CN107883015A - A kind of air pressure adaptive servo valve - Google Patents
A kind of air pressure adaptive servo valve Download PDFInfo
- Publication number
- CN107883015A CN107883015A CN201710941344.6A CN201710941344A CN107883015A CN 107883015 A CN107883015 A CN 107883015A CN 201710941344 A CN201710941344 A CN 201710941344A CN 107883015 A CN107883015 A CN 107883015A
- Authority
- CN
- China
- Prior art keywords
- valve element
- valve
- lever
- spring
- bushing
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/16—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
- F16K31/165—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a diaphragm
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Servomotors (AREA)
Abstract
The present invention proposes a kind of air pressure adaptive servo valve, can export servo pressure with the change of ambient pressure.The invention belongs to aero-engine fuel oil to control accessory of hydraulic servomechanism installation, is related to the improvement to level pressure servo valve.It is characterized in that：On the basis of level pressure servo valve existing structure, the change output displacement of ambient pressure is experienced using aneroid capsule (5), aneroid capsule (5) displacement is acted on by valve element (1) by spring base (4) and lever (6).
Description
Technical field
Aero-engine fuel oil controls accessory of hydraulic servomechanism installation
Background technology
As shown in figure 1, being the structure principle chart of typical level pressure servo valve, its function of realizing is to change hydraulic oil
Into the level pressure servo oil related to spring force value, and the level pressure servo oil does not change with the change of high pressure oil pressure.
Its operation principle is：The lower end of valve element 1 is that P servos are oily, upper end P0Low pressure oil, P1Hydraulic oil passes through valve element 1 and bushing
2 relative positions form passage B and entered in valve element 1.When P1 hydraulic oils pressure rise (reduction), P servo oil pressures uprise
(low), valve element is promoted to compress (loosening) spring 3 to upper (lower) movement, the elastic force of spring 3 is become big (small).It is upper (lower) in valve element 1
Passage B apertures can be turned down and (held big) during shifting, cause P servo oil pressures to reduce (rise), be moved down in spring force effect bottom spool
(moving up), home position is returned to substantially, keep dynamic equilibrium.
In equilbrium position, the elastic force of P0 low pressure oils and spring 3 is experienced in valve element upper end, and P servo oil pressures are experienced in valve element lower end,
According to force balance principle, have：
P × A=P0×A+f
Wherein：A is the lifting surface area of valve element；F is the elastic force of spring 3.
P servo oil pressures can be calculated：
P=(P0×A+f)/A
As can be seen that P servo oil pressures are relevant with valve area A, P0 low pressure oil and f spring forces.In valve mechanism and it is
Under conditions of system determines, A and P0For determination value.Therefore, P servo oil pressures are only relevant with f spring forces.
In the case that valve element, bushing and spring structure size and installation site determine, P servo oil pressures are certain value,
Therefore referred to as level pressure servo valve.
The content of the invention
Goal of the invention
Existing structure level pressure servo oil is fixed value, it is impossible to the level pressure servo oil that output changes with air pressure change.This hair
Bright purpose is exactly to realize that servo pressure can be with air pressure change.
Technical principle：According to the operation principle (see Fig. 1) of level pressure servo valve, level pressure servo valve structure is changed
Entering, main improved though is the relation with air pressure change by aneroid capsule power output, changes valve (1) upper end stress, so as to
Reach the purpose for changing P servo oil pressures.Main improvement is as follows：
1) air pressure sense device -- aneroid capsule is increased, with the change of air pressure, aneroid capsule power output also and then changes,
Its variation relation is shown in Fig. 2.
2) increase lever and spring seat mechanism, aneroid capsule output force value is delivered on valve (1).
Technical scheme
A kind of air pressure adaptive servo valve, including valve element (1), bushing (2), spring (3) and aneroid capsule (5) are provided
With leverage (6)；
Bushing (2) is sleeved on valve element (1) outside, and the oilhole in valve element is corresponding with the through hole on bushing (2), the movement of valve element
The logical oil mass from bushing through hole to valve element oilhole can be changed；
Aneroid capsule (5) includes push rod, drives push rod reciprocal for experiencing ambient pressure state, and with air pressure change
Motion；Lever construction includes lever (6) and rotating shaft (7), lever one end couple with the push rod of aneroid capsule (5), the lever other end
Act on spring or valve element, the other end can drive spring or valve element reciprocal linear to move；Energy during described lever swing
Enough band movable valve plug or spring linear movement, and cause the logical oil mass from bushing through hole to valve element oilhole.
Further, including valve body, described bushing are fixed on valve body, the setting that described lever passes through axis of rotation
On valve body, aneroid capsule (5) is fixed on valve body.
Further, the described lever other end is plugged in groove or the hole of valve element, and can be slided relative to groove or hole.
Further, including spring base (4), described spring are arranged on spring base (4) between valve element, described spring
Seat (4) is fixed on valve body.
Further, including spring base (4), described spring are arranged on spring base (4) between valve element, described lever
The other end is plugged in groove or the hole of spring base (4), and can be slided relative to groove or hole.
In initial rigging position, to give aneroid capsule (5) certain precompression in advance, the pretightning force is greater than equal to vacuum
Maximum output power of the bellows (5) in operating air pressure scope.
The effect of invention
The transformation servo valve characteristic of the present invention is contrasted with level pressure servo valve characteristic.Transformation servo valve is realized
Linear change of the P servos oil with Ph atmospheric pressures, and characteristic line slope can be adjusted by adjusting lever ratio K.
Brief description of the drawings
Fig. 1 is prior art schematic diagram；
Fig. 2 is transformation servo valve structure schematic diagram；
Wherein：1. valve element；2. bushing；3. spring；4. spring base；5. aneroid capsule；6. lever；7. rotating shaft.
Embodiment
Concrete structure is described with reference to the drawings, referring to accompanying drawing 2
A kind of air pressure adaptive servo valve, including valve element (1), bushing (2), spring (3) and aneroid capsule (5) are provided
And leverage；
Bushing (2) is sleeved on valve element (1) outside, and the oilhole in valve element is corresponding with the through hole on bushing (2), the movement of valve element
The logical oil mass from bushing through hole to valve element oilhole can be changed；
Aneroid capsule (5) includes push rod, drives push rod reciprocal for experiencing ambient pressure state, and with air pressure change
Motion；
Lever construction includes lever (6) and rotating shaft (7), lever one end couple with the push rod of aneroid capsule (5), and lever is another
End is acted on spring or valve element, and the other end can drive spring or valve element reciprocal linear to move；During described lever swing
Can be with movable valve plug or spring linear movement, and cause the logical oil mass from bushing through hole to valve element oilhole.
Further, including valve body, described bushing are fixed on valve body, the setting that described lever passes through axis of rotation
On valve body, aneroid capsule (5) is fixed on valve body；
The described lever other end is plugged in groove or the hole of valve element, and can be slided relative to groove or hole；
Including spring base (4), described spring is arranged on spring base (4) between valve element, and described spring base (4) is fixed
On valve body；
Wherein：The operating air pressure of aneroid capsule is 5kPa~101.325kPa；Aneroid capsule power output scope is 0~60N；
The arm of force that leverage acts on valve element side relative to rotating shaft is with the arm of force ratio for acting on aneroid capsule：1~
1.6。
The invention has been successfully applied on certain type aero-engine Contingency Fuel adjuster, for enabling a system to according to winged
The change of row height automatically adjusts Contingency Fuel quantity delivered, meets the traffic demand of engine emergency rating.The type product is not
Carry out the annual order for there are more than 100, there is huge economic potential.Invention device simultaneously, for subsequent serial product
Development ＆ production have greatly instruct and reference value.
Claims (2)
1. a kind of air pressure adaptive servo valve, including valve element (1), bushing (2), spring (3) and aneroid capsule (5) and Lever machine
Structure；
Bushing (2) is sleeved on valve element (1) outside, and the oilhole in valve element is corresponding with the through hole on bushing (2), and the mobile of valve element can change
Become the logical oil mass from bushing through hole to valve element oilhole；
Aneroid capsule (5) includes push rod, drives push rod back and forth to transport for experiencing ambient pressure state, and with air pressure change
It is dynamic；
Lever construction includes lever (6) and rotating shaft (7), lever one end couple with the push rod of aneroid capsule (5), and the lever other end is made
With on spring or valve element, the other end can drive spring or valve element reciprocal linear to move；Can during described lever swing
Band movable valve plug or spring linear movement, and cause the logical oil mass from bushing through hole to valve element oilhole.
A kind of 2. air pressure adaptive servo valve as claimed in claim 1, it is characterised in that：Including valve body, described bushing
It is fixed on valve body, described lever is arranged on valve body by axis of rotation, and aneroid capsule (5) is fixed on valve body；
The described lever other end is plugged in groove or the hole of valve element, and can be slided relative to groove or hole；
Including spring base (4), described spring is arranged on spring base (4) between valve element, and described spring base (4) is fixed on valve
On body；
Wherein：The operating air pressure of aneroid capsule is 5kPa~101.325kPa；Aneroid capsule power output scope is 0~60N；
The arm of force that leverage acts on valve element side relative to rotating shaft is with the arm of force ratio for acting on aneroid capsule：1~1.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941344.6A CN107883015A (en) | 2017-10-11 | 2017-10-11 | A kind of air pressure adaptive servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941344.6A CN107883015A (en) | 2017-10-11 | 2017-10-11 | A kind of air pressure adaptive servo valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107883015A true CN107883015A (en) | 2018-04-06 |
Family
ID=61781248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710941344.6A Pending CN107883015A (en) | 2017-10-11 | 2017-10-11 | A kind of air pressure adaptive servo valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107883015A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219998A (en) * | 2018-11-21 | 2019-09-10 | 中国航发西安动力控制科技有限公司 | A kind of gear pump safety valve structure |
| CN110318886A (en) * | 2019-07-16 | 2019-10-11 | 中国航发沈阳发动机研究所 | A kind of fuel metering system and its matching process based on duplex gear pump |
| CN110529640A (en) * | 2019-08-02 | 2019-12-03 | 中国航发北京航科发动机控制***科技有限公司 | It is a kind of can adverse current constant pressure valve |
| CN111255761A (en) * | 2020-01-19 | 2020-06-09 | 宁波江北宇洲液压设备厂 | Hydraulic control reversing pressure reducing valve |
| CN113505473A (en) * | 2021-06-22 | 2021-10-15 | 成都凯天电子股份有限公司 | Design method for realizing pressure-displacement characteristic of air pressure correction vacuum diaphragm capsule |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB537026A (en) * | 1939-12-04 | 1941-06-05 | Cav Ltd | Improvements relating to means for controlling internal combustion engines for air-craft |
| GB537027A (en) * | 1939-12-04 | 1941-06-05 | Cav Ltd | Improvements relating to controlling means for air-craft internal combustion engines |
| GB697852A (en) * | 1950-07-03 | 1953-09-30 | Power Jets Res & Dev Ltd | Improvements in or relating to gas turbine plant |
| CN2259496Y (en) * | 1996-05-24 | 1997-08-13 | 成都天驹汽车研究所 | Vacuum valve electric control single-point spray actuator for vehicle |
| CN101639136A (en) * | 2008-07-28 | 2010-02-03 | 中航力源液压股份有限公司 | Method and device for eliminating jamming of oil pump servo valve core |
| CN103244494A (en) * | 2013-04-26 | 2013-08-14 | 安徽理工大学 | Mass flow high-frequency direct-acting electro-hydraulic servo valve based on great magnetostriction converter |
-
2017
- 2017-10-11 CN CN201710941344.6A patent/CN107883015A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB537026A (en) * | 1939-12-04 | 1941-06-05 | Cav Ltd | Improvements relating to means for controlling internal combustion engines for air-craft |
| GB537027A (en) * | 1939-12-04 | 1941-06-05 | Cav Ltd | Improvements relating to controlling means for air-craft internal combustion engines |
| GB697852A (en) * | 1950-07-03 | 1953-09-30 | Power Jets Res & Dev Ltd | Improvements in or relating to gas turbine plant |
| CN2259496Y (en) * | 1996-05-24 | 1997-08-13 | 成都天驹汽车研究所 | Vacuum valve electric control single-point spray actuator for vehicle |
| CN101639136A (en) * | 2008-07-28 | 2010-02-03 | 中航力源液压股份有限公司 | Method and device for eliminating jamming of oil pump servo valve core |
| CN103244494A (en) * | 2013-04-26 | 2013-08-14 | 安徽理工大学 | Mass flow high-frequency direct-acting electro-hydraulic servo valve based on great magnetostriction converter |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219998A (en) * | 2018-11-21 | 2019-09-10 | 中国航发西安动力控制科技有限公司 | A kind of gear pump safety valve structure |
| CN110318886A (en) * | 2019-07-16 | 2019-10-11 | 中国航发沈阳发动机研究所 | A kind of fuel metering system and its matching process based on duplex gear pump |
| CN110529640A (en) * | 2019-08-02 | 2019-12-03 | 中国航发北京航科发动机控制***科技有限公司 | It is a kind of can adverse current constant pressure valve |
| CN110529640B (en) * | 2019-08-02 | 2021-10-26 | 中国航发北京航科发动机控制***科技有限公司 | Constant pressure valve capable of reversing flow |
| CN111255761A (en) * | 2020-01-19 | 2020-06-09 | 宁波江北宇洲液压设备厂 | Hydraulic control reversing pressure reducing valve |
| CN113505473A (en) * | 2021-06-22 | 2021-10-15 | 成都凯天电子股份有限公司 | Design method for realizing pressure-displacement characteristic of air pressure correction vacuum diaphragm capsule |
| CN113505473B (en) * | 2021-06-22 | 2023-10-24 | 成都凯天电子股份有限公司 | Design method for realizing pressure-displacement characteristic of air pressure correction vacuum bellows |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107883015A (en) | A kind of air pressure adaptive servo valve | |
| CN101871477B (en) | Intermediate-pressure control two-position variable axial plunger hydraulic motor | |
| CN201875226U (en) | Sequence valve | |
| CN103925404B (en) | A kind of actuating motor directly drives the piston type pneumatic proportional pressure-reducing valve of end cam | |
| CN202327308U (en) | Digital proportional valve | |
| CN201433869Y (en) | Pressure controllable mortar pump | |
| CN202732523U (en) | Pilot valve for loading machine | |
| CN201582458U (en) | High precision quick reaction pilot valve | |
| CN106762970B (en) | A kind of double ratio control structures and control method of variable displacement motor | |
| CN201972986U (en) | Flow controllable cartridge valve | |
| CN103925399A (en) | Diaphragm-type pneumatic proportional pressure reducing valve of edge cam driven by servo motor directly | |
| CN203348695U (en) | Rapid cut-off valve actuator | |
| CN202302022U (en) | Inching valve of hydraulic transmission box | |
| CN105673373A (en) | Constant-pressure variable axial plunger pump with adjustable zero load flow | |
| CN104454422A (en) | 160 full displacement variable plunger pump and control method thereof | |
| CN201321999Y (en) | Adjustment control device of adjustable stator blade of axial flow compressor | |
| CN203147008U (en) | Link plate coordinated type reversing valve | |
| CN101315068B (en) | Electrohydraulic proportion variable axial plunger pump | |
| CN203082301U (en) | Gas pressure reducer for mass flow | |
| CN101639136B (en) | Method and device for eliminating jam of valve core of oil pump servovalve | |
| CN210599363U (en) | Remote controller with valve core limiting function for plunger pump | |
| CN205207844U (en) | Piezoceramics driving thin film formula servovalve | |
| CN204942129U (en) | Integrated form height adjusting valve | |
| CN103775711A (en) | Control method for large flow direct-activated piezoelectric reducing valve | |
| CN208336088U (en) | A kind of superposing type pressure switch |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180406 |