CN1814984A - Internal-rolling sucker rod centralizer - Google Patents
Internal-rolling sucker rod centralizer Download PDFInfo
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- CN1814984A CN1814984A CN 200610042383 CN200610042383A CN1814984A CN 1814984 A CN1814984 A CN 1814984A CN 200610042383 CN200610042383 CN 200610042383 CN 200610042383 A CN200610042383 A CN 200610042383A CN 1814984 A CN1814984 A CN 1814984A
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- sucker rod
- matrix
- raceway
- rolling element
- groove
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Abstract
An inner rolling sucker rod centralizer mainly solves rod duct eccentric wear in oil recovery process and centralizer installation reliability. It contains columnar shape basal body and inner rolling body set on basal body, it featuring said basal body located between sucker rod and oil tube, inner rolling element in plurality of ball track of basal body hung over roller track and contacting with sucker rod outer wall, basal body consisting of two parts along axial direction and having overflowing trough paralleled with sucker rod axial line. Said invention is easy installation with low coat and fine reliability, reducing frictional wear, reducing oil recovery dissipation of energy, preventing rod duct eccentric wear and prolonging oil well service life.
Description
Technical field
The present invention relates to a kind of oil pumping rod centering device, especially internal-rolling sucker rod centralizer.
Background technology
Centralizer is used for the centralizing of sucker rod, and to reducing the friction of sucker rod and tube inner wall, reduces the resistance of motion of sucker rod, the minimizing maintenance cost, and energy conservation plays an important role.
Existing centralizer is slidingtype, roller type and outer rolling formula, slidingtype and roller type life-span are shorter, outer rolling formula such as Chinese patent application 01268721 disclosed tumbling-type oil pumping rod centering device, the technical scheme that it is taked is: centralizer is connected box cupling place, sucker rod end, there is arc raceway in the centralizer outside, place rolling element in the raceway, rolling element protrudes centralizer and forms rolling pair with the oil pumping tube wall.This kind structure cooperates the effect that centralizes that realizes sucker rod by spheroid with the some face of tube inner wall, reduced the resistance of sliding friction simultaneously, has certain good effect.But the defective that this tumbling-type is taken out the existence of bar centralizer is: (1) installs inconvenience, and it being threaded between two sucker rods by two ends, for oil well just aborning, sucker rod must be taken apart could install, and the erection procedure complexity, the set-up time is long.(2) poor reliability owing to the installation of centralizer, has increased the tie point of sucker rod system, and rate of breakdown is increased, and simultaneously, tube wall is thinner, and hardness is extremely low, easy worn out tube wall.(3) centralizer bears bigger load, must improve the material property of centralizer, has increased manufacturing cost.
Summary of the invention
In order to overcome the shortcoming that above-mentioned prior art exists, the object of the present invention is to provide a kind of internal-rolling sucker rod centralizer, it is easy to install, low, the good reliability of cost.
Technical scheme of the present invention is, this internal-rolling sucker rod centralizer, comprise columnar shape basal and be arranged on the interior rolling element of matrix, it is characterized in that described matrix is between sucker rod and tube inner wall, being arranged on rolling element in the inboard a plurality of raceway grooves of matrix, partly to protrude in the raceway groove outer and contact with the sucker rod outer wall, matrix radially is made up of two parts, its joint portion one side is hinged, and the opposite side overlap joint also is provided with disconnecting prevention structure, is provided with the axis excessively chute parallel with the sucker rod axis on matrix.During installation, two parts of opening matrix are the tiger shape, and holding is at the suitable position of sucker rod, and the fastening of two parts overlap joint is very convenient then.Former sucker rod system be need not any change.
Aforementioned raceway groove can be a plurality of spherical grooves that are provided with along the matrix medial surface, also strip groove.The size of notch is less than the diameter of rolling element.The relative strip groove of spherical groove processing technology is complicated.For strip groove, the matrix inboard is provided with a plurality of axis raceway groove parallel with the sucker rod axis, is provided with a plurality of rolling elements in the groove side by side, and the two-port of groove is provided with the rolling element position limiting structure.
Because it is bigger that sucker rod bears load in the course of the work, and, wearing and tearing, seriously corroded, centralizer must have comprehensive mechanical performance preferably, means that centralizer should use material preferably, thereby causes the high problem of cost.In order to address this problem, in the raceway groove of matrix, be provided with the raceway that cooperates with raceway groove inwall, rolling element is arranged in the arc raceway of raceway and freely rolls, it is stifled or pressing plate is spacing to rolling element by plug that the arc groove of raceway upper end connects the top, and the lower end forms the rolling element ball seat.Like this, only need just passable to raceway material important requirement.
For making matrix two parts have globality preferably, described disconnecting prevention structure is to be provided with the mousing-hook that matches in matrix lap-joint.Also can adopt the latch anticreep.
The invention has the beneficial effects as follows:
1, reduces friction factor greatly, effectively administered the eccentric wear of sucker rod and oil pipe, prolonged the life-span of sucker rod and oil pipe, reduced energy consumption.
2, matrix is made of two parts, and former sucker rod system be need not any change, installs very conveniently, has improved operating efficiency, and this is the outstanding feature of this programme.
3, owing to be provided with raceway, only need are just passable to raceway material important requirement, thereby reduced the material requirement of matrix, reduced whole cost.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in further detail.
Fig. 1 is the section structure schematic diagram of the present invention's assembling;
Fig. 2 is the front view of raceway;
Fig. 3 is the vertical view of Fig. 2.
Among the figure: 1. matrix, 2. raceway, 3. rolling element, 4. sucker rod, 5. oil pipe.
The specific embodiment
As roll type oil pumping rod centering device in Fig. 1, comprise matrix 1, raceway 2 and rolling element 3.
Be provided with the axis excessively chute parallel with the sucker rod axis on the matrix outside, crossing chute is four, is the path of oil.Crossing the quantity of chute can come to determine as required.
Claims (4)
1, a kind of internal-rolling sucker rod centralizer, comprise columnar shape basal and be arranged on the interior rolling element of matrix, it is characterized in that, described matrix is between sucker rod and tube inner wall, being arranged on rolling element in the inboard a plurality of raceway grooves of matrix, partly to protrude in the raceway groove outer and contact with the sucker rod outer wall, and matrix radially is made up of two parts, and its joint portion one side is hinged, the opposite side overlap joint also is provided with disconnecting prevention structure, is provided with the axis excessively chute parallel with the sucker rod axis on matrix.
2, a kind of interior roll type oil pumping rod centering device according to claim 1 is characterized in that the matrix inboard is provided with a plurality of axis raceway groove parallel with the sucker rod axis, is provided with a plurality of rolling elements in the groove side by side, and the two-port of groove is provided with the rolling element position limiting structure.
3, a kind of interior roll type oil pumping rod centering device according to claim 2, it is characterized in that, in the raceway groove of matrix, be provided with the raceway that cooperates with raceway groove inwall, rolling element is arranged in the arc groove of raceway and freely rolls, it is stifled or pressing plate is spacing to rolling element by plug that the arc groove of raceway upper end connects the top, and the lower end forms the rolling element ball seat.
4, a kind of interior roll type oil pumping rod centering device according to claim 1 is characterized in that described disconnecting prevention structure is to be provided with the mousing-hook that matches in matrix lap-joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610042383 CN1814984A (en) | 2006-02-21 | 2006-02-21 | Internal-rolling sucker rod centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610042383 CN1814984A (en) | 2006-02-21 | 2006-02-21 | Internal-rolling sucker rod centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1814984A true CN1814984A (en) | 2006-08-09 |
Family
ID=36907325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610042383 Pending CN1814984A (en) | 2006-02-21 | 2006-02-21 | Internal-rolling sucker rod centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1814984A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089169A (en) * | 2013-01-24 | 2013-05-08 | 江苏省无锡探矿机械总厂有限公司 | Opening and closing type drilling tool centralizing device |
| CN103643903A (en) * | 2013-12-03 | 2014-03-19 | 中国石油天然气股份有限公司 | Inside and outside centering guide for well repair in oil field |
| CN107747478A (en) * | 2017-10-24 | 2018-03-02 | 山东大学 | A kind of pulley structure composite oil pumping rod centering device |
| CN108612490A (en) * | 2016-12-12 | 2018-10-02 | 四川煜天石油机械设备有限公司 | A kind of oil pumping pipeline rotary centralizer |
| CN112227981A (en) * | 2020-11-11 | 2021-01-15 | 徐海英 | Carbon fiber sucker rod centralizer |
-
2006
- 2006-02-21 CN CN 200610042383 patent/CN1814984A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089169A (en) * | 2013-01-24 | 2013-05-08 | 江苏省无锡探矿机械总厂有限公司 | Opening and closing type drilling tool centralizing device |
| CN103643903A (en) * | 2013-12-03 | 2014-03-19 | 中国石油天然气股份有限公司 | Inside and outside centering guide for well repair in oil field |
| CN108612490A (en) * | 2016-12-12 | 2018-10-02 | 四川煜天石油机械设备有限公司 | A kind of oil pumping pipeline rotary centralizer |
| CN107747478A (en) * | 2017-10-24 | 2018-03-02 | 山东大学 | A kind of pulley structure composite oil pumping rod centering device |
| CN107747478B (en) * | 2017-10-24 | 2023-10-20 | 山东大学 | Composite sucker rod centralizer with pulley structure |
| CN112227981A (en) * | 2020-11-11 | 2021-01-15 | 徐海英 | Carbon fiber sucker rod centralizer |
| CN112227981B (en) * | 2020-11-11 | 2021-07-13 | 徐海英 | Carbon fiber sucker rod centralizer |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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