CN2849136Y - Antitheft well head cap capable of discharging oil gas and its special spanner - Google Patents
Antitheft well head cap capable of discharging oil gas and its special spanner Download PDFInfo
- Publication number
- CN2849136Y CN2849136Y CN 200520021757 CN200520021757U CN2849136Y CN 2849136 Y CN2849136 Y CN 2849136Y CN 200520021757 CN200520021757 CN 200520021757 CN 200520021757 U CN200520021757 U CN 200520021757U CN 2849136 Y CN2849136 Y CN 2849136Y
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- utility
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- cap
- oil gas
- special spanner
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Abstract
The utility model relates to an anti-theft well opening cap capable of discharging oil gas and a special spanner thereof, particularly a well opening anti-theft protection device of a bailing oil exploitation well. The purpose of the utility model is to solve the problem that the existing anti-theft well opening cap is not provided with an oil gas discharge opening. The utility model is realized by the following proposals that a concentric rotary structure is adopted by a well opening cap, a top cover assembly (2) can freely rotate, and a cap body (1) is provided with an outer thread, and can be screwed in a casing pipe of a well opening. The special spanner of the utility model is composed of a conical head screw (3), a nut (4) and a clamping claw sleeve (5). A working principle of an expansion bolt is used by the utility model. Due to the fact that an inner hole of the utility model is a through hole, and the inner hole has no special force application point, and the anti-theft performance, the anti-prizing performance and the anti-blocking performance of the utility model are greatly enhanced. Oil gas exuded from the interior of an oil well can be discharged from the inner hole of the well opening cap, the accident occurrence caused due to the too high pressure in the oil well is avoided and the utility model can also be safely and reliably used in winter. The special spanner is difficult to measure and imitate, and the regular production of the special spanner can be ensured.
Description
Technical field
The utility model relates to a kind of bailing producing well well head theft-preventing protecting device.
Background technology
It is at the normal a kind of oil production method that adopts of the last oil recovery stage of oil well that bailing is recovered the oil, it is a kind of method of fully excavating oil well residue produce oil potentiality, because the bailing well above ground portion has only sleeve opening and wellhead cap, well head is antitheft, anti-damage ability is poor, often suffers that artificial malice steals the crude oil that overflows.Though existing Pithead preventing thieves cap has anti-theft feature, it is not provided with the oil gas outlet opening, because oil gas constantly oozes out, the oil well OIH atmospheric pressure that does not carry out operation for a long time is higher, occurs accident when opening wellhead cap easily; Particularly in the winter time, the moisture in the oil gas freezes together wellhead cap and well head, can only destructive wellhead cap be taken off, and has not only delayed the operation cost that normal oil recovery also will be paid great number.
The utility model content
The utility model is not provided with the problem of oil gas outlet opening for solving existing Pithead preventing thieves cap, and then a kind of Pithead preventing thieves cap and special spanner thereof of discharging oil gas is provided.The utility model is achieved by following proposal, and a kind of Pithead preventing thieves cap of discharging oil gas comprises the cap body, and the cap body has external screw thread, and the endoporus of cap body is up big and down small stairstepping through hole, and the middle part of top endoporus is installed with ring baffle; It also comprises top cover assembly, and top cover assembly is made up of top cover, standpipe and catch, and standpipe passes the endoporus of ring baffle, and top cover is fixedlyed connected with the upper and lower end of standpipe respectively with catch, and catch places in the top endoporus of cap body.The special spanner of Pithead preventing thieves cap is made up of conehead screw rod, nut and catch jacket, the threaded portion at conehead screw rod middle part is connected with nut thread, the bottom of conehead screw rod is installed with up-small and down-big conical head, the outside on catch jacket top is installed with boss, the bottom of catch jacket is installed with elastic card claw, and catch jacket is enclosed within the conical head outside of conehead screw rod bottom.The utility model is simple to operation, need only the endoporus of the bottom of special spanner being inserted wellhead cap during use, make the elastic card claw of catch jacket bottom be in the bottom endoporus of wellhead cap, tighten the nut on the special spanner, along with moving on the conical head, elastic card claw in the wellhead cap endoporus distending and with the swelling of wellhead cap endoporus, be rotated counterclockwise the conehead screw rod and just can unclamp wellhead cap, just can carry out oil extraction operation; After the bailing construction wellhead cap is screwed into well head, the nut on the spanner is unclamped, can take off spanner.Top cover assembly of the present utility model can rotate freely, because endoporus is that through hole does not have special origin of force, all improves a lot on antitheft, anti-sledge, anti-blocking property; The oil gas that oozes out in the oil well can be discharged from the endoporus of wellhead cap, avoid that the too high accident that causes of oil-air pressure takes place in the oil well, in the winter time also can be safely, use reliably; This special spanner is difficult to measure imitated, can guarantee ordinary production.
Description of drawings
Fig. 1 is a structural representation of discharging the Pithead preventing thieves cap of oil gas described in the utility model, and Fig. 2 is the structural representation of special spanner, and Fig. 3 is the A-A sectional view of the boss 5-1 on the catch jacket 5.
The specific embodiment
The specific embodiment one: (referring to Fig. 1-Fig. 2) present embodiment is made up of cap body 1 and top cover assembly 2, cap body 1 has external screw thread, and the endoporus of cap body 1 is up big and down small stairstepping through hole, and the middle part of top endoporus 1-1 is installed with ring baffle 1-2; Top cover assembly 2 is made up of top cover 2-1, standpipe 2-2 and catch 2-3, and standpipe 2-2 passes the endoporus 1-2-1 of ring baffle 1-2, and top cover 2-1 is fixedlyed connected with the upper and lower end of standpipe 2-2 respectively with catch 2-3, and catch 2-3 places in the top endoporus 1-1 of cap body 1.The utility model special spanner is made up of conehead screw rod 3, nut 4 and catch jacket 5, the threaded portion at conehead screw rod 3 middle parts is threaded with nut 4, the bottom of conehead screw rod 3 is installed with up-small and down-big conical head 3-1, the outside on catch jacket 5 tops is installed with boss 5-1, the bottom of catch jacket 5 is installed with elastic card claw 5-2, and catch jacket 5 is enclosed within the conical head 3-1 outside of conehead screw rod 3 bottoms.
The specific embodiment two: (difference referring to the present embodiment of Fig. 1-Fig. 2) and the specific embodiment one is that elastic card claw 5-2 is four and is uniformly distributed along the circumference on the described catch jacket 5.Other composition and annexation and
The specific embodiment one is identical.
The specific embodiment three: (difference referring to the present embodiment of Fig. 1-Fig. 2) and the specific embodiment one is that the cross section of the boss 5-1 on the described catch jacket 5 is a hexagon, and the upper end of described conehead screw rod 3 is installed with spanner 3-2.Other composition is identical with the specific embodiment one with annexation.The cross section of present embodiment boss 5-1 is a hexagon, and during nut 4 on tightening special spanner, the available standards spanner clamps boss 5-1, and the setting of spanner 3-2 also makes operability of the present utility model strengthen greatly.
Claims (5)
1, a kind of Pithead preventing thieves cap of discharging oil gas comprises cap body (1), and cap body (1) has external screw thread, and the endoporus that it is characterized in that cap body (1) is up big and down small stairstepping through hole, and the middle part of top endoporus (1-1) is installed with ring baffle (1-2); Top cover assembly (2) is made up of top cover (2-1), standpipe (2-2) and catch (2-3), standpipe (2-2) passes the endoporus (1-2-1) of ring baffle (1-2), top cover (2-1) is fixedlyed connected with the upper and lower end of standpipe (2-2) respectively with catch (2-3), and catch (2-3) places in the top endoporus (1-1) of cap body (1).
2, a kind of special spanner of discharging the Pithead preventing thieves cap of oil gas, it is characterized in that it is made up of conehead screw rod (3), nut (4) and catch jacket (5), the threaded portion at conehead screw rod (3) middle part is threaded with nut (4), the bottom of conehead screw rod (3) is installed with up-small and down-big conical head (3-1), the outside on catch jacket (5) top is installed with boss (5-1), the bottom of catch jacket (5) is installed with elastic card claw (5-2), and catch jacket (5) is enclosed within conical head (3-1) outside of conehead screw rod (3) bottom.
3, a kind of special spanner of discharging the Pithead preventing thieves cap of oil gas according to claim 2 is characterized in that the last elastic card claw (5-2) of described catch jacket (5) is four and is uniformly distributed along the circumference.
4, a kind of special spanner of discharging the Pithead preventing thieves cap of oil gas according to claim 2 is characterized in that the cross section of the boss (5-1) on the described catch jacket (5) is a hexagon.
5, a kind of special spanner of discharging the Pithead preventing thieves cap of oil gas according to claim 2 is characterized in that the upper end of described conehead screw rod (3) is installed with spanner (3-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021757 CN2849136Y (en) | 2005-10-14 | 2005-10-14 | Antitheft well head cap capable of discharging oil gas and its special spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021757 CN2849136Y (en) | 2005-10-14 | 2005-10-14 | Antitheft well head cap capable of discharging oil gas and its special spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2849136Y true CN2849136Y (en) | 2006-12-20 |
Family
ID=37521620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520021757 Expired - Fee Related CN2849136Y (en) | 2005-10-14 | 2005-10-14 | Antitheft well head cap capable of discharging oil gas and its special spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2849136Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653140A (en) * | 2015-03-11 | 2015-05-27 | 大庆金祥寓科技有限公司 | Wellhead anti-theft device |
-
2005
- 2005-10-14 CN CN 200520021757 patent/CN2849136Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653140A (en) * | 2015-03-11 | 2015-05-27 | 大庆金祥寓科技有限公司 | Wellhead anti-theft device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061220 Termination date: 20141014 |
|
| EXPY | Termination of patent right or utility model |