CN201908588U - Self-positioned roller type sucker rod centralizer - Google Patents
Self-positioned roller type sucker rod centralizer Download PDFInfo
- Publication number
- CN201908588U CN201908588U CN2011200357148U CN201120035714U CN201908588U CN 201908588 U CN201908588 U CN 201908588U CN 2011200357148 U CN2011200357148 U CN 2011200357148U CN 201120035714 U CN201120035714 U CN 201120035714U CN 201908588 U CN201908588 U CN 201908588U
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- roller
- sucker rod
- support
- self
- centralizer
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Abstract
The utility model discloses a self-positioned roller type sucker rod centralizer, which is applied to the centralization of an underground sucker rod of an oil field. Three brackets with fan-shaped sections are relatively arranged to form a hollow cylinder; each bracket is provided with two axial holes; the center lines of the axial holes of two adjacent brackets are positioned on the same straight line; bolts are respectively fixed in each axial hole; rectangular holes are respectively arranged in the middle of each bracket; a roller is arranged in the rectangular hole of each bracket and is cylindrical; an arc groove is arranged on the wall of each roller; each roller is provided with an axial hole; a shaft is arranged in the axial hole of the roller; two ends of the shaft are fixed on the square wall of the bracket; the arc grooves of three rollers relatively form an circumcircle; and the diameter of the circumcircle is the same as the outside diameter of the sucker rod. The self-positioned roller type sucker rod centralizer has the beneficial effect that the self-positioned roller type sucker rod centralizer can be automatically positioned at the position at which the sucker rod is worn. The rolling friction is formed between the sucker rod and the centralizer so as to effectively reduce the eccentric wear of the sucker rod and protect the sucker rod and an oil pipe.
Description
Technical field
The utility model relates to oil recovery technique field, oil field, and particularly pumping production well downhole tool is a kind of centralizer of sucker rod.
Background technology
Sucker rod partial wear can cause pumping production well rod parting, pipeline rupture, is to cause oil well frequently to examine the one of the main reasons of pump.At present, the centralizer of sucker rod is used in the oil field, make sucker rod pump the time, can be in the oil pipe center, reduce eccentric wear.Oil pumping rod centering device mainly contains wiper block formula oil pumping rod centering device and roller type oil pumping rod centering device.During the work of wiper block formula oil pumping rod centering device, be sliding friction between wiper block and the tube inner wall, be difficult to overcome the short disadvantage of period of validity; On the roller type oil pumping rod centering device roller is arranged, roller is narrower, when centralizer is worked, it is vertical with wheel shaft to be difficult to guarantee that roller is subjected to power, and roller rotates dumb, can not well solve the problem of sucker rod and oil pipe eccentric wear, cause the R a T loss, the oil recovery cost of production increases.
The utility model content
The purpose of this utility model is: a kind of self-align roller type oil pumping rod centering device is provided, can realizes rolling friction between sucker rod and the centralizer simultaneously in location, sucker rod generation eccentric wear position, reduce sucker rod partial wear effectively, reduce the oil well production cost.Solve pumping production well sucker rod partial wear problem.
The technical solution adopted in the utility model is: self-align roller type oil pumping rod centering device, mainly form by axle, support, roller and bolt, it is characterized in that: three cross sections are that fan-shaped support is formed a hollow cylinder in the back relatively, middle part, a side at three supports has one to protrude piece respectively, another middle part, side at three supports has a recessed groove respectively, and projecting block is embedded in the recessed groove; Each support has two axial holes, and the axial hole center line of adjacent two supports is fixed with a bolt respectively in axial hole on same straight line, and three bolts are fixed together three supports; At the middle part of each support a rectangular hole is arranged, a roller is arranged in the slot of support; Roller is the cylinder bodily form, on the wall of roller circular groove is arranged, and roller has axial hole, in the axial hole of roller axle is arranged, and the two ends of axle are fixed on the square hole wall of support; The circular groove of three rollers is formed a circumscribed circle relatively, and external diameter of a circle is identical with the external diameter of sucker rod.When sucker rod pumped, three rollers rotated.
The center line angle of two axial holes of described support is 120 °.
Sketch the principle of self-align roller type oil pumping rod centering device.Consult Fig. 1.In use, centralizer is installed on the sucker rod, sucker rod passes the circumscribed circle that three rollers 3 are formed.Connect by bolt 4 between three supports 2.Centralizer can move along whole sucker rod easy on and off, and support 2 and roller 3 qualifications by three directions make sucker rod be in relative middle position in oil pipe, reach the purpose of setting upright sucker rod, prevent sucker rod and oil pipe generation eccentric wear.Sucker rod two ends box cupling blank area plays position-limiting action to centralizer.Axle 1 passes roller 3 centre bores, and roller 3 can rotate flexibly, and the outer arc face and the sucker rod external diameter of roller 3 are complementary; sucker rod is pressed in when moving back and forth on the roller 3, and roller 3 rotates around axle 1, and sliding friction is transformed into rolling friction; reduce frictional force, sucker rod is played a protective role.Because this centralizer is when sucker rod is in center position in oil pipe, support 2 outer walls do not contact with oil pipe, sucker rod is not inoperative with this centralizer of tube inner wall generation friction, only when sucker rod deflection oil pipe one side, this side stand 2 is just overstock to tube inner wall, rely on this centralizer of frictional force to be positioned at the eccentric wear position, sucker rod contacts with the roller 3 of centralizer, sucker rod is played centralizing function, therefore this centralizer has and makes the effect that is positioned at the eccentric wear place by oneself, has reduced the wearing and tearing to sucker rod.The outside diameter of support 2 is less than pipe aperture, and centralizer support 2 forms certain interval with tube inner wall, has so just guaranteed that centralizer is lowered in the oil pipe smoothly, has increased oil flow channel simultaneously.
The beneficial effects of the utility model: the self-align roller type oil pumping rod centering device of the utility model, compare with conventional oil pumping rod centering device and to have following characteristics: centralizer can be positioned at sucker rod generation eccentric wear position automatically.Form rolling friction between sucker rod and the centralizer, reduce sucker rod partial wear effectively, R a T is played a protective role.
Description of drawings
Fig. 1 is the self-align roller type oil pumping rod centering device of a utility model structural profile schematic diagram; It is the A-A sectional view of Fig. 2.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the assembling drawing of a support, a roller and an axle.
Fig. 4 is the vertical view of Fig. 3.
Among the figure, 1-axle, 2-support, 3-roller, 4-bolt.
The specific embodiment
Embodiment 1: being applied to diameter with one is that the self-align roller type oil pumping rod centering device of 22mm sucker rod is an example, and the utility model is described in further detail.
Consult Fig. 1.The self-align roller type oil pumping rod centering device of the utility model mainly is made up of axle 1, support 2, roller 3 and bolt 4.
Three cross sections are that fan-shaped support 2 is formed a hollow cylinder in the back relatively.The length 160mm of hollow cylinder, external diameter 45mm, internal diameter 25mm.Middle part, a side at three supports 2 has one to protrude piece respectively, protrudes the length 80mm of piece.Another middle part, side at three supports 2 has a recessed groove, the length 79.5mm of recessed groove respectively.Projecting block is embedded in the recessed groove.It is the axial hole of 6mm that each support 2 has two diameters, and the center line angle of 2 two axial holes of support is 120 °.The axial hole center line of adjacent two supports 2 is on same straight line, and 4, three bolts 4 of bolt that are fixed with a M6 in axial hole respectively are fixed together three supports 2.At the middle part of each support 2 a rectangular hole is arranged, a roller 3 is arranged in the slot of support 2; Roller 3 is the cylinder bodily form, on the wall of roller 3 circular groove is arranged, and roller 3 has axial hole, and axle 1 is arranged in the axial hole of roller 3, and the two ends of axle 1 are fixed on the square hole wall of support 2; The circular groove of three rollers 3 is formed the circumscribed circle that diameter is 22mm relatively, and external diameter of a circle is identical with the external diameter of sucker rod.
The fixing means at axle 1 two ends: adopt the screw gland, the two ends of gland compression axis 1.
Claims (2)
1. self-align roller type oil pumping rod centering device, mainly form by axle (1), support (2), roller (3) and bolt (4), it is characterized in that: three cross sections are that fan-shaped support (2) is formed a hollow cylinder in the back relatively, middle part, a side at three supports (2) has one to protrude piece respectively, another middle part, side at three supports (2) has a recessed groove respectively, and projecting block is embedded in the recessed groove; Each support (2) has two axial holes, and the axial hole center line of adjacent two supports (2) is fixed with a bolt (4) respectively in axial hole on same straight line, and three bolts (4) are fixed together three supports (2); At the middle part of each support (2) a rectangular hole is arranged, a roller (3) is arranged in the slot of support (2); Roller (3) is the cylinder bodily form, on the wall of roller (3) circular groove is arranged, and roller (3) has axial hole, and axle (1) is arranged in the axial hole of roller (3), and the two ends of axle (1) are fixed on the square hole wall of support (2); The circular groove of three rollers (3) is formed a circumscribed circle relatively, and external diameter of a circle is identical with the external diameter of sucker rod.
2. self-align roller type oil pumping rod centering device according to claim 1 is characterized in that: the center line angle of (2) two axial holes of described support is 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200357148U CN201908588U (en) | 2011-02-10 | 2011-02-10 | Self-positioned roller type sucker rod centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200357148U CN201908588U (en) | 2011-02-10 | 2011-02-10 | Self-positioned roller type sucker rod centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201908588U true CN201908588U (en) | 2011-07-27 |
Family
ID=44300791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200357148U Expired - Lifetime CN201908588U (en) | 2011-02-10 | 2011-02-10 | Self-positioned roller type sucker rod centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201908588U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104201A (en) * | 2013-01-30 | 2013-05-15 | 青州市春晖科技发展有限公司 | Multidirectional adjustment rotary-type pipe sleeve centering device |
| CN112145078A (en) * | 2020-09-03 | 2020-12-29 | 福建亿钻机械有限公司 | Drill rod guiding device of horizontal directional drilling machine |
| CN112227981A (en) * | 2020-11-11 | 2021-01-15 | 徐海英 | Carbon fiber sucker rod centralizer |
-
2011
- 2011-02-10 CN CN2011200357148U patent/CN201908588U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104201A (en) * | 2013-01-30 | 2013-05-15 | 青州市春晖科技发展有限公司 | Multidirectional adjustment rotary-type pipe sleeve centering device |
| CN103104201B (en) * | 2013-01-30 | 2015-04-15 | 青州市春晖科技发展有限公司 | Multidirectional adjustment rotary-type pipe sleeve centering device |
| CN112145078A (en) * | 2020-09-03 | 2020-12-29 | 福建亿钻机械有限公司 | Drill rod guiding device of horizontal directional drilling machine |
| CN112227981A (en) * | 2020-11-11 | 2021-01-15 | 徐海英 | Carbon fiber sucker rod centralizer |
| CN112227981B (en) * | 2020-11-11 | 2021-07-13 | 徐海英 | Carbon fiber sucker rod centralizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |
|
| CX01 | Expiry of patent term |