CN2871799Y - Magnetic-stabilized carbon fibre unit against eccentric abrasion - Google Patents
Magnetic-stabilized carbon fibre unit against eccentric abrasion Download PDFInfo
- Publication number
- CN2871799Y CN2871799Y CN 200520085115 CN200520085115U CN2871799Y CN 2871799 Y CN2871799 Y CN 2871799Y CN 200520085115 CN200520085115 CN 200520085115 CN 200520085115 U CN200520085115 U CN 200520085115U CN 2871799 Y CN2871799 Y CN 2871799Y
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- sucker rod
- utility
- model
- shaft sleeve
- groove
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Abstract
The utility model relates to a magnetic force centralizing carbon fiber anti-eccentric wear device, which comprises a hoop (1), a back cap (2), a sucker rod (7) connected with the back cap (2) as well as the lower joint (8). The utility model is characterized in that: a shaft sleeve (6) is arranged on the outside of sucker rod (7), an external wall of the shaft sleeve (6) is provided with a groove, a bulged support block (5) matching with the groove is arranged in the groove, a magnet (4) is positioned in a support block, the support block (5) and the shaft sleeve (6) are fixed via a locking cap (3). The utility model is characterized in that: when the utility model is positioned on preset position in oil pipe, under suction force of one-way suction magnet, the magnet and the support block are extended out together and sucked on inner wall of oil pipe, therefore an anti-eccentric wear device can be positioned in certain position of oil pipe, while the sucker rod is positioned in the middle of the shaft sleeve in the utility model and rubbed uniformly with the shaft sleeve, thereby overcoming the defects in fixed type prior art such as large frictional resistance of centralizer and short service life etc.
Description
One, technical field: the utility model relates to a kind of sucker rod and sets upright anti-eccentric wear device, especially relates to a kind of magnetic force and sets upright the anti-eccentric wear device of carbon fiber.
Two, background technology: rod string is that oil pumping system gets important driving member, it also is one of weak link in the rod pumping system, at present in the oil pumping system, rod string contacts the eccentric wear phenomenon that causes with oil pipe serious unusually, because the deflection of well, sucker rod inevitably contacts with oil pipe, cause eccentric wear, the suffered resistance obstruction sucker rod of oil pump plunger piston moves downward during down stroke, therefore, sucker rod bottom roofbolt also bears the effect of drawing-pressing varying load except that bearing La-La varying load, condition of work is very abominable, cause the eccentric wear phenomenon aggravation of sucker rod bottom and oil pipe, the eccentric wear speed of sucker rod has also been accelerated in the variation of output fluidity matter, and crude oil water content is high more, original greasy property is also low more, the eccentric wear phenomenon is serious more, and the intensity that this has not only reduced sucker rod causes the sucker rod partial wear fracture, but also the worn out oil pipe of meeting causes the oil pipe leakage.
Some centralizers of Shi Yonging had produced some useful effects in the past, but also had some problems.Though steel roller type deflection abrasion preventing centralizer has certain anti-eccentric wear effect, principle is also very simple, fully by the rolling of three groups of rollers and the anti-eccentric wear of the realization of sliding, but roller shaft is easy to grind away, cause the accident of card sucker rod, influenced the ordinary production of oil well simultaneously, therefore, the use amount of this centralizer is very little, basic not popularization.Steel ball-type deflection abrasion preventing centralizer is to have done improvement on the structure of above-mentioned steel roller type deflection abrasion preventing centralizer, overcome the easily broken problem of roller of above-mentioned centralizer, prolonged within a certain period of time and set upright period of validity, but along with the prolongation of period of validity, occur new problem again, promptly ball grooves is worn away, ball is scattered, centralizer lost efficacy, and also may cause the accident of card sucker rod, holddown simultaneously, so this centralizer popularization face at the scene is also very little.The nylon centralizer is on the basis of steel centralizer; changed material; mounting means normally is fixed on the sucker rod or is manufactured on the rod collar; its advantage is to sacrifice nylon protection oil pipe, scuff resistance height; but shortcoming is this centralizer owing to be that the nylon relative fixed is on sucker rod; therefore nylon and oil pipe relative motion friction, particularly relevant joint is to the nylon serious wear.
Three, summary of the invention: the purpose of this utility model is exactly the defective that exists at prior art, provide a kind of and have that sucker rod is set upright, anti-eccentric wear effect, and the novel magnetic force that can be used for straight well and inclined shaft is set upright the anti-eccentric wear device of carbon fiber.
Its technical scheme is: the sucker rod (7) and the lower contact (8) that comprise box cupling (1), carry on the back cap (2), be connected with back of the body cap (2), it is characterized in that: be with axle sleeve (6) in sucker rod (7) outside, axle sleeve (6) outer wall is provided with groove, in described groove, be provided with back-up block (5) with the band projection of groove fit, back-up block is built-in with magnet (4), and described back-up block (5) and axle sleeve (6) are fixed by locking cap (3).
Wherein, the bow-shaped structural of back-up block (5) intermediate projections, feet at two ends (9) and locking cap (3) snap fit.
Effect of the present utility model is: axle sleeve contacts with sucker rod, can endwisely slip, locking cap couples together back-up block and axle sleeve, magnet is packed in the back-up block, making piece can radially shrink or stretch out, after the utility model is lowered to the oil pipe precalculated position, under the suction of unidirectional suction magnet, magnet is overhanging with back-up block, suction is at tube inner wall, the a certain position that can make anti-eccentric wear device be stabilized in oil pipe is motionless, and sucker rod is centered in the axle sleeve of the present utility model and axle sleeve evenly rubs, and sucker rod can reciprocatingly slide in axle sleeve freely relatively, and it is big to have overcome fixed centralizer frictional resistance of the prior art, deficiencies such as application life is short.
Four, description of drawings:
Accompanying drawing is the figure that partly cuts open of the present utility model.
Five, the specific embodiment:
In conjunction with the accompanying drawings, the utility model will be further described:
Its technical scheme is: the sucker rod 7 and the lower contact 8 that comprise box cupling 1, carry on the back cap 2, be connected with back of the body cap 2, wherein, be with axle sleeve 6 in sucker rod 7 outsides, axle sleeve 6 outer walls are provided with groove, in described groove, be provided with back-up block 5 with the band projection of groove fit, back-up block is built-in with magnet 4, and described back-up block 5 and axle sleeve 6 are fixed by locking cap 3.Wherein, the bow-shaped structural of back-up block 5 intermediate projections, the feet 9 and locking cap 3 snap fit at two ends.
Operating principle is that axle sleeve 6 contacts with sucker rod 7, can endwisely slip, locking cap 3 couples together back-up block 5 and axle sleeve 6, magnet 4 is packed in the back-up block 5, back-up block 5 can radially shrink or stretch out with magnet 4, after the utility model is lowered to the oil pipe precalculated position, under the suction of unidirectional suction magnet 4, magnet is overhanging with back-up block, suction is at tube inner wall, the a certain position that can make anti-eccentric wear device be stabilized in oil pipe is motionless, and sucker rod is placed in the middle, and friction of motion is occurred over just between sucker rod and the axle sleeve; In axle sleeve of the present utility model, evenly rub, and sucker rod can reciprocatingly slide in axle sleeve freely relatively, overcome deficiencies such as fixed centralizer frictional resistance of the prior art is big, application life is short with axle sleeve.
The utility model bottom bracket axle adopts carbon fiber manufacturing wear-resistant and the anti-attrition function admirable, and axle sleeve is close with the sucker rod size, and it is big that it locates area indirectly, and the rate of wear is little.
Claims (2)
1, a kind of magnetic force is set upright the anti-eccentric wear device of carbon fiber, the sucker rod (7) and the lower contact (8) that comprise box cupling (1), carry on the back cap (2), be connected with back of the body cap (2), it is characterized in that: be with axle sleeve (6) in sucker rod (7) outside, axle sleeve (6) outer wall is provided with groove, in described groove, be provided with back-up block (5) with the band projection of groove fit, back-up block is built-in with magnet (4), and described back-up block (5) and axle sleeve (6) are fixed by locking cap (3).
2, magnetic force according to claim 1 is set upright the anti-eccentric wear device of carbon fiber, it is characterized in that: the bow-shaped structural of described back-up block (5) intermediate projections, feet at two ends (9) and locking cap (3) snap fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520085115 CN2871799Y (en) | 2005-07-05 | 2005-07-05 | Magnetic-stabilized carbon fibre unit against eccentric abrasion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520085115 CN2871799Y (en) | 2005-07-05 | 2005-07-05 | Magnetic-stabilized carbon fibre unit against eccentric abrasion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2871799Y true CN2871799Y (en) | 2007-02-21 |
Family
ID=37740145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520085115 Expired - Fee Related CN2871799Y (en) | 2005-07-05 | 2005-07-05 | Magnetic-stabilized carbon fibre unit against eccentric abrasion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2871799Y (en) |
Cited By (3)
| 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 |
| CN105781444A (en) * | 2016-04-29 | 2016-07-20 | 中国石油大学(北京) | Torque reducing and resistance reducing stabilizer |
| CN109736726A (en) * | 2019-01-11 | 2019-05-10 | 东北石油大学 | Sucker rod anticreep eccentric abrasion prevention device |
-
2005
- 2005-07-05 CN CN 200520085115 patent/CN2871799Y/en not_active Expired - Fee Related
Cited By (5)
| 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 |
| CN105781444A (en) * | 2016-04-29 | 2016-07-20 | 中国石油大学(北京) | Torque reducing and resistance reducing stabilizer |
| CN105781444B (en) * | 2016-04-29 | 2018-06-29 | 中国石油大学(北京) | One kind subtracts torsion drop resistance stabilizer |
| CN109736726A (en) * | 2019-01-11 | 2019-05-10 | 东北石油大学 | Sucker rod anticreep eccentric abrasion prevention device |
| CN109736726B (en) * | 2019-01-11 | 2023-12-22 | 东北石油大学 | Anti-drop and anti-eccentric wear device for sucker rod |
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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 |