CN202677864U

CN202677864U - Double metal ground wire used in railway system

Info

Publication number: CN202677864U
Application number: CN 201220313557
Authority: CN
Inventors: 王国权; 王嘉玮
Original assignee: Jiangsu Hengtong Wire and Cable Technology Co Ltd
Current assignee: Jiangsu Hengtong Wire and Cable Technology Co Ltd
Priority date: 2012-06-29
Filing date: 2012-06-29
Publication date: 2013-01-16
Anticipated expiration: 2022-06-29

Abstract

The utility model discloses a double metal ground wire used in a railway system. The ground wire comprises a copper-clad aluminum conductor located in the center. A surface of the copper-clad aluminum conductor is intertwisted with 6 copper-clad steel conductors so as to form a copper-clad steel layer. The 12 copper-clad aluminum conductors are intertwisted on an external surface of the copper-clad steel layer so as to form a copper-clad aluminum layer. The copper-clad aluminum conductor is formed by an aluminum core and a copper layer located on the outer surface of the aluminum core. The copper-clad steel conductor is formed by a steel core and the copper layer located on the outer surface of the steel core. A flame-retardant conductive polymeric material sheath layer wraps on the surface of the copper-clad aluminum layer. By using the double metal ground wire of the utility model, contact reliability is increased; harms generated by poor contact of the through ground wire are reduced, wherein the poor contact is caused by vibration of a railway track; an amount of rare metal is reduced; manufacturing cost and engineering cost of a product are reduced too; great economic and social benefits are possessed.

Description

Be applied to the bimetallic ground wire of the railway system

Technical field

The utility model relates to track traffic synthetic grounding system field, is specifically related to a kind of bimetallic ground wire that is applied to the railway system.

Background technology

Through ground wire is a kind of earth cable for railway signal system, is the protective earth of system mask, lightning protection, electric equipment etc.Through ground wire can make each working point electromotive force of large-scale Railway Electric system substantially be consistent, make the system equipment grounding safety reliable, eliminated because the current potential unsymmetrical current that the potential difference between the distinct device causes has been realized the effective reliable protection to personnel and equipment.

The conductor of existing Through ground wire is pure cu conductor; to adopt electrician's circular copper wire to make the stranded conductor of Through ground wire through drawing, annealing, after stranded; after extruding protective layer, the stranded conductor skin makes Through ground wire; the conductor of this Through ground wire is made by fine copper; copper content is more than 99.9%, and manufacturing cost is expensive.

Summary of the invention

The utility model purpose provides a kind of bimetallic ground wire that is applied to the railway system, this bimetallic ground wire has increased contact reliability, reduced to shake because of track the harm of the Through ground wire loose contact generation that causes, reduced again the consumption of rare metal, reduce manufacturing cost and the project cost of product, had considerable economic benefit and social benefit.

For achieving the above object, the technical solution adopted in the utility model is: a kind of bimetallic ground wire that is applied to the railway system, comprise: the copper clad aluminum conductor that is positioned at the center, this copper clad aluminum conductor surface is stranded to have 6 copper covered steel conductors to form the copper covered steel layer, and 12 copper clad aluminum conductors are stranded in described copper covered steel layer outer surface formation copper-clad aluminium lamination; Described copper clad aluminum conductor is comprised of aluminium core and the copper layer that is positioned at the aluminium core outer surface, and described copper covered steel conductor is comprised of steel core and the copper layer that is positioned at the steel core outer surface; One flame retardant sheath layer is coated on described copper-clad aluminium lamination surface.

It is as follows further to improve technical scheme in the technique scheme:

In the such scheme, described copper clad aluminum conductor and copper covered steel conductor diameter are Φ 0.50mm～Φ 5.0 mm; Wherein, copper layer thickness is 0.10mm～0.50mm.

Because technique scheme is used, the utility model compared with prior art has following advantages and effect:

The utility model is applied to the bimetallic ground wire of the railway system according to kelvin effect phenomenon and the principle of electric current, utilize copper covered steel and copper cover aluminum composite construction, have the advantageous feature such as good, the good electrical property of mechanical and physical performance, low cost of manufacture, adopt the single conductor of bimetallic material, through drawing, make after stranded the transmission conductor of Through ground wire, at stranded conductor outer surface extruding conductive plastics, develop bimetallic conductive plastic jacket Through ground wire again.Bimetallic conductive plastic jacket Through ground wire is when satisfying electric current transmission performance, both increased the mechanical strength of Through ground wire, increased contact reliability, reduced to shake because of track the harm of the Through ground wire loose contact generation that causes, reduced again simultaneously the consumption of rare metal, reduce manufacturing cost and the project cost of product, had considerable economic benefit and social benefit.

Description of drawings

Accompanying drawing 1 is applied to the bimetallic ground configurations schematic diagram of the railway system for the utility model.

In the above accompanying drawing: 1, copper clad aluminum conductor; 2, copper covered steel conductor; 3, copper covered steel layer; 4, copper-clad aluminium lamination; 5, aluminium core; 6, copper layer; 7, steel core; 8, flame-retardant conductive macromolecular material restrictive coating.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment: a kind of bimetallic ground wire that is applied to the railway system, comprise: the copper clad aluminum conductor 1 that is positioned at the center, this copper clad aluminum conductor 1 surface is stranded to have 3,12 copper clad aluminum conductor of 6 copper covered steel conductors, 2 formation copper covered steel layers 1 stranded in described copper covered steel layer 3 outer surface formation copper-clad aluminium lamination 4; Described copper clad aluminum conductor 1 is comprised of aluminium core 5 and the copper layer 6 that is positioned at aluminium core 5 outer surfaces, and described copper covered steel conductor 2 is comprised of steel core 7 and the copper layer 6 that is positioned at steel core 7 outer surfaces; One flame-retardant conductive macromolecular material restrictive coating 8 is coated on described copper-clad aluminium lamination 4 surfaces.

Above-mentioned copper clad aluminum conductor 1 and copper covered steel conductor 2 diameters are Φ 0.50mm～Φ 5.0 mm; Wherein, copper layer 6 thickness are 0.10mm～0.50mm.

Adopt the bimetallic ground wire that is applied to the railway system of above execution mode, utilize copper covered steel and copper cover aluminum composite construction, have the advantageous feature such as good, the good electrical property of mechanical and physical performance, low cost of manufacture, adopt the single conductor of bimetallic material, through drawing, make after stranded the transmission conductor of Through ground wire, extrude again the conductive plastics layer of special formulation at the stranded conductor outer surface, develop bimetallic conductive plastic jacket Through ground wire.Secondly, bimetallic conductive plastic jacket Through ground wire is when satisfying electric current transmission performance, both increased the mechanical strength of Through ground wire, increased contact reliability, reduced to shake because of track the harm of the Through ground wire loose contact generation that causes, reduce again simultaneously the consumption of rare metal, reduced manufacturing cost and the project cost of product, had considerable economic benefit and social benefit.

Above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with technique can understand content of the present utility model and according to this enforcement, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed within the protection range of the present utility model.

Claims

1. bimetallic ground wire that is applied to the railway system, it is characterized in that: comprising: the copper clad aluminum conductor (1) that is positioned at the center, this copper clad aluminum conductor (1) surface is stranded to have 6 copper covered steel conductors (2) to form copper covered steel layer (3), and 12 copper clad aluminum conductors (1) are stranded to form copper-clad aluminium lamination (4) in described copper covered steel layer (3) outer surface; Described copper clad aluminum conductor (1) is comprised of aluminium core (5) and the copper layer (6) that is positioned at aluminium core (5) outer surface, and described copper covered steel conductor (2) is comprised of steel core (7) and the copper layer (6) that is positioned at steel core (7) outer surface; One flame-retardant conductive macromolecular material restrictive coating (8) is coated on described copper-clad aluminium lamination (4) surface.

2. bimetallic ground wire according to claim 1, it is characterized in that: described copper clad aluminum conductor (1) and copper covered steel conductor (2) diameter are Φ 0.50mm～Φ 5.0 mm; Wherein, copper layer (6) thickness is 0.10mm～0.50mm.