Direct-current power and control composite cable for rail transit

Abstract

The invention discloses a direct-current power and control composite cable for rail transit, and relates to the field of cables. The composite cable comprises a power cable core and at least one control cable core, and the control cable cores are arrayed outside the power cable core in a surrounding mode; the power cable core comprises a first conductor formed by multiple stranded copper wires, wherein the first conductor is wrapped by a first insulating layer; each control cable core comprises two control core wires stranded in pairs, and each control core wire comprises a second conductor formed by stranding multiple copper wires, wherein the second conductor is wrapped by a second insulating layer. The power cable and the control cables are effectively combined, laying investment and material production cost are reduced, and laying space is reduced; the power cable and the control cables do not disturb each other, and safety of system operation is ensured; the composite cable has the advantages of being fireproof, large in carrying capacity, resistant to impact voltage and mechanical damage, free of halogen or toxicity, anti-explosion, waterproof, resistant to corrosion, long in service life, safe, structurally flexible and resistant to mechanical vibration, overloads and high temperature.

Description

technical field [0001] The invention relates to the field of cables, in particular to a DC power and control composite cable for rail transit. Background technique [0002] The urban rail transit system uses direct current as the power, and uses various automation equipment with electronic computer processing technology as the core to maintain the normal operation of the vehicle. Automation equipment includes train automatic control system, power supply system management automation system, environmental monitoring system, fire alarm system, etc. These systems each form a network, and a central computer is installed in the control center of the rail transit system to achieve unified command and hierarchical control. [0003] With the rapid development of my country's urban rail transit industry, the demand for rail transit cables is also increasing. In order to ensure the transmission of power supply and control signals, both power cables and control cables are required in t...

AI Technical Summary

Problems solved by technology

Because the distance between the power cable and the control cable is too close to easily cause electromagnetic interference, the existing power cables and control cables for rail transit are laid separately

Since urban rail transit is mostly underground and the space for laying cables is narrow, separate power cables and control cables will take up a large space, resulting in troublesome installation and maintenance of power cables and control cables

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