CN102620017A - High-pressure electromagnetic pneumatic-control decompression valve - Google Patents

High-pressure electromagnetic pneumatic-control decompression valve Download PDF

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Publication number
CN102620017A
CN102620017A CN2012100959349A CN201210095934A CN102620017A CN 102620017 A CN102620017 A CN 102620017A CN 2012100959349 A CN2012100959349 A CN 2012100959349A CN 201210095934 A CN201210095934 A CN 201210095934A CN 102620017 A CN102620017 A CN 102620017A
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CN
China
Prior art keywords
valve
pressure
pilot
pilot valve
guide
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Legal status (The legal status 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 status listed.)
Pending
Application number
CN2012100959349A
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Chinese (zh)
Inventor
徐文娴
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TIANZHENG VALVE CO Ltd
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TIANZHENG VALVE CO Ltd
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Filing date
Publication date
Application filed by TIANZHENG VALVE CO Ltd filed Critical TIANZHENG VALVE CO Ltd
Priority to CN2012100959349A priority Critical patent/CN102620017A/en
Publication of CN102620017A publication Critical patent/CN102620017A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a high-pressure electromagnetic pneumatic-control decompression valve which comprises a main valve and a pilot valve, wherein the main valve comprises a valve body, a valve seat, a valve clack and a valve deck; the pilot valve adopts a pneumatic-control valve; the pneumatic-control valve comprises a pneumatic device, a pilot valve body and a pilot valve clack; the pilot valve body is connected with an inlet path, an outlet path and a discharging hole path; the inlet path and the outlet path are respectively communicated with the pressure tapping and spring cavity of the main valve body; the outlet path, the inlet path and the discharging hole path are formed into a tee-joint structure via the pilot valve clack; the air source control circuit of the pneumatic device is connected with the pressure control switch of a pressure sensor in series; and the pressure sensor is installed on a medium pipeline communicated with the pressure tapping of the valve body. The pressure sensor at the pressure tapping is used for controlling the on-off state of the pilot valve, so that the high-pressure electromagnetic pneumatic-control decompression valve has the advantages of accurate and stable set pressure and small difference value between discharging pressure and the set pressure, and is suitable for the safe decompression device of flammable, toxic and harmful medium working conditions, such as natural gas.

Description

High-tension electricity magnetism control Decompression valves
Technical field
The present invention relates to valve field, particularly about a kind of pressure relief safety valve.The present invention is applicable to inflammable, poisonous, harmful cryogenic media operating modes such as rock gas.
Background technique
The pressure relief safety valve that is used for pipeline, container at present generally adopts the Pilot operated safety valve structure, utilizes pilot valve control main valve.Pilot valve is a Direct spring loaded safety valve, has independently pressure release function, and when system pressure reached Set pressure, pilot valve was opened, and the medium in the main valve piston chamber of releasing, main spool spring promote flap and open.Like publication number is the built-in Pilot operated safety valve of CN102313052A, comprises main valve and pilot valve, and main valve comprises valve body, valve gap, main valve seat, main valve clack, main valve guide sleeve, main spool spring, main valve stop collar, and pilot valve is installed in the endoporus of main valve stop collar.When pressure medium surpassed setup pressure value, medium promoted pilot valve flap compression pilot valve spring and opens pilot valve, and the pressure in the main valve clack back side spring chamber of releasing makes main valve open relieving pressure, protective system safety.Its major defect is that spring is under different temperature condition; Have the different elasticity coefficient, and through after long-term the use, the fatigue of spring and corrosion change its performance parameter; Set pressure has bigger fluctuation; Low, the poor stability of the degree of accuracy of its Set pressure, discharge pressure and Set pressure differ bigger, are not suitable for high container of Set pressure required precision or pipe-line system and use.
Summary of the invention
The objective of the invention is the shortcoming to the existing technology existence, provide a kind of Set pressure accurate, stable, discharge pressure and Set pressure differ little high-tension electricity magnetism control Decompression valves.
Technological scheme of the present invention comprises main valve and pilot valve; Main valve comprises valve body, valve seat, flap, valve gap, and valve body has pressure tappings and pressure relief opening, and the valve seat fixing seal is installed between the pressure tappings and pressure relief opening of valve body; Flap is installed in the guide sleeve in the valve body cavity; Its external cylindrical surface cooperates with the guide sleeve motive sealing, and the lower end surface is shaped on the sealing surface that cooperatively interacts with valve seat, top shock mount between upper-end surface and the valve gap; Form spring chamber between flap, guide sleeve, the valve gap three, the face area of flap in spring chamber is greater than the inboard face area of its lower end surface sealing surface.Mainly be that pilot valve adopts Pneumatic valve; This Pneumatic valve comprises Pneumatic actuator, pilot valve body, pilot valve lobe; The pilot valve body connects inlet passage, outlet passage and floss hole passage; Its inlet passage and outlet passage are communicated with the pressure tappings and the spring chamber of valve body of main valve respectively, and outlet passage constitutes three-port structure through pilot valve lobe and inlet passage, floss hole passage; Be connected in series on the source of the gas control circuit of the Pneumatic actuator pressure control switch of pressure transducer, pressure transducer is installed on the medium pipeline that is communicated with the valve body pressure tappings.
Preferably, pilot valve adopts solenoid valve, and this solenoid valve adopts the two-position three way structure of one-in-and-two-out, and spring chamber is through being connected with the inlet side of solenoid valve connecting tube, and two of solenoid valve go out end and are connected respectively to pressure tappings and floss hole pipeline; Be connected in series in the power circuit of the solenoid valve pressure control switch of pressure transducer, pressure transducer is installed on the medium pipeline that is communicated with the valve body pressure tappings.
Preferably; Be shaped on guide valve seat and following guide valve seat in the pilot valve body; Last guide valve seat is positioned at the inlet of pilot valve body valve pocket floss hole passage; Following guide valve seat is positioned at the outlet of the inlet passage of pilot valve body valve pocket, and the pilot valve lobe adopts round column structure, and its upper and lower end face is shaped on the sealing surface that cooperatively interacts with last guide valve seat and following guide valve seat respectively.
Preferably, be shaped on the annulus boss on the cylndrical surface in pilot valve lobe neutral position, between the pilot valve body in this annulus boss and the following guide valve seat outside, be provided with holddown spring.
Advantage of the present invention is: pilot valve adopts Pneumatic valve; Control the on off state of pilot valve by the pressure transducer of pressure tappings; When the pressure tappings pressure medium surpassed Set pressure, the switching signal of pressure transducer made Pneumatic actuator work, makes the outlet passage and the floss hole channel connection of pilot valve; Medium in the spring chamber is released, and the flap of main valve is pushed open the pressure tappings system pressure of releasing by pressure medium; Release to when being lower than Set pressure when the pressure tappings pressure medium, the switching signal of pressure transducer resets Pneumatic actuator, and the outlet passage of pilot valve is communicated with inlet passage, and the pressure tappings medium is introduced spring chamber, and pressure medium promotes flap and closes main valve.Characteristics such as it is accurate, stable to have Set pressure, and the difference between actual discharge pressure and the theoretical Set pressure is little.
Description of drawings
Fig. 1 is a structure sectional view of the present invention.
Embodiment
High-tension electricity magnetism control Decompression valves as shown in Figure 1 comprises main valve and pilot valve, and main valve comprises valve body 1, valve seat 3, flap 4, valve gap 10; Valve body 1 has pressure tappings 2 and pressure relief opening 6, and pressure tappings 2 flanges are connected on pressurized container or the pipeline, and valve seat 3 fixing seals are installed between the pressure tappings 2 and pressure relief opening 6 of valve body 1; Flap 4 is installed in the guide sleeve 5 in valve body 1 cavity; The circular convex shoulder sealing of guide sleeve 5 upper ends is fitted between valve body 1 and the valve gap 10, and flap 4 external cylindrical surfaces cooperate with guide sleeve 5 motive sealings, are provided with rubber seal 20 between the two; Flap 4 lower end surfaces are shaped on the sealing surface that cooperatively interacts with valve seat 3; Top shock mount 7 between upper-end surface and the valve gap 10, the pressure medium that prevents pressure tappings 2 during near Set pressure flap 4 vibrate, improve the stability that flap 4 and valve seat 3 are sealed and matched.Center, flap 4 upper-end surface is provided with caging bolt 8, the height that restriction flap 4 rises.Form spring chamber 9 between flap 4, guide sleeve 5, valve gap 10 threes; The face area of flap 4 in spring chamber 9 is greater than the inboard face area of its lower end surface sealing surface; When pressure tappings 2 was communicated with spring chamber 9, medium promoted flap 4 and cooperates with valve seat 3 reliable sealings.Pilot valve adopts Pneumatic valve; This Pneumatic valve comprises Pneumatic actuator 16, pilot valve body 14, pilot valve lobe; Pilot valve body 14 connects inlet passage 19, outlet passage 11 and floss hole passage 18; Its inlet passage 19 is communicated with spring chamber 9 with the pressure tappings 2 of valve body of main valve 1 respectively with outlet passage 11, and outlet passage 11 constitutes three-port structure through pilot valve lobe and inlet passage 19, floss hole passage 18; The pressure control switch of pressure transducer is connected in series on the source of the gas control circuit of Pneumatic actuator 14; Pressure transducer is installed on the medium pipeline that is communicated with valve body 1 pressure tappings 2; When the pressure medium of pressure tappings 2 surpasses Set pressure; The pressure signal of pressure transducer makes Pneumatic actuator 16 work, promotes the pilot valve lobe outlet passage 11 is communicated with floss hole passage 18, and medium is from 18 dischargings of floss hole passage in the spring chamber 9; Medium promotes flap 4 and opens main valve in the pressure tappings 2, pressure medium in the pressure tappings 2 of releasing; When the pressure medium of pressure tappings 2 is lower than Set pressure; The pressure signal of pressure transducer resets Pneumatic actuator 16; The pilot valve lobe is communicated with outlet passage 11 with inlet passage 19, pressure tappings 2 media get into spring chamber 9 promotion flaps 4 and are sealed and matched with valve seat 3, and its actual discharge pressure and Set pressure are basic identical; And the stability of Set pressure and degree of accuracy and spring are irrelevant, and the Set pressure precision is high, good stability.
Pilot valve adopts solenoid valve, the two-position three way structure that this solenoid valve adopts " advances two " to go out, and spring chamber 9 was connected with " advancing " end of solenoid valve through connecting tube, and two " going out " end of solenoid valve is connected respectively to pressure tappings 2 and floss hole pipeline 18; Be connected in series in the power circuit of the solenoid valve pressure control switch of pressure transducer, pressure transducer is installed on the medium pipeline that is communicated with valve body 1 pressure tappings 2.When pressure tappings 2 pressure mediums are lower than Set pressure; The pressure control switch control electromagnetic valve outage of pressure transducer; The end that goes out that the solenoid valve inlet side will be connected with the pipeline of pressure tappings 2 is communicated with, and pressure tappings 2 media get into spring chamber 9 promotion flaps 4 and are sealed and matched with valve seat 3; When pressure tappings 2 pressure mediums surpassed Set pressure, the pressure control switch control electromagnetic valve of pressure transducer got electric, and the end that goes out that the solenoid valve inlet side will be connected with floss hole pipeline 18 is communicated with, and made spring chamber 9 interior media through 18 dischargings of floss hole pipeline.
Be shaped on guide valve seat and following guide valve seat in the pilot valve body 14; Last guide valve seat is positioned at the inlet of the floss hole passage 18 of pilot valve body 14 valve pockets; Following guide valve seat is positioned at the outlet of the inlet passage 19 of pilot valve body 14 valve pockets; Pilot valve lobe 13 adopts round column structure, and its upper and lower end face is shaped on the sealing surface that cooperatively interacts with last guide valve seat and following guide valve seat respectively, and is as shown in Figure 1.When the pressure medium of pressure tappings 2 surpasses Set pressure; The pressure signal of pressure transducer makes Pneumatic actuator 16 work; The push rod 15 of Pneumatic actuator 16 promotes pilot valve lobe 13 outlet passage 11 is communicated with floss hole passage 18; Medium is from 18 dischargings of floss hole passage in the spring chamber 9, and medium promotes flap 4 and opens main valve in the pressure tappings 2, pressure medium in the pressure tappings 2 of releasing; When the pressure medium of pressure tappings 2 was lower than Set pressure, the pressure signal of pressure transducer resetted Pneumatic actuator 16, and pilot valve lobe 13 is communicated with outlet passage 11 with inlet passage 19, and pressure tappings 2 media get into spring chamber 9 promotion flaps 4 and are sealed and matched with valve seat 3.
Be shaped on annulus boss 17 on the cylndrical surface in pilot valve lobe 13 neutral positions; Between pilot valve body 14 inner chambers in this annulus boss 17 and the following guide valve seat outside, be provided with holddown spring 12; Improve the sealability between the guide valve seat on pilot valve lobe 13 upper-end surfaces and the pilot valve body 14, prevent to take place when pilot valve lobe 13 from moving up and down radial deflection.
Floss hole passage 18 is communicated with the pressure relief opening 6 of valve body of main valve 1, prevents the discharge medium befouling environment.

Claims (4)

1. high-tension electricity magnetism control Decompression valves; High-tension electricity magnetism control Decompression valves comprises main valve and pilot valve, and main valve comprises valve body (1), valve seat (3), flap (4), valve gap (10); Valve body (1) has pressure tappings (2) and pressure relief opening (6); Valve seat (3) fixing seal is installed between the pressure tappings (2) and pressure relief opening (6) of valve body (1), and flap (4) is installed in the guide sleeve (5) in valve body (1) cavity, and flap (4) external cylindrical surface cooperates with guide sleeve (5) motive sealing; Flap (4) lower end surface is shaped on the sealing surface that cooperatively interacts with valve seat (3); Top shock mount (7) between upper-end surface and the valve gap (10) forms spring chamber (9) between flap (4), guide sleeve (5), valve gap (10) three, and the face area of flap (4) in spring chamber (9) is greater than the inboard face area of its lower end surface sealing surface; It is characterized in that pilot valve adopts Pneumatic valve; This Pneumatic valve comprises Pneumatic actuator (16), pilot valve body (14), pilot valve lobe; Pilot valve body (14) connects inlet passage (19), outlet passage (11) and floss hole passage (18); Its inlet passage (19) and outlet passage (11) are communicated with the pressure tappings (2) and the spring chamber (9) of valve body of main valve (1) respectively, and outlet passage (11) constitutes three-port structure through pilot valve lobe and inlet passage (19), floss hole passage (18); Be connected in series on the source of the gas control circuit of Pneumatic actuator (14) pressure control switch of pressure transducer, pressure transducer is installed on the medium pipeline that is communicated with valve body (1) pressure tappings (2).
2. high-tension electricity magnetism control Decompression valves according to claim 1; It is characterized in that pilot valve adopts solenoid valve; This solenoid valve adopts the two-position three way structure of " one-in-and-two-out "; Spring chamber (9) was connected with " advancing " end of solenoid valve through connecting tube, and two " going out " end of solenoid valve is connected respectively to pressure tappings (2) and floss hole pipeline (18); Be connected in series in the power circuit of the solenoid valve pressure control switch of pressure transducer, pressure transducer is installed on the medium pipeline that is communicated with valve body (1) pressure tappings (2).
3. high-tension electricity magnetism control Decompression valves according to claim 1; It is characterized in that being shaped in the pilot valve body (14) guide valve seat and following guide valve seat; Last guide valve seat is positioned at the inlet of the floss hole passage (18) of pilot valve body (14) valve pocket; Following guide valve seat is positioned at the outlet of the inlet passage (19) of pilot valve body (14) valve pocket, and pilot valve lobe (13) adopts round column structure, and its upper and lower end face is shaped on the sealing surface that cooperatively interacts with last guide valve seat and following guide valve seat respectively.
4. high-tension electricity magnetism control Decompression valves according to claim 3; It is characterized in that being shaped on annulus boss (17) on the cylndrical surface in pilot valve lobe (13) neutral position, between pilot valve body (14) inner chamber in this annulus boss (17) and the following guide valve seat outside, be provided with holddown spring (12).
CN2012100959349A 2012-03-29 2012-03-29 High-pressure electromagnetic pneumatic-control decompression valve Pending CN102620017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012100959349A CN102620017A (en) 2012-03-29 2012-03-29 High-pressure electromagnetic pneumatic-control decompression valve

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Application Number Priority Date Filing Date Title
CN2012100959349A CN102620017A (en) 2012-03-29 2012-03-29 High-pressure electromagnetic pneumatic-control decompression valve

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103116004A (en) * 2013-01-31 2013-05-22 云南无线电有限公司 Device for conveying cleaning gas or detecting gas to detection alarm in real time
CN104006191A (en) * 2014-05-15 2014-08-27 杭州杭氧工装泵阀有限公司 Safety valve structure with pilot arranged externally
CN104565463A (en) * 2015-01-05 2015-04-29 宁波耀峰液压电器有限公司 Pressure regulating valve
CN104647400A (en) * 2013-11-20 2015-05-27 苏州科沃斯商用机器人有限公司 Automatic air release device
CN108223891A (en) * 2014-12-08 2018-06-29 乌鲁木齐九品芝麻信息科技有限公司 Power station main steam system top steam discharge electromagnetic relief valve

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930518A (en) * 1974-04-04 1976-01-06 Hopkinsons, Ltd. Valves
US4316598A (en) * 1980-07-25 1982-02-23 Vapor Corporation Balanced relief valve with novel seal
US4355657A (en) * 1978-09-18 1982-10-26 Vapor Corporation Pilot operated relief valve
CN2081024U (en) * 1990-08-30 1991-07-17 许渭清 Three-time opening valve electromagnetic valve with manual device
CN101675254A (en) * 2007-04-10 2010-03-17 伊利诺斯工具制品有限公司 pneumatically self-regulating valve
CN202109045U (en) * 2011-06-23 2012-01-11 浙江海一阀门有限公司 Pilot operated safety valve
CN202646808U (en) * 2012-03-29 2013-01-02 天正阀门有限公司 High-pressure electromagnetic air control decompression valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930518A (en) * 1974-04-04 1976-01-06 Hopkinsons, Ltd. Valves
US4355657A (en) * 1978-09-18 1982-10-26 Vapor Corporation Pilot operated relief valve
US4316598A (en) * 1980-07-25 1982-02-23 Vapor Corporation Balanced relief valve with novel seal
CN2081024U (en) * 1990-08-30 1991-07-17 许渭清 Three-time opening valve electromagnetic valve with manual device
CN101675254A (en) * 2007-04-10 2010-03-17 伊利诺斯工具制品有限公司 pneumatically self-regulating valve
CN202109045U (en) * 2011-06-23 2012-01-11 浙江海一阀门有限公司 Pilot operated safety valve
CN202646808U (en) * 2012-03-29 2013-01-02 天正阀门有限公司 High-pressure electromagnetic air control decompression valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103116004A (en) * 2013-01-31 2013-05-22 云南无线电有限公司 Device for conveying cleaning gas or detecting gas to detection alarm in real time
CN103116004B (en) * 2013-01-31 2015-07-15 云南无线电有限公司 Device for conveying cleaning gas or detecting gas to detection alarm in real time
CN104647400A (en) * 2013-11-20 2015-05-27 苏州科沃斯商用机器人有限公司 Automatic air release device
CN104006191A (en) * 2014-05-15 2014-08-27 杭州杭氧工装泵阀有限公司 Safety valve structure with pilot arranged externally
CN108223891A (en) * 2014-12-08 2018-06-29 乌鲁木齐九品芝麻信息科技有限公司 Power station main steam system top steam discharge electromagnetic relief valve
CN108223891B (en) * 2014-12-08 2019-07-12 宝嘉智能科技(南通)有限公司 Power station main steam system top steam discharge electromagnetic relief valve
CN104565463A (en) * 2015-01-05 2015-04-29 宁波耀峰液压电器有限公司 Pressure regulating valve

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Application publication date: 20120801