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Composite mineralizer high-resistance porcelain material and application thereof

A mineralizer and high resistance technology, applied in the field of silicate material preparation, can solve the problems of high sintering temperature, easy aging and failure, and difficulty in ensuring long-term reliability, and achieve the effect of reducing energy consumption

Inactive Publication Date: 2020-08-28
SUZHOU PORCELAIN INSULATOR WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Porcelain insulators used in DC transmission systems are prone to aging and failure due to long-term exposure to DC electric fields, which affects the long-term safety and reliability of DC power grids
Resistivity is an important indicator for measuring the aging resistance of porcelain insulators used in DC transmission systems. The current porcelain insulators used in DC transmission systems generally have a resistivity of 10 at a measurement temperature of 90°C by adding a single mineralizer to the ingredients. 12 Ω·m, this standard value can cope with most of the current common operating environments, but it is difficult to guarantee long-term reliability in complex operating environments
[0003] Although the Chinese invention patent application with the application number CN201711332844.6 discloses the compounding of various mineralizers for the preparation of electric porcelain insulators, the sintering temperature is too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] This embodiment relates to a composite mineralizer high-resistance porcelain material, comprising: 45% clay, 35% bauxite, 1% composite mineralizer and 19% boron oxide by weight; the composite mineralizer includes a weight ratio of 1:1 zinc oxide and barium oxide. The sintering temperature of high-strength porcelain insulators for DC systems using this composite mineralizer high-resistance porcelain material is 1249°C, and the resistivity at 90°C is tested to be 10. 13 Ω·m.

Embodiment 2

[0018] This embodiment relates to a composite mineralizer high-resistance porcelain material, which comprises: 45% clay, 35% bauxite, 2% composite mineralizer and 18% boron oxide by weight; the composite mineralizer includes a weight ratio of 1 : 1 zinc oxide and barium oxide. The sintering temperature of high-strength porcelain insulators for direct current systems using this composite mineralizer high-resistance porcelain material is 1246°C, and the resistivity at 90°C has been tested to be 10. 13 Ω·m.

Embodiment 3

[0020] This embodiment relates to a composite mineralizer high-resistance porcelain material, which comprises: 45% clay, 35% bauxite, 2% composite mineralizer and 18% boron oxide by weight; the composite mineralizer includes a weight ratio of 1 : 1:1 zinc oxide, barium oxide and strontium oxide. The sintering temperature of high-strength porcelain insulators for DC systems using this composite mineralizer high-resistance porcelain material is 1245°C, and the resistivity at 90°C is tested to be 10. 13 Ω·m.

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Abstract

The invention discloses a composite mineralizer high-resistance ceramic material and application thereof, and belongs to the technical field of silicate material preparation. The composite mineralizerhigh-resistance porcelain material comprises the following components in percentage by weight: 45% of clay, 35% of alumina, and 1-2% of a composite mineralizer, with the balance being inorganic non-metallic material flux. The composite mineralizer comprises at least two divalent metal oxides. The composite mineralizer high-resistance ceramic material is used for manufacturing a porcelain insulator of a direct-current system, the sintering temperature of high-strength porcelain can be reduced, and energy consumption is reduced.

Description

technical field [0001] The invention relates to a technique in the field of silicate material preparation, in particular to a composite mineralizer high-resistance porcelain material and its application. Background technique [0002] Porcelain insulators used in DC transmission systems are prone to aging and failure due to long-term exposure to DC electric fields, which affects the long-term safety and reliability of DC power grids. Resistivity is an important indicator for measuring the aging resistance of porcelain insulators used in DC transmission systems. The current porcelain insulators used in DC transmission systems generally have a resistivity of 10 at a measurement temperature of 90°C by adding a single mineralizer to the ingredients. 12 Ω·m, this standard value can cope with most of the current common operating environments, but it is difficult to guarantee long-term reliability in complex operating environments. [0003] Although the Chinese invention patent app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/26C04B33/32
CPCC04B33/13C04B33/26C04B33/32C04B2235/3217C04B2235/3213C04B2235/3215C04B2235/3284C04B2235/3409C04B2235/656C04B2235/96
Inventor 周永新戴裕军
Owner SUZHOU PORCELAIN INSULATOR WORKS