CN204946602U - A kind of CRH series motor train unit standard wall heavy insulation cable - Google Patents

Abstract

The utility model relates to an insulated cable with standard wall thickness for CRH series EMUs. The utility model belongs to the technical field of CRH series motor vehicle cables. A CRH series EMU standard wall thickness insulated cable is characterized in that the CRH series EMU standard wall thickness insulated cable is composed of an insulated wire core, a mixed braiding layer (1) and a sheath layer (2); the insulated wire core is made of stranded The insulating layer (4) is extruded from the outer side of the copper conductor (3), and there is a mixed braiding layer (1) on the outer side of the insulated wire core. is the sheath layer (2). The utility model has the advantages of being able to ensure the transmission of electric power, improve leakage protection, and at the same time ensure the flexibility of the cable, realize the protection of mechanical and electrical properties, ensure the safe operation of CRH series EMUs, and be suitable for use in complex places.

Description

A CRH series EMU standard wall thickness insulated cable

technical field

The utility model belongs to the technical field of CRH series train cables, in particular to a standard wall thickness insulated cable for CRH series train sets.

Background technique

At present, the common cables of the known CRH series EMUs generally use pure fiber or pure copper wire braiding for shielding. Pure fiber braiding is not conducive to power transmission, and pure copper wire braiding is poor in softness, so it is not suitable for use in places with complicated environments; The power transmission ability of the wire is poor, and the safety performance of the cable is poor, which cannot guarantee the safe operation of the railway passenger car. These shortcomings and technical problems limit the use of the product, and even cause hidden dangers in the safe operation of CRH series EMUs.

Contents of the invention

The utility model provides a standard wall-thickness insulated cable for CRH series EMUs in order to solve the technical problems in the known technology.

The purpose of this utility model is to provide a CRH series motor car with the characteristics of ensuring the transmission of electric power, improving leakage protection, ensuring the softness of cables, realizing mechanical and electrical performance protection, and ensuring the safe operation of CRH series EMUs. Group of standard wall thickness insulated cables.

This practical type is mainly used as a supporting wire and cable for CRH series motor vehicles. It is suitable for electrical equipment cables used in power distribution systems and control systems for various motor vehicles with a rated voltage of 3.6kv and below and urban rail vehicles. It is environmentally friendly and safe. , High flame retardant, high and low temperature resistance, low smoke and non-toxic, oil resistance, acid and alkali corrosion resistance, suitable for ambient temperature: -40°C-90°C, and still has good flexibility at low temperature.

The cable shielding of the utility model adopts a special structure. During the production process of the cable weaving, fibers are added to the ordinary copper wire braided shielding layer for mixed weaving, so as to protect the mechanical and electrical properties of the cable. After the structure of the utility model is improved, the cable combines the advantages of the above two braided shielding methods, which can not only ensure the transmission of electric power, improve the leakage protection, but also ensure the flexibility of the cable.

Features of the utility model CRH series EMU standard wall thickness insulated cable:

1. The conductor is a twisted tinned conductor; the diameter of the single wire is from 0.2 to 0.39mm, and it is composed of twisted wires.

2. Non-toxic polymer materials used for insulation and sheath.

3. After the insulation is cabled, fiber and copper wire are mixed and braided on the outer surface of the insulation, with the same number of spindles and opposite directions.

CRH series EMU standard wall thickness insulated cable rated voltage: 0.6/1kV, 1.8/3kV, 3.6/6kV.

The technical scheme adopted by the utility model CRH series EMU standard wall thickness insulated cable is:

A CRH series EMU standard wall thickness insulated cable, which is characterized in that: CRH series EMU standard wall thickness insulated cable is composed of an insulated core, a mixed braid layer and a sheath layer; the insulated core is extruded from the outside of the stranded copper conductor Composed of insulating layers, there is a mixed braiding layer on the outside of the insulated core, the mixed braiding layer is a mixed braiding structure of fiber and copper wire, and the outer side of the mixed braiding layer is a sheath layer.

The utility model CRH series EMU standard wall thickness insulated cable can also adopt the following technical scheme:

The CRH series EMU standard wall thickness insulated cable is characterized in that the number of fibers and copper wire ingots in the mixed braiding layer of the fiber and copper wire mixed braiding structure are the same, and the directions are opposite.

The CRH series EMU standard wall thickness insulated cable is characterized in that: the section of the CRH series EMU standard wall thickness insulated cable is 1.0-300mm ² ; the stranded copper conductor is a stranded tinned copper conductor, and the tinned copper conductor Monofilament diameter 0.2-0.39mm.

The advantages and positive effects that the utility model has are:

The CRH series EMU standard wall thickness insulated cable adopts the new technical scheme of the utility model. Compared with the existing technology, the utility model adopts the improved structure, and the cable combines the advantages of the two braided shielding methods of fiber and copper wire. It can not only ensure the transmission of power, improve the leakage protection, but also ensure the softness of the cable; it is suitable for the electrical devices of the power distribution system and control system of various motor vehicles and urban rail vehicles with a rated voltage of 3.6kv and below. cable. At the same time, it has the advantages of environmental protection and safety, high flame retardancy, high and low temperature resistance, low smoke and non-toxicity, oil resistance, acid and alkali corrosion resistance, suitable for ambient temperature: -40°C-90°C, and still has good flexibility at low temperatures.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of a standard wall thickness insulated cable of the CRH series EMU of the utility model.

In the figure, 1. Mixed braiding layer, 2. Sheath layer, 3. Conductor, 4. Insulation layer.

detailed description

In order to further understand the utility model content, characteristics and effects of the present utility model, the following examples are given hereby, and detailed descriptions are as follows in conjunction with the accompanying drawings:

Refer to accompanying drawing 1.

Example 1

A CRH series EMU standard wall thickness insulated cable, which is composed of an insulated wire core, a mixed braid layer 1 and a sheath layer 2; The mixed braided layer 1 is the mixed braided layer 1, and the outer side of the mixed braided layer 1 is the sheath layer 2. In the hybrid braiding layer 1 of the fiber and copper wire mixed braiding structure, the number of fibers and copper wire ingots is the same, and the directions are opposite.

The standard wall thickness insulated cable section of CRH series EMU is 50mm ² ; the stranded copper conductor is a stranded tinned copper conductor, and the single wire diameter of the tinned copper conductor is 0.3mm.

In this embodiment, the rated voltage of the standard wall thickness insulated cable of the CRH series EMU is 0.6/1kV.

The specific implementation process and characteristics of this embodiment:

1. The conductor is a twisted tinned conductor; the diameter of the single wire is from 0.2 to 0.39mm, and it is composed of twisted wires.

2. Non-toxic polymer materials used for insulation and sheath.

3. After the insulation is cabled, fiber and copper wire are mixed and braided on the outer surface of the insulation, with the same number of spindles and opposite directions.

Compared with the existing cables, the standard wall thickness insulated cables of CRH series EMUs in this embodiment have obvious characteristics: ordinary cables generally use pure fiber or pure copper wire braiding shielding, pure fiber braiding is not conducive to leakage protection and power transmission, pure copper The softness of silk weaving is poor, so it is not suitable for use in places with complicated environments. After the patent adopts the improved structure, the cable combines the advantages of the above two braided shielding methods, which can not only ensure the transmission of power, improve the leakage protection, but also ensure the softness of the cable.

Claims (3)

1. a CRH series motor train unit standard wall heavy insulation cable, is characterized in that: CRH series motor train unit standard wall heavy insulation cable is made up of insulated wire cores, mixed weaving layer (1) and restrictive coating (2); Insulated wire cores is extruded insulating barrier (4) by twisted copper conductors (3) outside and is formed, mixed weaving layer (1) is had outside insulated wire cores, mixed weaving layer (1) is fiber and copper wire mixed weaving structure, and mixed weaving layer (1) outside is restrictive coating (2).

2. CRH series motor train unit standard wall heavy insulation cable according to claim 1, is characterized in that: fiber is identical with copper wire number of spindles with fiber in the mixed weaving layer (1) of copper wire mixed weaving structure, and direction is contrary.

3. CRH series motor train unit standard wall heavy insulation cable according to claim 1 and 2, is characterized in that: the CRH series motor train unit standard wall heavy insulation cross-section of cable is 1.0-300mm ²; Twisted copper conductors is stranded tinned copper conductor, tinned copper conductor filament diameter 0.2-0.39mm.