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High-voltage glass insulator

A glass insulator and high-voltage technology, applied in the field of glass insulators for high-voltage transmission lines, can solve the problems of high dielectric loss and low volume resistivity, and achieve the effects of reducing dielectric loss, meeting characteristic requirements, and improving volume resistivity.

Inactive Publication Date: 2013-04-10
三瑞科技(江西)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems of low volume resistivity and high dielectric loss in high-alkali glass in the prior art, the present invention provides a high-voltage glass insulator with high volume resistivity, low dielectric loss and high alkali content.

Method used

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Examples

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Effect test

Embodiment 1

[0014] Example 1, the high-voltage glass insulator includes glass parts, and the chemical composition weight percentage of the glass parts is: silicon dioxide 68%, aluminum oxide 4%, calcium oxide 9%, magnesium oxide 4%, sodium oxide 12%, Potassium oxide 3%, according to the above chemical composition and the actual burning rate of each element and other parameters, the industry process designer can calculate the weight ratio of quartz sand, feldspar, limestone mineral raw materials and potassium carbonate, soda ash chemical raw materials, various raw materials All can be purchased in the market, and the weight percentage of various raw materials is calculated according to the designed chemical composition. The performance indicators of the glass parts are: volume resistivity: 4.8×10 at 30°C 14 Ohm cm, at 80°C: 3.6×10 11 Ohm cm; the dielectric loss is 1.35% at 30°C. Various oxide raw materials in this embodiment can be purchased in the market, and the manufacturing method of...

Embodiment 2

[0015] Example 2, the high-voltage glass insulator includes a glass piece, and the weight percentage of the chemical composition of the glass piece is: 65% of silicon dioxide, 4% of aluminum oxide, 9% of calcium oxide, 5% of magnesium oxide, 12% of sodium oxide, Potassium oxide 5%, according to the above chemical composition and parameters such as the actual burning rate of each element, the process designer in this industry can calculate the weight percentage of quartz sand, feldspar, limestone mineral raw materials and potassium carbonate, soda ash chemical raw materials, the glass The performance indicators of the parts are: volume resistivity: 5.2×10 at 30°C 14 Ohm cm, 6.8×10 at 80°C 11 Ohm cm; at 30°C, the dielectric loss is 1.12%. Various oxide raw materials in this embodiment can be purchased in the market, and the manufacturing method of the glass part of the high-voltage glass insulator in the present invention is the same as the manufacturing method of the glass pa...

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Abstract

The invention discloses a high-voltage glass insulator which comprises a glass part, wherein the glass part comprises the following chemical components in percentage by weight: 65-72% of silicon dioxide, 2-4% of aluminum oxide, 6-9% of calcium oxide, 2-5% of magnesium oxide, 9-12% of sodium oxide and 3-6% of potassium oxide; and the performance index of the glass part is as follows: the volume resistivity is not lower than 10<14> ohm.cm at 30 DEG C and is not lower than 10<11> ohm.cm at 80 DEG C, and the dielectric loss is not higher than 1.5% at 30 DEG C. Compared with the existing glass insulator, the high-voltage glass insulator disclosed by the invention increases the volume resistivity of the glass part by two orders of magnitude and decreases the dielectric loss by two thirds; and the high-voltage glass insulator has favorable processing property, is suitable for industrial production, meets the specification requirements of the high-voltage glass insulator and ensures the normal operation of power transmission.

Description

technical field [0001] The invention relates to a glass insulator for a high-voltage transmission line. Background technique [0002] Glass insulators for high-voltage transmission lines should have the characteristics of high mechanical strength, excellent insulation performance, and good thermal stability. Therefore, the glass parts used to manufacture glass insulators should meet the above-mentioned requirements for the characteristics of high-voltage insulators. The chemical composition of the insulator glass is the key to determine the performance of the glass. At present, there are two types of glass components in insulators: low-alkali (alkali content not exceeding 2%) glass and high-alkali (alkali content above 12%) glass. High-alkali glass has low melting temperature, large expansion coefficient, and easy industrial production, so it is widely used. Such as flat glass, bottle glass and utensil glass. However, the above-mentioned high-alkali glass has low insulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C4/16C03C3/087
Inventor 童昌文吴艳红
Owner 三瑞科技(江西)有限公司
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