CN205264386U - Track traffic 1500V and multi -functional power cable of following DC traction - Google Patents

Abstract

This utility model discloses a 1500V and below DC traction multifunctional power cable for rail transit, comprising a set of combined conductors. The combined conductors consist of a double core composed of tinned copper wire and wound glass fiber copper wire, encased in an inner shielding layer. The combined conductors are subsequently covered with an insulation layer, an outer shielding layer, and a protective sheath. Compared with traditional technologies, this utility model offers superior signal transmission, and the breakage-resistant metal wire design further extends its service life.

Description

A rail transit 1500V and below DC traction multifunctional power cable

technical field

The utility model belongs to the field of cables, in particular to a rail transit 1500V and below DC traction multifunctional power cable.

Background technique

The technical requirements of the existing rail transit 1500V and below DC traction power cables are implemented in GB/T28429-2012: Rail transit 1500V and below DC traction power cables and accessories, used for power transmission of rail transit DC traction systems, its structure is from center to The outer layer is: cable copper conductor, extruded cross-linked polyethylene or ethylene propylene rubber or hard ethylene propylene rubber insulation layer. When necessary, there can be water blocking layer; when necessary, there can be waterproof layer; when necessary, there can be fire barrier layer; when necessary, there can be armor layer; coat. Ordinary rail transit cables will cause a series of problems such as poor conduction signal and easy breakage after long-term use.

Contents of the invention

Purpose of the invention: The purpose of this utility model is to provide a rail transit 1500V and below DC traction multifunctional power cable for the deficiencies of the prior art.

Technical solution: In order to achieve the purpose of the above invention, the utility model is specifically accomplished as follows: a rail transit 1500V and below DC traction multifunctional power cable, including a group of combined conductors, the combined conductors are made of tinned copper wires and wound The glass fiber copper wires form a double core, which is composed of an outer covering and an inner shielding layer, and the combined conductor is covered with an insulating layer, an outer shielding layer and a protective sleeve in turn.

Wherein, a set of metal wires is provided at the bottom of the insulating layer, which can keep the cable in a stable up and down position for a long time, and prevent breakage due to multiple rotations.

Further, the number of the metal wires is not more than 6, and the distance between two adjacent metal wires is less than 0.5 cm.

Beneficial effects: Compared with the traditional technology, the utility model has better signal transmission, and the anti-break wire design can further improve the service life.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

Example 1:

As shown in Figure 1, a rail transit 1500V and below DC traction multifunctional power cable disclosed by the utility model includes a group of combined conductors, and the combined conductors are composed of tinned copper wires 11 and wound glass fiber copper wires 12 to form a double wire The core is composed of an outer covering inner shielding layer 13, and the combined conductor is covered with an insulating layer 2, an outer shielding layer 3 and a protective sheath 4 in turn; the bottom of the insulating layer 2 is provided with a group of metal wires 5, and the number of metal wires 5 is not more than 6 strips, and the distance between two adjacent metal wires 5 is less than 0.5cm.

Claims (3)

1. a track traffic 1500V and following DC traction Multifunctional power cable; it is characterized in that; comprise one group of combined conductor; described combined conductor forms double line core by tin-coated copper wire (11) and winding glass fibre copper conductor (12); outsourcing internal shield (13) forms, combined conductor coated insulation layer (2), external shielding layer (3) and protective sleeve (4) successively outward.

2. track traffic 1500V according to claim 1 and following DC traction Multifunctional power cable, is characterized in that, described insulating barrier (2) bottom is provided with one group of wire (5).

3. track traffic 1500V according to claim 2 and following DC traction Multifunctional power cable, is characterized in that, the number of described wire (5) is not more than 6, and spacing between adjacent 2 wire (5) is less than 0.5cm.