CN202646808U - High-pressure electromagnetic air control decompression valve - Google Patents
High-pressure electromagnetic air control decompression valve Download PDFInfo
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- CN202646808U CN202646808U CN 201220137630 CN201220137630U CN202646808U CN 202646808 U CN202646808 U CN 202646808U CN 201220137630 CN201220137630 CN 201220137630 CN 201220137630 U CN201220137630 U CN 201220137630U CN 202646808 U CN202646808 U CN 202646808U
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- pilot valve
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Abstract
The utility model relates to a high-pressure electromagnetic air control decompression valve. The high-pressure electromagnetic air control decompression valve comprises a main valve and a guide valve, wherein the main valve comprises a valve body, a valve base, a valve clack and a valve cover; mainly the guide valve adopts an air control valve which comprises a pneumatic device, a guide valve body and a guide valve clack, wherein the guide valve body is connected with an inlet channel, an outlet channel and a discharge outlet channel, the inlet channel and the outlet channel are respectively communicated with a pressure tap of the main valve body and a spring cavity; a tee-joint structure is formed by the outlet channel, the inlet channel and the discharge outlet channel by the guide valve clack; a gas source control circuit of the pneumatic device is serially connected with a pressure control switch of a pressure sensor, the pressure sensor is arranged on a medium pipe communicated with the pressure tap. The open state or the close state of the guide valve is controlled by the pressure sensor of the pressure tap, so the valve has the advantages of precise and stable set pressure, small difference between relieving pressure and the set pressure, and the like. The high pressure electromagnetic air control decompression valve is suitable for safety decompression devices in inflammable, poisonous and harmful working conditions such as natural gas and the like.
Description
Technical field
The utility model relates to valve field, particularly about a kind of pressure relief safety valve.The utility model is applicable to inflammable, poisonous, the harmful cryogenic media operating modes such as rock gas.
Background technique
Be used at present the pressure relief safety valve of pipeline, container, generally adopt the Pilot operated safety valve structure, utilize pilot valve control main valve.Pilot valve is Direct spring loaded safety valve, has independently decompression 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.Be the built-in Pilot operated safety valve of CN102313052A such as publication number, comprise main valve and pilot valve, 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, has different elasticity coefficient, and through after long-term the use, the fatigue of spring and corrosion change its performance parameter, Set pressure has larger fluctuation, low, the poor stability of the degree of accuracy of its Set pressure, discharge pressure and Set pressure differ larger, are not suitable for the high container of Set pressure required precision or pipe-line system and use.
Summary of the invention
The purpose of this utility model is the shortcoming that exists for prior art, provides a kind of Set pressure accurate, stable, and discharge pressure and Set pressure differ little high-voltage electromagnetic gas control Decompression valves.
The technical solution of the utility model comprises main valve and pilot valve, main valve comprises valve body, valve seat, flap, valve gap, valve body has pressure tappings and pressure relief opening, the valve seat fixing seal is installed between the pressure tappings and pressure relief opening of valve body, flap is installed in the interior guide sleeve of valve body cavity, its external cylindrical surface cooperates with the guide sleeve motive sealing, the lower end surface is shaped with the sealing surface that cooperatively interacts with valve seat, top shock mount between upper-end surface and the valve gap, flap, guide sleeve, form spring chamber between the valve gap three, the face area of flap in spring chamber is greater than the face area of its sealing surface inboard, lower end 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 pressure tappings and the spring chamber of valve body of main valve respectively, and outlet passage consists of three-port structure by pilot valve lobe and inlet passage, floss hole passage; Be connected in series the pressure control switch of pressure transducer on the source of the gas control circuit of Pneumatic actuator, 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 was connected with the inlet side of solenoid valve by 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 the pressure control switch of pressure transducer in the power circuit of solenoid valve, pressure transducer is installed on the medium pipeline that is communicated with the valve body pressure tappings.
Preferably, be shaped with guide valve seat and lower guide valve seat in the pilot valve body, upper guide valve seat is positioned at the entrance of pilot valve body valve pocket floss hole passage, lower guide valve seat is positioned at the outlet of the inlet passage of pilot valve body valve pocket, the pilot valve lobe adopts round column structure, and its upper and lower end face is shaped with respectively the sealing surface that cooperatively interacts with upper guide valve seat and lower guide valve seat.
Preferably, be shaped with the annulus boss on the cylndrical surface in pilot valve lobe neutral position, between the pilot valve body in this annulus boss and the lower guide valve seat outside, be provided with holddown spring.
The utility model has the advantages that: pilot valve adopts Pneumatic valve, controlled the on off state of pilot valve by the pressure transducer of pressure tappings, when the pressure tappings pressure medium surpasses Set pressure, the switching signal of pressure transducer makes Pneumatic actuator work, make 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.The 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 structure sectional view of the present utility model.
Embodiment
High-voltage electromagnetic gas control Decompression valves as shown in Figure 1, comprise main valve and pilot valve, 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, pressure tappings 2 flanges are connected on pressurized container or the pipeline, 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 interior guide sleeve 5 of valve body 1 cavity, the circular convex shoulder sealing pressing of guide sleeve 5 upper ends is contained between valve body 1 and the valve gap 10, flap 4 external cylindrical surfaces cooperate with guide sleeve 5 motive sealings, be provided with rubber seal 20 between the two, flap 4 lower end surfaces are shaped with 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 be flap 4 vibration-generatings during near Set pressure, 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 face area of its sealing surface inboard, lower end 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 and outlet passage 11 are communicated with pressure tappings 2 and the spring chamber 9 of valve body of main valve 1 respectively, and outlet passage 11 consists of three-port structure by pilot valve lobe and inlet passage 19, floss hole passage 18; Be connected in series the pressure control switch of pressure transducer 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, promoting the pilot valve lobe is communicated with outlet passage 11 with floss hole passage 18, spring chamber 9 interior media are from 18 dischargings of floss hole passage, pressure tappings 2 interior media promote flap 4 and open main valve, the pressure tappings 2 interior pressure mediums 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 enter spring chamber 9 promotion flaps 4 and are sealed and matched with valve seat 3, 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 by 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 the pressure control switch of pressure transducer in the power circuit of solenoid valve, 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 solenoid 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 enter 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 of pressure transducer control solenoid valve 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 by 18 dischargings of floss hole pipeline.
Be shaped with guide valve seat and lower guide valve seat in the pilot valve body 14, upper guide valve seat is positioned at the entrance of the floss hole passage 18 of pilot valve body 14 valve pockets, lower 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, its upper and lower end face is shaped with respectively the sealing surface that cooperatively interacts with upper guide valve seat and lower guide valve seat, 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, spring chamber 9 interior media are from 18 dischargings of floss hole passage, pressure tappings 2 interior media promote flap 4 and open main valve, the pressure tappings 2 interior pressure mediums 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 enter spring chamber 9 promotion flaps 4 and are sealed and matched with valve seat 3.
Be shaped with 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 lower 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 from occuring 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-voltage electromagnetic gas control Decompression valves, comprise main valve and pilot valve, 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), flap (4) is installed in the interior guide sleeve (5) of valve body (1) cavity, flap (4) external cylindrical surface cooperates with guide sleeve (5) motive sealing, flap (4) lower end surface is shaped with the sealing surface that cooperatively interacts with valve seat (3), top shock mount (7) between upper-end surface and the valve gap (10), flap (4), guide sleeve (5), form spring chamber (9) between valve gap (10) three, the face area of flap (4) in spring chamber (9) is greater than the face area of its sealing surface inboard, lower end 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 pressure tappings (2) and the spring chamber (9) of valve body of main valve (1) respectively, and outlet passage (11) consists of three-port structure by pilot valve lobe and inlet passage (19), floss hole passage (18); Be connected in series the pressure control switch of pressure transducer 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).
2. high-voltage electromagnetic gas 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 by 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 the pressure control switch of pressure transducer in the power circuit of solenoid valve, pressure transducer is installed on the medium pipeline that is communicated with valve body (1) pressure tappings (2).
3. high-voltage electromagnetic gas control Decompression valves according to claim 1, it is characterized in that being shaped with in the pilot valve body (14) guide valve seat and lower guide valve seat, upper guide valve seat is positioned at the entrance of pilot valve body (14) valve pocket floss hole passage (18), lower guide valve seat is positioned at the outlet of the inlet passage (19) of pilot valve body (14) valve pocket, pilot valve lobe (13) adopts round column structure, and its upper and lower end face is shaped with respectively the sealing surface that cooperatively interacts with upper guide valve seat and lower guide valve seat.
4. high-voltage electromagnetic gas control Decompression valves according to claim 3, it is characterized in that being shaped with annulus boss (17) on the cylndrical surface in pilot valve lobe (13) neutral position, between the pilot valve body (14) in this annulus boss (17) and the lower guide valve seat outside, be provided with holddown spring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220137630 CN202646808U (en) | 2012-03-29 | 2012-03-29 | High-pressure electromagnetic air control decompression valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220137630 CN202646808U (en) | 2012-03-29 | 2012-03-29 | High-pressure electromagnetic air control decompression valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646808U true CN202646808U (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220137630 Expired - Lifetime CN202646808U (en) | 2012-03-29 | 2012-03-29 | High-pressure electromagnetic air control decompression valve |
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| Country | Link |
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| CN (1) | CN202646808U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620017A (en) * | 2012-03-29 | 2012-08-01 | 天正阀门有限公司 | High-pressure electromagnetic pneumatic-control decompression valve |
| 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 |
| CN108488450A (en) * | 2018-04-29 | 2018-09-04 | 哈电集团哈尔滨电站阀门有限公司 | A kind of electromagnet bleeder valve |
| CN109630728A (en) * | 2019-01-15 | 2019-04-16 | 王欣 | A kind of pilot operated safety valve |
-
2012
- 2012-03-29 CN CN 201220137630 patent/CN202646808U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620017A (en) * | 2012-03-29 | 2012-08-01 | 天正阀门有限公司 | High-pressure electromagnetic pneumatic-control decompression valve |
| 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 |
| CN108488450A (en) * | 2018-04-29 | 2018-09-04 | 哈电集团哈尔滨电站阀门有限公司 | A kind of electromagnet bleeder valve |
| CN109630728A (en) * | 2019-01-15 | 2019-04-16 | 王欣 | A kind of pilot operated safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |