CN201707966U

CN201707966U - High-speed rail train control data cable

Info

Publication number: CN201707966U
Application number: CN2010201550735U
Authority: CN
Inventors: 胡光政; 朱静波; 周婷婷
Original assignee: ANHUI HUALING CABLE GROUP Co Ltd
Current assignee: ANHUI HUALING CABLE GROUP Co Ltd
Priority date: 2010-04-08
Filing date: 2010-04-08
Publication date: 2011-01-12
Anticipated expiration: 2020-04-08

Abstract

The utility model discloses a high-speed rail train control data cable, which is characterized in that a conductor adopts a single-strand soft copper wires and adopts three-layer co-extrusion to form a foaming polyethylene insulation layer so as to form insulated wire cores, each four insulated wire cores are stranded into a star quad structure so as to form a unit group, one or a plurality of unit group is stranded into a cable so as to form a cable core, and an overlap lapping polyester tape, a twisted drainage wire, a total shielding layer formed by copper strip embossing longitudinal covering, a heat insulation layer formed by extrusion PE plastics, a longitudinal covered or extruded aluminum protective layer, an extruded lining layer, an armor layer formed by double-layered steel strips and an extruded outer sheath layer are sequentially arranged on the cable core from inside to outside. The high-speed rail train control data cable has signal transmission and data transmission functions, and has the advantages of electromagnetic interference resistance, fire resistance, environmental protection, low attenuation, mechanical impact resistance, long service life and the like.

Description

High-speed track Train Control data cable

Technical field

The utility model relates to a kind of control and data cable, relates in particular to a kind of high-speed track Train Control data cable, belongs to technical field of electric wires and cables.

Background technology

Along with science and technology development, high-speed rail transportation and city underground rail traffic signal system have developed into moving block system based on digital track circuit from early stage fixed blocking, and digital track circuit is the basis that train is controlled ATC automatically.The ATC system of numeral track circuit compares with audio frequency track circuit, and digital track circuit has absolute advantage at the amount of information of reliability, transmission, the aspects such as flexibility of transmission information.

The data cable that this system needs has been born car ground transmission of Information task, its transmission frequency is car 35.4kHz over the ground, ground is to car 55.8kHz, examine void simultaneously to taking and be listed as the control transmission of Information for adopting digital coding formula audio frequency track circuit to carry out train interval from now on, therefore, such cable is also taken into account the function of track circuit transfer of data simultaneously.

But the cable in the prior art is difficult to satisfy the requirement of high-speed rail transportation.

Summary of the invention

The utility model is for avoiding above-mentioned existing in prior technology weak point, and a kind of high-speed track Train Control data cable with advantages such as anti-electromagnetic interference, fire-retardant, environmental protection, low decay, anti-mechanical shock and long-lives is provided.

The utility model technical solution problem adopts following technical scheme:

The design feature of the utility model high-speed track Train Control data cable is that conductor adopts solely strand annealed copper wire, adopts three-layer co-extruded formation polyethylene foamed insulating barrier to constitute insulated wire cores on conductor; Per four thoroughly do away with the edge core is twisted into star-quad construction formation unit group, constitute cable core by a unit group or a plurality of unit stranded stranding of group, on cable core, set gradually overlapping wrapped polyester belt, the vertical total screen that constitutes, the thermal insulation layer that extrudes the formation of PE plastics, vertical bag or the alibate that extrudes, the inner covering that extrudes formation, the armour of double-deck steel band formation and the external sheath layer that extrudes formation of wrapping of drainage thread, copper strips embossing that winding is placed from inside to outside.

It is the bare copper wire of 1.2mm that described conductor adopts diameter.

In described same unit group, four thoroughly do away with the exodermis that the edge cores are set to different colours, and the four star quad stranding pitches of thoroughly doing away with the edge cores are 120-140, the star quad stranding pitch difference of different units group in the same cable core.

Described total screen is formed by the vertical bag of 0.12mm-0.15mm copper strips embossing.

Described alibate is by the vertical bag of 1.2mm-1.8mm aluminium strip and weld that two overlapping limits constitute or aluminium extrudes and forms.

Described inner covering and external sheath layer adopt low cigarette, Halogen, flame-retardant thermoset elastomer material to extrude and form.

The utility model can satisfy multiple data quantity, low decay, anti-electromagnetic environment to be disturbed, and has the low-smoke non-halogen flame-retardant characteristic, the utility model compared with the prior art, beneficial effect is embodied in:

1, conductor employing bare copper wire diameter is the 1.2mm conductor in the utility model, and its electricity function index satisfies the requirement of cable signal transmission primaries parameter and quadratic parameter;

2, insulating barrier has adopted the polyethylene material of excellent electrical properties, mechanical performance excellence in the utility model, by adopting three-layer co-extruded method to extrude, be skin-bubble-Pi physical blowing technology, improved the electric property of insulating barrier greatly, reduced mutual capacitance, improve insulation resistance, reduced the signal attenuation degree; The insulating outer layer skin is red, green, white, blue, has made things convenient for installation, has laid, and is convenient to safeguard; The star quad stranding pitch is controlled at 120-140, has reduced line to attenuation constant and electromagnetic coupled, has improved the cable quality;

3, total screen employing is formed by the vertical bag of thicker copper strips embossing in the utility model, and shielding thickness increases on the one hand, has improved shield effectiveness, and the opposing party adopts embossing technology, has improved the flexibility of cable;

4, the utility model alibate adopts the vertical bag of aluminium strip and welds that two overlapping limits constitute or aluminium extrudes and forms, and can be used as the screen of cable on the one hand, has improved shield effectiveness, plays the mechanical protection effect to the cable insulation core on the other hand;

5, the utility model inner covering and external sheath layer adopt low cigarette, Halogen, flame-retardant thermoset elastomer material to extrude and form, they are except the characteristics with common low-smoke non-halogen flame-retardant material, also improve performances such as heat-resisting, the anti-solvent of cable jacket, anti-environmental aging, anti-cracking greatly, can satisfy the requirement of product adaptation complex environment.

Description of drawings

Fig. 1 is seven unit of the utility model group structural representation.

Number in the figure: 1 conductor, 2 insulated wire cores, 3 unit groups, 4 polyester belts, 5 drainage threads, 6 total screens, 7 thermal insulation layers, 8 alibates, 9 inner coverings, 10 armours, 11 external sheath layers.

Below in conjunction with drawings and Examples the utility model is further specified.

Embodiment

Referring to Fig. 1, conductor 1 adopts solely strand annealed copper wire, adopts three-layer co-extruded method to extrude skin-bubble-Pi physically foamed pe insulation layer on conductor 1 and constitutes insulated wire cores 2; Per four thoroughly do away with edge core 2 is twisted into star-quad construction formation unit group 3, constitute cable core by seven unit groups, 3 stranded strandings, on cable core, set gradually from inside to outside and overlappingly be surrounded with polyester belt 4, twine to place drainage thread 5, the vertical bag of copper strips embossing constitutes total screen 6, extrude the PE plastics forms thermal insulation layer 7, vertical bag or extrude alibate 8, extrude and form inner covering 9, double-deck steel band and constitute armour 10, extrude and form external sheath layer 11.

In concrete the enforcement, it is 1.2mm that conductor 1 adopts the bare copper wire diameter; The outer skin that in the same unit group four thoroughly done away with edge core 2 is set to redness, green, white and blue respectively; The star quad stranding pitch of seven unit groups is respectively 122,125,129,132,135,138,140mm; Total screen 6 is formed by the vertical bag of 0.12mm copper strips embossing; Alibate 8 is by the vertical bag of 1.5mm aluminium strip and weld that two overlapping limits constitute or aluminium extrudes and forms; Inner covering 9 and external sheath layer 11 adopt low cigarette, Halogen, flame-retardant thermoset elastomer material to extrude and form.

Claims

1. high-speed track Train Control data cable is characterized in that conductor (1) adopts solely strand annealed copper wire, goes up at described conductor (1) and adopts three-layer co-extruded formation polyethylene foamed insulating barrier to constitute insulated wire cores (2); Per four thoroughly do away with edge core (2) is twisted into star-quad construction formation unit group (3), constitute cable core by a unit group (3) or the stranded stranding of a plurality of unit groups (3), on cable core, set gradually overlapping wrapped polyester belt (4), the vertical total screen (6) that constitutes, the thermal insulation layer (7) that extrudes the formation of PE plastics, vertical bag or the alibate (8) that extrudes, the inner covering (9) that extrudes formation, the armour (10) of double-deck steel band formation and the external sheath layer (11) that extrudes formation of wrapping of drainage thread (5), copper strips embossing that winding is placed from inside to outside.

2. high-speed track Train Control data cable according to claim 1 is characterized in that it is the bare copper wire of 1.2mm that described conductor (1) adopts diameter.

3. high-speed track Train Control data cable according to claim 1, it is characterized in that four eradication edge cores (2) in described same unit group (3) are set to the exodermis of different colours, and the four star quad stranding pitches of thoroughly doing away with edge core (2) are 120-140mm, the star quad stranding pitch difference of different units group in the same cable core.

4. high-speed track Train Control data cable according to claim 1 is characterized in that described total screen (6) is formed by the vertical bag of 0.12mm-0.15mm copper strips embossing.

5. high-speed track Train Control data cable according to claim 1 is characterized in that described alibate (8) is by the vertical bag of 1.2mm-1.8mm aluminium strip and weld that two overlapping limits constitute or aluminium extrudes and forms.

6. high-speed track Train Control data cable according to claim 1 is characterized in that described inner covering (9) and external sheath layer (11) adopt low cigarette, Halogen, flame-retardant thermoset elastomer material to extrude and form.