UHV Grid Insulators Can Withstand Millions of Volts and 50 Tons of Ttension
At present, China's ultra-high pressure and ultra-high voltage power grids have become a prominent symbol of rapid economic and social development. The sights of line towers, wire racks and wire nets are quite spectacular. However, what is not known is the achievement of power. Among the elements of the Great Wall, there is a small thing that is vital and often overlooked. It is an insulator.
Without an insulator, there is no high-voltage power grid. As a porcelain bottle weighing more than ten kilograms to several tens of kilograms, the appearance of the insulator is really inconspicuous, but the technology it contains is extremely rich.
As an important part of the substation and high-voltage transmission line infrastructure, the insulator bears three major tasks: insulation, support and mechanical connection. In ultra-high-voltage transmission lines, the voltage can exceed 1 million volts, and the transmission cable between the two towers exceeds 15 cm in diameter, which can generate more than 50 tons of tensile force. These high-voltage and strong tensile forces must first It is assumed by the insulator.
Porcelain insulators need to pass through raw material inspection, batching, ball milling, sieving, iron removal, pulping, granulation, billeting, glazing, firing, magnetic inspection, cutting and grinding, etc. Aiming at the requirements of the use of UHV power grids in China, it is the core performance of insulator pro