CN203102944U - Low-smoke, halogen-free, high-temperature-resistant, bending-resistant and termite prevention cable - Google Patents

Abstract

The utility model discloses a low-smoke, halogen-free, high-temperature-resistant, bending-resistant and termite prevention cable. The cable comprises a plurality of conductors. A composite fireproof layer and a crosslinked polyethylene insulating layer are successively wrapped outside each conductor to form an insulating core. Each composite fireproof layer successively includes, from inside to outside, a first mica tape, a fireproof inorganic short fiber viscose glue layer and a taped layer. The insulating cores are intertwisted to form a cable core. A second mica tape, a halogen-free taped belt and an inner sheath braided in an intersected manner are successively wrapped outside the cable core. A nylon protective layer and a low-smoke and halogen-free polyolefin outer sheath are successively wrapped outside the inner sheath. A filling layer is disposed between the cable core and the second mica tape. The cable of the utility model has a simple structure, exhibits excellent fireproof performance and bending-resistant performance, is effectively prevented from being bitten by termites, is guaranteed to be safe to use when being burnt under high temperature, is not liable to release a lot of heavy smoke and poisonous and harmful gas during combustion, causes less environment pollution and is convenient for work of rescue.

Description

The termite-proof cable of the high temperature resistant warp resistance of a kind of low smoke and zero halogen

Technical field

The utility model relates to the electric wire field, is specially the termite-proof cable of the high temperature resistant warp resistance 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; be 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 warp resistance scarce capacity; be subjected to distortion to influence easy damage, useful life is short, is bitten by termite easily and has potential safety hazard; a large amount of dense smokes and toxic and harmful be can discharge during burning, rescue work and atmospheric environment influenced.

The utility model content

The purpose of this utility model provides the termite-proof cable of the high temperature resistant warp resistance 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 warp resistance scarce capacity, useful life is short, bitten by termite easily and have potential safety hazard, 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:

The termite-proof cable of the high temperature resistant warp resistance of a kind 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 from inside to outside, fire-resistant inorganic short fiber adhesive-layer and lapping layer, the stranded formation cable core of several insulated wire cores, described cable core is coated with second mica tape outward successively, the inner sheath that Halogen twining package tape and interlacing constitute, described inner sheath is coated with nylon overcoat and low-smoke halogen-free polyolefin oversheath outward successively, is provided with packed layer between the described cable core and second mica tape.

The termite-proof cable of the high temperature resistant warp resistance 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 the composite fire layer and second mica tape, for cable provides double-deck high temperature resistant protection, promoted the resistance to elevated temperatures of cable effectively, has guaranteed cable safe in utilization when being subjected to high temperature sintering; Adopt the nylon overcoat design preferably of hardness and surface flatness, prevented that effectively cable from suffering biting of termite; Adopt the design of Halogen twining package tape and low-smoke halogen-free polyolefin oversheath, make cable when burning takes place, can not discharge a large amount of dense smokes and toxic and harmful, environmental pollution is less, made things convenient for the carrying out of rescue work, and inner sheath adopts the design of interlacing, the interlacing structure has bigger extending space, has promoted the anti-twist ability of cable effectively, has prolonged the useful life of cable.

Description of drawings

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

Embodiment

As shown in Figure 1, the termite-proof cable of the high temperature resistant warp resistance of a kind of low smoke and zero halogen, 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 from inside to outside, fire-resistant inorganic short fiber adhesive-layer 3 and lapping layer 4, the stranded formation cable core of several insulated wire cores, cable core is coated with second mica tape 6 outward successively, the inner sheath 8 that Halogen twining package tape 7 and interlacing constitute, be coated with nylon overcoat 9 and low-smoke halogen-free polyolefin oversheath 10 successively outside the inner sheath 8, be provided with packed layer 11 between the cable core and second mica tape 6.Fire-resistant inorganic short fiber adhesive-layer 3 adopts polycrystal alumina or polycrystalline mullite short fiber to make.

Claims (2)

1. termite-proof cable of the high temperature resistant warp resistance 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 from inside to outside, fire-resistant inorganic short fiber adhesive-layer and lapping layer, the stranded formation cable core of several insulated wire cores, described cable core is coated with second mica tape outward successively, the inner sheath that Halogen twining package tape and interlacing constitute, described inner sheath is coated with nylon overcoat and low-smoke halogen-free polyolefin oversheath outward successively, is provided with packed layer between the described cable core and second mica tape.

2. the termite-proof cable of the high temperature resistant warp resistance 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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