CN105006296A - High-voltage cable with light weight and high strength - Google Patents
High-voltage cable with light weight and high strength Download PDFInfo
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- CN105006296A CN105006296A CN201510499426.0A CN201510499426A CN105006296A CN 105006296 A CN105006296 A CN 105006296A CN 201510499426 A CN201510499426 A CN 201510499426A CN 105006296 A CN105006296 A CN 105006296A
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- aluminium alloy
- insulating barrier
- conductor wires
- tension cable
- conductive unit
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Abstract
The invention relates to a high-voltage cable with light weight and high strength. Light weight of the high-voltage cable is enabled to be ensured through improving the texture and the like of a conductive material of the high-voltage cable and the arrangement mode of each layer of a layered structure. In addition, the tensile strength is enabled to be greatly improved at the same time under the condition that the overall conductivity is improved, so that the durability and the applicability of the high-voltage cable are enabled to be greatly improved.
Description
Technical field
The invention belongs to high-tension electricity field and Material Field, particularly relate to a kind of light-high-strength high-tension cable.
Background technology
High-tension cable is applied to every field, because it wants teletransmission electric power, therefore very high for its conduction needs, also requires that electricity damages simultaneously and is reduced to low as far as possible.Be no matter high aloft cable or seabed or underground high voltage cable, all need there is very high requirement to its lighting and tensile strength properties, have higher requirement to the corrosion resistance of its crust and durability simultaneously.
At present in order to improve the intensity of high-tension cable, emphasis is studied on its crust, by improving the intensity of sheath and belting layer thus improving the overall tensile strength of high-tension cable, but seldom the intensity of inner conductive unit is studied, therefore when crust tensile strength reaches its limit or after reaching its fatigue limit, inner conductive unit can not play facilitation to whole cable intensity, thus easily causes crust to rupture.
Summary of the invention
The object of the invention is to propose a kind of light-high-strength high-tension cable.
Realize especially by following technological means:
A kind of light-high-strength high-tension cable, described high-tension cable comprises from the inside to the outside: conductive unit, belting layer, watertight composition and sheath; Described conductive unit comprises conductor wires, insulating barrier and insulation screen, and described insulating barrier is wrapped in conductor wires outside, described insulation screen is wrapped in insulating barrier outside; Watertight composition is wrapped in belting layer outside, and outermost layer is sheath;
Described conductor wires is aluminium alloy, described aluminium alloy is counted: Ni:0.5 ~ 1.0%, Fe:0.08 ~ 0.12%, Si:0.02 ~ 0.06%, RE:0.001 ~ 0.006%, Be:0.01 ~ 0.02%, Zr:0.06 ~ 0.10%, Mo:0.6 ~ 1.1%, Sc:0.004 ~ 0.006%, surplus is aluminium and inevitable impurity;
Containing hardening constituent Zr in the microstructure of described aluminium alloy
2mo
3ni phase, and this hardening constituent percent by volume in aluminium alloy is 2 ~ 5%; Also containing highly dispersed Zr-Sc phase in the microstructure of described aluminium alloy, and this Zr-Sc phase percent by volume in aluminium alloy is 0.8 ~ 1.6%.
As preferably, after described aluminium alloy is shaped to conductor wires, processed by following heat treatment mode: after being heated to 500 ~ 620 DEG C of temperature, be incubated 2 ~ 6h, then conductor wires is inserted in quenching oil and carry out chilling, after-80 ~-120 DEG C of subzero treatment 20 ~ 30min, return to room temperature after quenching, obtain conductor wires finished product.
As preferably, the temperature of described quenching oil remains at 50 ~ 60 DEG C in quenching process.
As preferably, described conductive unit is multiple, and multiple conductive unit is wrapped up by described belting layer jointly, arranges filler between multiple described conductive unit, and described filler is insulation soft material.
As preferably, the raw materials by weight portion of described insulating barrier comprises following component: high density polyethylene (HDPE): 62 ~ 66 parts, magnesium hydroxide: 6 ~ 8 parts, antioxidant: 1 ~ 2 part, calcium titanate: 1 ~ 2 part, silicon dioxide: 1 ~ 2 part; The raw material of described insulating barrier prepares insulating barrier according to the preparation method of existing insulating barrier.
effect of the present invention is:
1, by limiting Fe content in conductor material aluminium alloy, thus when significantly not reducing its conductivity, significantly improve the intensity of conductor; By also rationally limiting content to the interpolation of Sc in aluminium alloy, making Sc and Zr form complex precipitates, thus reaching the effect of strengthening and stabilizing tissue; By rationally limiting the content of RE, making crystal grain in aluminium alloy microstructure obtain significantly refinement, by limiting Zr, Mo, Ni content, making hardening constituent Zr
2mo
3the volume of Ni phase can increase substantially intensity, does not increase oeverall quality again.
2, by adjusting the aluminium alloy constituent content of conductor wires, thus under the prerequisite improving conductivity, increase substantially its tensile strength, because high-tension cable skin (belting layer, watertight composition sheath etc.) all has certain ductility, therefore, in time being subject to higher tensile force, the intensity that the high-tensile of inner conductor wire rod makes cable outer layer bear reduces greatly, thus ensure that the durability of high-tension cable entirety.
3, by adjusting the component of conductor material external insulation and content, thus when ensureing ductility, improve its intensity, in order to adapt to the high strength of conductor material.
4, by rationally determining the heat treating regime of aluminium alloy, the microstructure of alloy is optimized, and intensity is improved on the whole.
5, by during to aluminum alloy heat process, increase subzero treatment after quenching, make microstructure even.
Embodiment
embodiment 1
A kind of light-high-strength high-tension cable, described high-tension cable comprises from the inside to the outside: conductive unit, belting layer, watertight composition and sheath; Described conductive unit comprises conductor wires, insulating barrier and insulation screen, and described insulating barrier is wrapped in conductor wires outside, described insulation screen is wrapped in insulating barrier outside; Described conductive unit is 6, and 6 conductive units are wrapped up by described belting layer jointly, and watertight composition is wrapped in belting layer outside, and outermost layer is sheath; Arrange filler between described multiple conductive unit, described filler is insulation soft material.The raw materials by weight portion of described insulating barrier comprises following component: high density polyethylene (HDPE): 63 parts, magnesium hydroxide: 6.8 parts, antioxidant: 1.6 parts, calcium titanate: 1.2 parts, silicon dioxide: 1.8 parts.Described conductor wires is aluminium alloy, and described aluminium alloy is counted: Ni:0.8%, Fe:0.1%, Si:0.05%, RE:0.003%, Be:0.016%, Zr:0.08%, Mo:0.9%, Sc:0.005%, and surplus is aluminium and inevitable impurity; Containing hardening constituent Zr in the microstructure of described aluminium alloy
2mo
3ni phase, and this hardening constituent percent by volume in aluminium alloy is 3.6%; Also containing highly dispersed Zr-Sc phase in the microstructure of described aluminium alloy, and this Zr-Sc phase percent by volume in aluminium alloy is 1.1%.
embodiment 2
A kind of light-high-strength high-tension cable, described high-tension cable comprises from the inside to the outside: conductive unit, belting layer, watertight composition and sheath; Described conductive unit comprises conductor wires, insulating barrier and insulation screen, and described insulating barrier is wrapped in conductor wires outside, described insulation screen is wrapped in insulating barrier outside; Described conductive unit is 8, and 8 conductive units are wrapped up by described belting layer jointly, and watertight composition is wrapped in belting layer outside, and outermost layer is sheath; Between described multiple conductive unit, filler is set, described conductor wires is aluminium alloy, described aluminium alloy is counted: Ni:0.9%, Fe:0.09%, Si:0.051%, RE:0.005%, Be:0.016%, Zr:0.09%, Mo:1.0%, Sc:0.005%, surplus is aluminium and inevitable impurity; Containing hardening constituent Zr in the microstructure of described aluminium alloy
2mo
3ni phase, and this hardening constituent percent by volume in aluminium alloy is 2.9%; Also containing highly dispersed Zr-Sc phase in the microstructure of described aluminium alloy, and this Zr-Sc phase percent by volume in aluminium alloy is 1.2%.After described aluminium alloy is shaped to conductor wires, processed by following heat treatment mode: after being heated to 582 DEG C of temperature, be incubated 5h, then conductor wires is inserted in quenching oil and carry out chilling, after-96 DEG C of subzero treatment 28min, return to room temperature after quenching, obtain conductor wires finished product.The temperature of described quenching oil remains at 52 DEG C in quenching process.
Claims (5)
1. a light-high-strength high-tension cable, described high-tension cable comprises from the inside to the outside: conductive unit, belting layer, watertight composition and sheath; It is characterized in that: described conductive unit comprises conductor wires, insulating barrier and insulation screen, and described insulating barrier is wrapped in conductor wires outside, described insulation screen is wrapped in insulating barrier outside; Watertight composition is wrapped in belting layer outside, and outermost layer is sheath;
Described conductor wires is aluminium alloy, described aluminium alloy is counted: Ni:0.5 ~ 1.0%, Fe:0.08 ~ 0.12%, Si:0.02 ~ 0.06%, RE:0.001 ~ 0.006%, Be:0.01 ~ 0.02%, Zr:0.06 ~ 0.10%, Mo:0.6 ~ 1.1%, Sc:0.004 ~ 0.006%, surplus is aluminium and inevitable impurity;
Containing hardening constituent Zr in the microstructure of described aluminium alloy
2mo
3ni phase, and this hardening constituent percent by volume in aluminium alloy is 2 ~ 5%; Also containing highly dispersed Zr-Sc phase in the microstructure of described aluminium alloy, and this Zr-Sc phase percent by volume in aluminium alloy is 0.8 ~ 1.6%.
2. high-tension cable according to claim 1, it is characterized in that, after described aluminium alloy is shaped to conductor wires, processed by following heat treatment mode: after being heated to 500 ~ 620 DEG C of temperature, be incubated 2 ~ 6h, then conductor wires is inserted in quenching oil and carry out chilling, after-80 ~-120 DEG C of subzero treatment 20 ~ 30min, return to room temperature after quenching, obtain conductor wires finished product.
3. high-tension cable according to claim 2, is characterized in that, the temperature of described quenching oil remains at 50 ~ 60 DEG C in quenching process.
4. high-tension cable according to claim 1, is characterized in that, described conductive unit is multiple, and multiple conductive unit is wrapped up by described belting layer jointly, arranges filler between multiple described conductive unit, and described filler is insulation soft material.
5. high-tension cable according to claim 1, it is characterized in that, the raw materials by weight portion of described insulating barrier comprises following component: high density polyethylene (HDPE): 62 ~ 66 parts, magnesium hydroxide: 6 ~ 8 parts, antioxidant: 1 ~ 2 part, calcium titanate: 1 ~ 2 part, silicon dioxide: 1 ~ 2 part; The raw material of described insulating barrier prepares insulating barrier according to the preparation method of existing insulating barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510499426.0A CN105006296B (en) | 2015-08-15 | 2015-08-15 | High-voltage cable with light weight and high strength |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510499426.0A CN105006296B (en) | 2015-08-15 | 2015-08-15 | High-voltage cable with light weight and high strength |
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| CN105006296A true CN105006296A (en) | 2015-10-28 |
| CN105006296B CN105006296B (en) | 2017-01-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710682A (en) * | 2017-02-27 | 2017-05-24 | 张家口新叶电缆有限公司 | Novel flame-retardant cable and preparation thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304682A (en) * | 2011-09-14 | 2012-01-04 | 无锡市嘉邦电力管道厂 | Thermal treatment method of aluminum alloy cable |
| CN103165210A (en) * | 2012-11-16 | 2013-06-19 | 宁夏海洋线缆有限公司 | Energy-saving heat-resisting aluminium alloy cable |
| RU145334U1 (en) * | 2014-04-07 | 2014-09-20 | Общество с ограниченной ответственностью "СЕВАН" | ELECTRIC POWER CABLE |
| CN104651683A (en) * | 2015-03-18 | 2015-05-27 | 中南大学 | Aluminum alloy subjected to composite microalloying of Sc and Zr and preparation method thereof |
-
2015
- 2015-08-15 CN CN201510499426.0A patent/CN105006296B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304682A (en) * | 2011-09-14 | 2012-01-04 | 无锡市嘉邦电力管道厂 | Thermal treatment method of aluminum alloy cable |
| CN103165210A (en) * | 2012-11-16 | 2013-06-19 | 宁夏海洋线缆有限公司 | Energy-saving heat-resisting aluminium alloy cable |
| RU145334U1 (en) * | 2014-04-07 | 2014-09-20 | Общество с ограниченной ответственностью "СЕВАН" | ELECTRIC POWER CABLE |
| CN104651683A (en) * | 2015-03-18 | 2015-05-27 | 中南大学 | Aluminum alloy subjected to composite microalloying of Sc and Zr and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710682A (en) * | 2017-02-27 | 2017-05-24 | 张家口新叶电缆有限公司 | Novel flame-retardant cable and preparation thereof |
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Inventor after: Hou Qinmin Inventor after: Ji Yangxi Inventor after: Zhang Lishuai Inventor after: Luo Jie Inventor after: Wang Guangxin Inventor after: Liu Ping Inventor after: Li Jun Inventor after: Li Xingguo Inventor after: Hou Qinglei Inventor after: Cheng Kuai Inventor after: Wang Weishuai Inventor after: Zhang Zhihua Inventor before: Li Bai |
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Effective date of registration: 20161024 Address after: 277800 Zaozhuang New District, Shandong, the Yellow River Road, No. 999 Applicant after: Zaozhuang Power Supply Company of State Grid Shandong Electric Power Company Applicant after: State Grid Corporation of China Address before: 102218 Beijing city Changping District East Town Longde Zijin 5-1018 Applicant before: Li Bai |
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