CN214897757U - High-performance fire-resistant wire cable - Google Patents

Abstract

The utility model discloses a high performance fire resistance wire and cable, including single core conductor, single core conductor from interior to exterior comprises conductor, fire-resistant package, continuous ceramic fire-resistant insulating layer and electric insulation layer around covering, continuous ceramic fire-resistant insulating layer and electric insulation layer in proper order, and the conductor is wrapped or is drawn a packet one deck mica tape outward, fire-resistant package has the transition flame retardant coating on the covering, and fire-resistant package ceramic fire-resistant insulating layer of crowded package outward in succession outside the covering, pottery fire-resistant insulating layer is crowded package electric insulation layer outward in succession seven the multicore cable is constituteed to single core conductor, and seven single core conductors wrap fire-retardant or fire-resistant area outward. When the cable is attacked by a big fire, the high-performance fire-resistant wire and cable can form a fire-resistant insulating layer with high temperature resistance and voltage resistance, the voltage borne by the fire-resistant insulating layer is from 0.6/1.0KV and below, the fire-resistant time borne by the fire-resistant insulating layer is 90-180 min, even 360min fire supply time and 15-60 min cooling time, and the integrity of a circuit is kept.

Description

High-performance fire-resistant wire cable

Technical Field

The utility model relates to a wire and cable technical field specifically is a high performance fire-resistant wire and cable.

Background

The fire-resistant layer of the existing wire and cable mainly comprises mica tape multi-layer lapping (two layers and three layers), seams are overlapped on the mica tape lapping of the fire-resistant layer, the multi-layer lapping is loose, the mica tape is easy to damp, the mica tape has joints, hidden troubles are left for the fire resistance of the cable, the lapping efficiency of the mica tape is low, the outer diameter of the cable is thick, the requirement of dense laying on site is not met, the fire-resistant layer can resist 0.6/1.0kv voltage and 950 ℃, the integrity index of a circuit is kept, and the requirement of more than 3 hours cannot be met.

To this end, it is necessary to design a high-performance fire-resistant electric wire and cable so as to solve the problems set forth above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high performance fire-resistant wire and cable to solve the problem that above-mentioned background art provided.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high performance fire-resistant wire and cable, includes single core conductor, single core conductor from interior to exterior comprises conductor, fire-resistant package, continuous ceramic fire-resistant insulating layer and electric insulation layer around package in proper order, and the conductor is wrapped or is drawn a packet one deck mica tape outward, fire-resistant package has the transition flame retardant coating on the package, and fire-resistant package ceramic fire-resistant insulating layer in succession outside the package, the outer continuous crowded package electric insulation layer of pottery fire-resistant insulating layer, seven the multicore cable is constituteed to single core conductor, and seven single core conductors are wrapped fire-retardant or fire-resistant area outward, the multicore cable comprises seven single core conductors, fire-retardant package fire-retardant restrictive coatings of fire-retardant area and second from interior to exterior, and fire-retardant area is wrapped the fire-retardant restrictive coating of crowded package second outward.

Preferably, the mica tape can be any one of a phlogopite tape, a calcined muscovite tape, a synthetic mica tape, a ceramic fire-resistant mica tape, a fire-resistant ceramic tape and a high-temperature-resistant insulating tape.

Preferably, the ceramic fire-resistant insulating layer is a layer of thermoplastic ceramic polyolefin fire-resistant insulating material, and the thickness of one side of the thermoplastic ceramic polyolefin fire-resistant insulating material is zero one to zero four millimeters.

Preferably, the material of the electric insulation layer can be PVC or low smoke zero halogen or other high temperature resistant insulation material.

Preferably, the fire-resistant wrapping layer is a round repairing process structure and a dehumidifying process structure.

Preferably, a first flame-retardant sheath layer is arranged outside the single-core wire.

Has the following functions:

a) a layer of ceramic polyolefin fire-resistant insulating material is extruded outside the fire-resistant wrapping layer to fill gaps (gaps containing mica tape joints) left after the mica tape is wrapped or pulled, so that a seamless fire-resistant layer is achieved;

b) the moisture absorption phenomenon of the mica tape is solved;

c) when the cable is attacked by a big fire, a high-temperature-resistant and voltage-resistant fireproof insulating layer can be formed, the voltage borne by the fireproof insulating layer is from 0.6/1.0KV and below, the borne fireproof time is 90-180 min, even 360min fire supply time and 15-60 min cooling time, and the integrity of the circuit is kept;

d) in the rounding repair process of the fire-resistant wrapping layer, the space between the wrapping tape and the conductor is compacted, and the air gap and the surface of the edge of the compacted wrapping tape are rounded and smooth;

e) and (4) implementing a moisture removal and exhaust process around the fire-resistant layer to ensure the reliability of the cable.

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

when the cable is attacked by a big fire, a high-temperature-resistant and voltage-resistant fireproof insulating layer can be formed, the voltage borne by the fireproof insulating layer is from 0.6/1.0KV and below, the borne fireproof time is 90-180 min, even 360min fire supply time and 15-60 min cooling time, and the integrity of the circuit is kept; the performance index of the product meets BS 6387 fire-resistant test method for cable maintaining circuit integrity under flame condition, cable grade 450/750V and below, flame temperature of 950 +/-40 ℃; maintain circuit integrity for greater than 3 hours (C, W, Z integrity test), and have the index of maintaining circuit integrity for up to 6 hours.

Drawings

FIG. 1 is a structural cross-sectional view of a single core wire of the present invention;

FIG. 2 is a schematic structural view of a single core wire of the present invention;

FIG. 3 is a sectional view of the connecting structure of the single core wire and the first flame-retardant sheath layer;

fig. 4 is a structural section view of the structural multicore cable of the present invention.

In the figure: 1. a single core wire; 101. a conductor; 102. a fire-resistant wrapping layer; 103. ceramizing the refractory insulating layer; 104. an electrically insulating layer; 2. a first flame retardant jacket layer; 3. a multi-core cable; 301. flame-retardant wrapping tape; 302. a second flame retardant jacket layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a high performance fire-resistant wire and cable, including single core wire 1, single core wire 1 is by conductor 101 from inside to outside in proper order, fire-resistant chartered covering 102, pottery fire-resistant insulating layer 103 and electrical insulation layer 104 constitute in succession, and conductor 101 winds or drags a wrap layer mica tape outward, it coats and has the transition flame retardant coating to wrap on the fire-resistant chartered covering 102, and fire-resistant chartered covering 102 outward in succession crowded package pottery fire-resistant insulating layer 103, pottery fire-resistant insulating layer 103 wraps electrical insulation layer 104 outward in succession, seven single core wires 1 constitute multicore cable 3, and seven single core wires 1 wrap fire-retardant or fire-resistant area outward, multicore cable 3 is by seven single core wires 1 from inside to outside, fire-retardant chartered covering 301 and the fire-retardant restrictive coating 302 of second constitute, and fire-retardant chartered covering 301 wraps the fire-retardant restrictive coating 302 outward.

The mica tape can be any one of a phlogopite tape, a calcined muscovite tape, a synthetic mica tape, a ceramic fire-resistant mica tape, a fire-resistant ceramic tape and a high-temperature-resistant insulating tape.

The ceramic fire-resistant insulating layer 103 is a layer of thermoplastic ceramic polyolefin fire-resistant insulating material, and the thickness of one side of the layer is zero one to zero four millimeters.

The material of the electrically insulating layer 104 may be PVC or low smoke zero halogen or other high temperature resistant insulating material.

The fire-resistant wrapping layer 102 is a round repairing process structure and a dehumidifying process structure.

A first flame-retardant sheath layer 2 is arranged outside the single-core wire 1.

The production process comprises the following steps: the conductor adopts and accords with 1 type to 6 types of conductor structures, the mica tape is around the package or indulges the package on conductor 101, fire-resistant whole repair technology around covering 102, fire-resistant moisture removal technology around covering 102, fire-resistant transition flame retardant coating of coating (spraying) on the covering 102, the pottery fire-resistant insulating material of polyolefin of crowded package in succession, crowded package electrical insulation material in succession, electrical insulation single line stranding, electrical insulation cable is outer around wrapping fire-retardant or fire-resistant area, the fire-retardant restrictive coating of crowded package of cable (to single core fire-resistant line after cable electrical insulation layer makes, still need crowded package fire-retardant restrictive coating).

Those not described in detail in this specification are within the skill of the art.

Although the present invention 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 or portions thereof without departing from the spirit and scope of the invention.

Claims (6)

1. A high-performance fire-resistant electric wire and cable, includes single core wire (1), its characterized in that: the single-core wire (1) consists of a conductor (101), a fire-resistant wrapping layer (102), a continuous ceramic fire-resistant insulating layer (103) and an electric insulating layer (104) from inside to outside in sequence, and a mica tape is wrapped or wrapped outside the conductor (101), a transition fire-resistant layer is coated on the fire-resistant wrapping layer (102), a ceramic fire-resistant insulating layer (103) is continuously extruded outside the fire-resistant wrapping layer (102), an electric insulating layer (104) is continuously extruded outside the ceramic fire-resistant insulating layer (103), seven single-core wires (1) form a multi-core cable (3), and seven single core wires (1) are fire-retardant or fire-resistant area of package outward, multicore cable (3) from interior to exterior comprises seven single core wires (1), fire-retardant taped wound (301) and the fire-retardant restrictive coating of second (302), and fire-retardant second fire-retardant restrictive coating (302) of crowded package outward of taped wound (301).

2. The high performance fire resistant electrical wire cable of claim 1, wherein: the mica tape can be any one of a phlogopite tape, a calcined muscovite tape, a synthetic mica tape, a ceramic fire-resistant mica tape, a fire-resistant ceramic tape and a high-temperature-resistant insulating tape.

3. The high performance fire resistant electrical wire cable of claim 1, wherein: the ceramic fire-resistant insulating layer (103) is a layer of thermoplastic ceramic polyolefin fire-resistant insulating material, and the thickness of one side of the ceramic fire-resistant insulating layer is one to four millimeters.

4. The high performance fire resistant electrical wire cable of claim 1, wherein: the material of the electrical insulation layer (104) can be PVC or low smoke zero halogen or other high temperature resistant insulation material.

5. The high performance fire resistant electrical wire cable of claim 1, wherein: the fire-resistant wrapping layer (102) is a round repairing process structure and a dehumidifying process structure.

6. The high performance fire resistant electrical wire cable of claim 1, wherein: and a first flame-retardant sheath layer (2) is arranged outside the single-core wire (1).

Images