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An overhead wire coated with an anti-ice and snow carbon layer and its preparation method

An overhead wire and surface coating technology, applied in the direction of power cables, cable/conductor manufacturing, circuits, etc. for overhead applications, which can solve the problem that the safety of maintenance personnel is not guaranteed, changing weather and physical conditions, and wire breakage. Power interruption and other problems, to avoid electrochemical corrosion, enhance transmission efficiency, and reduce water adhesion

Active Publication Date: 2020-02-11
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Snow accumulation and icing on transmission lines will cause short circuit of insulating terminals and increase the burden on transmission lines. Melting and falling of ice and snow will also cause dancing of transmission lines, which will lead to flashover of wires and lines, resulting in accidents such as tower collapse, wire breakage and power interruption. , bringing huge losses to production and life
These accidents mostly occur in winter. The harsh and changeable weather and physical conditions make fast and safe repair and maintenance difficult, and the safety of maintenance personnel cannot be guaranteed.

Method used

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  • An overhead wire coated with an anti-ice and snow carbon layer and its preparation method

Examples

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Embodiment 1

[0055] An overhead wire coated with an anti-ice and snow carbon layer, comprising an overhead wire and an anti-ice and snow carbon layer coated on the outer layer of the overhead wire, the cross-sectional area of ​​the overhead wire coated with an anti-ice and snow carbon layer is 0.5mm 2 , the thickness of the anti-ice and snow carbon layer is 100nm, and the overhead wires and the anti-ice and snow carbon layer are connected by chemical bonds. Wherein, the overhead wires are aluminum wires.

[0056] A preparation method of an overhead wire whose surface is coated with an anti-icing and snow carbon layer is carried out according to the following steps:

[0057] Step 1, Preparation for Electrochemical Reaction

[0058] (1) A metal wire 1-aluminum wire with a diameter of 1±0.1mm×length 1800±0.01mm is used as a cathode after being wound, and a high-purity graphite rod 2 with a diameter of 15±0.1mm×height of 120±0.01mm and a diameter of 2.5±0.01mm 304 stainless steel rods of 0.0...

Embodiment 2

[0067] An overhead wire coated with an anti-ice and snow carbon layer, comprising an overhead wire and an anti-ice and snow carbon layer coated on the outer layer of the overhead wire, the cross-sectional area of ​​the overhead wire coated with an anti-ice and snow carbon layer is 300mm 2 , the thickness of the anti-ice and snow carbon layer is 50 μm, and the overhead wires and the anti-ice and snow carbon layer are connected by chemical bonds. Wherein, the overhead wires are aluminum wires.

[0068] A kind of preparation method of the overhead wire that the surface is coated with anti-ice and snow carbon layer, with embodiment 1, difference is:

[0069] (1) The molten salt is 0.56 kg of LiCl-KCl (the molar ratio is 3:2), while adding 5mol% of K 2 CO 3 ;

[0070] (2) The horizontal distance between the cathode and the anode is 10mm, and the electrodeposition time is 120min;

[0071] The other methods are the same, and the obtained overhead wire coated with the anti-icing a...

Embodiment 3

[0073] An overhead wire coated with an anti-ice and snow carbon layer, comprising an overhead wire and an anti-ice and snow carbon layer coated on the outer layer of the overhead wire, the cross-sectional area of ​​the overhead wire coated with an anti-ice and snow carbon layer is 100mm 2 , the thickness of the anti-ice and snow carbon layer is 5 μm, and the overhead wires and the anti-ice and snow carbon layer are connected by chemical bonds. Wherein, the overhead wire is an aluminum alloy wire, wherein the content of aluminum is 99.5wt%.

[0074] A kind of preparation method of the overhead wire that the surface is coated with anti-ice and snow carbon layer, with embodiment 1, difference is:

[0075] (1) Change the constant voltage in step 2 to pulse deposition, the voltage value is still 2.0±0.1V, the frequency is 200HZ, and the duty cycle is 50%.

[0076] (2) The deposition time of step 2 is 1 h; other methods are the same, and an overhead wire coated with an anti-ice and...

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Abstract

An overhead wire whose surface is coated with an anti-ice and snow carbon layer and a preparation method thereof belongs to the field of power transmission. The overhead wires coated with an anti-ice and snow carbon layer include the overhead wires and the anti-ice and snow carbon layer coated on the outer layer of the overhead wires. The cross-sectional area of ​​the overhead wires is 0.1 to 300 mm. 2 , the thickness of the anti-ice and snow carbon layer is 100nm ~ 50 μm, and the overhead wires and the anti-ice and snow carbon layer are connected by chemical bonds. The preparation method is: use metal wires as cathodes; graphite rods are connected to stainless steel rods as anodes; melt molten salt, pass in inert gas, and immerse the cathode and anode into the melt to form a two-electrode electrolysis system, and apply it at a certain temperature. Electric field is used to perform a reduction electrodeposition process of carbon source ions. After cleaning and drying, an overhead wire coated with an anti-ice and snow carbon layer is obtained. This method is a non-damaging electrodeposition carbon-based coating method on the surface of overhead metal wires. It has the characteristics of low cost, environmental friendliness, simple operation and easy industrial production.

Description

technical field [0001] The invention relates to the preparation technology of an anti-ice and snow carbon coating for overhead wires in the field of electric power transmission, in particular to an overhead wire whose surface is coated with an anti-ice and snow carbon layer and a preparation method thereof. Background technique [0002] Most of the overhead wires used in the outdoor transmission of electricity are bare wires, and ice, snow, and freezing rain often occur in cold weather, which will cause snow and ice on the transmission lines. Snow accumulation and icing on transmission lines will cause short circuit of insulating terminals and increase the burden on transmission lines. Melting and falling of ice and snow will also cause dancing of transmission lines, which will lead to flashover of wires and lines, resulting in accidents such as tower collapse, wire breakage and power interruption. , bringing huge losses to production and life. These accidents mostly occur ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/02H01B7/28H01B7/282H01B9/00H01B13/22
CPCH01B1/02H01B1/023H01B7/28H01B7/2825H01B9/008H01B13/22H01B13/222H01B13/227H01B13/228
Inventor 宋秋实谢宏伟尹华意宁志强
Owner NORTHEASTERN UNIV LIAONING