Leakage coaxial cable with strong radiation signals for coal mine

A technology for leaking coaxial cables and radiating signals, which is applied in the direction of bendable cables, insulated cables, cables, etc., can solve the problems of difficult propagation of electromagnetic waves or limited effective propagation distance, rough walls, complex structures, etc., and achieves good flexibility, Improves mechanical resistance and facilitates laying

Inactive Publication Date: 2014-11-19
安徽宏源特种电缆集团有限公司
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  • Abstract
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Problems solved by technology

[0002]In closed spaces such as mines and tunnels, due to the existence of many corners, complex structures and rough walls, electromagnetic waves ar

Method used

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  • Leakage coaxial cable with strong radiation signals for coal mine

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Embodiment Construction

[0013] A leaky coaxial cable for coal mines with strong radiating signals. The center of the cable is provided with a single conductor 1, and the conductor is a copper wire or a copper-clad aluminum wire; the conductor 1 is extruded and wrapped with a layer of foamed polyethylene as an insulating layer 2. Weave a layer of annealed copper wire asymmetrically outside the insulating layer 2 as the leakage braid 3; two anti-drag steel wire ropes 6 are arranged between the insulation layer 2 and the leakage braid 3; A layer of flame-retardant polyethylene is extruded as the inner sheath 4, and a layer of flame-retardant polyvinyl chloride is extruded outside the inner sheath 4 as the outer sheath 5; several axial grooves 7 are arranged on the outer sheath , the said axial groove 7 is filled with fluorescent strips.

[0014] The conductor 1 is formed by twisting 10-20 guide wires, and the guide wires are copper wires or copper-clad aluminum wires. The leaky braiding layer 3 has 24 ...

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Abstract

The invention discloses a leakage coaxial cable with strong radiation signals for a coal mine. A single conductor is arranged in the center of the cable; the conductor is a copper wire or copper-clad aluminium wire; a layer of foaming polyethylene tightly covers the conductor, and is used as an insulating layer; a layer of annealed copper wire is asymmetrically weaved outside the insulating layer, and is used as a leakage weaving layer; two dragging resistant steel wire ropes are arranged between the insulating layer and the leakage weaving layer; a layer of inflaming retarding polyethylene also tightly covers the leakage weaving layer, and is used as an inner sheath; a layer of inflaming retarding polyvinyl chloride further tightly covers the inner sheath, and is used as an outer sheath; a plurality of axial grooves are formed in the outer sheath, and are filled with fluorescent belts. The leakage coaxial cable meets the requirement of other indexes of electrical performance and mechanical performance, and meanwhile further has the ability of the strong radiation signals, and softer mechanical performance.

Description

technical field [0001] The invention relates to a leaky coaxial cable for coal mines with strong radiation signal, which belongs to the field of electric wires and cables. Background technique [0002] In closed spaces such as mines and tunnels, due to the existence of many corners, complex structures and rough walls, they have the effect of blocking, reflecting and absorbing electromagnetic waves, making it difficult for electromagnetic waves to propagate or the effective propagation distance is limited. This kind of soft leaky coaxial cable with a strong radiating signal happens to be the most effective solution. This kind of leaky coaxial cable with good soft performance is laid under the condition of complex curved channel in the mine, which can greatly reduce the loss caused by uneven signal transmission caused by repeated bending during the laying process. At the same time, because of the asymmetric thin weave, the leaked transmission signals cannot be coupled and con...

Claims

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Application Information

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IPC IPC(8): H01B7/04H01B7/17H01B1/02
Inventor 姜绪宏刘辉姜茂盛张小平余小葵丁云春
Owner 安徽宏源特种电缆集团有限公司
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