CN102867590A - High-compression-coefficient super-smooth corrosion-resistant aluminum alloy conductor medium-voltage cable - Google Patents
High-compression-coefficient super-smooth corrosion-resistant aluminum alloy conductor medium-voltage cable Download PDFInfo
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- CN102867590A CN102867590A CN201210364845XA CN201210364845A CN102867590A CN 102867590 A CN102867590 A CN 102867590A CN 201210364845X A CN201210364845X A CN 201210364845XA CN 201210364845 A CN201210364845 A CN 201210364845A CN 102867590 A CN102867590 A CN 102867590A
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Abstract
The invention discloses a high-compression-coefficient super-smooth corrosion-resistant aluminum alloy conductor medium-voltage cable which comprises a cable inner core and a cable outer layer lapped outside the cable inner core, and is characterized in that the cable inner core comprises a high-compression-coefficient super-smooth aluminum alloy conductor, a conductor shielding layer, an insulating layer, an insulation shielding layer and a metal shielding layer successively from inside to outside; and the cable outer layer comprises a lapping strip, a flexible metal tube and a protective sheath successively from inside to outside. According to the invention, the compression coefficient of the high-compression-coefficient super-smooth corrosion-resistant aluminum alloy conductor is up to over 95%, while the compression coefficient of an ordinary cable is only 88%-92%. Compared with a copper core cable, the cable provided by the invention has the advantages that on the basis of realizing equivalent electrical performance, the procurement cost can be reduced by 35%-40%, and the installation cost can be reduced by about 20%.
Description
Technical field
The present invention relates to a kind of power transmission cable, relate in particular to a kind of high coefficient ultra-smooth aluminium alloy conductor midium voltage cable that presses.
Background technology
At present, the midium voltage cable product adopts copper core cable and aluminium cable.
But there is following problem in copper core midium voltage cable:
1, from copper bauxite resource situation, the rich aluminium of global poor copper; Before the copper marked price up to 60,000 yuan/tons;
2, China has become in the world copper consumption the first rich and influential family, and the cable industry copper consumption accounts for 47% of total amount.
3, to press coefficient low for traditional copper, aluminium cable, has the gap between monofilament, and easily oxidation is loosening, increases conductor DC resistance, directly affects the cable electrical performance.
4, the copper core cable bending radius is 15 ~ 20 times of cable size, and bending radius is large, requires construction space large.
Although aluminium is cheap, present price is at 1.6 ten thousand yuan/tons, and aluminium cable makes it can't replace copper core cable for a long time owing to there is following problem always:
1, the aluminium core is easy to oxidation in air or under the condition of ph value 4.5 ~ 7.8, be heated and pressure under easily creep;
2, aluminium cable damages or broken string when alternating bending easily;
3, be heated and pressure under the aluminium cable creep-resistant property poor.After a period of time was installed, the junction was lax easily, and contact resistance increases, and is the hidden danger point of circuit reliability service;
Summary of the invention
The objective of the invention is to provide a kind of high coefficient ultra-smooth anticorrosion aluminium conductor midium voltage cable that presses, to solve the problems of existing copper aluminium cable.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of high coefficient ultra-smooth anticorrosion aluminium conductor midium voltage cable that presses comprises the cable inner core and wraps in the outer cable outer layer of cable inner core; It is characterized in that described cable inner core is followed successively by from inside to outside height and presses coefficient ultra-smooth aluminium alloy conductor, conductor shield, insulating barrier, insulation screen and metal screen layer; Described cable outer layer is followed successively by band, flexible metallic hose, sheath from inside to outside.
In a preferred embodiment of the invention, to press coefficient ultra-smooth aluminium alloy conductor be the stranded aluminium alloy conductor of ladder track to height.
In a preferred embodiment of the invention, to press coefficient ultra-smooth aluminium alloy conductor be that the height of annealed processing presses the coefficient aluminium alloy conductor to height.
In a preferred embodiment of the invention, the flexible metal pillar is aluminum alloy strip self-locking armouring.
There is not filler between cable inner core and the cable outer layer.
Beneficial effect of the present invention is:
What (1) height of the present invention pressed coefficient ultra-smooth aluminium alloy conductor presses coefficient up to more than 95%, and it only is 88%～92% that common cable presses coefficient.
(2) it is smooth especially that height of the present invention presses the surface of coefficient ultra-smooth aluminium alloy conductor, meets medium and high voltage cable fully to the specific (special) requirements of conductor.
(3) height of the present invention press coefficient ultra-smooth anticorrosion aluminium conductor midium voltage cable can be than the prolonged for another ten years in useful life of copper core cable.
(4) compare with copper core cable, the present invention can make purchase cost descend 35%～40% on the basis of realizing equal electric property, and installation cost can reduce about 20%.
(5) to press coefficient ultra-smooth aluminium alloy conductor be to add the elements such as rare earth, iron, magnesium, copper, silicon in fine aluminium to height of the present invention, melting become have high-elongation, creep-resistant property is good, electric conductivity is stable alloy material.
(6) the present invention has good bending property, and bending radius is little, and laying installation is convenient and take up room little.
(7) self-locking armouring of the present invention has good mechanical performance, can bear suitable external pressure, pulling force and collision, lay and need not poling, can directly imbed underground.
(8) the present invention have pest-resistantly sting, the effect of rat-biting proof.
(9) the present invention has good fire resistance.
(10) cable perfect heat-dissipating of the present invention.
Characteristics of the present invention can be consulted the detailed description of the graphic and following better execution mode of this case and be obtained to be well understood to.
Description of drawings
Fig. 1 is schematic diagram of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, further set forth the present invention below in conjunction with specific embodiment.
As shown in Figure 1, a kind of high coefficient ultra-smooth anticorrosion aluminium conductor midium voltage cable that presses comprises the cable inner core and wraps in the outer cable outer layer of cable inner core.The number of cable inner core is one or more.In the present embodiment, the number of cable inner core is three.The cable inner core is followed successively by from inside to outside height and presses coefficient ultra-smooth aluminium alloy conductor 1, conductor shield 2, insulating barrier 3, insulation screen 4 and metal screen layer 5.Cable outer layer is followed successively by band 6, flexible metallic hose 7, sheath 8 from inside to outside.There is not filler between cable inner core and the cable outer layer.
Cable conductor of the present invention is that height presses coefficient ultra-smooth aluminium alloy conductor, adds the elements such as rare earth, iron, magnesium, copper, silicon in fine aluminium, melting become have high-elongation, creep-resistant property is good, electric conductivity is stable aluminium alloy conductor.With aluminium cable relatively, this aluminium alloy conductor creep-resistant property improves 300% with compactability, has thoroughly solved the cable joint relaxation problem that causes owing to cold flow or creep, the electrical connection performance that reaches aluminium alloy conductor is the same with the copper conductor switching performance stable.
It is the stranded aluminium alloy conductor of ladder track that height presses coefficient ultra-smooth aluminium alloy conductor.What make cable presses coefficient up to 95%.Common process manufacture method, conductor compacting coefficient only are 88%～92%, have thoroughly solved to press the low problem of coefficient.Height press the coefficient aluminium alloy conductor so that cable joint firmly, be difficult for lax, thoroughly change aluminium cable joint easily lax, oxidation and the problems such as electrical fire that cause.Simultaneously, because the aluminium alloy conductor that adopts the moulds of industrial equipment of special design to make, the surface is super smooth, satisfies medium and high voltage cable fully to the requirement of conductor smoothness, improves the product manufacture level, promotes cable voltage, local discharging level.
Height presses coefficient ultra-smooth aluminium alloy conductor and passes through annealing process, making its conductance is the most frequently used international 61% of the copper standard (IACS) of promoting, and simultaneously, the aluminium alloy conductor percentage elongation improves 30%, yield strength increases by 121%, thoroughly solves the hard frangibility problem of aluminium core conductor.
The flexible metal pillar is aluminum alloy strip self-locking armouring.The flexible metal pillar adopts that nonmagnetic aluminum alloy strip spiral is wrapped, joint joint self-locking structure.This structural advantage is to provide the good mechanical protective effect, improves the cable flexibility, has simultaneously the effect of anti-insect bite, anti-rat eaten.More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and the specification is principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the present invention.The protection range that the present invention requires is defined by appending claims and equivalent thereof.
Claims (4)
1. one kind high presses coefficient ultra-smooth anticorrosion aluminium conductor midium voltage cable, comprises the cable inner core and wraps in the outer cable outer layer of cable inner core; It is characterized in that described cable inner core is followed successively by from inside to outside height and presses coefficient ultra-smooth aluminium alloy conductor, conductor shield, insulating barrier, insulation screen and metal screen layer; Described cable outer layer is followed successively by band, flexible metallic hose, sheath from inside to outside.
2. height according to claim 1 presses coefficient ultra-smooth anticorrosion aluminium conductor midium voltage cable, it is characterized in that, it is the stranded aluminium alloy conductor of ladder track that described height presses coefficient ultra-smooth aluminium alloy conductor.
3. height according to claim 1 presses coefficient ultra-smooth anticorrosion aluminium conductor midium voltage cable, it is characterized in that, it is that the height of annealed processing presses the coefficient aluminium alloy conductor that described height presses coefficient ultra-smooth aluminium alloy conductor.
4. height according to claim 1 presses coefficient ultra-smooth anticorrosion aluminium conductor midium voltage cable, it is characterized in that, described flexible metal pillar is aluminum alloy strip self-locking armouring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210364845XA CN102867590A (en) | 2012-09-26 | 2012-09-26 | High-compression-coefficient super-smooth corrosion-resistant aluminum alloy conductor medium-voltage cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210364845XA CN102867590A (en) | 2012-09-26 | 2012-09-26 | High-compression-coefficient super-smooth corrosion-resistant aluminum alloy conductor medium-voltage cable |
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| CN102867590A true CN102867590A (en) | 2013-01-09 |
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| CN201210364845XA Pending CN102867590A (en) | 2012-09-26 | 2012-09-26 | High-compression-coefficient super-smooth corrosion-resistant aluminum alloy conductor medium-voltage cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456405A (en) * | 2013-08-23 | 2013-12-18 | 江苏长峰电缆有限公司 | Molded wire stranded conductor high-flame-retardance environment-friendly cable |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950625A (en) * | 2010-09-26 | 2011-01-19 | 杭州电缆有限公司 | Power cable |
| CN102254605A (en) * | 2011-05-09 | 2011-11-23 | 无锡市沪安电线电缆有限公司 | Aluminum alloy environment-friendly cable |
| CN202049799U (en) * | 2011-05-21 | 2011-11-23 | 无锡市明珠电缆有限公司 | Medium voltage power cable |
| CH704175A2 (en) * | 2010-11-18 | 2012-05-31 | Leoni Studer Ag | Single conductor cable i.e. medium-voltage and high voltage cable, for supplying operating voltage in e.g. high-rise building, has folding screen made from well conducting metal and provided between insulation layer and outer shell |
| CN102568691A (en) * | 2012-03-28 | 2012-07-11 | 江苏长峰电缆有限公司 | Environment-friendly mid-voltage fire resistant cable |
| CN202905276U (en) * | 2012-09-26 | 2013-04-24 | 上海摩恩电气股份有限公司 | High-compression-coefficient super-smooth corrosion-resistant aluminum alloy conductor medium-voltage cable |
-
2012
- 2012-09-26 CN CN201210364845XA patent/CN102867590A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950625A (en) * | 2010-09-26 | 2011-01-19 | 杭州电缆有限公司 | Power cable |
| CH704175A2 (en) * | 2010-11-18 | 2012-05-31 | Leoni Studer Ag | Single conductor cable i.e. medium-voltage and high voltage cable, for supplying operating voltage in e.g. high-rise building, has folding screen made from well conducting metal and provided between insulation layer and outer shell |
| CN102254605A (en) * | 2011-05-09 | 2011-11-23 | 无锡市沪安电线电缆有限公司 | Aluminum alloy environment-friendly cable |
| CN202049799U (en) * | 2011-05-21 | 2011-11-23 | 无锡市明珠电缆有限公司 | Medium voltage power cable |
| CN102568691A (en) * | 2012-03-28 | 2012-07-11 | 江苏长峰电缆有限公司 | Environment-friendly mid-voltage fire resistant cable |
| CN202905276U (en) * | 2012-09-26 | 2013-04-24 | 上海摩恩电气股份有限公司 | High-compression-coefficient super-smooth corrosion-resistant aluminum alloy conductor medium-voltage cable |
Non-Patent Citations (1)
| Title |
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| 郭红霞: "《电线电缆材料》", 31 July 2012, 机械工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456405A (en) * | 2013-08-23 | 2013-12-18 | 江苏长峰电缆有限公司 | Molded wire stranded conductor high-flame-retardance environment-friendly cable |
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Application publication date: 20130109 |
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| RJ01 | Rejection of invention patent application after publication |