CN201016279Y - Pumping rod error-correcting abrasion-reducing rotary rolling coupling - Google Patents
Pumping rod error-correcting abrasion-reducing rotary rolling coupling Download PDFInfo
- Publication number
- CN201016279Y CN201016279Y CNU2007200181835U CN200720018183U CN201016279Y CN 201016279 Y CN201016279 Y CN 201016279Y CN U2007200181835 U CNU2007200181835 U CN U2007200181835U CN 200720018183 U CN200720018183 U CN 200720018183U CN 201016279 Y CN201016279 Y CN 201016279Y
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- CN
- China
- Prior art keywords
- rolling
- coupling
- sucker rod
- connection body
- top connection
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- 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 provides a rotary rolling coupling for correcting the offset and reducing the wear used in the sucker rod, pertaining to a coupling device used in the sucker rod for oil production in oil field. The device is equipped with a top connection body fixedly positioned at the upper part of the swing rod, and a spherical head fixed on the lower part of the swing rod is positioned in the lower connection body. A rolling sleeve beneath the top connection body is movably covered at outside of the swing rod, the rolling sleeve is equipped with a rolling ball, and a pad between the rolling sleeve and the lower connection body is fixed on the swing rod. Due to the existence of the spherical head on the coupling, the top connection body can follow the swing rod to swing during use, thereby making the coupling to become a flectional coupling. The coupling can reduce the transverse fracture force on the upstroke of the oil production and the bending load of the sucker rod on the down stroke of the oil production, thereby effectively alleviating the eccentric wear between the sucker rod and the inner wall of the oil pipe, promoting the service life of the sucker rod and the oil pipe, meanwhile being convenient for the salvaging operation at necessary. The rolling sleeve and the rolling ball on the rolling sleeve can play the role of localization, centralizing and reducing wear.
Description
Technical field
The utility model provides a kind of oil field that is used in to recover the oil with the box cupling device on the sucker rod.
Background technology
Owing to reasons such as oil well hole deviations, can produce eccentric wear between sucker rod and the tube inner wall.Present solution major part focuses on correction, as various centralizers, righting rod, weighted lever, wear bar and anti-eccentric wear box cupling etc.But this solution not only can not be eliminated the eccentric wear friction between sucker rod and the tube inner wall, and it is increased the weight of, and sucker rod or worn out oil pipe can rub, fracture.Its reason is, can form a horizontal folding power at the box cupling place when sucker rod bends because of hole deviation, and the angle of correction is big more, and this folding power is big more, and the eccentric wear friction is big more.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of sucker rod correction anti-attrition rotation rolling box cupling, effectively to alleviate the eccentric wear between sucker rod and the tube inner wall.
The utility model is to realize like this, sucker rod correction anti-attrition rotation rolling box cupling, it has the top connection body to be fixed on swing arm top, the fixing ballhead in swing arm bottom is installed in the lower contact body, the outside of cover movable set at swing arm of rolling arranged below the top connection body, rolling is equipped with ball above the cover, and rolling has the holder cover to be fixed on the swing arm between cover and the lower contact body.
Adopt the rotation rolling box cupling of said structure, can be installed between the sucker rod at hole deviation place by upper and lower fittings body and substitute original box cupling.Owing to the existence of ballhead, the top connection body can be swung with swing arm, makes this box cupling become the box cupling of flexible in the use.Like this, sucker rod and the crooked synchronously state of oil pipe in the time of can be with original hole deviation, change single sucker rod into and in oil pipe, be tending towards becoming straight, when the upstroke of oil recovery process, can reduce horizontal folding power, when down stroke, can reduce the bending load of sucker rod, thereby alleviate the eccentric wear between sucker rod and the tube inner wall effectively, improve the application life of R a T, also be convenient to fishing in case of necessity.Roll cover and top ball thereof can play and adjust the location, set upright the effect with anti-attrition, reduced frictional resistance, alleviated the oil pumper load.
Description of drawings
Fig. 1 is the schematic diagram of the utility model structure.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing further specifies structure of the present utility model.
As shown in drawings, the sucker rod correction anti-attrition rotation rolling box cupling of the utility model, it has top connection body (1) to be fixed on swing arm (5) top, the fixing ballhead (6) in swing arm bottom is installed in the lower contact body (8), the outside of cover (2) movable set in swing arm (5) of rolling arranged below the top connection body (1), rolling is equipped with ball (3) above the cover, and rolling has holder cover (4) to be fixed on the swing arm between cover and the lower contact body.
During use,, realize being connected between this swivel joint and the upper and lower sucker rod by the external screw thread on top connection body top and the threaded groove (9) of lower contact body bottom.
Have adjustment pressure cap (10) to be installed in the lower contact body (8) on described ballhead (6), the inner chamber of adjusting pressure cap is up big and down small.Adjusting pressure cap is installed in the lower contact body by screw thread.According to the size of hole deviation angle, by rotating the adjustment pressure cap it is moved up and down, the hunting range of adjustable swing bar, i.e. the maximum flex angle of this swivel joint.After adjustment is finished, can be integrally welded with adjusting pressure cap and lower contact body.
Ballhead is installed in the spherical groove corresponding in the lower contact body.There is alignment pin (7) lower end of bulb body, and the outer lower contact intracoelomic cavity size of alignment pin is slightly larger than alignment pin.In inclined shaft, ballhead can rotate in the spherical groove of lower contact body, makes the top connection body swing with swing arm, reaches correction anti-attrition purpose.And roll cover and top ball thereof can rotate respectively when contacting with tube inner wall and roll, thereby play the location, set upright, the anti-attrition effect.
Claims (2)
1. the rolling box cupling is rotated in sucker rod correction anti-attrition, it is characterized in that, it has top connection body (1) to be fixed on swing arm (5) top, the fixing ballhead (6) in swing arm bottom is installed in the lower contact body (8), the outside of cover (2) movable set in swing arm (5) of rolling arranged below the top connection body (1), rolling is equipped with ball (3) above the cover, and rolling has holder cover (4) to be fixed on the swing arm between cover and the lower contact body.
2. sucker rod correction anti-attrition rotation rolling box cupling as claimed in claim 1 is characterized in that having adjustment pressure cap (10) to be installed in the lower contact body (8) on described ballhead (6), the inner chamber of adjusting pressure cap is up big and down small.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200181835U CN201016279Y (en) | 2007-01-30 | 2007-01-30 | Pumping rod error-correcting abrasion-reducing rotary rolling coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200181835U CN201016279Y (en) | 2007-01-30 | 2007-01-30 | Pumping rod error-correcting abrasion-reducing rotary rolling coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201016279Y true CN201016279Y (en) | 2008-02-06 |
Family
ID=39056763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200181835U Expired - Fee Related CN201016279Y (en) | 2007-01-30 | 2007-01-30 | Pumping rod error-correcting abrasion-reducing rotary rolling coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201016279Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168120A (en) * | 2016-08-29 | 2016-11-30 | 王国良 | Anti-sway deviation correcting device |
| CN110821421A (en) * | 2018-08-14 | 2020-02-21 | 中国石油天然气股份有限公司 | Sucker rod eccentric wear prevention device and sucker rod |
-
2007
- 2007-01-30 CN CNU2007200181835U patent/CN201016279Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168120A (en) * | 2016-08-29 | 2016-11-30 | 王国良 | Anti-sway deviation correcting device |
| CN110821421A (en) * | 2018-08-14 | 2020-02-21 | 中国石油天然气股份有限公司 | Sucker rod eccentric wear prevention device and sucker rod |
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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: 20080206 |