CN105318054A - Membrane auxiliary type compression bar destabilizing pressure relief device applied to micro-pressure working condition - Google Patents
Membrane auxiliary type compression bar destabilizing pressure relief device applied to micro-pressure working condition Download PDFInfo
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- CN105318054A CN105318054A CN201510091179.0A CN201510091179A CN105318054A CN 105318054 A CN105318054 A CN 105318054A CN 201510091179 A CN201510091179 A CN 201510091179A CN 105318054 A CN105318054 A CN 105318054A
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- pressure
- diaphragm
- relief device
- pressure relief
- auxiliary type
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Abstract
The invention discloses a membrane auxiliary type compression bar destabilizing pressure relief device applied to the micro-pressure working condition. The membrane auxiliary type compression bar destabilizing pressure relief device is a combination of a blasting needle device and a membrane device. The Eular law of slender bar destabilizing is applied to the trigger of a priority valve of the membrane auxiliary type compression bar destabilizing pressure relief device. The destabilizing force of the slender bar mainly comes from the thrust of a membrane under the action of the medium pressure. Meanwhile, the priority valve controls the compression state of a compression spring, and when the medium pressure reaches the trigger pressure of the priority valve, the compressed spring is released by the priority valve and drives a piston to be disengaged from the sealing face of a valve body, and the device is switched to be in an on-state from an off-state to achieve the purpose of pressure relief. The membrane auxiliary type compression bar destabilizing pressure relief device can be applied to the micro-pressure working condition due to the priority valve provided with a membrane structure, and is high in precision.
Description
Technical field
The present invention relates to a kind of pressure relief device, relate to a kind of pressure relief device can automatically can opened when pressure exceedes setting value more specifically.
Background technique
In order to protect the equipment such as petroleum storage tank not by the infringement of superpressure, need to be arranged on the device automatically opening pressure release when tank inner pressure transfinites.The superpressure that petroleum storage tank can allow is usually very low, and this proposes very high requirement for pressure relief device.
The present invention is a kind of diaphragm auxiliary type strut buckling flip-over type pressure relief device being applicable to minute-pressure operating mode, and it designs the principle based on pressure bar stabilization and strut buckling.Pressure medium acts on and diaphragm and produce thrust load, and this thrust load is by being carried in elongate rod with the connecting rod of diaphragm one.When the Buckling Load of the active force that pressure medium produces on diaphragm lower than elongate rod, elongate rod is stablized, and the end thrust of elongate rod will make diaphragm and associated components maintain its home position, and pressure relief device is in closed condition; When the active force that pressure medium produces on diaphragm exceedes the ultimate load of elongate rod, elongate rod generation unstability and bending, and then the position of triggering associated components changes to the position that can make valve opening, thus the pressure release of implement device.
Through looking into, there is no diaphragm auxiliary type strut buckling flip-over type pressure relief device at present.
Summary of the invention
By the spring assistant explosion needle-like minute-pressure pressure relief device of strut buckling trigger action under the superpressure operating mode that the present invention relates to, critical piece comprises valve body, main valve piston, valve gap, Compress Spring, pivoted arm, pilot valve piston rod, elongate rod, diaphragm housing, pin cage, nut, pressure communication pipeline and diaphragm and pilot valve.
Wherein, pilot valve is made up of parts such as Compress Spring, pivoted arm, band diaphragm-type servo unit bar, elongate rod, diaphragm housing, pin cage, nut and diaphragms.Trigger component is elongate rod, and it is installed on valve body outside, and one end connects with pilot valve piston rod, and the other end connects with the nut being installed on pin cage.The pressure medium of valve body upstream is entered in diaphragm housing by pressure communication pipeline, acts on the assemblying body of diaphragm and pilot valve piston rod, and then is acted in elongate rod by pilot valve piston rod.When the pressure medium from valve body upstream is lower than setting value, pressure medium is less than the ultimate load of elongate rod by the thrust load that pilot valve piston rod acts in elongate rod, elongate rod keeps stable, pilot valve piston rod is in working position one, now pivoted arm is stuck in the inside groove of pilot valve piston rod, and make Compress Spring be in compressive state not to be released, main valve piston does not depart from valve body, and device is in closed condition; When the pressure medium from valve body upstream reaches setting value, pressure medium is greater than the ultimate load of elongate rod by diaphragm and the pilot valve piston rod thrust load acted in elongate rod, elongate rod unstability causes its effective length moment significantly to diminish, pilot valve piston rod moves to working position two under pressure medium promotes, now pivoted arm departs from the inside groove of band diaphragm-type servo unit bar, Compress Spring is discharged by compressive state, main valve piston is driven to depart from valve body, device is converted to opening state, thus achieves the object that superpressure operating mode lower device opens pressure release automatically.
Accompanying drawing explanation
Fig. 1 is the main structure figure being applicable to the diaphragm auxiliary type strut buckling pressure relief device of minute-pressure operating mode that the present invention relates to;
Fig. 2 be the present invention relates to be applicable to the diaphragm auxiliary type strut buckling pressure relief device normal state of minute-pressure operating mode time schematic diagram;
Fig. 3 be the present invention relates to be applicable to the diaphragm auxiliary type strut buckling pressure relief device abnormal condition of minute-pressure operating mode time schematic diagram;
Embodiment
Spring assistant explosion needle-like minute-pressure pressure relief device, critical piece comprises valve body 1, main valve piston 2, valve gap 3, Compress Spring 4, pivoted arm 5, pilot valve piston rod 6, elongate rod 7, diaphragm housing 8, pin cage 9, nut 10, pressure communication pipeline 11, diaphragm 12 and pilot valve 13.See Fig. 1.
The pilot valve 13 be wherein made up of Compress Spring 4, pivoted arm 5, pilot valve piston rod 6, elongate rod 7, diaphragm housing 8, pin cage 9, nut 10 and diaphragm 12 is trigger mechanisms of whole device.Its diaphragm housing 8 by pressure communication pipeline 11 and valve body 1 upstream phase repeatedly.
Introduce the specific embodiment of the present invention below.
In normal conditions, pressure medium is through pressure communication pipeline 11, and acting on diaphragm 12 and to be less than the ultimate load of elongate rod 7 by pilot valve piston rod 6 power passed in elongate rod 7, now elongate rod 7 keeps stable.Now pivoted arm 5 is stuck in the inside groove of pilot valve piston rod 6, and Compress Spring 4 is locked at compressive state, and main valve piston 2 does not depart from the sealing surface on valve body 1, and device is in closed condition.See Fig. 2.
When the pressure medium of valve body 1 upstream reaches setting value, pressure medium is through pressure communication pipeline 11, to act on diaphragm 12 and to be greater than the ultimate load of elongate rod 7 by pilot valve piston rod 6 power passed in elongate rod 7, elongate rod 7 unstability, now its effective length moment significantly diminishes, its thrust acted on pilot valve piston rod 6 can reduce suddenly, pilot valve piston rod 6 pressure medium promote under action to working position two, now pivoted arm 5 departs from from the inside groove of pilot valve piston rod 6, the locking power that pivoted arm 5 acts on Compress Spring 4 also can disappear thereupon, Compress Spring 4 is released from compressive state, now Compress Spring 4 drives main valve piston 2 to depart from sealing surface on valve body 1, device is converted to opens pressure release state.See Fig. 3.
In addition, according to the Euler law of strut buckling, its ultimate load can be changed by the Young's modulus of adjustment elongate rod 7 and slenderness ratio, and then setting pressure during modifier action.
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. be applicable to a diaphragm auxiliary type strut buckling pressure relief device for minute-pressure operating mode, critical piece comprises valve body (1), main valve piston (2), valve gap (3), Compress Spring (4), pivoted arm (5), pilot valve piston rod (6), elongate rod (7), diaphragm housing (8), pin cage (9), nut (10), pressure communication pipeline (11), diaphragm (12) and pilot valve (13).
2. the diaphragm auxiliary type strut buckling pressure relief device being applicable to minute-pressure operating mode according to claim 1, the predominant intermolecular forces that the thrust that its application diaphragm (12) is subject to pressure medium generation triggers as elongate rod (7).
3. the diaphragm auxiliary type strut buckling pressure relief device being applicable to minute-pressure operating mode according to claim 1, the pilot valve (13) that its trigger architecture is Compress Spring (4), pivoted arm (5), pilot valve piston rod (6), elongate rod (7), diaphragm housing (8), pin cage (9), nut (10) and diaphragm (12) form.
4. pilot valve according to claim 3 (13), its trigger component elongate rod (7) applies the Euler law of strut buckling, and its ultimate load can be changed by adjustment material and slenderness ratio, and then setting pressure during modifier action.
5. pilot valve according to claim 3 (13), its diaphragm housing (8) is connected with valve body (1) upstream by pressure communication pipeline (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510091179.0A CN105318054A (en) | 2015-02-28 | 2015-02-28 | Membrane auxiliary type compression bar destabilizing pressure relief device applied to micro-pressure working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510091179.0A CN105318054A (en) | 2015-02-28 | 2015-02-28 | Membrane auxiliary type compression bar destabilizing pressure relief device applied to micro-pressure working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105318054A true CN105318054A (en) | 2016-02-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510091179.0A Withdrawn CN105318054A (en) | 2015-02-28 | 2015-02-28 | Membrane auxiliary type compression bar destabilizing pressure relief device applied to micro-pressure working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105318054A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594365A (en) * | 2016-03-30 | 2017-04-26 | 江苏瑞朗博机械设备有限公司 | Automatic valve applicable to low pressure working conditions and triggered to act through pressure bar destabilizing |
| CN114151550A (en) * | 2021-12-09 | 2022-03-08 | 徐州八方安全设备有限公司 | Reclosing type bending pin valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2309470Y (en) * | 1997-09-25 | 1999-03-03 | 文代龙 | Leading gas safety relief valve |
| EP2048419B1 (en) * | 2007-10-09 | 2014-03-05 | smartGAS Mikrosensorik GmbH | Own-medium-controlled blocking valve |
| CN203571135U (en) * | 2013-10-11 | 2014-04-30 | 上海彭畅机械设备有限公司 | Needle type safety valve |
-
2015
- 2015-02-28 CN CN201510091179.0A patent/CN105318054A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2309470Y (en) * | 1997-09-25 | 1999-03-03 | 文代龙 | Leading gas safety relief valve |
| EP2048419B1 (en) * | 2007-10-09 | 2014-03-05 | smartGAS Mikrosensorik GmbH | Own-medium-controlled blocking valve |
| CN203571135U (en) * | 2013-10-11 | 2014-04-30 | 上海彭畅机械设备有限公司 | Needle type safety valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594365A (en) * | 2016-03-30 | 2017-04-26 | 江苏瑞朗博机械设备有限公司 | Automatic valve applicable to low pressure working conditions and triggered to act through pressure bar destabilizing |
| CN106594365B (en) * | 2016-03-30 | 2017-12-15 | 江苏瑞朗博机械设备有限公司 | Suitable for the automatic valve by strut buckling trigger action of low pressure operating mode |
| CN114151550A (en) * | 2021-12-09 | 2022-03-08 | 徐州八方安全设备有限公司 | Reclosing type bending pin valve |
| CN114151550B (en) * | 2021-12-09 | 2023-09-12 | 徐州八方安全设备有限公司 | Reclosing type buckling pin valve |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160218 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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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160210 |