CN109185513A - A kind of novel pneumatic diaphragm type safety valve and its method - Google Patents
A kind of novel pneumatic diaphragm type safety valve and its method Download PDFInfo
- Publication number
- CN109185513A CN109185513A CN201811447775.8A CN201811447775A CN109185513A CN 109185513 A CN109185513 A CN 109185513A CN 201811447775 A CN201811447775 A CN 201811447775A CN 109185513 A CN109185513 A CN 109185513A
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- Prior art keywords
- valve
- bar
- safety valve
- spring
- novel pneumatic
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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
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The present invention discloses a kind of novel pneumatic diaphragm type safety valve and its method, when safety valve needs valve opening state, a mouthful input air pressure is suppressed from upper cover, thrust is generated on diaphragm to generate thrust on thrust disc, thrust disc will drive down only bar and together with valve rod, valve plate movement, spring is compressed, until lower only bar offsets with pressure cap, reaches safety valve fully open position；When safety valve needs to reach closed state, chamber pressure release is suppressed in sealing, and the bounce of compressed spring is applied on spring stop and lower only bar at this time, is pushed valve rod, valve plate, thrust disc and diaphragm mobile, is closed safety valve entirely.Safety valve of the invention needs in valve latus rectum standard-sized sheet and closes specific two positions entirely, and when valve opening stablizes pressure supply, closes the direct pressure release of valve；It is not required to electric feedback element and also varies without control signal, structure is simple, and easy for installation, easy to maintain, efficiency improves, low in cost；Stem position when can also can adjust pressure supply according to lower only bar is different from the screw-in of valve rod distance.
Description
Technical field
The present invention relates to oil exploration equipment field, in particular to a kind of novel pneumatic diaphragm type safety valve and its method.
Background technique
Currently, safety valve is mostly installed on production tree or manifold, when work, the safe valve actuator moment keeps shape with pressure
State makes valve keep standard-sized sheet.The pressure source of driver comes from well site control system, once generation down-hole pressure increases extremely and is more than
When safety valve setting pressure, toucher meeting releasing pressure automatically, valve rod drives valve plate to generate displacement, closes safety valve rapidly, to protect
Demonstrate,prove the safety of pipeline, equipment and the person.
For conventional security valve, through frequently with piston actuator, due to the reasons in structure of piston-cylinder, piston type is safe
Valve is with high costs, and installation and maintenance process are complicated, and pass valve speed is slow, brings many inconvenience to scene use.Although existing
The regulating valve of the flow by changing inlet and outlet is disclosed in technology, when use needs to input different pressure and by electrical fixed
Position device, control signal change the position of valve rod, and thin film driver structure is relatively easy, and only push rod connects top and the bottom, positioning
Precision is not high.
For these reasons, it needs to propose that one kind meets cost requirement, installation and maintenance criterion and security requirement, and ties
Structure letter and the higher novel pneumatic diaphragm type safety valve of positioning accuracy are actually necessary.
Summary of the invention
The purpose of the present invention is to provide a kind of novel pneumatic diaphragm type safety valve and its method, safety valve is needed in valve
Latus rectum standard-sized sheet and close specific two positions entirely, when valve opening stablizes pressure supply, closes the direct pressure release of valve, and does not need setting electricity
Gas feedback element also haves no need to change control signal, due to being provided with down only bar part, according to the screw-in of lower only bar and valve rod away from
The position of valve rod, structure are simple, easy to maintain, low in cost when can adjust pressure supply from difference.
In order to achieve the above object, the present invention provides a kind of novel pneumatic diaphragm type safety valve, include:
Valve arrangement, it includes valve plate, valve rod and valve decks；The valve rod is connect with the valve plate, is provided on the valve deck
Pressure cap and terminal pad；
Thin film driver is connect by the terminal pad with the valve arrangement；The thin film driver includes:
Stop bar down, is threadedly coupled with the valve rod, it is different from the screw-in of valve rod distance by lower only bar, with adjustment
The position of valve rod when pressure supply；
It can be used as the upper cover of air pressure input port；
Lower cover is arranged in terminal pad；
Diaphragm, outer ring are fixed between the upper cover and the lower cover, and the sealing of safety valve is formed with the upper cover
Suppress chamber；
The thrust disc that thrust can be generated when chamber is suppressed is suppressed in sealing, is connect with the diaphragm and is stopped bar phase down with described
It supports；
Spring is arranged in the terminal pad；The spring is connect with the lower only bar, and in company with the fortune of the lower only bar
It moves and compresses or stop bar movement under driving when its rebound；
It is described lower when only bar and the pressure cap offset when the sealing is suppressed chamber and suppressed, reach safety valve standard-sized sheet position；With/
It is let out or, suppressing chamber when the sealing, the bounce of compressed spring acts on the lower only bar, band ovable valve stem, valve plate, thrust
Disk, diaphragm are reset to valve position.
Preferably, the pressure cap and/or the terminal pad are arranged at the top of the valve deck.
Preferably, the top of the valve rod is screwed with the lower only bar by screw thread.
Preferably, the diaphragm is linked into an integrated entity with the thrust disc by a cock.
Preferably, the outer ring of the diaphragm is clipped between the lower cover and the upper cover and is consolidated by bolt and nut
It is fixed.
Preferably, it is provided on the upper lid and suppresses mouth for input air pressure.
Preferably, the lower cover is bolted to connection in the terminal pad.
Preferably, the spring upper end is compressed by a spring stop and a upper cap nut, and the upper cap nut is spun on described time only
On bar, so that spring can be in company with movement when stopping bar movement instantly.
Preferably, it offsets respectively with the spring stop and the lower only bar on the downside of the thrust disc.
The present invention also provides a kind of switch valve work sides using novel pneumatic diaphragm type safety valve as described above
Method, this method include following procedure:
It when safety valve needs valve opening state, further includes: suppressing a mouthful input air pressure from upper cover, generated on diaphragm
Thrust accordingly to generate thrust on thrust disc, and the promotion of the thrust disc will drive down only bar and together with valve rod, valve plate
Mobile, spring is compressed, until lower only bar offsets with pressure cap, is reached safety valve fully open position, is continued pressure supply and keep valve opening state；
And/or when safety valve needs to reach closed state, further include: chamber pressure release is suppressed in sealing, compresses bullet at this time
The bounce of spring is applied to down on only bar, pushes valve rod, valve plate, thrust disc and diaphragm mobile, safety valve is made to reach full off state.
Compared with prior art, the invention has the benefit that (1) safety valve of the invention is needed in valve latus rectum standard-sized sheet
With close specific two positions entirely, when valve opening, stablizes pressure supply, closes the direct pressure release of valve；(2) it is electrical not need setting by the present invention
Feedback element also haves no need to change control letter, and structure is simple, easy for installation, easy to maintain, and production and maintenance efficiency improve, cost
It is cheap；(3) present invention is provided with down only bar part, when can adjust pressure supply apart from difference according to the lower only screw-in of bar and valve rod
The position of valve rod；(4) thin film driver frictional resistance of the invention is smaller, is quick on the draw, and is promoted so that closing valve speed.
Detailed description of the invention
Air bladder formula safety valve structure schematic diagram Fig. 1 of the invention；
Thin film driver structural schematic diagram Fig. 2 of the invention.
Wherein, 1. valve plate；2. valve rod；3. valve deck；4. pressure cap；5. thin film driver；6. terminal pad；7. lower only bar；On 8.
Nut；9. spring；10. lower cover；11. spring stop；12. thrust disc；13. upper cover；14. diaphragm；15. cock；16. suppressing mouth；
20. close valve state；30. valve opening state.
Specific embodiment
In order to keep the present invention more obvious and easy to understand, the present invention is done furtherly below in conjunction with the drawings and specific embodiments
It is bright.
As shown in Fig. 1 and Fig. 2 combination, air bladder formula safety valve of the invention includes valve portion and thin film driver 5, valve
Part includes valve plate 1, valve rod 2 and valve deck 3.Wherein, valve rod 2 is threaded to together with valve plate 1.It is provided with pressure cap 4 at the top of valve deck 3 and connects
Disk 6 is connect, the terminal pad 6 is for connecting valve portion and thin film driver 5.
Thin film driver 5 includes lower only bar 7, diaphragm 14, thrust disc 12, cock 15, spring 9, spring stop 11, upper cover 13
With lower cover 10.
Wherein, the screw top of valve rod 2 is screwed with down only bar 7, when only bar 7 moves instantly, together with valve rod 2 and valve plate 1
Movement.The present invention can be different from the screw-in of valve rod 2 distance according to lower only bar 7, so that it may the position of valve rod 2 when adjusting pressure supply.
Diaphragm 14 and thrust disc 12 are linked into an integrated entity by the installation of cock 15, at the same the outer ring of diaphragm 14 be clipped in lower cover 10 with it is upper
It is fixed between lid 13 and by bolt and nut, chamber is suppressed in the sealing of diaphragm 14 and the formation safety valve of upper cover 13.The present embodiment
In, 12 downside of thrust disc offsets with spring stop 11 and lower only bar 7 respectively.
The setting of lower cover 10 is fixed in terminal pad 6, and through bolt.Spring 9 is also disposed in terminal pad 6, spring 9
Upper end compressed by spring stop 11 and upper cap nut 8, and upper cap nut 8 is spun on down only on bar 7, then stop instantly bar 7 it is mobile when, spring
9 also can and then compression, rebound.
When sealing on the upside of safety valve is suppressed chamber and suppressed, down thrust is generated on diaphragm 14, drives thrust disc 12
Stop bar 7 down, valve rod 2, valve plate 1 move to reach valve opening position, and compressed spring 9, when only bar 7 and pressure cap 4 offset instantly, valve at this time
The position of bar 2 and valve plate 1 makes arranged at safety valve in valve opening state 30.
When chamber pressure release is suppressed in sealing on the upside of safety valve, the bounce of compressed spring 9 can act on spring stop at this time
11 and lower only on bar 7, valve rod 2, valve plate 1, thrust disc 12, diaphragm 14 can be made to reset, reach valve position.
The present invention provides a kind of valve opening of air bladder formula safety valve and valve method is closed, specific as follows:
When safety valve needs valve opening state 30: suppress 16 input air pressure of mouth from upper cover 13, generated on diaphragm 14 to
Lower thrust under the promotion of thrust disc 12, drives lower only bar 7 and together with valve so that also generating down thrust on thrust disc 12
Bar 2, valve plate 1 move down, and spring 9 is compressed, until lower only bar 7 offsets with pressure cap 4, reach safety valve fully open position, continue
Pressure supply keeps valve opening state.
When safety valve needs to reach closed state 20: chamber pressure release is suppressed in sealing, at this time the bounce effect of compressed spring 9
Onto spring stop 11 and lower only bar 7, pushes valve rod 2, valve plate 1, thrust disc 12 and diaphragm 14 to move up, keep safety valve complete
It closes.
In conclusion safety valve of the invention needs in valve latus rectum standard-sized sheet and closes specific two positions entirely, when valve opening, is steady
Determine pressure supply, close the direct pressure release of valve, and do not need setting electric feedback element and also have no need to change control signal, the present invention is also
It is provided with down only bar part, the position of valve rod when can adjust pressure supply according to lower only bar is different from the screw-in distance of valve rod.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a kind of novel pneumatic diaphragm type safety valve, characterized by comprising:
Valve arrangement, it includes valve plate (1), valve rod (2) and valve decks (3)；The valve rod (2) connect with the valve plate (1), the valve
Pressure cap (4) and terminal pad (6) are provided on lid (3)；
Thin film driver (5) is connect by the terminal pad (6) with the valve arrangement；The thin film driver (5) includes:
Down only bar (7), it is threadedly coupled with the valve rod (2), by the screw-in of lower only bar (7) and valve rod (2) apart from not
The position of valve rod (2) when together, to adjust pressure supply；
It can be used as the upper cover (13) of air pressure input port；
Lower cover (10) is arranged on terminal pad (6)；
Diaphragm (14), outer ring are fixed between the upper cover (13) and the lower cover (10), and are formed with the upper cover (13)
Chamber is suppressed in the sealing of safety valve；
The thrust disc (12) that thrust can be generated when chamber is suppressed is suppressed in sealing, is connect with the diaphragm (14) and is stopped bar down with described
(7) it offsets；
Spring (9) is arranged on the terminal pad (6)；The spring (9) connect with lower only bar (7), and in company under described
Only the movement of bar (7) and compress or drive when its rebound lower only bar (7) movement；
It is described lower when only bar (7) and the pressure cap (4) offset when the sealing is suppressed chamber and suppressed, reach safety valve standard-sized sheet position；
And/or suppress chamber when the sealing and let out, the bounce of compressed spring (9) acts on lower only bar (7), band ovable valve stem
(2), valve plate (1), thrust disc (12), diaphragm (14) are reset to valve position.
2. novel pneumatic diaphragm type safety valve as described in claim 1, which is characterized in that
The pressure cap (4) and/or the terminal pad (6) setting are at the top of the valve deck (3).
3. novel pneumatic diaphragm type safety valve as described in claim 1, which is characterized in that
The top of the valve rod (2) is screwed with described time only bar (7) by screw thread.
4. novel pneumatic diaphragm type safety valve as described in claim 1, which is characterized in that
The diaphragm (14) is linked into an integrated entity with the thrust disc (12) by a cock (15).
5. novel pneumatic diaphragm type safety valve as described in claim 1, which is characterized in that
The outer ring of the diaphragm (14) is clipped between the lower cover (10) and the upper cover (13) and is consolidated by bolt and nut
It is fixed.
6. novel pneumatic diaphragm type safety valve as claimed in claim 1 or 5, which is characterized in that be arranged on the upper cover (13)
Have and suppresses mouth (16) for input air pressure.
7. the novel pneumatic diaphragm type safety valve as described in claims 1 or 2 or 5, which is characterized in that the lower cover (10) passes through
Bolt is fixedly connected on the terminal pad (6).
8. novel pneumatic diaphragm type safety valve as described in claim 1, which is characterized in that
Spring (9) upper end is compressed by a spring stop (11) and a upper cap nut (8), the upper cap nut (8) be spun on it is described under
Only on bar (7), so that spring (9) can be in company with movement when only bar (7) move instantly.
9. novel pneumatic diaphragm type safety valve as claimed in claim 8, which is characterized in that
It offsets respectively with the spring stop (11) and lower only bar (7) on the downside of the thrust disc (12).
10. a kind of switch valve work side using novel pneumatic diaphragm type safety valve as described in any one of claims 1-9
Method, which is characterized in that this method includes following procedure:
It when safety valve needs valve opening state, further includes: mouth (16) input air pressure is suppressed from upper cover (13), in diaphragm
(14) it generates thrust on accordingly to generate thrust on thrust disc (12), the promotion of the thrust disc (12) will drive down only
Bar (7) is simultaneously mobile together with valve rod (2), valve plate (1), and spring (9) is compressed, until lower only bar (7) offset with pressure cap (4), reaches
Safety valve fully open position continues pressure supply and keeps valve opening state；
And/or when safety valve needs to reach closed state, further include: chamber pressure release is suppressed in sealing, at this time compressed spring
(9) bounce is applied to down on only bar (7), is pushed valve rod (2), valve plate (1), thrust disc (12) and diaphragm (14) mobile, is made
Safety valve reaches full off state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811447775.8A CN109185513A (en) | 2018-11-29 | 2018-11-29 | A kind of novel pneumatic diaphragm type safety valve and its method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811447775.8A CN109185513A (en) | 2018-11-29 | 2018-11-29 | A kind of novel pneumatic diaphragm type safety valve and its method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109185513A true CN109185513A (en) | 2019-01-11 |
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ID=64938446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811447775.8A Pending CN109185513A (en) | 2018-11-29 | 2018-11-29 | A kind of novel pneumatic diaphragm type safety valve and its method |
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| Country | Link |
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| CN (1) | CN109185513A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2101711A (en) * | 1981-07-17 | 1983-01-19 | Us Industries Inc | Fire-safe valve actuator |
| GB2118329A (en) * | 1982-04-08 | 1983-10-26 | Leonard William Lamburn | Improved pneumatically assisted relief or safety valve |
| CN202900158U (en) * | 2012-11-12 | 2013-04-24 | 江苏金加钻采设备有限公司 | Diaphragm-type air pressure driver |
| CN103148261A (en) * | 2013-03-28 | 2013-06-12 | 纽威石油设备（苏州）有限公司 | Pneumatic diaphragm driving device for flat gate valve |
| CN203835332U (en) * | 2014-04-22 | 2014-09-17 | 江苏金加钻采设备有限公司 | Pneumatic fracturing valve |
| CN205745581U (en) * | 2016-06-30 | 2016-11-30 | 纽威石油设备（苏州）有限公司 | A kind of pneumatic diaphragm executor and relief valve |
| CN209294488U (en) * | 2018-11-29 | 2019-08-23 | 美钻深海能源科技研发（上海）有限公司 | A kind of novel pneumatic diaphragm type safety valve |
-
2018
- 2018-11-29 CN CN201811447775.8A patent/CN109185513A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2101711A (en) * | 1981-07-17 | 1983-01-19 | Us Industries Inc | Fire-safe valve actuator |
| GB2118329A (en) * | 1982-04-08 | 1983-10-26 | Leonard William Lamburn | Improved pneumatically assisted relief or safety valve |
| CN202900158U (en) * | 2012-11-12 | 2013-04-24 | 江苏金加钻采设备有限公司 | Diaphragm-type air pressure driver |
| CN103148261A (en) * | 2013-03-28 | 2013-06-12 | 纽威石油设备（苏州）有限公司 | Pneumatic diaphragm driving device for flat gate valve |
| CN203835332U (en) * | 2014-04-22 | 2014-09-17 | 江苏金加钻采设备有限公司 | Pneumatic fracturing valve |
| CN205745581U (en) * | 2016-06-30 | 2016-11-30 | 纽威石油设备（苏州）有限公司 | A kind of pneumatic diaphragm executor and relief valve |
| CN209294488U (en) * | 2018-11-29 | 2019-08-23 | 美钻深海能源科技研发（上海）有限公司 | A kind of novel pneumatic diaphragm type safety valve |
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