CN201857921U - Dual-sliding-cover anti-theft wellhead cap of bailing well - Google Patents
Dual-sliding-cover anti-theft wellhead cap of bailing well Download PDFInfo
- Publication number
- CN201857921U CN201857921U CN2010205956273U CN201020595627U CN201857921U CN 201857921 U CN201857921 U CN 201857921U CN 2010205956273 U CN2010205956273 U CN 2010205956273U CN 201020595627 U CN201020595627 U CN 201020595627U CN 201857921 U CN201857921 U CN 201857921U
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- slip lid
- housing
- theft
- groove
- well
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Abstract
The utility model discloses a dual-sliding-cover anti-theft wellhead cap of a bailing well and mainly solves the problems that the existing anti-theft wellhead device is easy to damage and is high in cost, and a dedicated spanner used for a long time is easy to wear so that the wellhead device cannot be opened. The dual-sliding-cover anti-theft wellhead cap of the bailing well is characterized in that a groove is arranged on the outer wall of an upper sliding cover (4), and the groove is in clearance fit with an inner bore of a top plate of a shell body (5); the difference between the outer diameter of the upper sliding cover (4) and the outer diameter of the shell body (5) is positive number; a groove is arranged on the outer wall of a lower sliding cover (6), and the groove is in clearance fit with an inner bore of a bottom plate of the shell body (5); and a baffle plate (12) with air vents (7) is vertically fixed on the inner wall of the lower sliding cover (6). The anti-theft wellhead device has the anti-theft function, the top is not exposed and is difficult to damage, the oil gas in the well is exhausted, and the sundries are prevented from being thrown into the well.
Description
Technical field
The utility model relates to the used device of oil well on a kind of oil field, especially a kind of pair of slip lid theft-proof type bailing well wellhead cap.
Background technology
At present since oilfield exploitation to the later stage, the hyposmosis block increases gradually, bailing well also day by day increases thus.The problem that bailing well faces is that wellhead assembly is easily stolen; guaranteeing to prevent that again the lawless person from throwing foreign material by well head in well under the situation that OIH gas can be discharged simultaneously; therefore, Pithead preventing thieves unit protection bailing well is not subjected to the requisite device that the lawless person steals, destroys.The widely used well head anti-theft device of bailing well is that a kind of patent No. is ZL 200520021757.5 " a kind of Pithead preventing thieves device and special spanner thereof of discharging oil gas " at present, this device in use has the following disadvantages: 1, the Pithead preventing thieves device is installed on bailing well well head box cupling top, expose at the wellhead assembly top, is subject to the lawless person and destroys; 2, the endoporus on the Pithead preventing thieves device is bigger, and the lawless person can drop into foreign material by endoporus in well, destroys bailing well; 3, Pithead preventing thieves apparatus structure complexity.
Summary of the invention
[0003] existing Pithead preventing thieves device is easily destroyed, cost is high, baroque problem in order to solve, the utility model provides a kind of pair of slip lid theft-proof type bailing well wellhead cap, this Pithead preventing thieves cap needs special tool just can open, have antitheft function, and the top do not expose be difficult for destroyed, can discharge OIH gas and can prevent from well, to throw in foreign material again.
The technical solution of the utility model is: a kind of pair of slip lid theft-proof type bailing well wellhead cap, comprise outside threaded housing, also comprise slip lid, following slip lid, baffle plate, on the outer wall of described upward slip lid a groove is arranged, described groove and housing top board endoporus are matched in clearance, and the difference of last slip lid external diameter and housing external diameter is a positive number; On the described downslide cover outer wall groove is arranged, described groove and housing base plate endoporus are matched in clearance, and the fixed vertical direction is provided with the baffle plate of steam vent on the described slip lid inwall down.
The top board of described housing, base plate and sidewall welding; Described last slip lid is made up of last slip lid top board, last slip lid base, and last slip lid base cross section is L shaped, its top and the welding of last slip lid top board; Described slip lid down is made up of downslide lid top panel, downslide cover base, and downslide cover base cross section is L shaped, its top and the welding of downslide lid top panel.
The utlity model has following beneficial effect: owing to take such scheme, this Pithead preventing thieves cap is installed on the inboard middle and upper part of bailing well well head box cupling by housing, last slip lid and following slip lid and housing endoporus matched in clearance, can rotate arbitrarily, make wellhead assembly not have special origin of force, can only just can open by the opener of special use, have excellent antitheft function; Cruciform baffles agitated vessel in the following slip lid forms steam vent, makes that can discharge the interior natural gas of well can prevent to drop into foreign material again in well.
Description of drawings:
Fig. 1 is the structural representation of Pithead preventing thieves cap in the utility model;
Fig. 2 is the sectional view along A-A among Fig. 1;
Fig. 3 is the structural representation of the utility model middle gear formula special spanner;
Fig. 4 is the sectional view along B-B among Fig. 3;
Fig. 5 is the structural representation of special spanner when cooperating with wellhead cap.
1-tension force pawl among the figure, 2-planetary gear, 3-centre wheel, the last slip lid of 4-, 5-shell, slip lid under the 6-, 7-steam vent, 8-handle, 9-main shaft, the last slip lid top board of 10-, the last slip lid base of 11-, 12-baffle plate, 13-downslide lid top panel, 14-downslide cover base, 15-support plate.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with shown in Figure 2, a kind of pair of slip lid theft-proof type bailing well wellhead cap, comprise outside threaded housing 5, also comprise slip lid 4, following slip lid 6, baffle plate 12, on the outer wall of described upward slip lid 4 groove is arranged, described groove and housing 5 top board endoporus are matched in clearance, make that upward slip lid 4 can freely rotate but can not be by taking out in the housing 5, and the difference of last slip lid 4 external diameters and housing 5 external diameters is a positive number, goes up the screw thread that slip lid 4 can block housing 5 outsides like this, makes outside its unlikely being exposed to; Described also have a groove on slip lid 6 outer walls down, described groove and housing 5 base plate endoporus are matched in clearance, make that slip lid 6 also can freely rotate but can not be taken out by housing 5 bottoms down, vertical direction has the baffle plate 12 of steam vent 7 on described slip lid 6 inwalls down, as preferably, baffle plate 12 can be cross in the horizontal direction, just form steam vent 7 between cruciform girder and following slip lid 6 inwalls, baffle plate 12 can prevent that Xiang Jingxiang from throwing in foreign material, simultaneously, the existence of steam vent 7 makes the oil gas in the well to discharge again, has avoided in the oil well oil-air pressure too high and cause and produce and security incident.This wellhead assembly can all screw in the casing coupling, is matched in clearance between slip lid 6 and the housing 5 under last slip lid 4 reaches, and can rotate arbitrarily, makes this wellhead assembly not have special stress point, rotates in any case and can not drive housing 5 rotations, has played antitheft effect.
This a kind of pair of slip lid theft-proof type bailing well wellhead cap can be implemented in the following ways: the top board of described housing 5, base plate and sidewall welding; Described go up slip lid 4 by last slip lid top board 10, go up slip lid base 11 and form, it is described that to go up slip lid base 11 cross sections be L shaped, its top and last slip lid top board 10 weld; Described slip lid 6 down is made up of downslide lid top panel 13, downslide cover base 14, and downslide cover base 14 cross sections are L shaped, its top and 13 welding of downslide lid top panel.Its process can be like this: the at first base plate of housing 5 and sidewall welding, the cover base 14 that glides then passes behind the base plate of housing 5 downslide lid top panel 13 welding with top, to go up slip lid base 11 again and put into enclosure interior, the top board of welded case 5 and sidewall will be gone up slip lid top board 10 and last slip lid base 11 welding at last.
By Fig. 3 in conjunction with shown in Figure 4, a kind of pair of used gear type special spanner of slip lid theft-proof type bailing well wellhead cap, comprise handle 8 and coupled main shaft 9, also comprise tension force pawl 1, planetary gear 2, centre wheel 3, described main shaft 9 is fixedlyed connected with centre wheel 3, along the circumferential direction uniform several planetary gears 2 on the plane at centre wheel 3 places, and planetary gear 2 and centre wheel 3 engagements, described planetary gear 2 external stabilities have tension force pawl 1, and there are teeth the end of tension force pawl 1, to increase the frictional force to housing 5 inwalls.Also can fix the support plate 15 of a level in main shaft 9 ends, the central axis of planetary gear 2 is fixed on the support plate 15 and is perpendicular.Like this, pull handle 8, main shaft 9 just drives centre wheel 3 and rotates, and planetary gear 2 bears centre wheel 3 and rotates, and then tension force pawl 1 stretches out or withdraws.Can change by changing planetary gear 2 after the 1 long-time use wearing and tearing of tension force pawl, and unlikely this spanner that makes is scrapped, and replaced the method that original special spanner employing spring steel is made the tension force pawl, saved cost of production.
Two slip lid theft-proof type bailing well wellhead caps and gear type special spanner thereof: as shown in Figure 5, earlier the inboard of this wellhead assembly housing 5 is inserted in the bottom of special spanner, rotate counterclockwise handle 8, tension force pawl 1 is stretched out with housing 5 inwalls contact, stressed, until casing coupling that wellhead assembly is back-outed, just can carry out oil extraction operation; After the bailing construction wellhead assembly is screwed into casing coupling, equally the inboard of wellhead assembly is inserted in the bottom of special spanner, clockwise rotate handle 8, tension force pawl 1 is stretched out with housing 5 inwalls contact, stressed, until wellhead assembly is screwed in the casing coupling, rotate counterclockwise handle 8, tension force pawl 1 is regained, can take off special spanner.
Claims (2)
1. two slip lid theft-proof type bailing well wellhead cap, comprise outside threaded housing (5), it is characterized in that: also comprise slip lid (4), following slip lid (6), baffle plate (12), on the outer wall of described upward slip lid (4) groove is arranged, described groove and housing (5) top board endoporus is a matched in clearance, and the difference of last slip lid (4) external diameter and housing (5) external diameter is a positive number; Described have a groove on slip lid (6) outer wall down, and described groove and housing (5) base plate endoporus is a matched in clearance, and the fixed vertical direction is provided with the baffle plate (12) of steam vent (7) on described slip lid (6) inwall down.
2. according to claim 1 pair of slip lid theft-proof type bailing well wellhead cap is characterized in that: the top board of described housing (5), base plate and sidewall welding; Described last slip lid (4) is made up of last slip lid top board (10), last slip lid base (11), and last slip lid base (11) cross section is L shaped, its top and last slip lid top board (10) welding; Described slip lid (6) down is made up of downslide lid top panel (13), downslide cover base (14), and downslide cover base (14) cross section is L shaped, its top and downslide lid top panel (13) welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205956273U CN201857921U (en) | 2010-11-08 | 2010-11-08 | Dual-sliding-cover anti-theft wellhead cap of bailing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205956273U CN201857921U (en) | 2010-11-08 | 2010-11-08 | Dual-sliding-cover anti-theft wellhead cap of bailing well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201857921U true CN201857921U (en) | 2011-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205956273U Expired - Fee Related CN201857921U (en) | 2010-11-08 | 2010-11-08 | Dual-sliding-cover anti-theft wellhead cap of bailing well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201857921U (en) |
Cited By (2)
| 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 |
| CN117166954A (en) * | 2023-09-15 | 2023-12-05 | 哈尔滨汇聚裕泰科技有限公司 | Antitheft oil extraction wellhead device |
-
2010
- 2010-11-08 CN CN2010205956273U patent/CN201857921U/en not_active Expired - Fee Related
Cited By (3)
| 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 |
| CN117166954A (en) * | 2023-09-15 | 2023-12-05 | 哈尔滨汇聚裕泰科技有限公司 | Antitheft oil extraction wellhead device |
| CN117166954B (en) * | 2023-09-15 | 2024-05-14 | 大庆丹枫石油技术开发有限公司 | Antitheft oil extraction wellhead 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: 20110608 Termination date: 20161108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |