CN103115187A - High-flow high-pressure pneumatic switch valve - Google Patents
High-flow high-pressure pneumatic switch valve Download PDFInfo
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- CN103115187A CN103115187A CN2013100315384A CN201310031538A CN103115187A CN 103115187 A CN103115187 A CN 103115187A CN 2013100315384 A CN2013100315384 A CN 2013100315384A CN 201310031538 A CN201310031538 A CN 201310031538A CN 103115187 A CN103115187 A CN 103115187A
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Abstract
The invention discloses a high-flow high-pressure pneumatic switch valve which comprises a main valve and an electromagnet, wherein the electromagnet is located on the main valve and fixed on the main valve through a bolt. The electromagnet comprises an electromagnet support frame, an upper electromagnet body and a lower electromagnet body. The main valve comprises a valve body, a valve deck, a valve sleeve, a spring, a valve core seat and a valve core, wherein the valve core comprises a cone valve core body with a threaded hole, a valve core rod and a rubber ring. The high-flow high-pressure pneumatic switch valve can solve the problems that when high-pressure gas passes through an ordinary valve, the energy available value of the gas is reduced due to friction and the like, and the amount of the gas flowing through the ordinary valve is quite small, and can improve the energy utilization rate of a device in which compressed air is used for storing and supplying energy and the like; and meanwhile, the high-flow high-pressure pneumatic switch valve is simple in structure and is only composed of the electromagnet and the main valve, so that complexity and instability of the device are reduced, when the high-flow high-pressure pneumatic switch valve needs to be opened or closed, just the electromagnet needs to be powered on or powered off, the electromagnet responds fast, and therefore the response speed of opening and closing the valve is extremely high, the effect that the high-flow high-pressure pneumatic switch valve is opened and closed rapidly can be achieved, and the high-flow high-pressure pneumatic switch valve can meet the requirement on fast response of pneumatic automobiles and other vehicles.
Description
Technical field
The invention belongs to pneumatic air pressure field, particularly a kind of big-flow high-pressure pneumatic on-off valve.
Background technique
Along with the automatic technology development, pneumatics is widely used in each field gradually.In pneumatic system, realize that each function is mainly by controlling all kinds of pneumatic valves, such as selector valve, reduction valve, throttle valve etc.Usually, the pressurized gas in gas tank are to enter pneumatic circuit after reduction valve is adjusted to suitable working pressure, and decompression process is realized according to the expenditure and pressure principle, certainly will cause a large amount of energy losses of decompression process, and the decompression span is larger, and energy loss is more.
Under some special occasions, in order to store more multi-energy, the pressure of gas tank higher (greater than 23MPa), and working pressure is relatively low, if adopt the expenditure and pressure mode, can cause a large amount of energy losses.In order to overcome this contradiction, can adopt the positive displacement decompression, namely utilize the cubical expansion mode to realize decompression, the method is existing studies show that its feasibility and rationality in a large number, does not repeat them here.A critical component in the volume decompression mode is exactly the big-flow high-pressure pneumatic on-off valve.
Introduced a kind of control valve of high-pressure pneumatic switch in the document of retrieval, its design mainly is made of electromagnetic priority valve and main valve two-part, the open and close of valve control main by pilot valve move left and right realize.After electromagnetic priority valve received signal opening high pressure gas channel, because gas acts on pressure reduction on spool and the effect of spring, the main valve road was in dissengaged positions, and switch valve cuts out; After electromagnetic priority valve received signal and closes high-pressure channel, simultaneously, the release road was opened, and the highpressure active force on top becomes the barometric pressure effect, and active force sharply reduces, thereby the power that acts on the spool bottom is backed down spool, realizes the unlatching of switch valve.This invention has solved the unappeasable high pressure requirement of common high-pressure pneumatic switch valve, also can solve simultaneously the deficiency of the irreversible energy changing process that throttling control valve causes, and makes the capacity usage ratio of pressurized gas also get a promotion.But simultaneously, this design invention also has certain deficiency, as its complicated structure, comprises two parts of main valve and electromagnetic priority valve, under hyperbaric environment, the precision of electromagnetic priority valve, intensity, airtight etc. had relatively high expectations, structural complexity has increased the unstability of device.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, stability is high, is applicable to the big-flow high-pressure pneumatic on-off valve of hyperbaric environment.
The technical solution that realizes the object of the invention is:
a kind of big-flow high-pressure pneumatic on-off valve, comprise main valve and electromagnet two-part, electromagnet is positioned at above main valve, be bolted on main valve, wherein, electromagnet comprises electromagnet stent, upper electromagnet and lower electromagnet, upper electromagnet is bolted on electromagnet stent, and lower electromagnet is fastened on the part of stretching out main valve on valve core rod, main valve comprises valve body, valve gap, valve pocket, spring, valve core case and spool part, valve body is as the holder part of main valve, bottom at valve body has suction port, the top of suction port has relief opening, the valve bottom has again the lower gas guide channel that is connected with suction port, have in a side of valve body and be connected with the lower gas guide channel and vertical sidepiece gas guide path, have at the middle part of valve and be connected with the sidepiece gas guide path and vertical upper gas guide channel, have the valve pocket hole at the valve body core, bottom, valve pocket hole has lower channel, the aperture ratio valve pocket hole of lower channel is little, larger than valve core case internal orifice dimension, lower channel makes valve pocket hole and suction port be communicated with, the external diameter size of the aperture in valve pocket hole and valve pocket is identical, valve core case is positioned at bottom, valve pocket hole, step location by lower end, valve pocket hole, within valve pocket is positioned at the valve pocket hole, the lower end contacts with valve core case, the height sum of the length of valve pocket and valve core case equals the degree of depth in valve pocket hole, spring housing is on spool, spring one end contacts the other end and contacts with step on spool with valve gap, spool be positioned at valve pocket and within it section move up and down, valve gap is bolted on valve body, the upper gas guide channel of valve body, the sidepiece gas guide path, the perforate end of lower gas guide channel all seals with Screw-thread sealing plug, described spool comprises poppet valve core with threaded hole, valve core rod and rubber ring, and poppet valve core with threaded hole has the rubber ring recess, with the rubber ring adapted, screw thread has all been attacked at two ends, valve core rod up and down, lower end and poppet valve core with threaded hole are used in conjunction, upper end and lower electromagnet are used in conjunction, valve core rod has two shaft shoulders, has three seal grooves on valve core rod, and top seal groove is opened the medium position in valve core rod and valve gap contact segment, drive respectively two shaft shoulder medium positions in the bottom for another two, the shaft shoulder of valve core rod is used in conjunction with valve pocket respectively, and the seal groove that has on valve core rod is with the seal ring adapted.
The present invention compared with prior art, its remarkable advantage:
the present invention can solve pressurized gas and reduce the energy usable levels of gas because of friction etc. through common valve the time, and the problem that discharge value is less, can improve the capacity usage ratio with equipment such as compressed-air energy storage energy supplies, simultaneously, it simple in structure, only consisted of by electromagnet part and primary valve part, the ingenious pressurized gas of source of the gas that utilize of primary valve part own respectively produce an opposite effect power in the top and the bottom of spool, final makes a concerted effort in a suitable scope, making need to be by too large external force when valve is opened, and unlike more existing equipment, need source of the gas to be incorporated into valve and be incorporated into again the opening and closing that come control valve in other ball valves afterwards, complexity and the unstability of equipment have so just been reduced, when valve needs opening and closing, as long as make electromagnet get electric or outage, and the electromagnet response rapidly, thereby the opening of valve, the pass action response is exceedingly fast, can realize fast opening and closing rapidly, can satisfy Pneumatic automobile etc. to the requirement of quick response.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Description of drawings
Fig. 1 is erection drawing schematic diagram of the present invention.
Fig. 2 is the valve gap schematic diagram.
Embodiment
a kind of big-flow high-pressure pneumatic on-off valve of the present invention, comprise main valve and electromagnet two-part, electromagnet is positioned at above main valve, be bolted on main valve, wherein, electromagnet comprises electromagnet stent 1, upper electromagnet 2 and lower electromagnet 3 are (due to the restriction in space, single electromagnet can not provide enough suction, use two electromagnet herein), upper electromagnet 2 is bolted on electromagnet stent 1, lower electromagnet 3 is fastened on the part of stretching out main valve on valve core rod 29, the electromagnet stent central upper portion has counterbore, be used for fixing electromagnet, simultaneously have counterbore on four cylindrical bodys of electromagnet stent, so that electromagnet stent is fixed on valve gap, main valve comprises valve body 10, valve gap 4, valve pocket 12, spring 11, valve core case 14 and spool part, valve body 10 is as the holder part of main valve, have suction port 16 in the bottom of valve body, the top of suction port 16 has relief opening 12, the valve bottom has again the lower gas guide channel 18 that is connected with suction port 16, have in a side of valve body and be connected with lower gas guide channel 18 and vertical sidepiece gas guide path 23, have at the middle part of valve and be connected with sidepiece gas guide path 23 and vertical upper gas guide channel 25, have the valve pocket hole at the valve body core, bottom, valve pocket hole has lower channel 17, the aperture ratio valve pocket hole of lower channel 17 is little, larger than valve core case 14 internal orifice dimensions, lower channel 17 makes valve pocket hole and suction port 16 be communicated with, the external diameter size of the aperture in valve pocket hole and valve pocket 12 is identical, valve core case 14 is positioned at bottom, valve pocket hole, step location by lower end, valve pocket hole, valve core case 14 centers have circular hole, circular hole upper end chamfer, the lower end rounding, the valve core case side has seal groove, with valve core case seal ring 20 adapteds, within valve pocket 12 is positioned at the valve pocket hole, the lower end contacts with valve core case 14, the height sum of the length of valve pocket 12 and valve core case 14 equals the degree of depth in valve pocket hole, the side of valve pocket 12 underparts has the big or small identical hole of relief opening 12 of size and valve body, these two hole alignment during assembling, the common relief opening that forms valve, valve pocket 12 sides, middle part have the identical hole of gas guide path hole size at a size and valve body middle part, this two holes alignment during assembling, the valve pocket endoporus is divided into three parts that diameter is different, lower stomidium facilitates moving up and down of valve cone core 21, upper end and middle coaxial aperture aperture difference have strict demand, be key point of the present invention, can the magnitude relationship of this difference to opening and cut-off valve, spring 11 is enclosed within on spool, spring 11 1 ends contact the other end and contact with step on spool with valve gap 4, the size of the elastic coefficient has strict demand, the size of the power that it provides should make the valve auto lock, valve can be opened when less power, spool be positioned at valve pocket 12 and within it section move up and down, valve gap 4 is bolted on valve body 10, valve gap 4 has round end counterbore and tapped hole, the round end counterbore is used for making valve gap to be connected with valve body, fixing, and play the effect of sealing, tapped hole is used for fixing electromagnet stent, the upper gas guide channel 25 of valve body 10, sidepiece gas guide path 23, the perforate end of lower gas guide channel 18 all seals with Screw-thread sealing plug, described spool comprises poppet valve core with threaded hole 21, valve core rod 29 and rubber ring 13, and poppet valve core 21 with threaded hole has the rubber ring recess, with rubber ring 13 adapteds, valve core rod has all been attacked screw thread in two ends Shang Xia 29, lower end and poppet valve core with threaded hole are used in conjunction, upper end and lower electromagnet 3 are used in conjunction, valve core rod 29 has two shaft shoulders, has three seal grooves on valve core rod 29, and top seal groove is opened at the medium position of valve core rod 29 with the valve gap contact segment, drive respectively two shaft shoulder medium positions in the bottom for another two, the shaft shoulder of valve core rod 29 is used in conjunction with valve pocket 12 respectively, and the seal groove that has on valve core rod is with the seal ring adapted.
Described suction port 16 is connected with relief opening and is attacked the screw thread that connects use.
Described rubber ring 13 is the vulcanized rubber circle, and described rubber ring recess is the vulcanized rubber ring recess.
Describe details and the working condition of the concrete device that proposes according to the present invention in detail below in conjunction with Fig. 1 and Fig. 2.
This high-pressure pneumatic switch valve utilizes under uniform pressure, the varying in size of the power that gas produces the spool cross sections of different sizes, relend help spring pre-tightening, electromagnet suction be used for quick closedown and open valve.as shown in Figure 1, after suction port 16 links together with high pressure gas holder, pressurized gas enter in valve by suction port 16 through connection set, be divided into afterwards two branch roads, part gas enters into cavity of resorption 19 by lower channel 17, cavity of resorption 19 is by poppet valve core with threaded hole 21, valve core case 14, and the space surrounding such as vulcanized rubber circle 13, and gas enters into the power that makes progress (establishing this power is F1) that poppet valve core with threaded hole 21 is produced after cavity of resorption vertical valve core bar 29 cross sections, another part gas enters into the sidepiece gas guide path 23 of valve body 10 through lower gas guide channel 18, enter into epicoele 27 by upper gas guide channel 25 at last, wherein epicoele 27 is by valve pocket 7, valve core rod 29, and valve gap 4 sealings form, after pressurized gas enter into epicoele 27, the downward active force (establishing this power is F2) that valve core rod 29 is had vertical its cross section, due to the acting surface 15 of gas at cavity of resorption 19, its size equals the cross sectional area of the endoporus of valve core case 14, deduct the cross section on valve core rod 29 tops for the endoporus cross section on valve pocket 7 tops at the acting surface 26 of epicoele, wherein go up acting surface and be a bit larger tham lower acting surface, and barometric pressure can be ignored to the active force of valve core rod 29, thereby, valve core rod 29 is the transversal prone of vertical valve core bar 29 under the pressurized gas effect with joint efforts all the time, and spring herein 6 is to be in compressive state after valve gap 4 is fixed tightly, active force downward (establishing this power is F3) to valve core rod 29, therefore valve core rod 29 is downward with joint efforts all the time when cutting off the power supply at upper electromagnet 2 with lower electromagnet 3, like this, vulcanized rubber circle 13 on poppet valve core 21 with threaded hole is pressed on valve pocket base 14 tightly, valve is in closed condition all the time like this.open the lower gas guide channel 18 on valve body 10, sidepiece gas guide path 23, the opening end of upper gas guide channel 25 all is equipped with end socket, in order to avoid gas leak, the aperture of boss that is used for supporting valve pocket base 14 in valve body 10 is larger than the aperture of valve base, valve pocket base 14 endoporus lower end roundings, frictional loss during with the minimizing gas flow, upper end end face chamfer, vulcanized rubber circle 13 is fully contacted with valve pocket base 14, can not make Leakage Gas, simultaneously, valve pocket base 14 sides have O RunddichtringO groove, to guarantee that valve gas when closing can not spill from the gap between valve pocket base 14 and valve body 10.the design of valve pocket 7: the aperture on its top is identical with gas pilot hole 25 sizes, when assembling and coaxial installing, the size in the hole that the bottom is connected with relief opening 12 is identical with relief opening 12, and coaxial when assembling, the endoporus requirement on machining accuracy of valve pocket 7 is higher, to guarantee that the up and down pressure difference value is in the needs scope, the seal groove of opening on valve pocket respectively with valve pocket on seal ring 5, in valve pocket, seal ring 8, 9 assemblings of valve pocket lower seal are used, the gas that on valve pocket wherein, seal ring 5 plays in airtight epicoele 27 can not spill from the gap between valve pocket 7 and valve gap 4, in close valve pocket seal ring 8 with the gas that prevents 25 places, gas channeling hole from the air gap leakage between valve pocket and valve body, valve pocket lower seal 9 can not enter into lumen 22 from the gap of 10 of valve pocket 7 and valve bodies to guarantee gas, lumen 22 is by valve pocket 7, valve core case 14, valve core rod 29, poppet valve core 21 with threaded hole consists of.Valve core rod has been attacked respectively screw thread in two ends Shang Xia 29, the lower end is used for being connected with poppet valve core 21 with threaded hole, the upper end is used for fixedly lower electromagnet 3, valve core rod 29 size of diameter everywhere needs strict cooperation and the acting surface size of controlling with assurance and valve pocket, simultaneously, in the valve core rod lower seal 11 that is used in conjunction with valve core rod 29, valve core rod on seal ring 24, valve core rod seal ring 28 can guarantee valve core rod no matter the gas can guarantee valve in static state or dynamic process in can not leak.It is to be connected by four bolts that valve gap 4 is connected with valve body.Electromagnet stent 1 is fixed on valve gap by hexagon socket head cap screw, and the bolt hole that has on valve gap is used for Motionless electromagnetic retort stand 1, and cantilever tip has the counterbore for the assembling hexagon socket head cap screw, and is used for fixing electromagnet 2.After upper electromagnet 2, lower electromagnet 3 energisings, valve core rod there is a pulling force that makes progress (establishing this power is F4), like this, the F1+F2+F3+F4 that makes a concerted effort to be that valve core rod is subject to, and | F4| is greater than | F1+F2+F3|, therefore resultant direction is upwards, thus upper electromagnet 2, lower electromagnet 3 electric after, what valve core rod 29 was subject to makes a concerted effort upwards, valve core rod 29 moves up, until two electromagnetic actuation contacts move on spool, valve is opened, gas enters lumen 22, and discharges from relief opening 12.
When not connecing source of the gas: valve is under spring 6 effects, and valve is in closed condition all the time.
When connecting the outage of source of the gas electromagnet: gas enters cavity of resorption 19 by inlet hole 16 parts, valve core rod 29 is produced pressure F1, a part enters lower gas guide channel 18, sidepiece gas guide path 23, upper gas guide channel 25, enter again epicoele 27, valve core rod is produced pressure F2, and under spring force F3 effect, the power that valve core rod 29 is subject to is downward all the time, valve cuts out, and does not have gas to discharge.
Connecting the source of the gas electromagnet gets when electric: the power F4 that upper electromagnet 2, lower electromagnet 3 produce makes on valve core rod 29 and moves, until upper electromagnet 2, the complete adhesive of lower electromagnet 3, at this moment, valve is opened, and gas enters into lumen 22 by cavity of resorption 19 and from relief opening 12 discharges.When electromagnet cuts off the power supply, under the effect of F1+F2+F3, the valve autoshutdown.
Claims (3)
1. big-flow high-pressure pneumatic on-off valve, it is characterized in that: comprise main valve and electromagnet two-part, electromagnet is positioned at above main valve, be bolted on main valve, wherein, electromagnet comprises electromagnet stent (1), upper electromagnet (2) and lower electromagnet (3), upper electromagnet (2) is bolted on electromagnet stent (1), and lower electromagnet (3) is fastened on the part of stretching out main valve on valve core rod (29), main valve comprises valve body (10), valve gap (4), valve pocket (12), spring (11), valve core case (14) and spool part, valve body (10) is as the holder part of main valve, have suction port (16) in the bottom of valve body, the top of suction port (16) has relief opening (12), the valve bottom has again the lower gas guide channel (18) that is connected with suction port (16), have in a side of valve body and be connected with lower gas guide channel (18) and vertical sidepiece gas guide path (23), have at the middle part of valve and be connected with sidepiece gas guide path (23) and vertical upper gas guide channel (25), have the valve pocket hole at the valve body core, bottom, valve pocket hole has lower channel (17), the aperture ratio valve pocket hole of lower channel (17) is little, larger than valve core case (14) internal orifice dimension, lower channel (17) makes valve pocket hole and suction port (16) be communicated with, the aperture in valve pocket hole is identical with the external diameter size of valve pocket (12), valve core case (14) is positioned at bottom, valve pocket hole, step location by lower end, valve pocket hole, within valve pocket (12) is positioned at the valve pocket hole, the lower end contacts with valve core case (14), the height sum of the length of valve pocket (12) and valve core case (14) equals the degree of depth in valve pocket hole, spring (11) is enclosed within on spool, spring (11) one ends contact the other end and contact with step on spool with valve gap (4), spool be positioned at valve pocket (12) and within it section move up and down, valve gap (4) is bolted on valve body (10), the upper gas guide channel (25) of valve body (10), sidepiece gas guide path (23), the perforate end of lower gas guide channel (18) all seals with Screw-thread sealing plug, described spool comprises poppet valve core with threaded hole (21), valve core rod (29) and rubber ring (13), and poppet valve core with threaded hole (21) has the rubber ring recess, with rubber ring (13) adapted, screw thread has all been attacked at two ends, valve core rod (29) up and down, lower end and poppet valve core with threaded hole are used in conjunction, upper end and lower electromagnet (3) are used in conjunction, valve core rod (29) has two shaft shoulders, have three seal grooves on valve core rod (29), top seal groove is opened at the medium position of valve core rod (29) with the valve gap contact segment, drive respectively two shaft shoulder medium positions in the bottom for another two, the shaft shoulder of valve core rod (29) is used in conjunction with valve pocket (12) respectively, the seal groove that has on valve core rod is with the seal ring adapted.
2. a kind of big-flow high-pressure pneumatic on-off valve according to claim 1, it is characterized in that: described suction port (16) is connected 12 with relief opening) attack the screw thread that connects use.
3. a kind of big-flow high-pressure pneumatic on-off valve according to claim 1, it is characterized in that: described rubber ring (13) is the vulcanized rubber circle, and described rubber ring recess is the vulcanized rubber ring recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310031538.4A CN103115187B (en) | 2013-01-28 | 2013-01-28 | High-flow high-pressure pneumatic switch valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310031538.4A CN103115187B (en) | 2013-01-28 | 2013-01-28 | High-flow high-pressure pneumatic switch valve |
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| CN103115187A true CN103115187A (en) | 2013-05-22 |
| CN103115187B CN103115187B (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310031538.4A Expired - Fee Related CN103115187B (en) | 2013-01-28 | 2013-01-28 | High-flow high-pressure pneumatic switch valve |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179789A (en) * | 2015-10-18 | 2015-12-23 | 宜宾三江机械有限责任公司 | Direct action type electric control on-off valve |
| CN106122152A (en) * | 2016-08-31 | 2016-11-16 | 山东泰丰液压股份有限公司 | Ultra high pressure control valve |
| CN106438583A (en) * | 2016-10-11 | 2017-02-22 | 上海航天控制技术研究所 | Novel large-flow and small-inner-leakage-flow direct-acting type overflow valve |
| CN107883000A (en) * | 2016-09-29 | 2018-04-06 | 南京理工大学 | A kind of high-pressure high-flow air-powered electromagnetic switch valve |
| CN108930826A (en) * | 2017-05-24 | 2018-12-04 | 慈溪市维克多自控元件有限公司 | A kind of memory altitude valve, Aerostats armchair seat and automobile |
| CN111237493A (en) * | 2020-03-09 | 2020-06-05 | 厦门大学 | Effectively reduce slide valve of wearing and tearing |
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| CN1386992A (en) * | 2002-05-24 | 2002-12-25 | 浙江大学 | Control valve of high-pressure pneumatic switch |
| US20090145513A1 (en) * | 2007-12-06 | 2009-06-11 | Mckee Joseph R | Gas supply system for pneumatic store ejection utilizing a removable, replaceable and on-board rechargeable gas storage vessel |
| EP2116437A2 (en) * | 2008-04-09 | 2009-11-11 | WABCO GmbH | Switching magnetic valve |
| CN203115250U (en) * | 2013-01-28 | 2013-08-07 | 南京理工大学 | Large-flow high-pressure pneumatic switching valve |
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2013
- 2013-01-28 CN CN201310031538.4A patent/CN103115187B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1386992A (en) * | 2002-05-24 | 2002-12-25 | 浙江大学 | Control valve of high-pressure pneumatic switch |
| US20090145513A1 (en) * | 2007-12-06 | 2009-06-11 | Mckee Joseph R | Gas supply system for pneumatic store ejection utilizing a removable, replaceable and on-board rechargeable gas storage vessel |
| EP2116437A2 (en) * | 2008-04-09 | 2009-11-11 | WABCO GmbH | Switching magnetic valve |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179789A (en) * | 2015-10-18 | 2015-12-23 | 宜宾三江机械有限责任公司 | Direct action type electric control on-off valve |
| CN106122152A (en) * | 2016-08-31 | 2016-11-16 | 山东泰丰液压股份有限公司 | Ultra high pressure control valve |
| CN107883000A (en) * | 2016-09-29 | 2018-04-06 | 南京理工大学 | A kind of high-pressure high-flow air-powered electromagnetic switch valve |
| CN107883000B (en) * | 2016-09-29 | 2019-06-25 | 南京理工大学 | A kind of high-pressure high-flow air-powered electromagnetic switch valve |
| CN106438583A (en) * | 2016-10-11 | 2017-02-22 | 上海航天控制技术研究所 | Novel large-flow and small-inner-leakage-flow direct-acting type overflow valve |
| CN108930826A (en) * | 2017-05-24 | 2018-12-04 | 慈溪市维克多自控元件有限公司 | A kind of memory altitude valve, Aerostats armchair seat and automobile |
| CN111237493A (en) * | 2020-03-09 | 2020-06-05 | 厦门大学 | Effectively reduce slide valve of wearing and tearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103115187B (en) | 2015-03-11 |
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