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Manufacturing method of high-strength ceramic insulator

A technology for ceramic insulators and a manufacturing method, which is applied to insulators, electrical components, circuits, etc., can solve the problems of easy drop in hydrophobicity, flashover accidents, and influence on power grid safety, etc., so as to enhance insulation performance and mechanical performance and improve service life. , to ensure the effect of safety

Inactive Publication Date: 2014-01-15
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Insulators are widely used in the field of high-voltage power transmission. Insulators are responsible for ensuring sufficient insulation of wires, cross-arms, and towers. During operation, they need to bear the vertical load and horizontal tension of the wires, and also withstand the sun, rain, and climate change. Corrosion of chemical substances, therefore, insulators must not only have good electrical properties, but also have sufficient mechanical strength. According to the structure, insulators can be divided into support insulators, suspension insulators, anti-pollution insulators and bushing insulators. It can be divided into three categories: line insulators, substation support insulators and bushings. According to the material of insulators, there are currently ceramic, glass and organic composite insulators. The quality of insulators is very important to the transmission network. For ceramic insulators It is said that the quality of its porcelain body occupies an important position. The main task of the insulator is to provide insulation and support for high-voltage transmission lines. This task is mainly completed by the insulator porcelain body. There are strict requirements. The above-mentioned performances of existing insulators need to be improved, and cracks are more likely to occur, and the hydrophobic performance is easy to decrease, and breakdown and flashover accidents are prone to occur, and the service life is reduced and affects the safety of the power grid.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) Take 50 parts by weight of clay and 50 parts of bauxite for mixing, and after mixing, put them into a mill for crushing and grinding to 100 mesh;

[0019] 2) adding 5 parts by weight of quicklime into a mill for crushing and grinding to 100 mesh;

[0020] 3) Fully stir and mix 50 parts of crushed clay, 50 parts of bauxite and 5 parts of quicklime, then add them to the mill, and add an appropriate amount of water to grind them into slurry;

[0021] 4) Put the mud into a vacuum aging room with a humidity of 70% for 5 days;

[0022] 5) Then add 10 parts by weight of glass fiber filaments and stir evenly;

[0023] 6) Put the mixed mud into the mold, and shape the blank into the required shape under the action of external force through the plastic forming method;

[0024] 7) Apply a uniform layer of glaze on the surface of the blank;

[0025] 8) Send the glazed blank into a kiln at 1200°C for sintering for 20 hours to obtain the finished product.

Embodiment 2

[0027] 1) Take 70 parts by weight of clay and 30 parts of bauxite for mixing, and after mixing, put them into a mill for crushing and grinding to 100 mesh;

[0028] 2) adding 15 parts by weight of quicklime into a mill for crushing and grinding to 100 mesh;

[0029] 3) Mix 70 parts of crushed clay, 30 parts of bauxite and 15 parts of quicklime thoroughly, then add them to the mill, and add an appropriate amount of water to grind them into slurry;

[0030] 4) Put the mud into a vacuum aging room with a humidity of 95% for 6 days;

[0031] 5) Then add 20 parts by weight of glass fiber filaments and stir evenly;

[0032] 6) Put the mixed mud into the mold, and shape the blank into the required shape under the action of external force through the plastic forming method;

[0033] 7) Apply a uniform layer of glaze on the surface of the blank;

[0034] 8) Send the glazed blank into a kiln at 1300°C for sintering for 30 hours to obtain the finished product.

Embodiment 3

[0036] 1) Take 60 parts by weight of clay and 40 parts of bauxite for mixing, and after mixing, put them into a mill for crushing and grinding to 80 mesh;

[0037] 2) adding 10 parts by weight of quicklime into a mill for crushing and grinding to 80 mesh;

[0038] 3) 60 parts of crushed clay, 40 parts of bauxite and 5-15 parts of quicklime are fully stirred and mixed, then added to the mill, and an appropriate amount of water is added to grind into a slurry;

[0039] 4) Put the mud into a vacuum aging room with a humidity of 95% for 5 days;

[0040] 5) Then add 15 parts by weight of glass fiber filaments and stir evenly;

[0041] 6) Put the mixed mud into the mold, and shape the blank into the required shape under the action of external force through the plastic forming method;

[0042] 7) Apply a uniform layer of glaze on the surface of the blank;

[0043] 8) Send the glazed blank into a kiln at 1300°C for sintering for 30 hours to obtain the finished product.

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PUM

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Abstract

The invention discloses a manufacturing method of a high-strength ceramic insulator. A finished product is manufactured through the steps of sorting, pulverizing, pulping, staling, adding of glass fiber yarns, putting in a mold and shaping, glazing and sintering in sequence. Compared with the prior art, the insulator manufactured with the method is remarkably improved on hydrophobic performance, dirt resistance, insulating property and mechanical property, does not crack easily when in use, and effectively reduces the accidents of breakdown and flashover, the service life of the insulator is prolonged, and the safety of a power network is ensured.

Description

technical field [0001] The invention relates to the field of manufacturing insulators, in particular to a method for manufacturing high-strength ceramic insulators. Background technique [0002] Insulators are widely used in the field of high-voltage power transmission. Insulators are responsible for ensuring sufficient insulation of wires, cross-arms, and towers. During operation, they need to bear the vertical load and horizontal tension of the wires, and also withstand the sun, rain, and climate change. Corrosion of chemical substances, therefore, insulators must not only have good electrical properties, but also have sufficient mechanical strength. According to the structure, insulators can be divided into support insulators, suspension insulators, anti-pollution insulators and bushing insulators. It can be divided into three categories: line insulators, substation support insulators and bushings. According to the material of insulators, there are currently ceramic, glas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B19/00
Inventor 薛艳波赵骞郎海涛牛辉
Owner STATE GRID CORP OF CHINA