CN201943656U - Anti-theft air-release valve - Google Patents
Anti-theft air-release valve Download PDFInfo
- Publication number
- CN201943656U CN201943656U CN2011200479681U CN201120047968U CN201943656U CN 201943656 U CN201943656 U CN 201943656U CN 2011200479681 U CN2011200479681 U CN 2011200479681U CN 201120047968 U CN201120047968 U CN 201120047968U CN 201943656 U CN201943656 U CN 201943656U
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- release valve
- plug
- boss
- 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 - Fee Related
Links
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Safety Valves (AREA)
Abstract
The utility model relates to an anti-theft air-release valve, mainly solving the problems of oil-gas leakage, easiness in stealing and bad tightness caused by the existing air-release valve. The anti-theft air-release valve is characterized in that the matched part of the middle part of a screwed plug (1) and a valve body (2) is cylindrical, a boss is arranged at the outer side of the lower part, the boss is arranged in the valve body (2). The anti-theft air-release valve has advantages of good tightness, good anti-leakage performance and good anti-theft function.
Description
Technical field
The utility model relates to the device on the oil-field oil pumper well head, a kind of specifically antitheft vent valve.
Background technology
On the oil field for the balance borehole pressure, on the oil pumper well head, need to use vent valve, but there is following shortcoming in present employed sleeve pipe vent valve: 1, be prone in adjusting the casing pressure process and collapse phenomenon, cause oil gas to reveal, casualty accident appears in serious meeting; 2, Pian Yuandiqu oil well, vent valve is often removed by the lawless person, and it is logical to cause oil jacket to scurry on ground, influences rate when effective; 3, because the vent valve plug adopts up big and down small tapered design, cause under the lower situation of level pressure value, can not effectively seal, cause leakage.
Summary of the invention
Cause easily in order to overcome existing vent valve that oil gas is revealed, the easy deficiency of stolen, sealing difference, the utility model provides a kind of antitheft vent valve, and this antitheft vent valve has good airproof performance, be difficult for revealing, antitheft characteristics.
The technical solution of the utility model is: a kind of antitheft vent valve, and comprise spring that valve body, plug and its underpart connect, block, the plug middle part is cylindrical with the valve body cooperation place, and there is a boss in the outside, bottom, and described boss places valve inner.
The difference of described valve inner height and spring free length and the diameter of blocking is a positive number.
The utlity model has following beneficial effect: owing to take such scheme, the plug middle part is cylindrical with the valve body cooperation place, has changed conical design in the past, makes to prevent from better tightness to reveal; Boss is arranged at the plug bottom, and boss is stuck on the step of valve body, prevents that plug from being dismantled by top, avoids plug to collapse and to hurt sb.'s feelings, and has also avoided oil gas stolen.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
1-plug among the figure, the 2-valve body, the 3-spring, 4-blocks, the 5-valve seat.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, a kind of antitheft vent valve, comprise valve body 2, plug 1, plug 1 middle part is cylindrical, the outside, bottom has a boss, described boss to place valve body 2 inside, is stuck on the step of valve body 2 inside, plug 1 bottom connects spring 3 successively, blocks 4, and block 4 external diameter and the hole on the valve seat 5 match.The difference of described valve body 2 internal height H and spring 3 drifts and 4 diameters of blocking is a positive number, be valve body 2 internal height greater than spring 3 and 4 diameters of blocking and, can guarantee like this when casing pressure is higher, block and 4 under no spring pressure, work, enlarge the scope of adjusting pressure.When this antitheft vent valve is installed, opposite with the vent valve of present application, install from valve body 2 bottoms, earlier plug 1 is passed by valve body 2 inside, then mounting spring 3, block 4, with valve seat 5 and valve body 2 welding, final valve valve seat 5 is welded on the well head, so again, under the situation of not destroying vent valve, can't simultaneously, also avoid occurring security incident by outside stolen.
Claims (2)
1. antitheft vent valve, comprise spring (3), block (4) that valve body (2), plug (1) and its underpart connect, it is characterized in that: plug (1) middle part is cylindrical with valve body (2) cooperation place, and the outside, bottom has a boss, described boss to place valve body (2) inside.
2. antitheft vent valve according to claim 1 is characterized in that: the difference of described valve body (2) internal height and spring (3) drift and (4) diameter of blocking is a positive number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200479681U CN201943656U (en) | 2011-02-25 | 2011-02-25 | Anti-theft air-release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200479681U CN201943656U (en) | 2011-02-25 | 2011-02-25 | Anti-theft air-release valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201943656U true CN201943656U (en) | 2011-08-24 |
Family
ID=44471005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200479681U Expired - Fee Related CN201943656U (en) | 2011-02-25 | 2011-02-25 | Anti-theft air-release valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201943656U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277068A (en) * | 2013-05-21 | 2013-09-04 | 新疆力信油田工程技术有限公司 | Oil well casing pipe exhaust valve |
| CN110235942A (en) * | 2019-07-23 | 2019-09-17 | 杭州芯意智能科技有限公司 | A kind of Yoghourt processing agitating device |
-
2011
- 2011-02-25 CN CN2011200479681U patent/CN201943656U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277068A (en) * | 2013-05-21 | 2013-09-04 | 新疆力信油田工程技术有限公司 | Oil well casing pipe exhaust valve |
| CN110235942A (en) * | 2019-07-23 | 2019-09-17 | 杭州芯意智能科技有限公司 | A kind of Yoghourt processing agitating device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201943656U (en) | Anti-theft air-release valve | |
| CN203308443U (en) | Circulating gas injection pipe column | |
| CN102536183A (en) | Underground gas injection pipe column | |
| CN203756112U (en) | Well washing balance packer | |
| CN203394418U (en) | Manual type rapid plugging device and socket spanner thereof | |
| CN203383783U (en) | Closed-type bottom reversing switch | |
| CN202520284U (en) | Gravel Pack Backwash Valve | |
| CN204782852U (en) | Anti - well washing device is pressed in crowded water injection mud area | |
| CN201460799U (en) | Concentric integrated water-plugging finding pipe column | |
| CN201344009Y (en) | Anti-theft controllable well plugging device | |
| CN203822278U (en) | Casing patch well separated layer water injection device | |
| CN101839117A (en) | Annulus safety valve | |
| CN202417414U (en) | Double-lock blanking plug for blowout prevention of oil pipe | |
| CN104653140A (en) | Wellhead anti-theft device | |
| CN201992110U (en) | Antitheft sampling valve | |
| CN100441830C (en) | Releasing gadget sealing insertion head gas-injection tube pile | |
| CN208184707U (en) | A kind of piston restriction formula ball-and-seat | |
| CN201354594Y (en) | Buoyancy burglar-proof oil pipe pup joint | |
| CN204252899U (en) | Casing shaping device and bidirectional constant-pressure relief valve | |
| CN203614072U (en) | Anti-theft device for wellhead valve of oil field | |
| CN204252898U (en) | Hydraulic power device | |
| CN205277368U (en) | Multi -functional oil pipe float collar | |
| CN202520277U (en) | Casing check valve | |
| CN202832373U (en) | Oil well well-cleaning port anti-theft device | |
| CN202954784U (en) | Slag prevention check valve for water injection well |
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: 20110824 Termination date: 20120225 |