CN202140041U - Sucker rod centering device - Google Patents
Sucker rod centering device Download PDFInfo
- Publication number
- CN202140041U CN202140041U CN201120258589U CN201120258589U CN202140041U CN 202140041 U CN202140041 U CN 202140041U CN 201120258589 U CN201120258589 U CN 201120258589U CN 201120258589 U CN201120258589 U CN 201120258589U CN 202140041 U CN202140041 U CN 202140041U
- Authority
- CN
- China
- Prior art keywords
- sucker rod
- oil pipe
- connecting rod
- centering device
- overcoat
- 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 a sucker rod centering device, which comprises an upper connector, a lower connector, a connecting rod and a centering body. The upper connector and the lower connector are in threaded connection with the connecting rod, the centering body is sleeved on the connecting rod provided with a clamp hoop, and the centering body is located on the upper portion of the clamp hoop. The centering body comprises an inner sleeve and an outer sleeve, the inner sleeve is vertically installed in the outer sleeve, and a roll ball is arranged between the inner sleeve and the outer sleeve. Rolling wheels are evenly inlayed on the circumference of the outer side of the outer sleeve and connected with an outer sleeve shaft. When a sucker rod moves vertically in an oil pipe, the rolling wheels are contacted with the inside of the oil pipe, thereby greatly reducing frictional force and preventing the centering device from being damaged due to the friction between the centering device and the oil pipe. When the sucker rod moves in the oil pipe in rotary mode, the sucker rod is always located at the central position of the oil pipe. Therefore, the sucker rod centering device can be suitable for moving of the sucker rod in the oil pipe in vertical mode and the rotary mode, and the application range is wide.
Description
Technical field
The utility model relates to erection device, concrete is a kind of oil pumping rod centering device.
Background technology
At present, the used motion of sucker rod in oil pipe of oil well production is divided into two kinds, and a kind of is to move up and down, and a kind of is to rotatablely move.When sucker rod rotatablely moved, the sucker rod body of rod and oil pipe can rub, and caused the tubing wall attenuation, bore pressure and reduced, and can grind leakage when serious; And after the body of rod of sucker rod and the box cupling wearing and tearing, the body of rod is impaired, has reduced the power that lifts and the torsional forces of sucker rod, thereby reduces the age of sucker rod, and the phenomenon of rod broken also might take place, and has influenced the ordinary production of oil well.Existing centralizer has a variety of, but mostly the centralizer body on the centralizer is the integraty structure, with the rotation campaign of sucker rod, uses serious wear for a long time, has increased cost of production.And the edge of centralizer is easy and oil pipe generation friction damage when sucker rod is gone into the well, and can cause the centralizer fragmentation to fall into well when serious, and this kind centralizer is not suitable for moving up and down of sucker rod.Therefore, need a kind of centralizer that can satisfy about the sucker rod simultaneously, rotatablely move.
Summary of the invention
The goal of the invention of the utility model is a kind of oil pumping rod centering device to be provided to the problems referred to above, can solve the centralizer edge and with oil pipe the impaired problem that rubs take place easily, can satisfy again sucker rod in oil pipe about, rotatablely move and do not wear and tear.
The utility model is realized through following technical scheme: oil pumping rod centering device; Comprise top connection, lower contact, connecting rod and centralizer body, top connection, lower contact are threaded with connecting rod, and centralizer body is sleeved on the connecting rod; Clip is housed on the connecting rod, and centralizer body is positioned at clip top; Cover and overcoat in described centralizer body comprises, interior cover is sat and is contained in the overcoat, between interior cover and the overcoat ball is arranged; The overcoat external circumferential evenly is inlaid with scroll wheel, and scroll wheel is connected with outer sleeve.
Adopt the good effect of technique scheme: the utility model puts outside centralizer body and is inlaid with scroll wheel; Scroll wheel is connected with outer sleeve, when sucker rod moves up and down in oil pipe, is contacted with oil pipe inside by scroll wheel; Simultaneously; Scroll wheel rotates, and has significantly reduced frictional force, prevents that the friction of centralizer and oil pipe is impaired; The utility model is owing to have ball between interior cover and the overcoat; When sucker rod rotatablely moved in oil pipe, interior cover rotated with sucker rod, and overcoat is motionless; Make sucker rod be positioned at the middle position of oil pipe all the time; Therefore, the utility model to sucker rod in oil pipe about, the rotation two kinds of motion modes all very suitable, range of application is bigger.
Four, description of drawings
Fig. 1 is the longitudinal section of the utility model;
Fig. 2 is the sectional elevation of centralizer body in the utility model.
Among the figure: cover, 7 overcoats, 8 balls, 9 scroll wheels in 1 top connection, 2 lower contacts, 3 connecting rods, 4 centralizer bodies, 5 clips, 6.
Five, the specific embodiment:Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the longitudinal section of the utility model; Fig. 2 is the sectional elevation of centralizer body in the utility model; In conjunction with Fig. 1, shown in Figure 2, oil pumping rod centering device comprises top connection 1, lower contact 2, connecting rod 3 and centralizer body 4; Top connection 1, lower contact 2 are threaded with connecting rod 3, and centralizer body 4 is sleeved on the connecting rod 3.Clip 5 is housed on the connecting rod 3, and centralizer body 4 is positioned at clip 5 tops, and the effect of clip 5 is to prevent that centralizer body 4 from sliding on connecting rod 3.Centralizer body 4 comprises interior cover 6 and overcoat 7, and interior cover 6 is sat and is contained in 7 li in overcoat, between interior cover 6 and the overcoat 7 ball 8 is arranged, the frictional force when ball 8 is used to eliminate the sucker rod rotation between interior cover 6 and the overcoat 7.Overcoat 7 external circumferential evenly are inlaid with scroll wheel 9, and scroll wheel 9 is connected with 7 in overcoat, the frictional force when scroll wheel 9 is used to eliminate sucker rod and moves up and down between centralizer body 4 and the oil pipe.
During use; Top connection 1, lower contact 2 are threaded with sucker rod respectively; Then with under the sucker rod in well, this process is that the scroll wheel 9 in overcoat 7 outsides rotates, and eliminates the frictional force between centralizer body 4 and the oil pipe; Sucker rod is gone into the well smoothly, be unlikely to take place centralizer edge and the impaired situation of oil pipe friction.During production, if sucker rod is to rotatablely move, then the interior cover 6 of centralizer body 4 rotates with the rotation of sucker rod in the utility model, and overcoat 7 is motionless, keeps the middle position of sucker rod in oil pipe.If sucker rod is to move up and down; The utility model is when keeping the middle position of sucker rod in oil pipe, and scroll wheel 9 rotates, and makes moving up and down of sucker rod unobstructed more smoothly; Significantly reduced centralizer body 4 and the resistance that the oil pipe friction forms, conveniently produced.
Claims (1)
1. oil pumping rod centering device; Comprise top connection (1), lower contact (2), connecting rod (3) and centralizer body (4); Top connection (1), lower contact (2) are threaded with connecting rod (3); Centralizer body (4) is sleeved on the connecting rod (3), and clip (5) is housed on the connecting rod (3), and centralizer body (4) is positioned at clip (5) top; Described centralizer body (4) comprises interior cover (6) and overcoat (7); Interior cover (6) is sat and is contained in overcoat (7) lining; Between interior cover (6) and the overcoat (7) ball (8) is arranged; It is characterized in that: overcoat (7) external circumferential evenly is inlaid with scroll wheel (9), and scroll wheel (9) is connected with overcoat (7) axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120258589U CN202140041U (en) | 2011-07-21 | 2011-07-21 | Sucker rod centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120258589U CN202140041U (en) | 2011-07-21 | 2011-07-21 | Sucker rod centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202140041U true CN202140041U (en) | 2012-02-08 |
Family
ID=45551102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120258589U Expired - Fee Related CN202140041U (en) | 2011-07-21 | 2011-07-21 | Sucker rod centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202140041U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222855A (en) * | 2016-12-12 | 2018-06-29 | 四川煜天石油机械设备有限公司 | A kind of reducing sucker rod rotary centralizer |
| CN108397142A (en) * | 2018-05-25 | 2018-08-14 | 大庆市天德忠石油科技有限公司 | A kind of pressure righting tubing centrilizer |
| CN108612491A (en) * | 2016-12-12 | 2018-10-02 | 四川煜天石油机械设备有限公司 | A kind of reducing rotary centralizer |
| CN108612492A (en) * | 2016-12-12 | 2018-10-02 | 四川煜天石油机械设备有限公司 | A kind of reducing oil pipe rotary centralizer |
-
2011
- 2011-07-21 CN CN201120258589U patent/CN202140041U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222855A (en) * | 2016-12-12 | 2018-06-29 | 四川煜天石油机械设备有限公司 | A kind of reducing sucker rod rotary centralizer |
| CN108612491A (en) * | 2016-12-12 | 2018-10-02 | 四川煜天石油机械设备有限公司 | A kind of reducing rotary centralizer |
| CN108612492A (en) * | 2016-12-12 | 2018-10-02 | 四川煜天石油机械设备有限公司 | A kind of reducing oil pipe rotary centralizer |
| CN108397142A (en) * | 2018-05-25 | 2018-08-14 | 大庆市天德忠石油科技有限公司 | A kind of pressure righting tubing centrilizer |
| CN108397142B (en) * | 2018-05-25 | 2019-02-19 | 大庆市天德忠石油科技有限公司 | A kind of pressure righting tubing centrilizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20200721 |