CN201031695Y - Anti-theft enclosed sample valve - Google Patents
Anti-theft enclosed sample valve Download PDFInfo
- Publication number
- CN201031695Y CN201031695Y CNU2007200177045U CN200720017704U CN201031695Y CN 201031695 Y CN201031695 Y CN 201031695Y CN U2007200177045 U CNU2007200177045 U CN U2007200177045U CN 200720017704 U CN200720017704 U CN 200720017704U CN 201031695 Y CN201031695 Y CN 201031695Y
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- Prior art keywords
- valve
- valve core
- sliding valve
- sliding
- sampling
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- Expired - Fee Related
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Abstract
The utility model provides a theftproof closed sampling valve belonging to a device installed on oil production wellhead of oil field. A sliding valve core is installed in a screwed hole of the middle valve body. An oil discharge hole and a boss are arranged on the sliding valve core. The internal end of a valve stem on the sliding valve core is fixed on a resisting cap with an oil supply hole. The resisting cap is installed in another screwed hole on the sliding valve core. The external of the resisting cap and the valve stem of the sliding valve core is provided with a spring. A seal ring is arranged between the sliding valve core and the valve body. The external valve body is provided with a patchhole for install-discharge tools. The sampling valve only can be completed the process of assembly and disassembly by using the special tools and the sampling can not be completed unless using the special tools. The device has good theftproof performance, can avoid economic loss and environmental pollution caused by opened and discharged by lawbreakers. In addition to working as a sampling valve, the device can be used as a plug, having multiple functions, simple and reasonable structure and convenient operation.
Description
Technical field
The utility model provides the device on a kind of oil well mouth, especially a kind of sample valve.
Background technology
Sample valve all is installed on production wellhead, carries out analytical test and admission borehole pressure so that take out a small amount of crude oil.The sample valve that uses at present mostly is the spherical stop valve of model as DN15Pg16.This valve arrangement is simple, and is easy to operate, but theftproof performance is poor, easily opened or lay down by the undesirable to steal to put crude oil.This not only can cause economic loss, also easily forms large-area pollution.This valve relies on the contact of metal covering to seal, and poor sealing performance easily leaks.For preventing that being opened or lay down the robber by the undesirable puts crude oil, have to install theft-proof box or the wellhead sampling jam pot cover is dead additional at well head, carry out in the metering room when needing sampling.This not only causes cost of production to increase, and also can influence the accuracy of sampling.And can make very simple originally well head operations (as changing back-pressure valve doormat, adding packing etc.) become complicated.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of antitheft airtight sample valve, to improve its theftproof performance.
The utility model is to realize like this, antitheft airtight sample valve, it has valve body, in the screw at valve body middle part sliding valve core is installed, oil outlet and boss are arranged on the sliding valve core, the inner of the valve rod on the sliding valve core is fixed on the retaining cap of bringing oilhole into, the retaining cap is installed in another screw on the sliding valve core, there is spring valve rod outside between retaining cap and the sliding valve core, between sliding valve core and the valve body sealing ring is installed, and the mounting or dismounting tools patchhole is arranged on the valve body of outer end.
Adopt the sample valve of said structure, use specialist tools just can finish installation and removal, use special instrument just can finish during sampling, theftproof performance is good, avoided being opened and unload economic loss and the environment pollution that causes, in as sample valve, can be used as plug and use, had multiple function by the lawless person, simple and reasonable for structure, easy to use.
Description of drawings
Fig. 1 is the schematic diagram of the utility model structure.
Fig. 2 is the front view that is used for special-purpose mounting or dismounting tools of the present utility model.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the right view of Fig. 5.
Fig. 5 is used for the front view of sampling instrument of the present utility model.
The specific embodiment
Below in conjunction with description of drawings concrete structure of the present utility model and using method.
As shown in Figure 1, the antitheft airtight sample valve of the utility model, it has valve body (2), in the screw (11) at valve body middle part sliding valve core (5) is installed, oil outlet (3) and boss (10) are arranged on the sliding valve core, the inner of valve rod on the sliding valve core (7) is fixed on the retaining cap (9) of bringing oilhole (8) into, the retaining cap is installed in another screw (12) on the sliding valve core, there is spring (6) valve rod outside between retaining cap and the sliding valve core, sealing ring (4) is installed between sliding valve core and the valve body, mounting or dismounting tools patchhole (1) is arranged on the valve body of outer end.
Mounting or dismounting tools patchhole (1) can have more than three or three.
The quantity of the plug (16) on the special-purpose mounting or dismounting tools (14) is corresponding with mounting or dismounting tools patchhole (1) quantity and shape with shape.
When installation, dismounting, plug on the special-purpose mounting or dismounting tools (16) is inserted in the mounting or dismounting tools patchhole (1), then, the jack on this instrument (15) interpolation is gone into handle, rotates this instrument by handle and just can realize installation, the dismounting of the utility model on well head.
When needing sampling or admission borehole pressure data, with being screwed in the screw (11) on the valve body with externally threaded cylindrical shell (17) of the sampling instrument (18) of special use, sampling instrument heads on sliding valve core and moves inward.Oil outlet above spool moves to it (3) and body cavity (13) are when communicating, and the crude oil in the body cavity flows out through oil outlet (3), valve core cavity, sampling instrument inner chamber, finishes sampling.In the sampling process, the fuel feed hole (8) of crude oil on the retaining cap replenishes body cavity in the well.On sampling instrument, connect the pressure measurement instrument and can measure borehole pressure.
After sampling, admission pressure are finished, the special-purpose sampling instrument of back-outing, sliding valve core is got back to original position under the effect of spring and borehole pressure, and the oil outlet on the sliding valve core is positioned at the outside of sealing ring, and crude oil no longer flows out.Boss on the sliding valve core (10) plays positioning action.
Claims (1)
1. antitheft airtight sample valve, it is characterized in that, it has valve body (2), in the screw (11) at valve body middle part sliding valve core (5) is installed, oil outlet (3) and boss (10) are arranged on the sliding valve core, the inner of valve rod on the sliding valve core (7) is fixed on the retaining cap (9) of bringing oilhole (8) into, the retaining cap is installed in another screw (12) on the sliding valve core, there is spring (6) valve rod outside between retaining cap and the sliding valve core, sealing ring (4) is installed between sliding valve core and the valve body, mounting or dismounting tools patchhole (1) is arranged on the valve body of outer end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200177045U CN201031695Y (en) | 2007-01-20 | 2007-01-20 | Anti-theft enclosed sample valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200177045U CN201031695Y (en) | 2007-01-20 | 2007-01-20 | Anti-theft enclosed sample valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201031695Y true CN201031695Y (en) | 2008-03-05 |
Family
ID=39163587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200177045U Expired - Fee Related CN201031695Y (en) | 2007-01-20 | 2007-01-20 | Anti-theft enclosed sample valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201031695Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534159A (en) * | 2014-12-30 | 2015-04-22 | 深圳市安博自控能源技术有限公司 | Valve disassembly-preventing mechanism and valve |
| CN110306949A (en) * | 2019-07-01 | 2019-10-08 | 中国石油化工股份有限公司 | Well-mouth theft-prevention sampler |
| CN111397974A (en) * | 2019-01-02 | 2020-07-10 | 中国石油天然气股份有限公司 | Sampling protection device and system |
| CN112443293A (en) * | 2020-12-20 | 2021-03-05 | 董迎考 | Multifunctional oil well wellhead backflow prevention device |
| CN113309516A (en) * | 2020-02-26 | 2021-08-27 | 中国石油天然气股份有限公司 | Downhole sampling apparatus and method |
-
2007
- 2007-01-20 CN CNU2007200177045U patent/CN201031695Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534159A (en) * | 2014-12-30 | 2015-04-22 | 深圳市安博自控能源技术有限公司 | Valve disassembly-preventing mechanism and valve |
| CN104534159B (en) * | 2014-12-30 | 2017-01-11 | 金向峰 | Valve disassembly-preventing mechanism and valve |
| CN111397974A (en) * | 2019-01-02 | 2020-07-10 | 中国石油天然气股份有限公司 | Sampling protection device and system |
| CN111397974B (en) * | 2019-01-02 | 2023-03-24 | 中国石油天然气股份有限公司 | Sampling protection device and system |
| CN110306949A (en) * | 2019-07-01 | 2019-10-08 | 中国石油化工股份有限公司 | Well-mouth theft-prevention sampler |
| CN113309516A (en) * | 2020-02-26 | 2021-08-27 | 中国石油天然气股份有限公司 | Downhole sampling apparatus and method |
| CN112443293A (en) * | 2020-12-20 | 2021-03-05 | 董迎考 | Multifunctional oil well wellhead backflow prevention device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080305 |