CN218123015U - Flame-retardant high-low voltage cable - Google Patents

Abstract

The utility model relates to a high-low voltage cable technical field, in particular to a flame-retardant high-low voltage cable, which comprises a wire core, wherein a primary protection component is sleeved outside the wire core; the primary protection assembly comprises an insulating sleeve, a metal sleeve is wrapped outside the insulating sleeve, a shielding layer is wrapped outside the metal sleeve, an anti-interference layer is wrapped outside the shielding layer, and a secondary protection assembly is sleeved outside the anti-interference layer; the second grade protection component comprises a filling layer, the outside cover of the filling layer is provided with a moisture-proof layer, the outside cover of the moisture-proof layer is provided with an armor cover, the outside cover of the armor cover is provided with an outer sheath, a shielding layer and an anti-interference layer are arranged in the flame-retardant high-low voltage cable, so that the potential between the shielding layer and the metal sleeve can be equal, and the insulating cover and the shielding layer are in close contact, so that the generation of partial discharge can be effectively avoided, and the mutual interference of signals among multiple groups of cable cores can be effectively prevented.

Description

Flame-retardant high-low voltage cable

Technical Field

The utility model relates to a high low tension cable technical field specifically is a fire-retardant high low tension cable.

Background

A cable is a conductor coated with an insulating layer, a protective layer, a shield layer, and the like for transmitting power, signal current, and signal voltage. The cable can be divided into a high-voltage cable and a low-voltage cable according to voltage; the high-low voltage cable generally adopts a flame-retardant cable, and can prevent the spread of fire.

When the existing flame-retardant high-low voltage cable is used, although the flame-retardant material is filled in the cable, the fire can be prevented from spreading, but partial discharge can occur between the cable core and the insulating layer.

There is therefore a need for a flame retardant high and low voltage cable that ameliorates the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-retardant high low tension cable to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a fire-retardant high-low voltage cable, includes the sinle silk, its characterized in that: a primary protection component is sleeved outside the wire core;

the primary protection assembly comprises an insulating sleeve, a shielding layer is wrapped outside the insulating sleeve, a metal sleeve is wrapped outside the shielding layer, an anti-interference layer is wrapped outside the metal sleeve, and a secondary protection assembly is sleeved outside the anti-interference layer;

the secondary protection assembly comprises a filling layer, a moisture-proof layer is sleeved on the outer side of the filling layer, an armor sleeve is sleeved on the outer side of the moisture-proof layer, and an outer sheath is sleeved on the outer side of the armor sleeve.

As the utility model discloses preferred scheme, accompany the talcum powder between sinle silk and the insulating cover, the insulating cover is made by silane crosslinked polyethylene material.

As a preferable embodiment of the present invention, the shielding layer is made of an aluminum material, and the metal sheath is made of a semiconductor paper.

As the preferred scheme of the utility model, the jam-proof layer is coiled by the tinfoil tape and forms, the filling layer is coiled by the polyester tape.

As the preferred proposal of the utility model, the moisture-proof layer is formed by wrapping pp ropes.

As the utility model discloses preferred scheme, the armor cover is formed by thin steel wire wrapping, the oversheath is made by pe plastic granules.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses in, through set up shielding layer and jam-proof layer in this fire-retardant high low voltage cable, the shielding layer parcel that will be made by the aluminium material can make the potential equal between shielding layer and the metal covering in the outside of shielding layer to in close contact with between insulating cover and the shielding layer can effectively avoid partial discharge's production, with tinfoil tape wrapping in the metal covering outside formation jam-proof layer, can effectively prevent signal mutual interference between the multiunit sinle silk.

Drawings

FIG. 1 is a general schematic view of the present invention;

fig. 2 is an overall schematic view of the wire core and the primary protection component of the present invention;

fig. 3 is the whole schematic diagram of the second-stage protection assembly of the present invention.

In the figure: 1. a wire core; 2. a primary guard assembly; 201. an insulating sleeve; 202. a shielding layer; 203. a metal sleeve; 204. an interference preventing layer; 3. a secondary protective component; 301. a filling layer; 302. a moisture barrier layer; 303. sheathing; 304. an outer sheath.

Detailed Description

The following description will be given in conjunction with the embodiments of the present invention clearly and completely, and obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In order to facilitate understanding of the invention, a number of embodiments of the invention will be described more fully hereinafter with reference to the accompanying drawings, but which may be embodied in many different forms and are not limited to the embodiments described herein, but rather are provided so as to render the disclosure more thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes one or more of the associated listed items and all combinations.

In an embodiment, please refer to fig. 1-3, the present invention provides a technical solution:

a flame-retardant high-low voltage cable comprises a wire core 1, wherein a primary protection component 2 is sleeved outside the wire core 1;

the primary protection component 2 comprises an insulating sleeve 201, a shielding layer 202 is wrapped outside the insulating sleeve 201, a metal sleeve 203 is wrapped outside the shielding layer 202, an anti-interference layer 204 is wrapped outside the metal sleeve 203, and the secondary protection component 3 is sleeved outside the anti-interference layer 204; talcum powder is clamped between the wire core 1 and the insulating sleeve 201, and the insulating sleeve 201 is made of silane crosslinked polyethylene material; the talcum powder can separate the cable sheath from the cable core; the shield layer 202 is made of an aluminum material, and the metal sheath 203 is wrapped with a semiconductor paper. The interference prevention layer 204 is formed by wrapping a tin foil tape; the shielding layer 202 made of aluminum materials is wrapped outside the shielding layer 202, so that the electric potential between the shielding layer 202 and the metal sleeve 203 is equal, the insulating sleeve 201 is in close contact with the shielding layer 202, the generation of partial discharge can be effectively avoided, the tin foil tape is wrapped outside the metal sleeve 203 to form the anti-interference layer 204, the mutual interference of signals among multiple groups of wire cores 1 can be effectively prevented, and the assembly of the primary protection assembly 2 of the wire cores 1 is completed.

In this embodiment, referring to fig. 1 and 3, the secondary protective component 3 includes a filler layer 301, a moisture barrier layer 302 is sleeved outside the filler layer 301, an armor 303 is sleeved outside the moisture barrier layer 302, and an outer sheath 304 is sleeved outside the armor 303; the filling layer 301 is made of a polyester tape wound. The moisture barrier 302 is wrapped with pp cords. The armor sleeve 303 is formed by wrapping thin steel wires, and the outer sheath 304 is made of pe plastic particles; wrap up the polyester tape in a plurality of groups and form filling layer 301 in the sinle silk 1 outside that has one-level protection component 2, the polyester tape has higher mechanical strength for the cable has stronger high temperature resistant, low temperature resistant performance, wraps up the pp rope and forms the moisture barrier in the filling layer 301 outside, makes the cable have corrosion-resistant, antifriction's performance, can prolong the life of cable.

The utility model discloses work flow: when the flame-retardant high-low voltage cable designed by the scheme is produced, an insulating sleeve 201 made of silane crosslinked polyethylene material is wrapped on the outer side of a wire core 1, semiconductor paper is wrapped on the outer side of the insulating sleeve 201 to form a shielding layer 202, then the shielding layer 202 made of aluminum material is wrapped on the outer side of the shielding layer 202, the electric potentials between the shielding layer 202 and a metal sleeve 203 can be equal, the insulating sleeve 201 and the shielding layer 202 are in close contact, the generation of partial discharge can be effectively avoided, finally a tin foil tape is wrapped on the outer side of the metal sleeve 203 to form an anti-interference layer 204, the mutual interference of signals among a plurality of groups of wire cores 1 can be effectively prevented, the assembly of a primary protection component 2 of the wire core 1 is completed, then the polyester tape is wrapped on the outer sides of a plurality of groups of wire cores 1 wrapped with the primary protection components 2 to form a filling layer 301, the polyester tape has higher mechanical strength, so that the cable has stronger high temperature resistance and low temperature resistance, a pp rope is wrapped on the outer side of the filling layer 301 to form a moisture insulation layer, so that the outer side of the filling layer 304 is wrapped with fine armor particles, and the armor layer 303 is wrapped with plastic.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a fire-retardant high-low voltage cable, includes sinle silk (1), its characterized in that: a primary protection component (2) is sleeved on the outer side of the wire core (1);

the primary protection component (2) comprises an insulating sleeve (201), a shielding layer (202) is wrapped on the outer side of the insulating sleeve (201), a metal sleeve (203) is wrapped on the outer side of the shielding layer (202), an anti-interference layer (204) is wrapped on the outer side of the metal sleeve (203), and a secondary protection component (3) is sleeved on the outer side of the anti-interference layer (204);

the secondary protection component (3) comprises a filling layer (301), wherein a moisture-proof layer (302) is sleeved on the outer side of the filling layer (301), an armor sleeve (303) is sleeved on the outer side of the moisture-proof layer (302), and an outer sheath (304) is sleeved on the outer side of the armor sleeve (303).

2. A flame retardant high and low voltage cable according to claim 1, wherein: talcum powder is clamped between the wire core (1) and the insulating sleeve (201), and the insulating sleeve (201) is made of a silane cross-linked polyethylene material.

3. A flame retardant high and low voltage cable according to claim 1, wherein: the shielding layer (202) is made of aluminum material, and the metal sleeve (203) is wrapped by semiconductor paper.

4. A flame retardant high and low voltage cable according to claim 1, wherein: the anti-interference layer (204) is formed by wrapping a tin foil tape, and the filling layer (301) is formed by wrapping a polyester tape.

5. A flame retardant high and low voltage cable according to claim 1, wherein: the moisture barrier (302) is wrapped with pp cords.

6. A flame retardant high and low voltage cable according to claim 1, wherein: the armor (303) is formed by wrapping thin steel wires, and the outer sheath (304) is made of pe plastic particles.

Images