CN201714318U - Eccentric wear prevention rotary type centralizer for pumping rod and oil pipe of screw pump in oilfield - Google Patents
Eccentric wear prevention rotary type centralizer for pumping rod and oil pipe of screw pump in oilfield Download PDFInfo
- Publication number
- CN201714318U CN201714318U CN2010201845074U CN201020184507U CN201714318U CN 201714318 U CN201714318 U CN 201714318U CN 2010201845074 U CN2010201845074 U CN 2010201845074U CN 201020184507 U CN201020184507 U CN 201020184507U CN 201714318 U CN201714318 U CN 201714318U
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- centralizer
- oil pipe
- bearing
- screw pump
- eccentric wear
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Abstract
The utility model relates to an eccentric wear prevention rotary type centralizer for a pumping rod and an oil pipe of a screw pump in an oilfield. The centralizer comprises an upper joint (1), a lower joint (2), a link rod (3) and a centralizing device (4), wherein the upper joint (1), the lower joint (2) and the link rod (3) are in threaded connection; the centralizing device (4) is sleeved on the link rod (3); a lathedog (5) is mounted on the link rod (3); and the centralizing device (4) is located at the upper part of the lathedog (5) and comprises a bearing (6) and a bearing protective sleeve (7), wherein the bearing (6) is arranged in the bearing protective sleeve (7), and a plurality of support blocks (8) matched with the radian of the inner wall of the oil pipe are arranged on the outer surface of the bearing protective sleeve (7). The device can ensure that the pumping rod is always centralized in the oil pipe, reduce the friction between the centralizer and the oil pipe, prolong the service life of the centralizer, and reduce the manufacturing cost.
Description
One, technical field
The utility model relates to a kind of sucker rod erection device, specifically is that the rotary centralizer of eccentric wear is prevented with screw pump sucker rod and oil pipe in a kind of oil field.
Two, background technology
When the oil field produced with screw bolt well, action of centrifugal force during owing to the rotation of the sucker rod body of rod made the sucker rod body of rod and oil pipe rub, and causes the tubing wall attenuation, bears pressure and reduces; 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, and the phenomenon of rod broken also might take place time one length, has influenced the ordinary production of oil well.Existing centralizer has a variety of, but the centralizer body on the centralizer mostly is the integraty structure, with the rotation campaign of sucker rod, uses serious wear for a long time, has increased cost of production.
Three, summary of the invention
Goal of the invention of the present utility model is to provide a kind of oil field with screw pump sucker rod and the anti-rotary centralizer of eccentric wear of oil pipe at the problems referred to above, has solved the problem that centralizer and sucker rod rotate together, reduces the wearing and tearing of centralizer.
The utility model is achieved through the following technical solutions: the oil field is made up of top connection, lower contact, connecting rod, centralizer body with screw pump sucker rod and the anti-rotary centralizer of eccentric wear of oil pipe, top connection, lower contact are threaded with connecting rod, centralizer body is sleeved on the connecting rod, clip is housed on the connecting rod, and centralizer body is positioned at clip top; Centralizer body is made of bearing, bearing protecting jacket, and bearing is sat and to be contained in the bearing protecting jacket, and the external surface of bearing protecting jacket has the back-up block that several and tube inner wall radian match.
Adopt the good effect of technique scheme: the utility model adopts bearing and bearing protecting jacket to be sleeved on the connecting rod jointly; when sucker rod rotates; bearing inner race rotates together with connecting rod; the outer ring and the bearing protecting jacket of bearing are motionless; both guaranteed that sucker rod was in position placed in the middle all the time in oil pipe; reduce the friction between centralizer and the oil pipe again, prolonged the application life of centralizer, reduced cost of production.
Four, description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is the longitudinal section of Fig. 1;
Fig. 3 is that A-A among Fig. 2 is to sectional view.
Among the figure: 1 top connection, 2 lower contacts, 3 connecting rods, 4 centralizer bodies, 5 clips, 6 bearings, 7 bearing protecting jackets, 8 back-up blocks.
Five, the specific embodiment: the utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is a front view of the present utility model, Fig. 2 is the longitudinal section of Fig. 1, Fig. 3 is that A-A among Fig. 2 is to sectional view, in conjunction with Fig. 1, Fig. 2, shown in Figure 3, the oil field is made up of top connection 1, lower contact 2, connecting rod 3, centralizer body 4 with screw pump sucker rod and the anti-rotary centralizer of eccentric wear of oil pipe, top connection 1 and lower contact 2 are used to be connected the sucker rod at two ends, and 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 places clip 5 tops, and clip 5 is the positions that are used for fixing centralizer body 4, prevents centralizer body 4 slippages.Centralizer body 4 is made of bearing 6, bearing protecting jacket 7, and bearing 6 is sat and is contained in 7 li of bearing protecting jackets.Cross pine or tension for fear of centralizer in oil pipe, influence the rotation of sucker rod, can make the internal diameter of bearing 6 be slightly larger than the external diameter of connecting rod 3, the external diameter of bearing protecting jacket 7 is slightly less than the internal diameter of oil pipe.The external surface of bearing protecting jacket 7 has several and the back-up block 8 that the tube inner wall radian matches, and wherein, the quantity of back-up block 8 is 4-8, is advisable with 6; Back-up block 8 on the bearing protecting jacket 7 is except having supporting role, and the space between back-up block 8 and the back-up block 8 became oily passage.During operation; sucker rod rotates; the interior cover of bearing 6 rotates with connecting rod 3; and the back-up block 8 on the bearing protecting jacket 7 contacts with oil pipe; make that the overcoat of bearing protecting jacket 7 and bearing 6 is motionless; the ball of bearing 6 inside can reduce to rotate formed frictional force, has reduced the wearing and tearing of centralizer and oil pipe.
During installation, earlier centralizer body 4 is sleeved on the connecting rod 3, places the top of clip 5, connecting rod 3 is threaded with top connection 1 and lower contact 2 again, top connection 1 is connected with sucker rod respectively with lower contact 2 again and gets final product.Centralizer uses between the sucker rod total length that vertically connects at interval, with per 10 sucker rods a centralizer is installed and is advisable.
Claims (4)
1. the rotary centralizer of eccentric wear is prevented with screw pump sucker rod and oil pipe in an oil field; be by top connection (1); lower contact (2); connecting rod (3); centralizer body (4) is formed; top connection (1); lower contact (2) is threaded with connecting rod (3); centralizer body (4) is sleeved on the connecting rod (3); clip (5) is housed on the connecting rod (3); centralizer body (4) is positioned at clip (5) top; it is characterized in that: centralizer body (4) is by bearing (6); bearing protecting jacket (7) constitutes; bearing (6) is sat and to be contained in bearing protecting jacket (7) lining, and the external surface of bearing protecting jacket (7) has the back-up block (8) that several and tube inner wall radian match.
2. the rotary centralizer of eccentric wear is prevented with screw pump sucker rod and oil pipe in oil field according to claim 1, and it is characterized in that: the internal diameter of described bearing (6) is slightly larger than the external diameter of connecting rod (3), and the external diameter of bearing protecting jacket (7) is slightly less than the internal diameter of oil pipe.
3. the rotary centralizer of eccentric wear is prevented with screw pump sucker rod and oil pipe in oil field according to claim 1, it is characterized in that: back-up block (8) quantity on the described bearing protecting jacket (7) is 4-8.
4. the rotary centralizer of eccentric wear is prevented with screw pump sucker rod and oil pipe in oil field according to claim 1, and it is characterized in that: back-up block (8) quantity on the described bearing protecting jacket (7) is 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201845074U CN201714318U (en) | 2010-05-05 | 2010-05-05 | Eccentric wear prevention rotary type centralizer for pumping rod and oil pipe of screw pump in oilfield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201845074U CN201714318U (en) | 2010-05-05 | 2010-05-05 | Eccentric wear prevention rotary type centralizer for pumping rod and oil pipe of screw pump in oilfield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201714318U true CN201714318U (en) | 2011-01-19 |
Family
ID=43460316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201845074U Expired - Fee Related CN201714318U (en) | 2010-05-05 | 2010-05-05 | Eccentric wear prevention rotary type centralizer for pumping rod and oil pipe of screw pump in oilfield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201714318U (en) |
Cited By (3)
| 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 |
| CN113756729A (en) * | 2021-11-01 | 2021-12-07 | 南通市华业石油机械有限公司 | Bead string type sucker rod abrasion-proof centralizer |
-
2010
- 2010-05-05 CN CN2010201845074U patent/CN201714318U/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 |
| 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 |
| CN113756729A (en) * | 2021-11-01 | 2021-12-07 | 南通市华业石油机械有限公司 | Bead string type sucker rod abrasion-proof centralizer |
| CN113756729B (en) * | 2021-11-01 | 2024-05-07 | 南通市华业石油机械有限公司 | Bead-type sucker rod wear-resistant centralizer |
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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: 20110119 Termination date: 20120505 |