Ceramic material preventing high voltage line surface corona discharge and pollution flashover and spraying method

A corona discharge, ceramic material technology, applied in metal material coating process, ceramics, coatings and other directions, can solve problems such as corona discharge, achieve high insulation, prevent corona discharge and pollution flashover discharge, surface moisturizing good moisturizing effect

Inactive Publication Date: 2014-04-09
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 preventing high voltage line surface corona discharge and pollution flashover and spraying method
  • Ceramic material preventing high voltage line surface corona discharge and pollution flashover and spraying method
  • Ceramic material preventing high voltage line surface corona discharge and pollution flashover and spraying method

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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 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; The surface of the wire after surface treatm...

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 preventing high voltage line surface corona discharge and pollution flashover. The ceramic material consists of TiO2 and auxiliary material Y2O3, wherein TiO2 includes rutile phase TiO2 and anatase phase TiO2. The invention also discloses a spraying method of the ceramic material. Firstly, a mechanical powder mixer is used to mix the abovementioned weighed components uniformly to obtain ceramic material powder; and then plasma spraying equipment is adopted to spray the ceramic material powder to the surface of an aluminium power transmission line subjected to sand blasting, and cooling is performed. The ceramic material uses TiO2 powder of different crystal forms as raw materials, adopts a mechanical mixing method to prepare ceramic material powder, then plasma spraying is performed on the surface of the aluminium power transmission line to prepare a functional type TiO2 coating, the thickness of the coating is 0.1 to 0.2 mm, and the coating has the advantages of having good surface wetability and high insulating performance, and enabling the power line to have photocatalytic performance and other advantages in a power transmission process, and high voltage line surface corona discharge and pollution flashover discharge can be prevented.

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 Applications(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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