CN202300282U - Protective ring for fastening bolt of oil extraction tree - Google Patents
Protective ring for fastening bolt of oil extraction tree Download PDFInfo
- Publication number
- CN202300282U CN202300282U CN2011203917654U CN201120391765U CN202300282U CN 202300282 U CN202300282 U CN 202300282U CN 2011203917654 U CN2011203917654 U CN 2011203917654U CN 201120391765 U CN201120391765 U CN 201120391765U CN 202300282 U CN202300282 U CN 202300282U
- Authority
- CN
- China
- Prior art keywords
- protective ring
- guard ring
- fastening bolt
- hole
- lock
- 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
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Abstract
The utility model relates to a protective ring for a fastening bolt of an oil extraction tree, which belongs to the technical field of protective devices for mouths of oil wells or water wells and gates in oil fields. The protective ring consists of a protective ring body and a lock unit, the protective ring body is formed by two semi-circular protective ring units with lugs which are connected through a rotary shaft, the lugs of the two protective ring units are crossed to form a lock hole of the lock unit, an inner thread is arranged in the lock hole of the protective ring body, and a lock pin is connected with the inner thread in the lock hole of the protective ring body and inserted into the lock hole. A flange fastening bolt of a well mouth or a gate is covered with the protective ring which can be unlocked by a special key only, and accordingly damages to devices at the mouths of the wells of the oil extraction tree by law breakers are effectively avoided and loss of the oil fields is reduced.
Description
Technical field:
The utility model relates to Christmas tree big four joint and gate fastening bolt protective cover, belongs to oil field oil, well well head and gate protector technical field.
Background technology:
At present, because oily, well mouth operation in the open air for a long time, part undesirable dismantles theft in order to seek interests to well head bolt and gate, has influenced the water injection well and the rod-pumped well ordinary production in oil field.
The patent No. is that 200520021026.0 patent discloses a kind of wellhead flange alarm it is outside bolt head, to be with lower jacket; Nut overcoat has upper jacket; Be covered with the protective cover that covers nut mutually in the groove of upper end in the upper jacket; Because the bolt of wellhead flange is more, its installation and unlatching are very loaded down with trivial details.
Summary of the invention:
The purpose of the utility model is to subject to undesirable's destruction in order to overcome oil field shaft mouth of the prior art, influences the defective that oilfield safety is produced, and a kind of production tree fastening bolt guard ring that prevents artificial destruction is provided.
The utility model is made up of guard ring and lock body; Guard ring is two semicircular body that have earrings; Connect by rotating shaft; The earrings of two guard rings intersects to form the lockhole of lock body each other, in the lockhole of guard ring, is provided with internal thread, and the internal thread on lock pin and the guard ring in the lockhole is connected and is plugged on lockhole.
The top of the lock body of said guard ring is the boss that is provided with central through hole, and its central through hole is provided with internal thread, and the protection plug is installed in the central through hole of boss through screw thread.
Have draw-in groove on the protection plug sidewall; The side of boss has pin-and-hole, and the interior installation pin of pin-and-hole also is connected in the draw-in groove on the protection plug sidewall.
The lock pin upper end is a triangle boss.
Can well head or gate secure bolt be covered in the guard ring through the utility model, have only through the key of special use and just can guard ring be opened, effectively avoid the destruction of lawless person, reduce the oil field loss production tree well head device.
Description of drawings:
Fig. 1 is the utility model structural representation.
The specific embodiment:
Can know by Fig. 1; The utility model is made up of guard ring 1 and lock body 3; Guard ring 1 is two semicircular body that have earrings, is connected by rotating shaft 8, and the earrings of two guard rings 1 intersects to form the lockhole 2 of lock body 3 each other; In the lockhole of guard ring 1, be provided with internal thread 7, the internal thread 7 on lock pin 5 and the guard ring 1 in the lockhole is connected and is plugged on lockhole 2.
The top of the lock body 3 of described guard ring 1 is the boss 4 that is provided with central through hole, and its central through hole is provided with internal thread, and protection plug 6 is installed in the central through hole of boss 4 through screw thread.
Have draw-in groove on described protection plug 6 sidewalls; The side of boss 4 has pin-and-hole, and the interior installation pin of pin-and-hole also is connected in the draw-in groove on protection plug 6 sidewalls, can limit the rotation of protection plug 6.
Described lock pin 5 upper ends are triangle boss, have only through triangle key in special-purpose just to make its rotation insert or withdraw from lockhole 2.
Claims (4)
1. production tree fastening bolt guard ring; Form by guard ring (1) and lock body (3); It is characterized in that: guard ring (1) is two semicircular body that have earrings, is connected by rotating shaft (8), and the earrings of two guard rings (1) intersects to form the lockhole (2) of lock body (3) each other; In the lockhole of guard ring (1), be provided with internal thread (7), the internal thread (7) in lock pin (5) and last guard ring (1) lockhole is connected and is plugged on lockhole (2).
2. production tree fastening bolt guard ring according to claim 1; It is characterized in that: the top of the lock body (3) of guard ring (1) is the boss (4) that is provided with central through hole; Its central through hole is provided with internal thread, and protection plug (6) is installed in the central through hole of boss (4) through screw thread.
3. production tree fastening bolt guard ring according to claim 1 and 2 is characterized in that: have draw-in groove on protection plug (6) sidewall; The side of boss (4) has pin-and-hole, and the interior installation pin of pin-and-hole also is connected in the draw-in groove on protection plug (6) sidewall.
4. production tree fastening bolt guard ring according to claim 1 and 2 is characterized in that: lock pin (5) upper end is a triangle boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203917654U CN202300282U (en) | 2011-10-15 | 2011-10-15 | Protective ring for fastening bolt of oil extraction tree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203917654U CN202300282U (en) | 2011-10-15 | 2011-10-15 | Protective ring for fastening bolt of oil extraction tree |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300282U true CN202300282U (en) | 2012-07-04 |
Family
ID=46369204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203917654U Expired - Fee Related CN202300282U (en) | 2011-10-15 | 2011-10-15 | Protective ring for fastening bolt of oil extraction tree |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300282U (en) |
-
2011
- 2011-10-15 CN CN2011203917654U patent/CN202300282U/en not_active Expired - Fee Related
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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: 20120704 Termination date: 20141015 |
|
| EXPY | Termination of patent right or utility model |