CN104847934A - Automatic valve triggered to act by instability of pressure rod under overpressure working condition - Google Patents
Automatic valve triggered to act by instability of pressure rod under overpressure working condition Download PDFInfo
- Publication number
- CN104847934A CN104847934A CN201410052581.3A CN201410052581A CN104847934A CN 104847934 A CN104847934 A CN 104847934A CN 201410052581 A CN201410052581 A CN 201410052581A CN 104847934 A CN104847934 A CN 104847934A
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- China
- Prior art keywords
- valve
- core assembly
- pressure
- elongate rod
- mangetic core
- Prior art date
- 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
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- 230000001960 triggered effect Effects 0.000 title claims abstract 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 8
- 230000006641 stabilisation Effects 0.000 claims description 6
- 238000011105 stabilization Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims 1
- 239000008358 core component Substances 0.000 abstract 4
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to an automatic valve triggered to act by instability of a pressure rod under an overpressure working condition. The automatic valve mainly consists of a pneumatic actuator, a switch valve and a two-position multi-channel reversing valve controlled by the instability of the pressure rod. The reversing valve comprises such main parts as a rod cap, a rod cage, a slender rod, a valve body, a valve core component and an end cover, and is designed based on a pressure rod instability principle; the valve core component bears the pressure load from a pipe; the load is loaded on the slender rod; when the acting force generated by the medium pressure in the pipe is lower than the critical load of the slender rod, the axial thrust of the slender rod enables the valve core component to be positioned in a working position 1, and a power air source flowing through an internal channel of the reversing valve can enable the automatic valve to be positioned in a normal valve position; and when the acting force generated by the medium pressure is beyond the critical load of the slender rod, the slender rod loses the stability, the medium pressure pushes the valve core component to act to a working position 2, and the pneumatic actuator can drive the switch valve to automatically act from the normal valve position to an abnormal valve position so as to realize the automatic opening or closing of the valve under the overpressure working condition.
Description
Technical field
The present invention relates to a kind of automatic valve, relate to a kind of valve can automatically can opened or close when pressure exceedes setting value more specifically.
Background technique
In order to protect device and the equipment of pressure piping, pressurized container and their upstream and downstream, the valve can automatically opened or close under often needing to be arranged on superpressure operating mode.In practice in the past, pressure in usual use pressure transmitter detected pressures pipeline or pressurized container, pressure transmitter outputs signal to control system, when pressure exceedes setting value, control system can send instruction and change the power supply state being installed on the solenoid valve of pneumatic actuator supply air line, and then change the state of solenoid valve air-flow path, thus make pneumatic actuator action, reach the object of unlatching or throttle down.
The solenoid valve wherein used is a kind of two multi-channel reversing valve doors of Electromagnetic Control, is usually made up of electromagnetic component and two multiple-way valve bodies.Electromagnetic component is made up of the parts such as electromagnetic coil and magnetic core, and valve body is made up of parts such as spool, valve body and springs.Two refer to that spool has two working positions relative to valve body.When electromagnetic coil energising or power-off, the acting in conjunction of electromagnetic force and spring force will make spool from a working position action to another one working position, and then change the passage of solenoid valve inside, reach and control the object of power gas source by required passage turnover pneumatic actuator.
Use pressure transmitter, solenoid valve, pneumatic actuator, main valve and control system jointly to realize the main potential risk of automatic on-off valve under superpressure operating mode to be, if pressure transmitter lost efficacy, or the Signal transmissions between pressure transmitter and control system, or the power supply of solenoid valve goes wrong, just may occur that pressure exceedes setting pressure, pneumatic actuator does not but make the situation of main valve action as scheduled, brings threat to the device of pressure piping, pressurized container and their upstream and downstream and equipment.
The present invention is primarily of pneumatic actuator, switch valve and two multi-channel reversing valve compositions.Wherein, the design of two multi-channel reversing valves is based on the principle of pressure bar stabilization and strut buckling, its mangetic core assembly bears from the pressure loading in pipeline, this load will be carried in elongate rod, when the ultimate load of active force lower than elongate rod that the pressure medium in pipeline produces, elongate rod is stablized, and the end thrust of elongate rod makes mangetic core assembly be in working position one, and the power gas source now flowing through selector valve inner passage can make automatic valve be in normal valve position; When the active force that pressure medium produces exceedes the ultimate load of elongate rod, elongate rod unstability, pressure medium can promote mangetic core assembly, make mangetic core assembly action to working position two, now pneumatic actuator meeting driving switch valve auto-action, valve will change into improper valve position by normal valve position, thus achieve automatic unlatching or the closedown of superpressure operating mode lower valve.In this application, the function of pressure transmitter, solenoid valve and control system three is achieved based on two multiple-way valves of pressure bar stabilization and strut buckling principle design.
Through looking into, the valve of auto-action under superpressure operating mode designed based on pressure bar stabilization and strut buckling principle at present.
Summary of the invention
The parts such as two multi-channel reversing valves, connecting tube and source gas line being controlled primarily of pneumatic actuator, main valve, strut buckling by the automatic valve of strut buckling trigger action under the superpressure operating mode that the present invention relates to form, wherein the function of connecting tube is connected at the piston cavity of the upstream of main valve with two multi-channel reversing valves, makes the mangetic core assembly of two multi-channel reversing valves bear pressure from automatic valve upstream.
Wherein, the critical piece of two multi-channel reversing valves of strut buckling control comprises pole cap 1, bar cage 2, elongate rod 3, valve body 4, mangetic core assembly 5 and end cap 6 etc.Triggering the parts that the mangetic core assembly of two multi-channel reversing valves changes its working position and then realize power gas source commutation is elongate rod 6, and it is outside that it is installed on valve body 4, and one end connects with mangetic core assembly 5, and the other end connects with the pole cap 1 being installed on bar cage 2.When the pressure from automatic valve upstream is lower than set point, the load that elongate rod 3 is born is less than ultimate load and pressure bar stabilization, the end thrust of elongate rod makes mangetic core assembly 5 be in working position one, and the power gas source now flowing through selector valve inner passage can make automatic valve be in normal valve position; When the pressure from automatic valve upstream is higher than specified point, the load that elongate rod 3 is born will exceed ultimate load and strut buckling, now its effective length can significantly diminish moment, its thrust acted on mangetic core assembly 5 can reduce suddenly, mangetic core assembly 5 under pressure medium can promote action to working position two, now automatic valve meeting auto-action, automatic valve will change into improper valve position (if automatic valve is in standard-sized sheet position under nominal situation by normal valve position, then under superpressure operating mode, automatic valve should be closed automatically, and valve position becomes complete shut-down position; If automatic valve is in complete shut-down position under nominal situation, then under superpressure operating mode, automatic valve should be opened automatically, and valve position becomes standard-sized sheet position), thus achieve automatic unlatching or the closedown of superpressure operating mode lower valve.
One end of mangetic core assembly 5 is positioned at valve body 1 outside, connects with pilot valve elongate rod 6; Other one end of mangetic core assembly 5 is piston shape parts, is formed and seals and then form piston cavity, the pressure that piston-type member will be born from automatic valve upstream between this piston-type member and valve body 1; Many places seal element is provided with between the intermediate portion of mangetic core assembly 5 and valve body 1, multiple sealing channel can be formed between mangetic core assembly 5 and valve body 1, by changing the working position of mangetic core assembly 5, the relative position between the air inlet/outlet on these sealing channels and valve body 1 can be changed, thus change the circulation passage of source of the gas of taking offence, reach the object making automatic valve open or close.
After there is strut buckling and automatic valve auto-action in elongate rod 3 and pressure recover in pressure piping is normal, pressure can be applied to mangetic core assembly 5 from valve body outside, make it restore to working position one, now the circulation passage of power gas source can change, and then the valve position under making automatic valve return to its nominal situation.After automatic valve resets, elongate rod 3 is changed thus completes whole reseting procedure.
Accompanying drawing explanation
Fig. 1 is the main structure figure by the automatic valve of strut buckling trigger action under the superpressure operating mode that the present invention relates to;
Fig. 2 is the schematic diagram that source gas line and the interface and power gas source with final controlling element and two multi-channel reversing valves pass in and out final controlling element when being adopted double-action final controlling element by the automatic valve of strut buckling trigger action and be in normal valve position under the superpressure operating mode that the present invention relates to;
When Fig. 3 is the automatic valve employing double-action final controlling element by strut buckling trigger action under the superpressure operating mode that the present invention relates to, after elongate rod generation strut buckling, power gas source passes in and out the schematic diagram of final controlling element;
Fig. 4 is the schematic diagram that source gas line and the interface and power gas source with final controlling element and two multi-channel reversing valves pass in and out final controlling element when being adopted single-acting executor by the automatic valve of strut buckling trigger action and be in normal valve position under the superpressure operating mode that the present invention relates to;
When Fig. 5 is the automatic valve employing single-acting executor by strut buckling trigger action under the superpressure operating mode that the present invention relates to, after elongate rod generation strut buckling, power gas source passes in and out the schematic diagram of final controlling element.
Embodiment
By the automatic valve of strut buckling trigger action under superpressure operating mode, critical piece comprises main valve 14, pneumatic actuator 13, source gas line 12, connecting tube 10, pole cap 1, bar cage 2, elongate rod 3, valve body 4, mangetic core assembly 5 and end cap 6, sees Fig. 1.
The function of connecting tube 10 is connected at the piston cavity of the upstream of main valve 14 with two multi-channel reversing valves, makes the mangetic core assembly 5 of two multi-channel reversing valves bear pressure from automatic valve upstream.
Final controlling element 13 can be that (final controlling element is provided with two air chambers to double-action final controlling element, power gas source can enter two air chambers respectively, main valve action under the thrust difference effect that the pressure of two air chambers produces), also can be that (final controlling element is only provided with an air chamber to single-acting executor, also spring is housed in addition, main valve action under the difference effect between the thrust and spring force of power gas source formation).
The part that mangetic core assembly 5 is positioned at valve body 1 outside connects with elongate rod 6; The part that mangetic core assembly 5 is arranged in valve body 1 inside comprises piston shape parts, is formed and seals and then form piston cavity, the pressure that piston-type member will be born from main valve 14 downstream between this piston-type member and valve body 1; Mangetic core assembly 5 is provided with many places seal element between a part and valve body 1 in addition, multiple sealing channel (required sealing channel quantity is determined according to the type of adopted pneumatic actuator 13) can be formed between mangetic core assembly 5 and valve body 1, by changing the working position of mangetic core assembly 5, the relative position between the air inlet/outlet on these sealing channels and valve body 1 can be changed, thus change the circulation passage of source of the gas of taking offence, reach the object making automatic valve open or close.
Triggering the parts that the mangetic core assembly 5 of two multi-channel reversing valves changes its working position and then realize power gas source commutation is elongate rod 6, and it is outside that it is installed on valve body 4, and one end connects with mangetic core assembly 5, and the other end connects with the pole cap 1 being installed on bar cage 2.
Power gas source, two multi-channel reversing valves are connected with final controlling element 13 by source gas line 12, enable power gas source according to open or close main valve 14 need pass in and out final controlling element 13.When main valve 14 is designed to automatically open under superpressure operating mode, the interface of source gas line 12 automatic source gas line 12 and final controlling element 13 when closing under being designed to superpressure operating mode with the interface of final controlling element 13 with main valve 14 is different.Below automatically open under being only designed to superpressure operating mode for main valve 14 and introduce the specific embodiment of the present invention.
When automatic valve of the present invention is designed to automatically open under superpressure operating mode, main valve 14 is in complete shut-down position in normal conditions.Now, from the pressure of automatic valve upstream lower than set point, the load that elongate rod 3 is born is less than ultimate load and pressure bar stabilization, the end thrust of elongate rod makes mangetic core assembly 5 be in working position one, according to double-action pneumatic actuator, source gas line 12 passes in and out the situation of final controlling element 13 as shown in Figure 2 with the interface and power gas source with final controlling element 13 and two multi-channel reversing valves; According to single-action pneumatic executor, source gas line 12 passes in and out the situation of final controlling element 13 as shown in Figure 4 with the interface and power gas source with final controlling element 13 and two multi-channel reversing valves.
When the pressure from automatic valve upstream is higher than specified point, the load that elongate rod 3 is born will exceed ultimate load and strut buckling, now its effective length can significantly diminish moment, its thrust acted on mangetic core assembly 5 can reduce suddenly, mangetic core assembly 5 under pressure medium can promote action to working position two, now the inner passage of selector valve can change, power gas source is made to enter final controlling element 13 according to the mode required for Open valve, final controlling element 13 will open main valve 14, thus achieves the automatic unlatching of superpressure operating mode lower valve.According to double-action pneumatic actuator, after strut buckling occurs elongate rod 3, power gas source passes in and out the situation of final controlling element 13 as shown in Figure 3; According to single-action pneumatic executor, after strut buckling occurs elongate rod 3, power gas source passes in and out the situation of final controlling element 13 as shown in Figure 5.
Elongate rod 3 occur strut buckling and main valve 14 automatically open and pressure recover in pressure piping normal after, pole cap 1 is hung, take out the elongate rod 3 of unstability, then from valve body 4 outside, pressure is applied to mangetic core assembly 5, make it restore to working position one, now power gas source can enter final controlling element 13 according to the mode required for throttle down and close main valve 14, even if main valve 14 returns to the valve position (complete shut-down position) under its nominal situation.After main valve 14 resets, the elongate rod 3 more renewed, and outstanding tight pilot valve pole cap 1, thus complete whole reseting procedure.
In addition, according to the Euler law of strut buckling, its ultimate load can be changed by adjustment its Young's modulus of elongate rod 3 and slenderness ratio, and then setting pressure during change valve auto-action.
When automatic valve of the present invention is designed to automatically close under superpressure operating mode, interface pilot valve downstream line 12 being entered main valve final controlling element 13 is only needed to exchange.Embodiment and valve design are identical when automatically opening under superpressure operating mode, do not repeat them here.
All features disclosed in this specification, or the step in disclosed all methods or process, except the special type mutually repelled and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalence or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (5)
1. under a superpressure operating mode by the automatic valve of strut buckling trigger action, critical piece comprises main valve (14), pneumatic actuator (13), source gas line (12), connecting tube (10), pole cap (1), bar cage (2), elongate rod (3), valve body (4), mangetic core assembly (5) and end cap (6), it is characterized in that: the working position of trigger valve core assembly (5) changes and makes power gas source commutate and then make the parts of automatic valve action be elongate rod (3), triggered the action of main valve (14) by the strut buckling of elongate rod (3) under superpressure operating mode.
2. under superpressure operating mode according to claim 1 by the automatic valve of strut buckling trigger action, wherein the upstream of main valve (14) is connected with the piston cavity of two multi-channel reversing valves by connecting tube (10), the mangetic core assembly of two multi-channel reversing valves (5) is made to bear pressure from main valve (14) upstream, when pressure is lower than set point, the load that elongate rod (3) is born is less than ultimate load and pressure bar stabilization, the end thrust of elongate rod (3) makes mangetic core assembly (5) be in working position one, the power gas source now flowing through selector valve inner passage can make main valve (14) be in normal valve position, when power is higher than specified point, the load that elongate rod (3) is born will exceed ultimate load and strut buckling, mangetic core assembly (5) under pressure medium can promote action to working position two, now main valve (14) meeting auto-action, main valve (14) will change into improper valve position by normal valve position.
3. under superpressure operating mode according to claim 1 by the automatic valve of strut buckling trigger action, wherein elongate rod (3) is installed on valve body (4) outside, one end connects with mangetic core assembly (5), and the other end connects with the pole cap (1) being installed on bar cage (2); After automatic valve action, working position can be made it restore to from valve body is outside to mangetic core assembly (5) applying pressure, elongate rod (3) is changed.
4. under superpressure operating mode according to claim 1 by the automatic valve of strut buckling trigger action, the part that wherein mangetic core assembly (5) is arranged in valve body (1) inner comprises piston shape parts, formed between this piston-type member and valve body (1) and seal, will the pressure from main valve downstream be born; Mangetic core assembly (5) is provided with many places seal element between a part and valve body (1) in addition, multiple sealing channel (required sealing channel quantity is determined according to the type of adopted pneumatic actuator) can be formed between mangetic core assembly (5) and valve body (1), by changing the working position of mangetic core assembly (5), the relative position between the air inlet/outlet on these sealing channels and valve body (1) can be changed, thus change the circulation passage of source of the gas of taking offence, reach the object making pneumatic valve open or close.
5. under superpressure operating mode according to claim 1 by the automatic valve of strut buckling trigger action, elongate rod (3) wherein can by adjustment and slenderness ratio and change its ultimate load, and then setting pressure during change valve auto-action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052581.3A CN104847934A (en) | 2014-02-17 | 2014-02-17 | Automatic valve triggered to act by instability of pressure rod under overpressure working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052581.3A CN104847934A (en) | 2014-02-17 | 2014-02-17 | Automatic valve triggered to act by instability of pressure rod under overpressure working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104847934A true CN104847934A (en) | 2015-08-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410052581.3A Pending CN104847934A (en) | 2014-02-17 | 2014-02-17 | Automatic valve triggered to act by instability of pressure rod under overpressure working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104847934A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594338A (en) * | 2015-11-02 | 2017-04-26 | 江苏瑞朗博机械设备有限公司 | Automatic valve triggered to act by unstable pressure lever during over-pressing |
| CN108006282A (en) * | 2017-11-17 | 2018-05-08 | 北京航天石化技术装备工程有限公司 | A kind of pneumatic pilot-operated type explosion type pressure relief device |
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| CN1073781A (en) * | 1991-12-20 | 1993-06-30 | 北京市西城区新开通用试验厂 | A kind of electromechanical integrated digital-control pneumatic regulating valve |
| JP2010140189A (en) * | 2008-12-10 | 2010-06-24 | Osaka Gas Co Ltd | Secondary pressure monitoring device and secondary pressure discrimination method |
| CN202392208U (en) * | 2011-12-28 | 2012-08-22 | 西安航天动力研究所 | Pilot-operated type water attack relief valve system |
| CN102678951A (en) * | 2012-05-29 | 2012-09-19 | 浙江中超工业视镜有限公司 | Automatic pressure regulating type gate valve |
| CN202451905U (en) * | 2012-02-20 | 2012-09-26 | 刘海亮 | Compression bar buckling trigger type pilot-operated pressure release valve |
| CN103438254A (en) * | 2013-08-06 | 2013-12-11 | 西仪集团有限责任公司 | Mechanical pressure overload protector |
| CN103470215A (en) * | 2012-06-08 | 2013-12-25 | 刘海亮 | Compression bar buckling triggering type wellhead safety valve |
| CN204062041U (en) * | 2014-02-17 | 2014-12-31 | 刘海亮 | By the automatic valve of strut buckling trigger action under superpressure operating mode |
-
2014
- 2014-02-17 CN CN201410052581.3A patent/CN104847934A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073781A (en) * | 1991-12-20 | 1993-06-30 | 北京市西城区新开通用试验厂 | A kind of electromechanical integrated digital-control pneumatic regulating valve |
| JP2010140189A (en) * | 2008-12-10 | 2010-06-24 | Osaka Gas Co Ltd | Secondary pressure monitoring device and secondary pressure discrimination method |
| CN202392208U (en) * | 2011-12-28 | 2012-08-22 | 西安航天动力研究所 | Pilot-operated type water attack relief valve system |
| CN202451905U (en) * | 2012-02-20 | 2012-09-26 | 刘海亮 | Compression bar buckling trigger type pilot-operated pressure release valve |
| CN102678951A (en) * | 2012-05-29 | 2012-09-19 | 浙江中超工业视镜有限公司 | Automatic pressure regulating type gate valve |
| CN103470215A (en) * | 2012-06-08 | 2013-12-25 | 刘海亮 | Compression bar buckling triggering type wellhead safety valve |
| CN103438254A (en) * | 2013-08-06 | 2013-12-11 | 西仪集团有限责任公司 | Mechanical pressure overload protector |
| CN204062041U (en) * | 2014-02-17 | 2014-12-31 | 刘海亮 | By the automatic valve of strut buckling trigger action under superpressure operating mode |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594338A (en) * | 2015-11-02 | 2017-04-26 | 江苏瑞朗博机械设备有限公司 | Automatic valve triggered to act by unstable pressure lever during over-pressing |
| WO2017076370A1 (en) * | 2015-11-02 | 2017-05-11 | Jiangsu Reliable Mechanical Equipment Co., Ltd | An actuated valve system triggered by the failure of a collapsible pin under overpressure condition |
| CN108006282A (en) * | 2017-11-17 | 2018-05-08 | 北京航天石化技术装备工程有限公司 | A kind of pneumatic pilot-operated type explosion type pressure relief device |
| CN108006282B (en) * | 2017-11-17 | 2023-12-15 | 北京航天石化技术装备工程有限公司 | Pneumatic pilot blasting type pressure relief device |
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Effective date of registration: 20160225 Address after: 211316, No. 12 Tan Avenue, Gaochun Economic Development Zone, Nanjing, Jiangsu Applicant after: JIANGSU RUILANGBO MECHANICAL EQUIPMENT CO., LTD. Address before: 100176 No. 2 North Yongchang Road, Beijing economic and Technological Development Zone, Beijing Applicant before: Liu Hailiang Applicant before: Zhang Zaixiao Applicant before: Wang Lei Applicant before: Zhao Shoujun |
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Application publication date: 20150819 |
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