CN201284628Y - Centralizer of screw pump transmission bar - Google Patents
Centralizer of screw pump transmission bar Download PDFInfo
- Publication number
- CN201284628Y CN201284628Y CNU2008200215624U CN200820021562U CN201284628Y CN 201284628 Y CN201284628 Y CN 201284628Y CN U2008200215624 U CNU2008200215624 U CN U2008200215624U CN 200820021562 U CN200820021562 U CN 200820021562U CN 201284628 Y CN201284628 Y CN 201284628Y
- Authority
- CN
- China
- Prior art keywords
- screw pump
- bearing
- centralizer
- friction device
- rod
- 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 provides a centralizer used for the transmission rod of a screw pump, consisting of a centralizing rod, a friction device and a bearing; wherein, the friction device is sheathed on the centralizing rod; and the bearing is arranged inside the friction device and the internal ring of the bearing is sheathed on the centralizing rod. The centralizer used for the transmission rod of the screw pump is connected between the transmission rods of the screw pump; the centralizer is temporarily fixed in the oil pipe and keeps still due to the friction force generated by the friction device; the abrasion is not generated between the outside of the friction device and the oil pipe; the transmission rod and the bearing has small friction coefficient and the abrasion between the transmission rod and the bearing is not generated; and therefore, the utility model can improve the reliability of the oil extracting system of the screw pump, increase the production period of the oil well and reduce the workover charge.
Description
One, technical field
The utility model is the equipment that oil field pumping well is used, and is a kind of screw pump drive link centralizer.
Two, background technology
In the oil well of producing with screw pump, sucker rod is lowered in the oil pipe, and sucker rod rotates the rotation of drive screw pump in oil pipe, thereby crude oil is adopted to ground.Sucker rod produces relative rotary motion with oil pipe in rotary course, must exist mutual wear problem.In order to prevent the wearing and tearing between the sucker rod and oil pipe in the screw pump oil production well, many abrasionproof measures have been taked at the scene, and wherein a kind of is centralizer to be installed connecting between the sucker rod, but the centralizer and the drive link that use at present are sliding friction, the easy wearing and tearing.
Three, summary of the invention
The purpose of this utility model provides a kind of screw pump drive link centralizer, improves the reliability of screw pump oil production system, increases the oil well production cycle, reduces workover cost.
The purpose of this utility model is achieved in that by righting rod, friction device, bearing to be formed, and friction device is sleeved on the righting rod, and bearing is installed in friction device inside, and bearing inner race is enclosed within on the righting rod.
The beneficial effects of the utility model are: screw pump drive link centralizer is connected between the screw pump drive link, the friction that friction device produces temporarily is fixed in the oil pipe it motionless, do not produce wearing and tearing between friction device outside and the oil pipe, friction factor is little between drive link and the bearing, also can not wear and tear, therefore, the utility model can reach purpose of design, can improve the reliability of screw pump oil production system, prolong the oil well production cycle, reduce workover cost.
Four, description of drawings
Accompanying drawing is the utility model embodiment assembled view.
Five, the specific embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described.
The utility model is made up of righting rod 1, friction device 2, bearing 3, and friction device 2 is sleeved on the righting rod 1, and bearing 3 is installed in friction device 2 inside, and bearing 3 inner rings are enclosed within on the righting rod 1.Respectively there is a bearing 3 at friction device 2 two ends.Just the utility model is connected between the screw pump drive link, radial dimension can change with tube inner wall under friction device 2 spring action thereon, tightly be attached on the tube inner wall that is mated, and the friction that produces between the tube inner wall temporarily is fixed in the oil pipe it motionless, during the rotation of screw pump drive link, friction device 2 does not rotate, the oil pipe so the screw pump drive link does not does not wear and tear.Driving righting rod 1 during the rotation of screw pump drive link rotates synchronously, produce relative rotation between friction device 2 endoporus and the righting rod 1, under the effect of bearing 3, friction factor between righting rod 1 and the friction device 2 is little, can not wear and tear each other, so the utility model self life-span is long, can prolong the oil well production cycle.
Claims (2)
1, a kind of screw pump drive link centralizer, it is characterized in that: form by righting rod (1), rubbing device (2), bearing (3), rubbing device (2) is sleeved on the righting rod (1), and bearing (3) is installed in rubbing device (2) inside, and bearing (3) inner ring is enclosed within on the righting rod (1).
2, screw pump drive link centralizer according to claim 1 is characterized in that: respectively there is a bearing (3) at rubbing device (2) two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200215624U CN201284628Y (en) | 2008-04-27 | 2008-04-27 | Centralizer of screw pump transmission bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200215624U CN201284628Y (en) | 2008-04-27 | 2008-04-27 | Centralizer of screw pump transmission bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201284628Y true CN201284628Y (en) | 2009-08-05 |
Family
ID=40949613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200215624U Expired - Fee Related CN201284628Y (en) | 2008-04-27 | 2008-04-27 | Centralizer of screw pump transmission bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201284628Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963640A (en) * | 2015-07-22 | 2015-10-07 | 中国石油化工股份有限公司 | Horizontal well coiled tubing lock type hydraulic bit feeding and alarming system |
-
2008
- 2008-04-27 CN CNU2008200215624U patent/CN201284628Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963640A (en) * | 2015-07-22 | 2015-10-07 | 中国石油化工股份有限公司 | Horizontal well coiled tubing lock type hydraulic bit feeding and alarming system |
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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: 20090805 Termination date: 20110427 |