Sealing structure for cable penetrating device main body

Abstract

The utility model relates to the technical field of power equipment, and discloses a sealing structure for a cable penetrating device main body, which comprises a shell, an insulating rubber layer, an insulating conducting rod positioned in the shell, an insulating sleeve fixedly sleeved on the periphery of the insulating conducting rod, an epoxy resin layer and a sealing body positioned on the inner side of the shell, the insulating sleeve penetrates through and abuts against the sealing body. An O ring is arranged on the outer side of the insulating sleeve and located in the sealing body. And the insulating rubber layer is filled between the insulating sleeve and the shell on one side of the sealing body. The beneficial effects of the utility model are that the connection strength and the sealing performance of the middle part of the insulation sleeve are enhanced by using the sealing body, the O-shaped ring is used for combined sealing, the insulation rubber layer and the epoxy resin layer are separated, and the secondary vulcanization effect between rubber is reduced. According to the utility model, the original product is upgraded and updated, so that the service life of the product is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a sealing structure for a cable penetration device body. Background Art

[0002] With the development of my country's oil exploration and development, the development of oil wells has become more and more vigorous, and the electric submersible pump integrated oil production technology used in conjunction with it has also developed rapidly. The cable crosser is a device used to penetrate the oil pipe hanger and the upper flange on the electric submersible pump oil production wellhead, and connect the downhole electric submersible pump and the well power supply. It has changed the traditional cable crossing method and has the characteristics of good safety, high sealing, and easy operation. The cable crosser includes a cable crosser body and a plug.

[0003] Existing cable penetration device body such as Figure 1 As shown, it includes a shell 100, an insulating conductive rod 300 located inside the shell 100, and an insulating sleeve 400 fixedly mounted on the outer periphery of the insulating conductive rod 300; an insulating rubber layer 200 is filled between the insulating conductive rod 300 and the insulating sleeve 400 on the left side and the shell 100; an epoxy resin layer 500 is filled between the inner side of the insulating sleeve 400 and the shell 100 on the right side.

[0004] The existing cable pass-through body has the problem that the sealing between the insulating sleeve 400 and the inner side of the housing 100 is not reliable, and the secondary vulcanization between rubber and rubber reduces the bonding strength, which poses insulation risks. At the same time, when the temperature and pressure are too high, the sealing of the insulating sleeve 400 is not strong, and liquid may reach the connection part of the insulating sleeve 400 and cause insulation damage. Summary of the invention

[0005] In order to overcome the shortcomings of low bonding strength and weak sealing of the cable through-device body in the prior art, the utility model proposes a sealing structure for the cable through-device body, and its detailed technical solution is as follows:

[0006] A sealing structure for a cable through-device body, comprising a shell, an insulating rubber layer, an insulating conductive rod located inside the shell, an insulating sleeve fixedly sleeved on the outer periphery of the insulating conductive rod, an epoxy resin layer, and also comprising a sealing body located inside the shell; the insulating sleeve penetrates and abuts the sealing body; an O-ring is provided on the outside of the insulating sleeve, and the O-ring is located inside the sealing body; on one side of the sealing body, the insulating rubber layer is filled between the insulating sleeve and the shell; on the other side of the sealing body, the epoxy resin layer is filled between the insulating sleeve and the shell.

[0007] Furthermore, a plurality of environmental grooves are processed on the outer wall of the sealing body and the outer side of the insulating sleeve, and the O-ring is installed in the annular groove.

[0008] Furthermore, a pressing plate is provided on the inner side of the shell adjacent to the sealing body; the pressing plate is connected to the sealing body via screws.

[0009] Furthermore, the sealing body is a metal sealing body, which is embedded in or fixed inside the shell.

[0010] Furthermore, the insulating conductive rod is a PEEK insulating sealed conductive rod.

[0011] The beneficial effects of the utility model are: the sealing body is used to increase the connection strength and sealing performance of the middle part of the insulating sleeve, the O-ring is used for combined sealing, and the insulating rubber layer and the epoxy resin layer are separated to prevent the secondary vulcanization between the rubber and the rubber from causing the sealing failure. The utility model is an upgrade of the original product and further improves the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional schematic diagram of the main body of the cable penetration device in the prior art.

[0013] Figure 2 It is a cross-sectional schematic diagram of the sealing structure of the utility model.

[0014] in:

[0015] 100—shell; 200—insulating rubber layer; 300—insulating conductive rod; 400—insulating sleeve;

[0016] 500—epoxy resin layer; 600—sealing body; 700—O-ring; 800—pressure plate; 900—screw. Implementation

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] A sealing structure for a cable penetration device body, such as Figure 1As shown, it includes a housing 100, an insulating rubber layer 200, an insulating conductive rod 300 located inside the housing 100, an insulating sleeve 400 fixedly sleeved on the outer periphery of the insulating conductive rod 300, and an epoxy resin layer 500. In order to increase the connection strength and sealing degree of the insulating sleeve 400, a sealing body 600 is provided on the inner side of the housing 100. The insulating sleeve 400 penetrates and abuts against the sealing body 600, and is sealed with the sealing body 600 through an O-ring 700. The insulating rubber layer 200 is filled between the insulating sleeve 400 on the left side of the sealing body 600 and the inner side of the housing 100; the epoxy resin layer 500 is filled between the insulating sleeve 400 on the right side of the sealing body 600 and the inner side of the housing 100. The sealing body 600 plays a separating role, so that there is a gap between the insulating rubber layer 200 and the epoxy resin layer 500. Meanwhile, the sealing body 600 can be a metal sealing body, embedded or fixed inside the housing 100, further increasing the connection strength with the insulating sleeve 400, and using an O-ring 700 for combined sealing to improve the sealing strength of the insulating sleeve 400. The insulating conductive rod 300 can be a PEEK insulating sealing conductive rod.

[0019] A plurality of annular grooves are processed on the outer wall of the sealing body 600 and the outer side of the insulating sleeve 400, and the O-rings 700 are installed in the annular grooves.

[0020] In order to further increase the connection strength between the sealing body 600 and the housing 100 , a pressing plate 800 is further provided on the inner side of the housing 100 adjacent to the sealing body 600 , and the pressing plate 800 is connected to the sealing body 600 via screws 900 .

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a cable penetration device body, comprising a shell, an insulating rubber layer, an insulating conductive rod located inside the shell, an insulating sleeve fixedly sleeved on the outer periphery of the insulating conductive rod, and an epoxy resin layer, characterized in that: It also includes a sealing body located on the inner side of the shell; the insulating sleeve penetrates through and abuts against the sealing body; an O-ring is provided on the outer side of the insulating sleeve, and the O-ring is located in the sealing body; on one side of the sealing body, the insulating rubber layer is filled between the insulating sleeve and the shell; on the other side of the sealing body, the epoxy resin layer is filled between the insulating sleeve and the shell.

2. The sealing structure for the cable penetration device body according to claim 1, characterized in that: A plurality of annular grooves are processed on the outer wall of the sealing body and the outer side of the insulating sleeve, and the O-rings are installed in the annular grooves.

3. The sealing structure for the cable penetration device body according to claim 1, characterized in that: A pressing plate is also arranged on the inner side of the shell adjacent to the sealing body; the pressing plate is connected to the sealing body via screws.

4. The sealing structure for the cable penetration device body according to any one of claims 1 to 3, characterized in that: The sealing body is a metal sealing body, which is embedded in or fixed inside the shell.

5. The sealing structure for the cable penetration device body according to any one of claims 1 to 3, characterized in that: The insulating conductive rod is a PEEK insulating sealed conductive rod.

Images