CN209880233U

CN209880233U - Industrial high-voltage flame-retardant wire

Info

Publication number: CN209880233U
Application number: CN201920831353.4U
Authority: CN
Inventors: 但海; 程志军; 马宝庆
Original assignee: Wuhan Gold Medal Electrician Ltd By Share Ltd
Current assignee: Wuhan Gold Medal Electrician Ltd By Share Ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2019-12-31
Anticipated expiration: 2029-06-03

Abstract

The utility model discloses an industrial high-pressure flame-retardant electric wire, include: the flame-retardant cable comprises an insulating layer, a conductive core wire and a flame-retardant wire, wherein the insulating layer is wrapped on the conductive core wire, the outer peripheral surface of the insulating layer is provided with a plurality of major arc-shaped grooves, and each major arc-shaped groove is arranged along the length direction of the conductive core wire; the flame-retardant wires are in one-to-one corresponding clamping connection with the U-shaped grooves; the flame retardant wire comprises a protective layer and a flame retardant filled in the protective layer, wherein the flame retardant is ammonium polyphosphate; after the local fire of the industrial high-voltage flame-retardant wire is ignited, the protective layer 31 is damaged after burning, and at the moment, the ammonium polyphosphate is decomposed by heat and is decomposed by heat to generate poly/polyphosphoric acid (strong dehydrating agent) to promote the dehydration and carbonization of the surface of organic matters. And the insulation layer is covered by the oxide of the non-volatile phosphorus and polyphosphoric acid after the insulation layer is expanded by heat, so that air is isolated, and the purpose of flame retardance is achieved.

Description

Industrial high-voltage flame-retardant wire

Technical Field

The utility model relates to an electric wire technical field, concretely relates to fire-retardant electric wire of industrial high pressure.

Background

At present, high-voltage wires with wrapping layers used in some factories are expensive, and when a local fire disaster occurs in the factory, local fire points can burn along the high-voltage wires, so that the whole high-voltage wire is completely burnt, and great economic loss is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned technique not enough, provide a fire-retardant electric wire of industrial high pressure, solve among the prior art local ignition point can be along the high-voltage line burning for the whole technical problem that the high-voltage line is whole to be burnt out.

In order to achieve the technical purpose, the technical scheme of the utility model provide a fire-retardant electric wire of industrial high pressure, include: the flame-retardant cable comprises an insulating layer, a conductive core wire and a flame-retardant wire, wherein the insulating layer is wrapped on the conductive core wire, the outer peripheral surface of the insulating layer is provided with a plurality of major arc-shaped grooves, and each major arc-shaped groove is arranged along the length direction of the conductive core wire; the flame-retardant wires are in one-to-one corresponding clamping connection with the U-shaped grooves; the flame-retardant wire comprises a protective layer and a flame retardant filled in the protective layer, wherein the flame retardant is ammonium polyphosphate.

Compared with the prior art, the beneficial effects of the utility model include: after the local part of the industrial high-voltage flame-retardant wire is ignited by fire, the protective layer is damaged after being burnt, and at the moment, ammonium polyphosphate is decomposed by heat and is decomposed by heat to generate poly/polyphosphoric acid (strong dehydrating agent) to promote the dehydration and carbonization of the surface of organic matters. And the insulation layer is covered by the oxide of the non-volatile phosphorus and polyphosphoric acid after the insulation layer is expanded by heat, so that air is isolated, and the purpose of flame retardance is achieved. Ammonium polyphosphate is heated to decompose and releases nitrogen and ammonia, and these gases are difficult for burning, play the oxygen in the dilution air to further block the supply of oxygen, avoided the intensity of a fire to burn along the electric wire, reduce the loss of fire.

Drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of an industrial high-voltage flame-retardant electric wire provided by the present invention.

Fig. 2 is a schematic cross-sectional structure view of another embodiment of the industrial high-voltage flame-retardant electric wire provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-2, the present embodiment provides an industrial high-voltage flame-retardant wire, including: the flame-retardant cable comprises an insulating layer 1, a conductive core wire 2 and a flame-retardant wire 3, wherein the insulating layer 1 is wrapped on the conductive core wire 2, a plurality of major arc-shaped grooves 1a are formed in the peripheral surface of the insulating layer 1, and each major arc-shaped groove 1a is arranged along the length direction of the conductive core wire 2; the flame-retardant wires 3 are in a plurality, and the flame-retardant wires 3 are correspondingly clamped in the U-shaped grooves 1a one by one; the flame-retardant wire 3 comprises a protective layer 31 and a flame retardant 32 filled in the protective layer 31, wherein the flame retardant 32 is ammonium polyphosphate; after the local fire of the industrial high-voltage flame-retardant wire is ignited, the protective layer 31 is damaged after burning, and at the moment, the ammonium polyphosphate is decomposed by heat and is decomposed by heat to generate poly/polyphosphoric acid (strong dehydrating agent) to promote the dehydration and carbonization of the surface of organic matters. And the non-volatile phosphorus oxide and polyphosphoric acid cover the insulating layer 1 by thermal expansion, and air is isolated, so that the purpose of flame retardance is achieved. Ammonium polyphosphate is heated to decompose and release nitrogen and ammonia, and these gases are difficult to burn, play the oxygen in the dilution air to further block the supply of oxygen.

Preferably, the conductive core wire 2 is formed by combining a plurality of metal wires, so that the toughness and the conductivity of the conductive core wire 2 are enhanced.

Preferably, the insulating layer 1 includes a first insulating layer 11, a second insulating layer 12 and a shielding layer 13, the first insulating layer 11 wraps the conductive core wire 2, the shielding layer 13 is formed by interweaving a plurality of copper wires, and the shielding layer 13 wraps the first insulating layer 11; the second insulating layer 12 wraps the shielding layer 13; the major arc-shaped groove 1a is arranged on the outer peripheral surface of the second insulating layer 12.

Preferably, the protective layer 31 is made of rubber, so that the flame-retardant wire 3 can be clamped into the excellent arc-shaped groove 1a without hot working, and the flame retardant 32 in the flame-retardant wire 3 is prevented from being decomposed due to hot working.

Preferably, the radian of the optimal arc-shaped groove 1a is 1.1 pi-1.25 pi, the radian is convenient for clamping the flame-retardant wire 3 into the optimal arc-shaped groove 1a, and meanwhile, the flame-retardant wire 3 is prevented from falling off from the optimal arc-shaped groove 1 a.

The working principle is as follows: after the local fire of the industrial high-voltage flame-retardant wire is ignited, the protective layer 31 is damaged after burning, and at the moment, the ammonium polyphosphate is decomposed by heat and is decomposed by heat to generate poly/polyphosphoric acid (strong dehydrating agent) to promote the dehydration and carbonization of the surface of organic matters. And the non-volatile phosphorus oxide and polyphosphoric acid cover the insulating layer 1 by thermal expansion, and air is isolated, so that the purpose of flame retardance is achieved. Ammonium polyphosphate is heated to decompose and releases nitrogen and ammonia, and these gases are difficult for burning, play the oxygen in the dilution air to further block the supply of oxygen, avoided the intensity of a fire to burn along the electric wire, reduce the loss of fire.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An industrial high-voltage flame-retardant electric wire, comprising: the flame-retardant cable comprises an insulating layer, a conductive core wire and a flame-retardant wire, wherein the insulating layer is wrapped on the conductive core wire, the outer peripheral surface of the insulating layer is provided with a plurality of major arc-shaped grooves, and each major arc-shaped groove is arranged along the length direction of the conductive core wire; the flame-retardant wires are in one-to-one corresponding clamping connection with the U-shaped grooves; the flame-retardant wire comprises a protective layer and a flame retardant filled in the protective layer, wherein the flame retardant is ammonium polyphosphate.

2. The industrial high-voltage flame-retardant electric wire according to claim 1, wherein the conductive core wire is formed by combining a plurality of metal wires.

3. The industrial high-voltage flame-retardant wire as claimed in claim 1, wherein the insulating layer comprises a first insulating layer, a second insulating layer and a shielding layer, the first insulating layer wraps the conductive core wire, the shielding layer is formed by interweaving a plurality of copper wires, and the shielding layer wraps the first insulating layer; the second insulating layer wraps the shielding layer; the major arc-shaped groove is arranged on the peripheral surface of the second insulating layer.

4. The industrial high-voltage flame-retardant electric wire according to claim 1, wherein the protective layer is made of rubber.

5. The industrial high-voltage flame-retardant wire according to claim 1, wherein the radian of the major arc-shaped groove is 1.1 pi to 1.25 pi.