CN104733118A - Rare earth aluminum alloy low-voltage interlock armoring power cable and preparing method thereof - Google Patents
Rare earth aluminum alloy low-voltage interlock armoring power cable and preparing method thereof Download PDFInfo
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- CN104733118A CN104733118A CN201410844822.8A CN201410844822A CN104733118A CN 104733118 A CN104733118 A CN 104733118A CN 201410844822 A CN201410844822 A CN 201410844822A CN 104733118 A CN104733118 A CN 104733118A
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Abstract
The invention discloses a rare earth aluminum alloy low-voltage interlock armoring power cable. The power cable sequentially comprises a cable core, an armoring layer and an outer sheath from inside to outside. The cable core comprises four wire cores distributed in a matrix mode. Each wire core comprises a center round aluminum alloy rod and a plurality of trapezoidal aluminum alloy rods surrounding the center, wherein the trapezoidal aluminum alloy rods are hinged to the center round aluminum alloy rod in a surrounding mode to form circular rings and form 2-4 layers of circular rings from the center round aluminum alloy rod to the outside. A cross-linking polyethylene insulating layer is arranged outside each wire core; aluminum alloy interlock armoring is adopted in the armoring layer, and an aluminum alloy belt is formed outside the cable core through the interlock armoring process; the outer sheath is made of a polyvinyl chloride material. By the adoption of the technology, in comparison with a copper core cable to be replaced, the weight is reduced by 1/2, the flexibility is improved by 25%, the rebound resilience is reduced by 40%, the bending property is improved by 40%, and the power cable has the advantages of being excellent in corrosion resistance and creep deformation resistance and small in magnetic eddy current loss.
Description
Technical field
The present invention relates to power cable field, particularly relate to a kind of rare earth aluminium alloy switch elements armoured power cable and preparation method thereof.
Background technology
According to estimates, during " 13 ", China's power industry electric grid investment reaches 5.8 trillion yuan, wherein plans electric grid investment about 2.85 trillion yuan.2011, the copper consumption of China's cable industry reached 5,140,000 tons, exceedes the U.S. and is sure to occupy the first, and the copper consumption of power cable accounts for 1/3 of the total copper consumption of cable industry.China's copper natural resources shortage, within 2011, Copper Ores import volume reaches 6,390,000 tons, importation dependence reaches 84.3%, therefore copper valency also soars all the way, 70,000 yuan/ton of 2013 are increased to from 2005 30,000 yuan/ton, the substitute of seeking copper is imperative, and world's wires and cables industry proposes the suggestion of " with aluminium for copper " after investigation.China's bauxite resource enriches, and have 22.7 hundred million tons, reserves ore, occupy the 7th, the world, within 2011, primary aluminum output reaches 1778.6 ten thousand tons, accounts for world's ratio and weighs 69.44%.
Since " State Council is about the decision accelerating cultivation and development strategy new industry " promulgated by the State Council [2010] No. 32 file distribution, development Rare Earth Functional Materials, novel alloy material become the crucial direction of China's cable industry new-product development.Rare earth element added the application technology as conductor wire core in aluminium alloy by ad hoc approach, solve the shortcoming of existing conventional aluminium core power cable electrical property, mechanical performance, switching performance and poor corrosion resistance, aluminium core power cable can be eliminated, replace Copper core power cable, be widely used in the electrical power transmission system in power distribution network and commercial plant.
Current lv power cable conductor wire core many employings copper/aluminium core circle presses structure, and activity coefficient is between 83%-90%, and core contacts oxidizable blackening with air, affects electrical property.When power cable layer in underground, pipeline, under water, vertical shaft medium occasion time, for protecting the destruction of external mechanical force, adopting the armour of the wrapped form of clad steel band gap, reducing the pliability of cable.
Summary of the invention
The object of the invention is to the problem overcoming prior art, there is provided and adopt rare earth aluminium alloy to be conductor, when contacting with air, form oxide layer, adopt aluminum alloy strip lock armo, bending property improves 40%, activity coefficient rare earth aluminium alloy switch elements armoured power cable reaching about 96% and preparation method thereof.
In order to realize foregoing invention object, the technical solution used in the present invention is:
A kind of rare earth aluminium alloy switch elements armoured power cable, this power cable comprises from inside to outside successively: cable core, armour and oversheath;
It is matrix arrangement that described cable core comprises four bunch cores, each bunch core comprises the circular Aluminum alloy pole material at center and the many trapezoidal Aluminum alloy pole material around center, many trapezoidal Aluminum alloy pole material form annulus by the stranded circular Aluminum alloy pole material around center, and outwards form layer 2-4 annulus by the circular Aluminum alloy pole material at center; Each bunch core is also provided with crosslinked polyetylene insulated layer outward;
Described armour is aluminium alloy lock armo, forms one deck aluminum alloy strip by lock armo technique outward at cable core;
Described oversheath adopts polyvinyl chloride material.
Wherein, four bunch cores of described cable core form stranding lapping layer outside by stranded and overlapping around-packing technology.
Wherein, described armour comprises the wrapped aluminum alloy strip in described stranding lapping layer outside, described aluminum alloy strip is provided with embossing, described embossing has two, and described two embossing all be arranged in parallel along the axis direction of described aluminum alloy strip, in described two embossing, one is outwardly fin, an other groove for caving inward.
Wherein, described oversheath adopts 90 DEG C of high flame retardant polyvinyl chloride protective cover material materials.
In order to realize foregoing invention object, the present invention adopts another technical scheme to be:
A preparation method for rare earth aluminium alloy switch elements armoured power cable, is characterized in that, comprise the following steps:
Prepared by pole stock:
Will containing following component of iron 0.3-0.8wt%, silicon 0.08wt%, copper 0.15-0.3wt%, magnesium 0.05%wt%, zinc 0.05wt%, the Aluminum alloy pole material of boron 0.001-0.04wt%, rare earth element 0.10-0.8wt% is by circular and trapezoidal die assembly mode is disposable is drawn into circular Aluminum alloy pole material and trapezoidal Aluminum alloy pole material, and annealing in process;
Prepared by cable core:
Many trapezoidal Aluminum alloy pole material form annulus by the stranded circular Aluminum alloy pole material around center, and outwards form layer 2-4 annulus by the circular Aluminum alloy pole material at center, whole bundle is made to form circular core, adjacent layer direction of lay is contrary, outermost layer is left-hand, outside stranded conductor, extrude the crosslinked polyetylene insulated layer of one deck, four bunch cores are that matrix arrangement forms cable core;
Armouring finished product:
Form one deck aluminum alloy strip by lock armo technique outward at cable core, use 90 DEG C of pvc sheathing compounds to extrude restrictive coating.
Wherein, in described cable core preparation, four bunch cores are formed cable core by the stranded lap wound bag insulating paper layer of laying equal stress on of dish winch.
Beneficial effect of the present invention is: employing rare earth aluminium alloy is conductor, when contacting with air, forms oxide layer, good corrosion resistance, and there is creep-resistant property, long term overloading and overheated time, stable performance, adopt aluminum alloy strip lock armo, bending property improves 40%, adopts ladder type stranded conductor, activity coefficient reaches about 96%, compare similar cable conductor reduced diameter about 3.6%, can material-saving nearly 5%, reduce engineering cable cost more than 40%.Use this technology and the copper core cable phase weight/power ratio intending substituting to reduce 1/2, flexility exceeds 25%, least minimizing 40%, and bending property improves 40%, and has corrosion-resistant, the creep resistant of excellence, characteristic that magnetic eddy current loss is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of rare earth aluminium alloy switch elements armoured power cable of the present invention;
Label declaration:
1: cable core; 11: circular Aluminum alloy pole material; 12: trapezoidal Aluminum alloy pole material;
2: armour;
3: stranding lapping layer;
4: oversheath;
5: crosslinked polyetylene insulated layer.
Embodiment
By describing technology contents of the present invention, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
See also Fig. 1, rare earth aluminium alloy switch elements armoured power cable of the present invention comprises cable core 1, armour 2, stranding lapping layer 3 and oversheath 4 as shown in the figure, it is matrix arrangement that described cable core 1 comprises four bunch cores, each bunch core comprises the circular Aluminum alloy pole material 11 at center and the many trapezoidal Aluminum alloy pole material 12 around center, many trapezoidal Aluminum alloy pole material 12 form annulus by the stranded circular Aluminum alloy pole material 11 around center, and outwards form layer 2-4 annulus by the circular Aluminum alloy pole material 11 at center; Each bunch core is also provided with crosslinked polyetylene insulated layer 5 outward; Stranding lapping layer 3 is that four bunch cores of described cable core 1 are formed outside by stranded and overlapping around-packing technology.Described armour 2 is aluminium alloy lock armo, forms one deck aluminum alloy strip by lock armo technique outward at cable core; Described oversheath 4 adopts polyvinyl chloride material.Employing rare earth aluminium alloy is conductor, when contacting with air, forms oxide layer, good corrosion resistance, and there is creep-resistant property, long term overloading and overheated time, stable performance, adopt aluminum alloy strip lock armo, bending property improves 40%, adopts trapezoidal stranded conductor, activity coefficient reaches about 96%, compare similar cable conductor reduced diameter about 3.6%, can material-saving nearly 5%, reduce engineering cable cost more than 40%.Use this technology and the copper core cable phase weight/power ratio intending substituting to reduce 1/2, flexility exceeds 25%, least minimizing 40%, and bending property improves 40%, and has corrosion-resistant, the creep resistant of excellence, characteristic that magnetic eddy current loss is little.
In the present embodiment, described armour comprises the wrapped aluminum alloy strip in described stranding lapping layer outside, described aluminum alloy strip is provided with embossing, described embossing has two, and described two embossing all be arranged in parallel along the axis direction of described aluminium strip, in described two embossing, one is outwardly fin, an other groove for caving inward.Article two, embossing makes the ballistic properties of armour lower, and pliability is higher.
When rare earth aluminium alloy switch elements armoured power cable of the present invention is specifically prepared, conductor adopts diameter 9.5mm rare earth aluminium alloy bar, wherein containing iron 0.3-0.8wt%, silicon 0.08wt%, copper 0.15-0.3wt%, magnesium 0.05%wt%, zinc 0.05wt%, boron 0.001-0.04wt%, rare earth element 0.10-0.8wt%.Aluminium alloy rod adopts non-sliding type aluminium-drawing machine to be drawn into the special-shaped molded line (adopting trapezoidal in the present embodiment) of different cross section by circular and the disposable pole stock by 9.5mm diameter of special-shaped mould compound mode, and molded line is carried out annealing in process, by frame type stranding machine, its molded line is twisted into round conductor again, adjacent layer direction of lay is contrary, and outermost layer is left-hand.One deck is extruded crosslinked polyetylene insulated outside stranded conductor, thoroughly do away with edge by four after, core forms stranding cable core by the material that the stranded lap wound bag one deck of laying equal stress on of dish winch is suitable, after stranding, core uses lock armo machine armouring one deck aluminum alloy strip, uses 90 ° of pvc sheathing compounds to extrude restrictive coating.
Will containing following component of iron 0.3-0.8wt%, silicon 0.08wt%, copper 0.15-0.3wt%, magnesium 0.05%wt%, zinc 0.05wt%, the Aluminum alloy pole material of boron 0.001-0.04wt%, rare earth element 0.10-0.8wt% is by circular and trapezoidal die assembly mode is disposable is drawn into circular Aluminum alloy pole material and trapezoidal Aluminum alloy pole material, and annealing in process;
Many trapezoidal Aluminum alloy pole material form annulus by the stranded circular Aluminum alloy pole material around center, and outwards form layer 2-4 annulus by the circular Aluminum alloy pole material at center, whole bundle is made to form circular core, adjacent layer direction of lay is contrary, outermost layer is left-hand, outside stranded conductor, extrude the crosslinked polyetylene insulated layer of one deck, four bunch cores are that matrix arrangement forms cable core; In described cable core preparation, four bunch cores are formed cable core by the stranded lap wound bag one deck insulating paper lapping layer of laying equal stress on of dish winch.
Form one deck aluminum alloy strip by lock armo technique outward at cable core, use 90 DEG C of pvc sheathing compounds to extrude restrictive coating, obtain product of the present invention.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. a rare earth aluminium alloy switch elements armoured power cable, is characterized in that, this power cable comprises from inside to outside successively: cable core, armour and oversheath;
It is matrix arrangement that described cable core comprises four bunch cores, each bunch core comprises the circular Aluminum alloy pole material at center and the many trapezoidal Aluminum alloy pole material around center, many trapezoidal Aluminum alloy pole material form annulus by the stranded circular Aluminum alloy pole material around center, and outwards form layer 2-4 annulus by the circular Aluminum alloy pole material at center; Each bunch core is also provided with crosslinked polyetylene insulated layer outward;
Described armour is aluminium alloy lock armo, forms one deck aluminum alloy strip by lock armo technique outward at cable core;
Described oversheath adopts polyvinyl chloride material.
2. rare earth aluminium alloy switch elements armoured power cable according to claim 1, is characterized in that, four bunch cores of described cable core form a stranding lapping layer outside by stranded and overlapping around-packing technology.
3. rare earth aluminium alloy switch elements armoured power cable according to claim 2, it is characterized in that, described armour comprises the wrapped aluminum alloy strip in described stranding lapping layer outside, described aluminum alloy strip is provided with embossing, described embossing has two, and described two embossing all be arranged in parallel along the axis direction of described aluminium strip, in described two embossing, article one, be outwardly fin, an other groove for caving inward.
4. rare earth aluminium alloy switch elements armoured power cable according to claim 1, is characterized in that, described oversheath adopts 90 DEG C of high flame retardant polyvinyl chloride protective cover material materials.
5. a preparation method for rare earth aluminium alloy switch elements armoured power cable, is characterized in that, comprises the following steps:
Prepared by pole stock:
Will containing following component of iron 0.3-0.8wt%, silicon 0.08wt%, copper 0.15-0.3wt%, magnesium 0.05%wt%, zinc 0.05wt%, the Aluminum alloy pole material of boron 0.001-0.04wt%, rare earth element 0.10-0.8wt% is by circular and trapezoidal die assembly mode is disposable is drawn into circular Aluminum alloy pole material and trapezoidal Aluminum alloy pole material, and annealing in process;
Prepared by cable core:
Many trapezoidal Aluminum alloy pole material form annulus by the stranded circular Aluminum alloy pole material around center, and outwards form layer 2-4 annulus by the circular Aluminum alloy pole material at center, whole bundle is made to form circular core, adjacent layer direction of lay is contrary, outermost layer is left-hand, outside stranded conductor, extrude the crosslinked polyetylene insulated layer of one deck, four bunch cores are that matrix arrangement forms cable core;
Armouring finished product:
Form one deck aluminum alloy strip by lock armo technique outward at cable core, use 90 DEG C of pvc sheathing compounds to extrude restrictive coating.
6. the preparation method of rare earth aluminium alloy switch elements armoured power cable according to claim 6, is characterized in that, in described cable core preparation, four bunch cores is formed cable core by the stranded lap wound bag insulating paper layer of laying equal stress on of dish winch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410844822.8A CN104733118A (en) | 2014-12-31 | 2014-12-31 | Rare earth aluminum alloy low-voltage interlock armoring power cable and preparing method thereof |
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| CN201410844822.8A CN104733118A (en) | 2014-12-31 | 2014-12-31 | Rare earth aluminum alloy low-voltage interlock armoring power cable and preparing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010272A (en) * | 2019-05-05 | 2019-07-12 | 安徽国电电缆集团有限公司 | The reinforced composite cable of intelligent industrial robot carbon fiber and its manufacturing process |
| CN113764117A (en) * | 2021-08-26 | 2021-12-07 | 贵州晟展峰新材料科技有限公司 | Nano rare earth aluminum alloy cable |
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| GB1387660A (en) * | 1971-12-15 | 1975-03-19 | Kabel Metallwerke Ghh | Electrical cable |
| CN102978458A (en) * | 2012-11-09 | 2013-03-20 | 安徽欣意电缆有限公司 | Al-Fe-Si-B-RE aluminum alloy, and preparation method and power cable thereof |
| CN203218019U (en) * | 2013-04-26 | 2013-09-25 | 江苏亨通电力电缆有限公司 | Special-shaped flame-retardant aluminum alloy low-voltage power cable |
| CN104157348A (en) * | 2014-09-05 | 2014-11-19 | 沈阳北阳电缆制造有限责任公司 | Armored chain lock on aluminum alloy cable |
| CN204288910U (en) * | 2014-12-31 | 2015-04-22 | 福建世纪电缆有限公司 | A kind of rare earth aluminium alloy switch elements armoured power cable |
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2014
- 2014-12-31 CN CN201410844822.8A patent/CN104733118A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1387660A (en) * | 1971-12-15 | 1975-03-19 | Kabel Metallwerke Ghh | Electrical cable |
| CN102978458A (en) * | 2012-11-09 | 2013-03-20 | 安徽欣意电缆有限公司 | Al-Fe-Si-B-RE aluminum alloy, and preparation method and power cable thereof |
| CN203218019U (en) * | 2013-04-26 | 2013-09-25 | 江苏亨通电力电缆有限公司 | Special-shaped flame-retardant aluminum alloy low-voltage power cable |
| CN104157348A (en) * | 2014-09-05 | 2014-11-19 | 沈阳北阳电缆制造有限责任公司 | Armored chain lock on aluminum alloy cable |
| CN204288910U (en) * | 2014-12-31 | 2015-04-22 | 福建世纪电缆有限公司 | A kind of rare earth aluminium alloy switch elements armoured power cable |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010272A (en) * | 2019-05-05 | 2019-07-12 | 安徽国电电缆集团有限公司 | The reinforced composite cable of intelligent industrial robot carbon fiber and its manufacturing process |
| CN113764117A (en) * | 2021-08-26 | 2021-12-07 | 贵州晟展峰新材料科技有限公司 | Nano rare earth aluminum alloy cable |
| CN113764117B (en) * | 2021-08-26 | 2023-05-16 | 贵州晟展峰新材料科技有限公司 | Nanometer rare earth aluminum alloy cable |
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Application publication date: 20150624 |
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