CN104103357A

CN104103357A - Cold- and high temperature-resistant power cable

Info

Publication number: CN104103357A
Application number: CN201410292293.5A
Authority: CN
Inventors: 李小康; 陶天宝; 王敏; 方刚; 李业胜; 李业梅; 李强
Original assignee: Anhui Huatong Cable Group Co Ltd
Current assignee: Anhui Huatong Cable Group Co Ltd
Priority date: 2014-06-26
Filing date: 2014-06-26
Publication date: 2014-10-15

Abstract

The invention discloses a cold- and high temperature-resistant power cable which mainly comprises three groups of cable cores, an outer cladding layer wrapping the three groups of cable cores and 21 copper conductors extruded in the outer cladding layer, wherein aluminum alloy conductors are arranged at the centers of the cable cores, a nickel-strap armor layer, an aluminum-strap armor layer and a low smoke zero halogen polyolefin jacket layer sequentially wraps each aluminum alloy conductor, four nickel conductors are extruded between the nickel-strap armor layer and the aluminum-strap armor layer, four tinned copper conductors are extruded between the aluminum-strap armor layer and the low smoke zero halogen polyolefin jacket layer, the outer cladding layer are sequentially a silicon rubber insulation layer, an aluminum-strap shielding layer, an ethylene propylene rubber insulation layer and a nickel-strap armor polyolefin jacket layer from inside to outside, and the 21 copper conductors are uniformly extruded at an junction between the silicon rubber insulation layer and the aluminum-strap shielding layer in three groups. The cold- and high temperature-resistant power cable has the advantages of good heat resistance, aging resistance, high oxidation resistance and excellent electrical insulation performance, and can be normally installed and run in an environment of -50 DEG C to 300 DEG C.

Description

A kind of cold resistance high-temperature-resistant power cable

Technical field

The invention belongs to field of cables, relate in particular to a kind of cold resistance high-temperature-resistant power cable.

Background technology

The industrial and mining enterprises of China's the northern province of, winter, more than when daytime equipment operation work, ambient temperature can reach Baidu, equipment in night rear cable out of service is by the cold environment in subzero tens degree of temperature, in this special environment, need the one can be high temperature resistant, cable that again can be cold-resistant, to ensure the normal operation of equipment under north of china in winter adverse circumstances.

Summary of the invention

In order to overcome the defect of above-mentioned prior art, the invention provides a kind of cold resistance high-temperature-resistant power cable.

The present invention takes following technical scheme to realize: a kind of cold resistance high-temperature-resistant power cable, it mainly comprises three groups of cable cores, be wrapped in three groups of surrounding layers outside cable core and be extruded in 21 copper conductors of surrounding layer inside, described cable core center is set to aluminium alloy conductor, aluminium alloy conductor wraps up one deck nickel strap armour outward successively, one deck aluminium strip armour and one deck low-smoke halogen-free polyolefin restrictive coating, between described nickel strap armour and aluminium strip armour, be extruded with four nickel conductors, between described aluminium strip armour and low-smoke halogen-free polyolefin restrictive coating, extrude four tinned copper conductors, described surrounding layer is followed successively by silicone rubber insulation layer from inside to outside, aluminium strip screen, ethylene propylene rubber insulated layer and nickel strap armouring pe sheath layer, 21 copper conductors are divided into three groups and are evenly extruded in intersection between silicone rubber insulation layer and aluminium strip screen.

The present invention has following beneficial effect in sum: the resistance to heat resistance of freezing of the present invention is good, ageing-resistant, can in-50～300 DEG C of environment, normal mounting move, and non-oxidizability is strong, has excellent electrical insulation properties.

Brief description of the drawings

Fig. 1 is cross-sectional structure schematic diagram of the present invention;

Wherein: 1, cable core; 11, aluminium alloy conductor; 12, nickel conductor; 13, tinned copper conductor; 14, nickel strap armour; 15, aluminium strip armour; 16, low-smoke halogen-free polyolefin restrictive coating; 2, silicone rubber insulation layer; 3, aluminium strip screen; 4, ethylene propylene rubber insulated layer; 5, nickel strap armouring pe sheath layer; 6, copper conductor.

Embodiment

As shown in Figure 1, a kind of cold resistance high-temperature-resistant power cable, it mainly comprises three groups of cable cores 1, be wrapped in three groups of surrounding layers outside cable core 1 and be extruded in 21 copper conductors 6 of surrounding layer inside, described cable core 1 center is set to aluminium alloy conductor 11, outer one deck nickel strap armour 14, one deck aluminium strip armour 15 and one deck low-smoke halogen-free polyolefin restrictive coating 16 of wrapping up successively of aluminium alloy conductor 11.

Between described nickel strap armour 14 and aluminium strip armour 15, be extruded with four nickel conductors 12.

Between described aluminium strip armour 15 and low-smoke halogen-free polyolefin restrictive coating 16, extrude four tinned copper conductors 13.

Described surrounding layer has four layers, is followed successively by from inside to outside silicone rubber insulation layer 2, aluminium strip screen 3, ethylene propylene rubber insulated layer 4 and nickel strap armouring pe sheath layer 5.

Embodiment: 21 copper conductors are divided into three groups and are evenly extruded in intersection between silicone rubber insulation layer 2 and aluminium strip screen 3.

Further, cable core 1 guiding center conductor is to make by aluminum-alloy wire is stranded, and aluminium alloy conductor 11 cross sections are less than 12 mm ², be greater than 10 mm ²; Four nickel conductors 12 are to make by nickel wire is stranded, and nickel conductor 12 cross sections are less than 10 mm ², be greater than 8 mm ²; Tinned copper conductor 13 is to make by tinned copper wire is stranded, and tinned copper conductor 13 cross sections are less than 8 mm ², be greater than 6 mm ²; Copper conductor 6 is to make by copper wire is stranded, and copper conductor 6 cross sections are less than 7 mm ², be greater than 5 mm ².

The above is the embodiment of the present invention, and the equivalence of doing according to structure, feature and principle described in the present patent application scope therefore all changes or modifies, and is included in patent claim of the present invention.

Claims

1. a cold resistance high-temperature-resistant power cable, it mainly comprises three groups of cable cores, be wrapped in three groups of surrounding layers outside cable core and be extruded in 21 copper conductors of surrounding layer inside, it is characterized in that: described cable core center is set to aluminium alloy conductor, aluminium alloy conductor wraps up one deck nickel strap armour outward successively, one deck aluminium strip armour and one deck low-smoke halogen-free polyolefin restrictive coating, between described nickel strap armour and aluminium strip armour, be extruded with four nickel conductors, between described aluminium strip armour and low-smoke halogen-free polyolefin restrictive coating, extrude four tinned copper conductors, described surrounding layer is followed successively by silicone rubber insulation layer from inside to outside, aluminium strip screen, ethylene propylene rubber insulated layer and nickel strap armouring pe sheath layer, 21 copper conductors are divided into three groups and are evenly extruded in intersection between silicone rubber insulation layer and aluminium strip screen.