN113606610A (en) * | 2021-07-27 | 2021-11-05 | 南京航空航天大学 | Pneumatic auxiliary atomization direct injection type nozzle applied to afterburner |
| CN113915323A (en) * | 2021-09-28 | 2022-01-11 | 常州华创航空科技有限公司 | Lubricating oil pipe and transmission case |
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| Publication number | Publication date |
|---|---|
| CN108844094B (en) | 2020-07-07 |
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