CN216341949U

CN216341949U - Anti-corrosion and anti-eccentric wear sucker rod coupling

Info

Publication number: CN216341949U
Application number: CN202122973303.XU
Authority: CN
Inventors: 李湘君
Original assignee: Yancheng Xiangshun Valve Industry Co ltd
Current assignee: Yancheng Xiangshun Valve Industry Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-04-19
Anticipated expiration: 2031-11-30

Abstract

The utility model relates to the field of sucker rod couplings, in particular to an anti-corrosion and anti-eccentric-wear sucker rod coupling, which comprises a coupling, wherein a sucker rod is arranged in the outer side of the coupling, a toothed ring group for preventing the sucker rod and the coupling from loosening is arranged between the sucker rod and the coupling, the end part of the inner side of the coupling is fixedly connected with a fixed sleeve, and a sliding column for changing the whole length of the coupling is connected in the fixed sleeve in a sliding way, and the anti-corrosion and anti-eccentric-wear sucker rod coupling has the beneficial effects that: according to the utility model, through the structure of adding the gear ring group, the thread connection fixity of the sucker rod and the coupling is reinforced by the mutual meshing of the two gear ring gear blocks, and the crude oil is prevented from immersing the connection part of the coupling and the sucker rod to cause the thread connection loosening of the coupling and the sucker rod; through the sliding structure of fixed sleeve and traveller for the whole length of sucker rod can carry out certain range's change, has avoided adding a sucker rod overlength or the too short condition of less sucker rod, gives the sucker rod through the elasticity of spring simultaneously and receives the binding power at the fixed back in both ends, strengthens its and coupling's fixed stability.

Description

Anti-corrosion and anti-eccentric wear sucker rod coupling

Technical Field

The utility model relates to the field of sucker rod coupling, in particular to an anti-corrosion and anti-eccentric-wear sucker rod coupling.

Background

The sucker rod is a slender rod piece of the pumping well, and is connected with a polished rod at the upper part and an oil well pump at the lower part to play a role in transmitting power. The length of a single sucker rod is 7.62 or 8 meters and 9.14 meters, the material of the sucker rod is generally low carbon alloy steel, the low carbon alloy steel is subjected to quenching and tempering treatment, the low carbon alloy steel is connected with one another by internal threads in an oil pipe and extends to a piston at an underground oil layer, and oil is pumped by reciprocating motion.

At present, most of sucker rods are connected with each other through couplings and are fixed by screwing with the couplings, and after the sucker rods are driven to rotate by a pump, the connecting parts of the sucker rods and the couplings are easily loosened, so that the sucker rods are broken.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-corrosion and anti-eccentric-wear sucker rod coupling, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the anti-corrosion and anti-eccentric wear sucker rod coupling comprises a coupling, a sucker rod is installed in the outer side of the coupling, a toothed ring group for preventing the sucker rod and the coupling from loosening is installed between the sucker rod and the coupling, a fixing sleeve is fixedly connected to the end part of the inner side of the coupling, a sliding column for changing the overall length of the coupling is connected in the fixing sleeve in a sliding mode, and springs for enabling the fixing sleeve to slide and reset on the sliding column are arranged at the two ends of the sliding column.

Preferably, the coupling is set up to corrosion-resistant wear-resisting structure, and the outside of coupling is provided with the opening, is provided with the thread groove with the mutual spiro union of sucker rod tip threaded rod in the opening, and the overcoat has the ring gear group on the sucker rod.

Preferably, the gear ring set is formed by reversely splicing two identical gear rings, two faces of the two gear rings are respectively provided with gear blocks with different specifications, and one face, facing inwards, of the gear rings on two sides is meshed with one another.

Preferably, the middle part of the inner side of the coupling is provided with a fixed sleeve, one side of the fixed sleeve, which is far away from the coupling, is provided with a chute with an opening, a sealing ring is arranged at the opening of the chute, and the chute is square.

Preferably, the fixed sleeves are arranged on the left side and the right side of the sliding column and are in sliding connection with the sliding column, the sliding column is square, and the sealing ring is attached to the outer wall of the sliding column.

Preferably, the left and right ends of the sliding column are fixedly connected with limit plates for preventing the fixing sleeve from sliding off the sliding column.

Preferably, the limiting plate is matched with the cross section of the sliding chute, the middle part of the outer side of the limiting plate is fixedly connected with the end part of the inner side of the spring, and the end part of the outer side of the spring is fixedly connected with the inner wall of the sliding chute.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, through the structure of adding the gear ring group, the thread connection fixity of the sucker rod and the coupling is reinforced by the mutual meshing of the two gear ring gear blocks, and the crude oil is prevented from immersing the connection part of the coupling and the sucker rod to cause the thread connection loosening of the coupling and the sucker rod; through the sliding structure of fixed sleeve and traveller for the whole length of sucker rod can carry out certain range's change, has avoided adding a sucker rod overlength or the too short condition of less sucker rod, gives the sucker rod through the elasticity of spring simultaneously and receives the binding power at the fixed back in both ends, strengthens its and coupling's fixed stability.

Drawings

FIG. 1 is a three-dimensional view of the structure of the present invention;

FIG. 2 is a cross-sectional three-dimensional view of the present invention;

FIG. 3 is a cross-sectional view of the structure of the present invention;

FIG. 4 is a view showing the structure at A in FIG. 2 according to the present invention.

In the figure: coupling 1, fixed sleeve 2, spout 21, sealing washer 22, traveller 3, limiting plate 31, spring 4, sucker rod 5, ring gear group 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: anticorrosive anti-eccentric sucker rod coupling, including coupling 1, install sucker rod 5 in coupling 1's the outside, install between sucker rod 5 and coupling 1 and prevent that both from loosening the ring gear group 6 of taking off.

The end part of the inner side of the coupling 1 is fixedly connected with a fixed sleeve 2, and a sliding column 3 which changes the whole length of the coupling 1 is connected in the fixed sleeve 2 in a sliding mode.

The two ends of the sliding column 3 are provided with springs 4 which enable the fixed sleeve 2 to slide and reset on the sliding column 3.

Coupling 1 sets up to corrosion-resistant wear-resisting structure, and the outside of coupling 1 is provided with the opening, is provided with the thread groove with 5 tip threaded rods of sucker rod looks spiro union in the opening, and the overcoat has toothed ring group 6 on sucker rod 5.

The gear ring group 6 is formed by reversely splicing two identical gear rings, two faces of the two gear rings are respectively provided with gear blocks with different specifications, and one face of the gear ring at two sides, which faces inwards, is meshed with each other.

The inboard mid-mounting of coupling 1 has fixed sleeve 2, and one side that fixed sleeve 2 kept away from coupling 1 is provided with spout 21 that has the open-ended, and the opening part of spout 21 is provided with sealing washer 22, and spout 21 sets up to square.

The fixed sleeve 2 is installed on the left and right sides of the sliding column 3 and is connected with the sliding column 3 in a sliding mode, the sliding column 3 is square, and the sealing ring 22 is attached to the outer wall of the sliding column 3.

The left and right ends of the strut 3 are fixedly connected with limit plates 31 for preventing the fixing sleeve 2 from sliding off the strut 3.

The limiting plate 31 is matched with the cross section of the sliding chute 21, the middle part of the outer side of the limiting plate is fixedly connected with the end part of the inner side of the spring 4, and the end part of the outer side of the spring 4 is fixedly connected with the inner wall of the sliding chute 21.

The working principle is as follows: the threaded rod at the end of the sucker rod 5 is aligned with the thread groove on the outside of the coupling 1, and the set of rings 6 is threaded onto the threaded rod.

The threaded rod at the end of the sucker rod 5 is fixed by screwing with the threaded groove so that the threaded rod is inserted into the bottom of the coupling 1.

Through the occlusion of the tooth blocks on the inner sides of the two tooth rings, the threaded rod of the coupling 1 and the sucker rod 5 are prevented from sliding or loosening.

After the multi-segment sucker rod 5 and the plurality of couplings 1 are fixed, the bottom of the sucker rod 5 is inserted into an oil well and connected with a pump.

The top of the sucker rod 5 is now above the well by squeezing or pulling the top of the sucker rod 5 downward.

The top of the sucker rod 5 is in a convenient position to operate by the elastic force of the spring 4 and the sliding coupling between the sliding column 3 and the fixed sleeve 2.

Utilize the pump machine to drive sucker rod 5 and rotate, because spout 21 and the even square structure of traveller 3 for unable rotation between coupling 1.

Make sucker rod 5 pass through coupling 1 and drive adjacent sucker rod 5 and carry out the same rotation of rotational speed to this makes the pump machine upwards discharge the oil in with the oil well.

The outer wall of coupling 1 sets up to wear-resisting corrosion-resistant structure for coupling 1 can not take place wearing and tearing with the collision of oil pipe, prevents simultaneously that the oil well from causing the corruption to coupling 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Anticorrosive anti-eccentric sucker rod coupling, including coupling (1), its characterized in that: install sucker rod (5) in the outside of coupling (1), install between sucker rod (5) and coupling (1) and prevent that the ring gear group (6) that both pine takes off, the medial extremity fixedly connected with fixed sleeve (2) of coupling (1), sliding connection has traveller (3) that make the whole length of coupling (1) change in fixed sleeve (2), and the both ends of traveller (3) are provided with and make fixed sleeve (2) slide spring (4) that reset on traveller (3).

2. The anti-corrosion and anti-eccentric-wear sucker rod coupling of claim 1, which is characterized in that: coupling (1) sets up to corrosion-resistant wear-resisting structure, and the outside of coupling (1) is provided with the opening, is provided with the thread groove with the mutual spiro union of sucker rod (5) tip threaded rod in the opening, and the overcoat has ring gear group (6) on sucker rod (5).

3. The anti-corrosion and anti-eccentric-wear sucker rod coupling of claim 2, wherein: the gear ring set (6) is formed by reversely splicing two identical gear rings, two faces of the two gear rings are respectively provided with gear blocks with different specifications, and one face of each gear ring at two sides is meshed with the corresponding gear block at the inner side.

4. The anti-corrosion and anti-eccentric-wear sucker rod coupling of claim 1, which is characterized in that: the coupling is characterized in that a fixing sleeve (2) is mounted in the middle of the inner side of the coupling (1), a sliding groove (21) with an opening is formed in one side, away from the coupling (1), of the fixing sleeve (2), a sealing ring (22) is arranged at the opening of the sliding groove (21), and the sliding groove (21) is square.

5. The anti-corrosion and anti-eccentric-wear sucker rod coupling of claim 4, wherein: the fixed sleeves (2) are installed on the left side and the right side of the sliding column (3) and are in sliding connection with the sliding column (3), the sliding column (3) is square, and the sealing rings (22) are attached to the outer wall of the sliding column (3).

6. The anti-corrosion and anti-eccentric-wear sucker rod coupling of claim 5, wherein: the left and right ends of the sliding column (3) are fixedly connected with limit plates (31) for preventing the fixing sleeve (2) from sliding off the sliding column (3).

7. The anti-corrosion and anti-eccentric-wear sucker rod coupling of claim 6, wherein: the limiting plate (31) is matched with the cross section of the sliding chute (21), the middle part of the outer side of the limiting plate is fixedly connected with the end part of the inner side of the spring (4), and the end part of the outer side of the spring (4) is fixedly connected with the inner wall of the sliding chute (21).