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Ceramic material and spraying method for preventing corona discharge and pollution flashover on the surface of high-voltage lines

A technology of corona discharge and ceramic materials, which is applied in the direction of metal material coating process, ceramics, coatings, etc., can solve problems such as corona discharge, achieve high insulation, good surface wettability, prevent corona discharge and The effect of pollution flashover

Inactive Publication Date: 2016-04-06
XIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a ceramic material that prevents corona discharge and pollution flashover on the surface of high-voltage wires, and solves the problem that corona discharge will occur when the electric field strength on the surface of the existing wire exceeds the critical electric field strength for gas ionization

Method used

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  • Ceramic material and spraying method for preventing corona discharge and pollution flashover on the surface of high-voltage lines
  • Ceramic material and spraying method for preventing corona discharge and pollution flashover on the surface of high-voltage lines
  • Ceramic material and spraying method for preventing corona discharge and pollution flashover on the surface of high-voltage lines

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1, weighing according to mass percentage: rutile phase TiO with a particle size of 30-50 μm 2 28%, anatase phase TiO with a particle size of 30-50 μm 2 71%, auxiliary material Y 2 o 3 1%, the sum of the mass percentages of the above components is 100%, use a mechanical powder mixer to mix the above-mentioned weighed components evenly to obtain ceramic material powder;

[0032] Step 2, use diamond sand with a particle size of 35 μm to sandblast the surface of the aluminum transmission line LGJ150 / 20, the pressure of the sandblasting is 0.4MPa, and then use the atmospheric plasma spraying method to pass the ceramic material powder prepared in step 1 through powder feeding Before the device is delivered to the gun nozzle of the plasma spraying equipment, the process parameters of the plasma spraying equipment are controlled: hydrogen pressure 0.20Mpa, argon pressure 0.6Mpa, voltage 55V, current 500A, spraying distance 200mm; After the surface-treated wire surface i...

Embodiment 2

[0034] Step 1, weighing according to mass percentage: rutile phase TiO with a particle size of 30-50 μm 2 48%, anatase phase TiO with a particle size of 30-50 μm 2 51%, auxiliary material Y 2 o 3 1%, the sum of the mass percentages of the above components is 100%, use a mechanical powder mixer to mix the above-mentioned weighed components evenly to obtain ceramic material powder;

[0035]Step 2, use diamond sand with a particle size of 45 μm to sandblast the surface of the aluminum transmission line, the pressure of the sandblasting is 0.45MPa, and then use the atmospheric plasma spraying method to transport the ceramic material powder prepared in step 1 to the In front of the gun nozzle of the plasma spraying equipment, control the process parameters of the plasma spraying equipment: hydrogen pressure 0.25Mpa, argon pressure 0.70Mpa, voltage 60V, current 550A, spraying distance 220mm; the plasma spraying equipment is instantly heated and atomized and sprayed to the surface ...

Embodiment 3

[0037] Step 1, weighing according to mass percentage: rutile phase TiO with a particle size of 30-50 μm 2 71%, anatase phase TiO with a particle size of 30-50 μm 2 28%, auxiliary material Y 2 o 3 1%, the sum of the mass percentages of the above components is 100%, use a mechanical powder mixer to mix the above-mentioned weighed components evenly to obtain ceramic material powder;

[0038] Step 2, use diamond sand with a particle size of 55 μm to sandblast the surface of the aluminum transmission line, the pressure of the sandblasting is 0.5MPa, and then use the atmospheric plasma spraying method to transport the ceramic material powder prepared in step 1 to the In front of the nozzle of the plasma spraying equipment, control the process parameters of the plasma spraying equipment: hydrogen pressure 0.30Mpa, argon pressure 0.75Mpa, voltage 70V, current 600A, spraying distance 250mm; the plasma spraying equipment is instantly heated and atomized and sprayed to the surface trea...

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Abstract

The invention discloses a ceramic material for preventing corona discharge and pollution flashover on the surface of high-voltage lines, which is composed of TiO2 and auxiliary material Y2O3, and the TiO2 includes rutile phase TiO2 and anatase phase TiO2. The invention also discloses a spraying method thereof. Firstly, a mechanical powder mixer is used to mix the above-mentioned weighed components evenly to obtain ceramic material powder; , after cooling. The present invention uses TiO2 powders of different crystal forms as raw materials, adopts a mechanical mixing method to prepare ceramic material powders, and then conducts plasma spraying on the surface of aluminum transmission lines to prepare functional TiO2 coatings. The thickness of the coatings is 0.1 to 0.2 mm. The layer has the advantages of good surface wettability, high insulation, and photocatalytic performance in the transmission line process, and can prevent corona discharge and pollution flashover on the surface of high-voltage lines.

Description

technical field [0001] The invention belongs to the technical field of non-metallic materials, and relates to a ceramic material for preventing corona discharge and pollution flashover on the surface of high-voltage lines, and also relates to a spraying method of the ceramic material. Background technique [0002] As the scale and capacity of the power system continue to expand, the transmission voltage and the voltage level of the substation also increase accordingly. When the electric field strength on the surface of the wire exceeds the critical electric field strength for gas ionization, corona discharge will occur. Corona discharge not only consumes electricity, but also affects radio signals, and it also emits noise that affects the normal life of residents along the line. The currently known cause of corona discharge is that the surface of the wire is not smooth, such as dust, etc. These dust will produce a tip effect and cause corona discharge. Distortion of the ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/12C23C4/16C23C4/10C23C4/11C23C4/134
Inventor 冯拉俊王兆华闫爱军雷阿利魏海涛
Owner XIAN UNIV OF TECH
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