A kind of spherical gasket for roasting high-performance surge arrester valve plate and its preparation process

Abstract

The invention discloses a spherical gasket for roasting the valve plate of a high-performance arrester and a preparation process thereof. The gasket comprises the following components and weight percentages: 5%-10% of bismuth oxide, 1%-5% of antimony oxide, high-performance arrester The valve plate granulates 85% to 94% of the fine powder; the preparation process includes the following steps: batching according to the formula ratio - pulverizing and mixing - forming balls into balls - screening - calcining - sieving. The spherical gasket is made of bismuth oxide, antimony oxide, and high-performance surge arrester valve granulated micropowder as the main formula, and the content of bismuth oxide and antimony oxide is strictly controlled. The roasting of the valve plate provides a guarantee for the superior performance of the high-performance surge arrester valve plate.

Description

technical field [0001] The invention belongs to the technical field of arrester valves, and relates to a high-performance spherical gasket for roasting arrester valves and a preparation process thereof. Background technique [0002] The rapid development of power transmission and transformation technology, ultra-high voltage AC power transmission and transformation technology and DC power transmission and transformation technology have become the main projects in my country's power system, and the corresponding high-performance DC and AC resistors have been widely used. The padding used in the production of traditional arrester valves is generally made of waste valves by crushing, sieving, and calcining. This kind of padding has many sharp corners, and the sharp corners of the padding often cause the surface of the valve in contact with it to be damaged. There are hole defects, which are difficult to remove, which reduces the quality of the valve plate and the production pas...

AI Technical Summary

Problems solved by technology

The padding used in the production of traditional arrester valves is generally made of waste valves by crushing, sieving, and calcining. This kind of padding has many sharp corners, and the sharp corners of the padding often cause the surface of the valve in contact with it to be damaged. There are hole defects, which are difficult to remove, which reduces the quality of the valve plate and the production pass rate. The shape of this cushion can be improved after ball milling and reprocessing, but there are many waste materials, the working environment is dusty, and the production efficiency of the cushion is extremely low; at the same time The atmosphere environment required in the firing process of high-performance DC and AC surge arrester valves has high requirements on gaskets. The change of bismuth oxide and antimony oxide content affects the basic performance of the valves after firing. The performance of valves fired with traditional gaskets Large parameter dispersion, low pass rate, and lower availability of valves; in addition, the spray granulation process of producing arrester valves will produce a large amount of high-performance arrester valve granulation powder, which is usually treated as waste. It causes a waste of resources and increases the production cost of the arrester valve plate