CN202812335U - Novel low-pressure triggering pressure lever instability shut-off valve - Google Patents
Novel low-pressure triggering pressure lever instability shut-off valve Download PDFInfo
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- CN202812335U CN202812335U CN 201220274957 CN201220274957U CN202812335U CN 202812335 U CN202812335 U CN 202812335U CN 201220274957 CN201220274957 CN 201220274957 CN 201220274957 U CN201220274957 U CN 201220274957U CN 202812335 U CN202812335 U CN 202812335U
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Abstract
The utility model relates to a novel low-pressure triggering pressure lever instability shut-off valve which comprises the following main components: a valve body, a valve seat, a valve clack, a rotating shaft, a valve clack catch, a valve cover, a valve rod, a spring, a piston, an air cylinder, a slender rod, a rod cage, a rod cap, a reset spring, a reset strut and the like, wherein the slender rod is a triggering component for shutting off a valve, and is designed according to the principle of pressure lever instability. When the pressure in a pipeline is higher than the specified point, a supporting force born by the slender rod is lower than the pressure lever instability critical load, the pressure lever is kept stable, the valve clack catch is clamped at the lower end of the valve rod, and the valve is kept to be in the open state. When the pressure in the pipeline is lower than the specified point, the axial load born by the slender rod exceeds the pressure lever instability critical load, the pressure lever is unstable, the effective length of the pressure lever is instantaneously reduced, and at the moment, the valve clack catch is separated from the lower end of the valve rod, the valve clack rotates around the rotating shaft under the action of gravity, and the valve is closed under the push of fluid. The valve is simple in structure, is only provided with three moving components, and has higher reliability.
Description
Technical field
The utility model relates to the New Low Voltage flip-over type strut buckling shut-off valve that is used for ensureing station equipment or gas pipeline safety and protection in the Gas Exploitation And Transmission well site.
Background technique
The low pressure flip-over type well head safe shut-off valve of control rock gas output is installed on ground, Gas Exploitation And Transmission well site.This is that rock gas can be discharged in the atmosphere in this case, has both polluted atmosphere because of downstream line, valve or the inefficacy of equipment or the reduction that fracture can cause pipeline pressure, has again the hidden danger that causes fire and blast and economic loss.The effect of this safety shut-off valves is to close natural gas path when loine pressure drops to certain value, thereby reduces the leakage of rock gas, alleviates pollution of atmosphere, reduces disaster hidden-trouble and economic loss.
Most well head safe shut-off valve is comprised of shut-off valve and hydraulic control system two-part.Generally each functional part of hydraulic control system is independent installation the respectively, adopts pipeline to be connected between parts and the parts.So, the connecting tube line length between each parts, the situation that jointing is many have just been caused, so that potential leakage point showed increased.In addition, the moving element of traditional shut-off valve itself is also more.These factors all can cause the reliability decrease of whole shut-off valve system.
The model utility content
The purpose of this utility model provides a kind of New Low Voltage flip-over type strut buckling shut-off valve.This shut-off valve has been used for reference the structure of Swing check valve, and it turn-offs trigger mechanism according to the strut buckling principle design, turn-offs the precision height, and the valve circulation area can realize full-bore, and has saved the hydraulic control system of traditional similar valve.Simultaneously, valve itself simple in structure only has three moving elements, has higher reliability.
The technical solution of the utility model is as follows:
A kind of New Low Voltage flip-over type strut buckling shut-off valve, its critical piece comprise valve body, valve seat, flap, rotating shaft, flap catch, valve gap, valve rod, spring, piston, cylinder, elongate rod, bar cage, pole cap, bolt and the pole that resets reset.It is characterized in that: the parts whether the control shut-off valve turn-offs are elongate rod and spring, by the strut buckling triggering valve shutoff of elongate rod.The Placement of critical piece is: the upper end of valve rod is connected with elongate rod, valve rod passes cylinder, piston, spring and valve gap and enters in the valve body, valve rod has center hole, and valve body and cylinder are communicated with, and the pressure of valve inner medium can enter by the center hole of valve rod the inner chamber of cylinder.The working principle of valve is described below: valve rod is subject to the acting in conjunction of three power, is respectively the support force of elongate rod, the pressure of piston and the thrust of spring.Wherein the direction of the pressure of the support force of elongate rod and piston is downwards, the direction of the thrust of spring upwards, these three equilibrium of forces and unbalance be the factor that triggers valve open and close.When manifold pressure was higher than specified point, the support force that elongate rod is born was lower than its strut buckling ultimate load, and it is stable that depression bar keeps.The thrust that these two downward power of the support force of elongate rod and the pressure of piston and spring make progress reaches balance, and the catch on the flap is stuck in the lower end of valve rod, and valve stays open state.And valve can realize full-bore when opening, and flow resistance is little, is easy to realize the cleaning of pipeline and valve.When the pressure in the pipeline began to descend, the pressure of piston also can descend thereupon, and spring force is constant, so the support force of elongate rod can increase along with the decline of pressure.When the pressure in the pipeline was brought down below specified point, the thrust load that elongate rod is born surpassed its strut buckling ultimate load, depression bar generation unstability, and its effective length can reduce moment.This moment, valve rod can move up under the thrust of spring, thereby the catch of flap breaks away from from the lower end of valve rod, flap under action of gravitation around its rotating shaft rotation, and under the promotion of fluid throttle down.
Elongate rod is the trigger component of New Low Voltage flip-over type strut buckling shut-off valve, and whether itself can be lower than specified point by the perception pipeline pressure, thereby and unstability occurs when loine pressure is lower than specified point triggers closing of valve.Elongate rod and spring have replaced the hydraulic control system of the complexity used in the present well mouth release valve in function.
The beneficial effects of the utility model are as follows:
1. New Low Voltage flip-over type strut buckling shut-off valve adopts elongate rod as trigger component, and the unstability of elongate rod is followed Euler's formula, the utlity model has higher triggering precision;
2. New Low Voltage flip-over type strut buckling shut-off valve has been used for reference the structure of Swing check valve, can realize full-bore, flow resistance is little and realizes easily the cleaning of pipeline and valve;
3. New Low Voltage flip-over type strut buckling shut-off valve is simple in structure, only has three moving elements---valve rod, flap and spring, and motion credibility and sealing reliability are higher;
4. the reseting procedure after New Low Voltage flip-over type strut buckling shut-off valve triggers is the Renewal process of elongate rod namely, and whole process operation is simple, and the time is short, and need not special tool(s), and is simple.
Description of drawings
The main structure of the New Low Voltage flip-over type strut buckling shut-off valve that accompanying drawing 1 relates to for the utility model;
The schematic representation that the New Low Voltage flip-over type strut buckling shut-off valve that accompanying drawing 2 relates to for the utility model is worked when pressure is higher than specified point;
The New Low Voltage flip-over type strut buckling shut-off valve that accompanying drawing 3 relates to for the utility model is lower than specified point at pressure and triggers schematic representation when turn-offing;
The schematic representation of the New Low Voltage flip-over type strut buckling shut-off valve reseting procedure that accompanying drawing 4 relates to for the utility model.
Embodiment
A kind of New Low Voltage flip-over type strut buckling shut-off valve, its critical piece comprise valve body 1, valve seat 2, flap 3, rotating shaft 4, flap catch 5, valve gap 6, valve rod 7, spring 8, piston 9, cylinder 10, elongate rod 11, bar cage 12, pole cap 13, bolt 14 and the pole 15 that resets reset.As shown in Figure 1.Wherein elongate rod 11 and spring 8 are trigger components of New Low Voltage flip-over type strut buckling shut-off valve.
Embodiment of the present utility model is: the upper end of valve rod 7 is connected with elongate rod 11, and valve rod 7 passes cylinder 10, piston 9, spring 8 and valve gap 6 and enters in the valve body 1.Valve rod 7 has center hole, and valve body 1 and cylinder 10 are communicated with, and the pressure of valve body 1 interior media can enter by the center hole of valve rod 7 inner chamber of cylinder 10, and then piston 9 is formed a downward active force.
When manifold pressure is higher than specified point, the support force that elongate rod 11 is born is lower than its strut buckling ultimate load, it is stable that depression bar keeps, the thrust that these two downward power of the pressure that the support force of elongate rod 11 and piston 9 are subject to and spring 8 make progress reaches balance, flap catch 5 rests on the lower end of valve rod 7 at this moment, flap 3 is hanged, and medium can pass through valve by full-bore.As shown in Figure 2.
When the pressure in the pipeline began to descend, the downward pressure that piston 9 is subject to also can descend thereupon.And the power of spring 8 is constant, so the support force of elongate rod 11 can increase along with the decline of pressure.When the pressure in the pipeline was brought down below specified point, the thrust load that elongate rod 11 is born surpassed its strut buckling ultimate load, depression bar generation unstability, and its effective length can reduce moment.This moment, valve rod 7 meetings move up under the thrust of spring 8, and valve rod 7 breaks away from flap catch 5, makes flap 3 lose support, caused flap 3 around the shaft 4 motions, simultaneously Shuttoff Valve under the promotion of fluid under action of gravitation.As shown in Figure 3.
New Low Voltage flip-over type strut buckling shut-off valve can reset as follows: (1) closes the valve of upstream line, the pressure of removal valve body 1 inside; (2) back out pole cap 13, take off the elongate rod 11 of unstability; (3) bolt 14 that resets is installed, when turning clockwise, hand rotation rotating shaft 4 is hanged flap 3; (4) be enough to install when resetting pole 15 when the distance between bar cage 12 and the valve rod 7, the bolt 14 that resets that stops the rotation, and the pole 15 that will reset is in place; (5) be rotated counterclockwise the bolt 14 that resets until with its taking-up; (6) open the upstream line valve, make valve body 1 inner chamber pressurising; (7) new elongate rod is installed, and is screwed into pole cap 13; (8) after pole cap 13 withstands elongate rod 11, continue again to twist two circles, take out the pole 15 that resets; (9) tighten at last pole cap 13, this moment, New Low Voltage flip-over type strut buckling shut-off valve just reset to normal working.As shown in Figure 4.
Disclosed all features in this specification, or the step in disclosed all methods or the process except the special type and/or step of mutual repulsion, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is 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 the similar characteristics.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (4)
1. New Low Voltage flip-over type strut buckling shut-off valve, its critical piece comprises valve body (1), valve seat (2), flap (3), rotating shaft (4), flap catch (5), valve gap (6), valve rod (7), spring (8), piston (9), cylinder (10), elongate rod (11), bar cage (12), pole cap (13), bolt (14) and the pole that resets (15) reset, it is characterized in that: the parts whether the control shut-off valve turn-offs are elongate rod (11) and spring (8), by the strut buckling triggering valve shutoff of elongate rod (11).The Placement of critical piece is: the upper end of valve rod (7) is connected with elongate rod (11), valve rod (7) passes cylinder (10), piston (9), spring (8) and valve gap (6) and enters in the valve body (1), valve rod (7) has center hole, valve body (1) and cylinder (10) are communicated with, and the pressure of valve body (1) interior media can enter by the center hole of valve rod (7) inner chamber of cylinder (10).
2. New Low Voltage flip-over type strut buckling shut-off valve according to claim 1, wherein the upper end of valve rod (7) is connected with elongate rod (11), and valve rod (7) passes cylinder (10), piston (9), spring (8) and valve gap (6) and enters in the valve body (1).
3. New Low Voltage flip-over type strut buckling shut-off valve according to claim 1, wherein there is center hole at valve rod (7) center, valve body (1) and cylinder (10) are communicated with, the pressure of valve body (1) interior media can enter by the center hole of valve rod (7) inner chamber of cylinder (10), makes the interior pressure of valve body (1) and cylinder (10) identical.
4. New Low Voltage flip-over type strut buckling shut-off valve according to claim 1, wherein the motion of flap (3) is rotatablely moving of (4) around the shaft, unlatching or shutoff that this rotatablely moves and has realized valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220274957 CN202812335U (en) | 2012-06-08 | 2012-06-08 | Novel low-pressure triggering pressure lever instability shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220274957 CN202812335U (en) | 2012-06-08 | 2012-06-08 | Novel low-pressure triggering pressure lever instability shut-off valve |
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| Publication Number | Publication Date |
|---|---|
| CN202812335U true CN202812335U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220274957 Expired - Lifetime CN202812335U (en) | 2012-06-08 | 2012-06-08 | Novel low-pressure triggering pressure lever instability shut-off valve |
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| CN (1) | CN202812335U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-06-08 CN CN 201220274957 patent/CN202812335U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU RUILANGBO MACHINERY EQUIPMENT CO., LTD. Free format text: FORMER OWNER: LIU HAILIANG Effective date: 20140723 Free format text: FORMER OWNER: WANG LEI WANG FUKAI Effective date: 20140723 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100076 DAXING, BEIJING TO: 210000 NANJING, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140723 Address after: 210000, No. 12 Tan Avenue, Gaochun Economic Development Zone, Nanjing, Jiangsu Patentee after: JIANGSU RUILANGBO MECHANICAL EQUIPMENT CO., LTD. Address before: 100076 Beijing city Daxing District Jiugong Town Hall Road No. 15 No. 23 building 3 unit 1101 Patentee before: Liu Hailiang Patentee before: Wang Lei Patentee before: Wang Fukai |
|
| DD01 | Delivery of document by public notice |
Addressee: Liu Hailiang Document name: Notification of Passing Examination on Formalities |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |