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Isolation type middle-high voltage fireproof cable

A fireproof cable, medium and high voltage technology, applied in the direction of insulated cable, power cable, power cable with shielding layer/conductive layer, etc., can solve the problem of difficult bending of inorganic flame-retardant cables, achieve small bending force, avoid lightning strikes Wear, good corrosion resistance effect

Pending Publication Date: 2021-06-11
郭智昊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, it is necessary to provide an isolated medium and high voltage fireproof cable to solve the shortcomings of the existing inorganic flame retardant cables that are difficult to bend

Method used

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  • Isolation type middle-high voltage fireproof cable
  • Isolation type middle-high voltage fireproof cable
  • Isolation type middle-high voltage fireproof cable

Examples

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Effect test

Embodiment 1

[0029] see Figure 1-3 , an isolated medium and high voltage fireproof cable in this embodiment, comprising a cable core 1 and a protective jacket, the cable core 1 is arranged in the protective jacket, and the protective jacket includes a first insulating layer 21, a metal shielding layer from the inside to the outside 22. The second insulating layer 23, the flame-retardant layer 24, the corrosion-resistant layer 25 and the outer protective layer 27. The flame-retardant layer 24 is formed at intervals between the outer surface of the second insulating layer 23 and the inner surface of the corrosion-resistant layer 25, so The flame retardant layer 24 is filled with flame retardant particles, and the outer surface of the second insulating layer 23 is provided with protruding ribs 3 , and the protruding ribs 3 are spirally arranged.

[0030] There is a distance H between the side of the protruding ribs 3 away from the second insulating layer 23 and the corrosion-resistant layer ...

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Abstract

The invention relates to the technical field of cable devices, and discloses an isolation type middle-high voltage fireproof cable. The isolation type middle-high voltage fireproof cable is characterized by comprising a cable core and a protective jacket, wherein the cable core is arranged in the protective jacket, the protective jacket comprises a first insulating layer, a metal shielding layer, a second insulating layer, a flame-retardant layer, a corrosion-resistant layer and an outer protective layer from inside to outside, the flame-retardant layer is formed by spacing the outer side surface of the second insulating layer and the inner side surface of the corrosion-resistant layer, and the flame-retardant layer is filled with flame-retardant particles; the outer side face of the second insulating layer is provided with protruding ribs which are arranged in a protruding manner, and the protruding ribs are arranged in a spiral manner. The flame-retardant cable has good bending performance, and a flame-retardant structure is not prone to being damaged.

Description

technical field [0001] The invention relates to the technical field of cable equipment, in particular to an isolated medium and high voltage fireproof cable. Background technique [0002] At present, the national standard for the implementation of ordinary flame-retardant cables is: GB / T18380-2008 (hereinafter referred to as the national standard). Class D currently judges the category of flame-retardant cables by calculating the "non-metallic content" of each meter of cable installed and laid. In addition to the conductor of ordinary flame-retardant cables being metal (copper or aluminum), the others (insulation, filling, wrapping tape, sheath) are all "non-metallic". The following are the indicators and requirements of the national standard flame-retardant cable vertical bundle combustion test. [0003] At present, there are more and more types of flame retardant cables on the market. Most of the designs are filled with flame retardants on the outer layer of the cables. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/29H01B7/02H01B7/17H01B7/18H01B7/28H01B7/295H01B9/00H01B9/02
CPCH01B7/29H01B7/295H01B7/17H01B7/0216H01B7/2806H01B7/18H01B9/00H01B9/02
Inventor 郭智昊
Owner 郭智昊
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