CN201174273Y

CN201174273Y - Compact soft conductor flame-retardant power cable

Info

Publication number: CN201174273Y
Application number: CNU2008201514727U
Authority: CN
Inventors: 张俊; 王勇诚; 徐守森
Original assignee: Shanghai Kuailu Wire & Cable Co Ltd
Current assignee: Shanghai Kuailu Wire & Cable Co Ltd
Priority date: 2008-07-31
Filing date: 2008-07-31
Publication date: 2008-12-31
Anticipated expiration: 2018-07-31

Abstract

The utility model discloses a compact flexible conductor antiflaming power cable, which comprises a cable conductor, an outer sheath coated on the outer surface of the cable conductor and an insulating layer positioned between the outer surface of the cable conductor and the inner surface of the outer sheath, wherein the cable conductor consists of a plurality of thin flexible round copper wires or braided wires which are intertwisted layer by layer in the same direction, and is wrapped inside the insulating layer. Compared with the prior art, the compact flexible conductor antiflaming power cable has the advantages that the cable is flexible and easy to bend, install and lay down, and has easily selected application place; withstand voltage level is increased, and accident rate caused by voltage overload is greatly reduced; self mechanical protection capability of product is increased, and accident rate caused by mechanical damage is reduced; and because self electromechanical protection capability of product is increased, an application system in which the cable exists has better normal running status.

Description

The fire-retardant power cable of compact flexible conductor

Technical field

The utility model relates to a kind of power cable, is specifically related to a kind ofly to be used to communicate by letter, the fire-retardant power cable of compact flexible conductor in field such as traffic, building, Aero-Space, exploration.

Background technology

The fire-retardant power cable of copper core polyvinyl chloride insulation sheath not only has good electrical insulation properties and heat resistance, and installs to lay and not limited by drop, so developed rapidly in recent years and use.Traditional power cable structure conductor is by stranded the forming of middle thick copper lines of few radical, again at conductor outer wrapping one deck insulating case.The shortcoming of this kind structural cable is that conductor is not flexible, so that whole cable is not flexible, brings difficulty thereby lay for the installation of cable, has limited the scope of application of cable; Cable has only one deck insulating sleeve again, and the withstand voltage level of cable is limited, under the damage power effect of external mechanical force, is easy to be damaged, and its self-protection ability is relatively poor, and the fire resistance of cable itself is also strong inadequately.

Summary of the invention

The purpose of this utility model is in order to overcome the deficiencies in the prior art, and the fire-retardant power cable of compact flexible conductor that provides a kind of softness, flexible, easy installation to lay, its compact conformation, material economize, fire-retardant and withstand voltage properties is good.

The technical scheme that realizes above-mentioned purpose is: the fire-retardant power cable of a kind of compact flexible conductor, and comprise cable conductor, be wrapped in the oversheath of cable conductor outer surface, also comprise a insulating barrier between cable conductor outer surface and oversheath inner surface; Described cable conductor is made of in successively stranded in the same way mode some circular copper wires, and it is wrapped in the insulating barrier.

The above-mentioned fire-retardant power cable of compact flexible conductor, wherein, described every strand is by stranded the forming of several soft circular copper wires.

The above-mentioned fire-retardant power cable of compact flexible conductor, wherein, the material of described insulating barrier and oversheath is high flame retardant polyvinyl chloride.

The fire-retardant power cable of compact flexible conductor of the present utility model is compared with the power cable of prior art and is had the following advantages:

1. cable softness, flexible, easy installation are laid, and the field of employment is easily selected;

2. withstand voltage level improves, and the accident rate that causes owing to voltage overload significantly reduces;

3. product self mechanical protection ability is strong, can reduce because the rate of breakdown of mechanical damage;

4. because the self-dynamo-electric protective capacities of product improves, cause the normal operation conditions of the residing application system of cable better.

Description of drawings

Fig. 1 is the sectional view of the fire-retardant power cable of compact flexible conductor of the present utility model.

Embodiment

In order to understand the technical solution of the utility model better, below by embodiment particularly and be described in detail in conjunction with the accompanying drawings:

See also Fig. 1, the fire-retardant power cable of compact flexible conductor of the present utility model comprises cable conductor 1, insulating barrier 2 and oversheath 3, wherein,

The material of insulating barrier 2 is a high flame retardant polyvinyl chloride, and it is between cable conductor 1 outer surface and oversheath 3 inner surfaces;

Cable conductor 1 is wrapped in the insulating barrier 2, and it is made of in the stranded mode of both forward and reverse directions successively many soft circular copper wires or some strands, and every strand is respectively by stranded the forming of several soft circular copper wires;

When the sectional area of cable hour, cable conductor 1 can directly adopt many soft circular copper wires to carry out successively the stranded mode of both forward and reverse directions constitutes; When the sectional area of cable is big, can earlier several soft circular copper wires be twisted into a strand, and then some strands are constituted cable conductor 1 in the stranded mode of both forward and reverse directions successively, and cause the softness of cable conductor 1 to be extended, the pliability of sending a telegraph cable improves greatly;

The material of oversheath 3 is a high flame retardant polyvinyl chloride.

The fire-retardant power cable of compact flexible conductor of the present utility model becomes insulation, the double-deck system of sheath with the single insulating layer (individual layer system) of original cable, make the general flame retardant level of original cable mention the high flame retardant level, can improve cable proof voltage level and mechanical protection ability again.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Claims

1. fire-retardant power cable of compact flexible conductor comprises cable conductor, is wrapped in the oversheath of cable conductor outer surface, it is characterized in that,

Also comprise a insulating barrier between cable conductor outer surface and oversheath inner surface;

Described cable conductor is made of in successively stranded in the same way mode many soft circular copper wires or some strands, and it is wrapped in the insulating barrier.

2. the fire-retardant power cable of compact flexible conductor according to claim 1 is characterized in that, described every strand is by stranded the forming of several soft circular copper wires.

3. the fire-retardant power cable of compact flexible conductor according to claim 1 is characterized in that the material of described insulating barrier and oversheath is high flame retardant polyvinyl chloride.