CN202887858U

CN202887858U - Anti-twisting fireproof power cable

Info

Publication number: CN202887858U
Application number: CN 201220486768
Authority: CN
Inventors: 赵家玉
Original assignee: TONGLING CITY TONGDU SPECIAL CABLE CO Ltd
Current assignee: TONGLING CITY TONGDU SPECIAL CABLE CO Ltd
Priority date: 2012-09-20
Filing date: 2012-09-20
Publication date: 2013-04-17
Anticipated expiration: 2022-09-20

Abstract

The utility model discloses an anti-twisting fireproof power cable comprising a plurality of conductors, each of which is sequentially wrapped by a composite insulation layer and a mica tape to form an insulation wire core. Each of the composite insulation layers is sequentially, from inside to outside, wrapped by a semiconductor nylon band, a polyvinyl chloride insulation layer, and a semi-conductive shielding layer in a coiled manner. The plurality of insulation wire cores are intertwisted together to form cable cores, which are wrapped by a non-woven fabric wrapping tape . The wrapping tape is wrapped by an inner sheath formed by the braiding in an intersected manner, and the inner sheath is wrapped by an outer sheath, in addition, filling layers are disposed among the cable cores and the wrapping tape. The utility model is advantageous in that the structure is simple, the insulation performance and the anti-twisting ability are good, the service lifetime is long; by adopting the design of disposing the mica tape on the outer side of the composite insulation layer, the fireproof performance of the cable can be improved, the cable can bear the long-time burning of the high-temperature flame, and the use safety of the power cable can be guaranteed.

Description

A kind of warp resistance fireproof power cable

Technical field

The utility model relates to the electric wire field, is specially a kind of warp resistance fireproof power cable.

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.Existing power cable insulation performance is not good; fire resistance is relatively poor; when breaking out of fire; the not flame resistant baking of this class cable is difficult to isolated flame, so flame these protective layers that are easy to ablate; make cable directly be subject to the calcination of flame; there is potential safety hazard, and the anti-twist scarce capacity of common power cable, twisted for a long time the useful life that affects easy shortening cable.

The utility model content

The purpose of this utility model provides a kind of warp resistance fireproof power cable, not good to solve power cable insulation performance traditional in the prior art, fire resistance is relatively poor, the warp resistance scarce capacity, be subjected to for a long time distortion to affect easy shortening cable useful life, cable was affected by the flame calcination easily and causes decreasing insulating when fire occured, and had the problem of potential safety hazard.

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

A kind of warp resistance fireproof power cable, include the array conductor, it is characterized in that: every group of conductor all is coated with composite insulation layer and mica tape outward successively, and formation insulated wire cores, described composite insulation layer is followed successively by wrapped semiconductive nylon tape, polyvinyl chloride insulation layer and semiconductive shielding layer from inside to outside, the stranded formation cable core of several insulated wire cores, described cable core is coated with the nonwoven fabrics twining package tape, described twining package tape is coated with the inner sheath that interlacing consists of, described inner sheath is coated with oversheath, is provided with packed layer between described cable core and the twining package tape.

Described a kind of warp resistance fireproof power cable is characterized in that: described oversheath adopts flame-proof polyvinyl chloride to make.

The beneficial effects of the utility model are:

The utility model is simple in structure, adopts the design of composite insulation layer, has effectively promoted the insulation property of power cable; Inner sheath adopts the design of interlacing, and the interlacing structure has larger extending space, has effectively promoted the anti-twist ability of cable; Employing arranges the design of mica tape outside composite insulation layer, effectively promoted the fire-resistance property of cable, can stand for a long time the thermal-flame calcination, has ensured the use safety of power cable.

Description of drawings

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

Embodiment

As shown in Figure 1, a kind of warp resistance fireproof power cable, include array conductor 1, every group of conductor 1 outer composite insulation layer and mica tape 5 of all being coated with successively, and formation insulated wire cores, composite insulation layer is followed successively by wrapped semiconductive nylon tape 2, polyvinyl chloride insulation layer 3 and semiconductive shielding layer 4 from inside to outside, the stranded formation cable core of several insulated wire cores, cable core is coated with nonwoven fabrics twining package tape 6, twining package tape 6 is coated with the inner sheath 7 that interlacing consists of, inner sheath 7 is coated with oversheath 8, is provided with packed layer 9 between cable core and the twining package tape 6.Oversheath 8 adopts flame-proof polyvinyl chloride to make.

Claims

1. warp resistance fireproof power cable, include the array conductor, it is characterized in that: every group of conductor all is coated with composite insulation layer and mica tape outward successively, and formation insulated wire cores, described composite insulation layer is followed successively by wrapped semiconductive nylon tape, polyvinyl chloride insulation layer and semiconductive shielding layer from inside to outside, the stranded formation cable core of several insulated wire cores, described cable core is coated with the nonwoven fabrics twining package tape, described twining package tape is coated with the inner sheath that interlacing consists of, described inner sheath is coated with oversheath, is provided with packed layer between described cable core and the twining package tape.

2. a kind of warp resistance fireproof power cable according to claim 1 is characterized in that: described oversheath adopts flame-proof polyvinyl chloride to make.