WO2017156831A1 - Soupape proportionnelle à gaz - Google Patents

Soupape proportionnelle à gaz Download PDF

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Publication number
WO2017156831A1
WO2017156831A1 PCT/CN2016/080403 CN2016080403W WO2017156831A1 WO 2017156831 A1 WO2017156831 A1 WO 2017156831A1 CN 2016080403 W CN2016080403 W CN 2016080403W WO 2017156831 A1 WO2017156831 A1 WO 2017156831A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
gas proportional
spring
port
seal
Prior art date
Application number
PCT/CN2016/080403
Other languages
English (en)
Chinese (zh)
Inventor
梁国荣
易青伟
Original Assignee
芜湖美的厨卫电器制造有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN201610149227.1A external-priority patent/CN105626874A/zh
Priority claimed from CN201620201556.1U external-priority patent/CN205503997U/zh
Application filed by 芜湖美的厨卫电器制造有限公司 filed Critical 芜湖美的厨卫电器制造有限公司
Publication of WO2017156831A1 publication Critical patent/WO2017156831A1/fr

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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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces

Definitions

  • the invention relates to the technical field of gas appliances, and in particular to a gas proportional valve.
  • the gas proportional valve is the core control component of the gas appliance. Through the pressure regulation and voltage regulation function of the gas proportional valve, the output pressure can be stabilized under the condition that the gas inlet pressure fluctuates. At the same time, the gas proportional valve also has the function of opening and closing the gas pipeline, and the gas passage can be disconnected in the state where the gas appliance is closed, the flow and leakage of the gas are prevented, and the safety of the user is protected.
  • the gas proportional valve in the related art when not working, relies on a spring under the valve core to push the valve core and the sealing member to abut against the valve port, thereby functioning as a gas passage.
  • the seal will be subjected to the downward pressure of the air pressure in the air inlet chamber, which will weaken the tightness of the seal and the valve port and reduce the sealing performance here; when the air pressure changes, here Sealing may be lost, causing gas leaks and causing safety incidents.
  • the inlet pressure directly acts on the diaphragm.
  • the outlet pressure is hindered by the back pressure; when the intake pressure is increased, the pressure acting on the diaphragm is continuously increased. It is easy to form turbulence at the valve port, and the valve core generates excitation, causing fluctuations in the outlet pressure and even noise.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a gas proportional valve which has the advantages of good sealing performance and high service life.
  • a gas proportional valve includes: a valve body having a first valve chamber, a second valve chamber, and a valve port formed therein, a lower end of the valve port communicating with the first valve chamber and an upper end communicating with the valve body a second valve chamber, the first valve chamber is connected with an air inlet, the second valve chamber is connected with an air outlet; a spool assembly, the valve assembly is open and closed at a position of the valve port in an up and down direction Movably disposed between the valve body, the valve core assembly includes a valve core and a seal, the seal is disposed on the valve core, and the valve core assembly is closed when the valve port is closed a seal member abutting the valve port; driving a reset member, the drive reset member being respectively connected to the valve body and the spool assembly, the drive reset member for driving the spool to open or The valve port is closed.
  • the gas proportional valve of the present invention by changing the flow direction of the gas in the valve body, the gas source passage is changed, and the reverse intake air is used, so that the intake pressure of the gas pushes the seal member against the valve port, thereby improving the sealing performance of the gas proportional valve. Improve the service life of the gas proportional valve.
  • gas proportional valve according to the above embodiment of the present invention may further have the following additional technical features:
  • At least a portion of the seal is located below the valve port, and at least a portion of the seal has a radial dimension that is greater than a radial dimension of a lower end of the valve port.
  • the outer peripheral surface of the sealing member has a wedge-shaped surface shape which gradually increases in size from top to bottom, and the lower edge of the valve port is abutted when the valve core assembly closes the valve opening The circumferential surface of the seal.
  • the lower end of the spool is provided with an outwardly projecting locating flange, the seal being overlaid on the locating flange.
  • the spool is a hollow rod having an upper end closed and a lower end open and in communication with the first valve chamber.
  • the seal is disposed at a lower end of the spool, and a guide ring is disposed in the second valve chamber, and the spool slidably passes through the guide ring up and down.
  • the drive reset member includes a spring, two ends of the spring are respectively connected to the valve body and the valve core, and the spring often drives the valve core to close the valve port a permanent magnet, the permanent magnet is disposed on the valve core, and an electromagnetic driving portion disposed on the valve body and corresponding to the permanent magnet.
  • the spring extends in an up and down direction, an upper end of the spring is connected to a lower end of the spool, a lower end of the spring is connected to a bottom surface of the first valve chamber, and the spring is often In a compressed state.
  • the lower end surface of the valve body is formed with a notch groove
  • the upper end of the spring is fitted in the notch groove
  • the bottom surface of the first valve cavity is provided with a bump
  • the spring The lower end is sleeved on the bump.
  • the upper end of the valve body is provided with an annular diaphragm, the outer peripheral edge of the diaphragm is sealingly connected with the valve body, and the inner circumference of the diaphragm is opposite to the valve core Sealed connection.
  • FIG. 1 is a schematic view of a gas proportional valve in a closed state according to an embodiment of the present invention
  • Fig. 2 is a schematic view of the gas proportional valve shown in Fig. 1 in an open state.
  • Valve body 1 first valve chamber 11, second valve chamber 12, valve port 13, air inlet 14, air outlet 15,
  • a gas proportional valve 100 according to an embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
  • a gas proportional valve 100 includes a valve body 1, a spool assembly 2, and a drive reset member.
  • the valve body 1 is formed with a first valve chamber 11, a second valve chamber 12 and a valve port 13.
  • the lower end of the valve port 13 communicates with the first valve chamber 11 and the upper end communicates with the second valve chamber 12, and the first valve chamber 11
  • An air inlet 14 is connected, and an air outlet 15 is connected to the second valve chamber 12.
  • the flow direction of the gas is: the gas enters the first valve chamber 11 from the inlet port 14, passes through the valve port 13 from the bottom to the second valve chamber 12, and finally flows out from the gas outlet 15.
  • the spool assembly 2 is movably disposed on the valve body 1 between the position of opening and closing the valve port 13 in the up and down direction, the spool assembly 2 includes a spool 21 and a seal 22, and the seal 22 is disposed on the spool 21.
  • the spool assembly 2 closes the valve port 13 by a seal 22 that closes the valve port 13 when the spool assembly 2 closes the valve port 13.
  • at least part of the sealing member 22 is located in the first valve chamber 11. Since the first valve chamber 11 communicates with the air inlet 14, the intake pressure in the first valve chamber 11 acts on the sealing member 22, and the direction is Upper, thereby, the seal 22 can be pushed against the valve port 13, thereby enhancing the sealing performance of the valve port 13.
  • the drive reset members are respectively connected to the valve body 1 and the spool assembly 2, and the drive reset member is used to drive the spool 21 to move to open or close the valve port 13, thereby opening and closing the gas proportional valve 100.
  • the gas entering the first valve chamber 11 will apply an upward pressure to the spool 21, which allows the seal 22 to further improve the seal.
  • the member 22 closes the force of the valve port 13, thereby improving the sealing performance of the gas proportional valve 100.
  • At least a portion of the seal 22 is located below the valve port 13, and at least a portion of the seal 22 may have a radial dimension that is greater than a radial dimension of the lower end of the valve port 13.
  • the outer peripheral surface of the sealing member 22 may have a wedge-shaped surface shape which gradually increases in size from top to bottom, and the valve port 13 when the valve core assembly 2 closes the valve port 13 The lower edge abuts against the circumferential surface of the seal 22.
  • a relatively smooth air flow passage can be formed between the seal 22 and the valve port 13, and when the spool assembly 2 is closed, the seal 22 and the valve port 13 can be raised. Sealing performance.
  • the lower end of the spool 21 may be provided with an outwardly projecting positioning flange 212, and the sealing member 22 is wrapped around the positioning flange 212.
  • the locating flange 212 can support the seal 22 from the inside to the outside, increasing the rigidity of the seal 22 and avoiding the loss of sealing performance of the seal 22 through the valve port 13 when the intake pressure is excessive.
  • the spool 21 is a hollow rod that is closed at the upper end and that is open at the lower end and communicates with the first valve chamber 11.
  • the production cost of the spool 21 can be reduced, but also the contact area of the valve core 21 with the gas in the first valve chamber 11 can be increased, and the gas inlet pressure can be increased to the spool 21.
  • the upward thrust thereby improving the sealing performance between the spool assembly 2 and the valve port 13.
  • the sealing member 22 is disposed at the lower end of the valve body 21, and the second valve chamber 12 is provided with a guiding ring 6 through which the valve core 21 slidably passes up and down. 6.
  • the radial displacement of the valve core 21 can be defined by the guide ring 6, and the spool assembly 2 can be moved only in the up and down direction during the operation, thereby effectively preventing the valve core 21 from vibrating the left and right deflection valve port 13 And noise, improve the voltage regulation performance of the gas proportional valve 100.
  • the drive reset member may include a spring 31, a permanent magnet 32, and an electromagnetic drive portion 33.
  • the two ends of the spring 31 are respectively connected with the valve body 1 and the valve core 21, and the spring 31 often drives the valve core 21 to close the valve port 13, that is, the elastic force of the spring 31 always pushes the spool assembly 2 toward the valve port 13 The direction is moved so that the spool assembly 2 is in contact with the valve port 13 to close the valve port 13.
  • the permanent magnet 32 is provided on the valve body 21, and the electromagnetic drive portion 33 is provided on the valve body 1 and corresponds to the permanent magnet 32.
  • the correspondence between the electromagnetic drive portion 33 and the permanent magnet 32 means that the magnetic field generated by the energization of the electromagnetic drive portion 33 covers the permanent magnet 32. Therefore, the force acting on the permanent magnet 32 by the magnetic field causes the valve core assembly 2 to move in the up and down direction under the driving of the permanent magnet 32, thereby driving the spool assembly 2 to open or close the valve port 13.
  • the spring 31 extends in the up and down direction, the upper end of the spring 31 is connected to the lower end of the valve body 21, the lower end of the spring 31 is connected to the bottom surface of the first valve chamber 11, and the spring 31 is often compressed. status. Thereby, the elastic force of the spring 31 after being compressed can push the valve body 21 to move upward and abut against the valve port 13, thereby enhancing the sealing performance of the valve port 13.
  • a notch groove 211 is formed on the lower end surface of the valve body 21, and the upper end of the spring 31 is matched in the short In the mouth groove 211, a convex block 41 is disposed on the bottom surface of the first valve chamber 11, and a lower end of the spring 31 is fitted over the bump 41.
  • the upper end of the valve body 21 is provided with an annular diaphragm 23, the outer peripheral edge of the diaphragm 23 is sealingly connected with the valve body 1, and the inner peripheral edge of the diaphragm 23 is sealingly connected with the valve core 21. .
  • the diaphragm 23 can seal the upper end of the second valve chamber 12 to ensure the sealing performance of the second valve chamber 12.
  • the gas proportional valve 100 of the embodiment of the present invention adopts reverse intake air
  • the second valve chamber 12 communicates with the air outlet port 15, and the gas pressure in the second valve chamber 12 is smaller than the first valve chamber 11 due to the action of the valve port 13.
  • the gas pressure inside can reduce the pressure received by the diaphragm 23, increase the service life of the diaphragm 23, and also prevent the gas from forming turbulence at the valve port 13 to avoid vibration and noise.
  • a gas proportional valve 100 in accordance with an embodiment of the present invention will now be described with reference to FIGS. 1 and 2.
  • a gas proportional valve 100 includes a valve body 1, a spool assembly 2, and a drive reset member.
  • a first valve chamber 11, a second valve chamber 12 and a valve port 13 are formed in the valve body 1.
  • the upper end of the valve port 13 communicates with the second valve chamber 12 and the lower end communicates with the first valve chamber 11
  • the first valve chamber 11 is in communication with the air inlet port 14
  • the second valve chamber 12 is in communication with the air outlet port 15
  • the bottom plate 4 is disposed at the bottom of the valve body 1 and seals the lower end of the first valve chamber 11, and the center of the bottom plate 4 is formed with a convex portion.
  • Block 41; a top cover 5 is provided at the top of the valve body 1.
  • the spool assembly 2 includes a spool 21 and a seal 22, wherein the spool 21 is a hollow rod whose upper end is closed and whose lower end is open and communicates with the first valve chamber 11.
  • a notch groove 211 is formed on the lower end surface of the valve body 21.
  • the lower end of the valve body 21 is provided with a positioning flange 212 protruding outwardly.
  • the sealing member 22 is wrapped on the positioning flange 212, and the outer peripheral surface of the sealing member 22 is A wedge-shaped surface having a gradually increasing radial dimension from top to bottom, at least a portion of the seal 22 is located below the valve port 13, and at least a portion of the seal 22 below the valve port 13 has a radial dimension greater than a lower end of the valve port 13 Radial size.
  • a guide ring 6 is disposed in the second valve chamber 12, and the valve core 21 can slide up and down through the guide ring 6.
  • the upper end of the valve body 21 is provided with an annular diaphragm 23, and the outer circumference of the diaphragm 23 is disposed between the top cover 5 and the valve body 1, and the diaphragm 23 is pressed by the top cover 5 to seal the second valve chamber 12.
  • the inner periphery of the diaphragm 23 is pressed between the boot 34 and the spool 21 to provide a sealing effect.
  • the driving resetting member includes a spring 31, a permanent magnet 32 and an electromagnetic driving portion 33.
  • the upper end of the spring 31 is fitted in the notch groove 211 of the lower end surface of the valve body 21, and the lower end of the spring 31 is fitted over the bump 41 of the bottom plate 4;
  • the magnet 32 is fixed on the top of the valve core 21 through the protective sleeve 34.
  • the protective sleeve 34 is provided with a circlip 35.
  • the circlip 35 presses the protective sleeve 34 against the valve core 21;
  • the electromagnetic driving portion 33 is a coil assembly, and the coil assembly is disposed at Above the top cover 5 and corresponding to the permanent magnet 32.
  • the gas proportional valve 100 when the gas proportional valve 100 is not in operation, the gas enters the first valve chamber 11 from the intake port 14, and at this time, the spool 21 and the seal 22 are subjected to the pressure in the first valve chamber 11, and the direction is toward In the same direction, the direction of the thrust applied by the spring 31 to the spool 21 is the same, and the seal member 22 is pushed against the valve port 13 to enhance the sealing performance of the valve port 13 and the intake of the gas. The greater the pressure, the better the sealing effect.
  • the sealing member 22 is wrapped around the valve body 21, and the positioning flange 212 serves as a support, thereby ensuring that the sealing member 22 does not lose airtightness due to the force being applied too much through the valve opening 13.
  • the coil assembly is energized to generate a magnetic field, and the permanent magnet 32 is pushed, so that the spool 21 and the seal 22 are moved downward, the valve port 13 is opened, and the gas is supplied from the first valve chamber 11
  • the second valve chamber 12 is accessed through the valve port 13.
  • the gas pressure in the second valve chamber 12 is weakened by the action of the valve port 13, thereby reducing the pressure on the diaphragm 23, and when the air outlet 15 is small, the gas is not at the valve port. Turbulence is formed at 13 to avoid vibration and noise.
  • valve core 21 passes through the guide ring 6, which can ensure that the valve core 21 only moves up and down during the operation of the gas proportional valve 100, so that the vibration and noise generated by the valve core 21 from the left and right deflections of the valve port 13 can be effectively avoided. Improve the voltage regulation performance of the gas proportional valve 100.
  • the reverse air intake is employed by changing the manner in which the gas enters the first valve chamber 11 and the second valve chamber 12, thereby improving the sealing performance of the gas proportional valve 100.
  • the pressure of the diaphragm 23 is reduced, the service life of the diaphragm 23 is greatly prolonged, the voltage regulation performance of the gas proportional valve 100 is improved, and vibration and noise are effectively avoided.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, electrical connection, or communication; can be directly connected, or indirectly connected through an intermediate medium, can be the internal connection of two components or the interaction of two components .
  • installation can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne une soupape proportionnelle à gaz comprenant un corps de soupape (1), un ensemble de noyau de soupape (2) et un élément de réinitialisation d'entraînement, le corps de soupape (1) étant formé avec une première cavité de soupape (11), une seconde cavité de soupape (12) et un orifice de soupape (13), l'orifice de soupape (13) communiquant avec la première cavité de soupape (11) à l'extrémité inférieure et avec la seconde cavité de soupape (12) à l'extrémité supérieure, la première cavité de soupape (11) étant reliée à une entrée de gaz (14) et la seconde cavité de soupape (12) étant reliée à la sortie de gaz (15); lorsque l'ensemble de noyau de soupape ferme l'orifice de soupape, un élément d'étanchéité (22) de l'ensemble de noyau de soupape vient en butée au-dessous de l'orifice de soupape; l'élément de réinitialisation d'entraînement est utilisé pour entraîner un noyau de soupape (21) de l'ensemble de noyau de soupape de manière à se déplacer de façon à ouvrir ou fermer l'orifice de soupape (13).
PCT/CN2016/080403 2016-03-16 2016-04-27 Soupape proportionnelle à gaz WO2017156831A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201620201556.1 2016-03-16
CN201610149227.1A CN105626874A (zh) 2016-03-16 2016-03-16 燃气比例阀
CN201610149227.1 2016-03-16
CN201620201556.1U CN205503997U (zh) 2016-03-16 2016-03-16 燃气比例阀

Publications (1)

Publication Number Publication Date
WO2017156831A1 true WO2017156831A1 (fr) 2017-09-21

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Application Number Title Priority Date Filing Date
PCT/CN2016/080403 WO2017156831A1 (fr) 2016-03-16 2016-04-27 Soupape proportionnelle à gaz

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WO (1) WO2017156831A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108716560A (zh) * 2018-08-01 2018-10-30 广东万家乐燃气具有限公司 一种燃气热水器稳压阀及燃气热水器
CN109139931A (zh) * 2018-10-25 2019-01-04 宁波机阀门制造有限公司 一种具有稳压结构的闸阀
CN109373011A (zh) * 2018-12-07 2019-02-22 深圳市时光电子有限公司 防水电磁阀及具有它的设备
CN109442094A (zh) * 2018-12-24 2019-03-08 恒天重工股份有限公司 一种纠偏用机控阀
IT201700111238A1 (it) * 2017-10-04 2019-04-04 Sit Spa Gruppo valvolare per il controllo della erogazione di un gas combustibile verso un apparecchio bruciatore
CN111173972A (zh) * 2020-03-06 2020-05-19 河北金牛旭阳化工有限公司 一种安全阀以及安全阀保护系统
CN111981182A (zh) * 2020-09-02 2020-11-24 嘉兴市大宇机电有限公司 用于燃气电磁阀的介质隔离装置及其隔离方法
CN112431805A (zh) * 2020-12-04 2021-03-02 涌镇液压机械（上海）有限公司 集成稳压功能的比例减压阀
CN114658861A (zh) * 2022-04-06 2022-06-24 昆山新莱洁净应用材料股份有限公司 一种隔膜阀
WO2022199252A1 (fr) * 2021-03-23 2022-09-29 浙江盾安人工环境股份有限公司 Électrovanne et ensemble électrovanne
CN115539687A (zh) * 2022-11-07 2022-12-30 东莞理工学院 一种气体安全阀及其工作方法

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EP1382907A1 (fr) * 2002-07-12 2004-01-21 G. Kromschröder Aktiengesellschaft Dispositif pour régler le débit de gaz dans un brûleur
EP2444730A1 (fr) * 2010-10-19 2012-04-25 Coprecitec, S.L. Méthode de montage d'un robinet de gaz électromagnétiques, et vanne de gaz électromagnétique
CN203718079U (zh) * 2014-01-15 2014-07-16 马松峰 一种一体式燃气比例阀
CN203857112U (zh) * 2014-03-28 2014-10-01 彭银 一种燃气比例阀的阀芯
CN204300405U (zh) * 2014-11-26 2015-04-29 佛山市顺德万和电气配件有限公司 燃气比例阀
CN204512443U (zh) * 2015-01-30 2015-07-29 黄依华 直顶式比例阀
CN104930244A (zh) * 2014-03-21 2015-09-23 航空技术空间股份有限公司 用于高压低温气体的航空电子阀

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Publication number Priority date Publication date Assignee Title
EP1382907A1 (fr) * 2002-07-12 2004-01-21 G. Kromschröder Aktiengesellschaft Dispositif pour régler le débit de gaz dans un brûleur
EP2444730A1 (fr) * 2010-10-19 2012-04-25 Coprecitec, S.L. Méthode de montage d'un robinet de gaz électromagnétiques, et vanne de gaz électromagnétique
CN203718079U (zh) * 2014-01-15 2014-07-16 马松峰 一种一体式燃气比例阀
CN104930244A (zh) * 2014-03-21 2015-09-23 航空技术空间股份有限公司 用于高压低温气体的航空电子阀
CN203857112U (zh) * 2014-03-28 2014-10-01 彭银 一种燃气比例阀的阀芯
CN204300405U (zh) * 2014-11-26 2015-04-29 佛山市顺德万和电气配件有限公司 燃气比例阀
CN204512443U (zh) * 2015-01-30 2015-07-29 黄依华 直顶式比例阀

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700111238A1 (it) * 2017-10-04 2019-04-04 Sit Spa Gruppo valvolare per il controllo della erogazione di un gas combustibile verso un apparecchio bruciatore
CN108716560A (zh) * 2018-08-01 2018-10-30 广东万家乐燃气具有限公司 一种燃气热水器稳压阀及燃气热水器
CN109139931B (zh) * 2018-10-25 2023-10-20 宁波一机阀门制造有限公司 一种具有稳压结构的闸阀
CN109139931A (zh) * 2018-10-25 2019-01-04 宁波机阀门制造有限公司 一种具有稳压结构的闸阀
CN109373011A (zh) * 2018-12-07 2019-02-22 深圳市时光电子有限公司 防水电磁阀及具有它的设备
CN109442094A (zh) * 2018-12-24 2019-03-08 恒天重工股份有限公司 一种纠偏用机控阀
CN109442094B (zh) * 2018-12-24 2024-01-05 恒天重工股份有限公司 一种纠偏用机控阀
CN111173972A (zh) * 2020-03-06 2020-05-19 河北金牛旭阳化工有限公司 一种安全阀以及安全阀保护系统
CN111981182A (zh) * 2020-09-02 2020-11-24 嘉兴市大宇机电有限公司 用于燃气电磁阀的介质隔离装置及其隔离方法
CN112431805A (zh) * 2020-12-04 2021-03-02 涌镇液压机械（上海）有限公司 集成稳压功能的比例减压阀
CN112431805B (zh) * 2020-12-04 2024-05-17 涌镇液压机械（上海）有限公司 集成稳压功能的比例减压阀
WO2022199252A1 (fr) * 2021-03-23 2022-09-29 浙江盾安人工环境股份有限公司 Électrovanne et ensemble électrovanne
CN114658861A (zh) * 2022-04-06 2022-06-24 昆山新莱洁净应用材料股份有限公司 一种隔膜阀
CN114658861B (zh) * 2022-04-06 2024-04-02 昆山新莱洁净应用材料股份有限公司 一种隔膜阀
CN115539687A (zh) * 2022-11-07 2022-12-30 东莞理工学院 一种气体安全阀及其工作方法

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