CN219180254U

CN219180254U - Low-smoke halogen-free flame-retardant fire-resistant wire cable

Info

Publication number: CN219180254U
Application number: CN202223030427.5U
Authority: CN
Inventors: 张萍; 孔梦云; 陶煦; 干健
Original assignee: WANJIANG CENTER FOR DEVELOPMENT OF EMERGING INDUSTRIAL TECHNOLOGY
Current assignee: WANJIANG CENTER FOR DEVELOPMENT OF EMERGING INDUSTRIAL TECHNOLOGY
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-06-13
Anticipated expiration: 2032-11-15

Abstract

The utility model discloses a low-smoke halogen-free flame-retardant fire-resistant wire and cable, which relates to the technical field of cables and comprises a wire, wherein a fire-resistant insulating layer is arranged on the periphery of the wire, a low-smoke halogen-free flame-retardant layer is arranged on the periphery of the fire-resistant insulating layer, a filling layer is arranged between the inside of the low-smoke halogen-free flame-retardant layer and the fire-resistant insulating layer, a protective layer is arranged on the periphery of the low-smoke halogen-free flame-retardant layer, the protective layer is made of LDPE (low-smoke halogen-free flame-retardant) materials, the low-smoke halogen-free flame-retardant layer is made of polyolefin materials, the filling layer is made of glass fiber ropes, and the fire-resistant insulating layer is made of halogen-free crosslinked polyethylene materials. All parts of the cable are made of halogen-free materials, the smoke released during the combustion of the cable is small, the cable does not generate very thick acid mist, and the cable has good flame retardance and fire resistance.

Description

Low-smoke halogen-free flame-retardant fire-resistant wire cable

Technical Field

The utility model relates to the technical field of cables, in particular to a low-smoke halogen-free flame-retardant fire-resistant wire cable.

Background

Wire and cable refer to materials used for electrical, electrical and related transmission purposes. The terms "wire" and "cable" are not strictly limited. Products with a small core number, a small product diameter and a simple structure are generally called electric wires, and are called bare electric wires without insulation, and other products are called cables. With the progress of the age, the development of technology, wires and cables are widely used by people.

Traditional PVC (polyvinyl chloride) electric wire, PVC mixture breaks down easily and escapes a large amount of extremely toxic, have corrosive HCL (hydrogen chloride) gas after being heated when the conflagration takes place to produce a large amount of extremely toxic dense smoke, cause great life and property loss, and bring very big difficulty for rescue work, consequently, this application provides a low smoke and zero halogen fire-retardant fire-resistant electric wire cable and satisfies the demand.

Disclosure of Invention

The utility model provides a low smoke and zero halogen fire-retardant fire-resistant electric wire cable, all parts of this cable are by not containing halogen's material and make, and the smog volume that releases when the cable burns is very little, and it can not produce very dense acid mist, and this cable has fire-retardant fire resistance well.

In order to achieve the above purpose, the present application provides the following technical solutions: the low-smoke halogen-free flame-retardant fire-resistant wire and cable comprises a wire, a fire-resistant insulating layer is arranged on the periphery of the wire, a low-smoke halogen-free flame-retardant layer is arranged on the periphery of the fire-resistant insulating layer, a filling layer is arranged between the interior of the low-smoke halogen-free flame-retardant layer and the fire-resistant insulating layer, a protective layer is arranged on the periphery of the low-smoke halogen-free flame-retardant layer, the protective layer is made of LDPE material, the low-smoke halogen-free flame-retardant layer is made of polyolefin material, the filling layer is made of glass fiber ropes, and the fire-resistant insulating layer is made of halogen-free crosslinked polyethylene material.

Preferably, the inside of the protective layer is circumferentially sealed with a plurality of liquid storage cavities for storing liquid, and the liquid is vaporized by heating.

Preferably, the inner cavity of the protective layer is provided with a cavity, a plurality of blocking rings are arranged in the cavity at equal intervals, and a liquid storage cavity for storing liquid fire extinguishing agent is arranged between every two adjacent blocking rings.

Preferably, a plurality of blocking strips are circumferentially arranged between two adjacent blocking rings, and the liquid storage cavities are respectively provided with a plurality of small liquid storage cavities by the plurality of blocking strips.

Preferably, a plurality of spheres are arranged in the liquid storage cavity, and storage liquid is arranged in the spheres.

In summary, the utility model has the technical effects and advantages that:

1. the utility model has reasonable structure, all parts of the cable are made of halogen-free materials, the smoke released during the combustion of the cable is little, the cable does not generate very thick acid mist, and the cable has good flame retardance and fire resistance;

2. according to the utility model, the liquid storage cavity for storing liquid is arranged, the liquid in the liquid storage cavity is heated and vaporized, when the liquid storage cavity is burned by open fire or the liquid storage cavity is broken by high-pressure gas, the gas in the liquid storage cavity is released instantly to form explosion, the explosion sound plays a good role in warning, the cable is used for reminding personnel of burning, and meanwhile, the position of a fire point can be found through the explosion sound;

3. according to the utility model, the liquid storage cavity for storing the liquid extinguishing agent is arranged, and meanwhile, when the outer surface of the protective layer is burnt out, the antifreeze extinguishing liquid in the liquid storage cavity flows out to extinguish the fire, so that the fire can be effectively inhibited;

4. according to the utility model, the liquid storage cavity is divided into a plurality of small liquid storage cavities through the barrier strips, so that when the cable is partially burnt, the antifreeze fire extinguishing liquid between the two barrier rings is completely leaked, so that unnecessary fire extinguishing liquid is wasted, and meanwhile, fire spreading caused by the fact that no fire extinguishing liquid exists at other parts of the cable is prevented;

5. in the utility model, a plurality of spheres filled with liquid are arranged, the liquid is vaporized in the spheres to form high-pressure steam, when the spheres are burned by open fire or the spheres are broken by high-pressure gas, the gas in the spheres is instantaneously released to form explosion, and the explosion can fry the anti-freezing fire extinguishing liquid, so that the spread of fire is further reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a cross-sectional structure of a cable according to the present utility model;

fig. 2 is a schematic diagram of a front view of a partial cross-sectional structure of a cable according to the present utility model.

In the figure: 1. a protective layer; 2. a low smoke halogen-free flame retardant layer; 3. a filling layer; 4. a refractory insulating layer; 5. a wire; 6. a liquid storage cavity; 7. a liquid storage cavity; 8. a blocking ring; 9. a barrier strip; 10. and (3) a sphere.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: referring to fig. 1-2, a low smoke zero halogen flame retardant fire resistant wire cable comprises a wire 5, a fire resistant insulating layer 4 is arranged on the periphery of the wire 5, a low smoke zero halogen flame retardant layer 2 is arranged on the periphery of the fire resistant insulating layer 4, a filling layer 3 is arranged between the inside of the low smoke zero halogen flame retardant layer 2 and the fire resistant insulating layer 4, a protective layer 1 is arranged on the periphery of the low smoke zero halogen flame retardant layer 2, the protective layer 1 is made of an LDPE material, the low smoke zero halogen flame retardant wire cable has good impact toughness, low temperature resistance, electrical insulation and moisture resistance, the low smoke zero halogen flame retardant layer 2 is made of a polyolefin material, has good flame retardance, and is decomposed into water and carbon dioxide during combustion, no obvious smoke and harmful gas are generated, the filling layer 3 is made of a glass fiber rope, good heat insulation, fire resistance and electrical insulation are realized, all components of the cable are made of a halogen-free material, the cable has good electrical insulation and crack resistance, the smoke amount released during combustion is small, the cable does not generate strong smoke, and the cable has good flame retardance.

It should be noted that the wire 5 is made of copper material.

As a preferred implementation manner in this embodiment, the inside of the protective layer 1 is circumferentially sealed with a plurality of liquid storage cavities 7 for storing liquid, the liquid is heated and vaporized, because the melting point of the LDPE material is between 108 ° and 126 °, so that the liquid is selected from water, easy to obtain, and has fire extinguishing capability, vaporized water vapor does not pollute when heated, the amount of water in the liquid storage cavities 7 must not exceed about three fifth of the volume thereof, the protective layer 1 is prevented from being broken when water freezes, when the cable is ignited by an external fire source, the protective layer 1 is burnt first, when the cable is burnt, the water in the liquid storage cavities 7 is heated and vaporized at high temperature to form high-pressure gas, the liquid storage cavities 7 are outwards expanded, and when the liquid storage cavities 7 are burned by open fire or the high-pressure gas is broken by the liquid storage cavities 7 (the protective layer 1 is melted and softened by heating to be broken), the gas in the cavities 7 is instantaneously released to form explosion, the explosion sound plays a good role in warning, and the cable is used for reminding personnel of burning the cable to find the position of the explosion sound.

It is essential that first, the liquid can be a mixture of antifreeze and water, which can lower the freezing point of water and prevent water from freezing.

As a preferred implementation manner in this embodiment, the inner cavity of the protective layer 1 is provided with a cavity, a plurality of blocking rings 8 are arranged in the cavity at equal intervals, a liquid storage cavity 6 for storing liquid fire extinguishing agent is arranged between adjacent blocking rings 8, the liquid fire extinguishing agent is provided with anti-freezing fire extinguishing liquid (namely mixed liquid of fire extinguishing liquid and anti-freezing agent), the low-temperature fire extinguishing liquid can be prevented from being frozen up, and meanwhile when the outer surface of the protective layer 1 is burnt out, the anti-freezing fire extinguishing liquid in the interior of the protective layer flows out to extinguish fire, so that fire can be effectively inhibited.

It should be noted that the antifreeze fire-extinguishing liquid cannot fill the entire liquid storage cavity 6, so that vaporization of internal components is avoided, and the cable is prevented from expanding outwards or explosion.

In this embodiment, a plurality of barrier ribs 9 are circumferentially disposed between two adjacent barrier rings 8, and the liquid storage cavities 6 are respectively formed by a plurality of small liquid storage cavities by the plurality of barrier ribs 9, so that when the local part of the cable is prevented from being burned, the antifreeze fire extinguishing liquid between the two barrier rings 8 is completely leaked, thereby causing unnecessary waste of fire extinguishing liquid, and simultaneously preventing other parts of the cable from spreading fire caused by no fire extinguishing liquid.

It should be noted that the antifreeze fire-extinguishing fluid cannot fill the entire liquid storage chamber.

In this embodiment, a plurality of spheres 10 are disposed in the liquid storage cavity 6, and a storage liquid is disposed in the spheres 10, wherein the storage liquid is water, the spheres 10 are made of LDPE material and are supported by the LDPE material, no halogen element is contained, the water is vaporized in the spheres to form high-pressure steam, when the spheres 10 are burned by an open fire or the spheres 10 are burst by high-pressure gas (which is softened by heating and melting), the gas in the spheres 10 is released instantaneously to form explosion, and the explosion can burst the antifreeze fire extinguishing liquid, so that the spread of fire is further reduced.

The working principle of the utility model is as follows: all parts of the cable are made of halogen-free materials, the smoke released by the cable during combustion is small, the cable does not generate very thick acid mist, and the cable has good flame retardance and fire resistance;

the liquid storage cavity 7 for storing liquid is arranged, the liquid in the liquid storage cavity 7 is heated and vaporized, when the liquid storage cavity 7 is burned by open fire or the liquid storage cavity 7 is broken by high-pressure gas, the gas in the liquid storage cavity 7 is released instantly to form explosion, the explosion sound plays a good role in warning, the cable is used for reminding personnel of burning, and meanwhile, the position of a fire point can be found through the explosion sound;

the liquid storage cavity 6 for storing the liquid extinguishing agent is arranged, and when the outer surface of the protective layer 1 is burnt out, the antifreeze extinguishing liquid in the liquid storage cavity flows out to extinguish the fire, so that the fire can be effectively inhibited;

the liquid storage cavity 6 is respectively provided with a plurality of small liquid storage cavities through the barrier strips, when the purpose of dividing the liquid storage cavities into a plurality of small liquid storage cavities is to prevent the local part of the cable from being burnt, the antifreeze fire extinguishing liquid between the two barrier rings 6 is completely leaked, so that unnecessary waste of the fire extinguishing liquid is caused, and meanwhile, the spread of fire caused by the fact that the fire extinguishing liquid is not arranged at other parts of the cable is also prevented.

In the utility model, a plurality of spheres filled with liquid are arranged, the liquid is vaporized in the spheres to form high-pressure steam, when the spheres are burned by open fire or the spheres are broken by high-pressure gas, the gas in the spheres is instantaneously released to form explosion, and the explosion can fry the anti-freezing fire extinguishing liquid, so that the spread of fire is further reduced.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model 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, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a low smoke and zero halogen fire-retardant fire-resistant wire cable, includes wire (5), its characterized in that: the periphery of wire (5) is provided with fire-resistant insulating layer (4), the periphery of fire-resistant insulating layer (4) is provided with low smoke and zero halogen flame retardant coating (2), be provided with filling layer (3) between the fire-resistant insulating layer (4) and the inside of low smoke and zero halogen flame retardant coating (2), the periphery of low smoke and zero halogen flame retardant coating (2) is provided with protective layer (1), protective layer (1) are made by LDPE material, low smoke and zero halogen flame retardant coating (2) adopts polyolefin material to make, filling layer (3) adopt glass fiber rope to make, fire-resistant insulating layer (4) adopt halogen-free crosslinked polyethylene material to make.

2. A low smoke zero halogen flame retardant fire resistant wire and cable according to claim 1 wherein: the inside of the protective layer (1) is circumferentially sealed with a plurality of liquid storage cavities (7) for storing liquid, and the liquid is vaporized by heating.

3. A low smoke zero halogen flame retardant fire resistant wire and cable according to claim 2 wherein: the inner cavity of the protective layer (1) is provided with a cavity, a plurality of blocking rings (8) are arranged in the cavity at equal intervals, and a liquid storage cavity (6) for storing liquid fire extinguishing agent is arranged between every two adjacent blocking rings (8).

4. A low smoke zero halogen flame retardant fire resistant wire and cable according to claim 3 wherein: a plurality of barrier strips (9) are circumferentially arranged between two adjacent barrier rings (8), and the liquid storage cavities (6) are respectively provided with a plurality of small liquid storage cavities by the barrier strips (9).

5. A low smoke zero halogen flame retardant fire resistant wire and cable according to claim 3 wherein: a plurality of spheres (10) are arranged in the liquid storage cavity (6), and storage liquid is arranged in the spheres (10).