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Fireproof and explosion-proof power cable and preparation method thereof

A technology for power cables and cable cores, applied in the field of fireproof and explosion-proof power cables and their preparation, can solve problems such as fires and secondary disasters, achieve the effects of eliminating explosions, preventing static sparks, and improving physical and mechanical properties and flame retardant performance

Pending Publication Date: 2021-08-06
ANHUI HUANENG CABLE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some high-risk special places such as power plants, substations, and industrial and mining enterprises use a large number of power cables. Once the cables catch fire and explode, it will cause serious fires and cause secondary disasters.

Method used

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  • Fireproof and explosion-proof power cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] refer to figure 1 , A fire-proof and explosion-proof power cable proposed by the present invention includes: a cable core, an outer insulating layer 4 wrapped around the outside of the cable core, an inner sheath 5 longitudinally wrapped outside the outer insulating layer 4, and an inner sheath 5 wrapped around The outer high temperature cladding layer 6 and the outer sheath 7 extruded and wrapped outside the high temperature cladding layer 6;

[0043]The cable core includes a plurality of conductors 1 and an inner insulating layer 2 wrapped around the outside of the conductor 1; the conductor 1 is formed by twisting and pressing a plurality of copper wires; the inner insulating layer 2 adopts an inorganic refractory synthetic mica tape. It is formed by wrapping and drying; the gap in the cable core is filled with inorganic refractory filling material 3 magnesium hydroxide;

[0044] The outer insulating layer 4 is made of inorganic refractory synthetic mica tape wrappe...

Embodiment 2

[0062] Compared with Example 1, the raw material ratio of the chlorinated polyethylene rubber sheathing material is different, and the details are as follows:

[0063] The raw materials of the chlorinated polyethylene rubber sheathing material, in parts by weight, include: 90 parts of chlorinated polyethylene resin, 10 parts of EPDM rubber, 20 parts of acetylene carbon black, 40 parts of graphite powder, and 20 parts of nano aluminum hydroxide , 1 part of antioxidant, 2.8 parts of organic peroxide, 3 parts of accelerator, 1 part of coupling agent KH560, 5 parts of magnesium oxide, 20 parts of processing oil, 4 parts of other additives;

[0064] Among them, the nano aluminum hydroxide is an aluminate coupling agent modified nano aluminum hydroxide, and its preparation is as follows: adding the anhydrous ethanol solution of the aluminate coupling agent into the nano aluminum hydroxide, and stirring the reaction at 40 ° C 6h, centrifuge, wash, dry, grind, and obtain; wherein, the...

Embodiment 3

[0066] Compared with Example 1, the raw material ratio of the chlorinated polyethylene rubber sheathing material is different, and the details are as follows:

[0067] The raw materials of the chlorinated polyethylene rubber sheathing material, in parts by weight, include: 90 parts of chlorinated polyethylene resin, 10 parts of EPDM rubber, 30 parts of acetylene carbon black, 20 parts of graphite powder, and 30 parts of nano aluminum hydroxide , 2 parts of antioxidant, 4.2 parts of organic peroxide, 4 parts of accelerator, 2 parts of coupling agent KH560, 15 parts of magnesium oxide, 30 parts of processing oil, 6 parts of other additives;

[0068] Among them, the nano aluminum hydroxide is an aluminate coupling agent modified nano aluminum hydroxide, and its preparation is as follows: adding the anhydrous ethanol solution of the aluminate coupling agent into the nano aluminum hydroxide, and stirring the reaction at 50 ° C 4h, centrifuge, wash, dry, grind, and obtain; wherein, ...

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Abstract

The invention discloses a fireproof and explosion-proof power cable and a preparation method thereof, and relates to the technical field of power cables. The fireproof and explosion-proof power cable comprises a cable core, an outer insulating layer wrapping the cable core, an inner sheath longitudinally wrapping the outer insulating layer, a high-temperature belting layer wrapping the inner sheath, and an outer sheath extruding the high-temperature belting layer, wherein the cable core comprises a plurality of conductors and an inner insulating layer wrapping the conductors; each conductor is formed by twisting and pressing a plurality of copper wires; the inner insulating layer is formed by wrapping and drying an inorganic fire-resistant synthetic mica tape; and a gap in the cable core is filled with an inorganic fireproof filling material. The product provided by the invention has the advantages of fire prevention, bulletproof, static explosion resistance, high-strength impact resistance, cutting resistance, corrosion resistance, radiation protection and the like, and the potential safety hazard of the cable in various military and major civil engineering is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a fire-proof and explosion-proof power cable and a preparation method thereof. Background technique [0002] At present, there are only simple fire-proof or explosion-proof cables in the domestic market, and explosion-proof cables only have electrostatic explosion-proof functions. However, some high-risk special places such as power plants, substations and industrial and mining enterprises use a large number of power cables. Once the cables catch fire and explode, it will cause serious fires and cause secondary disasters. Therefore, in order to meet the fire and explosion-proof requirements of some explosion-hazardous places, it is urgent to develop a new type of fire-proof and explosion-proof cable, which can break through various problems by changing the internal structure of the cable and the performance of the cable material. The development of new fire-proof and explos...

Claims

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Application Information

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IPC IPC(8): H01B7/295H01B7/00H01B7/04H01B7/17H01B7/18H01B7/20H01B7/28H01B7/282H01B9/02H01B13/02H01B13/06H01B13/22H01B13/24H01B13/26
CPCH01B7/295H01B7/1875H01B7/282H01B7/17H01B9/021H01B7/207H01B7/1865H01B7/187H01B7/0009H01B7/04H01B7/2806H01B13/02H01B13/06H01B13/221H01B13/22H01B13/2606H01B13/24
Inventor 付世财盛睿宫传播吴本健王洁然王业林
Owner ANHUI HUANENG CABLE GRP
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