CN216250113U

CN216250113U - Flame-retardant cable

Info

Publication number: CN216250113U
Application number: CN202121925033.9U
Authority: CN
Inventors: 滑伟; 张盼
Original assignee: Hebei Zhongrong Cable Co ltd
Current assignee: Hebei Zhongrong Cable Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-04-08
Anticipated expiration: 2031-08-17

Abstract

The utility model relates to the technical field of cables, in particular to a flame-retardant cable which comprises two groups of conducting wires, wherein a first insulating layer wraps the peripheries of the conducting wires, a woven mesh wraps the peripheries of the first insulating layer, a spacer is arranged between the two groups of conducting wires, a second insulating layer wraps the peripheries of the two groups of conducting wires, a flame-retardant device is uniformly wrapped on the periphery of the second insulating layer, clamping plates are arranged on two sides of the flame-retardant device and abutted against the second insulating layer, a transparent observation window is arranged on one side end face of the flame-retardant device, the woven mesh is of a mesh structure woven by silicon rubber, and the woven mesh is tightly attached to the first insulating layer.

Description

Flame-retardant cable

Technical Field

The utility model relates to the technical field of cables, in particular to a flame-retardant cable.

Background

A cable is made of one or more mutually insulated conductors and an outer insulating protective layer, a wire for transmitting power or information from one place to another place is generally a cable similar to a rope formed by twisting several or several groups of wires (at least two wires in each group), each group of wires are mutually insulated and are usually twisted around a center, the whole outer surface is coated with a highly insulating coating, the cable has the characteristics of internal electrification and external insulation, the use scene of the cable is wide and is distributed between streets and buildings, but due to the special properties of the cable, for example, the wires generate heat during conduction to cause heat accumulation, the wires are externally coated with an insulating layer, the cables become fire-leading cables of fire disasters to cause the safety of human life and property, and therefore, a flame-retardant cable is needed to prevent the harm caused by the fire of the cable

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects that heat is accumulated during the working of a lead, the flame-retardant effect of an insulating layer outside the lead is poor and the like in the prior art, and provides a flame-retardant cable.

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

the utility model provides a flame retardant cable, includes the wire, the wire is provided with two sets ofly, the peripheral parcel of wire has the first insulation layer, the peripheral parcel on first insulation layer has the mesh grid, and is two sets of be provided with the spacing block between the wire, it is two sets of the peripheral parcel of wire has the second insulation layer, the peripheral even parcel of second insulation layer has fire retardant device, fire retardant device's both sides all are provided with splint, splint with second insulation layer butt, be provided with transparent observation window on fire retardant device's a side end face.

Preferably, the woven mesh is a mesh structure woven by silicone rubber, and the woven mesh is tightly attached to the first insulating layer.

Preferably, the spacer is a sheet structure made of polyetheretherketone PEEK, and two ends of the spacer are tightly attached to the end face of the inner side of the second insulating layer.

Preferably, a heat conducting filling adhesive is filled between the first insulating layer and the second insulating layer.

Preferably, the flame retardant device is filled with magnesium hydroxide.

The flame-retardant cable provided by the utility model has the beneficial effects that: the woven mesh woven by the silicon rubber has better high temperature resistance and insulating property; the isolating sheet made of the PEEK can isolate two wires, prevent the wires from interfering with each other to generate eddy current, and effectively reduce the heat of the wires; the heat generated by the wire and the heat generated by the external environment can be uniformly dispersed by the heat conducting filling adhesive filled between the first insulating layer and the second insulating layer, so that local heat accumulation is prevented, and the wire is further prevented from being overheated; through the flame retardant device and the magnesium hydroxide filled in the flame retardant device, the magnesium hydroxide can be decomposed into water at high temperature so as to achieve the functions of cooling or fire extinguishing.

Drawings

Fig. 1 is a schematic structural diagram of a flame retardant cable according to the present invention;

FIG. 2 is an enlarged schematic view of a region A of a flame retardant cable according to the present invention;

fig. 3 is a schematic cross-sectional structure diagram of a flame retardant cable according to the present invention.

In the figure: 1. a wire; 2. a first insulating layer; 3. weaving a net; 4. a separator; 5. a second insulating layer; 6. a flame retardant device; 601. a transparent viewing window; 602. and (4) clamping the plate.

Detailed Description

The technical solutions 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 a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, a flame retardant cable comprises a lead 1, wherein the lead 1 is provided with two groups, a first insulating layer 2 wraps the periphery of the lead 1, a woven mesh 3 wraps the periphery of the first insulating layer 2, a spacer 4 is arranged between the two groups of leads 1, a second insulating layer 5 wraps the periphery of the two groups of leads 1, a flame retardant device 6 wraps the periphery of the second insulating layer 5 uniformly, clamping plates 602 are arranged on two sides of the flame retardant device 6, the clamping plates 602 are abutted to the second insulating layer 5, and a transparent observation window 601 is arranged on one side end face of the flame retardant device 6.

The arranged woven mesh 3 woven by the silicon rubber has better high temperature resistance and insulating property; the isolating sheet 4 made of polyether-ether-ketone PEEK can isolate the two wires 1, prevent the wires 1 from interfering with each other to generate eddy current, and effectively reduce the heat generation of the wires 1; the heat conduction filling adhesive filled between the first insulating layer 2 and the second insulating layer 5 can uniformly disperse the heat generated by the lead 1 and the heat generated by the external environment, prevent local heat accumulation and further prevent the lead 1 from overheating; the flame retardant device 6 and the magnesium hydroxide filled in the flame retardant device 6 can be decomposed into water at high temperature so as to achieve the functions of cooling or extinguishing fire.

A working mode; when the electric heating wire works, two ends of the wire 1 are respectively connected with power supply equipment and electric equipment, current is conducted through the two wires 1, the first insulating layer 2 outside the wire 1 is wrapped outside the wire 1 for first layer insulation, the woven mesh 3 wrapped outside the first insulating layer 2 can have higher fire resistance and insulating property, meanwhile, the toughness of the wires 1 can be improved, the two wires 1 are separated by the isolating sheets 4 between the wires 1, the interference between the wires 1 is reduced, the generation of vortex is reduced, the filled heat-conducting filling glue can enable the wires 1 to be heated uniformly and prevent local heat accumulation, the flame retardant device 6 arranged outside the second insulating layer 5 and the magnesium hydroxide filled in the flame retardant device 6 can be decomposed into water at high temperature, so as to achieve the functions of temperature reduction and flame retardance, and the transparent observation window 601 can observe the condition of the magnesium oxide in the flame retardant device 6.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A flame retardant cable comprising a conductor (1), characterized in that: wire (1) is provided with two sets ofly, the peripheral parcel of wire (1) has first insulating layer (2), the peripheral parcel of first insulating layer (2) has woven mesh (3), and is two sets of be provided with between wire (1) spacing block (4), and is two sets of the peripheral parcel of wire (1) has second insulating layer (5), the peripheral even parcel of second insulating layer (5) has fire retardant device (6), the both sides of fire retardant device (6) all are provided with splint (602), splint (602) with second insulating layer (5) butt, be provided with transparent observation window (601) on the terminal surface of fire retardant device (6).

2. A flame retardant cable according to claim 1, wherein: the woven mesh (3) is a mesh structure woven by silicon rubber, and the woven mesh (3) is tightly attached to the first insulating layer (2).

3. A flame retardant cable according to claim 1, wherein: the isolation sheet (4) is of a sheet structure made of polyether-ether-ketone, and two ends of the isolation sheet (4) are tightly attached to the end face of the inner side of the second insulation layer (5).

4. A flame retardant cable according to claim 1, wherein: and heat conduction filling glue is filled between the first insulating layer (2) and the second insulating layer (5).

5. A flame retardant cable according to claim 1, wherein: the flame retardant device (6) is filled with magnesium hydroxide.