A method for forming a multi-chamber lightning arrester

Abstract

The invention relates to a formation method of a multi-cavity lightning arrester. Natural rubber and ethylene propylene rubber are respectively employed as materials of a silicon rubber core strip anda silicon rubber jacket according to different characteristics of the silicon rubber core strip and the silicon rubber jack, and the multi-cavity lightning arrester is processed and fabricated by theformation method of silicon rubber core strip vulcanization formation and silicon rubber jacket vulcanization formation for two times. Compared a one-time formation fabrication method, the multi-cavity gap lightning arrester produced by a stepped vulcanization formation method of silicon rubber core strip vulcanization formation and silicon rubber jacket vulcanization formation has the advantagesthat the finished rate can be effectively improved, and the finished rate can reach 98% or above; and the silicon rubber core strip and the silicon rubber jacket employs different fabrication materials according to different performance demands, the production cost can be substantially reduced, and the average production cost is 70% of the production cost of a zinc oxide lightning arrester.

Description

technical field [0001] The invention relates to the technical field of electric equipment, in particular to a forming method of a multi-chamber lightning arrester. Background technique [0002] Since the development of zinc oxide arresters in the 1960s, the technology of lightning protection for power system lines using the voltage-sensitive characteristics of zinc oxide has developed rapidly, and zinc oxide arresters have been widely used. However, with the development of society and economy, limited by the voltage gradient of zinc oxide resistors, it will be very difficult for zinc oxide arresters to make further breakthroughs in terms of volume, weight, installation height and production cost. In addition, the service life of the zinc oxide resistor is greatly shortened due to the long-term exposure to the system voltage of the zinc oxide arrester. voltage, but this method does not change the essence of the zinc oxide arrester. This type of arrester still uses the pressu...

AI Technical Summary

Problems solved by technology

However, because this type of arrester completely abandons the zinc oxide resistor, its structure is very different from that of the current arrester, and there is no process such as winding the resistor, so it is impossible to directly use the current arrester manufacturing process, that is, the process described in the patent CN103325511A; at the same time, this type of arrester is According to the characteristics of arcing, spraying and arc extinguishing in the air gap of the chamber structure to discharge the lightning current and cut off the continuous flow of power frequency, such as the principle described in the patent CN106911080A, how to ensure the structure and size of the chamber and make the chamber The structure has good insulation and toughness, and also has a high yield rate, which is the key problem faced by the manufacturing process of this type of arrester