Shielding layer structure of flame-retardant cable and production process thereof

A technology of flame retardant cables and shielding layers, applied in power cables with shielding layers/conducting layers, insulating cables, insulating conductors/cables, etc. It can achieve the effect of reducing insulation pollution, small deformation and simple structure

Inactive Publication Date: 2009-12-23
上海德力西集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the surface of the conductor of the current mining cable is not smooth and round, which is easy to cause tip discharge, resulting in imperfect electric field structure; uneven electric field, poor shielding of the external electric field, and insulation pollution

Method used

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  • Shielding layer structure of flame-retardant cable and production process thereof

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Embodiment Construction

[0021] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0022] see figure 1 As shown, the shielding layer structure of the flame-retardant cable of the present invention includes a conductor shielding layer 2 and an insulating shielding layer 3 respectively bonded to the inner wall and the outer wall of the insulating layer 1 of the flame-retardant cable.

[0023] Preferably, both the conductor shielding layer 2 and the insulating shielding layer 3 are chlorinated polyethylene rubber shielding layers.

[0024] More preferably, the chlorinated polyethylene rubber shielding layer includes 35% by weight of chlorinated polyethylene rubber.

[0025] Furthermore, the chlorinated polyethylene rubber shielding layer also includes a compounding agent. In a specific embodiment of the present invention, the compounding agent is highly conductive graphite.

[0026] In a specific embodiment of the present i...

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Abstract

The invention relates to a shielding layer structure of a flame-retardant cable, comprising a conductor shielding layer and an insulation shielding layer which are separately jointed with the inner and outer walls of the insulation layer of the flame-retardant cable. The shielding layer structure has the advantages that the conductor shielding layer and the insulation shielding layer are both chlorinated polyethylene rubber shielding layer, the conductor shielding layer is extrusion shielding layer, the insulation shielding layer has a combined structural style which combines extrusion shielding and woven metal / fiber together, and coextrusion continuous vulcanization molding is carried out on the conductor shielding layer, insulation layer and the insulation shielding layer. The invention also provides a production process of the shielding layer structure of the flame-retardant cable. The shielding layer structure of the invention has ingenious design, simple structure, and reliable and safe use, thus being able to change the structure of the electric field, homogenizing the electric field and lowering the isolate pollution; the shielding layer structure is applicable to the shielding layer structure of mine cables.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to the technical field of flame-retardant cables, in particular to a shielding layer structure of a flame-retardant cable and a production process thereof. Background technique [0002] Flame-retardant cables for coal mines refer to wire and cable products for ground equipment and underground equipment dedicated to the coal mining industry. The environmental conditions of cables used in coal mines are very complicated, the working conditions are very harsh, and the area where gas and coal dust gather is very dangerous, which is easy to cause explosion, causing serious personal casualties and property losses. Therefore, higher requirements are put forward for the safety characteristics of cables used in coal mines. [0003] However, the conductor surface of the current mine cable is not smooth and round, which is easy to cause tip discharge, resulting in imperfect electric field stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/17H01B7/295H01B9/02H01B13/14
Inventor 林少东赵翠琴
Owner 上海德力西集团有限公司
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