CN203867479U - Anti-attrition righting sucker rod - Google Patents
Anti-attrition righting sucker rod Download PDFInfo
- Publication number
- CN203867479U CN203867479U CN201420117469.9U CN201420117469U CN203867479U CN 203867479 U CN203867479 U CN 203867479U CN 201420117469 U CN201420117469 U CN 201420117469U CN 203867479 U CN203867479 U CN 203867479U
- Authority
- CN
- China
- Prior art keywords
- rod
- attrition
- nylon
- oil
- oil pipe
- 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 discloses an anti-attrition righting sucker rod which comprises a rod body and rod heads at the two ends of the rod body. The external section of each rod head is provided with external threads, a wrench square hole is formed in the internal section of each rod head, the external section of the rod head of one end of the rod body is provided with an anti-attrition righting coupling through the external threads, a nylon righting sleeve is formed on the outer wall of the rod body in an injection molding mode, the outer diameter of the nylon righting sleeve is slightly smaller than the inner diameter of a matched oil pipe, and oil outlet channels are formed in the circumferential wall of the nylon righting sleeve in the axial direction of the rod body at intervals. Due to the fact that the nylon righting sleeve has good elasticity, toughness and anti-attrition characteristics, when the sucker rod moves up and down repeatedly, the nylon righting sleeve makes contact with the inner wall of the oil pipe, mechanical attrition generated by direct contact of the rod body and the inner wall of the oil pipe is avoided, the sucker rod and the oil pipe cannot be damaged in a long-term using process, the oil outlet channels are formed in the circumferential wall of the nylon righting sleeve, crude oil can be pumped and extracted to the ground through the oil outlet channels effectively, and pumping and extraction of the crude oil cannot be influenced due to the fact that the clearance between the sucker rod and the oil pipe is reduced by adding the nylon righting sleeve.
Description
Technical field
The utility model relates to a kind of sucker rod, especially relates to a kind of anti-attrition centering sucker rod.
Background technology
Sucker rod is the vitals of sucker rod pumping equipment, it is by the plunger oil-well pump under the transmission of power rail of oil pumper, plunger oil-well pump is the oil well pump of up-and-down reciprocating motion, plunger oil-well pump under oil pipeline, be to be connected with ground oil pumper by many in oil pipe connected sucker rods, oil pumper drives plunger oil-well pump to pump by sucker rod underground crude oil is pumped on ground.Sucker rod comprises the bar head at the body of rod and body of rod two ends, and outer section of bar head has external screw thread, and the inner segment of bar head is provided with spanner side, and the connection between sucker rod is that the external screw thread by the outer section of bar head connects with rod collar.Under the sucker rod of work needs in oil pipe, because most of producing well is not straight up and down, there is certain inclination, when sucker rod pumps in oil pipe, the body of rod can be attached to and on the inwall of oil pipe and between tube inner wall, produce friction, cause the mutual wearing and tearing of R a T, long term wear can cause rod broken inefficacy or tubing leak and cannot normally use.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of long-term use and also can cause R a T mutually to wear and tear and then can not cause rod broken inefficacy or tubing leak and can not affect the anti-attrition centering sucker rod of crude oil pumping.
For solving the problems of the technologies described above, the utility model anti-attrition centering sucker rod, the bar head that comprises the body of rod and body of rod two ends, outer section of bar head has external screw thread, the inner segment of bar head is provided with spanner side, and wherein outer section of the bar head of body of rod one end is equipped with anti-attrition righting box cupling by external screw thread, is injected with nylon supporting positive cover on the outer wall of the described body of rod, the external diameter of nylon supporting positive cover is slightly less than the internal diameter of institute's adapted oil pipe, and the axially spaced-apart along the described body of rod in the circumferential wall of nylon supporting positive cover is provided with oil discharge passage.
Adopt the anti-attrition centering sucker rod of said structure, on outer wall due to the described body of rod, be injected with nylon supporting positive cover, the external diameter of nylon supporting positive cover is slightly less than the internal diameter of institute's adapted oil pipe, axially spaced-apart along the described body of rod in the circumferential wall of nylon supporting positive cover is provided with oil discharge passage, because nylon supporting positive cover itself has good elasticity, toughness and antiwear characteristic, when sucker rod pumps, nylon supporting positive cover contacts with tube inner wall, avoided the direct mechanical wear producing that contacts because of the body of rod and tube inner wall, long-term use can not damage sucker rod and oil pipe, the oil discharge passage arranging in nylon supporting positive cover circumferential wall, can effectively guarantee that crude oil is pumped on ground through oil discharge passage, can not dwindle the gap between R a T because setting up nylon supporting positive cover and affect the pumping of crude oil.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is that the master of the utility model anti-attrition centering sucker rod cuts open schematic diagram depending on office.
Fig. 2 is the A-A line sectional structure enlarged diagram along Fig. 1.
The specific embodiment
Referring to Fig. 1, Fig. 2, the utility model anti-attrition centering sucker rod, the bar head 2 that comprises the body of rod 1 and body of rod two ends, outer section of bar head 2 has external screw thread 3, the inner segment of bar head 2 is provided with spanner side 4, and wherein outer section of the bar head 2 of the body of rod 1 one end is equipped with anti-attrition righting box cupling 5 by external screw thread 3, is injected with nylon supporting positive cover 6 on the outer wall of the described body of rod 1, the external diameter of nylon supporting positive cover 6 is slightly less than the internal diameter of institute's adapted oil pipe, and the axially spaced-apart along the described body of rod 1 in the circumferential wall of nylon supporting positive cover 6 is provided with oil discharge passage 7.
Claims (1)
1. an anti-attrition centering sucker rod, the bar head (2) that comprises the body of rod (1) and body of rod two ends, outer section of bar head (2) has external screw thread (3), the inner segment of bar head (2) is provided with spanner side (4), wherein outer section of the bar head (2) of the body of rod (1) one end is equipped with anti-attrition righting box cupling (5) by external screw thread (3), it is characterized in that: on the outer wall of the described body of rod (1), be injected with nylon supporting positive cover (6), the external diameter of nylon supporting positive cover (6) is slightly less than the internal diameter of institute's adapted oil pipe, axially spaced-apart along the described body of rod (1) in the circumferential wall of nylon supporting positive cover (6) is provided with oil discharge passage (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420117469.9U CN203867479U (en) | 2014-03-17 | 2014-03-17 | Anti-attrition righting sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420117469.9U CN203867479U (en) | 2014-03-17 | 2014-03-17 | Anti-attrition righting sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867479U true CN203867479U (en) | 2014-10-08 |
Family
ID=51648449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420117469.9U Expired - Fee Related CN203867479U (en) | 2014-03-17 | 2014-03-17 | Anti-attrition righting sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867479U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756620A (en) * | 2014-12-15 | 2016-07-13 | 中国石油天然气股份有限公司 | Oil pipe cleaner |
-
2014
- 2014-03-17 CN CN201420117469.9U patent/CN203867479U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756620A (en) * | 2014-12-15 | 2016-07-13 | 中国石油天然气股份有限公司 | Oil pipe cleaner |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20200317 |