CN2758448Y - Anti offset grinding centralizer of oilo pumping rod - Google Patents
Anti offset grinding centralizer of oilo pumping rod Download PDFInfo
- Publication number
- CN2758448Y CN2758448Y CN 200420115612 CN200420115612U CN2758448Y CN 2758448 Y CN2758448 Y CN 2758448Y CN 200420115612 CN200420115612 CN 200420115612 CN 200420115612 U CN200420115612 U CN 200420115612U CN 2758448 Y CN2758448 Y CN 2758448Y
- Authority
- CN
- China
- Prior art keywords
- bearing pin
- pipe nipple
- sucker rod
- locating hole
- abrasion preventing
- 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 relates to an eccentric wear preventing centralizer for a sucker rod, which comprises a pipe nipple, wherein the side wall of the pipe nipple forms a clearance fit with and is sheathed with a centralizing sleeve, the external surface of the centralizing sleeve is provided with a plurality of spiral flow passages which are communicated in an upward and downward way in a vertical direction, a plurality of W-shaped guide sliding chutes which are connected end to end are arranged at the middle part of the side wall of the pipe nipple in a surrounding way, the upper end points and the lower end points of the guide sliding chutes are respectively provided with reversed U-shaped reversing slots or U-shaped reversing slots, the distance between the reversed U-shaped reversing slots or the U-shaped reversing slots are corresponding to the upward stroke and downward stroke of the pipe nipple, the middle part of the side wall of the centralizing sleeve is provided with at least a pin roll positioning hole along a radial direction, the inside of each of the pin roll positioning holes is provided with a tappet pin roll and the internal section of each of the tappet pin rolls is respectively matched with the guide sliding chutes. The utility model has the purpose of providing an eccentric wear preventing centralizer for a sucker rod which has the advantages of simple structure and good centralizing and eccentric wear preventing effects.
Description
Technical field
The utility model relates to a kind of oil production equipment annex, relates in particular to the sucker rod deflection abrasion preventing centralizer.
Background technology
In the prior art, at present, in oil field development is produced, mainly be pumping production, along with Oilfield developing production, the enforcement of technological measures such as inclined shaft, horizontal well, sidetracked hole, the eccentric wear that the sucker rod of a large amount of oil wells and box cupling thereof and tube inner wall produce is more and more serious, shortens greatly the application life of oil pipe and sucker rod, the oil well operation is frequent, had a strong impact on Oilfield developing production, produced eccentric wear, will set upright sucker rod in order to prevent sucker rod and box cupling thereof and tube inner wall.The structural shape of recommending in " oil pumping rod centering device " standard, performance etc. fall behind, though can play certain anti-eccentric wear effect of setting upright, performance is not good, and effect is not ideal enough.
The utility model content
The purpose of this utility model provides a kind of simple in structure, sets upright the anti-effective sucker rod deflection abrasion preventing centralizer of eccentric wear.
Sucker rod deflection abrasion preventing centralizer of the present utility model, comprise pipe nipple, be set with to matched in clearance supporting positive cover on the sidewall of pipe nipple, the external surface of supporting positive cover vertically is provided with on many, the spiral flow channel of following perforation, middle part around described pipe nipple sidewall is provided with the end to end guide chute of a plurality of W shapes, on the guide chute, distance between the lower end is corresponding with the stroke up and down of described pipe nipple, the middle part of the sidewall of described supporting positive cover radially is provided with at least one bearing pin locating hole, be provided with the pushing sleeve bearing pin in each bearing pin locating hole, section matches with guide chute respectively in each pushing sleeve bearing pin.
Sucker rod deflection abrasion preventing centralizer of the present utility model, upper and lower two end points places of wherein said guide chute have ∩ shape commutation groove or ∪ shape commutation groove respectively, and the quantity of described bearing pin locating hole is 2-8, and the outer end in each bearing pin locating hole is provided with obstruction.
Sucker rod deflection abrasion preventing centralizer of the present utility model, wherein said pushing sleeve bearing pin and described obstruction are adopted to be threaded and are assemblied in the described bearing pin locating hole.
Sucker rod deflection abrasion preventing centralizer of the present utility model, wherein said pipe nipple comprise screw thread pipeline section and threaded rod section, and the screw thread pipeline section adopts screw thread to link to each other with the threaded rod section.
Sucker rod deflection abrasion preventing centralizer of the present utility model, wherein said obstruction adopt plastics or elastomeric material to make.
It is that zigzag cannelure replaces that sucker rod deflection abrasion preventing centralizer of the present utility model, the end to end guide chute of wherein said a plurality of W shapes can adopt upper and lower sidewall, and dislocation is relative each other on the upper and lower sawtooth top of zigzag cannelure.
Sucker rod deflection abrasion preventing centralizer of the present utility model, middle part around the pipe nipple sidewall is provided with a plurality of W shapes or the end to end guide chute of sinusoidal, upper and lower two end points places of guide chute have ∩ shape commutation groove or ∪ shape commutation groove respectively, distance between ∩ shape commutation groove or the ∪ shape commutation groove is corresponding with the stroke up and down of pipe nipple, the middle part of the sidewall of supporting positive cover radially is provided with at least one bearing pin locating hole, be provided with the pushing sleeve bearing pin in each bearing pin locating hole, section matches with guide chute respectively in each pushing sleeve bearing pin.In use, when the upper and lower motion of sucker rod, drive the upper and lower motion of pipe nipple, guide chute on the pipe nipple also can upper and lower thereupon motion, make each pushing sleeve bearing pin under the effect of guide chute sidewall, along continuous straight runs is made crankmotion around pipe nipple, make that thus supporting positive cover begins to do equidirectional rotatablely moving around pipe nipple, thereby can make supporting positive cover and tube inner wall uniform wear, prevented the eccentric wear of sucker rod and box cupling, and prolonged application life of supporting positive cover, also prolong the application life of oil pipe and sucker rod, and then prolonged the cycle of maintenance oil well.
Below in conjunction with accompanying drawing sucker rod deflection abrasion preventing centralizer of the present utility model is described further.
Description of drawings
Fig. 1 is the main pseudosection of the structural representation of sucker rod deflection abrasion preventing centralizer of the present utility model;
Fig. 2 is the structural representation of guide chute after launching;
Fig. 3 is the structural representation after another kind of guide chute launches.
The specific embodiment
By Fig. 1 and Fig. 2 as can be seen, sucker rod deflection abrasion preventing centralizer of the present utility model comprises pipe nipple 1, and pipe nipple 1 can be an overall structure, also can be to comprise screw thread pipeline section 7 and threaded rod section 8, and screw thread pipeline section 7 adopts screw threads to link to each other with threaded rod section 8.Be set with to matched in clearance supporting positive cover 2 on the sidewall of pipe nipple 1, the external surface of supporting positive cover 2 vertically is provided with the spiral flow channel of many upper and lower perforations, so that well liquid can be flow through.Be provided with the end to end guide chute 3 of a plurality of W shapes at middle part around pipe nipple 1 sidewall, distance between upper and lower two end points of guide chute 3 is corresponding with the stroke up and down of described pipe nipple 1, have respectively at upper and lower two end points places of guide chute 3 ∩ shape commutation groove 4 or ∪ shape commutation groove 4 ', the middle part of the sidewall of supporting positive cover 2 radially is provided with 4 bearing pin locating holes 5, be provided with pushing sleeve bearing pin 6 in each bearing pin locating hole 5, section matches with guide chute 3 respectively in each pushing sleeve bearing pin 6.When pushing sleeve bearing pin 6 when guide chute 3 slides, can be in ∩ shape commutation groove 4 or ∪ shape commutation groove 4 ' locate commutation.
As shown in Figure 3, it is that zigzag cannelure 10 replaces that the end to end guide chute 3 of above-mentioned a plurality of W shapes also can adopt upper and lower sidewall, and dislocation is relative each other on the upper and lower sawtooth top of zigzag cannelure 10.
The quantity of bearing pin locating hole 5 also can be 2-8, and the outer end in each bearing pin locating hole 5 is provided with stops up 9, and pushing sleeve bearing pin 6 and obstruction 9 are adopted to be threaded and be assemblied in the described bearing pin locating hole 5.Stopping up 9 adopts plastics or elastomeric material to make.
Sucker rod deflection abrasion preventing centralizer of the present utility model in use, on sucker rod, under when moving, drive on the pipe nipple 1, following motion, guide chute 3 on the pipe nipple 1 also can with on, following motion, make each pushing sleeve bearing pin 6 under the effect of guide chute 3 sidewalls, along continuous straight runs is done equidirectional rotatablely moving around pipe nipple 1, make that thus supporting positive cover 2 begins to do equidirectional rotatablely moving around pipe nipple 1, thereby can make supporting positive cover 1 and tube inner wall uniform wear, prevented the eccentric wear of sucker rod and box cupling, and prolonged application life of supporting positive cover 1, also prolong the application life of oil pipe and sucker rod, and then prolonged the cycle of maintenance oil well.
Embodiment recited above is described preferred implementation of the present utility model; be not that design of the present utility model and scope are limited; do not breaking away under the utility model design scheme prerequisite; common engineers and technicians make the technical solution of the utility model in this area various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.
Claims (6)
1. sucker rod deflection abrasion preventing centralizer, comprise pipe nipple (1), be set with to matched in clearance supporting positive cover (2) on the sidewall of pipe nipple (1), the external surface of supporting positive cover (2) vertically is provided with on many, the spiral flow channel of following perforation, it is characterized in that: the middle part around described pipe nipple (1) sidewall is provided with the end to end guide chutes of a plurality of W shapes (3), on the guide chute (3), distance between the lower end is corresponding with the stroke up and down of described pipe nipple (1), the middle part of the sidewall of described supporting positive cover (2) radially is provided with at least one bearing pin locating hole (5), be provided with pushing sleeve bearing pin (6) in each bearing pin locating hole (5), section matches with guide chute (3) respectively in each pushing sleeve bearing pin (6).
2. sucker rod deflection abrasion preventing centralizer according to claim 1, it is characterized in that: upper and lower two end points places of described guide chute (3) have ∩ shape commutation groove (4) or ∪ shape commutation groove (4 ') respectively, the quantity of described bearing pin locating hole (5) is 2-8, and the outer end in each bearing pin locating hole (5) is provided with obstruction (9).
3. sucker rod deflection abrasion preventing centralizer according to claim 2 is characterized in that: described pushing sleeve bearing pin (6) and described obstruction (9) are adopted to be threaded and are assemblied in the described bearing pin locating hole (5).
4. sucker rod deflection abrasion preventing centralizer according to claim 3 is characterized in that: described pipe nipple (1) comprises screw thread pipeline section (7) and threaded rod section (8), and screw thread pipeline section (7) adopts screw thread to link to each other with threaded rod section (8).
5. according to any one described sucker rod deflection abrasion preventing centralizer in the claim 1 to 4, it is characterized in that: described obstruction (9) adopts plastics or elastomeric material to make.
6. sucker rod deflection abrasion preventing centralizer according to claim 1, it is characterized in that: it is that zigzag cannelure (10) replaces that the described end to end guide chutes of a plurality of W shapes (3) can adopt upper and lower sidewall, and dislocation is relative each other on the upper and lower sawtooth top of zigzag cannelure (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420115612 CN2758448Y (en) | 2004-11-16 | 2004-11-16 | Anti offset grinding centralizer of oilo pumping rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420115612 CN2758448Y (en) | 2004-11-16 | 2004-11-16 | Anti offset grinding centralizer of oilo pumping rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2758448Y true CN2758448Y (en) | 2006-02-15 |
Family
ID=36078590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420115612 Expired - Fee Related CN2758448Y (en) | 2004-11-16 | 2004-11-16 | Anti offset grinding centralizer of oilo pumping rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2758448Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622870A (en) * | 2021-09-07 | 2021-11-09 | 正弦科技有限公司 | Multifunctional pumping-aid yield increasing device for oil well |
| CN117948394A (en) * | 2024-03-27 | 2024-04-30 | 兰州矿场机械有限公司 | Transmission structure of fracturing pump and fracturing pump |
-
2004
- 2004-11-16 CN CN 200420115612 patent/CN2758448Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622870A (en) * | 2021-09-07 | 2021-11-09 | 正弦科技有限公司 | Multifunctional pumping-aid yield increasing device for oil well |
| CN113622870B (en) * | 2021-09-07 | 2022-04-12 | 正弦科技有限公司 | Multifunctional pumping-aid yield increasing device for oil well |
| CN117948394A (en) * | 2024-03-27 | 2024-04-30 | 兰州矿场机械有限公司 | Transmission structure of fracturing pump and fracturing pump |
| CN117948394B (en) * | 2024-03-27 | 2024-05-28 | 兰州矿场机械有限公司 | Transmission structure of fracturing pump and fracturing pump |
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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 |