CN205621507U - Scandium aluminum alloy conductor low voltage power cable that blocks water - Google Patents

Abstract

The utility model discloses a scandium aluminum alloy conductor low voltage power cable that blocks water, the sinle silk of cable contains three piece at least power core, the sinle silk sets gradually the area that blocks water outward and indulges covering, polyvinyl chloride inner sheath, galvanized steel strip armor and polyvinyl chloride oversheath around covering, aluminum plastic tape, power core comprises around package polyethylene insulation outward the power core conductor, the power core conductor adopt scandium aluminum alloy conductor for moving, sinle silk and block water the area and fill the packing that blocks water around the covering between. The utility model discloses the power core conductor adopts scandium aluminum alloy conductor, has solved in the past pure aluminium on the one hand and has existed a lot of not enoughly as cable conductor, has anti creep, high pliable and tough, strong extension, low bounce -back, connects advantages such as stable, that the block -water performance is good, and on the other hand has still reduced the cost 50% of cable.

Description

A kind of scandium-aluminum alloy conductor blocks water lv power cable

Technical field

This utility model relates to a kind of scandium-aluminum alloy conductor and blocks water lv power cable, belongs to electric wire field.

Background technology

Along with the development of China's industry, current China enters Electrification Age the most comprehensively, and power cable usage amount is also Increasing, the conductor main component manufacturing cable is copper, accounts for about the 70% of total copper consumption.But China's copper resource is the shortest, with The exhaustion of COPPER IN CHINA resource, COPPER IN CHINA 80% needs import, and dependency is big.Along with constantly riseing of copper valency, replace with aluminum Copper is the inexorable trend of electric wire development.The electric wire more than 80% of France is aluminium conductor, and the aluminum conductor of Japan also accounts for 50% Above.China's bauxite resource is the abundantest, but application amount is less than 1%, is the most also because the immature institute of aluminum conductor manufacturing technology Causing, therefore obtaining technical breakthrough is the key solving this problem.

Past aluminium conductor electric wire, owing to the mechanical performances such as the intensity of aluminum and elongation percentage can not meet requirement, the most again There is no resistance effect.So the most also do not have a kind of there is cheap excellent performance have again the 0.6/ of block-water performance 1kV power cable.

Utility model content

For overcoming above-mentioned deficiency, the purpose of this utility model is to provide a kind of scandium-aluminum alloy conductor to block water low-voltage power electricity Cable, for rated voltage 0.6/1kV power cable；Power wire core conductor uses scandium-aluminum alloy conductor, on the one hand solves over pure Aluminum is used as electric wire and cable conductor and exists a lot of not enough, has creep resistant, high extension pliable and tough, strong, low bounce-back, stable connection, blocks water The advantages such as performance is good, on the other hand also reduce the cost 50% of cable.

Scheme of the present utility model is as follows: a kind of scandium-aluminum alloy conductor blocks water lv power cable, the core of described cable Containing at least three power wire core；Set gradually waterstop lapping layer outside described core, aluminum plastic belt indulges covering, in polrvinyl chloride Sheath, galvanized steel strip armor and polrvinyl chloride oversheath；

Described power wire core is made up of the outer wrapped polyethylene layer of power wire core conductor；Described power wire core conductor For dynamic employing scandium-aluminum alloy conductor；

The packing that blocks water is filled between described core and waterstop lapping layer；

Described scandium-aluminum alloy conductor production method is as follows:

Aluminium ingot is added in shaft furnace, after 750-770 DEG C of fusing, flow into holding furnace, add ferrum, cerium-rich rare earth and scandium and carry out Melting；

To melt refine, purification, degasification after stirring, take off Slag treatment, the alloy melt of 750 DEG C will be not less than after refine Sending into aluminum bar continuous casting and tandem rolling unit and carry out strand and rolling, wherein strand temperature is 650 DEG C, obtains 300 DEG C, the scandium of Φ 10mm Content aluminium alloy rod；

It is incubated 3-5 hour with destressing in 280-290 DEG C in scandium content aluminium alloy rod is placed in heat-treatment furnace, the coldest But；

Wire drawing on aluminum alloy drawing machine subsequently, control lubrication temperature≤100 DEG C, through excessive draw and in draw, met ASTM B 800-05(2011) electric annealing and average tempering 8000 series alloys wire standard scandium content aluminium alloy single Line, then at 320-340 DEG C through the Ageing Treatment natural cooling of 6-8 hour, through the stranded height obtaining GB/T3956-2008 standard The scandium content aluminium alloy conductor of intensity high conductivity；

Described scandium-aluminum alloy conductor composition is configured to by mass percentage: scandium 0.4-0.8wt%, ferrum 0.01-0.1wt%, Cerium-rich rare earth 0.01-0.1wt%, surplus is aluminum.

Further, the core of described cable also includes a wire core, and described wire core is outer wrapped by wire core conductor Polyethylene layer is constituted.

Further, the core of described cable also includes a middle core, and described middle core is outer wrapped by center line core conductor Polyethylene layer is constituted.

Further, described polyethylene layer is composed of the following raw materials by weight:

Polyethylene 80-100 part, polypropylene 10-15 part, Triallyl isocyanurate 12-16 part, ethylene glycol bisthioglycolate shrink sweet Oil ether 5-10 part, ethyl acrylate 6-15 part, triethyl group silica-based triflate 3-8 part, TMPD 8-12 part, three Methyl hydroxyl amylalcohol isobutyrate 3-8 part, tetrasodium salt of EDTA 1-5 part, calcium oxide 3-5 part, aluminium oxide 3-5 part, hard Fat acid zinc 1-3 part.

This utility model beneficial effect:

1, this utility model cable, power wire core conductor uses scandium-aluminum alloy conductor, after tested its intensity 211MPa, conduction Rate 62.0%IACS, elongation percentage 31.8%, yield strength 110MPa.On the one hand the fine aluminium of solving over is deposited as electric wire and cable conductor A lot of not enough, there is the advantage such as creep resistant, high extension pliable and tough, strong, low bounce-back, stable connection, on the other hand also reduce electricity The cost 50% of cable.

2, this utility model uses the packing that blocks water to fill and waterstop is wrapped and vertical alclad moulds tape cable when meeting water Block water packing and waterstop expands the longitudinally water inlet of prevention cable immediately, and aluminum plastic belt stops cable radially water inlet.

3, this utility model uses polyethylene as conductor insulation, and polrvinyl chloride is the external sheath layer of outer protection.Use this Polyethylene layer fire-resistant waterproof obtained by utility model formula is effective.

4, this utility model is mainly used in the connection of low-voltage circuit and similar devices, and the cost of cable reduces 50%, electricity Electric conductivity and the block-water performance of cable are greatly improved.

Accompanying drawing explanation

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

Fig. 2 is the structural representation of this utility model embodiment 2.

Detailed description of the invention

Embodiment 1

A kind of scandium-aluminum alloy conductor blocks water lv power cable, and the core of cable contains three power wire core 1 and a ground Core 2；Power wire core is made up of the outer wrapped polyethylene layer of power wire core conductor；Power wire core conductor uses scandium aluminum to close for dynamic Gold conductor；Wire core is made up of the outer wrapped polyethylene layer of wire core conductor, and wire core conductor uses scandium-aluminum alloy to lead for dynamic Body；Set gradually waterstop lapping layer 4 outside core, aluminum plastic belt indulges covering 5, polyvinyl chloride inner sheath 6, galvanized steel strip armor 7 With polrvinyl chloride oversheath 8；The packing 3 that blocks water is filled between core and waterstop lapping layer.

Embodiment 2

The present embodiment is at the difference of embodiment 1: the core of cable contain three power wire core, a wire core and A piece middle core 9, middle core is made up of the outer wrapped polyethylene layer of center line core conductor, and center line core conductor uses scandium aluminum to close for dynamic Gold conductor；Other is the most consistent.

Embodiment 3

Scandium-aluminum alloy conductor production method is as follows:

Aluminium ingot is added in shaft furnace, after 750-770 DEG C of fusing, flow into holding furnace, add ferrum, cerium-rich rare earth and scandium and carry out Melting；To melt refine, purification, degasification after stirring, take off Slag treatment, the alloy melt being not less than 750 DEG C after refine is sent Entering aluminum bar continuous casting and tandem rolling unit and carry out strand and rolling, wherein strand temperature is 650 DEG C, obtains 300 DEG C, the scandium of Φ 10mm contains Amount aluminium alloy rod；It is incubated 3-5 hour with destressing in 280-290 DEG C in scandium content aluminium alloy rod is placed in heat-treatment furnace, from So cooling；Wire drawing on aluminum alloy drawing machine subsequently, control lubrication temperature≤100 DEG C, through excessive draw and in draw, met ASTM B 800-05(2011) electric annealing and average tempering 8000 series alloys wire standard scandium content aluminium alloy single Line, then at 320-340 DEG C through the Ageing Treatment natural cooling of 6-8 hour, meets GB/T3956-2008 standard through stranded obtaining The scandium content aluminium alloy conductor of high-strength high-conductivity；Above-mentioned scandium-aluminum alloy conductor composition is configured to by mass percentage: Scandium 0.6wt%, ferrum 0.07wt%, cerium-rich rare earth 0.04wt%, surplus is aluminum.

Its tensile strength 211MPa after tested, elongation percentage 31.8%, yield limit is 100 ~ 116MPa, conductivity 62.0% IACS。

Embodiment 4

Polyethylene layer is composed of the following raw materials by weight:

Polyethylene 90 parts, polypropylene 12 parts, Triallyl isocyanurate 14 parts, Ethylene glycol diglycidyl ether 8 parts, third Olefin(e) acid ethyl ester 10 parts, the silica-based triflate of triethyl group 5 parts, TMPD 10 parts, trimethyl hydroxyl amylalcohol isobutyrate 4 Part, tetrasodium salt of EDTA 3 parts, calcium oxide 3 parts, aluminium oxide 3 parts, zinc stearate 2 parts.

By each raw material blending, addition double screw extruder is mixing, pelletize, controls temperature 150 DEG C, obtains finished product.

Embodiment 5

Polyethylene layer is composed of the following raw materials by weight:

Polyethylene 88 parts, polypropylene 11 parts, Triallyl isocyanurate 13 parts, Ethylene glycol diglycidyl ether 8 parts, third Olefin(e) acid ethyl ester 15 parts, the silica-based triflate of triethyl group 6 parts, TMPD 8 parts, trimethyl hydroxyl amylalcohol isobutyrate 3 Part, tetrasodium salt of EDTA 2 parts, calcium oxide 4 parts, aluminium oxide 4 parts, zinc stearate 3 parts.

By each raw material blending, addition double screw extruder is mixing, pelletize, controls temperature 160 DEG C, obtains finished product.

Embodiment 6

Polyethylene layer is composed of the following raw materials by weight:

Polyethylene 8100 parts, polypropylene 13 parts, Triallyl isocyanurate 12 parts, Ethylene glycol diglycidyl ether 10 Part, ethyl acrylate 7 parts, the silica-based triflate of triethyl group 5 parts, TMPD 10 parts, trimethyl hydroxyl amylalcohol isobutyl Acid esters 7 parts, tetrasodium salt of EDTA 3 parts, calcium oxide 4 parts, aluminium oxide 4 parts, zinc stearate 2 parts.

By each raw material blending, addition double screw extruder is mixing, pelletize, controls temperature 170 DEG C, obtains finished product.

Embodiment 1 is implemented the polyethylene layer of above-described embodiment 4-6 respectively, and result combustion testing result all meets GB/T12666.1-2008。

Although above detailed description of the invention of the present utility model to be given detailed description and explanation, but it should be noted that It is that we can carry out various equivalence according to conception of the present utility model to above-mentioned embodiment and change and amendment, and it is produced Function still without departing from description contained spiritual time, all should be within protection domain of the present utility model.

Claims (3)

1. a scandium-aluminum alloy conductor blocks water lv power cable, it is characterised in that the core of described cable contains at least three Power wire core；Set gradually waterstop lapping layer outside described core, aluminum plastic belt indulges covering, polyvinyl chloride inner sheath, galvanized steel Band armor and polrvinyl chloride oversheath；

Described power wire core is made up of the outer wrapped polyethylene layer of power wire core conductor；Described power wire core conductor is Use scandium-aluminum alloy conductor；

The packing that blocks water is filled between described core and waterstop lapping layer.

A kind of scandium-aluminum alloy conductor the most according to claim 1 blocks water lv power cable, it is characterised in that described cable Core also include a wire core, described wire core is made up of the outer wrapped polyethylene layer of wire core conductor.

A kind of scandium-aluminum alloy conductor the most according to claim 2 blocks water lv power cable, it is characterised in that described cable Core also include a middle core, described middle core is made up of the outer wrapped polyethylene layer of center line core conductor.