CN203673857U

CN203673857U - Cable with double shielding layers

Info

Publication number: CN203673857U
Application number: CN201320714640.XU
Authority: CN
Inventors: 李亮
Original assignee: Chengdu Jetcom Technology Co Ltd
Current assignee: Chengdu Jetcom Technology Co Ltd
Priority date: 2013-11-14
Filing date: 2013-11-14
Publication date: 2014-06-25
Anticipated expiration: 2023-11-14

Abstract

The utility model relates to the technical field of cables, and provides a cable with double shielding layers. The cable comprises at least three conductors (4). The exteriors of the conductors (4) are respectively wrapped by an insulating layer (6). The conductors (4), which are wrapped by the insulating layers (6), are wrapped by inner shielding layers (9). Filling materials are put in gaps between the inner shielding layers (9) and the insulating layers. Each inner shielding layer (9) is wrapped by a waterproof belt which is wrapped by an outer shielding layer (5). The outer shielding layer (5) is wrapped by an anticorrosion asphalt layer (1) which is wrapped by an inner sheath layer (2). The inner sheath layer (2) is wrapped by an outer sheath layer (11). Electric heating elements are uniformly distributed in the inner sheath layer (2). The inner shielding layer (9) and the outer shielding layer (5) respectively comprises copper foil, and two surfaces of each piece of copper foil are respectively provided with aluminium foil.

Description

A kind of double shield layer cable

Technical field

The utility model relates to cable technology field, and a kind of double shield layer cable is provided.

Background technology

When cable lays at low temperatures, will make cable impaired, when serious, will make cable bad, all will adopt different measures to heat cable when cabling at low temperatures for this reason.Existing cable can not self-heating, and the screening ability of existing cable is bad, and a little less than diamagnetic field energy power, antistatic effect is poor.

Produced in the world Article 1 lv power cable (the wrapped copper conductor of rubber belt) from 1836 so far, electric wire has developed into a large product category of many uses, various in style.China's wires and cables industry, through the development of more than 70 years, has also been obtained larger progress.Be accompanied by Chinese wires and cables industry high speed development, creation of new enterprise quantity constantly rises, and industry overall technology level is largely increased.At present approximately 5000 of the state-owned and above enterprises of scale of China's wires and cables industry, wherein large enterprise has 19, and the gross output value accounts for 11% of whole market share.

Electric wire is to carry the energy, the indispensable basic equipment of transmission of information, and from the today in social informatization, electrified fast development, electric wire has become one of most important basic product in economic construction.Wires and cables industry is again supporting industry, and product must meet the requirement of the each main industry of national economy to electric wire performance, and national economy thinks that most industries are all relevant to electric wire, and its industrial status is very important.China's wires and cables industry is still in developing stage at present, and as the important guide's industry of the development of the national economy, the growth of electric wire production and marketing index is generally higher than total value of production in national economy outline.

Utility model content

the purpose of this utility model is to provide a kind of self heating function that has, and strong, the antistatic interference of diamagnetic field energy power, anti-RF capabilities are strong, a kind of double shield layer cable that screen quality is light.

A kind of double shield layer cable, its spy is, comprise at least 3 conductors 4, the outer all wrap insulate layers 6 of conductor, all conductors 4 that are enclosed with insulating barrier 6 are wrapped up by internal shield 9, filler 7 is filled in gap between internal shield 9 and insulating barrier 6, inner shield 9 outer wrapping waterstops 3, waterstop 3 outer wrapping outer shielding layers 5, outer shielding layer 5 outer wrapping anti-corrosion asphalt layers 1, anti-corrosion asphalt layer 1 outer wrapping inner restrictive coating 2, outer wrapping inner restrictive coating 2 wraps up external sheath layer 11, the interior uniform electrical heating elements of inner restrictive coating 2, described internal shield and outer shielding layer include Copper Foil, Copper Foil two sides is equipped with aluminium foil.

Described filling filler 7 is fireproof water-resisting tape, and it comprises mica layer, and mica layer two sides is the strengthening course of adhering glass fiber mesh establishment respectively, and the film that bonding one deck is made up of water-proofing powder on strengthening course forms water blocking layer.

Described filling filler 7 is glass fibre.

Electrical heating elements is that ultra-thin Nb-Al alloy steel band is made euthermic chip, ultra-thin chromium aluminium or chrome-nickel steel band.

Because the utility model adopts above technical scheme, so possess following beneficial effect:

The utility model makes cable obtain that higher antistatic interference, anti-external magnetic field are disturbed, anti-radio frequency interference ability by inner shield and external shield, and screen adopts aluminium foil to add the structure of Copper Foil, reduced the consumption of copper, and quality alleviates.

The heater element that is provided with of the present utility model, can heat Electricity Federation.

Accompanying drawing explanation

Fig. 1 is structure chart of the present utility model.

Embodiment

A kind of double shield layer cable, its spy is, comprise at least 3 conductors 4, the outer all wrap insulate layers 6 of conductor, all conductors 4 that are enclosed with insulating barrier 6 are wrapped up by internal shield 9, filler 7 is filled in gap between internal shield 9 and insulating barrier 6, inner shield 9 outer wrapping waterstops 3, waterstop 3 outer wrapping outer shielding layers 5, outer shielding layer 5 outer wrapping anti-corrosion asphalt layers 1, anti-corrosion asphalt layer 1 outer wrapping inner restrictive coating 2, outer wrapping inner restrictive coating 2 wraps up external sheath layer 11, the interior uniform electrical heating elements 10 of inner restrictive coating 2, described internal shield and outer shielding layer include Copper Foil, Copper Foil two sides is equipped with aluminium foil.

Described filling filler 7 is glass fibre.

Claims

1. a double shield layer cable, its spy is, comprise at least 3 conductors (4), the outer all wrap insulate layers (6) of conductor, all conductors (4) that are enclosed with insulating barrier (6) are wrapped up by internal shield (9), filler (7) is filled in gap between internal shield (9) and insulating barrier (6), inner shield (9) outer wrapping waterstop (3), waterstop (3) outer wrapping outer shielding layer (5), outer shielding layer (5) outer wrapping anti-corrosion asphalt layer (1), anti-corrosion asphalt layer (1) outer wrapping inner restrictive coating (2), outer wrapping inner restrictive coating (2) parcel external sheath layer (11), uniform electrical heating elements (10) in inner restrictive coating (2), described internal shield and outer shielding layer include Copper Foil, Copper Foil two sides is equipped with aluminium foil.

2. a kind of double shield layer cable according to claim 1, it is characterized in that: described filling filler (7) is fireproof water-resisting tape, it comprises mica layer, mica layer two sides is the strengthening course of adhering glass fiber mesh establishment respectively, and the film that bonding one deck is made up of water-proofing powder on strengthening course forms water blocking layer.

3. a kind of double shield layer cable according to claim 1, is characterized in that: described filling filler (7) is glass fibre.

4. a kind of double shield layer cable according to claim 1, is characterized in that: electrical heating elements (10) is made euthermic chip, ultra-thin chromium aluminium or chrome-nickel steel band for ultra-thin Nb-Al alloy steel band.