CN202887859U

CN202887859U - Fireproof power cable

Info

Publication number: CN202887859U
Application number: CN 201220487888
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 a fireproof power cable, comprising a plurality of conductor sets, wherein each conductor set is orderly wrapped with a composite insulating layer and a mica tape to form one wire core, the composite insulating layer orderly comprises a semi-conductive nylon lapping tape, a polyvinyl chloride insulating layer and a semi-conductive shielding layer from the inner side to the outer side, a plurality of insulating wire cores are intertwisted to form a cable core, the cable core is wrapped with a non-woven fabric lapping tape, the non-woven fabric lapped wrapping tape is wrapped with a sheath layer, and the gap between the cable core and the lapped wrapping tape is filled with a filling layer. The fireproof power cable is simple in structure, effectively increases the insulating property of the power cable through employing the design of a composite insulating layer, also effectively increases the fireproof property of the cable through employing the design of arranging the mica tape outside the composite insulating layer, and can undergo the firing of high temperature flame for a long time, thereby ensuring the use safety of the power cable.

Description

A kind of fireproof power cable

Technical field

The utility model relates to the electric wire field, is specially a kind of 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, and fire resistance is relatively poor, and 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, and makes cable directly be subject to the calcination of flame, has potential safety hazard.

The utility model content

The purpose of this utility model provides a kind of fireproof power cable, not good to solve power cable insulation performance traditional in the prior art, fire resistance is relatively poor, and 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 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, and described cable core is coated with the nonwoven fabrics twining package tape, described twining package tape is coated with restrictive coating, is provided with packed layer between described cable core and the twining package tape.

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

The beneficial effects of the utility model are:

The utility model is simple in structure, adopt the design of composite insulation layer, the insulation property of power cable have effectively been promoted, 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, ensure 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 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 restrictive coating 7, be provided with packed layer 8 between cable core and the twining package tape 6, restrictive coating 7 adopts flame-proof polyvinyl chloride to make.

Claims

1. 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, and described cable core is coated with the nonwoven fabrics twining package tape, described twining package tape is coated with restrictive coating, is provided with packed layer between described cable core and the twining package tape.

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