CN213211761U

CN213211761U - Fireproof cable

Info

Publication number: CN213211761U
Application number: CN202021841725.0U
Authority: CN
Inventors: 黄思宏
Original assignee: Xiamen Huale Cable Co ltd
Current assignee: Xiamen Huale Cable Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-05-14
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a fireproof cable, include: the cable comprises four wire groups, the number of the four wire groups is 5, an included angle between every two adjacent four wire groups is 72 degrees, the four wire groups are supported by a pentagonal supporting rod located at the center of the cable body, the outer sides of the four wire groups are sequentially provided with a wrapping tape, a graphene layer, a copper wire shielding layer, a halogen-free flame-retardant polyolefin layer, a double-layer steel belt and an outer sheath from the four wire groups to the four wire groups, and gaps between the four wire groups are provided with filling layers. Its simple structure avoids using traditional single layer insulation's parcel mode to wrap up the drawback of not preventing fires with electric wire and cable, and intensity is high, prevents to warp the damage.

Description

Fireproof cable

Technical Field

The utility model relates to a cable field, in particular to fireproof cable.

Background

It is statistically estimated that the portion due to electrical failure accounts for about 60% in the event of a fire. Along with the increasing understanding of the danger of fire caused by the problems of the electric wires and cables, the requirements for the performances of fire prevention, flame retardance and the like of the electric wires and cables are gradually improved. In case of fire, fire-fighting equipment such as fire elevators and fire pumps need to keep normal operation for a certain time, so that wires and cables for transmitting power of the equipment need to have high fireproof and heat-resistant performance. While a general fire-resistant cable only has single-layer fire protection, such as wrapping mica tapes on a conductor or filling the conductor with flame retardant, but does not have multi-layer fire protection.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a fireproof cable, its simple structure avoids using traditional individual layer insulating layer's parcel mode to wrap up wire and cable and the drawback of not preventing fires, and intensity is high, prevents to warp the damage.

In order to achieve the above object, the utility model adopts the following technical scheme:

a fire-resistant cable, comprising: the cable comprises four wire groups, the number of the four wire groups is 5, an included angle between every two adjacent four wire groups is 72 degrees, the four wire groups are supported by a pentagonal supporting rod located at the center of the cable body, the outer sides of the four wire groups are sequentially provided with a wrapping tape, a graphene layer, a copper wire shielding layer, a halogen-free flame-retardant polyolefin layer, a double-layer steel belt and an outer sheath from the four wire groups to the four wire groups, and gaps between the four wire groups are provided with filling layers.

Further, the inner side of the quad group includes: the four copper conductors form 90 degrees with each other, the outer sides of the copper conductors are wrapped with PE insulating layers, and the outer sides of the four line groups are wrapped with insulating layers.

Furthermore, a tearing rope is arranged on the wrapping tape.

Further, the outer sheath is made of the following materials: PE, PVC or LSZH.

The utility model has the advantages that:

its simple structure avoids using traditional single layer insulation's parcel mode to wrap up the drawback of not preventing fires with electric wire and cable, and intensity is high, prevents to warp the damage.

Drawings

Fig. 1 is a schematic structural view of the present invention;

reference symbol comparison table:

the cable comprises 1-four wire groups, 2-PE insulating layers, 3-copper conductors, 4-filling layers, 5-tearing ropes, 6-pentagonal supporting rods, 7-wrapping tapes, 8-graphene layers, 9-copper wire shielding layers, 10-halogen-free flame-retardant polyolefin layers, 11-insulating layers, 12-double-layer steel strips and 13-outer sheaths.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

In order to make the content of the present invention more clearly understood, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the attached drawings in the embodiment of the present invention.

As shown in fig. 1, a fire-resistant cable includes: four-wire set 1, the quantity of four-wire set 1 is 5, and the contained angle between every adjacent four-wire set is 72 degrees, four-wire set 1 is supported by the pentagonal bracing piece 6 that is located 14 central points of cable body, four-wire set 1 outside is equipped with around band 7, graphite alkene layer 8, copper wire shielding layer 9, halogen-free fire-retardant polyolefin layer 10, double-deck steel band 12 and oversheath 13 by being close to four-wire set 1 to keeping away from four-wire set 1 in proper order, clearance between the four-wire set is equipped with filling layer 4.

The quad 1 includes inside: the four-wire-group-type insulated cable comprises four copper conductors 3 forming 90 degrees with each other, a PE (polyethylene) insulating layer 2 is arranged outside each copper conductor 3, and an insulating layer 11 is arranged outside each four-wire group 1. And the wrapping tape 7 is provided with a tearing rope 5. The outer sheath 13 is made of: PE, PVC or LSZH.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A fire-resistant cable, comprising: four-wire set (1), the quantity of four-wire set (1) is 5, and the contained angle between every adjacent four-wire set is 72 degrees, four-wire set (1) is supported by pentagonal bracing piece (6) that are located cable body (14) central point and put, four-wire set (1) outside is equipped with around band (7), graphite alkene layer (8), copper wire shielding layer (9), halogen-free flame retardant polyolefin layer (10), double-deck steel band (12) and oversheath (13) in proper order to keeping away from four-wire set (1) by being close to four-wire set (1), clearance between the four-wire set is equipped with filling layer (4).

2. A fire-resistant cable according to claim 1, wherein: the inner side of the quad group (1) comprises: the four-wire-group-type insulated cable comprises four copper conductors (3) forming 90 degrees with each other, a PE (polyethylene) insulating layer (2) is wrapped on the outer side of each copper conductor (3), and an insulating layer (11) is wrapped on the outer side of each four-wire group (1).

3. A fire-resistant cable according to claim 1, wherein: and a tearing rope (5) is arranged on the wrapping tape (7).

4. A fire-resistant cable according to claim 1, wherein: the outer sheath (13) is made of the following materials: PE, PVC or LSZH.