CN201810252U - Christmas tree stuffing box protective covers - Google Patents
Christmas tree stuffing box protective covers Download PDFInfo
- Publication number
- CN201810252U CN201810252U CN2010202960313U CN201020296031U CN201810252U CN 201810252 U CN201810252 U CN 201810252U CN 2010202960313 U CN2010202960313 U CN 2010202960313U CN 201020296031 U CN201020296031 U CN 201020296031U CN 201810252 U CN201810252 U CN 201810252U
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- CN
- China
- Prior art keywords
- hole
- lock
- protective cover
- protective covers
- screw rod
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- Expired - Fee Related
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Abstract
The utility model relates to Christmas tree stuffing box protective covers which belong to the technical field of wellhead protection devices of oil pumping units in oil fields, and comprise protective covers and a lock body; the protective covers are two semi-circle bodies with earrings, which are connected by a rotating shaft; the earrings of the two protective covers are mutually crossed to form the upper lock hole and the lower lock hole of the lock body; the central part of the upper end surface of each protective cover is provided with a through hole for a polished rod to pass through, and the lower end surface of the protective cover is provided with the through hole which is bigger than the three-way outer diameter of a wellhead; the lock body is provided with a hollow hole, a lock lever is arranged in the hollow hole, and the lower part of the hollow hole is provided with a thread and a screw rod; the middle part of the lock lever is a T-shaped body, the T-shaped body is arranged between the upper lock hole and the lower lock hole, the lock lever moves up and down and is inserted into the upper lock hole or the lower lock hole by setting the rotating rounds of the screw rod so as to lock a stuffing box in the protective covers; and because the rounds of the screw rod is set by the manufacturer and non-operators do not know the rounds, lawbreakers are prevented from opening the protective covers, damaging the wellhead device and stealing oil, and the safe production of the oil fields is ensured.
Description
Technical field
The utility model relates to a kind of production tree packing box protective cover, belongs to oilfield pumping well mouth protecting device technical field.
Background technology
At present, because rod-pumped well is operation in the open air for a long time, the lawless person is released to well head packing box pressing cap, crude oil is flowed out from the packing gap, the phenomenon of stealing crude oil takes place often, for preventing to destroy, the patent No. is 200820220840.9 to disclose the rotating antitheft packing box of a kind of list, and this antitheft packing box is by the packing box pipe nipple, the packing Glan, packing box pressure cap and packing box guard shield are formed, wherein, the top of packing box guard shield is fixed with the shutoff with uniform embedding tooth, adapter sleeve is equipped with in the lower end, and on well head, the lawless person can take off the packing box guard shield by knockout screw to adapter sleeve by screw, destroy packing box and carry out stolen, influence oilfield safety production.
Summary of the invention
The purpose of this utility model is to subject to lawless person's destruction in order to overcome oil field shaft mouth packing box of the prior art, influences the defective that oilfield safety is produced, and a kind of production tree packing box protective cover that prevents artificial destruction is provided.
The utility model is made up of protective cover and lock body, protective cover is two semicircular body that have earrings, connect by rotating shaft, the earrings of two protective covers intersects to form the last lockhole and the following lockhole of lock body mutually, the centre has the through hole that can pass polished rod on the protective cover upper surface, has the through hole greater than well head threeway external diameter on the lower surface; Have hollow hole on the lock body, locking bar is installed in the hollow hole, the bottom of hollow hole is provided with screw thread and screw rod is installed; The middle part of locking bar is " T " font body, should be positioned between lockhole and the following lockhole by " T " font body.
The utility model can be set the rotation number of turns of screw rod, and locking bar is moved up and down, and inserts and go up in lockhole or the following lockhole, and packing box is locked in the protective cover.Because the screw rod number of turns is set by manufacturer, the not operation personnel can't learn, prevent that effectively the lawless person from opening the generation that protective cover destroys wellhead assembly stolen phenomenon, guarantees oilfield safety production.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model vertical view.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
By Fig. 1 and Fig. 2 as can be known, the utility model is made up of protective cover 3 and lock body 4, protective cover 3 is two semicircular body that have earrings, connect by rotating shaft 1, the earrings of two protective covers 3 intersects to form the last lockhole 7 and the following lockhole 8 of lock body 4 mutually, the centre has the through hole that can pass polished rod on protective cover 3 upper surfaces, has the through hole 9 greater than well head threeway external diameter on the lower surface; Have hollow hole on the lock body 4, locking bar 5 is installed in the hollow hole, the bottom of hollow hole is provided with screw thread and screw rod 6 is installed; The middle part of locking bar 5 is " T " font body, should be positioned between lockhole 7 and the following lockhole 8 by " T " font body, set the rotation number of turns and the rotating screw bolt 6 of screw rod 6, locking bar 5 is moved up and down, its " T " font body is inserted respectively in lockhole 7 or the following lockhole 8, packing box is locked in the protective cover 3.Because screw rod 6 rotates the number of turns and set by manufacturer, the not operation personnel can't learn, also just can not open protective cover 3, thereby, packing box is played protective action.
The lower surface of screw rod 6 is provided with " protruding " platform, should " protruding " platform be triangle or pentagon, and non-special tool can't rotate.
Claims (4)
1. production tree packing box protective cover, form by protective cover (3) and lock body (4), it is characterized in that: protective cover (3) is two semicircular body that have earrings, connect by rotating shaft (1), the earrings of two protective covers (3) intersects to form the last lockhole (7) and the following lockhole (8) of lock body (4) mutually, the centre has the through hole that can pass polished rod on protective cover (3) upper surface, has the through hole (9) greater than well head threeway external diameter on the lower surface; Lock body has hollow hole on (4), and locking bar (5) is installed in the hollow hole, and the bottom of hollow hole is provided with screw thread and screw rod (6) is installed; The middle part of locking bar (5) is " T " font body, should be positioned between lockhole (7) and the following lockhole (8) by " T " font body.
2. production tree packing box protective cover according to claim 1 is characterized in that: be welded with polished rod guide wire (2) on protective cover (3).
3. production tree packing box protective cover according to claim 1 and 2 is characterized in that: the lower surface of screw rod (6) is provided with " protruding " platform.
4. production tree packing box protective cover according to claim 3 is characterized in that: " protruding " platform of the lower surface of screw rod (6) can be triangle or pentagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202960313U CN201810252U (en) | 2010-06-01 | 2010-08-18 | Christmas tree stuffing box protective covers |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020211265.3 | 2010-06-01 | ||
| CN201020211265 | 2010-06-01 | ||
| CN2010202960313U CN201810252U (en) | 2010-06-01 | 2010-08-18 | Christmas tree stuffing box protective covers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810252U true CN201810252U (en) | 2011-04-27 |
Family
ID=43893195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202960313U Expired - Fee Related CN201810252U (en) | 2010-06-01 | 2010-08-18 | Christmas tree stuffing box protective covers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810252U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734604A (en) * | 2012-04-27 | 2012-10-17 | 天津机辆轨道交通装备有限责任公司 | Intelligent intermission bailing type beam pumping unit outer cover lifting hole and rain-proof device |
-
2010
- 2010-08-18 CN CN2010202960313U patent/CN201810252U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734604A (en) * | 2012-04-27 | 2012-10-17 | 天津机辆轨道交通装备有限责任公司 | Intelligent intermission bailing type beam pumping unit outer cover lifting hole and rain-proof 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: 20110427 Termination date: 20140818 |
|
| EXPY | Termination of patent right or utility model |