CN210598853U

CN210598853U - Sucker rod coupling

Info

Publication number: CN210598853U
Application number: CN201921377885.1U
Authority: CN
Inventors: 余敏; 李泽; 胡春伟; 刘彬; 郭东乐; 吴洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-05-22
Anticipated expiration: 2029-08-15

Abstract

The utility model discloses a sucker rod coupling relates to the oil field underground equipment field, and this sucker rod coupling connects including a left side to hoop a section of thick bamboo and connects on the right side to hoop a section of thick bamboo, and a left side connects to hoop a section of thick bamboo and connects on the right side to hoop the inner wall of a section of thick bamboo and all has attacked concave screw, connects on the left side to hoop and is equipped with the middle packing ring of round between a section of thick bamboo and the right side coupling section of thick bamboo, and a right side coupling section of thick bamboo is equipped with the spacing recess of round, is equipped with a plurality. This sucker rod coupling and two sucker rod swivelling joints get up its self can relative rotation, and when so connecting a large amount of sucker rods, the operation is more nimble, and swivelling joint is laborsaving more.

Description

Sucker rod coupling

Technical Field

The utility model relates to an oil field equipment in the pit field relates to a sucker rod coupling particularly.

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. The length of the current oil well is about two kilometers, for example, a victory oil field, and the deepest oil well is more than three kilometers. The sucker rod coupling is used for connecting the sucker rod end to end. The most simple tradition of design of current sucker rod coupling is only the drum structure that has concave screw thread is attacked to an inside, gets up its self unable relative rotation with two sucker rod swivelling joints, when so connecting too much sucker rod, just need drive other sucker rods and rotate together, and it is very hard inconvenient to operate.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who mainly solves provides a sucker rod coupling, and it self can relative rotation to get up with two sucker rod swivelling joints, when so connecting a large amount of sucker rods, the operation is more nimble, and swivelling joint is laborsaving more.

In order to achieve the above object, the present invention provides the following technical solutions:

this sucker rod coupling connects a hoop section of thick bamboo and connects a hoop section of thick bamboo on the right side including the cylinder that the size is the same on a left side, and the concave screw thread has all been attacked to the inner wall that connects a hoop section of thick bamboo and connect a hoop section of thick bamboo on the right side, connects a hoop section of thick bamboo on the left side and connects the junction of a hoop section of thick bamboo on the right side to be equipped with the middle packing ring of round, connects a hoop section of thick bamboo on the right side and connects a binding face of a hoop section of thick bamboo on the left side to be equipped with the wide spacing recess of narrow outside in the round, evenly is equipped with a.

As a further optimization of the technical scheme, the left hoop connecting cylinder, the sliding ball and the connecting rod are all made of stainless steel, and the connecting rod is connected with the left hoop connecting cylinder and the sliding ball through welding.

As a further optimization of the technical scheme, the right collar is made of stainless steel.

As a further optimization of the present solution, the intermediate washer is made of a rubber material.

As the further optimization of the technical scheme, the sliding ball is in clearance fit with the limiting groove, and the diameter of the sliding ball is larger than the width of the opening of the limiting groove.

The beneficial effect of adopting above technical scheme is: the left hoop connecting cylinder and the right hoop connecting cylinder of the sucker rod coupling are connected through the sliding ball and the limiting groove, and the sliding ball can freely slide in the limiting groove, so that the left hoop connecting cylinder and the right hoop connecting cylinder can freely rotate relatively. The threaded rod of the sucker rod is screwed into the left coupling sleeve and the right coupling sleeve respectively, so that the two sucker rods can be connected, the sucker rod coupling and the left coupling sleeve and the right coupling sleeve which are connected with each other in a rotating mode can rotate relatively, and therefore when a large number of sucker rods are connected, the operation is more flexible, and the rotating connection is more labor-saving.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of a sucker rod coupling of the present invention;

figure 2 is the utility model relates to a structural section view of sucker rod coupling.

Wherein, 1-left hoop connecting cylinder, 2-right hoop connecting cylinder, 3-middle gasket, 4-sliding ball, 5-connecting rod, 6-concave thread and 7-limit groove.

Detailed Description

The following describes in detail a preferred embodiment of a sucker rod coupling according to the present invention with reference to the accompanying drawings.

Fig. 1 and 2 show the specific implementation of the utility model relates to a sucker rod coupling:

combine fig. 1 and fig. 2, this sucker rod collar includes the same cylinder left side collar 1 of size and right side collar 2, concave thread 6 has all been attacked to the inner wall of left side collar 1 and right side collar 2, the junction of left side collar 1 and right side collar 2 is equipped with packing ring 3 in the middle of the round, right side collar 2 is equipped with the spacing recess 7 of the interior wide outer narrow of round with the 1 binding face of left side collar, evenly be equipped with a plurality of spherical sliding balls 4 in the spacing recess 7, sliding ball 4 all passes spacing recess 7 and middle packing ring 3 through columniform connecting rod 5 and connects 1 terminal surface of collar with a left side.

Connect a hoop section of thick bamboo 1, sliding ball 4, connecting rod 5 on a left side and make by the stainless steel, sturdy and wear-resisting, and corrosion resisting property is good, and connecting rod 5 all connects hoop section of thick bamboo 1 and sliding ball 4 through welding and a left side to be connected. The right hoop connecting barrel 2 is made of stainless steel, and is firm, wear-resistant and good in corrosion resistance. The middle gasket 3 is made of rubber materials, has good elasticity, and can enable the left coupling barrel 1 and the right coupling barrel 2 to be attached more tightly. The sliding ball 4 and the spacing groove 7 are in clearance fit, the diameter of the sliding ball 4 is larger than the width of the opening of the spacing groove 7, so that the sliding ball 4 can freely slide in the spacing groove 7, and the sliding ball 4 cannot be pulled out from the spacing groove 7. The left coupling barrel 1 and the right coupling barrel 2 can be connected with each other and can rotate relatively.

This sucker rod coupling's left side connects hoop section of thick bamboo 1 and right side and connects hoop section of thick bamboo 2's connection through sliding ball 4 and spacing recess 7 connection, because sliding ball 4 all can freely slide in spacing recess 7 to guarantee that left side hoop section of thick bamboo 1 and right side hoop section of thick bamboo 2 can freely relative rotation, so let left side hoop section of thick bamboo 1 and right side hoop section of thick bamboo 2 can relatively independently with the screw thread post of sucker rod screw and be connected. The threaded rod of the sucker rod is screwed into the left coupling barrel 1 and the right coupling barrel 2 respectively, so that the two sucker rods can be connected, the sucker rod coupling and the left coupling barrel 1 and the right coupling barrel 2 which are connected with each other in a rotating mode can rotate relatively, and therefore when a large number of sucker rods are connected, the operation is more flexible, and the rotating connection is more labor-saving.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept, and these all fall into the protection scope of the present invention.

Claims

1. A sucker rod coupling is characterized in that: the sucker rod coupling comprises a cylindrical left-side coupling sleeve (1) and a right-side coupling sleeve (2) which are the same in size, concave threads (6) are all attacked on the inner wall of the left-side coupling sleeve (1) and the right-side coupling sleeve (2), a circle of middle gasket (3) is arranged at the joint of the left-side coupling sleeve (1) and the right-side coupling sleeve (2), a circle of inner wide and outer narrow limiting groove (7) is arranged on the joint of the right-side coupling sleeve (1) and the right-side coupling sleeve (2), a plurality of spherical sliding balls (4) are evenly arranged in the limiting groove (7), and the sliding balls (4) penetrate through a cylindrical connecting rod (5) to penetrate through the limiting groove (7) and the middle gasket (3) to be connected with the end face of the left-side coupling sleeve (1).

2. The sucker rod coupling of claim 1, wherein: the left hoop connecting cylinder (1), the sliding ball (4) and the connecting rod (5) are all made of stainless steel, and the connecting rod (5) is connected with the left hoop connecting cylinder (1) and the sliding ball (4) through welding.

3. The sucker rod coupling of claim 1, wherein: the right hoop connecting cylinder (2) is made of stainless steel.

4. The sucker rod coupling of claim 1, wherein: the intermediate washer (3) is made of a rubber material.

5. The sucker rod coupling of claim 1, wherein: the sliding ball (4) is in clearance fit with the limiting groove (7), and the diameter of the sliding ball (4) is larger than the width of the opening of the limiting groove (7).