CN205881489U - Self -supporting is aluminum alloy core cable for mine - Google Patents

Abstract

The utility model relates to a self -supporting is aluminum alloy core cable for mine, the cable comprises a conducto, the outside crowded package of conductor has the insulating layer, constitutes insulation core, and a plurality of insulation core array alignment, a plurality of insulation core's central point have put the enhancement core, strengthening core and insulation core and stranding for the cable core, the clearance of cable core crowds the package filling layer, and the fire -retardant covering that winds of package is being wound to the outside, and it has the outer jacket to crowd outward to wrap around the covering, insulation core comprises at the conductor external insulation layer conductor and the crowded package that the aluminum alloy monofilament strands, the molded lines that the conductor was formed by the transposition of trapezoidal high conductive aluminum alloy monofilament, the enhancement core constitute by round steel wire or seven steel strand wires that a diameter is 2~4mm, or outside steel wire, steel strand wires a crowded package one deck butyronitrile elastomer materials. The pull resistance is good, cable light in weight, bending property is good, creep resistance properties is excellent.

Description

A kind of self-bearing type mine aluminium alloy core cable

Technical field

This utility model relates to mine field of cable technology, especially a kind of self-bearing type mine aluminium alloy core cable.

Background technology

China is coal resources big countries, and coal industry is the basic industry of Chinese national economy.The generating energy of China 76% The industrial chemicals of source, the industrial fuel of 76% and power, the civilian commercial energy of 60% and 70% is all that coal provides.Therefore coal The development of charcoal industry still occupies important seat in the development of national economy.And the conveying of the exploitation in colliery and electric power be unable to do without coal Mine cable, mining power cable is the indispensable auxiliary products in colliery, and 8.7/10kV and following mining power cable Demand day by day rise.

Traditional coal mine cable is then with " copper " conductor.Owing to internal copper ore resources is substantially close to exhaustion, or open Adopting high cost, 80% copper loss amount dependence on import, copper valency is tended towards superiority the most in the world in addition, uses the cost of investment of copper cable more to come The highest, the most excessive to the resource consumption of copper material；So the aluminium alloy cable that use aboundresources, price are relatively low and safe and reliable, Comply with the domestic main trend built a resource-conserving society.

A lot of fire etc. are caused owing to aluminum steel cable in use exists a lot of problem, the especially oxidation of aluminum conductor joint. But along with the development of science and technology, the current resources situation of the most global lean copper richness aluminum, become again inevitable choice for copper with " aluminum ".State Before the research of external aluminum matter conductor and application aspect have been gone to, just took the lead in have developed AA8000 series electricity before nearly 40 years Work level aluminium alloy is as conductor material.

The specific alloy formula of aluminium alloy cable and Technology for Heating Processing, greatly reduce metal and be heated and under pressure " creep " is inclined to.The electrical connection that aluminum alloy cable conductor does is stable as the electrical connection made of copper conductor, and " aluminium alloy is led Body " creep resistance tend to " copper " material.Therefore aluminium alloy cable can substitute for copper cable use completely.

The service condition of external aluminium alloy cable: America & Canada aluminium alloy low-voltage cable market share nearly 50%, The most large-scale public building is using, such as: Atlanta Olympic Games Main Stadium, and Venetian hotel of Las Vegas, General conference and exhibition center, Toronto International Airport etc..Separately in other areas such as Mexican Li Fuma mansion in America, sky market Deng being also widely used.

Domestic market situation: the most a lot of domestic projects the most gradually have come to use aluminium alloy cable (such as: Prologis Tianjin Logistic Park, joy paddy park, Chengdu, blue light IBP airport general headquarters, Xi'an Datang Xi Shi, Fujian benz project, the Zhongyuan (Zhengzhou) common people Square etc.).

Therefore, it is also feasible that aluminium alloy cable is applied to colliery industry, and has the biggest development trend.

Traditional mine cable, is all to use copper material, cable weight, and distance vertical shaft lays, it is difficult to carrying；In complexity Laying under environment, during installation, drag cable difficulty is big.

Utility model content

The applicant is for the shortcoming in above-mentioned existing production technology, it is provided that a kind of self-bearing type mine aluminium alloy core electricity Cable, so that its pull resistance is good, cable weight light, good bending property, creep-resistant property are excellent, simultaneously can be in the mine of long length Use, have and there is low cost, energy-conservation, very convenient when laying so that the conveying of mine electric energy is further developed.

The technical scheme that this utility model is used is as follows:

A kind of self-bearing type mine aluminium alloy core cable, including conductor, the outside of described conductor is extruded with insulating barrier, constitutes Insulated wire cores, multiple insulated wire cores arrays arrange, and the centre bit of multiple insulated wire cores is equipped with strengthening core, described strengthening core and insulation Core is stranded for cable core, and the gap of cable core extrudes packed layer, outside at wrapped fire-retardant lapping layer, is extruded with outer protecting outside lapping layer Layer；Conductor that described insulated wire cores is synthesized by aluminium alloy single skein silk and be extruded in conductor external insulation layer and constitute；Described conductor by The molded line that trapezoidal high connductivity aluminium alloy single skein silk closes；Described strengthening core is by one a diameter of 2～the round steel wire of 4mm or seven Root steel strand wires form, or extrude one layer of butyronitrile elastomeric material outside steel wire, steel strand wires.

Its further technical scheme is:

Described packed layer uses mineral fire prevention oxygen barrier material to extrude；

Described insulating barrier uses 125 DEG C of cross-linking radiation polyolefine materials；

Described lapping layer uses 2 floor height inhibiting tapes to be not less than 15%, and to put up rate wrapped；

Described outer jacket use 125 DEG C of low smoke and zero halogen cross-linking radiation polyolefine materials or oxygen index (OI) be not less than 32 fire-retardant Pvc sheathing compound extrudes.

The beneficial effects of the utility model are as follows:

This utility model compact conformation, rationally, easy to make.

Aluminium alloy conductor function admirable, can preferably replace copper conductor, and solves that electrician's fine aluminium conductor is oxidizable, creep resistant The problems such as poor performance, and material cost is lower than copper, economic performance is excellent, and conductor cost can save 1～2 times.Hew out safety Aluminium alloy cable replaces copper cable for coal mining reliably.

Use 1 a diameter of 2～the round steel wire of 4mm or 7 steel strand wires, improve the pull resistance of cable, it is possible to resolve cable Because of the difficult problem cannot laid at mine middle and long distance from heavy sensation of the body.

Use mineral fire prevention oxygen barrier material to extrude filling, make cable have good flame-retardant performance, can be hindered by A class Combustion test.

With 125 DEG C of cross-linking radiation polyolefine materials, 125 DEG C of low smoke and zero halogen cross-linking radiation polyolefine materials or oxygen index (OI) not Flame-proof polyvinyl chloride protective cover material less than 32 extrudes, using 2 floor height inhibiting tapes to be not less than 15%, to put up rate wrapped, makes this cable have There are good thermostability and anti-flammability, not only increase the life-span of cable, moreover it is possible to operation safe and reliable in mine.

Accompanying drawing explanation

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

Wherein: 1, conductor；2, insulating barrier；3, strengthening core；4, packed layer；5, lapping layer；6, outer jacket.

Detailed description of the invention

Below in conjunction with the accompanying drawings, detailed description of the invention of the present utility model is described.

As it is shown in figure 1, the self-bearing type mine aluminium alloy core cable of the present embodiment, including conductor 1, the outside of conductor 1 is squeezed Being surrounded by insulating barrier 2, constitute insulated wire cores, multiple insulated wire cores arrays arrange, and the centre bit of multiple insulated wire cores is equipped with strengthening core 3, strengthening core 3 is stranded with insulated wire cores for cable core, and the gap of cable core extrudes packed layer 4, outside at wrapped fire-retardant lapping layer 5, around Outer jacket 6 it is extruded with outside covering 5；Conductor 1 that insulated wire cores is synthesized by aluminium alloy single skein silk and be extruded in conductor 1 external insulation layer 2 are constituted；The molded line that conductor 1 is closed by trapezoidal high connductivity aluminium alloy single skein silk；Strengthening core 3 by one a diameter of 2～4mm Round steel wire or seven steel strand wires compositions, or outside steel wire, steel strand wires, extrude one layer of butyronitrile elastomeric material.

Packed layer 4 uses mineral fire prevention oxygen barrier material to extrude.

Insulating barrier 2 uses 125 DEG C of cross-linking radiation polyolefine materials.

Lapping layer 5 uses 2 floor height inhibiting tapes to be not less than 15%, and to put up rate wrapped.

Outer jacket 6 uses 125 DEG C of low smoke and zero halogen cross-linking radiation polyolefine materials or oxygen index (OI) to be not less than the fire-retardant polychlorostyrene of 32 Ethylene protective cover material extrudes.

The effect book transmission of electricity of insulated wire cores；

The effect of strengthening core 3 is the pull resistance improving cable, makes cable can bear deadweight；

Cable core packed layer 4 is extruded by mineral fire prevention oxygen barrier material, makes cable have good anti-flammability；

Insulating barrier uses 125 DEG C of cross-linking radiation polyolefine materials and uses 125 DEG C of low smoke and zero halogen irradiation to hand over outer jacket 6 Connection polyolefine material or oxygen index (OI) are not less than the flame-proof polyvinyl chloride protective cover material of 32, improve the thermostability of cable, add electricity In the service life of cable, lapping layer 5 uses 2 floor height inhibiting tapes wrapped, enhances the anti-flammability of cable.This structure makes cable have Excellent heat-resisting, ageing-resistant, flame-retardant, tension.

Above description is to explanation of the present utility model, is not the restriction to utility model, and this utility model is limited Scope sees claim, within protection domain of the present utility model, can make any type of amendment.

Claims (5)

1. a self-bearing type mine aluminium alloy core cable, it is characterised in that: including conductor (1), the outside of described conductor (1) is squeezed Being surrounded by insulating barrier (2), constitute insulated wire cores, multiple insulated wire cores arrays arrange, and the centre bit of multiple insulated wire cores is equipped with reinforcement Core (3), described strengthening core (3) and insulated wire cores are stranded for cable core, and the gap of cable core extrudes packed layer (4), outside in wrapped resistance Combustion lapping layer (5), is extruded with outer jacket (6) outside lapping layer (5)；The conductor that described insulated wire cores is synthesized by aluminium alloy single skein silk (1) and be extruded in conductor (1) external insulation layer (2) constitute；Described conductor (1) is closed by trapezoidal high connductivity aluminium alloy single skein silk and forms Molded line；Described strengthening core (3) is made up of one a diameter of 2～the round steel wire of 4mm or seven steel strand wires, or at steel wire, steel One layer of butyronitrile elastomeric material is extruded outside twisted wire.

2. a kind of self-bearing type mine aluminium alloy core cable as claimed in claim 1, it is characterised in that: described packed layer (4) Mineral fire prevention oxygen barrier material is used to extrude.

3. a kind of self-bearing type mine aluminium alloy core cable as claimed in claim 1, it is characterised in that: described insulating barrier (2) Use 125 DEG C of cross-linking radiation polyolefine materials.

4. a kind of self-bearing type mine aluminium alloy core cable as claimed in claim 1, it is characterised in that: described lapping layer (5) Using 2 floor height inhibiting tapes to be not less than 15%, to put up rate wrapped.

5. a kind of self-bearing type mine aluminium alloy core cable as claimed in claim 1, it is characterised in that: described outer jacket (6) The flame-proof polyvinyl chloride protective cover material using 125 DEG C of low smoke and zero halogen cross-linking radiation polyolefine materials or oxygen index (OI) to be not less than 32 extrudes.