CN203596212U

CN203596212U - Signal cable

Info

Publication number: CN203596212U
Application number: CN201320557392.2U
Authority: CN
Inventors: 沈小平; 周江; 骆素琼
Original assignee: Jiangsu Tongding Optic Electronic Stock Co Ltd
Current assignee: Jiangsu Tongding Optic Electronic Stock Co Ltd
Priority date: 2013-09-10
Filing date: 2013-09-10
Publication date: 2014-05-14
Anticipated expiration: 2023-09-10

Abstract

The utility model relates to a signal cable, and the cable comprises a cable core and an outer sheath wrapping the cable core. The exterior of the cable core is provided with a nonhygroscopic insulating layer which is longitudinally wrapped by a comprehensive protection layer. The exterior of the comprehensive protection layer is provided with a welded pipe aluminum sheath. The exterior of the welded pipe aluminum sheath is provided with a polyethylene bonding layer. A double-steel-tape armor layer is disposed between the polyethylene bonding layer and the outer sheath. The interior of the cable core is provided with a plurality of twines or quads, wherein each twine is formed by the twisting of two insulating single lines with different colors, and each quad is formed by the twisting of four insulating single lines with different colors. Each insulating single line consists of a copper conductor, an inner insulating layer wrapping the copper conductor, a cooper-wire braided-shielding layer wrapping the inner insulating layer, and an outer insulating layer wrapping the cooper-wire braided-shielding layer.

Description

Signal cable

Technical field

The utility model relates to a kind of cable, particularly a kind of signal cable of new structure.

Background technology

In prior art, the mode of cable shield mainly contains three kinds, and a kind of is that all quads in cable core are carried out individually shielded; One is at cable core vertical bag or wrapped aluminium-plastic tape outward; Another kind is welded tube aluminium sheath outside cable core.Nowadays,, along with the again and again speed-raising of Line for Passenger Transportation and existing railway, the cross-talk to cable and the performance requirement such as anti-interference are more strict.These three kinds of shielding modes of the prior art, though can reach certain anti-cross-talk and antijamming capability, cable core center line pair and line pair, the cross-talk problem between single line and single line still exists constantly.

In the serious place of some interference of electromagnetic field, existing shielding mode can not mask all interference sources completely, and in such situation, the coefficient of safety of train will be subject to great threat.Therefore, a kind of anti-cross-talk and antijamming capability is strong, shielding properties is superior signal cable will become what the trend requires.

Summary of the invention

The purpose of this utility model is exactly the deficiency in order to overcome existing signal cable technology and provide a kind of anti-cross-talk and antijamming capability is strong, shielding properties is superior signal cable.

For achieving the above object, the utility model solves the scheme that its technical problem takes and is:

Sort signal cable, comprise cable core and be coated on the oversheath outside cable core, described cable core is outside equipped with non-hygroscopic insulating barrier, described non-hygroscopic insulating barrier is the vertical integrated sheath that is surrounded by outward, described integrated sheath is outside equipped with welded tube aluminium sheath, described welded tube aluminium sheath is outside equipped with polyethylene bonding sheath, between described polyethylene bonding sheath and oversheath, is provided with double-tape armor layer.

Further, in described cable core, be provided with several to line group or quad, described to line group stranded the forming of insulated single wire by two different colours, described quad is by stranded the forming of insulated single wire of four different colours.Described insulated single wire is made up of copper conductor, the inner insulating layer that is coated on copper conductor periphery, the external insulation layer that is coated on the copper wire woven screen outside inner insulating layer and is coated on copper wire woven screen periphery.

Further, described copper wire woven screen braiding tightness is not less than 85%, and braided wires diameter is not less than 0.1 mm.

Further, described inner insulating layer and external insulation layer are polyolefin insulation layer.

Further, by the vertical covering of soft copper band embossing and extrusion molding, pe sheath outside the vertical covering of embossing forms described integrated sheath.

Further, the vertical cladding thickness of described embossing is not less than 0.09 mm.

Compared with prior art, usefulness of the present utility model is: sort signal cable adopts copper wire woven screen to carry out individually shielded to insulated single wire, solved in prior art can only to line group screen cover and the line group center line that causes pair and line to the cross-talk problem between, single line and single line, and adopt the screen of copper wire woven shielding as insulated single wire, the light softness of cable, shielding properties is strong; Select polyolefine material to be used as insulated single wire insulating barrier, make cable there is excellent ageing-resistant performance and mechanical strength.In addition, select polyolefine material to be used as insulated single wire insulating barrier, can make insulating barrier and conductor be bonded together better, guarantee electric stability and the moisture resistance of insulation system.

accompanying drawing explanation:

Below in conjunction with accompanying drawing, the utility model is further illustrated.

Fig. 1 is the utility model signal cable structural representation.

In figure: 1, cable core; 2, insulated single wire; 3, copper conductor; 4, inner insulating layer; 5, copper wire woven screen; 6, external insulation layer; 7, non-hygroscopic insulating barrier; 8, integrated sheath; 9, aluminium sheath; 10, polyethylene bonding sheath; 11, double-tape armor layer; 12, oversheath.

Embodiment

Below in conjunction with the drawings and the specific embodiments, the utility model is described in detail:

A kind of signal cable shown in Fig. 1, comprise cable core 1 and be coated on the oversheath 12 outside cable core 1, described cable core 1 is outside equipped with non-hygroscopic insulating barrier 7, the outer vertical integrated sheath 8 that is surrounded by of described non-hygroscopic insulating barrier 7, described integrated sheath 8 is outside equipped with welded tube aluminium sheath 9, described welded tube aluminium sheath 9 is outside equipped with polyethylene bonding sheath 10, between described polyethylene bonding sheath 10 and oversheath 12, is provided with double-tape armor layer 11.

In described cable core 1, be provided with several to line group or quad, described to line group stranded the forming of insulated single wire 2 by two different colours, described quad is by stranded the forming of insulated single wire 2 of four different colours.Described insulated single wire 2 is made up of copper conductor 3, the inner insulating layer 4 that is coated on copper conductor 3 peripheries, the external insulation layer 6 that is coated on the copper wire woven screen 5 outside inner insulating layer 4 and is coated on copper wire woven screen 5 peripheries.

Described copper wire woven screen 5 weaves tightness and is not less than 85%, and braided wires diameter is not less than 0.1 mm.

Described inner insulating layer 4 and external insulation layer 6 are polyolefin insulation layer.

By the vertical covering of soft copper band embossing and extrusion molding, pe sheath outside the vertical covering of embossing forms described integrated sheath 8.

The vertical cladding thickness of described embossing is not less than 0.09 mm.

Sort signal cable adopts copper wire woven screen to carry out individually shielded to insulated single wire, solved in prior art can only to line group screen cover and the line group center line that causes pair and line to the cross-talk problem between, single line and single line, and adopt the screen of copper wire woven shielding as insulated single wire, the light softness of cable, shielding properties is strong; Select polyolefine material to be used as insulated single wire insulating barrier, make cable there is excellent ageing-resistant performance and mechanical strength.In addition, select polyolefine material to be used as insulated single wire insulating barrier, can make insulating barrier and conductor be bonded together better, guarantee electric stability and the moisture resistance of insulation system;

Cable core adopts the vertical bag of soft copper band embossing outward, and outside the vertical covering of embossing extrusion molding layer of polyethylene sheath, effectively improve cable toughness deficiency in alternating bending, laying installation process, the problem of screen easy fracture.After integrated sheath has been produced, then be welded one deck aluminium sheath, such structure, can improve the anti-external interference performance of cable greatly.Meanwhile, by protect outer polyethylene bonding sheath, double-tape armor layer, the outer protective polyethylene cover of arranging at aluminium, make cable there is superior shielding, heatproof, protection against the tide, resistance to compression, anti-animal tooth and the function such as sting, meet the requirement of high-speed railway to cable completely.

It is emphasized that: be only preferred embodiment of the present utility model above, not the utility model is done to any pro forma restriction, any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of technical solutions of the utility model.

Claims

1. a signal cable, it is characterized in that: comprise cable core (1) and be coated on the outer oversheath (12) of cable core (1), described cable core (1) is outside equipped with non-hygroscopic insulating barrier (7), the outer vertical integrated sheath (8) that is surrounded by of described non-hygroscopic insulating barrier (7), described integrated sheath (8) is outside equipped with welded tube aluminium sheath (9), described welded tube aluminium sheath (9) is outside equipped with polyethylene bonding sheath (10), between described polyethylene bonding sheath (10) and oversheath (12), is provided with double-tape armor layer (11).

2. signal cable according to claim 1, it is characterized in that: in described cable core (1), be provided with several to line group or quad, described to line group stranded the forming of insulated single wire (2) by two different colours, described quad is by stranded the forming of insulated single wire (2) of four different colours, and described insulated single wire (2) is made up of copper conductor (3), the inner insulating layer (4) that is coated on copper conductor (3) periphery, the external insulation layer (6) that is coated on the outer copper wire woven screen (5) of inner insulating layer (4) and is coated on copper wire woven screen (5) periphery.

3. signal cable according to claim 2, is characterized in that: described copper wire woven screen (5) braiding tightness is not less than 85%, and braided wires diameter is not less than 0.1 mm.

4. signal cable according to claim 2, is characterized in that: described inner insulating layer (4) and external insulation layer (6) are polyolefin insulation layer.

5. signal cable according to claim 1, is characterized in that: by the vertical covering of soft copper band embossing and extrusion molding, pe sheath outside the vertical covering of embossing forms described integrated sheath (8).

6. signal cable according to claim 5, is characterized in that: the vertical cladding thickness of described embossing is not less than 0.09 mm.