CN114992674A - External relay ignition and starting oil supply device - Google Patents
External relay ignition and starting oil supply device Download PDFInfo
- Publication number
- CN114992674A CN114992674A CN202210699332.8A CN202210699332A CN114992674A CN 114992674 A CN114992674 A CN 114992674A CN 202210699332 A CN202210699332 A CN 202210699332A CN 114992674 A CN114992674 A CN 114992674A
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- Prior art keywords
- oil
- stabilizer
- oil supply
- supply device
- ignition
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Links
- 239000003921 oil Substances 0.000 claims abstract description 119
- 239000003381 stabilizer Substances 0.000 claims abstract description 66
- 238000002347 injection Methods 0.000 claims abstract description 43
- 239000007924 injection Substances 0.000 claims abstract description 43
- 239000007921 spray Substances 0.000 claims abstract description 33
- 239000000295 fuel oil Substances 0.000 claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 238000001704 evaporation Methods 0.000 claims description 40
- 230000008020 evaporation Effects 0.000 claims description 33
- 239000000446 fuel Substances 0.000 claims description 21
- 238000005192 partition Methods 0.000 claims description 9
- 238000004544 sputter deposition Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 2
- 230000003416 augmentation Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/222—Fuel flow conduits, e.g. manifolds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/26—Starting; Ignition
- F02C7/264—Ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/35—Combustors or associated equipment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Abstract
The invention provides an external relay ignition and starting oil supply device which comprises a plurality of boosting starting oil supply main pipes which are distributed in a circular shape, wherein each boosting starting oil supply main pipe comprises a pipeline and an oil spray rod connected with the side wall of the pipeline, a plurality of direct injection type oil spray holes are formed in the oil spray rod, and a relay ignition oil spray hole is formed in any circumferential position of the pipeline. The invention adjusts the position relation of the boosting starting oil supply device and the stabilizer from built-in to external, so that the layout of the nozzle of the oil spray rod corresponds to the air inlet of the evaporative stabilizer, meanwhile, a hole is formed on the pipeline of the oil supply device, so that the fuel oil sprayed by the pipeline forms a certain included angle with the main stabilizer, and under the action of air flow, after the fuel oil track collides with the wall surface of the main stabilizer, the fuel oil flows backwards to the upstream to be distributed, thereby achieving the purpose of a relay nozzle and further igniting the hot jet flame tongue transmitted from the main combustion chamber.
Description
Technical Field
The invention relates to an external relay ignition and starting oil supply device, and belongs to the technical field of aircraft engine design.
Background
The hot jet ignition is a common ignition mode of an afterburner, and the basic principle is that 1 direct injection type nozzle is arranged in main combustion, when an afterburning signal is switched on, quantitative fuel oil is injected through the nozzle to form a hot jet flame tongue, and the flame tongue penetrates through a turbine to reach a main stabilizer of the afterburner. At the moment, fuel oil supplied by the afterburning starting oil supply device is received in the evaporation pipe of the main stabilizer, the oil gas is radially and circumferentially dispersed through the evaporation pipe, an oil-gas mixture is formed in a backflow region of the stabilizer, and after a flame tongue formed by thermal jet reaches the stabilizer, the oil gas in the backflow region is ignited, so that flame coupling and flame propagation in the afterburning chamber are realized, and the afterburning chamber is ignited. However, since the hot jet ignited flame tongue needs to pass through the turbine to reach the afterburner stabilizer, the flame propagation length is long, so the flame propagation length is generally long, and the relay ignition nozzle is arranged at the bypass casing, so that the flame tongue ejected from the main combustion chamber can extend the propagation distance to reach the downstream stabilizer, as shown in fig. 1. Therefore, when the afterburner adopting the evaporative stabilizer is connected for afterburning, the starting oil supply device is generally arranged in the evaporator tube of the stabilizer so as to form a proper oil-gas mixture in the evaporator tube, but the built-in starting oil supply device can involve parts such as the stabilizer and the like when being disassembled and assembled, so that the problems of large overhauling workload, inconvenience in maintenance and the like are caused.
Disclosure of Invention
In order to solve the technical problems, the invention provides an external relay ignition and starting oil supply device which achieves the purposes of no need of independently arranging a relay ignition nozzle, no need of a stabilizer when a boosting starting oil supply main pipe is assembled and disassembled, convenience in assembly and excellent maintainability on the premise of ensuring reliable connection and boosting of the hot jet ignition of a boosting combustion chamber.
The invention is realized by the following technical scheme.
The invention provides an external relay ignition and starting oil supply device, which comprises a plurality of boosting starting oil supply main pipes which are circularly distributed, wherein each boosting starting oil supply main pipe comprises a pipeline and an oil spray rod connected with the side wall of the pipeline, a plurality of direct injection type oil spray holes are arranged on the oil spray rods, and a relay ignition oil spray hole is arranged at any circumferential position of the pipeline; the stabilizer comprises an annular stabilizer connected with the end part of the pipeline and a radial stabilizer connected with the oil injection rod, and an evaporation pipe is arranged in the radial stabilizer; a partition board is arranged in the evaporation tube and divides the evaporation tube into two evaporation chambers; the oil spray rod and the stabilizer form an annular structure.
The oil spraying rod corresponds to the periphery of the evaporation tube.
The relay ignition oil injection hole is provided with an angle alpha.
The angle alpha corresponds to the angle formed by the hot jet flow flame tongue of the main combustion chamber after passing through the turbine along the circumferential direction of the relay ignition oil injection hole.
The angle alpha of the relay ignition oil injection hole and the axial distance L between the boost starting oil supply main pipe and the stabilizer are determined by integrating the air flow speed and the fuel injection flow speed.
And the oil injection direction of the direct injection type oil injection hole is consistent with the air flow direction.
The evaporation tubes are distributed in a cross shape, a cavity is arranged at the cross-shaped intersection, and the partition plate is horizontally or vertically arranged in the cavity at the cross-shaped intersection to divide the cross-shaped cavity into two parts.
The height H of the evaporation tube is determined according to the oil supply distance between the starting oil supply nozzle and the stabilizer and the sputtering distance generated after the fuel oil enters the evaporation tube.
The invention has the beneficial effects that: on the premise of ensuring reliable connection and stress application of the thermal jet ignition of the stress application combustion chamber, the effect of no need of independently arranging a relay ignition nozzle is achieved, and the stress application starting oil supply main pipe is adjusted from a built-in type to an external type, so that a stabilizer is not involved in the disassembly and assembly of the stress application starting oil supply main pipe, the workload during assembly is reduced, and the manufacturability and the maintainability are improved.
Drawings
FIG. 1 is a schematic diagram of the afterburner thermal jet ignition principle;
FIG. 2 is a schematic diagram of the principle of the present invention;
FIG. 3 is a schematic structural diagram of the present invention
FIG. 4 is a schematic view of the structure of the force-start fuel rail of FIG. 3;
FIG. 5 is a schematic view of the structure of the stabilizer of FIG. 3;
FIG. 6 is a cross-sectional view taken along line A of FIG. 5;
in the figure: 1-boosting starting oil supply main pipe, 2-stabilizer, 3-pipeline, 4-oil spray rod, 5-annular stabilizer, 6-evaporating pipe, 7-clapboard and 8-radial stabilizer.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
Example 1
An external relay ignition and starting oil supply device as shown in fig. 3-6 comprises a plurality of boost starting oil supply main pipes 1 which are circularly distributed, wherein each boost starting oil supply main pipe 1 comprises a pipeline 3 and an oil spray rod 4 connected with the side wall of the pipeline 3, a plurality of direct injection type oil spray holes are arranged on the oil spray rod 4, and a relay ignition oil spray hole is arranged at any circumferential position of the pipeline 3; the stabilizer 2 comprises an annular stabilizer 5 connected with the end part of the pipeline 3 and a radial stabilizer 8 connected with the oil injection rod 4, and an evaporation pipe 6 is arranged in the radial stabilizer 8; a partition plate 7 is arranged in the evaporation tube 6, and the evaporation tube 6 is divided into two evaporation chambers by the partition plate 7; the oil spray rod 4 and the stabilizer 2 form an annular structure.
The oil spray rod 4 corresponds to the circumference of the evaporation tube 6.
The relay ignition oil injection hole is provided with an angle alpha, so that the injected fuel oil can effectively collide with the wall surface of the stabilizer 2, and the distribution range of the fuel oil is changed.
The angle alpha corresponds to the angle formed by the hot jet flow flame tongue of the main combustion chamber after passing through the turbine along the circumferential direction of the relay ignition oil injection hole.
The angle alpha of the relay ignition oil spray hole, the axial distance L between the boosting starting oil supply main pipe 1 and the stabilizer 2 are determined by integrating the air flow speed and the fuel oil injection flow speed.
And the oil injection direction of the direct injection type oil injection hole is consistent with the air flow direction.
The evaporation tubes 6 are distributed in a cross shape, a cavity is arranged at the cross-shaped intersection, and the partition plate 7 is horizontally or vertically arranged in the cavity at the cross-shaped intersection to divide the cross-shaped cavity into two parts, as shown in fig. 6.
The height H of the evaporation tube 6 is determined according to the oil supply distance between the starting oil supply nozzle and the stabilizer 2 and the sputtering distance generated after the fuel oil enters the evaporation tube.
The invention adjusts the position relation of the boosting starting oil supply main pipe and the stabilizer from built-in to external, so that the layout of the nozzle of the oil injection rod corresponds to the air inlet of the stabilizer, meanwhile, a hole is formed on the pipeline of the boosting starting oil supply main pipe, so that fuel oil sprayed out of the pipeline forms a certain included angle with the annular stabilizer, under the action of air flow, after the fuel oil track collides with the wall surface of the annular stabilizer, the reverse air flows to the upstream for distribution, thereby achieving the purpose of a relay nozzle and further igniting the hot jet flow flare transmitted from the main combustion chamber, as shown in figure 2.
Example 2
As mentioned above, the external relay ignition and starting oil supply device mainly comprises a boosting starting oil supply main pipe 1 and a stabilizer 2, wherein the boosting starting oil supply main pipe 1 comprises a pipeline 3 and an oil injection rod 4, and the stabilizer 2 comprises an annular stabilizer 5, an evaporation pipe 6, a partition plate 7 and a radial stabilizer 8.
The stress application starting oil supply main pipe 1 and the stabilizer 2 are distributed as shown in figure 3, the stress application starting oil supply main pipe 1 is distributed annularly, direct injection type oil injection holes are distributed on the oil injection rods 4, and the distribution of the oil injection rods 4 corresponds to the circumferential direction of the stabilizer 2.
The relay ignition oil injection hole is arranged on the pipeline 3 at a certain circumferential position of the boost starting oil supply main pipe 1, when an engine is to be switched on and boosted, the boost starting oil supply main pipe 1 starts to supply oil, a small part of fuel oil is sprayed out from the boost ignition oil injection hole according to a design angle alpha, and after the fuel oil is sprayed to the annular stabilizer 5, the fuel oil is distributed in a tapered shape towards the upstream, as shown in figure 4.
The circumferential position of the relay ignition oil spray hole needs to form a certain angle with a boosting ignition nozzle of the main combustion chamber, namely the circumferential position of the relay ignition oil spray hole needs to be ensured to correspond to the angle of a hot jet flow flame tongue of the main combustion chamber after passing through a turbine.
The diameter of the relay ignition fuel injection hole is 1-2 mm, fuel can be guaranteed to be injected in a certain liquid column form, namely the atomization form of the fuel injected out of the injection hole is controlled, in order to enable the fuel to be injected in the liquid column form, the diameter is relatively large, if the fuel with a small diameter is atomized in advance, the fuel cannot be effectively collided with the annular stabilizer and then is distributed in a countercurrent mode, and the fuel is distributed in the countercurrent mode after the fuel liquid column collision, and the purpose of crushing atomized fuel is also achieved; the design angle alpha of the relay ignition oil injection hole and the axial distance L between the starting oil supply main pipe and the stabilizer need to be designed by integrating the air flow speed and the fuel injection flow speed, and verification can be carried out through CFD simulation.
The circumferential distribution of the oil spray rod 4 corresponds to the evaporation pipe 6 of the stabilizer 2, wherein 2 direct injection type oil spray holes are distributed on the oil spray rod 4, and the oil spray direction of the oil spray holes is consistent with the air flow direction.
Specifically, in the evaporating pipe 6 in the fuel entering stabilizer 2, there is baffle 7 in the evaporating pipe intracavity for the fuel of 2 nozzle holes distributes respectively in 2 evaporating chambeies, and is preferred, and evaporating pipe 6 is the cross distribution, and the fuel forms the oil-gas mixture through "steamer effect" in evaporating pipe 6, and the oil-gas mixture distributes to circumference and radial along evaporating pipe 6 that the cross distributes, as shown in figure 6.
The direct injection type oil spray hole on the oil spray rod 4 is required to carry out a targeting test, namely, the fuel oil distribution can be controlled in a certain area within a certain axial distance, so that the fuel oil injection direction can meet the use requirement during normal work.
The height H of the evaporation tube 6 needs to be designed by considering the oil supply distance between a nozzle for starting the oil supply main pipe and the stabilizer and possible sputtering generated after fuel oil enters the evaporation tube, and the fuel oil can still be completely distributed in the evaporation tube after sputtering as much as possible.
The radial stabilizer 8, the annular stabilizer 5 and the evaporation tube 6 form an evaporative flame stabilizer, and the external boosting starting oil supply main pipe supplies oil to the evaporation tube of the stabilizer to realize circumferential and radial flame connection of flame and ignition of the boosting combustion chamber.
In conclusion, the invention has the following beneficial effects:
1. by means of the characteristic that the afterburner starts the oil supply main pipe to work simultaneously when the afterburner is ignited, the relay ignition main pipe is combined with the starting oil supply main pipe, and the aim of not independently designing the relay ignition main pipe is fulfilled;
2. the position relation between the thrust-boosting starting oil supply main pipe and the stabilizer is adjusted from built-in to external, so that the arrangement of the nozzle of the oil injection rod corresponds to the air inlet of the evaporative stabilizer, the stabilizer is not involved when the thrust-boosting starting oil supply main pipe is disassembled and assembled, the workload during assembly is reduced, and the manufacturability and the maintainability are improved;
3. through the design of the opening angle of the pipeline, the fuel sprayed by the pipeline forms a certain included angle with the annular stabilizer, and under the action of airflow, after the fuel track collides with the wall surface of the annular stabilizer, the fuel is distributed in a reverse airflow direction to the upstream, so that the purpose of a relay nozzle is achieved, and the hot jet flame tongue transmitted from the main combustion chamber is further ignited.
Claims (8)
1. The utility model provides an external relay ignition and start fuel feeding unit, is including being a plurality of thrust augmentation start fuel feeding house steward (1) of circular distribution, its characterized in that: the boosting starting oil supply main pipe (1) comprises a pipeline (3) and an oil spray rod (4) connected with the side wall of the pipeline (3), a plurality of direct injection type oil spray holes are formed in the oil spray rod (4), and a relay ignition oil spray hole is formed in any circumferential position of the pipeline (3); the stabilizer (2) comprises an annular stabilizer (5) connected with the end part of the pipeline (3) and a radial stabilizer (8) connected with the oil spray rod (4), and an evaporation pipe (6) is arranged in the radial stabilizer (8); a partition plate (7) is arranged in the evaporation tube (6), and the evaporation tube (6) is divided into two evaporation chambers by the partition plate (7); the oil spray rod (4) and the stabilizer (2) form an annular structure.
2. The external relay ignition and starting oil supply device as claimed in claim 1, wherein: the oil spraying rod (4) corresponds to the circumference of the evaporation tube (6).
3. The external relay ignition and starting oil supply device as claimed in claim 1, wherein: the relay ignition oil injection hole is provided with an angle alpha.
4. The external relay ignition and starting oil supply device according to claim 3, characterized in that: the angle alpha corresponds to the angle formed by the hot jet flow flame tongue of the main combustion chamber after passing through the turbine along the circumferential direction of the relay ignition oil injection hole.
5. The external relay ignition and starting oil supply device as set forth in claim 1, wherein: the angle alpha of the relay ignition oil injection hole and the axial distance L between the boost starting oil supply main pipe (1) and the stabilizer (2) are determined by integrating the air flow speed and the fuel injection flow speed.
6. The external relay ignition and starting oil supply device as set forth in claim 1, wherein: and the oil injection direction of the direct injection type oil injection hole is consistent with the air flow direction.
7. The external relay ignition and starting oil supply device as set forth in claim 1, wherein: the evaporation tubes (6) are distributed in a cross shape, a cavity is arranged at the cross-shaped intersection, and the partition plate (7) is horizontally or vertically arranged in the cavity at the cross-shaped intersection to divide the cross-shaped cavity into two parts.
8. The external relay ignition and starting oil supply device as set forth in claim 1, wherein: the height H of the evaporation tube (6) is determined according to the oil supply distance between the starting oil supply nozzle and the stabilizer (2) and the sputtering distance generated after fuel oil enters the evaporation tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210699332.8A CN114992674B (en) | 2022-06-20 | 2022-06-20 | External relay ignition and starting oil supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210699332.8A CN114992674B (en) | 2022-06-20 | 2022-06-20 | External relay ignition and starting oil supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114992674A true CN114992674A (en) | 2022-09-02 |
| CN114992674B CN114992674B (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210699332.8A Active CN114992674B (en) | 2022-06-20 | 2022-06-20 | External relay ignition and starting oil supply device |
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| CN (1) | CN114992674B (en) |
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|---|---|---|---|---|
| CN86108062A (en) * | 1985-11-25 | 1987-07-01 | 联合工艺公司 | Gas turbine engine augmentor |
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| US20020073788A1 (en) * | 2000-12-19 | 2002-06-20 | Hatley Kenneth John | Methods for robotically inspecting gas turbine combustion components |
| CN1538047A (en) * | 2003-03-13 | 2004-10-20 | ���չ�˾ | Augmentor |
| RU2347144C1 (en) * | 2007-06-20 | 2009-02-20 | Федеральное государственное унитарное предприятие "Центральный институт авиационного моторостроения имени П.И. Баранова" | Annular combustion chamber of gas turbine engine and method of its operation |
| CN105089784A (en) * | 2014-05-16 | 2015-11-25 | 天津纳祥科技有限公司 | Energy-efficient turbine fan |
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-
2022
- 2022-06-20 CN CN202210699332.8A patent/CN114992674B/en active Active
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| CN1042599A (en) * | 1987-11-05 | 1990-05-30 | 通用电气公司 | Gas-cooled flameholder assembly |
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| CN114992674B (en) | 2024-03-19 |
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