CN219267372U

CN219267372U - Multi-core power cable

Info

Publication number: CN219267372U
Application number: CN202320071019.XU
Authority: CN
Inventors: 郑叔军; 王秋艳; 张会智; 郑红; 王强华; 惠元元; 孙芹
Original assignee: Henan Juyuan Electric Cable Co ltd
Current assignee: Henan Juyuan Electric Cable Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-06-27
Anticipated expiration: 2033-01-10
Also published as: CN219267372U8

Abstract

The utility model relates to the technical field of power cables, in particular to a multi-core power cable, which comprises a cable, wherein the cable consists of a cable skin and a cable core body, a shielding mechanism is arranged on the outer wall of the cable core body, a fireproof layer is fixedly connected to the inner wall of the cable skin, and a waterproof layer is fixedly connected to the inner wall of the fireproof layer; the shielding mechanism comprises a shielding barrel which is slidably connected to the outer wall of a cable core body, the outer wall of the shielding barrel is fixedly connected with a waterproof layer through a fixed adhesive tape, the outer wall of the shielding barrel is fixedly connected with a grounding rod at a position away from the fixed adhesive tape, the outer wall of the grounding rod is fixedly connected with a grounding sheet in a cable skin, the outer wall of the grounding sheet is fixedly connected with a sealing strip at a position close to the cable skin, the problem that isolation equipment is not arranged between multiple groups of cable cores arranged inside a multi-core power cable, and mutual interference can occur between the multiple groups of cable cores during operation is solved.

Description

Multi-core power cable

Technical Field

The utility model relates to the technical field of power cables, in particular to a multi-core power cable.

Background

The multi-core power cable is a device for power transmission, but the existing multi-core power cable still has the defects, specifically: there is no isolation equipment between the multiple groups of cable cores arranged in the multi-core power cable, and the multiple groups of cable cores can interfere with each other during operation.

Accordingly, there is a need for a multi-core power cable that addresses the problems set forth in the background art above.

Disclosure of Invention

The present utility model is directed to a multi-core power cable, which solves the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the multi-core power cable comprises a cable body, wherein the cable body consists of a cable surface skin and a cable core body, a shielding mechanism is arranged on the outer wall of the cable core body, a fire-resistant layer is fixedly connected to the inner wall of the cable surface skin, and a waterproof layer is fixedly connected to the inner wall of the fire-resistant layer;

the shielding mechanism comprises a shielding barrel which is slidably connected to the outer wall of the cable core body, the outer wall of the shielding barrel is fixedly connected with a waterproof layer through a fixed adhesive tape, the outer wall of the shielding barrel is fixedly connected with a grounding rod at a position far away from the fixed adhesive tape, the outer wall of the grounding rod is fixedly connected with a grounding sheet in a cable skin, and the outer wall of the grounding sheet is fixedly connected with a sealing strip at a position close to the cable skin.

As a preferable scheme of the utility model, the cable skin is made of polyvinyl chloride plastic, the fire-resistant layer is made of synthetic mica tape, and the waterproof layer is made of EVA modified PE coiled material.

As a preferable scheme of the utility model, the cable core and the shielding mechanism are provided with a plurality of groups, and the grounding plate is provided with a plurality of groups.

As a preferable scheme of the utility model, the shielding cylinder, the grounding rod and the grounding piece are all made of red copper, and the shielding cylinder is of a triangular structural design.

As the preferable scheme of the utility model, the sealing strip is made of silica gel, the grounding plates are of annular structural design, the grounding rods and the grounding plates are provided with a plurality of groups, and the grounding plates are uniformly distributed on the cable skin.

As a preferable scheme of the utility model, the grounding rod sequentially penetrates through the waterproof layer, the fire-resistant layer and the cable skin and extends out of the cable skin, and the surface of the grounding piece is sprayed with the anti-corrosion coating.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the multi-core power cable, the shielding mechanism in the device is utilized to isolate the cable cores, the shielding cylinder on the outer wall of the cable cores is connected with the ground through the grounding rod and the grounding sheet, the potential of each point of the shielding cylinder shell is the same, no potential difference is generated, no current exists, the electric field in the shielding cylinder is zero, the shielding effect can be achieved, multiple groups of cable cores are isolated from each other, the mutual interference among the multiple groups of cable cores is avoided, and the problem that isolation equipment is not arranged among the multiple groups of cable cores arranged in the multi-core power cable and the mutual interference among the multiple groups of cable cores can occur during operation is solved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a front cross-sectional view of the present utility model;

fig. 3 is an enlarged view of fig. 2 a in accordance with the present utility model.

In the figure: 1. a cable; 2. a shielding mechanism; 3. a refractory layer; 4. a waterproof layer; 101. a cable skin; 102. a cable core; 201. a shielding cylinder; 202. fixing the adhesive tape; 203. a grounding rod; 204. a grounding plate; 205. and a sealing gasket.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

In order that the utility model may be readily understood, several embodiments of the utility model will be described more fully hereinafter with reference to the accompanying drawings, in which, however, the utility model may be embodied in many different forms and is not limited to the embodiments described herein, but instead is provided for the purpose of providing a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, the present utility model provides a technical solution:

the multi-core power cable comprises a cable 1, wherein the cable 1 consists of a cable surface skin 101 and a cable core body 102, a shielding mechanism 2 is arranged on the outer wall of the cable core body 102, a fire-resistant layer 3 is fixedly connected to the inner wall of the cable surface skin 101, and a waterproof layer 4 is fixedly connected to the inner wall of the fire-resistant layer 3;

the cable skin 101 is made of polyvinyl chloride plastic, the insulation property of the polyvinyl chloride plastic is good, the electric leakage probability of the cable 1 can be reduced, the fireproof layer 3 is made of a synthetic mica tape, the waterproof layer 4 is made of an EVA modified PE coiled material, the EVA modified PE coiled material has good moisture resistance, external water vapor can be prevented from entering the cable 1, the cable core 102 and the shielding mechanism 2 are provided with a plurality of groups, and the grounding plate 204 is provided with a plurality of groups;

in this embodiment, referring to fig. 2 and 3, the shielding mechanism 2 includes a shielding cylinder 201 slidably connected to the outer wall of the cable core 102, the outer wall of the shielding cylinder 201 is fixedly connected to the waterproof layer 4 through a fixing adhesive tape 202, a grounding rod 203 is fixedly connected to the outer wall of the shielding cylinder 201 at a position far from the fixing adhesive tape 202, a grounding plate 204 is fixedly connected to the outer wall of the grounding rod 203 and within the cable skin 101, and a sealing strip 205 is fixedly connected to the outer wall of the grounding plate 204 and at a position close to the cable skin 101;

the shielding barrel 201, the grounding rod 203 and the grounding piece 204 are all made of red copper, the shielding barrel 201 is of a triangular structure, the sealing strip 205 is made of silica gel, the silica gel can block gaps between the grounding piece 204 and the cable surface 101, water vapor is prevented from entering the cable surface 101, the grounding piece 204 is of an annular structure, the grounding rod 203 and the grounding piece 204 are provided with a plurality of groups, the grounding pieces 204 are uniformly distributed on the cable surface 101, the grounding rod 203 sequentially penetrates through the waterproof layer 4, the fire-resistant layer 3 and the cable surface 101 and extends out of the cable surface 101, anti-corrosion paint is sprayed on the surface of the grounding piece 204, the shielding barrel 201 on the outer wall of the cable core 102 is connected with the ground through the grounding rod 203 and the grounding piece 204, the potential difference of each point of the outer shell of the shielding barrel 201 is the same, no current is generated, the electric field inside the shielding barrel 201 is zero, the shielding effect can be achieved, the cable cores 102 of the plurality of groups are isolated from each other, and mutual interference among the cable cores 102 is avoided.

The working flow of the utility model is as follows: when the multi-core power cable designed by the scheme is in operation, the shielding cylinder 201 on the outer wall of the cable core 102 is connected with the ground through the grounding rod 203 and the grounding piece 204, the electric potential of each point of the outer shell of the shielding cylinder 201 is the same, no potential difference is generated, no current exists, the electric field inside the shielding cylinder 201 is zero, the shielding effect can be achieved, multiple groups of cable cores 102 are isolated from each other, the mutual interference among multiple groups of cable cores 102 is avoided, the insulation property of the cable skin 101 made of polyvinyl chloride plastic is good, the leakage probability of the cable cores 102 can be reduced, the fire resistant layer 3 made of synthetic mica tapes has good fire resistance and heat resistance, the cable cores 102 can work normally in case of fire, the waterproof layer 4 made of EVA modified PE coiled materials has good moisture-proof performance, and external moisture can be prevented from entering the cable 1.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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. A multi-core power cable comprising a cable (1), characterized in that: the cable (1) consists of a cable skin (101) and a cable core body (102), wherein a shielding mechanism (2) is arranged on the outer wall of the cable core body (102), a fire-resistant layer (3) is fixedly connected to the inner wall of the cable skin (101), and a waterproof layer (4) is fixedly connected to the inner wall of the fire-resistant layer (3);

the shielding mechanism (2) comprises a shielding cylinder (201) which is slidably connected to the outer wall of the cable core body (102), the outer wall of the shielding cylinder (201) is fixedly connected with a waterproof layer (4) through a fixing adhesive tape (202), a grounding rod (203) is fixedly connected to the outer wall of the shielding cylinder (201) and at a position far away from the fixing adhesive tape (202), a grounding sheet (204) is fixedly connected to the outer wall of the grounding rod (203) and in the cable skin (101), and a sealing strip (205) is fixedly connected to the outer wall of the grounding sheet (204) and at a position close to the cable skin (101).

2. A multi-core power cable according to claim 1, wherein: the cable skin (101) is made of polyvinyl chloride plastic, the fire-resistant layer (3) is made of synthetic mica tape, and the waterproof layer (4) is made of EVA modified PE coiled material.

3. A multi-core power cable according to claim 1, wherein: the cable core body (102) and the shielding mechanism (2) are provided with a plurality of groups, and the grounding piece (204) is provided with a plurality of groups.

4. A multi-core power cable according to claim 1, wherein: the shielding cylinder (201), the grounding rod (203) and the grounding piece (204) are all made of red copper, and the shielding cylinder (201) is of a triangular structure.

5. A multi-core power cable according to claim 1, wherein: the sealing strip (205) is made of silica gel, the grounding piece (204) is of an annular structure, the grounding rod (203) and the grounding piece (204) are provided with a plurality of groups, and the grounding pieces (204) are uniformly distributed on the cable skin (101).

6. A multi-core power cable according to claim 1, wherein: the grounding rod (203) sequentially penetrates through the waterproof layer (4), the fire-resistant layer (3) and the cable skin (101) and extends out of the cable skin (101), and the surface of the grounding piece (204) is sprayed with anti-corrosion paint.