CN116771513A - Oil thrower disc capable of being used for lateral oil supply of baffling combustion chamber - Google Patents
Oil thrower disc capable of being used for lateral oil supply of baffling combustion chamber Download PDFInfo
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- CN116771513A CN116771513A CN202310535173.2A CN202310535173A CN116771513A CN 116771513 A CN116771513 A CN 116771513A CN 202310535173 A CN202310535173 A CN 202310535173A CN 116771513 A CN116771513 A CN 116771513A
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- oil
- fuel
- thrower
- nozzle
- slinger
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 24
- 239000000446 fuel Substances 0.000 claims abstract description 77
- 239000007921 spray Substances 0.000 claims abstract description 39
- 238000002347 injection Methods 0.000 claims abstract description 27
- 239000007924 injection Substances 0.000 claims abstract description 27
- 239000003595 mist Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000010963 304 stainless steel Substances 0.000 claims description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 165
- 238000005516 engineering process Methods 0.000 description 11
- 238000000889 atomisation Methods 0.000 description 7
- 239000010705 motor oil Substances 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The application relates to the field of oil throwers of turbine engines, and discloses an oil thrower capable of being used for lateral oil supply of a baffling combustion chamber, which comprises an oil thrower main body, an oil supply pipe, an oil injection hole and an oil injection nozzle, wherein a groove at the rear end of the oil thrower main body forms an oil conveying cavity structure, and a central oil conveying hole communicated with the oil conveying cavity is formed in the oil thrower main body; the oil supply pipe is connected with the oil spray nozzle, the oil spray nozzle is opposite to the oil conveying cavity, a plurality of oil spray holes are radially distributed on the periphery of the oil thrower body, and the oil spray holes and the oil spray nozzle are communicated with the oil conveying cavity. The application can improve the uniformity and sensitivity of fuel distribution of each oil spray hole of the oil thrower of the turbine engine, and can improve the oil leakage problem.
Description
Technical Field
The application relates to the field of oil throwers of turbine engines, and discloses a lateral oil supply oil thrower of a lateral oil supply engine, which can be used for a baffling combustion chamber.
Technical Field
Aiming at market demands such as centralized camping base power supply guarantee under field conditions, standby power supply guarantee in important places, high-power supply of a distributed energy system and the like, the WP11 engine is used as a gas generator of the 1MW mobile gas turbine power generation system. The research on the combined cooling heating power technology of the 1MW gas turbine fills the blank of the domestic 1 MW-level mobile power generation field. The project team of the WP11 engine and the local cooperation unit of Jiangxi provinces have sufficient result conversion and industry landing experience, and the efficient industry landing of the system can lead the lead in huge market space in the field. In the current severe international situation, the project is also developed to perform strategic technology and product reserves for possible large national trade easy barriers. The atomization technology of the lateral oil supply disc changes aviation kerosene of the original WP11 engine into 11G diesel oil, improves the applicability of a combustion chamber, and has great practical significance.
The public service machine becomes an important requirement, and the 11F large bypass ratio turbofan engine is one of the selectable domestic engines. The existing 11D engine adopts an axial center oil supply technology.
The turbine engine oil thrower is a structure which can do work on fuel oil in a mode of rotating the oil thrower, so that the fuel oil can obtain higher rotational kinetic energy and is sprayed out at a high speed through an oil thrower oil hole, and the fuel oil is atomized. The traditional vortex engine adopts an oil supply mode as a central oil supply, namely, fuel is introduced into a fuel guide pipe rotating along with the high speed of the engine shaft from a static fuel pipe seat at a speed reducer casing, and then is introduced into an oil thrower disc.
The fuel supply pipeline of the fuel supply mode is long, so that the change of the fuel flow rate of the fuel thrower disc system is reflected slowly. Because the fuel is tightly sealed by the surface quality of the two end surfaces which are in contact with each other and rotate and the sealing ring, serious oil leakage problems exist at the interface of the fuel guide pipe which enters the high-speed rotation from the static fuel pipe seat and along the road. The fuel distribution of each oil spray hole is uneven, and carbon deposition is easy to occur.
Compared with the prior art, the lateral oil supply technology can improve the structural strength and improve the performance of the oil thrower, so that the lateral oil supply oil thrower atomization technology is one of key technologies for improving the performance of the 11F large-bypass-ratio turbofan engine and the aeroderivative combustion engine, and the research and the application of the lateral oil supply oil thrower atomization technology have important economic benefits, practical application significance and social significance.
The application can improve the proportions of domestic general aviation, energy power and related products and the share of domestic and foreign markets, promote independent research and development to meet the requirements of the fields of transportation, energy, national defense, military and the like, aim at huge market potential, promote the development of related industry chains, obtain mature lateral oil supply oil slinger atomization design technology, apply the technology to the development of aeroengine combustion chambers and improve the core competitiveness of related products.
Disclosure of Invention
Based on the technical problems, the oil supply mode and the main body part structure are improved on the basis of the traditional oil thrower, and the oil thrower capable of being used for lateral oil supply of the baffling combustion chamber is provided, so that the problems of fuel distribution uniformity, fuel distribution sensitivity and oil leakage of oil thrower pipelines of all oil spray holes can be improved.
In order to solve the technical problems, the application adopts the following technical scheme:
an oil thrower for lateral oil supply of a baffling combustion chamber comprises an oil thrower body, an oil supply pipe, an oil spray hole and an oil spray nozzle. The front end of the oil thrower body is a shaft body, the rear end of the oil thrower body is a disc body, and the material can be 30CrMoA; the groove at the rear end of the oil thrower body forms an oil delivery cavity structure, and the oil thrower body is provided with oil injection holes which are communicated with the oil delivery cavity and have different angles; the oil supply pipe is connected with the oil spray nozzle, the oil supply pipe and the oil spray nozzle are made of 304 stainless steel, wherein the front section of the oil supply pipe is a straight pipe, the rear end of the oil supply pipe is a bent pipe, the oil spray nozzle is opposite to the oil conveying cavity, a plurality of oil spray holes are radially distributed on the periphery of the oil thrower body, and the oil spray holes and the oil spray nozzle are communicated with the oil conveying cavity.
As a preferable mode, the oil injection direction of the oil injection nozzle is parallel to the front section shaft body of the oil thrower and is opposite to the central line of the oil conveying cavity, a distance is ensured between the oil injection nozzle and the oil thrower body, so that the oil injection nozzle and the oil thrower body are free from collision, and the fuel is ensured to be injected into the oil conveying cavity.
As a preferable mode, the oil spraying holes are distributed at equal intervals on the periphery of the oil slinger main body, and different deflection angles are distributed in a staggered mode.
In a preferred embodiment, the fuel injector is screwed to the fuel supply line, the fuel supply line being deflected by 90 °, the fuel injector exhibiting a constriction.
As a preferred mode, the oil jet has two groups of different deflection angles of + -20 DEG-24 DEG and a proper diameter capable of preventing the oil jet from being blocked.
As a preferred mode, the number of the oil spray holes in each group is 6 and 12 respectively.
Compared with the traditional technology, the application has the beneficial effects that:
the traditional oil thrower of the gas turbine engine (including vortex shaft type, vortex paddle type and jet type) has the technical defects of uneven flow distribution of different oil spray holes, slow flow reaction and serious oil leakage problem, so that the working performance of the engine is defective, the fuel waste is serious under certain conditions, and the application range of the engine is influenced.
The application improves the oil supply mode of the traditional oil thrower, adds the oil supply pipe and the oil nozzle, designs the quantity deflection angle and the position of the oil spray holes, improves the fuel distribution uniformity and the fuel distribution sensitivity of each oil spray hole and the oil leakage problem of the oil thrower pipeline, enlarges the application range of the engine and improves the performance of the engine.
The application changes the oil supply mode of the combustion chamber of the vortex theory engine and adopts the lateral oil supply design. Because of the problems of improving the fuel distribution and the fuel sensitivity of the fuel injection hole, the reasonable oil mist distribution of the fuel in the combustion chamber under different working conditions is ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present application.
Fig. 2 is a schematic view of the rear end of the oil slinger.
Fig. 3 is a schematic diagram of the structure of the oil supply pipe.
Fig. 4 is a schematic view of the structure of the fuel supply nozzle.
Wherein, 1 oil slinger main part, 2 oil feed pipe, 3 fuel sprayer, 4 fuel sprayer, 5 oil delivery chamber.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.
FIGS. 1-4 are schematic illustrations of the construction of a turbine engine oil slinger in accordance with certain embodiments of the present application, and the turbine engine oil slinger in accordance with the present application will be described with reference to FIGS. 1-4. It should be noted that fig. 1-4 are by way of example only and are not limiting as to the particular shape and configuration of the turbine engine oil slinger.
Referring to fig. 1 to 4, in the present embodiment, a turbine engine oil slinger comprises an oil slinger body 1 and an oil injection hole 4, wherein the rear end of the oil slinger body 1 forms an oil conveying cavity 5; the oil spray holes 4 are radially distributed on the periphery of the oil slinger main body 1, and the oil spray holes 4 are communicated with the oil conveying cavity 5. The oil supply pipe 2 is connected with the oil nozzle 3, and the oil nozzle 3 is opposite to the oil conveying cavity 5.
Specifically, one end of the oil supply pipe 2 is connected with an oil supply system of the turbine engine, and the other end of the oil supply pipe 2 is connected with the oil nozzle 3 through threads and deflects by 90 degrees. So that the contracting nozzle is opposite to the central line of the oil conveying cavity, and keeps a proper distance with the rear end of the oil thrower to ensure that the component is not contacted and can just jet the fuel into the oil conveying cavity.
In this embodiment, the presence of a long supply line for fuel to the center supply oil slinger of a conventional turbine engine is known to result in a slow reflection of the change in fuel flow by the oil slinger system. Because the fuel is tightly sealed by the surface quality of the two end surfaces which are in contact with each other and rotate and the sealing ring, serious oil leakage problems exist at the interface of the fuel guide pipe which enters the high-speed rotation from the static fuel pipe seat and along the road. The fuel distribution of each oil spray hole is uneven, and after long-term use, the problems of carbon deposition and the like are easy to occur. In order to solve the problem, an oil supply pipe 2 and an oil nozzle 3 are added, and fuel oil is directly input into the oil thrower through other pipelines, namely, a lateral oil supply mode is adopted.
With this structure, the fuel flows from the oil supply system of the turbomachinery into the oil supply pipe 2, and then flows into the oil jet 3 screwed thereto along the direction change of the oil supply pipe 2. Fuel is injected from the fuel injector 3 due to pressure, enters the oil delivery chamber 5 of the high-speed rotating oil slinger body 1, and is accelerated to rotate. Finally, under the centrifugal force formed by high rotation speed, the oil flows into the oil spraying holes 4 connected with the oil spraying holes radially, a horn-shaped thin oil film is formed during spraying, then the oil film collides with air to form a plurality of small particle oil drops, oil mist is formed, and finally the oil mist is burnt in a high-temperature combustion chamber.
Therefore, in the oil slinger structure of the embodiment, the oil supply line is peeled off from the oil slinger body, the oil supply pipe 2 and the oil nozzle 3 are arranged, and a lateral oil supply mode is adopted. And through the reasonable arrangement of the positions of the oil spray holes 4, the proper size and the injection angle of the diameter of the oil spray holes 4 are determined, so that the atomization quality of engine fuel is greatly improved, and the problems of a traditional central oil supply mode are relieved.
The specific working process is that the oil thrower body 1 is connected with the rotating shaft of the vortex engine to rotate at a high speed, the fuel system sends fuel to a proper fuel injection position through the fuel supply pipe 2 and pushes the fuel injection nozzle 3, the contractive fuel injection nozzle 3 promotes the injection speed of the fuel, and the fuel is precisely injected into the fuel delivery cavity 5. The fuel is sprayed out from the fuel spray nozzle 3 and enters the oil delivery cavity 5 of the oil thrower body 1 rotating at high speed. The fuel is accelerated in the oil thrower rotating at high speed, and finally flows into two groups of oil spray holes 4 with different angles connected with the oil thrower through centrifugal force to be sprayed out at high speed. The fuel collides with air in the engine combustion chamber to form small-particle oil mist (atomized) and burns.
Due to the number, diameter, angle and other related factors of the oil spray holes 4, the atomization quality of the oil mist and the rationality of the distribution of the oil mist in the combustion chamber can be affected. Therefore, in order to enable the oil thrower to have better atomization effect on fuel, the number and the angle of the oil spray holes 4 can be specifically designed according to the oil supply requirement of the turbine engine, and the diameter of the oil spray holes 4 can be reasonably designed.
Specifically, the number of the oil spraying holes 4 is 6-12, and the deflection angle is plus or minus 20-24 degrees.
The application reasonably designs the diameter injection angle and the number of the radial oil injection holes 4, and avoids the problem of fuel blockage in the injection holes as much as possible. In addition, the scheme also considers the problem that fuel particles are reasonably distributed in the space of the combustion chamber, and can ensure that fuel forms reasonable distribution meeting the combustion requirement in the combustion chamber, so that oil mist is better combusted in the combustion chamber.
The proposal also carries out reasonable design and simulation on the fuel supply pipe and the fuel spray nozzle, and ensures that the flow loss of the fuel in the pipe is in a reasonable range.
In this embodiment, the oil spraying holes 4 are distributed at equal intervals on the periphery of the oil thrower body 1, and different deflection angles are staggered, so that the fuel can be sprayed out of the oil thrower body 6 more uniformly, and the oil mist forming position in the combustion chamber is more reasonable.
In this embodiment, the oil nozzle 3 is fixed to the oil supply pipe 2 through a threaded hole, and the oil supply pipe 2 and the oil nozzle 3 are in a detachable structure. In practical cases, the device is convenient to overhaul and maintain.
In this embodiment, the fuel supply pipe is composed of a straight pipe and a curved pipe, and the connection part thereof is welded to enable the fuel to be conveyed to a proper position for ejection.
The above is an embodiment of the present application. The foregoing embodiments and the specific parameters of the embodiments are only for clarity of description of the application, and are not intended to limit the scope of the application, which is defined by the appended claims, and all equivalent structural changes made by the application of the description and drawings of the application are intended to be included in the scope of the application.
Claims (10)
1. An oil slinger for lateral oil supply to a baffled combustor, comprising: comprises an oil thrower body, an oil supply pipe, an oil injection hole and an oil injection nozzle; the front end of the oil thrower main body is a shaft body, and the rear end is a disc body; the groove at the rear end of the oil thrower body forms an oil delivery cavity structure, and the oil thrower body is provided with oil injection holes which are communicated with the oil delivery cavity and have different angles; the oil supply pipe is connected with the oil spray nozzle, wherein the front section of the oil supply pipe is a straight pipe, the rear end of the straight pipe is a bent pipe, the oil spray nozzle is opposite to the oil conveying cavity, a plurality of oil spray holes are radially distributed on the periphery of the oil thrower body, and the oil spray holes and the oil spray nozzle are communicated with the oil conveying cavity.
2. A laterally fed oil slinger for a baffled combustor as set forth in claim 1 wherein: the oil injection direction of the oil injection nozzle is parallel to the front section shaft body of the oil thrower, is opposite to the central line of the oil conveying cavity, and ensures a distance with the oil thrower body, so that the oil injection nozzle and the oil thrower body are free from collision and the fuel is ensured to be injected into the oil conveying cavity.
3. A laterally fed oil slinger for baffling a combustion chamber as in claim 1 or 2 wherein: the oil spraying holes are distributed at equal intervals on the periphery of the oil slinger main body, and different deflection angles are distributed in a staggered mode.
4. A laterally fed oil slinger for baffling a combustion chamber as in claim 1 or 2 wherein: the oil nozzle is connected with the oil supply pipe through threads, the joint of the oil supply pipe deflects 90 degrees, and the oil nozzle is in a contracted shape.
5. A laterally fed oil slinger for a baffled combustor as set forth in claim 1 wherein: the oil spraying holes are provided with two groups of different deflection angles of +/-20-24 degrees.
6. A laterally fed oil slinger for baffling a combustion chamber as defined in claim 5 wherein: the number of the oil spray holes in each group is 6 and 12 respectively.
7. A laterally fed oil slinger for baffling a combustion chamber as in claim 1 or 2 wherein: one end of the oil supply pipe is connected with an oil supply system of the turbine engine, and the other end of the oil supply pipe is connected with the oil nozzle through threads and deflects by 90 degrees; so that the contracting nozzle is opposite to the central line of the oil conveying cavity, and keeps a proper distance with the rear end of the oil thrower to ensure that the component is not contacted and can just jet the fuel into the oil conveying cavity.
8. A laterally fed oil slinger for a baffled combustor as set forth in claim 1 wherein: the material of the oil thrower is selected to be 30CrMoA.
9. A laterally fed oil slinger for a baffled combustor as set forth in claim 1 wherein: the oil supply pipe and the oil nozzle are made of 304 stainless steel.
10. A method of operating a laterally fed oil slinger for a baffled combustor, comprising: the working process is as follows: the fuel system sends fuel to a proper fuel injection position through the fuel supply pipe and pushes the fuel injection nozzle, and the contractive fuel injection nozzle promotes the injection speed of the fuel and injects the fuel into the fuel delivery cavity accurately; fuel is sprayed out from the oil spray nozzle and enters an oil delivery cavity of the oil thrower body 1 rotating at high speed; the fuel is accelerated in the oil thrower rotating at high speed, and finally flows into two groups of oil spray holes with different angles connected with the oil thrower through centrifugal force to be sprayed out at high speed; the fuel collides with air in the engine combustion chamber to form small-particle oil mist, and burns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310535173.2A CN116771513A (en) | 2023-05-12 | 2023-05-12 | Oil thrower disc capable of being used for lateral oil supply of baffling combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310535173.2A CN116771513A (en) | 2023-05-12 | 2023-05-12 | Oil thrower disc capable of being used for lateral oil supply of baffling combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116771513A true CN116771513A (en) | 2023-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310535173.2A Pending CN116771513A (en) | 2023-05-12 | 2023-05-12 | Oil thrower disc capable of being used for lateral oil supply of baffling combustion chamber |
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| CN (1) | CN116771513A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070234725A1 (en) * | 2006-03-29 | 2007-10-11 | Honeywell International, Inc. | Counterbalanced fuel slinger in a gas turbine engine |
| CN204041243U (en) * | 2014-07-03 | 2014-12-24 | 中国航空动力机械研究所 | Gas turbine disc |
| CN110513721A (en) * | 2019-09-19 | 2019-11-29 | 广东省航空航天装备技术研究所 | Bluff body structure surely fires combustion chamber |
| CN111473363A (en) * | 2020-06-02 | 2020-07-31 | 中国科学院工程热物理研究所 | Radially-partitioned oil thrower |
| CN112963866A (en) * | 2021-04-09 | 2021-06-15 | 西北工业大学 | Novel combination formula disc |
| CN115451429A (en) * | 2022-07-29 | 2022-12-09 | 中科航星科技有限公司 | Head oil supply and nozzle structure of oil thrower disc combustion chamber |
-
2023
- 2023-05-12 CN CN202310535173.2A patent/CN116771513A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070234725A1 (en) * | 2006-03-29 | 2007-10-11 | Honeywell International, Inc. | Counterbalanced fuel slinger in a gas turbine engine |
| CN204041243U (en) * | 2014-07-03 | 2014-12-24 | 中国航空动力机械研究所 | Gas turbine disc |
| CN110513721A (en) * | 2019-09-19 | 2019-11-29 | 广东省航空航天装备技术研究所 | Bluff body structure surely fires combustion chamber |
| CN111473363A (en) * | 2020-06-02 | 2020-07-31 | 中国科学院工程热物理研究所 | Radially-partitioned oil thrower |
| CN112963866A (en) * | 2021-04-09 | 2021-06-15 | 西北工业大学 | Novel combination formula disc |
| CN115451429A (en) * | 2022-07-29 | 2022-12-09 | 中科航星科技有限公司 | Head oil supply and nozzle structure of oil thrower disc combustion chamber |
Non-Patent Citations (1)
| Title |
|---|
| 叶宇隆，金捷，刘睿等: "直连式甩油盘非均匀流动特性", 北京航空航天大学学报, vol. 45, no. 8, 31 August 2019 (2019-08-31), pages 1560 - 1568 * |
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