Improved underground traversing device with straight plug

Abstract

The utility model relates to the technical field of power equipment, and discloses an improved underground traversing device with a straight plug, which comprises the straight plug and a cable traversing device main body, one side of the straight plug is provided with a first shell with internal threads, and the corresponding side of the cable traversing device is provided with a second shell with external threads; and the first shell and the second shell are in threaded and clamped connection. The cable penetrating device has the beneficial effects that the straight plug and the cable penetrating device main body are in threaded clamping connection, so that the offshore operation time is shortened, and the installation efficiency is improved; possible damage to a cable insulating layer caused by distortion and rotation of the upper-end cable during downhole installation is prevented; the structure improves the reuse of the cable, prolongs the service life of the cable, and saves the production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to an improved downhole penetrator with a straight plug. Background Art

[0002] The electric pump wellhead device is a very common artificial lift oil production equipment. When there is not enough pressure at the bottom of the well to push the crude oil to form self-flowing ability, it is necessary to place an electric submersible pump into the oil layer to work. The electric submersible pump is usually provided with power by connecting cables. When connecting cables, they will inevitably pass through the electric pump wellhead device. Passing through the wellhead must be done with the help of a cable passer to ensure pressure bearing and sealing during the crossing process.

[0003] A cable passer is a device used to penetrate the tubing hanger and upper flange at the wellhead of an electric submersible pump and connect the downhole electric submersible pump to the surface power supply. It changes the traditional cable passing method and has the characteristics of good safety, high sealing and easy operation. The cable passer includes a cable passer body and a plug.

[0004] In the prior art, the connection between the cable transit body and the adapter and the downhole isolation device has the following disadvantages during installation: 1. Low installation efficiency, increased offshore operation time, and increased cost investment; 2. During downhole installation, the upper end cable may twist and rotate, causing damage to the cable insulation layer. Summary of the Invention

[0005] In order to overcome the shortcomings of the downhole penetrator in the prior art, the present invention proposes an improved downhole penetrator with a straight plug. The detailed technical solution is as follows:

[0006] An improved downhole passer with a straight plug comprises a straight plug and a cable passer body. A first shell with an internal thread is provided on one side of the straight plug, and a second shell with an external thread is provided on the corresponding side of the cable passer. The first shell and the second shell are threaded and snap-fitted together.

[0007] Furthermore, the straight plug includes a screw located on one side, a connecting hole located on the other side and protruding from the straight plug, and a first shell located outside the side wall of the straight plug.

[0008] Furthermore, an insulating sealing gasket, an elastic electrode ring and a conductive tube are also provided in the connecting hole.

[0009] Furthermore, an insulating conductive rod is provided in the main body of the cable crosser; and a red dot for identification is provided on the second shell.

[0010] Furthermore, the second shell includes a connecting portion with an external thread, an inwardly recessed and annular shape, for engaging with the engaging portion of the first shell.

[0011] Furthermore, when the straight plug is threadedly connected to the cable pass-through body, the insulating conductive rod is inserted into the elastic electrode ring through the connecting hole and connected to the conductive cylinder.

[0012] The beneficial effects of the utility model are: utilizing the threaded engagement connection between the straight plug and the cable pass-through body to reduce offshore operation time and improve installation efficiency; and preventing damage to the cable insulation layer caused by twisting and rotation of the upper end cable during downhole installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of a downhole traverser in the prior art.

[0014] Figure 2 It is a structural diagram of the straight plug of the utility model.

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the straight plug of the utility model.

[0016] Figure 4 yes Figure 3 A partial enlarged view of part A.

[0017] Figure 5 It is a structural schematic diagram of the main body of the cable crossing device of the utility model.

[0018] Figure 6 It is a cross-sectional schematic diagram of the main body of the cable crossing device of the present utility model.

[0019] Figure 7 It is a schematic diagram of the connection between the straight plug and the cable pass-through body of the utility model.

[0020] in:

[0021] 100—straight plug; 200—cable penetration body;

[0022] 110—screw; 120—first housing; 130—connecting hole;

[0023] 131 - insulating seal; 132 - elastic electrode ring; 133 - conductive tube;

[0024] 210—first housing; 220—insulated conductive rod;

[0025] 211—red dot; 212—connecting portion; 213—engaging portion. Implementation Method

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0027] The structure of downhole penetrator in the prior art is as follows: Figure 1 As shown, it includes a cable pass-through body 200 and a straight plug 100. The cable pass-through body 200 and the straight plug 100 are connected by welding. This method is more troublesome during offshore operations and cannot eliminate the torque generated by the upper cable.

[0028] Therefore, the utility model proposes an improved downhole penetrator with a straight plug, such as Figures 2 to 7 As shown, it includes two sections, the upper section is a straight plug 100, and the lower section is a cable pass-through body 200.

[0029] The structure of the straight plug 100 is as follows Figure 2 As shown, it includes a screw rod 110 on one side, a connecting hole 130 on the other side and protruding from the straight plug, and a first housing 120 located outside the side wall of the straight plug 200. Figure 3 As shown, the screw 110 is used to connect the cable, a gap is provided between the first shell 120 and the outer wall of the connecting hole 130 , and an internal thread is provided on the inner side of the first shell 120 .

[0030] like Figure 4 As shown, an insulating sealing gasket 131 , an elastic electrode ring 132 communicating with the connecting hole 130 , and a conductive tube 133 connected to the elastic electrode ring 132 are further provided on the inner side of the connecting hole 130 .

[0031] The structure of the cable passing device body 200 is as follows Figure 5 As shown, a second housing 210 with external threads is provided on one side. A red dot 211 for identification is also provided on the second housing 210. When the straight plug 100 is rotated to cover the red dot 211, the threaded connection is completed.

[0032] More specifically, if Figure 6 As shown, the second housing 210 includes an annular connecting portion 212 with external threads and recessed inwards, for engaging with the engaging portion 213 of the first housing 120. An insulating conductive rod 220 is also provided inside the cable pass-through body 200.

[0033] The connection between the straight plug 100 and the cable pass-through body 200 is as follows Figure 7As shown, the first housing 120 and the second housing 210 are connected by screw threads and snap fit to achieve the connection between the straight plug 100 and the cable pass-through body 200. The insulating conductive rod 220 is inserted into the elastic electrode ring 132 through the connection hole 130 and connected to the conductive cylinder 133.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An improved downhole traversing device with a straight plug, comprising a straight plug and a cable traversing device body, characterized in that: A first shell with internal threads is disposed on one side of the straight plug, and a second shell with external threads is disposed on a corresponding side of the cable pass-through; the first shell and the second shell are threaded and snap-fitted.

2. The improved downhole traverser with a straight plug according to claim 1, characterized in that: The straight plug includes a screw rod located on one side, a connecting hole located on the other side and protruding from the straight plug, and a first shell located outside the side wall of the straight plug.

3. The improved downhole traverser with a straight plug according to claim 2, characterized in that: An insulating sealing pad, an elastic electrode ring and a conductive cylinder are also arranged in the connecting hole.

4. The improved downhole traverser with a straight plug according to claim 3, characterized in that: An insulating conductive rod is also arranged in the main body of the cable crosser; and a red dot for marking is arranged on the second shell.

5. The improved downhole traverser with a straight plug according to claim 4, characterized in that: The second shell includes a connecting portion with an external thread, recessed inwards and in an annular shape, and is used for engaging with the engaging portion of the first shell.

6. The improved downhole traverser with a straight plug according to claim 5, characterized in that: The straight plug is threadably connected to the main body of the cable passer, and the insulating conductive rod is inserted into the elastic electrode ring through the connecting hole and connected to the conductive cylinder.

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