CN203397751U

CN203397751U - Novel low smoke halogen-free flame retardant cable

Info

Publication number: CN203397751U
Application number: CN201320367941.XU
Authority: CN
Inventors: 芮逸
Original assignee: JIANGSU LONG-E CABLE Co Ltd
Current assignee: JIANGSU LONG-E CABLE Co Ltd
Priority date: 2013-06-25
Filing date: 2013-06-25
Publication date: 2014-01-15
Anticipated expiration: 2023-06-25

Abstract

The utility model provides a low smoke halogen-free flame retardant cable. The cable comprises three groups of cable cores which are integrally wrapped by a halogen-free wrapping band. A lining layer is extruded outside the halogen-free wrapping band. A metal armor layer is arranged outside the lining layer. An outer sheath layer is arranged outside the metal armor layer. The cable cores are formed by extruding conductors and insulating layers, and are symmetrically superimposed at the center of the cable. The low smoke halogen-free flame retardant cable provided by the utility model has the advantages of novel and reasonable structure, good flame retardant effect and long service life, is green and environment-friendly, and can bear certain external mechanical forces.

Description

A kind of novel low-smoke halogen-free inflaming-retarding cable

Technical field

The utility model relates to power cable field, is specifically related to a kind of low-smoke halogen-free inflaming-retarding cable.

Background technology

Power cable is as a kind of transmission of electric energy and distribute the carrier of electric energy to be widely used in industry-by-industry, due to artificial improper use or make on fire the happening occasionally of cable that the impact of extraneous factor such as thunderbolt earthquake etc. causes, according to incompletely statistics, in the fire incident of China's generation in 1996, because cable and wire is caused, just account for 1/3rd, nearly 66% toxic smog producing when being because sucking electric wire burning in fire fatality personnel and death by suffocation, traditional cable generally adopts the material that contains halogen as polyvinyl chloride in order to reach fire-retardant effect, ethylene-propylene rubber etc., halogen containing material can absorb oxygen in a large number while having advantages of burning can make fire extinguish rapidly, but being Combustion Energy, shortcoming gives out high concentration chlorine smog, low visibility makes escape personnel's None-identified escape route, secondly chlorine has very strong toxicity, by contacting with airborne water vapour to generate, there is corrosive hydrogen halides, carbon monoxide, the pernicious gases such as carbon dioxide, along with the enhancing of people's environmental consciousness with in order to reduce the secondary injury that in fire, toxic gas causes human body, low-smoke halogen-free inflaming-retarding cable is also the prior development direction of cable from now on.

Utility model content

The utility model will provide that a kind of fire resistance is superior, and during burning, the amount of being fuming is few, the low-smoke halogen-free inflaming-retarding cable of corrosion-free γ-ray emission.

A kind of low-smoke halogen-free inflaming-retarding cable of technical scheme, three groups of cable cores that comprise the whole parcel of Halogen twining package tape, Halogen twining package tape extrudes outward and is provided with inner covering, inner covering is provided with metal armouring layer outward, metal armouring layer is provided with external sheath layer outward, described cable core is extruded and forms with insulating barrier by conductor, and symmetry is superimposed upon the center of cable.

Further, the cross section of described conductor is 1/3 circular arc, and material is copper conductor, and circular arc can make the connection between conductor tightr, reduces the ampacity that contact resistance improves conductor.

Described insulating barrier adopts IXPE material to make, and THICKNESS CONTROL is between 0.65mm-1.75mm, and IXPE compression strength is high, heat-resisting, corrosion-resistant, light transmittance >=80% during burning, and produce without pernicious gas.

Described external sheath layer adopts the polyolefin polymer of low smoke and zero halogen to make.

Described Halogen twining package tape adopts nonwoven fabrics or without the woven glass fabric of shuttle.

Beneficial effect:

This utility model novel and reasonable structure, good flame retardation effect, long service life, environmental protection and can bear certain mechanical external force.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

In figure: 1, conductor 2, insulating barrier 3, Halogen twining package tape 4, inner covering 5, metal armouring layer 6, external sheath layer

Specific embodiment

A kind of low-smoke halogen-free inflaming-retarding cable, three groups of cable cores that comprise Halogen twining package tape 3 whole parcels, Halogen twining package tape 3 adopts without the woven glass fabric of shuttle, outer the extruding of Halogen twining package tape 3 is provided with inner covering 4, the outer metal armouring layer 5 that is provided with of inner covering 4, the outer external sheath layer 6 that is provided with of metal armouring layer 5, restrictive coating 6 adopts the polyolefin polymer of low smoke and zero halogen to make; Described cable core is extruded and forms with insulating barrier 2 by conductor 1, and symmetry is superimposed upon the center of cable; The cross section of described conductor 1 is 1/3 circular arc, and material is copper conductor, and circular arc can make the connection between conductor tightr, reduces the ampacity that contact resistance improves conductor; Insulating barrier 2 adopts IXPE material to make, and thickness is 1.75mm.

Claims

1. a novel low-smoke halogen-free inflaming-retarding cable, it is characterized in that: it comprises three groups of cable cores of the whole parcel of Halogen twining package tape (3), outer the extruding of Halogen twining package tape (3) is provided with inner covering (4), the outer metal armouring layer (5) that is provided with of inner covering (4), the outer external sheath layer (6) that is provided with of metal armouring layer (5), described cable core extrudes formation by conductor (1) with insulating barrier (2), and symmetry is superimposed upon the center of cable.

2. a kind of novel low-smoke halogen-free inflaming-retarding cable according to claim 1, is characterized in that the cross section of described conductor (1) is 1/3 circular arc, and material is copper conductor.

3. a kind of novel low-smoke halogen-free inflaming-retarding cable according to claim 1, is characterized in that described insulating barrier (2) adopts IXPE material to make, and THICKNESS CONTROL is between 0.65mm-1.75mm.

4. a kind of novel low-smoke halogen-free inflaming-retarding cable according to claim 1, is characterized in that described external sheath layer (6) adopts the polyolefin polymer of low smoke and zero halogen to make.

5. a kind of novel low-smoke halogen-free inflaming-retarding cable according to claim 1, is characterized in that described Halogen twining package tape (3) adopts nonwoven fabrics or without the woven glass fabric of shuttle.