CN201508721U

CN201508721U - Coal mine anti-flaming communication cable

Info

Publication number: CN201508721U
Application number: CN2009201863991U
Authority: CN
Inventors: 张本寿
Original assignee: ANHUI HANGTIAN CABLE GROUP Co Ltd
Current assignee: ANHUI HANGTIAN CABLE GROUP Co Ltd
Priority date: 2009-07-16
Filing date: 2009-07-16
Publication date: 2010-06-16
Anticipated expiration: 2019-07-16

Abstract

The utility model relates to a coal mine anti-flaming communication cable which is characterized in that: a conductor adopts a tin annealed copper wire, a silane crosslinking polyethylene insulating layer is sheathed on the conductor and is vulcanized to form an insulating wire core; every two or four insulating wires are twisted to form a twinning group or a four-star group, polyester bands are wound on the twinning group or the four-star group in an overlapping way, so as to form a unit twinning group or a unit four-star group, the unit twinning group or the unit four-star group and a filling rope are cabled to form a cable core, and an overlapping formation belt layer, a general shielding layer formed by overlapping an aluminum/plastic composite belt layer on a general shielding drainage line, an inner protective layer formed by sheathing PE, a zinc-coated wire braiding sheathing layer, and an outer protective layer formed by sheathing PVC/NBR composite elastomer material are sequentially arranged on the outer surface of the cable core from inward to outward; the coal mine anti-flaming communication cable has double functions of signal transmission and electrical energy transmission and has the advantages of electromagnetic interference resistance, anti-flaming, bending endurance, mechanical impact resistance and long service life.

Description

A kind of colliery flame-retardant communication cable

Technical field

The utility model relates to a kind of telecommunication cable, relates in particular to a kind of novel colliery flame-retardant communication cable, belongs to technical field of electric wires and cables.

Background technology

The coal mining industry, because the particularity of its environment, its electrical equipment all needs certain specific (special) requirements with cable.According to the abominable situation of coal mine environment, the cable that needs has performances such as anti-flammability, anti-extraneous mechanical impact force, resistance to wear, tension and softness.The colliery also needs to have requirements such as anti-electromagnetic interference with telecommunication cable.

Majority adopts polyethylene insulations on this class cable market at present, and its heat resistance is not high; Sheath adopts the PVC plastics, and anti-extraneous mechanical shock performance is not optimal.Therefore, existing product is carried out necessary improvement, make it to improve its performance, prolong product useful life, satisfy user's requirement.

Summary of the invention

The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of follow-on colliery flame-retardant communication cable being provided.

The utility model technical solution problem adopts following technical scheme:

The utility model colliery is that conductor adopts tin annealed copper wire with the design feature of flame-retardant communication cable, extrudes the organosilane crosslinked polyethylene insulating barrier and constitute insulated wire cores through sulfuration on conductor; Per two eradication edge cores are twisted into the pair twist group or per four eradication edge cores are twisted into the four stars group, the overlapping polyester belt that is surrounded with on described pair twist group or four stars group, constitute unit pair twist group or unit four stars group, described unit pair twist group or unit four stars group and gasket for packing stranding constitute cable core, set gradually the belting layer of wrapped formation from inside to outside at the outer surface of described cable core, total screen that wrapped plastic-aluminum combined belt constitutes on total shielding drainage thread, extrude the sheath that PE forms, zinc-coated wire braiding armour, extrude the external sheath layer that PVC/NBR composite elastic body material forms.

The utility model colliery also is with the design feature of flame-retardant communication cable:

Described conductor adopts 7 regular lay configuration.

Described pair twist group twisting pitch is 100-120; Described four stars group pitch is 130-150.

The PVC/NBR composite elastic body material oxygen index that described external sheath layer adopts is not less than 32.

Compared with the prior art, the utility model beneficial effect is embodied in:

1, insulating barrier has adopted excellent electrical properties, the higher silane crosslinked polyethylene of mechanical performance in the utility model, and material is easy to get, and is easy to process, and cost performance is the highest.Its normal phase working temperature reaches 90 ℃, and the product heat resistance is good;

2, total screen has adopted aluminium-plastic tape in the utility model, and it makes metal screen layer on the one hand, and it reaches into watertight composition with the PE inner restrictive coating on the other hand, prevents that insulated wire cores suction insulation resistance from descending;

3, the utility model cable jacket layer adopts PVC/NBR composite elastic body material, and it has higher wear-resisting, oil resistant, chemicals-resistant, weather-proof, anti-mechanical shock, anti-tear, high flame retardant, high strength, high resiliency, height and stretches rate, advantage such as processing easily;

4, conductor adopts 7 regular lay configuration of copper wire in the utility model, and conductive surface is smooth, and bending property is good, has improved the flexibility of cable.

Description of drawings

Fig. 1 is seven groups of pair of twisted cores structural representations for the utility model.

Fig. 2 is seven groups of star quad stranding cored structure schematic diagrames for the utility model.

Number in the figure: 1 conductor, 2 insulating barriers, 3A pair twist group, 3B four stars group, 4 polyester belts, 5A unit pair twist group, 5B unit four stars group, 6 gasket for packings, 7 belting layers, 8 drainage threads, 9 aluminium-plastic tapes, 10 interior family layers, 11 armours, 12 external sheath layers.

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

Embodiment

Referring to Fig. 1 and Fig. 2, it in the present embodiment seven groups of pair twists/star quad stranding telecommunication cable, conductor 1 adopts tin annealed copper wire, on conductor, extrude organosilane crosslinked polyethylene insulating barrier 2 and constitute insulated wire cores through sulfuration, per two thoroughly do away with the edge core is twisted into pair twist group 3A, or per four eradication edge cores are twisted into four stars group 3B, the overlapping polyester belt 4 that is surrounded with on pair twist group 3A or four stars group 3B, and constitute unit pair twist group 5A or unit four stars group 5B with this, with unit pair twist group 5A or unit four stars group 5B and gasket for packing 6 strandings formation cable core, set gradually the belting layer 7 of wrapped formation from inside to outside at the outer surface of cable core, total screen that wrapped plastic-aluminum combined belt 9 constitutes on total shielding drainage thread 8, extrude PE sheath 10, zinc-coated wire braiding armour 11, extrude the external sheath layer 12 that PVC/NBR composite elastic body material forms.

In concrete the enforcement, conductor adopts 7 regular conductor structures of tin annealed copper wire, and pair twist group 3A twisting pitch is 100-120; Four stars group 3B pitch is 130-150, and the PVC/NBR composite elastic body material oxygen index that restrictive coating 12 adopts is not less than 32.

Claims

1. a colliery flame-retardant communication cable is characterized in that conductor (1) adopts tin annealed copper wire, extrudes organosilane crosslinked polyethylene insulating barrier (2) and constitute insulated wire cores through sulfuration on described conductor (1); Per two eradication edge cores are twisted into pair twist group (3A) or per four eradication edge cores are twisted into four stars group (3B), go up the overlapping polyester belt (4) that is surrounded with in described pair twist group (3A) or four stars group (3B), constitute unit pair twist group (5A) or unit four stars group (5B), described unit pair twist group (5A) or unit four stars group (5B) constitute cable core with gasket for packing (6) stranding, set gradually the belting layer (7) of wrapped formation from inside to outside at the outer surface of described cable core, total shielding drainage thread (8) is gone up total screen that wrapped plastic-aluminum combined belt (9) constitutes, extrude the sheath (10) that PE forms, zinc-coated wire braiding armour (11), extrude the external sheath layer (12) that PVC/NBR composite elastic body material forms.

2. a kind of colliery according to claim 1 flame-retardant communication cable is characterized in that described conductor (1) adopts 7 regular lay configuration.

3. a kind of colliery according to claim 1 flame-retardant communication cable is characterized in that described pair twist group (3A) twisting pitch is 100-120; Described four stars group (3B) pitch is 130-150.

4. a kind of colliery according to claim 1 flame-retardant communication cable is characterized in that the PVC/NBR composite elastic body material oxygen index that described external sheath layer (12) adopts is not less than 32.