CN212225134U - Anti-drop sucker rod centralizer - Google Patents
Anti-drop sucker rod centralizer Download PDFInfo
- Publication number
- CN212225134U CN212225134U CN202020776710.4U CN202020776710U CN212225134U CN 212225134 U CN212225134 U CN 212225134U CN 202020776710 U CN202020776710 U CN 202020776710U CN 212225134 U CN212225134 U CN 212225134U
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- China
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- screw rod
- rod
- groove
- column
- threaded sleeve
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Abstract
The utility model relates to an oil recovery equipment field, concretely relates to anticreep sucker rod centralizer. The centering device comprises a screw rod, a centering column concentric with the screw rod is fixed on the screw rod, the screw rod runs through the centering column, a plurality of grooves are uniformly distributed on the centering column along the circumference, the length direction of each groove is parallel to the length direction of the centering column, a plurality of rotating wheels are rotatably connected in each groove along the length direction of each groove, a screw sleeve is in threaded connection with the upper end of the screw rod, a ball body is arranged in the screw sleeve in a rotating mode, the upper end of the ball body is in rolling contact with the upper end of the screw sleeve, a top plate is arranged in the screw sleeve below the ball body in a sliding mode, the lower end of the ball body is in rolling contact with an arc-shaped groove in the upper end of the top plate, the upper end of the screw rod tightly supports the lower end of the top plate. The utility model discloses, right effectual, simple structure, simple to operate can effectually play the effect of rightting to the sucker rod.
Description
Technical Field
The utility model relates to an oil recovery equipment field, concretely relates to anticreep sucker rod centralizer.
Background
The sucker rod string is an important downhole device in the production and operation process of an oil pumping well in an oil field. Due to the fact that the well body of the oil well has a certain inclination and the formation sand is produced, the sucker rod which reciprocates up and down in the oil pipe column for a long time under the severe working condition often deviates and is abraded, even the sucker rod is loosened and falls off, and the normal production and the safe operation of the oil well are seriously influenced. In this regard, anti-run centralizers are often provided on the rod string in the field to mitigate this. However, the wear resistance, anti-dropping performance and use effect of the currently adopted sucker rod centralizer cannot meet the requirements, the service life is short, and further improvement and improvement are needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that one kind is right effectual, simple structure, simple to operate can effectually play the effect of rightting to the sucker rod, and stable in structure has the anticreep function, can be applicable to the anticreep sucker rod centralizer of slope oil well simultaneously.
In order to realize the purpose, the utility model provides a technical scheme is:
an anti-drop sucker rod centralizer comprises a screw rod, wherein a centralizing column concentric with the screw rod is fixed on the screw rod, the screw rod penetrates through the centralizing column, a plurality of grooves are uniformly distributed on the periphery of the centralizing column, the length direction of each groove is parallel to the length direction of the centralizing column, a plurality of rotating wheels are rotatably connected in the grooves along the length direction of the grooves, the rotating wheels partially protrude to the outer sides of the grooves, a screw sleeve is in threaded connection with the upper end of the screw rod, a ball body is rotatably arranged in the screw sleeve, the upper end of the ball body is in rolling contact with the upper end of the screw sleeve, a top plate is slidably arranged in the screw sleeve below the ball body, the lower end of the ball body is in rolling contact with an arc-shaped groove at the upper end of the top plate, a through hole concentric with the screw sleeve is formed in the upper end of the screw sleeve, a,
the anti-falling device comprises a lantern ring sleeved on a screw rod above the centering column, a plurality of polished rods parallel to the screw rod are uniformly distributed and fixed on the circumference of the lower end of the lantern ring, the polished rods are in sliding fit with the centering column, springs are sleeved on the lantern ring and the polished rods between the centering columns, a plurality of insert blocks are uniformly distributed and fixed on the circumference of the upper end of the lantern ring, a flat groove corresponding to the insert blocks is formed in the lower end of the screw sleeve, and the insert blocks are inserted into the flat groove in an inserting mode.
Specifically, the upper end of the connecting sleeve is provided with a threaded hole for the connecting sleeve to use.
Specifically, the upper end and the lower end of the righting column are both conical.
Specifically, the annular groove is formed in the lower end of the threaded sleeve outside the flat groove, the protective sleeve is arranged in the annular groove in a sliding mode, and the lower end of the threaded sleeve is in threaded connection with a locking screw used for stabilizing the protective sleeve.
Specifically, the aperture of the through hole is larger than the diameter of the pull rod, and the aperture of the through hole is smaller than the diameter of the ball body.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses, right effectual, simple structure, simple to operate can effectually play the effect of rightting to the sucker rod, and stable in structure has the anticreep function, can be applicable to the inclined oil well simultaneously, is suitable for the position of the oblique section of oil well, has prolonged the fatigue time of sucker rod in the use, has solved the sucker rod and has broken the taking off because of moment of flexure effect, has prolonged the operating cycle of sucker rod.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of the area a in fig. 1.
Detailed Description
As shown in fig. 1-2, an anti-drop sucker rod centralizer comprises a screw rod 1, a centralizing column 2 concentric with the screw rod 1 is fixed on the screw rod 1, the upper end and the lower end of the centralizing column 2 are both conical, the screw rod 1 penetrates through the centralizing column 2, a plurality of grooves 3 are uniformly distributed on the periphery of the centralizing column 2, the length direction of the grooves 3 is parallel to the length direction of the centralizing column 2, a plurality of rotating wheels 4 are rotatably connected in the grooves 3 along the length direction, the rotating wheels 4 partially protrude to the outer side of the grooves 3, a screw sleeve 5 is in threaded connection with the upper end of the screw rod 1, a ball 7 is rotatably arranged in the screw sleeve 5, the upper end of the ball 7 is in rolling contact with the upper end of the screw sleeve 5, a top plate 6 is slidably arranged in the screw sleeve 5 below the ball 7, the lower end of the ball 7 is in rolling contact with an arc-shaped groove at the upper end of the top plate 6, the upper end of the screw rod 1, the pull rod 8 penetrates through the through hole 17 and then is fixedly connected with the connecting sleeve 18, a threaded hole with the center of the connecting sleeve 18 is formed in the upper end of the connecting sleeve 18, the aperture of the through hole 17 is larger than the diameter of the pull rod 8, the aperture of the through hole 17 is smaller than the diameter of the ball body 7, and an anti-falling device is arranged between the threaded sleeve 5 and the righting column 2.
The anticreep device establishes the lantern ring 10 on righting post 2 top screw rod 1 including the cover, and lantern ring 10 lower extreme circumference equipartition is fixed with a plurality of polished rods 9 parallel with screw rod 1, polished rod 9 with right post 2 sliding fit, the cover is equipped with spring 11 on lantern ring 10 and the polished rod 9 of righting between the post 2, and lantern ring 10 upper end circumference equipartition is fixed with a plurality of inserts 15, and the 5 lower extremes of swivel nut are seted up the parallel groove 14 that corresponds with insert 15, and insert 15 pegs graft in parallel groove 14.
The lower end of the threaded sleeve 5 outside the flat groove 14 is provided with a circular groove 12, a sheath 13 is arranged in the circular groove 12 in a sliding mode, and the lower end of the threaded sleeve 5 is in threaded connection with a locking screw 16 used for stabilizing the sheath 13.
When the utility model is installed, a plurality of the devices can be installed on the sucker rod string, the lower end of the screw rod 1 is in threaded connection with the sucker rod below through a coupling, the sucker rod above is in threaded connection with the threaded hole at the upper end of the connecting sleeve 18, when the sucker rod string moves, the righting column 2 and the rotating wheel 4 thereon can right the sucker rod string to prevent the sucker rod from eccentric abrasion with the inner edge of the oil pipe, thereby effectively protecting the sucker rod, because the connecting sleeve 18 is connected with the screw sleeve 5 through the pull rod 8 and the ball body 7, the pull rod 8 can rotate along with the ball body 7, therefore, the sucker rod above can form a certain inclined included angle with the device, the phenomenon that the sucker rod breaks off due to the action of bending moment is solved, the operation period of the sucker rod is prolonged, the sucker rod string can be suitable for an inclined well section, the inserting block 15 is inserted in the flat groove 14, therefore, the relative rotation of the screw rod, sheath 13 can effectual protection anticreep device, prevents that anticreep device from damaging.
When the swivel nut 5 of maintaining this device needs to be dismantled, locking screw 16 is become flexible for sheath 13 goes upward to in the annular groove 12, then pushes down lantern ring 10, makes inserted block 15 break away from in the flat slot 14, can rotate swivel nut 5 this moment, makes swivel nut 5 and screw rod 1 upper end separation.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. An anti-drop sucker rod centralizer comprises a screw rod (1) and is characterized in that a centralizing column (2) concentric with the screw rod (1) is fixed on the screw rod (1), the screw rod (1) penetrates through the centralizing column (2), a plurality of grooves (3) are uniformly distributed on the upper circumference of the centralizing column (2), the length direction of each groove (3) is parallel to the length direction of the centralizing column (2), a plurality of rotating wheels (4) are rotatably connected in each groove (3) along the length direction of the groove, part of each rotating wheel (4) protrudes to the outer side of each groove (3), a threaded sleeve (5) is connected to the upper end of the screw rod (1) in a threaded manner, a ball body (7) is rotatably arranged in the threaded sleeve (5), the upper end of the ball body (7) is in rolling contact with the upper end of the threaded sleeve (5), a top plate (6) is slidably arranged in each threaded sleeve (5) below the ball body (7), the lower end of the ball body (7, a through hole (17) concentric with the threaded sleeve (5) is formed at the upper end of the threaded sleeve (5), a pull rod (8) concentric with the threaded sleeve is fixed at the upper end of the sphere (7), the pull rod (8) penetrates through the through hole (17) and then is fixedly connected with a connecting sleeve (18), an anti-falling device is arranged between the threaded sleeve (5) and the righting column (2),
anticreep device establishes lantern ring (10) on righting post (2) top screw rod (1) including the cover, lantern ring (10) lower extreme circumference equipartition is fixed with a plurality of polished rod (9) parallel with screw rod (1), polished rod (9) with right post (2) sliding fit, the cover is equipped with spring (11) on lantern ring (10) and polished rod (9) between righting post (2), lantern ring (10) upper end circumference equipartition is fixed with a plurality of inserted blocks (15), flat slot (14) that correspond with inserted block (15) are seted up to swivel nut (5) lower extreme, inserted block (15) are pegged graft in flat slot (14).
2. The anti-drop sucker rod centralizer according to claim 1, characterized in that the upper end of the connecting sleeve (18) is provided with a threaded hole for centering on the connecting sleeve.
3. The anti-drop sucker rod centralizer of claim 1, characterized in that the upper end and the lower end of the centralizing column (2) are both conical.
4. The anti-drop sucker rod centralizer according to claim 1, characterized in that the lower end of the threaded sleeve (5) outside the flat groove (14) is provided with a circular groove (12), a sheath (13) is arranged in the circular groove (12) in a sliding manner, and the lower end of the threaded sleeve (5) is connected with a locking screw (16) for stabilizing the sheath (13) in a threaded manner.
5. The anti-drop sucker rod centralizer according to claim 1, characterized in that the aperture of the through hole (17) is larger than the diameter of the pull rod (8), and the aperture of the through hole (17) is smaller than the diameter of the ball body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020776710.4U CN212225134U (en) | 2020-05-12 | 2020-05-12 | Anti-drop sucker rod centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020776710.4U CN212225134U (en) | 2020-05-12 | 2020-05-12 | Anti-drop sucker rod centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212225134U true CN212225134U (en) | 2020-12-25 |
Family
ID=73927263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020776710.4U Expired - Fee Related CN212225134U (en) | 2020-05-12 | 2020-05-12 | Anti-drop sucker rod centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212225134U (en) |
-
2020
- 2020-05-12 CN CN202020776710.4U patent/CN212225134U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20201225 |