WO2013181933A1 - Soupape de sécurité différentielle électromagnétique - Google Patents

Soupape de sécurité différentielle électromagnétique Download PDF

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Publication number
WO2013181933A1
WO2013181933A1 PCT/CN2013/000677 CN2013000677W WO2013181933A1 WO 2013181933 A1 WO2013181933 A1 WO 2013181933A1 CN 2013000677 W CN2013000677 W CN 2013000677W WO 2013181933 A1 WO2013181933 A1 WO 2013181933A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
core
flap
opening
electromagnetic
Prior art date
Application number
PCT/CN2013/000677
Other languages
English (en)
Chinese (zh)
Inventor
顾根泉
孙艳玲
王永良
李铁
杨英福
Original Assignee
国家电网公司
河南平高电气股份有限公司
平高集团有限公司
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
Application filed by 国家电网公司, 河南平高电气股份有限公司, 平高集团有限公司 filed Critical 国家电网公司
Publication of WO2013181933A1 publication Critical patent/WO2013181933A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves

Definitions

  • the present invention relates to a safety valve, and more particularly to an electromagnetic differential safety valve for a hydraulic operating mechanism for a high-pressure, ultra-high-pressure, ultra-high-voltage circuit breaker and integrated with a drain valve function.
  • the safety valve is an important safety module for the hydraulic operating mechanism of the high-voltage circuit breaker.
  • the safety valve can release the pressure in time to achieve the voltage regulation.
  • the traditional safety valve is a mechanical direct-acting safety valve, including a valve body, a valve seat, a wide valve, a spring disposed on the back of the valve flap, a high-pressure port disposed at the front of the valve flap, and a low-pressure interface disposed at the back of the valve flap.
  • the liquid's own pressure overcomes the spring force to open the valve flap to open the valve port for bleed and pressure reduction.
  • the valve flap is closed by the spring.
  • the spring and the spring that maintain the valve port are required to have high rigidity and compression requirements, resulting in a relatively high opening resistance of the safety valve.
  • the valve is completed after the pressure relief is completed. The flap is not easily closed reliably, preventing the hydraulic system from maintaining pressure, resulting in pressure relief, frequent pressure, latch-up, and the like. If the above-mentioned problems occur in the normal operation of the hydraulic operating mechanism, the stability and reliability of the circuit breaker operation will be reduced, and even serious accidents may occur.
  • the pressure relief valve used in the hydraulic system functions to release pressure during commissioning and maintenance, and is generally mechanically manual.
  • the commonly used hydraulic operating mechanism generally includes two hydraulic components, a safety wide and a high pressure oil drain valve, but their functions are repeated, which increases the oil leakage on the one hand and increases the hydraulic operating mechanism on the other hand. cost.
  • An object of the present invention is to provide an electromagnetic differential safety valve for the above problems, which overcomes the problem that the safety valve requires high spring stiffness and compression, large opening resistance, and unreliable closing.
  • an electromagnetic differential safety valve comprising a valve flap, a sley, a high pressure port and a low pressure port, wherein the valve flap extends along a closing direction thereof and is provided with a valve a core sliding seal is disposed in the valve seat, the high pressure interface is disposed on one side of the wide flap opening direction, and the low pressure interface is disposed on a side of the valve flap closing direction;
  • the low-pressure interface is provided with a flow port, the wide core is provided with a diameter connecting the flow port and the valve flap;
  • the valve flap extends along the opening direction thereof and is provided with a valve core return spring and the sliding seal is inserted into the valve body a spool in which a closed chamber is formed between the end of the spool and the valve body, and the safety valve is provided with a communication passage to communicate the closed chamber with the low pressure interface;
  • One end of the valve seat is provided with an electromagnet opening device that pushes the wide core to open.
  • the structure of the invention for placing the high-pressure interface on one side of the valve flap opening direction is completely different from the existing safety valve, and the opening of the valve flap is realized by the electromagnetic opening device provided with the matching, and the valve core return spring does not have to bear further Balancing the high-pressure oil, the requirements for its own stiffness are greatly reduced, and the resistance to the opening is also reduced.
  • the solenoid valve continues to be energized, the valve port can be maintained in the open state, ensuring smooth pressure discharge and stable performance. After the pressure returns to normal, the electromagnet loses power, and the valve port is closed under the action of the hydraulic medium pressure and the spool return spring. The greater the pressure, the more reliable the closing, avoiding the valve frequency hopping, pressure relief and leakage.
  • the design of the connecting channel adopts a differential connection, so that the hydraulic effective area acting upward on the end of the valve post and the valve core is larger than the hydraulic effective area acting downward on the wide core, so the hydraulic oil itself can provide the valve closing direction.
  • the force can be fine-tuned by adjusting the spool diameter.
  • the flow direction of the high-pressure oil disposed at the bottom of the valve flap is the same as the closing direction of the valve flap, which is more favorable for closing the valve flap, thereby making the safety valve closing more reliable.
  • the electromagnetic differential safety valve is a poppet valve, which is sealed and sensitive, and can better avoid leakage.
  • the connecting passage is a hole obliquely crossing the inside of the valve body, one end of the hole communicates with the closed chamber, and the other end communicates with the low pressure port. This avoids additional leakage hazards and performance effects from the connecting lines and makes the safety valve structure more compact.
  • the electromagnet opening device includes an armature opposite to the valve core at one end, and the other end of the armature protrudes from the top of the electromagnet and is correspondingly provided with a pressing device for pushing the armature downward.
  • the pressing device can manually press down the armature and push the spool to achieve manual pressure relief, thereby integrating the function of the drain valve and reducing the number of parts and leakage of the hydraulic system.
  • FIG. 1 is a schematic structural view of an embodiment of an electromagnetic differential safety valve of the present invention.
  • the safety valve is an integrated electromagnetic differential safety valve, which mainly comprises a safety valve body portion, an electromagnetic driving portion and a drain valve driving portion.
  • the main body portion includes a valve flap 18, a valve seat 4, a high pressure interface, and a low pressure interface.
  • the valve disc 18 adopts a cone valve structure, and a valve core 6 is disposed along the closing direction of the valve disc 18.
  • the valve core 6 is slidingly sealed and disposed in the valve seat 4 and the valve sleeve 5, and the high pressure interface is disposed on the valve flap.
  • 18 is on one side of the opening direction, and the low pressure interface is disposed on a side of the valve flap 18 in the closing direction;
  • the valve seat 4 is provided with a flow port corresponding to the low pressure interface position, and the valve core 6 is provided with a diameter connecting the flow port and the valve flap 18; the valve flap 18 extends along the opening direction thereof and is mounted on the spring seat.
  • a spool return spring 10 on the seventh and sliding seal is inserted into the spool 19 in the valve body 8, and a chamber larger than the spool opening stroke is left between the end of the spool 19 and the valve body 8, the chamber
  • the closed chamber is closed by a bottom cover 11 disposed on the valve body, and the bottom cover 11 and the valve body 8 are connected by bolts and sealed by a sealing ring 9; the valve body 8 is provided with a long hole in an obliquely intersecting manner, and the long hole is connected at one end.
  • the closed chamber is connected to the low pressure port; the end of the valve core 6 passing through the valve seat 4 is provided with an electromagnet 1 for pushing the valve core 6 to open.
  • Electromagnetic drive portion The safety valve is provided with an electromagnet 1 including an armature 2, and the armature 2 is opposed to an end face of the valve body 6 extending out of the valve seat 4.
  • the electromagnet 1 and the valve body 8 are assembled by long studs, and a sealing ring 9 is provided on the joint surface to achieve sealing.
  • the outlet seat 17 of the electromagnet 1 leads the control circuit to the oil pressure switch of the pipeline system to control the electromagnet to be powered and de-energized.
  • the lower end of the armature 2 is also provided with an electromagnet return spring 3 compressed between the armature 2 and the valve seat 4.
  • the oil drain valve driving portion the armature 2 protrudes from the top of the electromagnet, the corresponding end is provided with a jack 14 for pushing the movement of the armature 2, a hand wheel 15 connected to the jack 14 through the pin 16, and
  • the electromagnet housing 13 is connected by a screw-connected top cover 12, wherein a part of the length of the ejector 14 has an externally threaded structure, which can be rotated in the threaded hole with the top of the electromagnet 1 and moved up and down with the rotation, and the top cover 12 is used. To limit the displacement of the ejector 14.
  • the oil pressure switch contact opens, the electromagnet 1 loses power, and the armature 2 is reset by the electromagnet return spring 3, and the core 6 is under the pressure formed by the spool return spring 10 and the oil pressure difference. Closed in the direction of high pressure oil flow.
  • the poppet valve structure used in this embodiment may also be a conventional ball valve structure, a planar sealing structure or a blade sealing structure; and the cross-connect channel used in this embodiment.
  • the armature pushing device can also be used in the usual form of articulating the lever on the top of the electromagnet 1, and it is also possible to push the armature 2 downward to open the flap.

Landscapes

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

Abstract

L'invention concerne une soupape de sécurité différentielle électromagnétique. Un clapet de soupape (18) est pourvu d'un noyau de soupape (6) s'étendant le long de la direction de fermeture, le noyau de soupape (6) traverse un siège de soupape (4) de manière coulissante et étanche, un raccord haute pression est placé sur un côté du clapet de soupape (18) dans la direction d'ouverture, et un raccord basse pression est placé sur un côté du clapet de soupape (18) dans la direction de fermeture ; un orifice de circulation est placé sur le siège de soupape (4) correspondant au raccord basse pression, et le noyau de soupape (6) est pourvu d'un chemin traversant qui fait communiquer l'orifice de circulation avec le clapet de soupape (18) ; le clapet de soupape (18) est pourvu d'une tige de soupape (19) s'étendant le long de la direction d'ouverture, un ressort de rappel de noyau de soupape (10) est monté sur la tige de soupape (19), et la tige de soupape (19) est insérée dans le corps de soupape (8) de manière coulissante, étanche et correspondante ; une chambre fermée qui est plus grande que la course d'ouverture du noyau de soupape (6) est placée entre l'extrémité arrière de la tige de soupape (19) et le corps de soupape (8), et la soupape de sécurité est pourvue d'un canal de communication qui fait communiquer la chambre fermée avec le raccord basse pression ; et un dispositif d'ouverture à électroaimant utilisé pour ouvrir le noyau de soupape (6) par pression est placé à une extrémité du noyau de soupape (6), et l'extrémité du noyau de soupape (6) sort du siège de soupape (4). La soupape de sécurité différentielle électromagnétique qui est intégrée à la fonction d'une soupape de vidange d'huile présente les caractéristiques d'une faible exigence imposée au ressort, d'une faible résistance à l'ouverture, et d'une fiabilité à l'ouverture et à la fermeture.
PCT/CN2013/000677 2012-06-08 2013-06-07 Soupape de sécurité différentielle électromagnétique WO2013181933A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210188146.4A CN102705551B (zh) 2012-06-08 2012-06-08 电磁差动安全阀
CN201210188146.4 2012-06-08

Publications (1)

Publication Number Publication Date
WO2013181933A1 true WO2013181933A1 (fr) 2013-12-12

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Application Number Title Priority Date Filing Date
PCT/CN2013/000677 WO2013181933A1 (fr) 2012-06-08 2013-06-07 Soupape de sécurité différentielle électromagnétique

Country Status (2)

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CN (1) CN102705551B (fr)
WO (1) WO2013181933A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102705551B (zh) * 2012-06-08 2014-04-09 河南平高电气股份有限公司 电磁差动安全阀
CN104633356A (zh) * 2014-12-10 2015-05-20 珠海格力电器股份有限公司 注氟嘴安全转接装置
CN108443269B (zh) * 2018-03-23 2023-07-28 浙江迦南科技股份有限公司 一种单向限速装置
CN109373023B (zh) * 2018-11-23 2024-02-06 苏州赛谱仪器有限公司 一种动态电磁调节式背压阀装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2207484Y (zh) * 1994-05-18 1995-09-13 中国科学院自动化研究所 自保节能电磁阀
CN2326799Y (zh) * 1998-01-26 1999-06-30 戴家秀 一种燃气安全阀
CN2351631Y (zh) * 1998-08-19 1999-12-01 刘敬善 一种大流量球型电磁阀
US20020003221A1 (en) * 2000-02-16 2002-01-10 Katsumi Koyama Solenoid operated pilot valve
CN101290070A (zh) * 2008-04-18 2008-10-22 沈阳工大电子工程有限公司 一种具有自卫能力的电磁液压阀
CN102705551A (zh) * 2012-06-08 2012-10-03 河南平高电气股份有限公司 电磁差动安全阀

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6184715A (ja) * 1984-10-02 1986-04-30 Tlv Co Ltd 自動設定減圧弁
PL147052B1 (en) * 1985-10-24 1989-04-29 Polmag Pressure reducing valve with hydropneumatic accumulator
CN1046590A (zh) * 1989-04-22 1990-10-31 浙江大学 先导式气体压力控制阀
JPWO2009145176A1 (ja) * 2008-05-29 2011-10-13 アイシン・エィ・ダブリュ株式会社 電磁弁装置
CN201844077U (zh) * 2010-10-18 2011-05-25 张珉 一种燃气安全保护阀

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2207484Y (zh) * 1994-05-18 1995-09-13 中国科学院自动化研究所 自保节能电磁阀
CN2326799Y (zh) * 1998-01-26 1999-06-30 戴家秀 一种燃气安全阀
CN2351631Y (zh) * 1998-08-19 1999-12-01 刘敬善 一种大流量球型电磁阀
US20020003221A1 (en) * 2000-02-16 2002-01-10 Katsumi Koyama Solenoid operated pilot valve
CN101290070A (zh) * 2008-04-18 2008-10-22 沈阳工大电子工程有限公司 一种具有自卫能力的电磁液压阀
CN102705551A (zh) * 2012-06-08 2012-10-03 河南平高电气股份有限公司 电磁差动安全阀

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CN102705551B (zh) 2014-04-09
CN102705551A (zh) 2012-10-03

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