CN210443323U

CN210443323U - Cable with improved insulation

Info

Publication number: CN210443323U
Application number: CN201921683840.7U
Authority: CN
Inventors: 臧文丙; 孙超南; 刘金利
Original assignee: Guangdong Huayang Cable Industry Co Ltd
Current assignee: Guangdong Huayang Cable Industry Co Ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-05-01
Anticipated expiration: 2029-10-09

Abstract

The utility model discloses a cable, which comprises an outer protective sleeve and a copper core group arranged in the outer protective sleeve, wherein the copper core group is provided with four groups, the four groups of copper core groups are distributed around the axis of the outer protective sleeve, an insulating skin is wrapped on the copper core group, and a flame-retardant adhesive layer is arranged on the outer surface of the insulating skin; the outer protective sleeve is sequentially provided with an outer surface layer, a tensile layer and a flame-retardant coating with a flame-retardant effect, wherein the outer surface layer and the tensile layer are made of plastic low-smoke halogen-free flame-retardant fuel, and the outer protective sleeve is also internally provided with a separator for separating the copper core groups. The utility model has the advantages of it is following and effect: the cable is not easy to ignite, and is difficult to produce a large amount of dense smoke when being burned, so that the cable is favorable for ensuring the rescue work when a fire disaster happens, and the rescue efficiency is improved.

Description

Cable with improved insulation

Technical Field

The utility model relates to an electric power field, in particular to cable.

Background

At present, with the rapid development of national economy, cables are widely applied to various power stations, such as nuclear power stations, thermal power stations and the like, and various fields such as subway stations, power plants, high-rise buildings, military facilities, oil platforms and the like, so that the requirements of people on the quality and functions of the cables are higher and higher; ordinary cable's single structure, it adopts halogenous material such as PVC insulating layer as the restrictive coating usually, in case take place conflagration polyvinyl chloride insulated wire and cable burning can produce a large amount of dense smokes, often can make rescue personnel and the people in a disaster be stranded by smog or even die by suffocation, makes rescue work be difficult to go on, and rescue inefficiency.

Therefore, a cable is needed urgently, the cable is not easy to ignite, a large amount of dense smoke is difficult to generate when the cable is burnt, rescue work in the case of fire is guaranteed, and rescue efficiency is improved.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a cable, this cable is difficult for being lighted, and is difficult to produce a large amount of dense cigarettes when being burnt, is favorable to guaranteeing the rescue work when taking place the conflagration, improves rescue efficiency.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a cable comprises an outer protective sleeve and copper core groups arranged in the outer protective sleeve, wherein the copper core groups are provided with four groups, the four groups of copper core groups are distributed around the axis of the outer protective sleeve, an insulating sheath wraps the copper core groups, and a flame-retardant adhesive layer is arranged on the outer surface of the insulating sheath; the outer protective sleeve is sequentially provided with an outer surface layer, a tensile layer and a flame-retardant coating with a flame-retardant effect, wherein the outer surface layer and the tensile layer are made of plastic low-smoke halogen-free flame-retardant fuel, and the outer protective sleeve is also internally provided with a separator for separating the copper core groups.

Through adopting above-mentioned technical scheme, copper core group sets up in the outer protective cover with insulating skin, the outer surface layer of outer protective cover hinders fuel by moulding low smoke and zero halogen and makes, mould low smoke and zero halogen and hinder fuel and reach 90 ℃, and mould low smoke and zero halogen and hinder fuel and have good processing property, make this cable be difficult to ignite by external fire source, and the flue gas concentration when outer surface layer is lighted is very low, be favorable to guaranteeing the rescue work when taking place the conflagration, improve rescue efficiency, in addition, the setting of fire-retardant coating and fire-retardant glue film, effectively protected copper core group, prevent that copper core group from being burnt the damage and causing the electric power accident.

The utility model discloses further set up to, the tensile layer is woven by dacron fibre and aramid fiber longitude and latitude and is formed, just the tensile layer with it is fixed to paste outer surface layer inner wall.

Through adopting above-mentioned technical scheme, polyester fiber and aramid fiber's tensile strength is high, and tensile layer and outer surface layer inner wall paste fixedly, has promoted the tensile strength of outer lag, is favorable to preventing that the cable from being broken.

The utility model discloses set up as further, fire-retardant coating by oily fire retardant in tensile layer internal surface is scribbled evenly and is formed.

By adopting the technical scheme, the polyester fiber has hydrophobicity, and is smeared by adopting the oily fire retardant, so that the flame-retardant coating is better bonded on the tensile layer, and the flame-retardant stability of the outer protective sleeve is improved.

The utility model discloses further set up to, insulating skin is made by silicon rubber.

By adopting the technical scheme, the silicon rubber has good insulativity and heat resistance, is nontoxic and harmless and is difficult to ignite.

The utility model discloses further set up to, the separator cross-section is the cross, the separator with outer lag inner wall is fixed, just the separator with outer lag forms four ways and is used for holding four the chamber that holds of copper core group.

Through adopting above-mentioned technical scheme, the separator makes copper core group separate, prevents that copper core group from twining and influencing the work of copper core group when penetrating in the outer protective sheath.

To sum up, the utility model discloses a beneficial technological effect does:

1. the copper core group and the insulating skin are arranged in the outer protective sleeve, the outer surface layer of the outer protective sleeve is made of plastic low-smoke halogen-free flame retardant, the plastic low-smoke halogen-free flame retardant is up to 90 ℃, and the plastic low-smoke halogen-free flame retardant has good processing performance, so that the cable is difficult to ignite by an external fire source, and the smoke concentration of the outer surface layer when ignited is very low, thereby being beneficial to ensuring the rescue work when a fire disaster occurs and improving the rescue efficiency;

2. the tensile strength of the polyester fiber and the aramid fiber is high, and the tensile layer is fixedly adhered to the inner wall of the outer surface layer, so that the tensile strength of the outer protective sleeve is improved, and the cable can be prevented from being broken;

3. the polyester fiber has hydrophobicity, and is coated with the oily fire retardant, so that the fire retardant coating is better bonded on the tensile layer, and the fire resistance stability of the outer protective sleeve is improved.

Drawings

FIG. 1 is a schematic sectional view of the embodiment;

figure 2 is a schematic of the structure of the composite yarn.

In the figure: 1. an outer protective sleeve; 11. an outer surface layer; 12. a tensile layer; 121. a composite yarn; 122. polyester fiber; 123. aramid fibers; 13. a flame retardant coating; 2. a separator; 21. an accommodating chamber; 3. a copper core group; 4. an insulating skin; 41. and the flame-retardant adhesive layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, a cable comprises an outer shield 1, a separator 2, a copper core set 3 and an insulating sheath 4. The outer protective sleeve 1 is in a shape of a circular tube, and the outer protective sleeve 1 is sequentially provided with an outer surface layer 11, a tensile layer 12 and a flame retardant coating 13 from outside to inside. The outer surface layer 11 is made of the plastic low-smoke halogen-free flame retardant, the plastic low-smoke halogen-free flame retardant is up to 90 ℃, and the plastic low-smoke halogen-free flame retardant has good processability, so that the cable is difficult to ignite by an external fire source, and the smoke concentration of the outer surface layer 11 when ignited is very low, thereby being beneficial to ensuring the rescue work when a fire disaster occurs and improving the rescue efficiency. As shown in fig. 2, the tensile layer 12 is formed by compounding composite yarns 121, the composite yarns 121 are formed by warp-weft weaving of polyester fibers 122 and aramid fibers 123, the composite yarns 121 are fixedly adhered to each other, and the tensile layer 12 is fixedly adhered to the inner wall of the outer surface layer 11. The flame-retardant coating 13 is formed by uniformly coating the oily flame retardant on the inner surface of the tensile layer 12, and the bonding degree of the flame-retardant coating 13 and the hydrophobic polyester fiber 122 is high, so that the flame-retardant coating 13 is firmly bonded on the inner wall of the tensile layer 12.

As shown in figure 1, the cross section of the partition body 2 is in a cross shape, the partition body is made of plastics, the length direction of the partition body is consistent with the length direction of the protective sleeve, and the four edges of the partition body 2 are respectively bonded and fixed with the flame-retardant coating 13 on the inner side of the outer protective sleeve 1, so that four containing cavities 21 are formed between the partition body 2 and the outer protective sleeve 1. Copper core group 3 is made by the copper wire combination, and copper core group 3 is equipped with four groups altogether, and four copper core groups 3 of group set up respectively in separating body 2 and four holding chamber 21 that outer lag 1 inner wall formed for copper core group 3 separates in outer lag 1, prevents that four copper core groups 3 from twining and influencing the installation of copper core group 3. The insulating sheath 4 is in a shape of a circular tube, is sleeved on the copper core group 3, abuts against the copper core group 3 and is made of silicon rubber. The outer surface of the insulating sheath 4 is provided with a flame-retardant glue layer 41, and the flame-retardant glue layer 41 is formed by uniformly coating flame-retardant glue on the outer surface of the insulating sheath 4, so that the copper core group 3 in the insulating sheath 4 is prevented from being damaged by flame combustion.

The working principle of the embodiment is as follows: copper core group 3 sets up in outer lag 1 with insulating skin 4, outer surface layer 11 of outer lag 1 hinders fuel by moulding low smoke and zero halogen and makes, mould low smoke and zero halogen and hinder fuel and reach 90 ℃, and mould low smoke and zero halogen and hinder fuel and have good processing property, make this cable be difficult to light by external fire source, and the flue gas concentration when outer surface layer 11 is lighted is very low, be favorable to guaranteeing the rescue work when taking place the conflagration, improve the rescue efficiency, in addition, fire-retardant coating 13 and fire-retardant glue film 41's setting, copper core group 3 has effectively been protected, prevent that copper core group 3 from being damaged and causing the electric power accident by the burning.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A cable, characterized by: the flame-retardant copper core protective sleeve comprises an outer protective sleeve (1) and copper core groups (3) arranged in the outer protective sleeve (1), wherein the copper core groups (3) are provided with four groups, the four groups of copper core groups (3) are distributed around the axis of the outer protective sleeve (1), an insulating skin (4) is wrapped on the copper core groups (3), and a flame-retardant adhesive layer (41) is arranged on the outer surface of the insulating skin (4); the outer protection sleeve (1) is sequentially provided with an outer surface layer (11) made of a plastic low-smoke halogen-free flame retardant material, a tensile layer (12) and a flame retardant coating (13) with a flame retardant effect from outside to inside, and a partition body (2) used for partitioning the copper core group (3) is further arranged in the outer protection sleeve (1).

2. A cable according to claim 1, wherein: tensile layer (12) are woven by dacron fibre (122) and aramid fiber (123) longitude and latitude and are formed, just tensile layer (12) with outer surface layer (11) inner wall is pasted fixedly.

3. A cable according to claim 2, wherein: the flame-retardant coating (13) is formed by uniformly coating an oily flame retardant on the inner surface of the tensile layer (12).

4. A cable according to claim 1, wherein: the insulating skin (4) is made of silicon rubber.

5. A cable according to claim 1, wherein: the cross-section of baffle body (2) is the cross, baffle body (2) with outer lag (1) inner wall is fixed, just baffle body (2) with outer lag (1) forms four ways and is used for holding four the chamber (21) that holds of copper core group (3).