CN106870784A - Guide's balanced high pressure pneumatic proportional pressure-reducing valve - Google Patents
Guide's balanced high pressure pneumatic proportional pressure-reducing valve Download PDFInfo
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- CN106870784A CN106870784A CN201510913189.8A CN201510913189A CN106870784A CN 106870784 A CN106870784 A CN 106870784A CN 201510913189 A CN201510913189 A CN 201510913189A CN 106870784 A CN106870784 A CN 106870784A
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- valve
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- high pressure
- reducing valve
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
Guide's balanced high pressure pneumatic proportional pressure-reducing valve, using piston cylinder operator, the pneumatic half-bridge principle of its structure application is mainly made up of main valve, pilot valve, controller, proportion electro-magnet etc..Output pressure is more easy to control, and has the advantages that self sealss, and outlet pressure is evenly distributed.Using balance type structure, outlet plenum is connected with feedback cavity, and valve core of main valve part has good and adjustment valve flow gain the function of sealing concurrently using the structure type with cone valve and guiding valve；Valve seat makes torus knot head piece coning with the contact site of valve element, and the low-pressure end of poppet valve core installs back-moving spring, proportion electro-magnet additional to realize adjust automatically；By way of the spring rate and main valve plug quality that improve pilot valve and main valve, strengthen the stability of pressure-reducing valve, effectively control outlet plenum volume, the dynamic property of lifting pressure-reducing valve.
Description
Technical field
The present invention relates to a kind of guide's balanced high pressure pneumatic proportional pressure-reducing valve, high-pressure pneumatic system is applied especially to.
Background technology
As the development of modern industrialization and industrial technology with rapid changepl. never-ending changes and improvements are changed, pneumatics plays indispensable role in national product, and is just stood among industrial circle with the new mode snake of kind firewoods.In recent years, pneumatics is developed rapidly, and under the drive of computer technology and electronic technology, pneumatics also has greatly lifting.In pneumatics field, workpiece is manipulated by the energy of compressed air mainly.With interchangeable manufacturing and the development of automation, pneumatics is widely used in all trades and professions.There is space flight and aviation to control propulsion system, weaponry and in the Pneumatic automobile system of year Olympic Games operation, also penetrate into health care and daily life, influence big having some idea of.
Dynamic property due to pneumatic system etc. is badly in need of being improved, therefore following research direction of pneumatics is pneumatic high-voltage field surely.High-pressure trend has the fixed improvement of to the dynamic characteristic of system, and response speed is improved a lot.Meanwhile, pressure increase also by so that pneumatic element to it is integrated and miniaturization continue to develop.Property that a little other energy of do not have such as gases at high pressure power is high, density is high, expansion ratio is big etc. is used by industry-by-industry.
The content of the invention
In order to overcome existing Reduction of High Pressure Pneumatic valve in actual use because the dynamic property of the valve produced by high-pressure trend is not good and the not high enough practical problem of efficiency of energy utilization that is causing, the present invention provides kind guide's balanced high pressure pneumatic proportional pressure-reducing valve, the type Reduction of High Pressure Pneumatic valve has good static characteristic and dynamic characteristic, effectively control exports cavity volume, increase guided membrane piece, main film, pilot valve main valve back-moving spring rigidity, the pressure stability of high-pressure trend late gate is improved, and improves efficiency of energy utilization in actual use.
The technical solution adopted for the present invention to solve the technical problems is：Guide's balanced high pressure pneumatic proportional pressure-reducing valve uses piston cylinder operator, the pneumatic half-bridge principle of its structure application, is mainly made up of main valve, pilot valve, controller, proportion electro-magnet etc.；Pilot valve Bian cone valve structures, structure types of the main valve Bian with cone valve and guiding valve；Import of the pilot control air-flow from valve, control gas circuit is serially connected with definite value flow control valve.Flow is divided into two-way by definite value flow control valve, and all the way into pilot stage, another road enters main valve pressure regulating cavity；Pressure sensor is provided with the outlet plenum of main valve, the feedback of pressure is carried out；Pressure-reducing valve introduces pneumatic bridge, is used to make the pressure stability of output adjustable, it is ensured that the motion of valve element is controllable；Dynamic and static sealing uses soft seal in guide's balanced high pressure pneumatic proportional pressure-reducing valve, it is ensured that the sealing of adjacent flow channels；Sealed end face seal between main valve and pilot valve valve port, uses the encapsulated valve mechanism of metal at the conical surface of wealthy core；Valve seat and valve element conical surface directly contact, when thrust is bigger, contact surface is tightr, plays good sealing function, overcomes gases at high pressure due to lubricity is low, the low feature of viscosity so that the practical problem that the difficulty of sealing is increased.
The beneficial effects of the invention are as follows：The piston type Reduction of High Pressure Pneumatic valve employs the self sealss mode of spring force feedback on balance mode so that output pressure is more easy to control, and has the advantages that self sealss；Valve seat is used using cone annular restriction with the contact site of valve element, and annulus area gradually increases from the inlet to the outlet so that the side valve type cone valve valve outlet pressure after optimization is evenly distributed；By way of the spring rate and main valve plug quality that improve pilot valve and main valve, strengthen the stability of pressure-reducing valve, effectively control outlet plenum volume, the dynamic property of optimization pressure-reducing valve.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is guide's balanced high pressure pneumatic pressure-release valve structure chart.
Fig. 2 is balanced type pneumatic structure of relief pressure valve figure.
Fig. 3 is definite value flow control valve.
In Fig. 1,1. main valve body, 2. back-moving spring, 3. feedback cavity, 4.. main valve plugs, 5. Sealing shield ring, 6-. main valve seats, 7. piston, 8. damping port, 9. spring is adjusted, 10. pressure regulating cavity, 11. definite value flow control valves, 12. guide valve blocks, 13. pilot valves, 14. proportion electro-magnets, 15. controllers, 16. pressure sensors.
Specific embodiment
As shown in fig. 1, balanced high pressure pneumatic proportional pressure-reducing valve structure mainly includes main valve 1, pilot valve 12, controller 15, proportion electro-magnet 14 etc. as illustrated, increase pneumatic half-bridge in its structure, pilot valve Bian cone valve structures, structure types of the main valve Bian with cone valve and guiding valve.
As shown in Fig. 2 using balance type structure, outlet plenum is connected with feedback cavity, out-of-balance force on piston is acted on to lay down inlet pressure, improve the precision control characteristic of pressure-reducing valve.
Preferably, sealing when closing both was protected in valve core of main valve part using the structure type with cone valve and guiding valve with cone valve, and the flow gain of valve is have adjusted again.Valve seat makes torus knot head piece coning with the contact site of valve element, and annulus area gradually increases from import to outlet, to prevent the generation of vortex and reducing the loss of energy, the gradually transition of area between valve seat and valve element.
Preferably, low-pressure end connection back-moving spring, the proportion electro-magnet of poppet valve core, during in order that valve being in off working state, can have and leaves certain pre compressed magnitude, while guarantee has sealing with automatic-closing valve during spring installation；In order to realize that gases at high pressure inlet end enters fashionable, reduce valve element and the violent collision of valve base chamber, spring leaves certain pre compressed magnitude, while impact of the gas to load end can be weakened.
As shown in figure 3, definite value flow control valve is made up of two vapour locks, elongated hole R on piston0It is fixed vapour lock, piston and the valve pocket rear portion radial hole of axial movement constitute variable restriction R1；Inlet pressure PADuring rising, the original atmospheric pressure of piston or so is destroyed with the balance of spring force, and the rising of atmospheric pressure promotes valve element to move right, and radial hole blocks a part by piston on valve pocket, turns down hole aperture, variable restriction R1Increase；Valve element moves right, and cavity volume diminishes, pressure PRIncrease, fixed vapour lock PAFront and rear pressure difference keeps constant, and fixed vapour lock R is flowed through in realization0With variable restriction R1Flow keep be basically unchanged, work as PADuring reduction, PRAlso reduce, R0In the case that front and rear pressure difference is also held essentially constant with flow is flowed through, therefore definite value flow control valve maintains inlet pressure fluctuation well, the pressure stability of pilot valve inlet chamber and main valve pressure regulating cavity.
Pilot control pressure is drawn from main valve inlet, is introduced into guide's definite value flow control valve, is then divided into two-way：Pilot stage high pressure chest is acted on all the way, and another road acts on main valve pressure regulating cavity.Equivalent to the fixed vapour lock of pneumatic half-bridge, pilot valve and valve seat constitute the variable restriction of pneumatic half-bridge to guide's definite value flow control valve；The command pressure signal of pneumatic half-bridge output is acted on main valve plug pressure regulating cavity, and pilot stage is considered as being a pneumatic half-bridge to load to the control action of main valve（That is the control chamber or sensitive cavity of power stage）Effect, pressure-reducing valve output pressure act on main valve piston lower surface as feedback force signal.
Preferably, dynamic and static sealing uses soft seal in guide's balanced high pressure pneumatic proportional pressure-reducing valve；Guide valve blocks and main valve body, stability of flow are controlled between wealthy body and main valve body, guide valve blocks and proportion electro-magnet and pressure sensor and main valve body as fixed part uses static seal；Being sealed between main valve plug and valve body, pilot valve and guide valve blocks, definite value flow control valve piston and valve body and valve element and valve seat is slidingly sealed.
Claims (5)
1. guide's balanced high pressure pneumatic proportional pressure-reducing valve, output pressure is more easy to control, and has the advantages that self sealss, and outlet pressure is evenly distributed, it is characterized in that：Using piston cylinder operator is used, mainly it is made up of main valve, pilot valve, controller, proportion electro-magnet etc.；Using pneumatic half-bridge, valve seat makes torus knot head piece coning with the contact site of valve element, and the low-pressure end connection back-moving spring of poppet valve core, proportion electro-magnet are dynamic and static in guide's balanced high pressure pneumatic proportional pressure-reducing valve to seal using soft seal；Valve core of main valve part is using the structure type with cone valve and guiding valve；Using balance type structure, outlet plenum is connected with feedback cavity.
2. guide's balanced high pressure pneumatic proportional pressure-reducing valve according to claim 1, it is characterized in that：The pneumatic half-bridge of sliding-vane vacuum pump application, pilot control pressure is drawn from main valve inlet, is introduced into guide's definite value flow control valve, is then divided into two-way：Pilot stage high pressure chest is acted on all the way, and another road acts on main valve pressure regulating cavity.
3. guide's balanced high pressure pneumatic proportional pressure-reducing valve according to claim 1, it is characterized in that：The low-pressure end connection back-moving spring of poppet valve core, proportion electro-magnet, during in order that valve being in off working state, can have and leave certain pre compressed magnitude with automatic-closing valve during spring installation.
4. guide's balanced high pressure pneumatic proportional pressure-reducing valve according to claim 1, it is characterized in that：Valve seat makes torus knot head piece coning with the contact site of valve element, and annulus area gradually increases from import to outlet, the gradually transition of area between valve seat and valve element.
5. guide's balanced high pressure pneumatic proportional pressure-reducing valve according to claim 1, it is characterized in that：Using balance type structure, outlet plenum is connected with feedback cavity, lays down the out-of-balance force that inlet pressure is acted on piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510913189.8A CN106870784A (en) | 2015-12-11 | 2015-12-11 | Guide's balanced high pressure pneumatic proportional pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510913189.8A CN106870784A (en) | 2015-12-11 | 2015-12-11 | Guide's balanced high pressure pneumatic proportional pressure-reducing valve |
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| CN106870784A true CN106870784A (en) | 2017-06-20 |
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| CN201510913189.8A Pending CN106870784A (en) | 2015-12-11 | 2015-12-11 | Guide's balanced high pressure pneumatic proportional pressure-reducing valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050259A (en) * | 2018-01-17 | 2018-05-18 | 无锡市华科力士水液压有限公司 | A kind of pneumatic electric ratio regulator |
| GB2556414A (en) * | 2016-09-19 | 2018-05-30 | Porsche Ag | Fuel cut-off valve |
| CN109185250A (en) * | 2018-10-09 | 2019-01-11 | 中国舰船研究设计中心 | A kind of hydraulic seawater pressure adaptive equalization device |
| CN110388489A (en) * | 2019-08-29 | 2019-10-29 | 天津航宇卓然科技有限公司 | A kind of pressure reducer of integrated overpressure protection function |
| CN112833063A (en) * | 2020-12-26 | 2021-05-25 | 哈尔滨工业大学 | Hydraulic pressure flow divider valve with multi-stage pressure feedback |
-
2015
- 2015-12-11 CN CN201510913189.8A patent/CN106870784A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2556414A (en) * | 2016-09-19 | 2018-05-30 | Porsche Ag | Fuel cut-off valve |
| GB2556414B (en) * | 2016-09-19 | 2019-11-13 | Porsche Ag | Fuel cut-off valve |
| CN108050259A (en) * | 2018-01-17 | 2018-05-18 | 无锡市华科力士水液压有限公司 | A kind of pneumatic electric ratio regulator |
| CN109185250A (en) * | 2018-10-09 | 2019-01-11 | 中国舰船研究设计中心 | A kind of hydraulic seawater pressure adaptive equalization device |
| CN110388489A (en) * | 2019-08-29 | 2019-10-29 | 天津航宇卓然科技有限公司 | A kind of pressure reducer of integrated overpressure protection function |
| CN112833063A (en) * | 2020-12-26 | 2021-05-25 | 哈尔滨工业大学 | Hydraulic pressure flow divider valve with multi-stage pressure feedback |
| CN112833063B (en) * | 2020-12-26 | 2021-09-28 | 哈尔滨工业大学 | Hydraulic pressure flow divider valve with multi-stage pressure feedback |
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Application publication date: 20170620 |