Oil well cable perforation lap joint

Abstract

An embodiment of the utility model discloses an oil well cable perforation lap joint, and particularly relates to the technical field of perforation lap joints, which comprises a first insulating casing connected with an oil well cable, a butt joint cover is fixedly arranged at the upper end of the first insulating casing, and a second insulating casing connected with the oil well cable is movably arranged on the inner side of the butt joint cover. One end of the second insulating shell is fixedly provided with a butt joint end, and the butt joint end is inserted into the butt joint cover; a plurality of joint traction devices capable of guiding the first insulating shell to enter an oil well jacking pipe are arranged on the outer surface of the first insulating shell; the outer surface of the first insulating shell is provided with a joint butt joint device which can fixedly butt joint the second insulating shell and the first insulating shell. Through the arrangement of the joint traction device, the first insulating shell can be guided to move in the oil well jacking pipe, the phenomenon that the lap joint moves in the jacking pipe to damage the jacking pipe is avoided, and through the arrangement of the joint butt-joint device, the butt-joint end can be inserted into the butt-joint cover for fixed butt-joint.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of perforated lap joints, and in particular to a perforated lap joint for oil well cables. Background Art

[0002] In the electrical construction work in oil wells, it is often encountered to pull the cable through the underground jacking pipe. Before the cable passes through the jacking pipe, a wire threader is required to pull the wire rope. When the jacking pipe is too long, the wire threader cannot reach the actual jacking pipe length. In addition, when the two ends of the jacking pipe are upturned due to the large arc, two wire threaders are required to hook to complete the pulling work. For this reason, a perforated lap joint is proposed to assist the cable docking in the oil well.

[0003] After searching, for example, the Chinese patent application with application number CN201110417085.X discloses a cable perforated lap joint, in which a sleeve is connected downwardly with a big head pin at the lower end of an upper joint, six hooks are evenly distributed outward on the circumferential wall at the top of the upper joint, and a pulling hole opened to the other side is provided between any two hooks on the joint, and a connecting bolt is provided on the inner hole wall of the sleeve, which can be conveniently connected to the front end of the threader. When the cable with a relatively long top pipe and a relatively large curvature is connected with a threader, when the two threaders pass through the top pipe with a distance of more than meters, one end will start to be pulled back, and when the hooks on the two threaders are connected, they will hook each other, which not only greatly improves labor efficiency, but also increases safety.

[0004] However, when the above technical solution is in use, since the hook is a sharp object, it is inevitable that the top pipe will be scratched due to the sharpness of the hook when the threader is driven to move, and the above technical solution adopts the method of mutual hanging of the hooks to achieve docking. The hooks are not firmly hung when they are hung, resulting in a short circuit of the cable, and it is inevitable that some hooks will not be hung when they are connected, thus affecting the docking effect. Utility Model Content

[0005] To this end, the embodiment of the utility model provides an oil well cable perforated lap joint to solve the problems of pipe jacking damage and cable short circuit caused by sharp hooks and loose hook traction in the prior art.

[0006] To achieve the above object, the utility model provides the following technical solution: an oil well cable perforated joint, comprising a first insulating shell connected to the oil well cable:

[0007] A docking cover is fixedly provided at the upper end of the first insulating shell, a second insulating shell connected to the oil well cable is movably provided inside the docking cover, a docking terminal is fixedly provided at one end of the second insulating shell, and the docking terminal is inserted into the docking cover;

[0008] The outer surface of the first insulating shell is provided with a plurality of joint traction devices capable of guiding the first insulating shell to enter the top pipe of the oil well, and is used to guide the first insulating shell to move in the top pipe of the oil well;

[0009] The joint traction device comprises a hinge seat, which is fixedly arranged on the outer surface of the first insulating shell, a movable rod is fixedly arranged at the movable end of the hinge seat, a movable connecting column is penetrated in the groove at one end of the movable rod, and a roller is movably arranged on the outer surface of the movable connecting column;

[0010] The outer surface of the first insulating shell is provided with a joint docking device capable of fixedly docking the second insulating shell with the first insulating shell, and is used for inserting the docking end into the docking cover for fixed docking.

[0011] In a preferred embodiment, a spring limit block is fixedly provided on one side of the movable rod, and a spring is movably provided on the outer surface of the spring limit block.

[0012] In a preferred embodiment, a spring limiting frame is fixedly provided on the outer surface of the first insulating shell, and the spring limiting frame is located on the outer surface of one end of the spring.

[0013] In a preferred embodiment, the joint docking device includes a plurality of spring plates, which are fixedly arranged on the upper end of the docking cover, and a triangular limiting block is fixedly arranged on the upper end of the spring plates.

[0014] In a preferred embodiment, a first strong magnetic ring is fixedly provided at the inner upper end of the docking cover, and a second strong magnetic ring is fixedly provided at the inner lower end of the docking end.

[0015] In a preferred embodiment, the first strong magnetic circle is attracted to the second strong magnetic circle.

[0016] In a preferred embodiment, a thread groove is respectively formed at one end of the first insulating shell and the other end of the second insulating shell that are away from each other.

[0017] In a preferred embodiment, conductive pillars are fixedly disposed inside the first insulating shell and the second insulating shell, respectively.

[0018] Technical effects and advantages of the utility model:

[0019] The utility model embodiment has the following advantages:

[0020] 1. The utility model is provided with a joint traction device, which is conducive to guiding the first insulating shell to move in the oil well top pipe, avoiding the overlap joint from moving in the top pipe and damaging the top pipe, and making the overlap joint and the cable move more smoothly in the top pipe. The threader is connected to the threader through the thread groove, and the threader is connected to one end of the cable. By pushing the cable, the two insulating shells are relatively moved in the top pipe. The first insulating shell and the second insulating shell are reduced by rollers during the movement process. The friction between the inner wall of the top pipe is reduced, so as to protect the inside of the top pipe from being scratched. The spring pushes the movable rod and the roller. When encountering a tortuous top pipe, the first insulating shell and the second insulating shell can also achieve the effect of moving. Due to the reduction of friction, the force of pushing the cable is reduced. The correction in the top pipe is made by multiple rollers and springs, so that the docking is more accurate;

[0021] 2. The utility model is provided with a joint docking device, which is conducive to inserting the docking end into the docking cover for fixed docking and avoiding short circuit of the cable. The docking end is inserted into the docking cover, and the docking end is clamped by the spring piece and the triangular limit block, so as to achieve a fixing effect. In order to increase the docking stability, a first strong magnetic circle and a second strong magnetic circle are respectively provided at one end of the inner side of the docking cover and one end of the docking end. Through the adsorption of the two strong magnetic circles, the docking of the two conductive columns is more stable, avoiding the problem of leakage short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the side section structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the joint traction device of the utility model;

[0027] Figure 4This is a schematic diagram of the structure of the joint docking device of the utility model;

[0028] In the figure: 1, first insulating shell; 2, joint traction device; 3, joint docking device; 4, second insulating shell; 5, docking cover; 6, docking end; 7, threaded groove; 8, conductive column; 21, hinge seat; 22, movable rod; 23, roller; 24, movable connecting column; 25, spring limit block; 26, spring; 27, spring limit frame; 31, spring piece; 32, triangular limit block; 33, first strong magnetic circle; 34, second strong magnetic circle. DETAILED DESCRIPTION

[0029] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1 and 2 As shown, the utility model provides an oil well cable perforated lap joint, comprising a first insulating shell 1 connected to the oil well cable: a docking cover 5 is fixedly provided on the upper end of the first insulating shell 1, a second insulating shell 4 connected to the oil well cable is movably provided inside the docking cover 5, a docking terminal 6 is fixedly provided at one end of the second insulating shell 4, the docking terminal 6 is inserted into the docking cover 5, a thread groove 7 is respectively provided at the ends of the first insulating shell 1 and the second insulating shell 4 that are away from each other, and a conductive column 8 is respectively fixedly provided inside the first insulating shell 1 and the second insulating shell 4.

[0031] In order to prevent the lap joint from moving in the top pipe and damaging the top pipe, the outer surface of the first insulating shell 1 is provided with a plurality of joint traction devices 2 capable of guiding the first insulating shell 1 into the top pipe of the oil well, and used to guide the first insulating shell 1 to move in the top pipe of the oil well;

[0032] like Figure 3As shown, the joint traction device 2 includes a hinge seat 21, which is fixedly arranged on the outer surface of the first insulating shell 1, and a movable rod 22 is fixedly arranged on the movable end of the hinge seat 21. A movable connecting column 24 is penetrated in the groove at one end of the movable rod 22, and a roller 23 is movably arranged on the outer surface of the movable connecting column 24. A spring limit block 25 is fixedly arranged on one side of the movable rod 22, and a spring 26 is movably arranged on the outer surface of the spring limit block 25. A spring limit frame 27 is fixedly arranged on the outer surface of the first insulating shell 1, and the spring limit frame 27 is located on the outer surface of one end of the spring 26 and is connected through the threaded groove 7. The threader is connected to one end of the cable, and the two insulating shells are moved relative to each other in the top pipe by pushing the cable. The first insulating shell 1 and the second insulating shell 4 are reduced in friction with the inner wall of the top pipe by the roller 23 during movement, thereby protecting the inside of the top pipe from being scratched. The movable rod 22 and the roller 23 are pushed by the spring 26. When encountering a tortuous top pipe, the first insulating shell 1 and the second insulating shell 4 can also be moved. Since the friction is reduced, the force of pushing the cable is reduced. The correction in the top pipe is made by multiple rollers 23 and springs 26, so that the docking is more accurate.

[0033] Furthermore, in order to avoid a short circuit in the cable, a joint docking device 3 is provided on the outer surface of the first insulating housing 1, which can fix the second insulating housing 4 with the first insulating housing 1, and is used to insert the docking terminal 6 into the docking cover 5 for fixed docking;

[0034] like Figure 4 As shown, the joint docking device 3 includes a plurality of spring clips 31, which are fixedly arranged on the upper end of the docking cover 5, a triangular limit block 32 is fixedly arranged on the upper end of the spring clip 31, a first strong magnetic circle 33 is fixedly arranged on the inner upper end of the docking cover 5, and a second strong magnetic circle 34 is fixedly arranged on the inner lower end of the docking terminal 6. The first strong magnetic circle 33 and the second strong magnetic circle 34 are adsorbed to each other, and the docking terminal 6 is inserted into the docking cover 5, and the docking terminal 6 is clamped by the spring clip 31 and the triangular limit block 32, so as to achieve a fixing effect. In order to increase the docking stability, the first strong magnetic circle 33 and the second strong magnetic circle 34 are respectively arranged at one end of the inner side of the docking cover 5 and one end of the docking terminal 6. Through the adsorption of the two strong magnetic circles, the docking of the two conductive columns 8 is more stable, avoiding the problem of leakage short circuit.

[0035] The working principle is as follows: when the utility model is in use, the threader at one end of the two cables is installed in the threaded groove 7 in the first insulating shell 1 and the second insulating shell 4, so that the energized position contacts the two conductive columns 8, and two lap joints are respectively inserted through the two ends of the oil well top pipe. The joint traction device 2 assists the utility model to move in the oil well top pipe to avoid scratching the oil well top pipe. When the two insulating shells meet, they are fixedly docked through the joint docking device 3 to avoid leakage short circuit during docking.

[0036] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. An oil well cable perforated joint, comprising a first insulating shell (1) connected to the oil well cable, characterized in that: A docking cover (5) is fixedly provided at the upper end of the first insulating shell (1), a second insulating shell (4) connected to the oil well cable is movably provided inside the docking cover (5), a docking terminal (6) is fixedly provided at one end of the second insulating shell (4), and the docking terminal (6) is inserted into the docking cover (5); The outer surface of the first insulating shell (1) is provided with a plurality of joint traction devices (2) capable of guiding the first insulating shell (1) into the top pipe of the oil well, and is used to guide the first insulating shell (1) to move in the top pipe of the oil well; The joint traction device (2) comprises a hinge seat (21), the hinge seat (21) is fixedly arranged on the outer surface of the first insulating shell (1), a movable rod (22) is fixedly arranged on the movable end of the hinge seat (21), a movable connecting column (24) penetrates through a groove at one end of the movable rod (22), and a roller (23) is movably arranged on the outer surface of the movable connecting column (24); The outer surface of the first insulating shell (1) is provided with a joint docking device (3) capable of fixedly docking the second insulating shell (4) with the first insulating shell (1), and is used for inserting the docking end (6) into the docking cover (5) for fixed docking.

2. The oil well cable perforated lap joint according to claim 1, characterized in that: A spring stop block (25) is fixedly provided on one side of the movable rod (22), and a spring (26) is movably provided on the outer surface of the spring stop block (25).

3. The oil well cable perforated lap joint according to claim 2, characterized in that: A spring limiting frame (27) is fixedly provided on the outer surface of the first insulating shell (1), and the spring limiting frame (27) is located on the outer surface of one end of the spring (26).

4. The oil well cable perforated lap joint according to claim 1, characterized in that: The joint docking device (3) comprises a plurality of spring sheets (31), wherein the plurality of spring sheets (31) are fixedly arranged on the upper end of the docking cover (5), and a triangular limiting block (32) is fixedly arranged on the upper end of the spring sheet (31).

5. The oil well cable perforated lap joint according to claim 1, characterized in that: A first strong magnetic ring (33) is fixedly provided at the inner upper end of the docking cover (5), and a second strong magnetic ring (34) is fixedly provided at the inner lower end of the docking end head (6).

6. The oil well cable perforated lap joint according to claim 5, characterized in that: The first strong magnetic circle (33) and the second strong magnetic circle (34) are attracted to each other.

7. The oil well cable perforated lap joint according to claim 1, characterized in that: A thread groove (7) is respectively formed at the ends of the first insulating shell (1) and the second insulating shell (4) that are away from each other.

8. The oil well cable perforated lap joint according to claim 1, characterized in that: Conductive pillars (8) are fixedly provided on the inner sides of the first insulating shell (1) and the second insulating shell (4), respectively.

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