CN1699808A - Slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve - Google Patents
Slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve Download PDFInfo
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- CN1699808A CN1699808A CN 200510050175 CN200510050175A CN1699808A CN 1699808 A CN1699808 A CN 1699808A CN 200510050175 CN200510050175 CN 200510050175 CN 200510050175 A CN200510050175 A CN 200510050175A CN 1699808 A CN1699808 A CN 1699808A
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Abstract
The invention discloses a slide valve pilot super high-pressure air power proportional reduction valve. It comprises a pilot valve and a main valve installed on the same valve body under the control of the proportional electromagnet. The air pressure of the lead valve can control the output pressure of the main valve. The lead valve applying C-type semi-bridge structure, the air of the semi-bridge is drawn from the high air pressure inlet of the main valve, the pilot valve under the control of the proportional electromagnet forms the inlet dynamic air damp; the outlet of the semi-bridge is connected with the outlet of the reduction valve, and a fixing air damp is arranged between them forming the fixing air damp of the outlet. The pressure-regulating chamber is on the dynamic balance status under the control of the pilot valve. The valve just uses a proportional electromagnet. When the system is out of power, the pilot valve and main valve will close automatically with the function of resetting spring and air pressure. When the system pressure is higher than expected, air can release pressure via the dismountable security valve.
Description
Technical field
The present invention relates to pneumatic pressure-release valve, relate in particular to a kind of slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve.
Background technique
Generally be stored at pneumatic high-voltage field pressurized gas at present in the container such as high pressure gas holder, reduce to suitable pressure by reduction valve then and use, and present stage reduction valve mostly be manually-operable, automaticity is low, inconvenient operation, governing speed is slow, and Security also can not get guaranteeing; A small amount of electronic control pressure reducing valve delivery pressure is lower, and all below 10Mpa, and output flow is little, it is inconvenient to regulate.Particularly require the fast occasion of variation in pressure to press at some ultra-high pressure high flows and can realize the ultra-high pressure high flow pneumatic pressure-release valve of control automatically.
Summary of the invention
The object of the present invention is to provide structure simpler, a kind of slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve that pressure controling precision is higher.
The technical solution adopted for the present invention to solve the technical problems is:
It comprises pilot valve and the main valve on the same valve body of being contained in proportion electro-magnet control.Promptly have screw and be connected mutually with first screw plug in valve body upper end, first screw plug and valve body seal with the O rubber seal, have feedback cavity in first screw plug, the valve core of main valve of overcoat valve core of main valve spring is housed in the feedback cavity, teflon seal element by compacting in the valve core of main valve between valve core of main valve and the valve body seals, seal with O type rubber seal between the valve core of main valve and first screw plug, the valve core of main valve push rod is with piston spring outward, one end and the valve core of main valve of valve core of main valve push rod are connected by screw thread, the other end of valve core of main valve push rod contacts with piston, seal by O type rubber seal between piston and the valve body, have pressure regulating cavity in the piston, have the aperture that is communicated with pressure regulating cavity and exhaust in the middle of the piston, valve body lower end is by second screw plug and the sealing of O type rubber seal, valve core of main valve and valve core of main valve push rod center all have elongated hole, are communicated with exhaust cavity and feedback cavity; Air-inlet cavity is communicated with the suction port of pilot valve, pressure regulating cavity is communicated with the air outlet of pilot valve, pressurized gas through suction port to air-inlet cavity, export one route valve core of main valve place restriction, exhaust cavity to air outlet, another road passes to the main valve pressure regulating cavity through guide's valve pocket and pilot valve core, exports via aperture to exhaust cavity to air outlet in the middle of the piston again.
Described pilot valve is the series air-resistances pilot valve, its pilot valve upper end cap and O type rubber seal seal with the end of screw with pilot valve, the guide's valve pocket that pilot valve core is housed in the pilot valve cavity and closely contacts with the pilot valve core side face, seal with O type rubber seal between guide's valve pocket and the valve body, pilot valve core one end contacts with the pilot valve spring, the other end contacts with the push rod of proportion electro-magnet, pilot valve core adopts the air inlet restriction and the throttling two-stage restriction cascaded structure of giving vent to anger, and the centre has the hole that connects suction port and air outlet; Pilot gas is drawn the autonomous valve air-inlet cavity and is passed to the main valve pressure regulating cavity via guide's valve pocket and pilot valve core.
Described pilot valve outlet port also is connected to dismountable safety valve, seal membrane compresses by preloading spring in the safety valve and Safety valve body, the adjustment screw of adjusting safety pressure is connected and compresses the preloading spring of safety valve with Safety valve body by screw thread, the safety valve end cap is connected with Safety valve body by screw thread, has the exhaust port of symmetric arrangement around the Safety valve body.
The beneficial effect that the present invention has is: utilize pilot gas control main valve opening to realize expenditure and pressure, the pilot valve of proportion electro-magnet control adopts electric feedback technique, control in conjunction with PID, reaction velocity and control accuracy have been improved, full-automatic pressure control can be realized, telecontrol can be conveniently realized in addition.Only used a proportion electro-magnet among the present invention, structure and control are comparatively simple.Pilot valve and main valve can be closed under spring and gas pressure automatically when system's power down.The incoming pressure height of system design, the delivery pressure scope is big, precision is high, the output flow height.The highest incoming pressure of system is 31.5MPa, and this moment, delivery pressure was in can being stabilized in 8～25MPa scope.When unexpected the rising appearred in system pressure, gas can be by the exhaust port release pressure on the safety valve.
Description of drawings
Accompanying drawing is a structural principle schematic representation of the present invention.
Among the figure: 1, second screw plug, 2, O type rubber seal, 3, valve body, 4, piston, 5, O type rubber seal, 6, piston spring, 7, the valve core of main valve push rod, 8, the teflon seal element, 9, valve core of main valve, 10, O type rubber seal, 11, first screw plug, 12, the valve core of main valve spring, 13, the O rubber seal, 14, the pilot valve upper end cap, 15, the pilot valve spring, 16, screw, 17, O type rubber seal, 18, pilot valve core, 19, guide's valve pocket, 20, O type rubber seal, 21, proportion electro-magnet, 22, the safety valve end cap, 23, adjust screw, 24, the safety valve preloading spring, 25, seal membrane, 26, Safety valve body, a, air-inlet cavity, b, exhaust cavity, c, pressure regulating cavity, f, feedback cavity, h, exhaust port.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in drawings, the present invention includes pilot valve and the main valve on the same valve body of being contained in proportion electro-magnet control.Promptly have screw and be connected mutually with first screw plug 11 in valve body 3 upper ends, first screw plug 11 and 13 sealings of valve body 3 usefulness O rubber seal, have feedback cavity f in first screw plug 11, the valve core of main valve 9 of overcoat valve core of main valve spring 12 is housed in the feedback cavity f, teflon seal element 8 by compacting in the valve core of main valve 9 between valve core of main valve 9 and the valve body 3 seals, seal with O type rubber seal 10 between the valve core of main valve 9 and first screw plug 11, the valve core of main valve push rod 7 outer piston springs 6 that are with, one end of valve core of main valve push rod 7 and valve core of main valve 9 are connected by screw thread, the other end of valve core of main valve push rod 7 contacts with piston 4, seal by O type rubber seal 5 between piston 4 and the valve body 3, have pressure regulating cavity c in the piston 4, have the aperture that is communicated with pressure regulating cavity c and exhaust cavity b in the middle of the piston 4, valve body 3 lower ends are by second screw plug 1 and 2 sealings of O type rubber seal, valve core of main valve 9 and valve core of main valve push rod 7 centers all have elongated hole, are communicated with exhaust cavity b and feedback cavity f; Air-inlet cavity a is communicated with the suction port of pilot valve, pressure regulating cavity c is communicated with the air outlet of pilot valve, pressurized gas through suction port to air-inlet cavity a, one route valve core of main valve place restriction, exhaust cavity b export to the air outlet, another road passes to main valve pressure regulating cavity c through guide's valve pocket 19 and pilot valve core 18, exports to the air outlet to exhaust cavity b via apertures in the middle of the piston 4 again.
Described pilot valve is the sliding valve style pilot valve, its pilot valve upper end cap 14 and O type rubber seal 17 usefulness screws 16 are with the end sealing of pilot valve, the guide's valve pocket 19 that pilot valve core 18 is housed in the pilot valve cavity and closely contacts with pilot valve core 18 side faces, seal with O type rubber seal 20 between guide's valve pocket 19 and the valve body 3, pilot valve core 18 1 ends contact with pilot valve spring 15, the other end contacts with the push rod of proportion electro-magnet 21, pilot valve core 18 adopts the air inlet restriction and the throttling two-stage restriction cascaded structure of giving vent to anger, and the centre has the hole that connects suction port and air outlet; Pilot gas is drawn the autonomous valve air-inlet cavity and is passed to main valve pressure regulating cavity c via guide's valve pocket 19 and pilot valve core 18.
Described pilot valve outlet port also is connected to dismountable safety valve, seal membrane 25 compresses by preloading spring in the safety valve 24 and Safety valve body 26, the adjustment screw 23 of adjusting safety pressure is connected and compresses the preloading spring 24 of safety valve with Safety valve body 26 by screw thread, safety valve end cap 22 is connected with Safety valve body 26 by screw thread, has the exhaust port h of symmetric arrangement around the Safety valve body 26.
Working principle of the present invention is: utilize pilot gas control main valve opening to realize expenditure and pressure, the control of pilot gas flow is realized by the aperture of proportion electro-magnet (as GP45A4-AIW9) 21 control pilot valve cores.When just starting working, valve core of main valve 9 and pilot valve core 18 all are in closed condition, after electrical-controller obtains the delivery pressure signal, control ratio electromagnet 21 is opened pilot valve core, shallow bid gas enters pressure regulating cavity c via pilot valve, opens valve core of main valve 9 thereby promote piston 4, realizes decompression output.While electrical-controller detected gas delivery pressure, continuous and setting pressure compares, and the aperture in conjunction with PID control dynamic adjustments pilot valve core 9 makes delivery pressure be stabilized near the maintenance transient equiliblium of setting pressure.When output flow was zero, pilot valve core 18 and valve core of main valve 9 all remained static, and delivery pressure remains unchanged; When the setting delivery pressure is zero, controller is closed pilot valve core 18 with passing ratio electromagnet 21, pressure regulating cavity can not get pressure and replenishes, pressure drops to identical with delivery pressure gradually, because piston 4 is bigger with the compression area of exhaust cavity b homonymy, piston 4 moves down, and valve core of main valve 9 also will be closed under the pressure difference effect of Returnning spring and both sides, thereby close main valve, this moment, delivery pressure was zero.Under the situation of the unexpected power down of system, pilot valve core 18 is closed under the pressure difference of Returnning spring and gas, and this moment, the main valve delivery pressure also was zero.In the decompression process, the gas of pressure regulating cavity c is in the state of transient equiliblium, and its pressure size is between suction pressure and go out between the atmospheric pressure.When unexpected the rising appearred in system pressure, gas can be by the exhaust port h release pressure on the safety valve.
In the decompression process, the apertures in the middle of the main valve piston 4 constitute the fixed-size fixed gas damping of damping, constitute the dynamic gas damping of input end and a C type half-bridge is formed in the fixed gas damping of output terminal by the pilot valve of proportion electro-magnet 21 controls.The gas of pressure regulating cavity is in transient equiliblium, and its pressure size is between suction pressure and go out between the atmospheric pressure.When unexpected the rising appearred in system pressure, gas can be by the exhaust port h release pressure on the safety valve.
Claims (3)
1, slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve is characterized in that: it comprises pilot valve and the main valve on the same valve body (3) of being contained in proportion electro-magnet (21) control; Promptly have screw and be connected mutually with first screw plug (11) in valve body (3) upper end, first screw plug (11) seals with O rubber seal (13) with valve body (3), have feedback cavity (f) in first screw plug (11), the valve core of main valve (9) of overcoat valve core of main valve spring (12) is housed in the feedback cavity (f), teflon seal element (8) by compacting in the valve core of main valve (9) between valve core of main valve (9) and the valve body (3) seals, seal with O type rubber seal (10) between valve core of main valve (9) and first screw plug (11), the outer piston spring (6) that is with of valve core of main valve push rod (7), one end of valve core of main valve push rod (7) and valve core of main valve (9) are connected by screw thread, the other end of valve core of main valve push rod (7) contacts with piston (4), seal by O type rubber seal (5) between piston (4) and the valve body (3), have pressure regulating cavity (c) in the piston (4), have the aperture that is communicated with pressure regulating cavity (c) and exhaust cavity (b) in the middle of the piston (4), valve body (3) lower end is by second screw plug (1) and O type rubber seal (2) sealing, valve core of main valve (9) and valve core of main valve push rod (7) center all have elongated hole, are communicated with exhaust cavity (b) and feedback cavity (f); Air-inlet cavity (a) is communicated with the suction port of pilot valve, pressure regulating cavity (c) is communicated with the air outlet of pilot valve, pressurized gas through suction port to air-inlet cavity (a), one route valve core of main valve place restriction, exhaust cavity (b) are exported to the air outlet, another road passes to main valve pressure regulating cavity (c) through guide's valve pocket (19) and pilot valve core (18), exports to the air outlet via aperture to exhaust cavity (b) in the middle of the piston (4) again.
2, slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve according to claim 1, it is characterized in that: described pilot valve is the sliding valve style pilot valve, its pilot valve upper end cap (14) and O type rubber seal (17) seal with the end of screw (16) with pilot valve, the guide's valve pocket (19) that pilot valve core (18) is housed in the pilot valve cavity and closely contacts with pilot valve core (18) side face, seal with O type rubber seal (20) between guide's valve pocket (19) and the valve body (3), pilot valve core (18) one ends contact with pilot valve spring (15), the other end contacts with the push rod of proportion electro-magnet (21), pilot valve core (18) adopts the air inlet restriction and the throttling two-stage restriction cascaded structure of giving vent to anger, and the centre has the hole that connects suction port and air outlet; Pilot gas is drawn the autonomous valve air-inlet cavity and is passed to main valve pressure regulating cavity c via guide's valve pocket (19) and pilot valve core (18).
3, slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve according to claim 1 and 2, it is characterized in that: described pilot valve outlet port also is connected to dismountable safety valve, seal membrane (25) compresses by preloading spring (24) in the safety valve and Safety valve body (26), the adjustment screw (23) of adjusting safety pressure is connected and compresses the preloading spring (24) of safety valve by screw thread and Safety valve body (26), safety valve end cap (22) is connected with Safety valve body (26) by screw thread, and Safety valve body (26) has the exhaust port (h) of symmetric arrangement all around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510050175 CN1699808A (en) | 2005-06-20 | 2005-06-20 | Slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510050175 CN1699808A (en) | 2005-06-20 | 2005-06-20 | Slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1699808A true CN1699808A (en) | 2005-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510050175 Pending CN1699808A (en) | 2005-06-20 | 2005-06-20 | Slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve |
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| CN (1) | CN1699808A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672388B (en) * | 2009-09-28 | 2010-12-29 | 常州市汇丰船舶附件制造有限公司 | High-pressure pressure-reducing valve set |
| CN102785656A (en) * | 2012-09-05 | 2012-11-21 | 湖南明鼎科技有限公司 | Air valve for use in track traction driver brake controller system and control method of air valve |
| CN102818023A (en) * | 2012-09-03 | 2012-12-12 | 圣邦集团有限公司 | Sealing structure of fabrication hole |
| CN102878130A (en) * | 2011-07-11 | 2013-01-16 | 上海立新液压有限公司 | Electrically modulated proportional throttle control valve |
| CN103090070A (en) * | 2011-11-02 | 2013-05-08 | 广西柳工机械股份有限公司 | Piloted type pressure reducing valve |
| CN103671324A (en) * | 2013-12-06 | 2014-03-26 | 陕西法士特齿轮有限责任公司 | Two-stage control valve used for controlling hydraulic transmission mechanical pressure |
| CN104696557A (en) * | 2013-12-04 | 2015-06-10 | 上海宇航系统工程研究所 | Pressure adjuster |
| 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 |
| CN111692148A (en) * | 2020-04-30 | 2020-09-22 | 武汉船用机械有限责任公司 | Safety valve for hydraulic pump |
| CN113738918A (en) * | 2021-11-08 | 2021-12-03 | 艾肯（江苏）工业技术有限公司 | Pressure reducing valve with accurate pressure limiting setting function |
-
2005
- 2005-06-20 CN CN 200510050175 patent/CN1699808A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672388B (en) * | 2009-09-28 | 2010-12-29 | 常州市汇丰船舶附件制造有限公司 | High-pressure pressure-reducing valve set |
| CN102878130A (en) * | 2011-07-11 | 2013-01-16 | 上海立新液压有限公司 | Electrically modulated proportional throttle control valve |
| CN103090070A (en) * | 2011-11-02 | 2013-05-08 | 广西柳工机械股份有限公司 | Piloted type pressure reducing valve |
| CN102818023A (en) * | 2012-09-03 | 2012-12-12 | 圣邦集团有限公司 | Sealing structure of fabrication hole |
| CN102785656A (en) * | 2012-09-05 | 2012-11-21 | 湖南明鼎科技有限公司 | Air valve for use in track traction driver brake controller system and control method of air valve |
| CN104696557A (en) * | 2013-12-04 | 2015-06-10 | 上海宇航系统工程研究所 | Pressure adjuster |
| CN104696557B (en) * | 2013-12-04 | 2017-03-01 | 上海宇航系统工程研究所 | A kind of pressure regulator |
| CN103671324A (en) * | 2013-12-06 | 2014-03-26 | 陕西法士特齿轮有限责任公司 | Two-stage control valve used for controlling hydraulic transmission mechanical pressure |
| 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 |
| CN111692148A (en) * | 2020-04-30 | 2020-09-22 | 武汉船用机械有限责任公司 | Safety valve for hydraulic pump |
| CN113738918A (en) * | 2021-11-08 | 2021-12-03 | 艾肯（江苏）工业技术有限公司 | Pressure reducing valve with accurate pressure limiting setting function |
| CN113738918B (en) * | 2021-11-08 | 2022-02-08 | 艾肯（江苏）工业技术有限公司 | Pressure reducing valve with accurate pressure limiting setting function |
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