CN103486305A - Compression rod triggered type high-pressure and low-pressure emergency shutoff valve - Google Patents
Compression rod triggered type high-pressure and low-pressure emergency shutoff valve Download PDFInfo
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- CN103486305A CN103486305A CN201210189743.9A CN201210189743A CN103486305A CN 103486305 A CN103486305 A CN 103486305A CN 201210189743 A CN201210189743 A CN 201210189743A CN 103486305 A CN103486305 A CN 103486305A
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- 230000001960 triggered effect Effects 0.000 title claims abstract description 6
- 230000006835 compression Effects 0.000 title abstract description 4
- 238000007906 compression Methods 0.000 title abstract description 4
- 238000007789 sealing Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 230000001687 destabilization Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000003042 antagnostic effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to a compression rod triggered type high-pressure and low-pressure emergency shutoff valve which mainly comprises a valve body, a valve flap, a valve seat, a valve rod, a stop, a valve cover, a slender rod, a rod cage, a rod cap, a spring, a sliding rod, a resetting nut and the like, wherein the slender rod is a trigger component of the shutoff valve, and the valve is shut off through destabilization or sliding-off of the slender rod. By using the shutoff valve, when pressure in a pipeline is higher than a high-pressure set value of the valve or lower than a low-pressure set value of the valve, the pipeline can be shut off in time. When the pipeline pressure is higher than the high-pressure set value, the valve is triggered to shut off through the destabilization of a compression rod of the slender rod; when the pipeline pressure is lower than the low-pressure set value, the valve is triggered to shut off through the sliding-off of the slender rod. The shutoff valve has the characteristics of high trigger precision, simple structure, high stability, convenience in resetting and the like.
Description
Technical field
The present invention relates in the Gas Exploitation And Transmission well site for ensureing the high-pressure and low-pressure emergency shutdown valve of station equipment or gas pipeline safety.
Background technique
The safety shut-off valves of controlling rock gas output is installed on ground, Gas Exploitation And Transmission well site.This is because some fault of upstream line, valve or equipment can cause pipeline pressure to raise, thereby pipeline or the equipment in downstream is caused damage, even initiation potential; When the inefficacy of downstream line, valve or equipment or while breaking, can cause the reduction of pipeline pressure in addition, rock gas can be discharged in atmosphere in this case, has both polluted atmosphere, exists and causes the hidden danger of fire and blast again, and cause economic loss.The effect of well head safe shut-off valve is to be elevated to the high pressure setting value and, when pipeline pressure drops to the low pressure setting value, can to close in time natural gas line when pipeline pressure, thereby protection equipment reduces economic loss, reduces potential safety hazard.
Most well head safe shut-off valve has two kinds of structures: the first is by two independently valve series connection, and a valve turn-offs at high pressure, and another valve turn-offs in low pressure; The second forms by a valve with hydraulic control system two-part, each functional part of hydraulic control system is independent installation respectively, between parts and parts, adopt pipeline to be connected, so, just cause the connecting tube line length between each parts, the situation that jointing is many, made potential leakage point showed increased.In addition, the moving element of shut-off valve itself is also more, and these factors all can cause the reliability decrease of whole shut-off valve system.
Summary of the invention
The purpose of this invention is to provide a kind of depression bar flip-over type high-pressure and low-pressure emergency shutdown valve.This shut-off valve can be realized can in time turn-offing pipeline higher than the high pressure setting value with when pipeline pressure during lower than the low pressure setting value when pipeline pressure.It during higher than the high pressure setting value, is triggered the shutoff of valve at pipeline pressure by the strut buckling of elongate rod; It is at pipeline pressure during lower than the low pressure setting value; The shutoff that triggers valve that skids off by elongate rod.This emergency shutdown valve has that triggering precision is high, simple in structure, good stability and the advantage such as convenient that resets.
Technological scheme of the present invention is as follows:
A kind of depression bar flip-over type high-pressure and low-pressure emergency shutdown valve, its critical piece comprises valve body, flap, valve seat, valve rod, block, valve gap, elongate rod, bar cage, pole cap, spring, slide bar and reduction nut etc.The working principle of valve is as follows: valve rod is subject to the effect of valve body inside and outside differential pressure, produces an axial force made progress.This axial force is delivered on slide bar by elongate rod, and the elongate rod upper end is contacted with slide bar, and produces frictional force.Under nominal situation, the intrinsic axial force of elongate rod can support the axial force of valve rod, reaches balance between two forces.Frictional force between elongate rod upper end and slide bar is enough to the spring-back force of antagonistic spring to slide bar simultaneously, makes the slide bar transfixion, and now valve stays open state.Under damage, when pipeline pressure surpasses valve high pressure setting value, the axial force that valve rod produces under the effect of valve body inside and outside differential pressure is greater than the intrinsic axially support power of elongate rod.Now elongate rod generation unstability, valve rod moves up under the promotion of inside and outside differential pressure simultaneously, and make flap enter valve seat and form sealing, thus throttle down.When pipeline pressure, during lower than valve low pressure setting value, the frictional force between elongate rod upper end and slide bar is less than the spring-back force of spring to slide bar, and slide bar slides to the right, and elongate rod, through the hole on slide bar, slips into the pole cap upper end.Now valve rod has lost the support force of elongate rod, under the promotion of inside and outside differential pressure, moves up, and make flap enter valve seat and form sealing, thus throttle down.Wherein elongate rod is the trigger component of this shut-off valve, the unstability of elongate rod or skid off the shutoff that has realized valve.
Beneficial effect of the present invention is as follows:
1. depression bar flip-over type high-pressure and low-pressure emergency shutdown valve can be realized surpassing the high pressure setting value or can both Shuttoff Valve during lower than the low pressure setting value when pipeline pressure;
2. depression bar flip-over type high-pressure and low-pressure emergency shutdown valve adopts elongate rod as trigger component, because the unstability of elongate rod is followed Euler's formula, so the present invention has higher triggering precision during higher than the high pressure setting value at pipeline pressure.
3. depression bar flip-over type high-pressure and low-pressure emergency shutdown valve is simple in structure, only has two moving element one valve rods and slide bar, and valve rod and slide bar only do straight line motion, and its motion credibility and sealing reliability are higher.
4. namely replacing or the reseting procedure of elongate rod of the reseting procedure after depression bar flip-over type high-pressure and low-pressure emergency shutdown valve breakdown.The whole process operation time is short, without special tool(s), simple.
The accompanying drawing explanation
The main structure that accompanying drawing 1 is the depression bar flip-over type high-pressure and low-pressure emergency shutdown valve that the present invention relates to;
Schematic diagram when accompanying drawing 2 is worked under nominal situation for the depression bar flip-over type high-pressure and low-pressure emergency shutdown valve the present invention relates to;
The depression bar flip-over type high-pressure and low-pressure emergency shutdown valve schematic diagram when pressure higher than setting value trigger shutoff of accompanying drawing 3 for the present invention relates to;
The depression bar flip-over type high-pressure and low-pressure emergency shutdown valve schematic diagram when pressure lower than setting value trigger shutoff of accompanying drawing 4 for the present invention relates to;
Schematic diagram when accompanying drawing 5 resets for the depression bar flip-over type high-pressure and low-pressure emergency shutdown valve the present invention relates to;
Embodiment
A kind of depression bar flip-over type high-pressure and low-pressure emergency shutdown valve, its critical piece comprises valve body 1, flap 2, valve seat 3, valve rod 4, block 5, valve gap 6, elongate rod 7, bar cage 8, pole cap 9, spring 10, slide bar 11 and reduction nut 12 etc.As shown in Figure 1.Wherein elongate rod 7 is trigger components of depression bar flip-over type high-pressure and low-pressure emergency shutdown valve.
The specific embodiment of the present invention is: have radial hole on pole cap 9, from then on slide bar 11 passes in the middle of hole.Slide bar 11 1 ends are equipped with spring 10, have radial hole in the middle of slide bar 11 in addition, and the size in this hole just in time can make elongate rod 7 pass through.Slide bar 11 the other ends are threaded, and reduction nut 12 is housed.The lower end of elongate rod 7 and valve rod 4 join, and upper end withstands on slide bar 11.Valve rod 4 one ends withstand on elongate rod 7 outside valve body 1, and the other end passes valve gap 6, block 5 and valve seat 3, and is connected with flap 2.Differential pressure action inside and outside valve body 1, on valve rod 4, can form an axial force made progress acted on valve rod 4.
Under nominal situation, manifold pressure is in normal level, valve rod 4 is carried in the strut buckling ultimate load that thrust load on elongate rod 7 is less than elongate rod, elongate rod 7 keeps pressure bar stabilization, elongate rod 7 can support valve rod 4, frictional force between elongate rod 7 upper ends and slide bar 11 is enough to the spring-back force of 10 pairs of slide bars 11 of antagonistic spring simultaneously, makes slide bar 11 transfixions.Now, medium can be by the pipeline downstream of the cavity flow between valve body 1 inner valve stem 4 and valve seat 3, and valve stays open state.As shown in Figure 2.
Under damage, when pipeline pressure surpasses valve high pressure setting value, valve rod 4 is carried in the strut buckling ultimate load that load on elongate rod 7 is greater than elongate rod 7 under the effect of valve body inside and outside differential pressure, strut buckling occurs in elongate rod 7, its effective length can diminish moment, valve rod 4 moves up under the promotion of valve body 1 inside and outside differential pressure, and make flap 2 enter valve seat 3 and form sealing, thus throttle down.As shown in Figure 3.
Under damage, when pipeline pressure, during lower than valve low pressure setting value, the frictional force between elongate rod 7 upper ends and slide bar 11 is less than the spring-back force of 10 pairs of slide bars 11 of spring, and slide bar 11 slides to the right, and elongate rod 7, through the hole on slide bar 11, slips into pole cap 9 upper ends.Now valve rod 4 has lost the support force of elongate rod 7, under the promotion of inside and outside differential pressure, moves up, and make flap 2 enter valve seat 3 and form sealing, thus throttle down.As shown in Figure 4.
Resetting of depression bar flip-over type high-pressure and low-pressure emergency shutdown valve can be carried out as follows: (1) closes the valve of upstream line, the pressure of removal valve internal; (2) back out pole cap 9, reduction nut 12 is turned clockwise on earth, by spring 10 compressions; (3) valve rod 4 is pushed away downwards, satisfactory elongate rod 7 is installed, tighten pole cap 9; (4) check errorless after, open the upstream line valve; (5) reduction nut 12 is rotated counterclockwise to end, now depression bar flip-over type high-pressure and low-pressure emergency shutdown valve has just reset to normal working.As shown in Figure 5.
Disclosed all features in this specification, or the step in disclosed all methods or process, except the special type and/or step of mutual repulsion, all can combine by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing), unless special narration all can be replaced by other equivalence or the alternative features with similar purpose.That is,, unless special narration, each feature is an example in a series of equivalences or similar characteristics.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination disclosed in this manual, and the arbitrary new method disclosed or step or any new combination of process.
Claims (3)
1. a depression bar flip-over type high-pressure and low-pressure emergency shutdown valve, its critical piece comprises valve body (1), flap (2), valve seat (3), valve rod (4), block (5), valve gap (6), elongate rod (7), bar cage (8), pole cap (9), spring (10), slide bar (11) and reduction nut (12), it is characterized in that: triggered the shutoff of valve during higher than the high pressure setting value by the strut buckling of elongate rod (7) when pipeline pressure, in pipeline pressure shutoff that triggers valve that skids off by elongate rod (7) during lower than the low pressure setting value.
2. depression bar flip-over type high-pressure and low-pressure emergency shutdown valve according to claim 1, wherein when pipeline pressure surpasses valve high pressure setting value, under the effect of valve body inside and outside differential pressure, valve rod 4 is carried in the strut buckling ultimate load that load on elongate rod (7) is greater than elongate rod (7), strut buckling occurs in elongate rod (7), its effective length can diminish moment, valve rod (4) moves up under the promotion of valve body (1) inside and outside differential pressure, make flap (2) enter valve seat (3) and form sealing, thus throttle down.
3. depression bar flip-over type high-pressure and low-pressure emergency shutdown valve according to claim 1, wherein when pipeline pressure during lower than valve low pressure setting value, frictional force between elongate rod (7) upper end and slide bar (11) is less than the spring-back force of spring (10) to slide bar (11), slide bar (11) slides to the right, elongate rod (7) is through the hole on slide bar (11), slip into pole cap (9) upper end, now valve rod (4) has lost the support force of elongate rod (7), under the promotion of inside and outside differential pressure, move up, make flap (2) enter valve seat (3) and form sealing, thus throttle down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210189743.9A CN103486305B (en) | 2012-06-08 | 2012-06-08 | Depression bar flip-over type high-pressure and low-pressure emergency shutdown valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210189743.9A CN103486305B (en) | 2012-06-08 | 2012-06-08 | Depression bar flip-over type high-pressure and low-pressure emergency shutdown valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103486305A true CN103486305A (en) | 2014-01-01 |
| CN103486305B CN103486305B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210189743.9A Expired - Fee Related CN103486305B (en) | 2012-06-08 | 2012-06-08 | Depression bar flip-over type high-pressure and low-pressure emergency shutdown valve |
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| Country | Link |
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| CN (1) | CN103486305B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913090A (en) * | 2015-05-24 | 2015-09-16 | 徐州八方安全设备有限公司 | Low-pressure emptying type blasting needle valve |
| WO2015168558A1 (en) * | 2014-05-02 | 2015-11-05 | Goehler Dannie | Pressure release valve for oil recovery systems |
| CN105318052A (en) * | 2015-02-17 | 2016-02-10 | 刘海亮 | Low-pressure working condition compression bar destabilizing trigger type pressure relief device |
| CN105443815A (en) * | 2015-02-28 | 2016-03-30 | 江苏瑞朗博机械设备有限公司 | Membrane auxiliary compression bar buckling trigger type automatic valve |
| CN108692100A (en) * | 2018-05-22 | 2018-10-23 | 张文炳 | A kind of double-control valve of defective valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2255617A (en) * | 1991-05-06 | 1992-11-11 | Julian S Taylor | High pressure fluid emergency shutoff valve. |
| US5373864A (en) * | 1992-07-30 | 1994-12-20 | Taylor; Julian S. | Downstream low fluid pressure emergency shutoff valve |
| US6058961A (en) * | 1999-09-14 | 2000-05-09 | Taylor; Julian S. | High pressure relief valve |
| CN101263327A (en) * | 2005-09-09 | 2008-09-10 | Bs&B安全体系有限公司 | Pressure relief device |
| CN202691185U (en) * | 2012-06-08 | 2013-01-23 | 刘海亮 | Pressure rod trigger type high-pressure and low-pressure emergency shut-off valve |
-
2012
- 2012-06-08 CN CN201210189743.9A patent/CN103486305B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2255617A (en) * | 1991-05-06 | 1992-11-11 | Julian S Taylor | High pressure fluid emergency shutoff valve. |
| US5373864A (en) * | 1992-07-30 | 1994-12-20 | Taylor; Julian S. | Downstream low fluid pressure emergency shutoff valve |
| US6058961A (en) * | 1999-09-14 | 2000-05-09 | Taylor; Julian S. | High pressure relief valve |
| CN101263327A (en) * | 2005-09-09 | 2008-09-10 | Bs&B安全体系有限公司 | Pressure relief device |
| CN202691185U (en) * | 2012-06-08 | 2013-01-23 | 刘海亮 | Pressure rod trigger type high-pressure and low-pressure emergency shut-off valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015168558A1 (en) * | 2014-05-02 | 2015-11-05 | Goehler Dannie | Pressure release valve for oil recovery systems |
| CN106537009A (en) * | 2014-05-02 | 2017-03-22 | Bs和B创新有限公司 | Pressure release valve for oil recovery systems |
| US10451190B2 (en) | 2014-05-02 | 2019-10-22 | Bs&B Innovations Limited | Pressure release valve for oil recovery systems |
| CN105318052A (en) * | 2015-02-17 | 2016-02-10 | 刘海亮 | Low-pressure working condition compression bar destabilizing trigger type pressure relief device |
| CN105443815A (en) * | 2015-02-28 | 2016-03-30 | 江苏瑞朗博机械设备有限公司 | Membrane auxiliary compression bar buckling trigger type automatic valve |
| CN105443815B (en) * | 2015-02-28 | 2019-02-19 | 江苏瑞朗博机械设备有限公司 | The automatic valve of diaphragm assist type strut buckling triggering type |
| CN104913090A (en) * | 2015-05-24 | 2015-09-16 | 徐州八方安全设备有限公司 | Low-pressure emptying type blasting needle valve |
| CN108692100A (en) * | 2018-05-22 | 2018-10-23 | 张文炳 | A kind of double-control valve of defective valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103486305B (en) | 2016-09-07 |
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Effective date of registration: 20160512 Address after: 211316, No. 12 Tan Avenue, Gaochun Economic Development Zone, Nanjing, Jiangsu Applicant after: JIANGSU RELIABLE MACHINERY EQUIPMENT Co.,Ltd. Address before: 100076 Beijing city Daxing District Jiugong Town Hall Road No. 15 No. 23 building 3 unit 1101 Applicant before: Liu Hailiang Applicant before: Wang Lei Applicant before: Wang Fukai |
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Granted publication date: 20160907 |