Fire-resistant and highly flame-retardant power lock type cable

A highly flame-retardant, locking technology, applied in power cables, power cables with shielding/conducting layers, insulated cables, etc., can solve the problems of random movement of the core, troublesome protective layer, etc., to avoid random movement , The effect of improving the flame retardant grade and improving the manufacturing efficiency

Inactive Publication Date: 2018-03-23
CHENGDU RONGCHUANG ZHIGU SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fire-resistant and highly flame-retardant electric lock type cable to solve the technical problem that the protective layer is very troublesome due to the random movement of the wire core when the protective layer is set outside the multi-strand wire core. Efficiency of protective layer outside strand core

Method used

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  • Fire-resistant and highly flame-retardant power lock type cable
  • Fire-resistant and highly flame-retardant power lock type cable
  • Fire-resistant and highly flame-retardant power lock type cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A fire-resistant and highly flame-retardant electric lock type cable, the cable includes a cable core composed of multiple strands of wire cores, the cable core is wrapped with a protective layer, and the first filling layer is filled between the cable core and the protective layer. The wire core inside is protected by a protective layer. Each strand of wire core includes multiple groups of core materials and insulating layers wrapped outside the multiple groups of core materials. Multiple groups of core materials may be distributed around the group core material. Multiple groups of core materials are wrapped with insulating layers, and the gap between the core materials and the insulating layers is filled with a second filling layer, which can cause interference between multiple groups of wire cores through the insulating layers. Of course, an insulating layer can also be provided outside each group of core materials, and the insulating layer on the core material is s...

Embodiment 2

[0025] On the basis of Example 1, the protective layer includes polyethylene filled vulcanized insulation layer, copper wire braided shielding layer, aluminum halogen-free low-smoke flame-retardant polyolefin bonded protective layer arranged sequentially from the inside to the outside, The flame-retardant polyolefin bonding protection layer mainly utilizes the characteristics of halogen-free low-smoke flame-retardant polyolefin materials that do not contain halogens and other heavy metals such as lead, cadmium, chromium, and mercury. Corrosive gases are released and very little smoke is produced.

Embodiment 3

[0027] On the basis of Embodiment 1 or Embodiment 2, the outer side of the upper surface of the locking strip is a slope.

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Abstract

The invention discloses a fire-resistant and highly flame-retardant power lock type cable, belonging to the technical field of power cables, and aiming to provide the fire-resistant and highly flame-retardant power lock type cable which can improve the efficiency of arranging a protective layer outside multi-strand wire cores. The cable comprises a cable core and a protective layer; each strand ofwire core comprises multiple sets of core materials and an insulating layer, and the space between the core materials and the insulating layer is filled with a second filling layer; a positioning protrusion is arranged on the outer cylindrical surface of the insulating layer of each strand of wire core, a first groove-shaped structure is arranged on the side surface of each positioning protrusion, a second groove is formed in the lower edge of each positioning protrusion, and a convex edge protrusion is arranged on the outer end of the second groove; the outer cylindrical surface of the insulating layer of each strand of wire core is provided with a second groove-shaped structure respectively, and the lower edge of the second groove-shaped structure is provided with a protruding structure, and one end of the protruding structure is provided with a clamping groove adapted to the edge protrusion; and when the adjacent two strands of wire cores are connected, a locking bar is arranged inthe space formed by the first groove-shaped structure of one strand of wire core and the second groove-shaped structure of another strand of wire core.

Description

technical field [0001] The invention belongs to the technical field of power cables, and in particular relates to a fire-resistant and high-flame-resistance electric lock type cable. Background technique [0002] With the rapid development of our country's national economy and the continuous improvement of people's living standards, the requirements for accelerating the construction of urban special-purpose power grids are becoming increasingly urgent. However, the application occasions of communication cables are complex, and the performance requirements for cables are extremely strict. Cables must have good mechanical and physical properties and be able to withstand various mechanical stresses, and the electrical properties will not deteriorate in harsh environments, so as to ensure long-term reliable work. However, existing cables generally have disadvantages such as poor shielding effect, low transmission speed, and poor anti-interference ability, especially for cables ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/02H01B7/17H01B7/18H01B7/282H01B7/29H01B7/295H01B7/40H01B7/42H01B9/00H01B9/02
CPCY02A30/14H01B7/0009H01B7/0045H01B7/02H01B7/0208H01B7/17H01B7/1805H01B7/2825H01B7/29H01B7/295H01B7/40H01B7/421H01B9/006H01B9/021H01B9/024
Inventor 章显红
Owner CHENGDU RONGCHUANG ZHIGU SCI & TECH
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