CN203150254U - Low-smoke, halogen free and high temperature resistant tensile cable - Google Patents

Abstract

The utility model discloses a low-smoke, halogen free and high temperature resistant tensile cable, comprising a plurality of groups of conductors. A composite fireproof layer and a crosslinking polyethylene insulating layer are wrapped outside each group of conductors in sequence to form an insulation core; a first mica tape, a fireproof inorganic short fiber bonding layer and a winding and cladding layer are wrapped outside the composite fireproof layer in sequence from interior to exterior; a plurality of insulation cores are intertwisted with a reinforced steel core to form a cable core; a second mica tape, a halogen free winding and cladding belt and a low-smoke halogen free polyolefin sheath layer are wrapped outside the cable core in sequence; and a filling layer is arranged between the cable core and the second mica tape. According to the low-smoke, halogen free and high temperature resistant tensile cable, the structure is simple, good fireproof and tensile performance is provided, the service life is long, the usage safety when the cable is burned at high temperature is guaranteed, much heavy smoke or poisonous and harmful gas generated by burning of the cable are prevented, environment pollution is little, and convenience is provided for rescue work.

Description

A kind of low smoke and zero halogen is high temperature resistant tension cable

Technical field

The utility model relates to the electric wire field, is specially the high temperature resistant tension cable of a kind of low smoke and zero halogen.

Background technology

Along with the fast development of power industry, urban construction, all trades and professions are more and more higher to the requirement of cable.The employing that traditional cable is more the structure of thermal insulation difference, not flame resistant, high temperature.Therefore; in breaking out of fire or when being subjected to temperatures involved, the not flame resistant baking of this class cable is difficult to isolated flame; therefore flame these protective layers that are easy to ablate; make cable directly be subjected to the calcination of flame, cause cable can not work because of short circuit, and common cable resistance to tension deficiency; damaged easily by stretch effects; useful life is short, can discharge a large amount of dense smokes and toxic and harmful during burning, influences rescue work and atmospheric environment.

The utility model content

The purpose of this utility model provides the high temperature resistant tension cable of a kind of low smoke and zero halogen, not good to solve cable fire resistance traditional in the prior art, when being subjected to the flame calcination, breaking out of fire is short-circuited easily, and resistance to tension deficiency, useful life is short, can discharge a large amount of dense smokes and toxic and harmful during burning, influence the problem of rescue work and atmospheric environment.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of low smoke and zero halogen is high temperature resistant tension cable, include the array conductor, it is characterized in that: every group of conductor all is coated with composite fire layer and crosslinked polyetylene insulated layer outward successively, and formation insulated wire cores, described composite fire layer is followed successively by first mica tape, fire-resistant inorganic short fiber adhesive-layer and lapping layer from inside to outside, several insulated wire cores constitute cable core with the stranded back of reinforcement steel core, described cable core is coated with second mica tape, Halogen twining package tape and low-smoke halogen-free polyolefin restrictive coating outward successively, is provided with packed layer between described cable core and second mica tape.

The high temperature resistant tension cable of described a kind of low smoke and zero halogen is characterized in that: described fire-resistant inorganic short fiber adhesive-layer adopts polycrystal alumina or polycrystalline mullite short fiber to make.

The beneficial effects of the utility model are:

The utility model is simple in structure, adopts the design of composite fire layer and second mica tape, for cable provides double-deck high temperature resistant protection, has promoted the resistance to elevated temperatures of cable effectively, has guaranteed the use safety of cable when being subjected to high temperature sintering; Adopt the design stranded with strengthening steel core of several insulated wire cores, promoted the resistance to tension of cable effectively, prolonged the useful life of cable; Adopt the design of Halogen twining package tape and low-smoke halogen-free polyolefin oversheath, make cable can not discharge a large amount of dense smokes and toxic and harmful when burning takes place, environmental pollution is less, has made things convenient for the carrying out of rescue work.

Description of drawings

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

Embodiment

As shown in Figure 1, a kind of low smoke and zero halogen is high temperature resistant tension cable, include array conductor 1, every group of conductor 1 outer composite fire layer and crosslinked polyetylene insulated layer 5 of all being coated with successively, and formation insulated wire cores, the composite fire layer is followed successively by first mica tape 2, fire-resistant inorganic short fiber adhesive-layer 3 and lapping layer 4 from inside to outside, several insulated wire cores constitute cable cores with reinforcement steel core 6 stranded backs, cable core is coated with second mica tape 7, Halogen twining package tape 8 and low-smoke halogen-free polyolefin restrictive coating 9 outward successively, is provided with packed layer 10 between cable core and second mica tape 7.Fire-resistant inorganic short fiber adhesive-layer 3 adopts polycrystal alumina or polycrystalline mullite short fiber to make.

Claims (2)

1. high temperature resistant tension cable of low smoke and zero halogen, include the array conductor, it is characterized in that: every group of conductor all is coated with composite fire layer and crosslinked polyetylene insulated layer outward successively, and formation insulated wire cores, described composite fire layer is followed successively by first mica tape, fire-resistant inorganic short fiber adhesive-layer and lapping layer from inside to outside, several insulated wire cores constitute cable core with the stranded back of reinforcement steel core, described cable core is coated with second mica tape, Halogen twining package tape and low-smoke halogen-free polyolefin restrictive coating outward successively, is provided with packed layer between described cable core and second mica tape.

2. the high temperature resistant tension cable of a kind of low smoke and zero halogen according to claim 1 is characterized in that: described fire-resistant inorganic short fiber adhesive-layer adopts polycrystal alumina or polycrystalline mullite short fiber to make.

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