CN202000960U - Subsurface safety valve - Google Patents
Subsurface safety valve Download PDFInfo
- Publication number
- CN202000960U CN202000960U CN2011200358121U CN201120035812U CN202000960U CN 202000960 U CN202000960 U CN 202000960U CN 2011200358121 U CN2011200358121 U CN 2011200358121U CN 201120035812 U CN201120035812 U CN 201120035812U CN 202000960 U CN202000960 U CN 202000960U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve plate
- butterfly valve
- equalizing
- cylinder body
- 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.)
- Expired - Lifetime
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- Lift Valve (AREA)
- Fluid-Driven Valves (AREA)
- Safety Valves (AREA)
Abstract
The utility model relates to a subsurface safety valve which comprises a cylinder body, wherein the two ends of the cylinder body are connected with an oil pipe through an upper adapter and a lower adapter, a valve base is arranged at the internal lower end of the cylinder body, a balancing valve is arranged at the upper part of the valve base, a butterfly valve plate is arranged at the lower part of the valve base, a rotating shaft is pivoted on one side of the butterfly valve plate, and a protrusion is arranged at the upper end of the other side of the butterfly valve plate, which is opposite to the rotating shaft. The utility model has the benefits as follows: the protrusion is arranged on the maximum force arm side of the valve plate, which is away from the rotating shaft, so that when the valve plate is pushed by a piston, the thrust force of the piston acts on the protrusion of the valve plate at the initial stage to rotate the valve plate in the position of maximum force arm; and when the difference of the pressure on the two sides of the valve plate is completely eliminated after valve plate is opened a certain angle, the point where the thrust force of the piston acts on the valve plate is changed to the side close to the rotating shaft. Therefore, not only is the requirement for thrust force of the piston reduced but also the rotating shaft of the valve plate is not liable to be damaged. The subsurface safety valve provided by the utility model can not only reduce the command pressure, but also greatly improve the operating reliability and the service life.
Description
[technical field]
The utility model relates to a kind of completion tool, refers in particular to a kind of storm valve.
[background technology]
The storm valve that extensively adopts is the butterfly valve structure by Ground Control voltage supply system drive at present, and the process that safety valve is opened is that voltage supply system drive piston overcomes spring force, promotes butterfly valve plate and opens the safety-valve, and there is following problem in this type of safety valve:
When 1, this external piston promotes butterfly valve plate, the stress point of butterfly valve plate is the minimum arm of force position near its axis of rotation one side, especially when the pressure of butterfly valve plate both sides has little time abundant balance, it is very big to open the required power of butterfly valve plate, this has not only improved the requirement to the voltage supply system, and under impact so energetically, very easily the gyroaxis to butterfly valve plate causes damage.
2, because the process of whole valve open at first is that voltage supply system drive piston overcomes spring force, open equalizing valve and pressurize a period of time, make the pressure of butterfly valve both sides approaching, continue the pressure-driven piston of increasing voltage supply system again and push butterfly valve open.The storm valve of this kind structure requires to open the pressure of pressurize a period of time balance butterfly valve both sides behind the equalizing valve, yet often ground is difficult to the time point that definite equalizing valve is opened, need certain dwell time to make the control of voltage supply system complicated in addition, therefore in actual use, the required working time of equalizing valve is often ignored on ground, but continuation strengthens the pressure of voltage supply system, opens butterfly valve by force, and one comes the functional reliability and the life-span of safety valve have been brought tremendous influence thus.
[summary of the invention]
The purpose of this utility model is to have overcome above-mentioned defective, and a kind of storm valve that can effectively protect the butterfly valve plate gyroaxis and need not to wait for the piston dead time is provided.
The purpose of this utility model is achieved in that a kind of storm valve, it comprises cylinder body, the cylinder body two ends connect oil pipe by top connection, lower contact respectively, the lower end is provided with valve seat in the cylinder body, valve seat top is provided with equalizing valve, the bottom is provided with butterfly valve plate, and butterfly valve plate one side is articulated with axis of rotation, and its improvements are: described butterfly valve plate is provided with boss in the opposite side upper end that articulates axis of rotation;
In the said structure, described boss is arranged at the maximum side of the arm of force of butterfly valve plate;
In the said structure, described equalizing valve is not less than 10mm in the butterfly valve plate spacing;
In the said structure, described equalizing valve bore is not less than 8mm;
Described equalizing valve comprises two at least, and a plurality of equalizing valves are set in distance;
In the above-mentioned structure, described equalizing valve comprises at least one;
Described equalizing valve comprises two at least, and a plurality of equalizing valves are set in distance.
Than common storm valve, the beneficial effects of the utility model are to arrange boss at valve plate away from the maximum side of the arm of force of gyroaxis, make piston promote its thrust of starting stage of valve plate on the boss of valve plate, promoting valve plate in the maximum arm of force position rotates, when valve plate is opened certain angle, when the valve plate both sides did not have pressure differential fully, piston was changed near gyroaxis one side the application point of valve plate thrust again.This has not only reduced the requirement to piston thrust, also is difficult for damaging the gyroaxis of valve plate.The storm valve that the utility model proposes has not only reduced controlled pressure, has also improved the functional reliability and the life-span of safety valve simultaneously greatly.
[description of drawings]
Below in conjunction with accompanying drawing in detail concrete structure of the present utility model is described in detail
Fig. 1 is an overall structure sectional view of the present utility model
Fig. 2 is an A part partial enlarged drawing among Fig. 1
[specific embodiment]
Below in conjunction with accompanying drawing the utility model specific embodiment is described in detail.
As shown in Figure 1, 2, the utility model relates to a kind of storm valve, its basic structure is to existing similar, top connection 1 is connected with oil pipe respectively with lower contact 3, connects cylinder body 2 therebetween, arranges piston 4 in the cylinder body 2 and realizes sealing by last black box 6 and lower seal assembly 7, be furnished with spring 5 between cylinder body 2 and the piston 4, the lower end of cylinder body 2 is furnished with the butterfly valve assembly, and the butterfly valve assembly includes valve seat 11, butterfly valve plate 12, axis of rotation 13 and goes up the spring 14 of socket, which is provided with equalizing valve 9.One side of butterfly valve plate 12 is articulated with axis of rotation 13 and is socketed with spring 14, different with tradition is, by at the opposite side of butterfly valve plate 12 away from gyroaxis 13, best is that boss 121 is arranged in the maximum side of butterfly valve plate 12 upper arms upper end, thereby its thrust of starting stage that makes piston 4 promotion butterfly valve plates 12 promotes butterfly valve plate 12 and rotates on the boss 121 of butterfly valve plate 12 in the maximum arm of force position.When butterfly valve plate 12 is opened certain angle, when its both sides did not have pressure differential fully, the application point of 4 pairs of butterfly valve plate 12 thrusts of piston was changed near axis of rotation 13 1 sides again.This has not only reduced the requirement to piston 4 thrusts, also is difficult for damaging the axis of rotation 13 of valve plate.
The problem of pause waiting at piston in addition, the utility model proposes by having strengthened the space D between butterfly valve plate 12 and the equalizing valve 9, make its spacing D be not less than 10mm, make piston 4 after opening equalizing valve 9, normally move to the balance of finishing butterfly valve plate 12 pressure at both sides in time period of butterfly valve plate 12 thus, effectively avoided because of waiting for 4 dead times of piston that equalizing valve 9 work are required.
Further, if think stiffening effect, can take following means:
1, strengthen equalizing valve 9 bores, equalizing valve 9 bores after strengthening usually are not less than 8mm;
2, equalizing valve is splitted into a plurality of, a plurality of equalizing valves 9 are set in distance.
Above-mentioned two kinds of means can be respectively or group and the scheme with increasing equalizing valve 9 and butterfly valve plate 12 be used, and then reach the purpose of avoiding the dead time.
It is to be noted; the utility model is not limited to above-mentioned embodiment; any simple modification, equivalent variations and modification that any those skilled in the art do the foregoing description in based on technical solutions of the utility model all belong in the protection domain of the present utility model.
Claims (7)
1. storm valve, it comprises cylinder body, the cylinder body two ends connect oil pipe by top connection, lower contact respectively, the lower end is provided with valve seat in the cylinder body, valve seat top is provided with equalizing valve, the bottom is provided with butterfly valve plate, and butterfly valve plate one side is articulated with axis of rotation, it is characterized in that: described butterfly valve plate is provided with boss in the opposite side upper end that articulates axis of rotation.
2. storm valve as claimed in claim 1 is characterized in that: described boss is arranged at the maximum side of the arm of force of butterfly valve plate.
3. storm valve as claimed in claim 1 is characterized in that: described equalizing valve is not less than 10mm in the butterfly valve plate spacing.
4. as claim 1 or 3 described storm valves, it is characterized in that: described equalizing valve bore is not less than 8mm.
5. storm valve as claimed in claim 4 is characterized in that: described equalizing valve comprises two at least, and a plurality of equalizing valves are set in distance.
6. as claim 1 or 3 described storm valves, it is characterized in that: described equalizing valve comprises at least one.
7. storm valve as claimed in claim 6 is characterized in that: described equalizing valve comprises two at least, and a plurality of equalizing valves are set in distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200358121U CN202000960U (en) | 2011-02-10 | 2011-02-10 | Subsurface safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200358121U CN202000960U (en) | 2011-02-10 | 2011-02-10 | Subsurface safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202000960U true CN202000960U (en) | 2011-10-05 |
Family
ID=44703705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200358121U Expired - Lifetime CN202000960U (en) | 2011-02-10 | 2011-02-10 | Subsurface safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202000960U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321015A (en) * | 2016-08-18 | 2017-01-11 | 中国石油天然气股份有限公司 | Downhole switching device |
| CN107476781A (en) * | 2016-06-07 | 2017-12-15 | 中国石油大学(华东) | All-hydraulic control storm valve |
| CN109083618A (en) * | 2018-08-01 | 2018-12-25 | 东营市福利德石油科技开发有限责任公司 | Deep-well binary channels safety valve |
-
2011
- 2011-02-10 CN CN2011200358121U patent/CN202000960U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476781A (en) * | 2016-06-07 | 2017-12-15 | 中国石油大学(华东) | All-hydraulic control storm valve |
| CN106321015A (en) * | 2016-08-18 | 2017-01-11 | 中国石油天然气股份有限公司 | Downhole switching device |
| CN109083618A (en) * | 2018-08-01 | 2018-12-25 | 东营市福利德石油科技开发有限责任公司 | Deep-well binary channels safety 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: SHENZHEN FLUID SCIENCE + TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HE JIANHUI Effective date: 20120521 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120521 Address after: 518000, West Coast Building, Nanshan District commercial culture center, Shenzhen, Guangdong, 2010 Patentee after: Shenzhen Fluid Science & Technology Co., Ltd. Address before: 518000, West Coast Building, Nanshan District commercial culture center, Shenzhen, Guangdong, 2010 Patentee before: He Jianhui |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000, West Coast Building, Nanshan District commercial culture center, Shenzhen, Guangdong, 2010 Patentee after: Shenzhen, Dorset, Polytron Technologies Inc Address before: 518000, West Coast Building, Nanshan District commercial culture center, Shenzhen, Guangdong, 2010 Patentee before: Shenzhen Fluid Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |