A kind of multi-core layer inorganic mineral insulated flexible fireproof cable and preparation method thereof

A technology of inorganic minerals and fireproof cables, which is used in the manufacture of insulated cables, inorganic insulators, cables/conductors, etc., can solve the problems of inability to discharge the rubber mixing box, the influence of the operating environment, and the long mixing time, and achieves thermal stability and Excellent mechanical properties, ensure safe operation, good waterproof effect

Active Publication Date: 2022-04-05
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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  • A kind of multi-core layer inorganic mineral insulated flexible fireproof cable and preparation method thereof
  • A kind of multi-core layer inorganic mineral insulated flexible fireproof cable and preparation method thereof
  • A kind of multi-core layer inorganic mineral insulated 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 a conductive wire core,

[0106] A plurality of conductive wire cores are twisted to form a cable core;

[0107] S2. Wrap an inorganic mineral insulating layer around the cable core, set a filling layer between multiple cable cores, and then continue to wrap the inorganic mineral tape on the outer layer;

[0108] S3. The aluminum alloy pipe extrusion operation is carried out through the aluminum pipe extrusion machine, and the aluminum alloy pipe sleeve is coated on the inorganic mineral tape to form the semi-finished product of the cable;

[0109] S4. Wrap the oxygen barrier layer on the outside of the semi-finished cable, and finally extrude the flame-retardant outer sheath on the outside 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 ...

Embodiment 2

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

[0130] A plurality of conductive wire cores are twisted to form a cable core;

[0131] S2. Wrap an inorganic mineral insulating layer around the cable core, set a filling layer between multiple cable cores, and then continue to wrap the inorganic mineral tape on the outer layer;

[0132] S3. The aluminum alloy pipe extrusion operation is carried out through the aluminum pipe extrusion machine, and the aluminum alloy pipe sleeve is coated on the inorganic mineral tape to form the semi-finished product of the cable;

[0133] S4. Wrap the oxygen barrier layer on the outside of the semi-finished cable, and finally extrude the flame-retardant outer sheath on the outside 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...

Embodiment 3

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

[0154] A plurality of conductive wire cores are twisted to form a cable core;

[0155] S2. Wrap an inorganic mineral insulating layer around the cable core, set a filling layer between multiple cable cores, and then continue to wrap the inorganic mineral tape on the outer layer;

[0156] S3. The aluminum alloy pipe extrusion operation is carried out through the aluminum pipe extrusion machine, and the aluminum alloy pipe sleeve is coated on the inorganic mineral tape to form the semi-finished product of the cable;

[0157] S4. Wrap the oxygen barrier layer on the outside of the semi-finished cable, and finally extrude the flame-retardant outer sheath on the outside 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...

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Abstract

The invention discloses a multi-core inorganic mineral insulated flexible fireproof cable and a preparation method thereof, and relates to the technical field of power cables, including a cable including a cable core, an inorganic mineral insulating layer, a filling layer, an inorganic mineral wrapping tape, a metal tube composite layer, Oxygen barrier layer and flame-retardant outer sheath, the cable core is formed by twisting multiple groups of conductive cores, and the outside of each cable core is covered with inorganic mineral tape, and the filling layer is set on the surface covered with inorganic mineral insulating layer. Between the cable core and the inorganic mineral tape. The cable has good flexibility, flame retardancy, and excellent mechanical impact resistance and waterproof performance under fire conditions.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a multi-core inorganic mineral insulated flexible fireproof cable and a preparation method thereof. Background technique [0002] As the main energy source of contemporary society, electricity is inseparable from wires and cables for transmission and signal information. With the rapid development of economy and society, the demand for electricity is increasing day by day. The distance increases significantly, resulting in the increasingly prominent fire hazard of wire and cable. 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, localized overheating and other faults or under the action of external heat, it is easy to cause the insulation resistance of the insulating material. If it falls, it will lose its insulating ability, or e...

Claims

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Application Information

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Patent Type & Authority Patents(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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