CN111894739A - Control valve assembly structure with throttling nozzle - Google Patents
Control valve assembly structure with throttling nozzle Download PDFInfo
- Publication number
- CN111894739A CN111894739A CN202010731334.1A CN202010731334A CN111894739A CN 111894739 A CN111894739 A CN 111894739A CN 202010731334 A CN202010731334 A CN 202010731334A CN 111894739 A CN111894739 A CN 111894739A
- Authority
- CN
- China
- Prior art keywords
- hole
- pressure
- valve
- fuel
- throttle
- 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.)
- Pending
Links
- 239000000295 fuel oil Substances 0.000 claims description 13
- 239000000446 fuel Substances 0.000 abstract description 36
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 13
- 230000002411 adverse Effects 0.000 description 2
- 230000002159 abnormal effect Effects 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
- 238000010586 diagram Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D37/00—Arrangements in connection with fuel supply for power plant
- B64D37/34—Conditioning fuel, e.g. heating
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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
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/26—Control of fuel supply
- F02C9/263—Control of fuel supply by means of fuel metering valves
-
- 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
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/26—Control of fuel supply
- F02C9/32—Control of fuel supply characterised by throttling of fuel
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a control valve component structure with a throttling nozzle, which comprises a bush, wherein a fuel inlet hole and a fuel outlet hole are sequentially distributed on the bush along the length direction, a valve is arranged in the bush, a fuel through groove with the width larger than the distance between the fuel inlet hole and the fuel outlet hole is arranged on the valve, a first pressure through hole is axially arranged on the axis of the valve, one end of the first pressure through hole extends to the end part of the valve and is communicated with a pressure cavity formed between the end part of the valve and the inner bottom surface of the bush, and a second pressure through hole communicated with the fuel through groove is arranged on one side surface of the first; and the end part of the first pressure through hole is provided with a throttle nozzle with a U-shaped section, and the bottom of the throttle nozzle is provided with a throttle hole with a hole diameter smaller than that of the first pressure through hole. The invention is little influenced by oil pressure fluctuation, is beneficial to controlling the stable oil supply of a system, and can improve the running stability of the engine and prolong the service life of the engine.
Description
Technical Field
The invention relates to a control valve component structure, in particular to a control valve component structure with a throttling nozzle.
Background
In a general aviation or ground fuel control system, a fuel pump regulator adopts a large number of valve coupling parts to perform a mechanical hydraulic control mode. During the operation of the engine, the fuel control system is inevitably subjected to oil pressure fluctuation caused by oil supply from an oil pump, external signal feedback and engine working condition change. For a control valve with certain sensitivity requirement, the adverse signal can be further amplified in the real-time follow-up regulation, so that the oil pressure of a control system is vibrated, the oil supply is unstable, and the operation stability and the service life of an engine are adversely affected.
Disclosure of Invention
The invention aims to provide a control valve assembly structure with a throttling nozzle. The invention is little influenced by oil pressure fluctuation, is beneficial to controlling the stable oil supply of a system, and can improve the running stability of the engine and prolong the service life of the engine.
The technical scheme of the invention is as follows: a control valve component structure with a throttling nozzle comprises a bush, wherein a fuel inlet hole and a fuel outlet hole are sequentially distributed on the bush along the length direction, a valve is arranged in the bush, a fuel through groove with the width larger than the distance between the fuel inlet hole and the fuel outlet hole is arranged on the valve, a first pressure through hole is axially arranged on the axis of the valve, one end of the first pressure through hole extends to the end part of the valve and is communicated with a pressure cavity formed between the end part of the valve and the inner bottom surface of the bush, and a second pressure through hole communicated with the fuel through groove is arranged on one side surface of the pressure through; and the end part of the first pressure through hole is provided with a throttle nozzle with a U-shaped section, and the bottom of the throttle nozzle is provided with a throttle hole with a hole diameter smaller than that of the first pressure through hole.
The invention has the advantages of
According to the invention, the throttle nozzle is arranged at the tail end of the pressure through hole in the valve, and the throttle hole with the aperture smaller than that of the pressure through hole is arranged on the throttle nozzle, so that fluctuating oil pressure is absorbed, the influence of the fluctuation of the oil pressure on the position of the valve is reduced as much as possible, the influence of the oil pressure on the valve is reduced, the oil supply of a control system is more stable, the stability of the operation of an engine is improved, and meanwhile, the service life of the engine can be prolonged.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
description of reference numerals: 1-lining, 2-fuel inlet hole, 3-fuel outlet hole, 4-valve, 5-fuel through groove, 6-pressure through hole I, 7-pressure through hole II, 8-pressure cavity, 9-throttling nozzle and 10-throttling hole.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
Examples of the invention
A control valve component structure with a throttling nozzle is shown in figure 1 and comprises a lining 1, wherein a fuel inlet hole 2 and a fuel outlet hole 3 (aperture phi 3) are sequentially distributed on the lining 1 along the length direction, a valve 4 is arranged in the lining 1, a fuel through groove 5 with the width larger than the distance between the fuel inlet hole 2 and the fuel outlet hole 3 is arranged on the valve 4, a pressure through hole I6 (aperture phi 2.5) is axially arranged on the axis of the valve 4, one end of the pressure through hole I6 extends to the end part of the valve 4 and is communicated with a pressure cavity 8 formed between the end part of the valve 4 and the inner bottom surface of the lining 1, and a pressure through hole II 7 (aperture phi 2 phi) communicated with the fuel through groove 5 is arranged on the side; the end part of the first pressure through hole 6 is provided with a throttle mouth 9 with a U-shaped section, and the bottom of the throttle mouth 9 is provided with a throttle hole 10 (with the aperture phi of 0.5) with the aperture smaller than that of the first pressure through hole 6.
The working principle is as follows: fuel enters the bushing 1 from the fuel inlet hole 2, is filled in the fuel through groove 5 between the bushing 1 and the valve 4, and then is discharged from the fuel outlet 3, part of the fuel enters the pressure chamber 8 between the right end surface of the valve 4 and the bottom of the right side in the bushing 1 from the pressure through hole II 7 and the pressure through hole I6, thrust corresponding to the pressure of the input fuel is generated, the valve 4 is pushed to the left side, the spring which is propped against the left side of the valve 4 is compressed, the pressure of the fuel and the thrust of the spring form dynamic balance, the right side of the fuel through groove 5 on the valve 4 moves left and right along with the valve 4, the area of the valve covering the fuel inlet hole 2 can also change correspondingly, and therefore the purpose of automatically adjusting the fuel inlet and outlet along with the change of the fuel pressure is achieved, and the basic control principle of the fuel control valve assembly is; in this embodiment, fuel oil in the pressure chamber 8 for pushing the valve 4 to move needs to pass through the orifice 10, when the pressure of the fuel oil flowing in from the fuel oil inlet hole 2 generates abnormal fluctuation, the orifice 10 blocks and absorbs the fluctuating oil pressure, and the fluctuation range of the pressure in the pressure chamber 8 is reduced, so that the valve 4 is prevented from greatly swinging left and right under the influence of the fluctuating oil pressure to cause the great change of the fuel oil inlet amount, and the fuel oil inlet amount and the fuel oil outlet amount are enabled to be more stable.
The above description is only for the purpose of illustrating the present invention and the appended claims, and the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (1)
1. The utility model provides a take control valve subassembly structure of throttle mouth which characterized in that: the fuel oil pump comprises a bushing (1), wherein a fuel oil inlet hole (2) and a fuel oil outlet hole (3) are sequentially distributed on the bushing (1) along the length direction, a valve (4) is arranged in the bushing (1), a fuel oil through groove (5) with the width larger than the distance between the fuel oil inlet hole (2) and the fuel oil outlet hole (3) is arranged on the valve (4), a pressure through hole I (6) is axially arranged at the axis of the valve (4), one end of the pressure through hole I (6) extends to the end part of the valve (4) and is communicated with a pressure cavity (8) formed between the end part of the valve (4) and the inner bottom surface of the bushing (1), and a pressure through hole II (7) communicated with the fuel oil through groove (5) is arranged; the end part of the first pressure through hole (6) is provided with a throttle nozzle (9) with a U-shaped section, and the bottom of the throttle nozzle (9) is provided with a throttle hole (10) with a hole diameter smaller than that of the first pressure through hole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010731334.1A CN111894739A (en) | 2020-07-27 | 2020-07-27 | Control valve assembly structure with throttling nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010731334.1A CN111894739A (en) | 2020-07-27 | 2020-07-27 | Control valve assembly structure with throttling nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111894739A true CN111894739A (en) | 2020-11-06 |
Family
ID=73189715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010731334.1A Pending CN111894739A (en) | 2020-07-27 | 2020-07-27 | Control valve assembly structure with throttling nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111894739A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0053290A1 (en) * | 1980-11-29 | 1982-06-09 | Welland & Tuxhorn | Outlet for a throttling valve |
| CN101839359A (en) * | 2009-11-18 | 2010-09-22 | 南京工程学院 | Variable-difference relief valve |
| CN201672119U (en) * | 2010-05-24 | 2010-12-15 | 杭州春江阀门有限公司 | Pressure-difference-adjustable self-operated pressure-difference control valve |
| CN105909584A (en) * | 2016-03-02 | 2016-08-31 | 杭州力龙液压有限公司 | Buffer overflow valve |
| CN108547820A (en) * | 2018-07-16 | 2018-09-18 | 贵州大学 | A kind of box-like orifice valve of pressure difference control group |
-
2020
- 2020-07-27 CN CN202010731334.1A patent/CN111894739A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0053290A1 (en) * | 1980-11-29 | 1982-06-09 | Welland & Tuxhorn | Outlet for a throttling valve |
| CN101839359A (en) * | 2009-11-18 | 2010-09-22 | 南京工程学院 | Variable-difference relief valve |
| CN201672119U (en) * | 2010-05-24 | 2010-12-15 | 杭州春江阀门有限公司 | Pressure-difference-adjustable self-operated pressure-difference control valve |
| CN105909584A (en) * | 2016-03-02 | 2016-08-31 | 杭州力龙液压有限公司 | Buffer overflow valve |
| CN108547820A (en) * | 2018-07-16 | 2018-09-18 | 贵州大学 | A kind of box-like orifice valve of pressure difference control group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201106 |
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| RJ01 | Rejection of invention patent application after publication |