CN201392676Y

CN201392676Y - Thin insulating single-core cable for rolling stock

Info

Publication number: CN201392676Y
Application number: CN200920171614U
Authority: CN
Inventors: 马金龙; 汤永怀
Original assignee: ANHUI TIANLONG ELECTRIC CABLE GROUP Co Ltd
Current assignee: ANHUI TIANLONG ELECTRIC CABLE GROUP Co Ltd
Priority date: 2009-04-10
Filing date: 2009-04-10
Publication date: 2010-01-27
Anticipated expiration: 2019-04-10

Abstract

The utility model discloses a thin insulating single-core cable for rolling stock, which is characterized in that a tinned conductor formed of a plurality of tinned soft copper conductors by plying is adopted, the outer surface layer of the cable adopts an extruded insulating material layer formed of polyetherimide (PEI), and an isolating layer which is high temperature resistant thin non-woven fabric layer formed by winding or longitudinally wrapping is allowable to be arranged between the tinned conductor and the insulating material layer. The thin insulating single-core cable has the properties of oil resistance, heat resistance, aging resistance, flame retardance, bending resistance, thinness, insulation, flexibility, and so on; and can adapt to harsh and complex operating environment of rolling stock.

Description

Thin insulating type list core rolling stock cable

Technical field:

The utility model relates to the rolling stock cable, relates in particular to a kind of thin insulating type list core rolling stock cable, belongs to technical field of electric wires and cables.

Background technology:

At present, upgrading along with rail vehicles equipment technology performance, need the rolling stock cable to have the requirement of the locomotive of satisfying special performances, simultaneously, more economical, more reliable, lighter for integral device and system, for the electric wire of its usefulness, develop to small bore, thin insulating direction, to save more space and weight, improve the operational efficiency of equipment.The thin-walled cable that tradition adopts is to use the cross-linking radiation polyolefin cable, can not satisfy the demand for development of used for rolling stock cable owing to there is following problem.

1, crosslinked polyolefin is difficult to extrude very thin insulation in the course of processing; 2, the mechanical tensile strength properties of low smoke, zero halogen cross-linked polyolefin is lower; The electric property of 3 low smoke, zero halogen cross-linked polyolefins is poor, and easily suction, and chance water power decreased performance is obvious; 4, the low smoke, zero halogen cross-linked polyolefin is not easy by single insulated wire cores testing vertical flammability; 5, oil resistance is very poor, the difficult oil resistant requirement of satisfying rolling stock.

Summary of the invention:

The utility model is the weak point for avoiding above-mentioned prior art to deposit, a kind of thin insulating type list core rolling stock cable is provided, make it have characteristics such as oil resistant, heat-resisting, ageing-resistant, fire-retardant, anti-bending, thin insulating and softness, to satisfy the requirement of rolling stock bad working environment.

The utility model technical solution problem adopts following technical scheme:

Design feature of the present utility model is to adopt the tinned conductor that is twisted into by many tinned copper wires, the cable extexine is the insulation material layer that extrudes moulding with Polyetherimide (PEI), allow to be set to separator between tinned conductor and insulation material layer, described separator is the wrapped or vertical outer fire-resistant thin nonwoven layer of conductor that is wrapped in.

Described conductor adopts regular lay configuration, and the twisted wire pitch is between 10-12 times.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

1, the beneficial effects of the utility model are, structural design is simple, scientific and reasonable, manufacture easily, and cable insulation adopts Polyetherimide (PEI), has effectively improved the serviceability of product.Polyetherimide (PEI) is to be the repetition of unit with fragrant acid imide and aryl oxide, and its high strength at high temperature is that the acid imide unit by rigidity provides, and ehter bond provides the chain flexibility simultaneously, makes it that good melt processability and flowability be arranged.By to the analysis of Polyetherimide (PEI) material property, this material has following premium properties:

A) good electric property and mechanical performance satisfies the requirement of low-voltage cable fully;

B) good flame retardancy, oxygen index reaches 48, far above common fire proofing;

C) have good low smoke density, environmental-protecting performance satisfies the European Union environmental protection command request fully;

D) have chemical substances such as favorable chemical resistance energy, ability mineral oil, soda acid, ozone;

E) have resistance to elevated temperatures, the nominal operation temperature reaches 130 ℃～150 ℃.

2, the utility model is 3kV and following cable, is applicable to adverse circumstances such as the rail vehicles space is narrow and small, high temperature, greasy dirt;

3, the tinned copper wire lay configuration of conductor in the utility model has improved the bending property of cable greatly, and bending radius is littler, and cable is more soft, is adapted at that small space lays in the vehicle;

4, the thin insulating type is adopted in insulation in the utility model, and cable is in light weight.

Description of drawings:

Fig. 1 is the utility model list core pattern construction of cable schematic diagram.

Number in the figure: 1 conductor; 2 separators; 3 insulation material layers.

Below pass through embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.

Embodiment,

Non-limiting examples is as described below:

Embodiment: referring to Fig. 1, present embodiment adopts the tinned conductor 1 that is twisted into by many tinned copper wires, the cable extexine is the insulation material layer 3 that extrudes moulding with Polyetherimide (PEI), be set to separator 2 between tinned conductor 1 and insulation material layer 3, separator 2 is the wrapped or vertical outer fire-resistant thin nonwoven layer of conductor that is wrapped in.

In concrete the enforcement, conductor 1 is by regular stranded formation of the tinned copper wire of 77 0.20mm, and the twisted wire pitch is between 10-12 times; Tight wrapped or vertical bag nonwoven fabrics separator 2 on conductor 1.

Claims

1, thin insulating type list core rolling stock cable, it is characterized in that adopting the tinned conductor (1) that is twisted into by many tinned copper wires, the cable extexine is the insulation material layer (3) that extrudes moulding with Polyetherimide, be set to separator (2) between tinned conductor (1) and insulation material layer (3), described separator (2) is the wrapped or vertical outer fire-resistant thin nonwoven layer of conductor that is wrapped in.

2, thin insulating type list core rolling stock cable according to claim 1 is characterized in that described conductor adopts regular lay configuration, and the twisted wire pitch is between 10-12 times.