CN2674070Y - Anti-erroneous wear oil sucking rod centering guide - Google Patents
Anti-erroneous wear oil sucking rod centering guide Download PDFInfo
- Publication number
- CN2674070Y CN2674070Y CN 200420001924 CN200420001924U CN2674070Y CN 2674070 Y CN2674070 Y CN 2674070Y CN 200420001924 CN200420001924 CN 200420001924 CN 200420001924 U CN200420001924 U CN 200420001924U CN 2674070 Y CN2674070 Y CN 2674070Y
- Authority
- CN
- China
- Prior art keywords
- abrasionproof
- wear
- rod
- sucker rod
- half lining
- 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 an anti-erroneous wear oil sucking rod centering guide, comprising a sucking rod, a wear-proof half bush an a wear-proof half bush b and a centering cover. The inner diameter of the centering cover is slightly longer than the diameter of the rod head of the sucking rod. The centering cover can be sheathed on the rod body of the sucking rod from the rod head point of the sucking rod. The wear-proof half bush a and the wear-proof half bush b are buckled on the sucking rod at first, in order to make the wear-proof half bush a and the wear-proof half bush b synthesized with one cylinder body. The screw threads on the wear-proof half bush a and the wear-proof half bush b become complete continuous screw threads. The screw threads are connected with the upper part of the centering cover spirally. When the oil is sucked, the sucking rod is moved up and down. Because the friction force between the centering cover and the inner surface of the oil pipe is larger than the friction force between the wear-proof bush and the sucking rod, when the oil is sucked, the centering cover is not moved, the centering cover can not be rubbed to abrasion on the rougher inner surface of the oil pipe. The life time of the centering cover is long.
Description
One, technical field
The utility model is the equipment of oil field oil recovery usefulness, and particularly a kind of eccentric wear prevention pumping rod centralizer belongs to engineering goods.
Two, background technology
In sucker-rod pumping system, no matter be straight well or inclined shaft, R a T all is relative motion in contact, therefore, exists inevitable wear problem between sucker rod and the oil pipe.For avoiding oil pipe, sucker rod wear problems occurring, the normal oil pumping rod centering device that adopts on the oil recovery technique.Existing oil pumping rod centering device kind is more; generally all be to be fixed on the sucker rod; be synchronized with the movement with sucker rod; nonmetals and tube inner wall during oil pumping on the centralizer are done relative motion, because nonmetals are soft, oil pipe can not wear and tear; played temporary transient protective effect; but the non-metallic material grinding abrasion is very fast, and the time of protection oil pipe, sucker rod is short, and heavy wear still appears in oil pipe, oil pick-up tube.And for example application number is 03205080.1 eccentric wear prevention pumping rod centralizer, be on the abrasionproof lining process and assemble groove, as will be installed on the large diameter sucker rod time, fitting recess is bigger, and its metallic area is reduced, easy deformation, friction area reduces, the life-span is not long.
Three, summary of the invention
The purpose of this utility model is a kind of long-life eccentric wear prevention pumping rod centralizer of design, avoids sucker rod sucker rod, oil pipe wear problems to occur in the bending of oil pipe internal cause, inclination.
The purpose of this utility model is achieved in that by sucker rod, abrasionproof half lining A, abrasionproof half lining B, supporting positive cover to be formed.The supporting positive cover internal diameter is a bit larger tham the sucker rod head diameter, it can be inserted on the sucker rod body of rod from sucker rod head, abrasionproof half lining A, abrasionproof half lining B are buckled on the sucker rod earlier, make abrasionproof half lining A, abrasionproof half lining B synthesize a cylinder, screw thread on abrasionproof half lining A, the abrasionproof half lining B becomes the complete and continuous screw thread, and this screw thread connects with internal thread on the supporting positive cover.Abrasionproof half lining A, abrasionproof half lining B adopt metal material, and inner surface is very smooth, and supporting positive cover is wear-resisting soft material, and the eccentric wear prevention pumping rod centralizer can slide on the body of rod of sucker rod.During oil pumping, the upper and lower motion of sucker rod is because the frictional force of supporting positive cover and pipe inner surface is greater than the frictional force of abrasionproof lining and sucker rod, so supporting positive cover does not move during oil pumping.
The beneficial effects of the utility model are: the eccentric wear prevention pumping rod centralizer can slide on the body of rod of sucker rod, and sucker rod has been played good centralizing function, can alleviate the degree of crook of sucker rod in oil pipe, thereby alleviates oil pipe, sucker rod wearing and tearing.Supporting positive cover is wear-resisting soft material, can not damage oil pipe, and during because of the upper and lower motion of sucker rod, the eccentric wear prevention pumping rod centralizer does not move, and supporting positive cover can not rub on more coarse pipe inner surface and wear and tear, and the supporting positive cover life-span is long.The abrasionproof sleeve inner surface is very smooth, though it with sucker rod between relative slip is arranged, also be not easy wearing and tearing.Therefore, the eccentric wear prevention pumping rod centralizer can guarantee that oil pipe, sucker rod do not wear and tear, and can also guarantee that supporting positive cover has higher application life.Owing to do not increase all the other stressed members on rod string, not existing breaks takes off problem, and component are few, the reliability height, and easy for installation, cost is low, and functional performance is good.
Four, description of drawings
Fig. 1 is the utility model embodiment assembling drawing.
Fig. 2 is the front view of part 2,3 among Fig. 1.The crack of meeting between the part 2,3 is convex concave at the middle part.
Fig. 3 is the vertical view of part 2,3 among Fig. 1.
Five, the specific embodiment
Below in conjunction with accompanying drawing embodiment is described.
Among the figure: the 1st, sucker rod, the 2nd, abrasionproof half lining A, the 3rd, abrasionproof half lining B, the 4th, supporting positive cover.Be that the utility model is made up of sucker rod 1, abrasionproof half lining A2, abrasionproof half lining B3, supporting positive cover 4.Supporting positive cover 4 internal diameters are a bit larger tham the sucker rod head diameter, it can be inserted on the sucker rod body of rod from sucker rod head.Abrasionproof half lining A2, abrasionproof half lining B3 are buckled on the sucker rod earlier, make abrasionproof half lining A2, abrasionproof half lining B3 synthesize a cylinder, screw thread on abrasionproof half lining A2, the abrasionproof half lining B3 becomes the complete and continuous screw thread, and this screw thread connects with internal thread on the supporting positive cover 4.The crack of meeting between abrasionproof half lining A2, the abrasionproof half lining B3 is convex concave at the middle part.Abrasionproof half lining A, abrasionproof half lining B adopt metal material, and inner surface is very smooth, and supporting positive cover 4 is wear-resisting soft material, and the eccentric wear prevention pumping rod centralizer can slide on the body of rod of sucker rod.During oil pumping, the upper and lower motion of sucker rod is because the frictional force of supporting positive cover 4 and pipe inner surface is greater than the frictional force of abrasionproof lining and sucker rod, so supporting positive cover 4 does not move during oil pumping.
Claims (1)
1, a kind of eccentric wear prevention pumping rod centralizer, by sucker rod (1), abrasionproof half lining A (2), abrasionproof half lining B (3), supporting positive cover (4) is formed, it is characterized in that: supporting positive cover (4) internal diameter is a bit larger tham the sucker rod head diameter, it can be inserted on the sucker rod body of rod from sucker rod head, abrasionproof half lining A (2), abrasionproof half lining B (3) is buckled on the sucker rod earlier, make abrasionproof half lining A (2), abrasionproof half lining B (3) synthesizes a cylinder, abrasionproof half lining A (2), screw thread on the abrasionproof half lining B (3) becomes the complete and continuous screw thread, thread connection on this screw thread and the supporting positive cover (4), abrasionproof half lining A (2), the crack of meeting between the abrasionproof half lining B (3) is convex concave at the middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420001924 CN2674070Y (en) | 2004-01-08 | 2004-01-08 | Anti-erroneous wear oil sucking rod centering guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420001924 CN2674070Y (en) | 2004-01-08 | 2004-01-08 | Anti-erroneous wear oil sucking rod centering guide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674070Y true CN2674070Y (en) | 2005-01-26 |
Family
ID=34482183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420001924 Expired - Fee Related CN2674070Y (en) | 2004-01-08 | 2004-01-08 | Anti-erroneous wear oil sucking rod centering guide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2674070Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994488A (en) * | 2009-08-25 | 2011-03-30 | 罗绍东 | Screw pump well sucker rod centralizer with bidirectional protection effect |
| CN106522859A (en) * | 2016-12-29 | 2017-03-22 | 江苏省无锡探矿机械总厂有限公司 | Arc-shaped slip |
-
2004
- 2004-01-08 CN CN 200420001924 patent/CN2674070Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994488A (en) * | 2009-08-25 | 2011-03-30 | 罗绍东 | Screw pump well sucker rod centralizer with bidirectional protection effect |
| CN106522859A (en) * | 2016-12-29 | 2017-03-22 | 江苏省无锡探矿机械总厂有限公司 | Arc-shaped slip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |