CN210403315U

CN210403315U - Copper core polyethylene insulation fire-resistant power cable

Info

Publication number: CN210403315U
Application number: CN201921074708.6U
Authority: CN
Inventors: 吴国生
Original assignee: Shenyang Chaoxiang Cable Manufacturing Co Ltd
Current assignee: Shenyang Chaoxiang Cable Manufacturing Co Ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-04-24
Anticipated expiration: 2029-07-10

Abstract

The utility model provides an insulating fire-resistant power cable of copper core polyethylene relates to a wire and cable technical field. The utility model discloses an including cable body and the cable core of setting in cable body, the cable core is including the first cable core and the second cable core that set up side by side, first cable core and second cable core structure are the same, be provided with the copper core in the first cable core, the outer cladding of first cable core has the polyethylene insulating layer, the cable body is including from interior to exterior setting gradually the inner liner, the first insulation layer, first fire-retardant restrictive coating, the stratum reticulare is woven to first stainless steel wire, compound mica tape of pottery silicon rubber, the second insulating layer, the fire-retardant restrictive coating of second, stratum reticulare and third insulating layer are woven to the stainless steel wire of second, be provided with the filling layer in the cable core, the intussuseption of first insulation is filled with a plurality of inorganic fiber balls. The utility model discloses completely isolated splash and flame, under continuous high temperature exposes, can keep its structure.

Description

Copper core polyethylene insulation fire-resistant power cable

Technical Field

The utility model relates to a wire and cable technical field especially relates to an insulating fire-resistant power cable of copper core polyethylene.

Background

The existing wire and cable insulation and sheath materials are almost all organic materials or partially contain organic materials including polytetrafluoroethylene materials, the melting point is not more than 400 ℃, and the using temperature is not more than 350 ℃. Then, in high-temperature areas of other industries such as metallurgy, electric heating devices, heating pipes, ovens, thermocouples, temperature sensors, electric furnaces, furnaces and the like, the traditional electric wire cannot meet the requirement of high temperature resistance.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists in the above-mentioned problem, the utility model provides an insulating fire-resistant power cable of copper core polyethylene makes its completely isolated splash and flame, and under continuous high temperature exposes, can keep its structure.

In order to solve the problem, the utility model provides an insulating fire-resistant power cable of copper core polyethylene, wherein, including cable body and the cable core of setting in the cable body, the cable core is including the first cable core and the second cable core that set up side by side, first cable core and second cable core structure are the same, be provided with the copper core in the first cable core, the outer cladding of first cable core has the polyethylene insulating layer, the cable body is including from interior to exterior setting gradually the inner liner, the first insulation layer, first fire-retardant restrictive coating, the stratum reticulare is woven to first stainless steel wire, the compound mica tape of pottery silicon rubber, the second insulating layer, the fire-retardant restrictive coating of second, stratum reticulare and third insulating layer are woven to the stainless steel wire of second, be provided with the filling layer in the cable core, the intussuseption of first insulation layer is filled with a plurality of inorganic fiber balls.

Preferably, the first flame-retardant sheath layer and the second flame-retardant sheath layer are both polyvinyl chloride flame-retardant sheath layers, and the thickness of the polyvinyl chloride flame-retardant sheath layers is 1.5-2 mm.

Preferably, the first stainless steel wire knitted net layer and the second stainless steel wire knitted net layer are knitted by stainless steel wires with the diameter of 0.5 mm.

Preferably, the inner liner is a polyolefin waterproof inner liner.

Preferably, the filling layer adopts ceramic fireproof and fireproof filling ropes.

Preferably, the first insulating layer and the second insulating layer are polyvinyl chloride insulating materials.

Preferably, the third insulating layer is made of polyethylene insulating material.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model discloses completely isolated splash and flame, under continuous high temperature exposes, can keep its structure, nevertheless need avoid hydrofluoric acid, hot dense phosphoric acid has certain corrosion resisting property to other chemical.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of 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 will be further described in detail with reference to the accompanying drawings and examples, which are not intended to limit the present invention.

As shown in fig. 1, the embodiment of the utility model discloses an including cable body and the cable core 3 of setting in cable body, cable core 3 is including the first cable core and the second cable core that set up side by side, first cable core and second cable core structure are the same, be provided with copper core 2 in the first cable core, the outer cladding of first cable core has polyethylene insulating layer 1, the cable body is including from interior to exterior setting gradually inner liner 5, first insulating layer 6, first fire-retardant restrictive coating 7, stratum reticulare 8 is woven to first stainless steel wire, the compound mica tape of pottery silicon rubber 9, second insulating layer 10, the fire-retardant restrictive coating 11 of second, stratum reticulare 12 and third insulating layer 14 are woven to the stainless steel wire of second, be provided with filling layer 4 in the cable core 3, the intussuseption of first insulating layer 6 is filled with a plurality of inorganic fiber balls 13.

The filling layer 4 adopts ceramic fireproof and fireproof filling ropes.

The lining layer 5 is a polyolefin waterproof lining layer.

The first flame-retardant sheath layer 7 and the second flame-retardant sheath layer 11 are both polyvinyl chloride flame-retardant sheath layers, and the thickness of each polyvinyl chloride flame-retardant sheath layer is 1.5-2 mm.

The first stainless steel wire knitted net layer 8 and the second stainless steel wire knitted net layer 12 are both knitted by stainless steel wires with the diameter of 0.5 mm.

First insulating layer 6 and second insulating layer 12 polyvinyl chloride insulating material.

The third insulating layer 14 is made of polyethylene insulating material.

The utility model discloses it also can be extended to 3 cores and above according to actual need to show with two cores.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A copper core polyethylene insulation fire-resistant power cable is characterized by comprising a cable body and a cable core arranged in the cable body, wherein the cable core comprises a first cable core and a second cable core which are arranged in parallel, the first cable core and the second cable core are identical in structure, the copper core is arranged in the first cable core, a polyethylene insulating layer is coated outside the first cable core, the cable body comprises an inner liner, a first insulating layer, a first flame-retardant sheath layer, a first stainless steel wire braided net layer, a ceramic silicon rubber composite mica tape, a second insulating layer, a second flame-retardant sheath layer, a second stainless steel wire braided net layer and a third insulating layer which are sequentially arranged from inside to outside, a filling layer is arranged in the cable core, and a plurality of inorganic fiber balls are filled in the first insulating layer;

the first flame-retardant sheath layer and the second flame-retardant sheath layer are both polyvinyl chloride flame-retardant sheath layers, and the thickness of each polyvinyl chloride flame-retardant sheath layer is 1.5-2 mm;

the first stainless steel wire woven net layer and the second stainless steel wire woven net layer are both formed by weaving stainless steel wires with the diameter of 0.5 mm;

the lining layer is a polyolefin waterproof lining layer;

the filling layer adopts ceramic fireproof and fireproof filling ropes;

a first insulating layer and a second insulating layer polyvinyl chloride insulating material;

the third insulating layer is made of polyethylene insulating material.