CN218939304U - High flame-retardant insulated wire and cable - Google Patents

Abstract

The utility model discloses a high-flame-retardance insulated wire and cable, which comprises an insulating sheath and a flame-retardance sheath, wherein a plurality of wire cores which are uniformly distributed are arranged on the inner side of the insulating sheath, reinforcing strips are arranged on the inner side of the insulating sheath and close to the center of the insulating sheath, an asbestos net is arranged on the inner side of the flame-retardance sheath, a waterproof film is arranged on the inner side of the asbestos net, and a lining belt is arranged on the inner side of the waterproof film. The beneficial effects of the utility model are as follows: the flame retardant sheath and the flame retardant coating mutually support and can carry out flame retardant protection, the strip-shaped arris can support in the outside of flame retardant sheath, reduces the friction between flame retardant sheath and the flame retardant coating and the ground, avoids flame retardant sheath and flame retardant coating to appear large tracts of land wearing and tearing and influence flame retardant properties, mutually support through strengthening strip and steel wire, can strengthen the stretch-proofing performance to the cable, and the lining area can carry out lining protection, prevents that insulating sheath and sinle silk from receiving extrusion deformation in the use.

Description

High flame-retardant insulated wire and cable

Technical Field

The utility model relates to a high-flame-retardance insulated wire and cable, in particular to a high-flame-retardance insulated wire and cable, and belongs to the technical field of wires and cables.

Background

The wire and cable is mainly used for transmitting electric energy or signals, and is generally composed of a sheath and a plurality of mutually insulated wire cores.

In the prior art, in order to enhance the fireproof and flame-retardant performance of the electric wire and cable, a fireproof and flame-retardant sheath is usually arranged at the outermost side of the cable, so that the inner wire core is subjected to flame-retardant protection, and the cable is prevented from being burnt by flame in the use process.

However, in the process of laying and carrying the existing electric wires and cables, the surface of the fireproof flame-retardant sheath can be in larger contact with the ground or other objects, and the surface of the fireproof flame-retardant sheath is worn in a larger area, so that the fireproof flame-retardant performance of the electric wires and cables is affected, and therefore, the high-flame-retardant insulated electric wires and cables are provided.

Disclosure of Invention

The utility model realizes the aim through the following technical scheme, and the high flame-retardant insulated wire and cable comprises an insulating sheath and a flame-retardant sheath, wherein a plurality of wire cores which are uniformly distributed are arranged on the inner side of the insulating sheath:

a reinforcing strip is arranged on the inner side of the insulating sheath and close to the center of the insulating sheath and used for improving the tensile resistance of the cable;

an asbestos net is arranged on the inner side of the flame-retardant sheath and used for further flame retardance;

the inner side of the asbestos net is provided with a waterproof film for waterproof insulation of the wire core;

the inner side of the waterproof membrane is provided with a lining belt for lining protection of the insulating sheath and the wire core.

Preferably, a filling layer is arranged on the inner side of the insulating sheath and between each wire core, and talcum powder is used as a filler for the filling layer.

Preferably, the outer surface of the flame-retardant sheath is provided with a flame-retardant coating.

Preferably, a plurality of uniformly distributed strip-shaped ribs are arranged on the outer side of the flame-retardant sheath.

Preferably, steel wires are arranged on the inner side of the reinforcing strip.

Preferably, the lining belt is wound on the outer side of the insulating sheath, the waterproof membrane is arranged on the outer side of the lining belt, and the asbestos screen is arranged between the waterproof membrane and the flame-retardant sheath.

The beneficial effects of the utility model are as follows:

1. through being provided with fire-retardant sheath, fire-retardant coating and bar arris, fire-retardant coating coats the surface at fire-retardant sheath, contacts with the flame and can generate even compact spongy foam insulating layer, improves fire-retardant sheath's flame retardant effect, simultaneously, the bar arris can support in fire-retardant sheath's the outside, reduces the friction between fire-retardant sheath and fire-retardant coating and the ground to avoid fire-retardant sheath and fire-retardant coating to appear extensive wearing and tearing and influence fire-retardant performance.

2. Through insulating sheath, filling layer and water proof membrane mutually supporting, can carry out multiple insulation protection in the outside of sinle silk, mutually supporting through strengthening strip and steel wire, can strengthen the stretch-proofing performance to the cable, avoid the cable fracture in the use, simultaneously, the lining area can carry out the lining protection, prevents insulating sheath and sinle silk receive extrusion deformation in the use.

Drawings

FIG. 1 is a schematic diagram of a main structure of the present utility model;

FIG. 2 is a second schematic diagram of the main structure of the present utility model;

fig. 3 is a cross-sectional view of the main structure of the present utility model.

In the figure: 1. an insulating sheath; 11. a wire core; 12. a filling layer; 2. a flame retardant sheath; 21. a flame retardant coating; 22. a strip-shaped edge; 3. reinforcing strips; 31. a steel wire; 4. an asbestos mesh; 5. a waterproof membrane; 6. a lining belt.

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.

The embodiment of the utility model discloses a high-flame-retardance insulated wire and cable.

According to the figures 1 to 3, the cable comprises an insulating sheath 1 and a flame-retardant sheath 2, wherein the inner side of the insulating sheath 1 is provided with a plurality of evenly distributed cable cores 11:

a reinforcing strip 3 is arranged on the inner side of the insulating sheath 1 and near the center and is used for improving the tensile resistance of the cable;

the inner side of the flame-retardant sheath 2 is provided with an asbestos net 4 for further flame retardance;

the inner side of the asbestos net 4 is provided with a waterproof film 5 for waterproof insulation of the wire core 11;

the inner side of the waterproof membrane 5 is provided with a lining band 6 for lining protection of the insulating sheath 1 and the wire core 11.

The insulating sheath 1 is made of polyethylene material, has the advantages of small water absorption, excellent electrical insulation and the like, and has excellent insulating protection effect on the wire core 11.

The inside of insulating sheath 1 and be located between each sinle silk 11 and be provided with filling layer 12, filling layer 12 adopts the talcum powder as the filler, and the talcum powder has good insulating properties, simultaneously, can keep apart and lubricate between each sinle silk 11, prevents that the crust of sinle silk 11 from taking place to rub and influence the protective effect.

The flame-retardant sheath 2 is made of polyvinyl chloride material, and antimony trioxide is added as a flame retardant, so that the flame-retardant cable has good flame retardant property and insulating property, and can protect the cable body at the outermost side.

The outer surface of the flame-retardant sheath 2 is provided with a flame-retardant coating 21, the flame-retardant coating 21 adopts JH-202 cable fireproof paint, and when the flame-retardant coating 21 contacts with flame, a uniform and compact spongy foam heat-insulating layer can be generated, so that the flame is prevented from spreading to the inner side of the flame-retardant sheath 2.

The outside of fire-retardant sheath 2 is provided with a plurality of evenly distributed's bar arris 22, and bar arris 22 and fire-retardant sheath 2 integrated into one piece can support in the outside of fire-retardant sheath 2 to reduce the friction between fire-retardant sheath 2 and other objects, and reduce the wearing and tearing of fire-retardant coating 21, thereby strengthen the protection effect of fire-retardant sheath 2 and fire-retardant coating 21.

The inside of the reinforcing strip 3 is provided with the steel wire 31, and the reinforcing strip 3 and the steel wire 31 are mutually matched, so that the tensile resistance of the cable can be enhanced, and the cable is prevented from being broken in the use process.

The asbestos net 4 is arranged between the waterproof membrane 5 and the flame-retardant sheath 2, and the asbestos net 4 can further perform flame-retardant protection on the inner side of the flame-retardant sheath 2.

The waterproof membrane 5 is arranged on the outer side of the lining belt 6, can waterproof the inner insulating sheath 1 and the wire core 11, and prevents the wire core 11 from being contacted with water to influence the insulating effect.

The lining belt 6 is spirally wound on the outer side of the insulating sheath 1, so that the insulating sheath 1 and the wire core 11 can be lined and protected, and the insulating sheath 1 and the wire core 11 are prevented from being extruded and deformed in the using process.

Working principle:

when the cable is transported, the strip-shaped ribs 22 support and protect the outer side of the flame-retardant sheath 2, friction between the flame-retardant sheath 2 and the flame-retardant coating 21 and the ground is reduced, the reinforcing strips 3 and the steel wires 31 are matched with each other, the tensile resistance of the cable is enhanced, the lining belt 6 supports and protects, and the insulating sheath 1 and the wire core 11 are prevented from being extruded and deformed;

further, when the fire disaster occurs, the flame-retardant coating 21 reacts to generate a compact spongy foam heat insulation layer to be flame-retardant, then the flame-retardant sheath 2 and the asbestos screen 4 are matched with each other to further flame-retardant, and meanwhile, the waterproof film 5 and the insulating sheath 1 are matched with each other to perform waterproof insulation on the wire core 11, so that the insulation performance of the wire core 11 is prevented from being influenced.

For a person skilled in the art, by arranging the flame-retardant sheath 2, the flame-retardant coating 21 and the strip-shaped ribs 22, the flame-retardant coating 21 is coated on the outer surface of the flame-retardant sheath 2, and a uniform and compact foam heat-insulating layer can be generated when the flame-retardant coating 21 contacts flame, so that the flame-retardant effect of the flame-retardant sheath 2 is improved, and meanwhile, the strip-shaped ribs 22 can be supported on the outer side of the flame-retardant sheath 2, so that friction between the flame-retardant sheath 2 and the flame-retardant coating 21 and the ground is reduced, and the flame-retardant performance is prevented from being influenced by large-area abrasion of the flame-retardant sheath 2 and the flame-retardant coating 21;

through insulating sheath 1, filling layer 12 and water proof membrane 5 mutually supporting, can carry out multiple insulation protection in the outside of sinle silk 11, mutually supporting through strengthening strip 3 and steel wire 31, can strengthen the stretch-proofing performance to the cable, avoid the cable fracture in the use, simultaneously, inside lining area 6 can carry out inside lining protection, prevents insulating sheath 1 and sinle silk 11 to receive extrusion deformation in the use.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (6)

1. A high flame retardant insulated wire and cable comprising:

the cable comprises an insulating sheath (1), wherein a plurality of cable cores (11) which are uniformly distributed are arranged on the inner side of the insulating sheath (1);

the flame-retardant sheath (2) is arranged on the outer side of the insulating sheath (1) and used for flame-retardant protection;

the method is characterized in that: a reinforcing strip (3) is arranged on the inner side of the insulating sheath (1) and close to the center and used for improving the tensile resistance of the cable;

an asbestos net (4) is arranged on the inner side of the flame-retardant sheath (2) and is used for further flame retardance;

the inner side of the asbestos screen (4) is provided with a waterproof film (5) for waterproof insulation of the wire core (11);

the waterproof membrane (5) is provided with a lining belt (6) on the inner side for lining protection of the insulating sheath (1) and the wire core (11).

2. A high flame retardant insulated wire and cable according to claim 1, wherein: and a filling layer (12) is arranged on the inner side of the insulating sheath (1) and positioned between each wire core (11), and talcum powder is used as a filler for the filling layer (12).

3. A high flame retardant insulated wire and cable according to claim 1, wherein: the outer surface of the flame-retardant sheath (2) is provided with a flame-retardant coating (21).

4. A high flame retardant insulated wire and cable according to claim 1, wherein: the outer side of the flame-retardant sheath (2) is provided with a plurality of uniformly distributed strip-shaped ribs (22).

5. A high flame retardant insulated wire and cable according to claim 1, wherein: the inner side of the reinforcing strip (3) is provided with a steel wire (31).

6. A high flame retardant insulated wire and cable according to claim 1, wherein: the lining belt (6) is wound on the outer side of the insulating sheath (1), the waterproof membrane (5) is arranged on the outer side of the lining belt (6), and the asbestos screen (4) is arranged between the waterproof membrane (5) and the flame-retardant sheath (2).

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