Multi-core-layer inorganic mineral insulation flexible fireproof cable and preparation method thereof

A technology of inorganic minerals and fireproof cables, which is applied in the manufacture of insulating cables, inorganic insulators, and cables/conductors, and can solve problems such as low efficiency, long mixing time, and inconvenient discharge.

Active Publication Date: 2021-04-02
GUANGDONG NANYANG CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the blanking process of the internal mixer, the rubber mixing box of the internal mixer cannot completely discharge the raw materials, and the discharge is inconvenient, and in the process of mixing, the mixing time is long, the efficiency is low, and After feeding, due to the rotation of the rotor, the added powder will fly, which will have a great impact on the operating environment

Method used

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  • Multi-core-layer inorganic mineral insulation flexible fireproof cable and preparation method thereof
  • Multi-core-layer inorganic mineral insulation flexible fireproof cable and preparation method thereof
  • Multi-core-layer inorganic mineral insulation flexible fireproof cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105]S1. Remove impurities on the metal surface, straighten after drying, wire drawing and annealing to make conductive wire core,

[0106] A plurality of conductive wire cores are stranded to make a cable core;

[0107] S2. Wrapping an inorganic mineral insulating layer outside the cable core, setting a filling layer between multiple cable cores, and then continuing to coat the outer layer with an inorganic mineral tape;

[0108] S3. Extrude the aluminum alloy tube through the aluminum tube extrusion machine, and coat the aluminum alloy tube sleeve on the inorganic mineral tape to form a semi-finished cable;

[0109] S4. Wrap an oxygen barrier layer on the outer side of the semi-finished cable, and finally extrude a flame-retardant outer sheath on the outer side to make a multi-core inorganic mineral insulated flexible fireproof cable.

[0110] Wherein, the preparation steps of the inorganic mineral insulating layer used in step S2 are as follows:

[0111] (1) In terms of ...

Embodiment 2

[0129] S1. Remove impurities on the metal surface, straighten after drying, wire drawing and annealing to make conductive wire core,

[0130] A plurality of conductive wire cores are stranded to make a cable core;

[0131] S2. Wrapping an inorganic mineral insulating layer outside the cable core, setting a filling layer between multiple cable cores, and then continuing to coat the outer layer with an inorganic mineral tape;

[0132] S3. Extrude the aluminum alloy tube through the aluminum tube extrusion machine, and coat the aluminum alloy tube sleeve on the inorganic mineral tape to form a semi-finished cable;

[0133] S4. Wrap an oxygen barrier layer on the outer side of the semi-finished cable, and finally extrude a flame-retardant outer sheath on the outer side to make a multi-core inorganic mineral insulated flexible fireproof cable.

[0134] Wherein, the preparation steps of the inorganic mineral insulating layer used in step S2 are as follows:

[0135] (1) In terms of...

Embodiment 3

[0153] S1. Remove impurities on the metal surface, straighten after drying, wire drawing and annealing to make conductive wire core,

[0154] A plurality of conductive wire cores are stranded to make a cable core;

[0155] S2. Wrapping an inorganic mineral insulating layer outside the cable core, setting a filling layer between multiple cable cores, and then continuing to coat the outer layer with an inorganic mineral tape;

[0156] S3. Extrude the aluminum alloy tube through the aluminum tube extrusion machine, and coat the aluminum alloy tube sleeve on the inorganic mineral tape to form a semi-finished cable;

[0157] S4. Wrap an oxygen barrier layer on the outer side of the semi-finished cable, and finally extrude a flame-retardant outer sheath on the outer side to make a multi-core inorganic mineral insulated flexible fireproof cable.

[0158] Wherein, the preparation steps of the inorganic mineral insulating layer used in step S2 are as follows:

[0159] (1) In terms of...

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Abstract

The invention discloses a multi-core-layer inorganic mineral insulation flexible fireproof cable and a preparation method thereof, belonging to the technical field of power cables. The multi-core-layer inorganic mineral insulation flexible fireproof cable comprises cable cores, inorganic mineral insulation layers, filling layers, inorganic mineral wrapping tapes, a metal tube composite layer, an oxygen barrier layer and a flame-retardant outer sheath, wherein each cable core is formed by twisting a plurality of groups of conductive cores, the outer side of each cable core is coated with the inorganic mineral wrapping tape, and the filling layers are arranged between the cable cores coated with the inorganic mineral insulating layers and the inorganic mineral wrapping tapes. The cable has good flexibility and flame retardance, and is excellent in mechanical shock resistance and waterproof performance under the condition of fire.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a multi-core layer inorganic mineral insulated flexible fireproof cable and a preparation method thereof. Background technique [0002] As the main energy source in contemporary society, electricity is inseparable from wires and cables for its transmission and transmission of signal information. With the rapid development of economy and society, the demand for electricity is increasing, and the application of large-load and ultra-high-voltage power transmission technology is becoming more and more common. Cable laying The distance is significantly increased, which leads to the increasingly prominent fire hazard of wires and cables. At the same time, because the outer sheath and insulating layer of the cable are generally made of plastic and rubber materials, which are flammable, when the cable is overloaded, short-circuited, local overheated, etc. or under the action of exte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/02H01B7/04H01B3/02H01B3/10H01B7/18H01B7/20H01B7/28H01B7/282H01B7/29H01B7/295H01B13/02H01B13/08H01B13/22H01B13/26
CPCH01B7/0045H01B7/02H01B7/04H01B3/02H01B3/10H01B7/18H01B7/182H01B7/1875H01B7/205H01B7/282H01B7/2806H01B7/29H01B7/292H01B7/295H01B13/02H01B13/08H01B13/22H01B13/26
Inventor 曾钦武赵晓坡罗旭琴李应钦林聪智
Owner GUANGDONG NANYANG CABLE CO LTD
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