CN200949425Y - Eccentrically wearing-resistant collar for screw bearing sucker rod - Google Patents
Eccentrically wearing-resistant collar for screw bearing sucker rod Download PDFInfo
- Publication number
- CN200949425Y CN200949425Y CN 200620009669 CN200620009669U CN200949425Y CN 200949425 Y CN200949425 Y CN 200949425Y CN 200620009669 CN200620009669 CN 200620009669 CN 200620009669 U CN200620009669 U CN 200620009669U CN 200949425 Y CN200949425 Y CN 200949425Y
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- Prior art keywords
- sucker rod
- hole
- oil
- marble
- ball
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model provides an eccentric wear prevention spiral bearing sucker rod collar, belongs to a sucker rod part which is used for oil extraction on oil field, and comprises a collar body. A sucker rod connecting screw hole and another sucker rod connecting screw hole are respectively arranged on the upper and lower ends of the collar body. A marble hole is arranged on the center part of the collar body. A marble assembling groove hole is arranged on the outer surface of the collar body. The upper and lower ends of the marble hole are respectively connected with the marble assembling groove hole via transverse connecting body. A plurality of marbles are arranged in the marble hole, marble arranging groove hole and connecting hole. When the collar is used, the marbles contact the inner wall of the oil tube. The friction between the marbles and the oil tube is rolling friction. As the rolling friction coefficient is much lower than the sliding friction coefficient, thus the wear is effectively reduced and good centralizing function is realized. The utility model is provided with good eccentric wear prevention effect, improves the working life of the oil tube and sucker rod, the oil extraction time rate of an oil wall, and prolongs the non-maintenance period of an oil wall.
Description
Technical field
The utility model provides a kind of oil field to recover the oil with the parts on the sucker rod, especially a kind of improved box cupling.
Background technology
Extensively adopt oil pumper sucker rod pumping mode in the oil exploitation process.Sucker rod is installed in the oil pipe of down-hole, moves up and down under the drive of oil pumper on the ground, and the crude oil that the oil well pump of down-hole is pumped is evacuated to ground.Because oil well is darker, sucker rod has more piece, links together by box cupling between each joint.Rod sag or tubing bending because of hole deviation causes all can cause the friction of sucker rod and tube inner wall, and this is called eccentric wear.Especially box cupling fracture, dropout because of external diameter is rubbed at first greater than sucker rod, thereby are caused in the box cupling position, make the following sucker rod of box cupling of fracture place fall into the down-hole.At this moment, must carry out workover treatment, this can cause the reduction of economic loss and oil well output.Used anti-eccentric wear device adopts the sliding friction parts to reach anti-eccentric wear purpose mostly at present, and is big with the contact area of tube inner wall, and after use was long-time, the sliding friction parts can damage because of friction.The anti-eccentric wear device that adopts roller is also arranged, and it is installed roller by mandrel and makes on the box cupling body, less with the contact area of tube inner wall.After roller and mandrel damage because of wearing and tearing, stuck phenomenon can appear under the external force effect of roller when oil pumping, and not only no longer rotate, and can produce even more serious friction to tube inner wall because of contact area is little.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of anti-eccentric wear screw bearing rod collar, to improve anti-eccentric wear effect.
The utility model is to realize like this, anti-eccentric wear screw bearing rod collar, it has the box cupling body, box cupling body upper and lower end has sucker rod connection screw to be connected screw with another sucker rod respectively, there is ball hole at middle part at described box cupling body, external surface at the box cupling body has spiral ball that slotted eye is installed, the upper and lower end of ball hole is installed slotted eye by horizontal intercommunicating pore and ball respectively and is connected together, ball hole, ball are installed in slotted eye, the intercommunicating pore a plurality of balls, and ball hole is connected with sucker rod in the box cupling body between the screw nut is installed.
Adopt the anti-eccentric wear screw bearing rod collar of said structure, in use, contact with tube inner wall by ball, be rolling friction between ball and the tube inner wall,, therefore alleviated wearing and tearing because the friction factor of rolling friction is significantly less than sliding friction, and played good centralizing function, anti-eccentric wear is effective, and rate during the oil recovery that improved application life of oil pipe, sucker rod and oil well has prolonged being excused from a college course the phase of oil well.
Description of drawings
Fig. 1 is the schematic diagram of the utility model structure.
Fig. 2 is the vertical view of Fig. 1.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing illustrates concrete structure of the present utility model.
As shown in drawings, the anti-eccentric wear screw bearing rod collar of the utility model, it has box cupling body (3), on the box cupling body, the lower end has sucker rod connection screw (1) to be connected screw (7) with another sucker rod respectively, at the middle part of described box cupling body (3) ball hole (5) is arranged, external surface at the box cupling body has spiral ball that slotted eye (4) is installed, on the ball hole, the lower end is installed slotted eye by horizontal intercommunicating pore (8) and ball respectively and is connected together, ball hole, ball is installed slotted eye, a plurality of balls (6) are arranged in the intercommunicating pore, and ball hole is connected with sucker rod in the box cupling body between the screw (1) nut (2) is installed.
Ball can be a steel ball.
When ball is installed, can back out nut (2), ball be connected screw (1) through sucker rod send in ball hole, ball installation slotted eye, the intercommunicating pore.The spiral ball of box cupling external surface is installed the aperture of slotted eye (4), should be slightly less than the diameter of ball, in case ball spills.
During use, this box cupling is connected screw (7) by the sucker rod connection screw (1) of its box cupling body upper and lower end with another sucker rod, the lower end of the threaded last joint sucker rod of external surface, the upper end of next joint sucker rod are linked together, thereby realize that two save the connection of sucker rods.In the process that moves up and down of sucker rod, ball contacts with pipe inner surface, and ball rotates, and under friction, each ball is installed in slotted eye, the intercommunicating pore and moved at ball hole, ball, and its motion forms closed track.When sucker rod rose, ball was installed slotted eye along ball and is moved downward, and when sucker rod descended, ball was installed slotted eye along ball and moved upward.
Claims (1)
1, anti-eccentric wear screw bearing rod collar, it is characterized in that, it has box cupling body (3), on the box cupling body, the lower end has sucker rod connection screw (1) to be connected screw (7) with another sucker rod respectively, at the middle part of described box cupling body (3) ball hole (5) is arranged, external surface at the box cupling body has spiral ball that slotted eye (4) is installed, on the ball hole, the lower end is installed slotted eye by horizontal intercommunicating pore (8) and ball respectively and is connected together, ball hole, ball is installed slotted eye, a plurality of balls (6) are arranged in the intercommunicating pore, and ball hole is connected with sucker rod in the box cupling body between the screw (1) nut (2) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620009669 CN200949425Y (en) | 2006-09-03 | 2006-09-03 | Eccentrically wearing-resistant collar for screw bearing sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620009669 CN200949425Y (en) | 2006-09-03 | 2006-09-03 | Eccentrically wearing-resistant collar for screw bearing sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200949425Y true CN200949425Y (en) | 2007-09-19 |
Family
ID=38891968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620009669 Expired - Fee Related CN200949425Y (en) | 2006-09-03 | 2006-09-03 | Eccentrically wearing-resistant collar for screw bearing sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200949425Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334704A (en) * | 2013-06-27 | 2013-10-02 | 济源市石油机械有限公司 | Rolling type eccentric wear preventing coupling capable of realizing rotation and revolution for sucker rod |
-
2006
- 2006-09-03 CN CN 200620009669 patent/CN200949425Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334704A (en) * | 2013-06-27 | 2013-10-02 | 济源市石油机械有限公司 | Rolling type eccentric wear preventing coupling capable of realizing rotation and revolution for sucker rod |
| CN103334704B (en) * | 2013-06-27 | 2015-12-09 | 济源市石油机械有限公司 | Can rotation can to revolve round the sun tumbling-type Anti-eccentric wear coupling of 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 |