CN219826737U - Support type sucker rod centralizer - Google Patents

Abstract

The utility model discloses a supporting type sucker rod centralizer, which comprises a centralizer body, wherein the outer parts of the upper end and the lower end of the centralizer body are fixedly sleeved with lantern rings, a plurality of arch-shaped sheets are connected between the lantern rings in a surrounding manner, a pressing rod is fixed in the middle of the inner sides of the arch-shaped sheets, U-shaped blocks are fixed on the outer wall of the centralizer body at positions corresponding to the pressing rod, the outer ends of the pressing rod penetrate through the inner parts of the U-shaped blocks in a sliding manner, one end of the pressing rod, which is positioned outside the U-shaped blocks, is fixedly sleeved with a pressing ring, a spring sleeved outside the pressing rod is arranged between the inner side of the pressing ring and the outer sides of the U-shaped blocks, positioning columns are inserted between the upper end and the lower end of the arch-shaped sheets in a sliding manner, and positioning holes which are matched with the structures of the positioning columns are formed at the connecting positions of the lantern rings and the upper end and the lower end of the arch-shaped sheets. The supporting type sucker rod centralizer can improve the transverse stability in the use process, is not easy to shake, so that the accuracy of the position is kept, and the practicability is better.

Description

Support type sucker rod centralizer

Technical Field

The utility model relates to the technical field of sucker rod centralizers, in particular to a supporting type sucker rod centralizer.

Background

The sucker rod centralizer is a downhole tool for preventing the eccentric wear of a sucker well. The sucker rod moves up and down in the oil pipe, and the sucker rod and the oil pipe wall are easy to rub due to elastic deformation of the sucker rod, so that the sucker rod is easy to break and drop, the sucker rod centralizer has strong flexibility and is contacted with the inner wall of the oil pipe, the friction between the rod and the pipe can be reduced, and the oil extraction life of the pumping unit is prolonged.

The existing sucker rod centralizer needs to keep a certain gap with the inner surface of the oil pipe when in use, so that the sucker rod centralizer and the inner wall of the oil pipe are prevented from being eccentrically worn, but the sucker rod centralizer has certain shaking due to the influence of factors such as strong vibration, environmental temperature and the like in the use process, so that the problem of position shifting caused by the reduction of locking capacity is solved, and when the sucker rod centralizer is incorrect in position, the sucker rod centralizer cannot play an effective eccentric wear prevention role, so that the practicability is reduced.

Disclosure of Invention

The utility model aims to provide a supporting sucker rod centralizer, which is used for solving the problem that the locking capacity is reduced and position shifting occurs due to certain shaking caused by the influence of factors such as strong vibration, environmental temperature and the like in the using process of the conventional sucker rod centralizer.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a supporting type sucker rod centralizer, includes the centralizer body, the outside of both ends is all fixed the cover and is equipped with the lantern ring about the centralizer body, encircle and be connected with a plurality of arch piece between the lantern ring, the inboard centre of arch piece is fixed with the depression bar, all be fixed with the U-shaped piece with the corresponding position of depression bar on the outer wall of centralizer body, the outer end slip of depression bar runs through to the inside of U-shaped piece, just the depression bar is located the outside one end fixed cover of U-shaped piece and is equipped with the clamping ring, be equipped with the spring of cover at the depression bar outside between the outside of clamping ring and the U-shaped piece, and the upper and lower both ends of arch piece all slide and alternate there is the reference column, the lantern ring all is equipped with the identical locating hole of reference column structure with the junction at both ends about the arch piece.

Preferably, the bottom wall inside the positioning hole is provided with elastic blocks, and the inner ends of the positioning posts extend into the positioning hole and are in pressing contact with the elastic blocks.

Preferably, the joint of the U-shaped block and the pressing rod is embedded with a damping ring, and the inner wall of the damping ring is in sliding connection with the outer wall of the pressing rod.

Preferably, a supporting rod is connected between the upper side and the lower side of the pressing ring and the inner side of the arch piece, and two ends of the supporting rod are respectively hinged with the pressing ring and the arch piece.

Preferably, a soft sheath is connected between the inner side of the arch-shaped piece and the outer wall of the centralizer body, and the soft sheath entirely surrounds the U-shaped block and the outer part of the supporting rod.

Preferably, the arch piece is equipped with four altogether in the outside of centralizer body, just the arch piece is the evenly distributed of encircling shape in the outside of centralizer body.

Compared with the prior art, the utility model has the beneficial effects that: the supporting type sucker rod centralizer can improve the transverse stability in the use process, is not easy to shake, so that the accuracy of the position is kept, and the practicability is better. This supporting type sucker rod centralizer is through evenly encircling in the outside and setting up a plurality of arch piece, when the centralizer body received outside effort in the inside use of oil pipe, the arch piece can drive the depression bar and slide on the U-shaped piece and make the clamping ring produce the compression to the spring, both ends also can drive the inside extrusion elastic block that the reference column stretched into the locating hole about the arch piece simultaneously, this makes the arch piece can be under multiple elastic action stable support on oil pipe's inner wall to keep the lateral stability in the centralizer body use.

Drawings

FIG. 1 is a schematic diagram of a support type sucker rod centralizer of the present utility model;

FIG. 2 is an enlarged schematic view of the support type sucker rod centralizer of the present utility model at A in FIG. 1;

FIG. 3 is a schematic top view of a collar and arch piece connection of a support type sucker rod centralizer of the present utility model;

FIG. 4 is a schematic view of the exterior structure of a centralizer body of a support type sucker rod centralizer of the utility model.

In the figure: 1. a centralizer body; 2. a collar; 3. an arch-shaped sheet; 4. a compression bar; 5. a U-shaped block; 6. a soft sheath; 7. a support rod; 8. a compression ring; 9. a spring; 10. a damping ring; 11. positioning columns; 12. positioning holes; 13. an elastic block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a support type sucker rod centralizer, including centralizer body 1, the outside at the upper and lower both ends of centralizer body 1 all is equipped with lantern ring 2 through the bolt fastening cover, encircle between the lantern ring 2 and be connected with a plurality of arch piece 3, arch piece 3 is equipped with four in total in the outside of centralizer body 1, and arch piece 3 is the evenly distributed of encircleing shape in the outside of centralizer body 1, the centre welding of arch piece 3 inboard has depression bar 4, the corresponding position of depression bar 4 all has U-shaped piece 5 through the screw fixation on the outer wall of centralizer body 1, the outer end of depression bar 4 slides and runs through to the inside of U-shaped piece 5, and the fixed cover of one end that depression bar 4 is located the outside of U-shaped piece 5 is equipped with clamping ring 8, clamping ring 8 and depression bar 4 are integrated into the structure, be equipped with the spring 9 of cover to establish in depression bar 4 outside between the inboard of clamping ring 8 and the outside of U-shaped piece 5, this structure is when centralizer body 1 uses in oil pipe's inside, the lantern ring 2 can be supported on the inner wall of the oil pipe through a plurality of arch sheets 3 connected with each other, and can drive the compression bar 4 to slide on the U-shaped block 5 when the arch sheets 3 are subjected to external acting force, the compression bar 4 can synchronously compress the spring 9 through the compression ring 8 when sliding, the compression bar 4 can buffer acting force born by the arch sheets 3 under elastic acting force of the spring 9, so that the centralizer body 1 can improve the transverse stability in the using process through the arch sheets 3, is not easy to shake, avoids the problem of position shifting caused by the reduction of locking capacity due to certain shake caused by the influence of factors such as strong vibration, environmental temperature and the like in the using process of the centralizer body 1, further ensures the accuracy of the maintaining position of the centralizer body 1, has effective eccentric wear prevention effect and better practicability, the upper end and the lower end of the arch sheet 3 are respectively and slidably inserted with a positioning column 11, the joint of the lantern ring 2 and the upper end and the lower end of the arch sheet 3 is respectively provided with a positioning hole 12 which is matched with the structure of the positioning column 11, the bottom wall inside the positioning hole 12 is fixedly adhered with an elastic block 13, the elastic block 13 is made of elastic rubber material, the inner end of the positioning column 11 is respectively extended into the positioning hole 12 and is in pressing contact with the elastic block 13, the structure synchronously drives the positioning column 11 to extend into the positioning hole 12 to internally extrude the elastic block 13 when the arch sheet 3 is subjected to external acting force, the stability of the supporting of the arch sheet 3 is improved by the positioning column 11 under the elastic acting force of the elastic block 13, the effect of the supporting of the arch sheet 3 on the centralizer body 1 is further improved, the joint of the U-shaped block 5 and the pressing rod 4 is fixedly embedded with a damping ring 10, the inner wall of the damping ring 10 is in sliding connection with the outer wall of the pressing rod 4, the damping ring 10 of the structure can strengthen the friction resistance of the compression bar 4 when sliding on the U-shaped block 5, so that the compression bar 4 can slide on the U-shaped block 5 more stably, thereby effectively improving the effect of the compression bar 4 on buffering and supporting the external acting force received by the arch piece 3, the upper side and the lower side of the compression bar 8 are connected with the support bar 7 between the inner side of the arch piece 3 and the two ends of the support bar 7 are respectively hinged with the compression bar 8 and the arch piece 3 through the pin shafts, the support bar 7 of the structure can play a certain supporting effect on the positions of the upper side and the lower side of the inner side of the arch piece 3, the arch piece 3 can also improve the transverse stability under the supporting acting force of the support bar 7, a soft sheath 6 is connected between the inner side of the arch piece 3 and the outer wall of the centralizer body 1, the soft sheath 6 is made of the existing soft corrugated pipe, the soft sheath 6 integrally surrounds the U-shaped block 5 and the supporting rod 7, and the soft sheath 6 with the structure can realize the integral sealing effect on the connecting mechanism between the inner side of the arch sheet 3 and the outer side of the U-shaped block 5, is not influenced by oil pipe media, and has stronger practicability.

Working principle: when using this support type sucker rod centralizer, firstly, when the inside use of oil pipe is arranged in to centralizer body 1, a plurality of arch piece 3 that is connected between the lantern ring 2 can support on the inner wall of oil pipe, and when the inside stronger effort of outside when centralizer body 1 receives, can drive depression bar 4 earlier after the arch piece 3 atress and slide in the damping circle 10 on U-shaped piece 5, the synchronous clamping ring 8 that makes produces the compression to spring 9 when depression bar 4 slides, at this moment depression bar 4 can cushion the effort that arch piece 3 received under the elastic effort of spring 9, and the clamping ring 8 lateral shifting also can drive bracing piece 7 and produce the activity, support the upper and lower both ends in arch piece 3 inboard when bracing piece 7 is active, the inside extrusion elastomeric block 13 of locating column 11 when arch piece 3 atress also can drive the locating column 11 and stretch into locating hole 12, the stability that the arch piece 3 supported is improved under the elastic effort of elastomeric block 13 to the reference column 11, lateral stability when the inside use of centralizer body 1 like this is better, be difficult for taking place to rock, and can also receive the inside of the annular piece 3 to influence to the annular piece 6, thereby accomplish the sealed medium in series of connection between the outside of U-shaped piece 5, thereby accomplish the whole medium.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (6)

1. The utility model provides a supporting sucker rod centralizer, includes centralizer body (1), its characterized in that: the outside at both ends is all fixed the cover and is equipped with lantern ring (2 about centralizer body (1), encircle between lantern ring (2) and be connected with a plurality of arch piece (3), arch piece (3) inboard centre is fixed with depression bar (4), on the outer wall of centralizer body (1) with depression bar (4) corresponding position all be fixed with U-shaped piece (5), the outside slip of depression bar (4) runs through to the inside of U-shaped piece (5), just the fixed cover of one end that depression bar (4) are located U-shaped piece (5) is equipped with clamping ring (8), be equipped with between the outside of the inboard of clamping ring (8) and U-shaped piece (5) and overlap and establish spring (9) outside depression bar (4), and the upper and lower both ends of arch piece (3) all slide and alternate have reference column (11), the junction at both ends all is equipped with reference column (11) structure identical locating hole (12) about lantern ring (2) and arch piece (3).

2. A support type sucker rod centralizer according to claim 1, wherein: elastic blocks (13) are arranged on the bottom wall of the inside of the positioning hole (12), and the inner ends of the positioning columns (11) extend into the inside of the positioning hole (12) and are in abutting contact with the elastic blocks (13).

3. A support type sucker rod centralizer according to claim 1, wherein: the damping ring (10) is embedded at the joint of the U-shaped block (5) and the compression bar (4), and the inner wall of the damping ring (10) is in sliding connection with the outer wall of the compression bar (4).

4. A support type sucker rod centralizer according to claim 1, wherein: the upper side and the lower side of the compression ring (8) are connected with the supporting rods (7) between the inner sides of the arch-shaped sheets (3), and the two ends of the supporting rods (7) are respectively hinged with the compression ring (8) and the arch-shaped sheets (3).

5. A support type sucker rod centralizer according to claim 4, wherein: a soft sheath (6) is connected between the inner side of the arch-shaped piece (3) and the outer wall of the centralizer body (1), and the soft sheath (6) integrally surrounds the U-shaped block (5) and the outer part of the supporting rod (7).

6. A support type sucker rod centralizer according to claim 1, wherein: the arch-shaped sheets (3) are arranged outside the centralizer body (1) in total, and the arch-shaped sheets (3) are uniformly distributed in a surrounding shape outside the centralizer body (1).