CN114992674B - External relay ignition and starting oil supply device - Google Patents
External relay ignition and starting oil supply device Download PDFInfo
- Publication number
- CN114992674B CN114992674B CN202210699332.8A CN202210699332A CN114992674B CN 114992674 B CN114992674 B CN 114992674B CN 202210699332 A CN202210699332 A CN 202210699332A CN 114992674 B CN114992674 B CN 114992674B
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- Prior art keywords
- oil
- oil supply
- stabilizer
- pipeline
- supply device
- 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.)
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- 239000003381 stabilizer Substances 0.000 claims abstract description 66
- 238000002347 injection Methods 0.000 claims abstract description 54
- 239000007924 injection Substances 0.000 claims abstract description 54
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 238000001704 evaporation Methods 0.000 claims description 42
- 230000008020 evaporation Effects 0.000 claims description 28
- 239000007921 spray Substances 0.000 claims description 20
- 239000000446 fuel Substances 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 3
- 238000004544 sputter deposition Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 95
- 239000000295 fuel oil Substances 0.000 abstract description 21
- 238000011144 upstream manufacturing Methods 0.000 abstract description 3
- -1 and simultaneously Substances 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method 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
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
Abstract
The invention provides an external relay ignition and starting oil supply device which comprises a plurality of stress starting oil supply manifolds distributed in a circular shape, wherein each stress starting oil supply manifold comprises a pipeline and an oil injection rod connected with the side wall of the pipeline, the oil injection rod is provided with a plurality of direct injection oil injection holes, and any one circumferential position of the pipeline is provided with a relay ignition oil injection hole. The invention adjusts the position relation between the forced starting oil supply device and the stabilizer from internal to external, so that the nozzle layout of the oil injection rod corresponds to the air inlet of the evaporative stabilizer, and simultaneously, holes are formed on the pipeline of the oil supply device, so that the fuel oil sprayed out of 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 reverse air flow is distributed upstream, thereby achieving the purpose of relaying the nozzle and further igniting the hot jet flame transferred 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 aeroengine design.
Background
The basic principle of the ignition method is that 1 direct injection nozzle is arranged in the main combustion, when the stress signal is connected, quantitative fuel oil is injected through the nozzle to form a flame of the thermal jet, and the flame passes through the turbine to reach the main stabilizer of the stress combustion chamber. At the moment, the fuel oil fed by the forced starting fuel supply device is received in the evaporation tube of the main stabilizer, the fuel oil is dispersed radially and circumferentially by the evaporation tube, a fuel-air mixture is formed in the reflow region of the stabilizer, and after a flame formed by the hot jet reaches the stabilizer, the fuel oil in the reflow region is ignited, so that flame combination and flame transfer in the afterburner are realized, and the afterburner is ignited. However, since the flame propagation length is long because the flame of the hot jet ignition needs to pass through the turbine to reach the afterburner stabilizer, a relay ignition nozzle is generally arranged at the outer culvert casing at the propagation intermediate distance, so that the flame ejected from the main combustion chamber extends the propagation distance to reach the downstream stabilizer, as shown in fig. 1. Therefore, when the afterburner of the evaporative stabilizer is connected to apply force, the starting oil supply device is generally arranged in the evaporating pipe of the stabilizer so as to form a proper oil-gas mixture in the evaporating pipe, but when the built-in starting oil supply device is disassembled, the components such as the stabilizer are involved, so that the problems of large maintenance 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 aims of no need of independently arranging a relay ignition nozzle and no relation to a stabilizer when a stress starting oil supply main pipe is disassembled and assembled, and is convenient to assemble and excellent in maintainability on the premise of ensuring that the thermal jet ignition of a afterburner is reliably connected with stress application.
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 stress starting oil supply manifolds distributed in a circular shape, wherein each stress starting oil supply manifold comprises a pipeline and an oil injection rod connected with the side wall of the pipeline, the oil injection rod is provided with a plurality of direct injection oil injection holes, and any circumferential position of the pipeline is provided with a relay ignition oil injection hole; 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 plate is arranged in the evaporation tube and divides the evaporation tube into two evaporation chambers; the oil injection rod and the stabilizer form an annular structure.
The oil injection rod corresponds to the periphery of the evaporation tube.
The relay ignition oil spray hole is provided with an angle alpha.
The circumferential positions of the angle alpha and the relay ignition oil spray hole correspond to the angle formed by the hot jet flame of the main combustion chamber after passing through the turbine.
And the angle alpha of the relay ignition oil spray hole and the axial distance L between the forced starting oil supply main pipe and the stabilizer are determined by combining the air flow speed and the fuel injection flow speed.
The oil injection direction of the direct injection type oil injection hole is consistent with the air flow direction.
The evaporation pipes 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 evaporating pipe 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 enters the evaporating pipe.
The invention has the beneficial effects that: under the premise of ensuring that the thermal jet ignition of the afterburner is reliably connected with the boosting, the effect of not needing to independently arrange a relay ignition nozzle is achieved, and meanwhile, the boosting start oil supply main pipe is adjusted from the built-in type to the external type, so that a stabilizer is not involved in the dismounting of the boosting start oil supply main pipe, the workload during assembly is reduced, and the manufacturability and the maintainability are improved.
Drawings
FIG. 1 is a schematic illustration of afterburner thermal jet ignition principle;
FIG. 2 is a schematic diagram of the present invention;
FIG. 3 is a schematic view of the structure of the present invention
FIG. 4 is a schematic illustration of the structure of the power start oil supply manifold 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 the direction A in FIG. 5;
in the figure: the device comprises a 1-forced starting oil supply main pipe, a 2-stabilizer, a 3-pipeline, a 4-oil injection rod, a 5-annular stabilizer, a 6-evaporation pipe, a 7-partition plate and an 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 above.
Example 1
The external relay ignition and starting oil supply device as shown in figures 3-6 comprises a plurality of stress starting oil supply main pipes 1 which are distributed circularly, wherein each stress starting oil supply main pipe 1 comprises a pipeline 3 and an oil injection rod 4 connected with the side wall of the pipeline 3, a plurality of direct injection oil injection holes are formed in the oil injection rod 4, and relay ignition oil injection holes are 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 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 partition plate 7 divides the evaporation tube 6 into two evaporation chambers; the oil injection rod 4 and the stabilizer 2 form an annular structure.
The oil spraying rod 4 corresponds to the circumference of the evaporation tube 6.
The relay ignition oil spray hole is provided with an angle alpha, so that the sprayed fuel can effectively collide with the wall surface of the stabilizer 2, and the distribution range of the fuel is changed.
The circumferential positions of the angle alpha and the relay ignition oil spray hole correspond to the angle formed by the hot jet flame of the main combustion chamber after passing through the turbine.
The angle alpha of the relay ignition oil spray hole and the axial distance L between the forced starting oil supply main pipe 1 and the stabilizer 2 are determined by combining the air flow speed and the fuel jet flow speed.
The oil injection direction of the direct injection type oil injection hole is consistent with the air flow direction.
The evaporating pipes 6 are distributed in a cross shape, a cavity is arranged at the cross-shaped intersection, and the partition plates 7 are 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 start-up oil supply nozzle and the stabilizer 2 and the splash distance generated after the fuel enters the evaporation tube.
The invention adjusts the position relation between the stress starting oil supply main pipe and the stabilizer from internal to external, so that the nozzle layout of the oil injection rod corresponds to the air inlet of the stabilizer, and simultaneously, holes are formed on the pipeline of the stress starting oil supply main pipe, so that the fuel oil sprayed out of the pipeline forms a certain included angle with the annular stabilizer, and under the action of air flow, after the fuel oil track collides with the wall surface of the annular stabilizer, the reverse air flow is distributed upstream, thereby achieving the purpose of relaying the nozzle, and further igniting the hot jet flame transferred from the main combustion chamber, as shown in figure 2.
Example 2
As described above, the external relay ignition and starting oil supply device mainly comprises a stress starting oil supply main pipe 1 and a stabilizer 2, wherein the stress 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 7 and a radial stabilizer 8.
The distribution of the stress starting oil supply main pipe 1 and the stabilizer 2 is shown in figure 3, the stress starting oil supply main pipe 1 is distributed in a ring shape, the oil injection rod 4 is distributed with direct injection type oil injection holes, and the distribution of the oil injection rod 4 corresponds to the circumference of the stabilizer 2.
The pipeline 3 at a certain circumferential position of the forced starting oil supply main pipe 1 is provided with a relay ignition oil spray hole, when the engine is about to be started for forced application, the forced starting oil supply main pipe 1 starts oil supply, a small part of fuel oil is sprayed out of the forced ignition oil spray hole according to a design angle alpha, and after the fuel oil is sprayed to the ring stabilizer 5, the fuel oil is distributed upwards in a conical manner, as shown in figure 4.
The circumferential position of the relay ignition oil spray hole needs to form a certain angle with the booster 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 the main combustion chamber hot jet flame after passing through the turbine.
The diameter of the relay ignition oil spraying hole is between 1 and 2mm, so that the fuel oil can be sprayed in a certain liquid column form, namely, the atomization form when the fuel oil is sprayed out of the spray hole is required to be controlled, in order to ensure that the fuel oil is sprayed in the liquid column form, the diameter is relatively larger, if the fuel oil with smaller diameter is atomized in advance, the fuel oil cannot be distributed in countercurrent after being effectively collided with the annular stabilizer, and the purpose of reversely distributing the fuel oil and crushing and atomizing the fuel oil is achieved after the collision of the fuel oil liquid column; the design angle alpha of the relay ignition oil spray hole and the axial distance L between the starting oil supply main pipe and the stabilizer are designed by integrating the air flow speed and the fuel injection flow speed, and can be verified by CFD simulation.
The circumferential distribution of the oil spray rod 4 corresponds to the evaporation tube 6 of the stabilizer 2, wherein 2 direct injection 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, the fuel enters the evaporating tube 6 in the stabilizer 2, and the partition 7 is arranged in the evaporating tube cavity, so that the fuel of 2 fuel injection holes is respectively distributed in 2 evaporating cavities, preferably, the evaporating tube 6 is in cross-shaped distribution, the fuel forms an oil-gas mixture in the evaporating tube 6 through a steamer effect, and the oil-gas mixture is distributed along the evaporating tube 6 in the cross-shaped distribution in the circumferential direction and the radial direction, as shown in fig. 6.
The direct injection type oil injection hole on the oil injection rod 4 is required to carry out a targeting test, namely, the fuel distribution in a certain axial distance can be controlled in a certain size area, so that the fuel injection direction can meet the use requirement during normal operation.
The height H of the evaporation tube 6 is designed in consideration of the oil supply distance between the nozzle and the stabilizer of the forced starting oil supply main pipe and the possible splash generated after the fuel enters the evaporation tube, so that the fuel can be still completely distributed in the evaporation tube after being splashed as much as possible.
The radial stabilizer 8, the annular stabilizer 5 and the evaporating pipe 6 form an evaporative flame stabilizer, and the external forced starting oil supply main pipe supplies oil to the evaporating pipe of the stabilizer to realize flame circumferential and radial flame combination and ignition of the forced combustion chamber.
In summary, the invention has the following beneficial effects:
1. by means of the characteristic that the afterburner starting oil supply main pipe works simultaneously when the afterburner ignites, the relay ignition main pipe is combined with the starting oil supply main pipe, so that the purpose of not needing to design the relay ignition main pipe independently is achieved;
2. the position relation between the stress starting oil supply main pipe and the stabilizer is adjusted from internal to external, so that the nozzle layout of the oil injection rod corresponds to the air inlet of the evaporative stabilizer, the stabilizer is not involved in the disassembly and assembly of the stress starting oil supply main pipe, the workload in the assembly is reduced, and the manufacturability and the maintainability are improved;
3. through the design of the opening angle of the pipeline, the fuel oil sprayed out of the pipeline forms a certain included angle with the annular stabilizer, and under the action of air flow, after the fuel oil track collides with the wall surface of the annular stabilizer, the reverse air flow is distributed upstream, so that the purpose of the relay nozzle is achieved, and the hot jet flame transmitted from the main combustion chamber is further ignited.
Claims (7)
1. An external relay ignition and start oil supply device comprises a plurality of stress start oil supply main pipes (1) which are distributed circularly, and is characterized in that: the forced starting oil supply main pipe (1) comprises a pipeline (3) and an oil injection rod (4) connected with the side wall of the pipeline (3), wherein the oil injection rod (4) is provided with a plurality of direct injection oil injection holes, and any circumferential position of the pipeline (3) is provided with a relay ignition oil injection hole; 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 board (7) is arranged in the evaporation pipe (6), and the partition board (7) divides the evaporation pipe (6) into two evaporation chambers; the oil injection rod (4) and the stabilizer (2) form an annular structure; the evaporation pipes (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.
2. The external relay ignition and starting oil supply device as defined in claim 1, wherein: the oil spraying rod (4) corresponds to the evaporation tube (6) in the circumferential direction.
3. External relay point as claimed in claim 1Fire and start oil supply unit, its characterized in that: the relay ignition oil spray hole is provided with an angle。
4. The external relay ignition and starting oil supply device as claimed in claim 3, wherein: said angle isThe circumferential position of the relay ignition oil spray hole corresponds to the angle formed by the hot jet flame of the main combustion chamber after passing through the turbine.
5. The external relay ignition and starting oil supply device as defined in claim 1, wherein: the angle of the relay ignition oil spray holeAnd the axial distance L between the forced starting oil supply main pipe (1) and the stabilizer (2) is determined by combining the air flow speed and the fuel jet flow speed.
6. The external relay ignition and starting oil supply device as defined in claim 1, wherein: 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 defined 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 the fuel 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 CN114992674A (en) | 2022-09-02 |
| CN114992674B true CN114992674B (en) | 2024-03-19 |
Family
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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 |
Country Status (1)
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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 |
| CN1042599A (en) * | 1987-11-05 | 1990-05-30 | 通用电气公司 | Gas-cooled flameholder assembly |
| 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 |
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| US6532840B2 (en) * | 2000-12-19 | 2003-03-18 | General Electric Company | Methods for robotically inspecting gas turbine combustion components |
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| CN114992674A (en) | 2022-09-02 |
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