CN201159057Y - Elastic centralizer - Google Patents
Elastic centralizer Download PDFInfo
- Publication number
- CN201159057Y CN201159057Y CNU2008200164529U CN200820016452U CN201159057Y CN 201159057 Y CN201159057 Y CN 201159057Y CN U2008200164529 U CNU2008200164529 U CN U2008200164529U CN 200820016452 U CN200820016452 U CN 200820016452U CN 201159057 Y CN201159057 Y CN 201159057Y
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- CN
- China
- Prior art keywords
- friction
- friction body
- oil pipe
- friction piece
- pressing cap
- 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
An elastic stabilizer is composed of a friction body pressing cap, a friction body and an anti-friction rod, wherein the friction body is sleeved on the anti-friction rod, the friction body pressing cap is connected with the friction body, rolling balls are installed in the friction body pressing cap, a ring groove is arranged in the friction body pressing cap, rolling balls are arranged in the ring groove, an radial hole is arranged on the friction body pressing cap, rolling balls are installed in the radial hole, steel screws are filled on the outer side of the radial hole, the anti-friction rod and the rolling balls are in rolling friction, the friction coefficient is small, the abrasion is not easy to occur, the anti-friction is elastic and can be changed along the inner diameter of the oil pipe, thereby the axial force and the radial force between the anti-friction body and the oil pipe can be generated, when the anti-friction body is temporarily fixed on the inner wall of the oil pipe, the abrasion of the friction body can not occur on a rough inner surface of the oil pipe because of the friction, thereby the elastic stabilizer itself can not abraded, the non-abrasion of the oil pipe and the oil pumping rod also can be guaranteed, and the service lives of the oil pumping rod and the oil pipe are improved.
Description
One, technical field
The utility model relates to the oil production equipment of petroleum industry, particularly a kind of elastic centralizer.
Two, background technology
In sucker-rod pumping system, no matter be straight well or inclined shaft, R a T all is relative motion in contact, therefore, exist inevitable wearing and tearing between sucker rod and the oil pipe, particularly deep-well and inclined shaft, sucker rod is easy to bending in oil pipe, the problem of serious sucker rod partial wear oil pipe occurs, behind the generation eccentric wear oil pipe and sucker rod can not be used, cause the oil well operation, oil well repair free period is short, increases operating cost, increases rod tube consumption, the oil well off-time is many, has reduced crude output.In order to address this problem, there is the aboveground device that is the wear-resistant pair of sucker rod that used of eccentric wear in the oil field, this device is a suit wearing bush on smooth abrasionproof bar, be lowered on the pump in the oil pipe with sucker rod, require wearing bush to be fixed on the tube inner wall during oil pumping, smooth abrasionproof bar moves relative to wearing bush, abrasionproof club shaft smooth surface, frictional force is little when mobile, can not produce wearing and tearing.But the wearing bush of this device and the support force of tube inner wall are little, always move with smooth abrasionproof bar, and wearing bush self is easy to wearing and tearing.Therefore, the problem of sucker rod partial wear oil pipe still exists.
Three, summary of the invention
The purpose of this utility model is a kind of elastic centralizer of design, avoids sucker rod wearing and tearing oil pipe, the application life of improving sucker rod, oil pipe.
The purpose of this utility model is achieved in that by friction piece pressure cap, friction piece, wear bar to be formed, and friction piece is sleeved on the wear bar, and the friction piece pressure cap connects with friction piece, in the friction piece pressure cap ball is installed.
In the friction piece pressure cap, be provided with annular groove, ball is installed in annular groove.
Be provided with radial hole on the friction piece pressure cap, ball is installed in radial hole, the radial hole outside is filled up by steel nail.
The beneficial effects of the utility model are: wear bar and ball are rolling friction, and friction factor is little, can not wear and tear, wear-resistant body is flexible, can change with pipe aperture, therefore, can produce axial force and radial load between wear-resistant body and the oil pipe, temporarily be fixed on the tube inner wall, wear-resistant body can not rub on coarse pipe inner surface and wear and tear, and therefore, the utility model self can not wear and tear, can guarantee that also oil pipe, sucker rod do not wear and tear, improve the application life of sucker rod, oil pipe.
Four, description of drawings
Accompanying drawing 1 is the assembling drawing of first kind of embodiment of the utility model.
Accompanying drawing 2 is assembling drawings of second kind of embodiment of the utility model.
Five, the specific embodiment
Below in conjunction with accompanying drawing 1, first kind of embodiment described in detail.
As shown in Figure 1, be made up of ball 1, friction piece pressure cap 2, friction piece 3, wear bar 4, friction piece 3 is sleeved on the wear bar 4, and friction piece pressure cap 2 connects with friction piece 3, and ball 1 is installed in friction piece pressure cap 2.In friction piece pressure cap 2, be provided with annular groove, ball 1 is installed in annular groove.
2 couples of second kind of embodiment describe in detail below in conjunction with accompanying drawing.
As shown in Figure 2, be made up of ball 1, friction piece pressure cap 2, friction piece 3, wear bar 4, steel nail 5, friction piece 3 is sleeved on the wear bar 4, and friction piece pressure cap 2 connects with friction piece 3, and ball 1 is installed in friction piece pressure cap 2.Be provided with radial hole on friction piece pressure cap 2, ball 1 is installed in radial hole, the radial hole outside is filled up by steel nail 5.
Claims (3)
1, a kind of elastic centralizer, form by friction piece pressure cap (2), friction piece (3), wear bar (4), friction piece (3) is sleeved on the wear bar (4), and friction piece pressure cap (2) connects with friction piece (3), it is characterized in that: ball (1) is installed in friction piece pressure cap (2).
2, elastic centralizer according to claim 1 is characterized in that: be provided with annular groove in friction piece pressure cap (2), ball (1) is installed in annular groove.
3, elastic centralizer according to claim 1 is characterized in that: be provided with radial hole on friction piece pressure cap (2), ball (1) is installed in radial hole, the radial hole outside is filled up by steel nail (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200164529U CN201159057Y (en) | 2008-01-17 | 2008-01-17 | Elastic centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200164529U CN201159057Y (en) | 2008-01-17 | 2008-01-17 | Elastic centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201159057Y true CN201159057Y (en) | 2008-12-03 |
Family
ID=40109643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200164529U Expired - Fee Related CN201159057Y (en) | 2008-01-17 | 2008-01-17 | Elastic centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201159057Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2504638C1 (en) * | 2012-09-28 | 2014-01-20 | Общество с ограниченной ответственностью "Нефтемаш Проект" | Flow string protectoliser |
| CN107965275A (en) * | 2016-10-19 | 2018-04-27 | 中国石油化工股份有限公司 | Centralizer |
| CN112012673B (en) * | 2020-10-22 | 2021-01-15 | 胜利油田固邦石油装备有限责任公司 | Casing centralizer for directional well |
-
2008
- 2008-01-17 CN CNU2008200164529U patent/CN201159057Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2504638C1 (en) * | 2012-09-28 | 2014-01-20 | Общество с ограниченной ответственностью "Нефтемаш Проект" | Flow string protectoliser |
| CN107965275A (en) * | 2016-10-19 | 2018-04-27 | 中国石油化工股份有限公司 | Centralizer |
| CN112012673B (en) * | 2020-10-22 | 2021-01-15 | 胜利油田固邦石油装备有限责任公司 | Casing centralizer for directional well |
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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: 20081203 Termination date: 20100220 |