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

A technology of flame retardant cable and insulating layer, applied in the direction of conductor/cable insulation, insulated cable, insulated conductor, etc., can solve the problems of inability to meet production requirements, contact between cables and workers, low voltage level, etc., to improve long-term operating temperature , Simple structure, the effect of improving the voltage level

Inactive Publication Date: 2009-12-23
上海德力西集团有限公司
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AI Technical Summary

Problems solved by technology

[0003] However, the voltage level of the current mining cables is too low to meet the increasing production requirements; and the mine is extremely humid, with a lot of water, and the cables are often in contact with workers, so the cables are required to have sufficient electrical insulation performance to ensure personal safety

Method used

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

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Embodiment Construction

[0020] In order to be able to understand the technical content of the present invention more clearly, the following embodiments are specifically described in detail.

[0021] See figure 1 As shown, the insulating layer structure of the flame-retardant cable of the present invention includes an insulating layer 1, and the insulating layer 1 is an ethylene-propylene rubber insulating layer.

[0022] Preferably, the insulating layer structure of the flame-retardant cable further includes a conductor shielding layer 2 and an insulating shielding layer 3. The conductor shielding layer 2, the insulating layer 1 and the insulating shielding layer 3 are sequentially pasted from the inside to the outside. Together.

[0023] In a specific embodiment of the present invention, the conductor shielding layer 2, the insulating layer 1 and the insulating shielding layer 3 are co-extruded and continuously vulcanized.

[0024] Preferably, the ethylene-propylene rubber insulation layer comprises 35-...

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Abstract

The invention relates to an insulation layer structure of a flame-retardant cable, comprising an insulation layer which is ethylene propylene rubber (EPR) insulation layer and the insulation layer structure has the advantages that the insulation layer structure of the flame-retardant cable also comprises a conductor shielding layer and an insulation shielding layer, the conductor shielding layer, insulation layer and the insulation shielding layer are jointed together in turn from inside to outside, and the EPR insulation layer contains 35-40% (weight) of EPR. The invention also provides a production process of the insulation layer structure of the flame-retardant cable. The insulation layer structure of the flame-retardant cable has ingenious design, simple structure, better temperature resistant level, insulation performance, physical and mechanical properties and aging quality, so that the long-time running temperature of cable conductor is allowed to be increased, the use is safe and reliable and the voltage grade of the cable can is allowed to be increased, thus be applicable to the insulation layer structure of mine cables.

Description

Technical field [0001] The present invention relates to the technical field of cables, in particular to the technical field of flame-retardant cables, and specifically refers to an insulating layer structure of a flame-retardant cable and its production process. 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 the cables used in coal mines are very complicated, the working conditions are very harsh, and the areas where gas and coal dust collect are very dangerous, which can easily cause explosions, causing serious personal injuries and property losses. Therefore, higher requirements are put forward for the safety characteristics of cables used in coal mines. [0003] However, the voltage level of the current mining cables is too low to meet the increasing production requirements; and the mine is extremely humid, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/295H01B3/28H01B13/14
Inventor 林少东赵翠琴
Owner 上海德力西集团有限公司
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