CN202990901U - Anti-eccentric wear rotatable type oil sucker rod coupling - Google Patents
Anti-eccentric wear rotatable type oil sucker rod coupling Download PDFInfo
- Publication number
- CN202990901U CN202990901U CN 201320055723 CN201320055723U CN202990901U CN 202990901 U CN202990901 U CN 202990901U CN 201320055723 CN201320055723 CN 201320055723 CN 201320055723 U CN201320055723 U CN 201320055723U CN 202990901 U CN202990901 U CN 202990901U
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- CN
- China
- Prior art keywords
- sucker rod
- connector
- rod
- box cupling
- cover
- 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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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
An anti-eccentric wear rotatable type oil sucker rod coupling comprises an upper oil sucker rod connector, a coupling sleeve, a turntable type bearing, an oil communication groove, a base and a lower oil sucker rod connector. The anti-eccentric wear rotatable type oil sucker rod coupling is characterized in that the upper oil suction rod connector and the lower oil sucker rod connector are T-shaped, a female threaded connector which is connected with an oil sucker rod is arranged in the vertical center of the two connectors, the turntable type bearing is horizontally arranged at two sides of the female threaded connector of the two connectors, the coupling sleeve is sleeved on the upper sucker oil rod connector and the lower oil sucker rod connector, the upper oil sucker rod connector and the lower oil sucker rod connector are connected into a whole through the base and the coupling sleeve in a threaded mode, a loading reinforced screw is arranged between the coupling sleeve and the base, a gap is reserved between the upper oil sucker rod connector and the lower oil sucker rod connector, and a gap is reserved between the lower oil sucker rod connector and the coupling sleeve.
Description
Technical field
The utility model relates to the turnable rod collar of anti-eccentric wear that a kind of oilfield pumping well is used, and solves the problem of pumping rod disengaging and eccentrically worn tubing.
Background technology
At present being connected between the sucker rod of pumpingh well and sucker rod is non-rotatable connection.The telescopic variation that causes due to the variation of sucker rod roofbolt load in the running of up and down and the bending of tubing string, cause producing between sucker rod very large moment of torsion, force rod sag thread off or sucker rod is twisted off, especially this phenomenon often occurs in heavy oil wells, the hardness of the hardness ratio oil pipe of present sucker rod is large in addition, and is often worn out oil pipe in the process of its variation, makes oil well pump return stream, crude oil can not taken out ground, has a strong impact on the normal production in oil field.
Summary of the invention
The purpose of this utility model is to provide the turnable rod collar of a kind of anti-eccentric wear, solves the defective that above-mentioned prior art exists.
The technical solution of the utility model is achieved in the following ways:
The utility model comprises rod connector, box cupling cover, rotating disc type bearing, logical oil groove, base and sucker rod lower contact, it is characterized in that rod connector and lower sucker rod joint are made as T-shaped, be provided with the box thread connector that is connected with sucker rod at the vertical center of two joints, both sides at the box thread connector of two joints transversely are provided with the rotating disc type bearing, the box cupling cover is enclosed within on rod connector and lower sucker rod joint, threadably upper rod connector and lower sucker rod joint is integrally connected by base and box cupling cover; Be provided with load between box cupling cover and base and strengthen screw; Between upper rod connector and lower sucker rod joint and on rod connector and lower sucker rod joint leave the gap between overlapping with box cupling.
The box cupling cover is made as spill, adopt hardness to make lower than the stainless steel material of oil pipe hardness, central part is provided with the rod connector hole, open end is provided with box thread, be provided with screw hole in the middle part of thread segment, upper end and the bottom periphery of box cupling cover are made as circular arc, are provided with logical oil groove in box cupling cover periphery, and the external diameter of box cupling cover is less than the internal diameter of oil pipe.
Base is made as cylindrical, and central part is provided with the lower sucker rod nipple orifice, and periphery is provided with male thread, is provided with the corresponding screw hole of screw hole that puts with box cupling in the male thread section.
Compared with the prior art the utility model has the following advantages:
1, the sucker rod by upper rod connector and rod connector can freely rotate separately, has prevented the sucker rod roofbolt in the situation that the concentrating of bending torsional forces, thereby has prevented rod parting and dropout.
2, the box cupling cover has adopted hardness to make lower than the stainless steel material of oil pipe hardness, can not injure oil pipe when centering sucker rod.
Description of drawings
Fig. 1-the utility model structural representation;
The upper rod connector of 1-in figure, 2-box cupling cover, 3-rotating disc type bearing, 4-leads to oil groove, the 5-base, 6-load is strengthened screw, 7-lower sucker rod joint.
The specific embodiment
For further disclosing the technical solution of the utility model, elaborate by embodiment below in conjunction with Figure of description:
The utility model comprises rod connector 1, box cupling cover 2, rotating disc type bearing 3, logical oil groove 4, base 5 and lower sucker rod joint 7, it is characterized in that rod connector 1 and lower sucker rod joint 7 are made as T-shaped, be provided with the box thread connector that is connected with sucker rod at the vertical center of two joints, both sides at the box thread connector of two joints transversely are provided with rotating disc type bearing 3, box cupling cover 2 is enclosed within on rod connector 1 and lower sucker rod joint 7, threadably upper rod connector 1 and lower sucker rod joint 7 is integrally connected by base 5 and box cupling cover 2; Be provided with load between box cupling cover 2 and base 5 and strengthen screw 6; Between upper rod connector 1 and lower sucker rod joint 7 and on rod connector 1 and lower sucker rod joint 7 leave the gap between overlapping 2 with box cupling.
When using the utility model, connect in the sucker rod roofbolt, when the up firm bearing load of sucker rod roofbolt, the sucker rod roofbolt becomes elongation by contraction, is become by bending and stretches, and the moment of torsion that produces is cracked in the mode of rotating by the utility model, prevent pumping rod disengaging and disconnected taking off, simultaneously in the situation that centering sucker rod because the hardness ratio oil pipe hardness of box cupling cover is soft, has prevented worn out oil pipe.In the situation that box cupling cover external diameter is less and be provided with logical oil groove than pipe aperture, do not hinder oil stream and rise, guaranteed that oil pumper load does not increase, and has guaranteed the normal operation of oil pumper.
Claims (3)
1. turnable rod collar of anti-eccentric wear, comprise rod connector, box cupling cover, rotating disc type bearing, logical oil groove, base and sucker rod lower contact, it is characterized in that rod connector and lower sucker rod joint are made as T-shaped, be provided with the box thread connector that is connected with sucker rod at the vertical center of two joints, both sides at the box thread connector of two joints transversely are provided with the rotating disc type bearing, the box cupling cover is enclosed within on rod connector and lower sucker rod joint, threadably upper rod connector and lower sucker rod joint is integrally connected by base and box cupling cover; Be provided with load between box cupling cover and base and strengthen screw; Between upper rod connector and lower sucker rod joint and on rod connector and lower sucker rod joint leave the gap between overlapping with box cupling.
2. the turnable rod collar of anti-eccentric wear according to claim 1, it is characterized in that: the box cupling cover is made as spill, adopt hardness to make lower than the stainless steel material of oil pipe hardness, central part is provided with the rod connector hole, open end is provided with box thread, is provided with screw hole in the middle part of thread segment, and upper end and the bottom periphery of box cupling cover are made as circular arc, be provided with logical oil groove in box cupling cover periphery, the external diameter of box cupling cover is less than the internal diameter of oil pipe.
3. the turnable rod collar of anti-eccentric wear according to claim 1, it is characterized in that: base is made as cylindrical, central part is provided with the lower sucker rod nipple orifice, and periphery is provided with male thread, is provided with the corresponding screw hole of screw hole that puts with box cupling in the male thread section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320055723 CN202990901U (en) | 2013-01-05 | 2013-01-05 | Anti-eccentric wear rotatable type oil sucker rod coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320055723 CN202990901U (en) | 2013-01-05 | 2013-01-05 | Anti-eccentric wear rotatable type oil sucker rod coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202990901U true CN202990901U (en) | 2013-06-12 |
Family
ID=48562092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320055723 Expired - Fee Related CN202990901U (en) | 2013-01-05 | 2013-01-05 | Anti-eccentric wear rotatable type oil sucker rod coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202990901U (en) |
-
2013
- 2013-01-05 CN CN 201320055723 patent/CN202990901U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20140105 |