CN110939516B - Oil cutting device with protective valve - Google Patents
Oil cutting device with protective valve Download PDFInfo
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- CN110939516B CN110939516B CN201911151936.3A CN201911151936A CN110939516B CN 110939516 B CN110939516 B CN 110939516B CN 201911151936 A CN201911151936 A CN 201911151936A CN 110939516 B CN110939516 B CN 110939516B
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- Prior art keywords
- oil
- valve
- spring
- spring seat
- cutting
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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
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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
- F02C7/232—Fuel valves; Draining valves or systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
The embodiment of the invention provides an oil cutting device with a protective valve, which comprises the protective valve arranged on an oil cutting way, wherein the first end of the protective valve is communicated with a main oil way through the oil cutting way, the second end of the protective valve is communicated with an oil return way through the oil cutting way, the protective valve comprises a shell 1, a lining 2, an oil separating valve 3, a spring seat pin 4 and a spring 5, wherein: the shell 1 is a hollow tubular structure, a spring seat nail 4 is arranged at the upper end of the shell 1, and a bushing 2 is arranged at the lower end of the inner wall of the shell 1; the spring seat nail 4 is of a T-shaped structure, the upper end of the spring seat nail 4 is fixedly connected with the upper end of the shell 1, and the lower end of the spring seat nail 4 is of a columnar structure; the lower end of the spring seat pin 4 penetrates through the spring 5, one end of the spring 5 props against the spring seat pin 4, and the other end of the spring 5 props against the oil distribution valve 3; the oil distributing valve 3 is arranged in the bush 2, and the oil distributing valve 3 can move up and down in the bush 2 under the action of the elastic force and the oil pressure of the spring 5.
Description
Technical Field
The invention belongs to the field and particularly relates to an oil cutting device with a protective valve.
Background
In order to quickly enter the working state of the aircraft engine during starting, the aircraft engine is in a fuel-rich starting mode, namely fuel is supplied to a combustion chamber of the engine slightly more than required during starting of the engine. In the process of starting the engine rich, in order to prevent the temperature of the gas in front of the turbine of the engine from being over-temperature, an oil cutting oil way is generally designed, certain fuel oil is returned through an electromagnetic valve, and the use safety of the engine is ensured.
After an engine enters a flight working state from a starting state, if an oil way is cut to generate an interference signal, an oil cutting phenomenon can be generated in the flight state of an airplane, the oil supply quantity of the engine is reduced, the power of the engine is reduced, and the use safety of the airplane is influenced.
Disclosure of Invention
In order to solve the technical problem, the invention provides an oil cutting device with a protective valve, which can normally cut oil in the starting process of an engine and forbid oil cutting of an oil cutting oil path after the engine enters a flight working state.
In order to achieve the purpose of the invention, the invention provides an oil cutting device with a protective valve, which comprises the protective valve arranged on an oil cutting path, wherein the first end of the protective valve is communicated with a main oil path through the oil cutting path, the second end of the protective valve is communicated with an oil return path through the oil cutting path, the protective valve comprises a shell 1, a bush 2, an oil distributing valve 3, a spring seat pin 4 and a spring 5, wherein:
the shell 1 is of a hollow tubular structure, a spring seat nail 4 is arranged at the upper end of the shell 1, and a bushing 2 is arranged at the lower end of the inner wall of the shell 1; the spring seat nail 4 is of a T-shaped structure, the upper end of the spring seat nail 4 is fixedly connected with the upper end of the shell 1, and the lower end of the spring seat nail 4 is of a columnar structure; the lower end of the spring seat pin 4 penetrates through the spring 5, one end of the spring 5 props against the spring seat pin 4, and the other end of the spring 5 props against the oil distribution valve 3; the oil distributing valve 3 is arranged in the bush 2, and the oil distributing valve 3 can move up and down in the bush 2 under the action of the elastic force and the oil pressure of the spring 5.
Optionally, when the oil pressure of the oil distribution valve 3 is smaller than a preset pressure value, the oil distribution valve 3 is communicated with the oil cutting way; when the oil pressure of the oil distributing valve 3 is greater than or equal to a preset pressure value, the oil distributing valve 3 is disconnected with the oil cutting way.
Optionally, the device further comprises a solenoid valve 6, and the solenoid valve 6 is located on the oil cutting path at the second end of the protection valve;
one side of the oil distributing valve 3 is provided with a first oil hole, one side of the bush 2 is provided with a second oil hole, when the oil distributing valve 3 moves in the bush 2 to communicate the first oil hole and the second oil hole, fuel oil flows through a first connecting oil path through the first oil hole and the second oil hole to reach the electromagnetic valve 6.
Optionally, the electromagnetic valve 6 is connected with a control panel in the cabin through an engine circuit, when the electromagnetic valve 6 receives an oil cutting signal, the electromagnetic valve 6 is opened, and the oil cutting path is communicated with the oil return path.
Optionally, a second connection oil path is arranged at the spring cavity of the housing 1, and the second connection oil path is communicated with the oil return path.
Optionally, the parameters of the spring 5 are set according to the oil pressure variation range.
Optionally, the housing 1 is fixedly connected to the liner 2.
Optionally, the bushing 2 is connected with the oil distributing valve 3 in a clearance fit manner.
Optionally, the upper end of the spring seat pin 4 is connected with the upper end of the housing 1 in a threaded manner.
The embodiment of the invention provides an oil cutting device with a protective valve, which realizes that an oil cutting oil way does not have the oil cutting function after an engine enters a flight working state.
Drawings
Fig. 1 is a schematic structural diagram of an oil cutting device in the prior art;
fig. 2 is a schematic structural diagram of an oil cutting device with a protective valve according to an embodiment of the present invention;
the symbols in the figures are as follows: 1-a shell; 2-a lining; 3-oil distributing valve; 4-spring seat pin; 5-a spring; 6-electromagnetic valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The invention is based on the common oil cutting device of the engine fuel oil supply system, and the oil separating valve is added before the oil cutting electromagnetic valve, so that the oil cutting function of an oil cutting oil path is forbidden after the engine is started and enters a flight working state.
As shown in fig. 2, the oil cutting device with a protective valve of the present invention mainly comprises a housing 1, a bushing 2, an oil distributing valve 3, a spring seat pin 4, a spring 5, and an electromagnetic valve 6, and the working principle of the device is as follows: in the starting process of the engine, the oil pressure of the oil supply path is lower, the oil distributing valve 3 stays at the lower end of the lining 2 under the action of the spring 5, the oil cutting path is communicated with the oil hole of the oil distributing valve 3 at the moment, the oil hole of the lining 2 is communicated with the electromagnetic valve, and the electromagnetic valve can normally perform oil cutting operation; when the engine enters a working state, the oil pressure of the oil supply path rises, the oil distribution valve 3 is pushed to move upwards, the oil hole communicated with the bush 2 is closed by the movement of the oil distribution valve 3, namely, the oil cutting path communicated with the electromagnetic valve is closed, and at the moment, the oil cutting function can not be realized by the oil cutting operation of the electromagnetic valve.
The oil cutting device with the protective valve is used on a certain type of fuel regulator, is applied to a conveyor, an early warning machine and an amphibious aircraft, has good use condition in troops, and can well meet the use requirement of products.
It is to be noted that the foregoing description is only exemplary of the invention and that the principles of the technology may be employed. Those skilled in the art will appreciate that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements and substitutions will now be apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.
Claims (8)
1. The utility model provides a take protection valve cut oily device, its characterized in that, the device is including setting up the protection valve on cutting the oil circuit, and the first end of protection valve is through cutting oil circuit and main oil circuit intercommunication, and the second end of protection valve is through cutting the oil circuit and returning oil circuit intercommunication, the protection valve includes casing (1), bush (2), branch oil valve (3), spring seat nail (4), spring (5), wherein:
The shell (1) is of a hollow tubular structure, a spring seat nail (4) is arranged at the upper end of the shell (1), and a bushing (2) is arranged at the lower end of the inner wall of the shell (1); the spring seat nail (4) is of a T-shaped structure, the upper end of the spring seat nail (4) is fixedly connected with the upper end of the shell (1), and the lower end of the spring seat nail (4) is of a columnar structure; the lower end of the spring seat nail (4) penetrates through the spring (5), one end of the spring (5) is propped against the spring seat nail (4), and the other end of the spring (5) is propped against the oil distribution valve (3); the oil distribution valve (3) is arranged in the bushing (2), and the oil distribution valve (3) can move up and down in the bushing (2) under the action of the elasticity and the oil pressure of the spring (5); when the oil pressure of the oil distribution valve (3) is smaller than a preset pressure value, the oil distribution valve (3) is communicated with the oil cutting way; when the oil pressure of the oil distribution valve (3) is greater than or equal to a preset pressure value, the oil distribution valve (3) is disconnected with the oil cutting way.
2. The device according to claim 1, characterized in that it further comprises a solenoid valve (6), the solenoid valve (6) being located on the oil cut-off line protecting the second end of the valve;
one side of the oil distribution valve (3) is provided with a first oil hole, one side of the bush (2) is provided with a second oil hole, when the oil distribution valve (3) moves in the bush (2) to communicate the first oil hole with the second oil hole, fuel oil flows through a first connecting oil path through the first oil hole and the second oil hole to reach the electromagnetic valve (6).
3. The device according to claim 2, characterized in that the solenoid valve (6) is connected with a control panel in the cabin through an engine circuit, when the solenoid valve (6) receives an oil cutting signal, the solenoid valve (6) is opened, and the oil cutting path is communicated with the oil return path.
4. The device according to claim 1, characterized in that a second connection oil passage is provided at the spring chamber of the housing (1), said second connection oil passage communicating with the return oil passage.
5. The device according to claim 1, characterized in that the spring (5) parameters are set according to the oil pressure variation range.
6. A device according to claim 1, characterised in that the housing (1) is fixedly connected to the bush (2).
7. Device according to claim 1, characterized in that the bushing (2) is connected with the oil distribution flap (3) by means of a clearance fit.
8. The device as claimed in claim 1, characterized in that the upper end of the spring anchor (4) is screwed to the upper end of the housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911151936.3A CN110939516B (en) | 2019-11-21 | 2019-11-21 | Oil cutting device with protective valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911151936.3A CN110939516B (en) | 2019-11-21 | 2019-11-21 | Oil cutting device with protective valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110939516A CN110939516A (en) | 2020-03-31 |
| CN110939516B true CN110939516B (en) | 2022-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911151936.3A Active CN110939516B (en) | 2019-11-21 | 2019-11-21 | Oil cutting device with protective valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN110939516B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765004B (en) * | 2020-05-22 | 2023-01-03 | 中国航发贵州红林航空动力控制科技有限公司 | Conversion valve mechanism of fuel pump regulator |
| CN114109611B (en) * | 2021-11-05 | 2023-05-23 | 中国航发西安动力控制科技有限公司 | Piston type oil distributing valve assembly with double-spring structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533634B (en) * | 2014-12-16 | 2017-06-13 | 中国南方航空工业(集团)有限公司 | Engine fuel controls speed change system |
| CN205120373U (en) * | 2015-11-20 | 2016-03-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Debugging device that axial -flow type engine disappears and breathes heavily function reliability |
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- 2019-11-21 CN CN201911151936.3A patent/CN110939516B/en active Active
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| Publication number | Publication date |
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| CN110939516A (en) | 2020-03-31 |
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