CN211654393U

CN211654393U - Multi-core copper conductor cable

Info

Publication number: CN211654393U
Application number: CN202020724080.6U
Authority: CN
Inventors: 陈浩; 陈智
Original assignee: Shanghai Yongjin Cable Group Changxing Co ltd
Current assignee: Shangjin Cable Jiaxing Co ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2020-10-09
Anticipated expiration: 2030-05-06

Abstract

The utility model discloses a multicore copper conductor cable, including the cable core, cable core outside parcel has the internal insulation layer, internal insulation layer outside parcel has composite insulation layer, composite insulation layer outside parcel has the inner cladding, leave the space between composite insulation layer and the inner cladding, the space is the filling layer, the inner chamber packing of filling layer has fire-retardant medium, the outside of inner cladding is equipped with the flame retardant coating, the outside of flame retardant coating is equipped with the copper sheathing. According to the multi-core copper conductor cable provided by the technical scheme, the insulating effect of higher stability is achieved through double matching of the inner insulating layer and the composite insulating layer, the ageing resistance is enhanced, the damage to the insulating layer caused by friction is reduced, the running reliability is improved, and the service life is prolonged.

Description

Multi-core copper conductor cable

Technical Field

The utility model relates to a cable technical field specifically is a multicore copper conductor cable.

Background

The cable structure usually comprises a stranded conductor, an insulating layer is added outside the stranded conductor, and a conductor screen layer is arranged on the medium-high voltage cable. The stranded conductor is specified in the national standard, and a plurality of stranded structures are adopted, namely, the single insulated wire cores are stranded together to form a finished product. The cable with the structure has a certain twisting coefficient when being cabled, so that the length of the whole cable is shortened, and the cost of the cable is increased; secondly, the interphase insulation wire cores are mutually contacted, and certain radial pressure exists between the interphase insulation wire cores, so that interphase breakdown is easily caused; in addition, in the process of laying the line, due to the influence of factors such as external environment and the like for a long time, the wire cores rub against each other, the insulation layer is easily damaged, the interphase breakdown is caused, and the cable is easily subjected to fire due to the influence of the environment. To this end, we propose a multi-core copper conductor cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multicore copper conductor cable to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a multicore copper conductor cable, includes the cable core, cable core outside parcel has the inner insulating layer, inner insulating layer outside parcel has composite insulation layer, composite insulation layer outside parcel has the inner cladding, leave the space between composite insulation layer and the inner cladding, the space is the filling layer, the inner chamber packing of filling layer has fire-retardant medium, the outside of inner cladding is equipped with the flame retardant coating, the outside of flame retardant coating is equipped with the copper sheathing.

Preferably, the composite insulating layer is composed of a mica foil layer, a metal oxide layer and a sizing glass cloth layer, wherein the mica foil layer, the metal oxide layer and the sizing glass cloth layer are sequentially arranged from inside to outside.

Preferably, the metal oxide of the metal oxide layer is one or more of aluminum oxide, zirconium dioxide, silicon dioxide or titanium dioxide.

Preferably, the flame retardant media is a fire resistant fiber.

Preferably, the cable cores are formed by hinging oxygen-free copper wires, and the number of the cable cores is 1-6.

Preferably, the fireproof layer is a wollastonite powder filling layer.

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

the insulating effect with higher stability is achieved through double matching of the inner insulating layer and the composite insulating layer, so that the aging resistance is enhanced, the insulating layer damage caused by friction is reduced, the running reliability is improved, and the service life is prolonged;

and secondly, the flame-retardant medium and the fire-retardant layer arranged outside are arranged in the filling layer, so that the flame-retardant and fire-proof purposes can be achieved.

Drawings

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

FIG. 2 is a schematic view of the composite insulating layer structure of the present invention;

reference numbers in the figures: 1 cable core, 2 internal insulation layers, 3 composite insulation layers, 31 mica foil layers, 32 metal oxide layers, 33 sizing glass cloth layers, 4 inner cladding layers, 5 filling layers, 6 fireproof layers and 7 copper sheaths.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a multi-core copper conductor cable comprises a cable core 1, wherein the cable core 1 is formed by hinging oxygen-free copper wires, the number of the cable cores 1 is 1-6, the cable core has soft and good conductivity, an inner insulating layer 2 is wrapped outside the cable core 1, a composite insulating layer 3 is wrapped outside the inner insulating layer 2, the composite insulating layer 3 consists of a mica foil layer 31, a metal oxide layer 32 and a rubberized glass cloth layer 33, the mica foil layer 31, the metal oxide layer 32 and the rubberized glass cloth layer 33 are sequentially arranged from inside to outside, the aging resistance is enhanced, the operation reliability and the service life are improved, the rubberized glass cloth layer 33 adopts rubberized glass cloth or rubberized insulating paper, the material selection variety is enlarged, the production cost is reduced, the mechanical strength of a product is effectively improved, the metal oxide of the metal oxide layer 32 is one or a mixture of more of aluminum oxide, zirconium dioxide, silicon dioxide or titanium dioxide, the mass ratio of each component of the mixture can be any value according to the requirement;

the outer side of the composite insulating layer 3 is wrapped with an inner cladding 4, the inner cladding 4 is formed by wrapping a ceramic fiber tape with the thickness of 0.6mm, the tensile and compression resistance characteristics of the cable can be effectively improved after the ceramic fiber tape is wrapped by the material, and meanwhile, the ceramic fiber tape still has the characteristics of high insulation, tensile strength and the like at high temperature, so that the stability and rationality of the cable structure can be effectively ensured;

leave the space between compound insulating layer 3 and inner cladding 4, the space is filling layer 5, the inner chamber packing of filling layer 5 has fire-retardant medium, fire-retardant medium is fire-resistant fiber, fire-resistant fiber exposes after inner cladding 4 dissolves, thereby can reach fire-retardant purpose, the outside of inner cladding 4 is equipped with flame retardant coating 6, flame retardant coating 6 is the wollastonite powder filling layer, play fire-resistant insulating effect to the outside of cable, avoid causing bigger loss, the outside of flame retardant coating 6 is equipped with copper sheathing 7, copper sheathing 7 is formed by the anticorrosive copper strips of high conductivity through indulging the welding of rolling line, it is waterproof to have a seal, it is corrosion-resistant, high conductivity, the fusing point can reach 1000 ℃.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A multicore copper conductor cable, includes cable core (1), its characterized in that: the utility model discloses a cable core, including cable core (1), inner insulating layer (2) outside parcel has composite insulation layer (3), composite insulation layer (3) outside parcel has inner cladding (4), leave the space between composite insulation layer (3) and inner cladding (4), the space is filling layer (5), the inner chamber packing of filling layer (5) has fire-retardant medium, the outside of inner cladding (4) is equipped with flame retardant coating (6), the outside of flame retardant coating (6) is equipped with copper sheath (7).

2. The multi-conductor copper conductor cable of claim 1, wherein: the composite insulating layer (3) is composed of a mica foil layer (31), a metal oxide layer (32) and a sizing glass cloth layer (33), wherein the mica foil layer (31), the metal oxide layer (32) and the sizing glass cloth layer (33) are sequentially arranged from inside to outside.

3. The multi-conductor copper conductor cable of claim 2, wherein: the metal oxide of the metal oxide layer (32) is one or a mixture of more of aluminum oxide, zirconium dioxide, silicon dioxide or titanium dioxide.

4. The multi-conductor copper conductor cable of claim 1, wherein: the flame retardant medium is a refractory fiber.

5. The multi-conductor copper conductor cable of claim 1, wherein: the cable cores (1) are formed by hinging oxygen-free copper wires, and the number of the cable cores (1) is 1-6.

6. The multi-conductor copper conductor cable of claim 1, wherein: the fireproof layer (6) is a wollastonite powder filling layer.