CN214705524U

CN214705524U - Halogen-free cross-linked fireproof cable

Info

Publication number: CN214705524U
Application number: CN202120314612.3U
Authority: CN
Inventors: 何四国
Original assignee: Hubei Kaimiduo Zhichuang Technology Co ltd
Current assignee: Hubei Kaimiduo Zhichuang Technology Co ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-11-12
Anticipated expiration: 2031-02-04

Abstract

The utility model discloses a there is not steamed crosslinked fireproof cable, including insulating layer and cable core, the insulating layer adopts the crosslinked polyethylene material to make. The thickness of the insulating layer is set to 1-2 mm. The cable core is formed by hinging a thick copper wire or a plurality of copper wires. The utility model discloses a crosslinked polyethylene material has low cigarette, nontoxic, fire-retardant and high temperature resistance performance advantage as the insulating layer, and is more durable. The utility model is suitable for a rated voltage 450/750V reaches below, has halogen-free, low cigarette, fire-retardant requirement and the high place of safety ring protects the requirement.

Description

Halogen-free cross-linked fireproof cable

Technical Field

The utility model relates to a cable field particularly, relates to a there is not steamed cross-linking fireproof cable.

Background

The cable includes power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable and the like. They are composed of single-strand or multi-strand wires and insulating layers, are used for connecting circuits, electric appliances and the like, and provide higher requirements for cable protection along with the rapid development of power cable burying and laying projects. However, the traditional cable insulation layer is made of polyvinyl chloride materials, is not high-temperature resistant, and can generate a large amount of toxic smoke in case of fire.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a there is not steamed cross-linking fireproof cable to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a halogen-free cross-linked fireproof cable comprises an insulating layer and a cable core, wherein the insulating layer is made of a cross-linked polyethylene material.

The thickness of the insulating layer is set to 1-2 mm.

Furthermore, the cable core is formed by hinging a thick copper wire or a plurality of copper wires.

For example, the cable core is formed by combining 19 copper wires, and the copper wires are combined into the cable core in a twisting mode of 1+6+12 three layers. Meanwhile, the copper wires in the cable core have certain torque.

Polyethylene (PE) crosslinking technology is one of the important means to improve the material properties. The performance of the PE modified by crosslinking can be greatly improved, the comprehensive performances of the PE, such as mechanical property, environmental stress cracking resistance, chemical corrosion resistance, creep resistance, electrical property and the like, are remarkably improved, the temperature resistance grade is remarkably improved, the heat resistance temperature of the PE can be improved from 70 ℃ to more than 100 ℃, and the application field of the PE is greatly expanded.

The cable using the cross-linked polyethylene as the insulation can be heated to 90 ℃ for a long time and can bear an instantaneous short circuit temperature of 170-250 ℃.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model provides a pair of there is not steamed cross-linking fireproof cable, the skin adopts the cross-linked polyethylene material as the insulating layer, has low cigarette, nontoxic, fire-retardant and high temperature resistance performance advantage, and is more durable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a halogen-free crosslinked fireproof cable with a thick copper wire as a cable core.

Fig. 2 is a schematic structural diagram of a halogen-free crosslinked fireproof cable with a cable core of 16 fine copper wires.

Reference numerals:

1. a cable core; 2. a copper wire; 3. an insulating layer.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the halogen-free crosslinked fireproof cable according to the embodiment of the present invention includes an insulating layer 3 and a cable core 1, wherein the insulating layer 3 is made of crosslinked polyethylene.

The thickness of the insulating layer 3 is set to 1-2 mm.

Further, the cable core is composed of a thick copper wire, as shown in fig. 1.

The cable core can also be formed by hinging a plurality of copper wires. For example, the cable core is formed by combining 19 copper wires, and the copper wires are combined into the cable core in a stranding mode of 1+6+12 three layers. Meanwhile, the copper wires in the wire cores have certain torque. As shown in fig. 2.

Through the above technical scheme of the utility model, insulating layer 1 adopts the crosslinked polyethylene material to make.

The utility model is suitable for a rated voltage 450/750V reaches below, has halogen-free, low cigarette, fire-retardant requirement and the high place of safety ring protects the requirement. Such as high-rise buildings, stations, subways, airports, hospitals, large libraries, gymnasiums, villas, residential homes, hotels, hospitals, office buildings, schools, shopping malls and other crowded places.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a there is not steamed crosslinked fireproof cable, its characterized in that includes insulating layer (3) and cable core (1), insulating layer (3) adopt the crosslinked polyethylene material to make, the cable core is formed by 19 copper wires combinations, the copper wire adopts the transposition mode of 1+6+12 three-layer to make up into the cable core.

2. Halogen-free cross-linked fireproof cable according to claim 1, wherein the thickness of the insulating layer (3) is set to 1-2 mm.

3. The halogen-free crosslinked fireproof cable of claim 1, wherein the copper wires in the core have a certain torque.