Low-smoke halogen-free flame-retardant comprehensive shielded subway light rail signal cable

A technology of comprehensive shielding and signal cables, applied in the field of signal cables in the field of rail transit, to achieve the effects of enhanced mechanical and physical properties and flame retardant properties, reduced mutual interference, and good shielding function

Inactive Publication Date: 2010-12-01
JIANGSU HENGTONG WIRE & CABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing signal cables used in the field of subway light rail and other rail transportation, the present invention provides a low-smoke, halogen-free, flame-retardant comprehensive shielded signal cable for subway light rail

Method used

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  • Low-smoke halogen-free flame-retardant comprehensive shielded subway light rail signal cable
  • Low-smoke halogen-free flame-retardant comprehensive shielded subway light rail signal cable

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Embodiment Construction

[0011] refer to figure 1 , a conductor 1 with a diameter between 0.40mm-1.53mm is coated with an insulating layer 2 of a skin-bubble-skin structure or a bubble-skin structure to make a wire 3, and the wire 3 is twisted to make a wire group 4, and the Half or more of the wire groups are coated with the shielding layer 7 to form the wire group 6 provided with the shielding layer 7 . The shielding layer 7 is made of double-layer or single-layer copper strip wrapping or single-layer copper strip embossing longitudinal wrapping or braided by copper wire or tinned copper wire. Then several wire groups 4 and several wire groups 6 with shielding layers 7 are twisted into a cable core 5, and after the cable core 5 is covered with a cable core tape layer 8, an aluminum-plastic composite tape or a pure aluminum tape or a pure aluminum tape is used. Copper tape longitudinally clad cable core shielding layer 9, and then wrapped with double-layer steel tape or single-layer steel tape embos...

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Abstract

The invention relates to a low-smoke halogen-free flame-retardant comprehensive shielded subway light rail signal cable comprising a cable core and an outer jacket. A plurality of lead groups are arranged in the cable core, a cable core taping layer and a metal strip armored shielding layer are sequentially coated between the cable core and the outer jacket, shielding layers are arranged outside half or more of the lead groups in the plurality of lead groups, and a cable core shielding layer is arranged between the cable core taping layer and the metal strip armored shielding layer. In the invention, a conductor of each lead has the diameter of 0.40-1.53 mm, and each lead has an insulation layer in a hull-foam-hull structure or a foam-hull structure. The shielding layer of the lead group is in the structure of wrapping a bilayer or single-layer copper strip or longitudinally wrapping a single-layer corrugated copper strip or weaving copper wire or tinned copper wire, and the cable core shielding layer is formed by longitudinally wrapping an aluminum-plastic composite strip or a pure aluminum strip or a pure copper strip. The invention has favorable shielding function, can lessen the mutual interference between cable lead groups and the interference of an external electromagnetic field with the cable, has enhanced mechanical and physical performance and flame-retardant performance, and can satisfy the signal cable use requirement of a traditional subway light rail system.

Description

technical field [0001] The invention relates to a signal cable, in particular to a signal cable used in the field of rail transportation such as subway light rail. Background technique [0002] The existing signal cables used in the field of rail transit such as subway light rail, its basic structure is: the insulated wires are twisted into a wire group, the wire group is twisted into a cable core, and the steel tape armored shielding layer and the outer sheath are wrapped around the cable core. set. The insulation layer structure of the insulated wire is a solid core insulation layer, and the transmission attenuation is relatively large; there is no electromagnetic shielding structure between the wire groups in the cable core, and there is a certain mutual interference; there is only one layer of steel tape armored shielding outside the cable core Layer, the ability to resist electromagnetic interference is poor. Contents of the invention [0003] In order to overcome t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/17H01B7/29H01B7/22
Inventor 金春敏王国权吴刚孙国跃姜勤荣薄方荣
Owner JIANGSU HENGTONG WIRE & CABLE TECH
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