CN202549470U

CN202549470U - Halogen-free low-smoke flame-retardant power cable with rated voltage of 35 kV and below

Info

Publication number: CN202549470U
Application number: CN 201220129790
Authority: CN
Inventors: 叶明茂; 何帮飞
Original assignee: Anhui Huayuan Cable Group Co Ltd
Current assignee: Anhui Huayuan Cable Group Co Ltd
Priority date: 2012-03-30
Filing date: 2012-03-30
Publication date: 2012-11-21
Anticipated expiration: 2022-03-30

Abstract

The utility model discloses a halogen-free low-smoke flame-retardant power cable with rated voltage of 35 kV and below, wherein the halogen-free low-smoke flame-retardant power cable comprises a cable core; the cable core comprises three wire core conductors with round sections; the three wire core conductors are arranged triangularly; a conductor shielding layer, an insulating layer, an insulating shielding layer and a metal shielding layer are wrapped outside each wire core conductor from inside to outside in turn; the three wire core conductors are stranded; a belting layer, a liner layer, an armouring layer and a jacket layer are wrapped outside the three stranded wire core conductors from inside to outside in turn; a plurality of drainage wires are arranged at the inner sides of the metal shielding layer and the armouring layer; and filling materials are arranged at the clearance among the three wire core conductors and the clearance among the three wire core conductors and the belting layer. The halogen-free low-smoke flame-retardant power cable disclosed by the utility model has multi-protection and high safety; the drainage wires are arranged both in the metal shielding layer and the armouring layer; therefore, a full-shielding structure is formed; the continuity of the shielding layer is ensured; and the halogen-free low-smoke flame-retardant power cable is applied to crowded occasions with closed spaces.

Description

Rated voltage 35kV and following zero-halogen low-smoke flame-retardant electrical cable

Technical field

The utility model relates generally to field of cables, relates in particular to a kind of rated voltage 35kV and following zero-halogen low-smoke flame-retardant electrical cable.

Background technology

Power cable (power cable) is used to transmit and distribute the cable of electric energy.Be usually used in the underground electrical network in city, power station lead line, industrial and mining enterprises in-line power and cross river, the submarine transmission line in sea excessively.In power circuit, the shared proportion of cable increases just gradually.

Wires and cables industry is the second largest industry that China is only second to automobile industry, and product variety satisfies rate and domestic market occupation rate all above 90%.Worldwide, the Chinese electric wire gross output value has surpassed the U.S., becomes first in the world electric wire producing country.Be accompanied by Chinese wires and cables industry high speed development, creation of new enterprise quantity constantly rises, and industry overall technology level is largely increased.China's economic growth continuously and healthily; For cable products provides the huge market space, the temptation that Chinese market is strong makes the world all focus on Chinese market to sight; Reforming and opening up to the outside world short decades, the formed huge production capacity of Chinese cable manufacturing industry lets the world regard with special esteem.Along with the continuous expansion of industry sizes such as China Power industry, data communication industry, urban track traffic industry, coal mining, car industry and shipbuilding, also will increase rapidly the demand of electric wire, following electric wire already also has huge development potentiality.

Also have some special power cables to require than higher, except general high temperature resistant, fire-resistant, also require it safe, the personnel that are suitable for are intensive, the occasion of space sealing.

The utility model content

The utility model purpose is exactly in order to remedy the defective of prior art, the rated voltage 35kV and the following zero-halogen low-smoke flame-retardant electrical cable of the occasion that a kind of personnel of being suitable for are intensive, the space is sealed to be provided.

The utility model is realized through following technical scheme:

Rated voltage 35kV and following zero-halogen low-smoke flame-retardant electrical cable; Include cable core; It is characterized in that: described cable core includes three cross sections and is circular core conductor; Described three core conductors are isosceles triangle and arrange; The outside of every core conductor all is enclosed with conductor shield, insulating barrier, insulation screen, metal screen layer from inside to outside successively, and it is stranded that three core conductors carry out, and the outside of three core conductors after stranded is enclosed with belting layer, inner covering, armour, restrictive coating from the inside to surface successively; The inboard of described metal screen layer, armour is equipped with several drainage threads, the gap between three core conductors and and belting layer between the gap be equipped with filler.

Described insulating barrier adopts crosslinked polyethylene.

The utility model has the advantages that:

The utlity model has multiple protective, safe, be equipped with drainage thread in metal screen layer, the armour, formed the full-shield structure, guaranteed the continuity of screen, the personnel that are suitable for are intensive, the occasion of space sealing.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Embodiment

As shown in Figure 1; Rated voltage 35kV and following zero-halogen low-smoke flame-retardant electrical cable; Include cable core; Cable core includes three cross sections and arranges for circular 1, three core conductor 1 of core conductor is isosceles triangle, and the outside of every core conductor 1 all is enclosed with conductor shield 2, insulating barrier 3, insulation screen 4, metal screen layer 5 from inside to outside successively; Three core conductors 1 carry out stranded; The outside of three core conductors 1 after stranded is enclosed with belting layer 6, inner covering 7, armour 8, restrictive coating 9 from the inside to surface successively, the inboard of metal screen layer 5, armour 8 be equipped with between 10, three core conductors 1 of several drainage threads the gap and and belting layer 6 between the gap be equipped with filler 11.

Insulating barrier 3 adopts crosslinked polyethylene.

Claims

1. a rated voltage 35kV and following zero-halogen low-smoke flame-retardant electrical cable; Include cable core; It is characterized in that: described cable core includes three cross sections and is circular core conductor; Described three core conductors are isosceles triangle and arrange; The outside of every core conductor all is enclosed with conductor shield, insulating barrier, insulation screen, metal screen layer from inside to outside successively, and it is stranded that three core conductors carry out, and the outside of three core conductors after stranded is enclosed with belting layer, inner covering, armour, restrictive coating from the inside to surface successively; The inboard of described metal screen layer, armour is equipped with several drainage threads, the gap between three core conductors and and belting layer between the gap be equipped with filler.

2. rated voltage 35kV according to claim 1 and following zero-halogen low-smoke flame-retardant electrical cable is characterized in that: described insulating barrier adopts crosslinked polyethylene.