Gas Chromatograph for electrical equipment SF6 decomposition product analysis

Gas Chromatograph for electrical equipment SF6 decomposition product analysis

Description

SF6 gas has a century-old history. It is an artificial inert gas synthesized by two French chemists, Moissan and Lebeau, in 1900. Around 1940, the U.S. military used it for the Manhattan Project (nuclear military). Became commercially available in 1947. Currently SF6 gas is mainly used in the power industry. SF6 gas is used for 4 types of electrical equipment as insulation and/or arc extinguishing; SF6 circuit breakers and GIS (here refers to sulfur hexafluoride closed combination electrical appliances, internationally known as "Gas Insulated Switchgear") )), SF6 load switch equipment, SF6 insulated transmission pipelines, SF6 transformers and SF6 insulated substations. 80% is used in high and medium voltage power equipment.

Sulfur hexafluoride has good electrical insulation properties and arc extinguishing properties. Its electrical strength is 2.5 times that of nitrogen under the same pressure, its breakdown voltage is 2.5 times that of air, and its arc extinguishing ability is 100 times that of air. It is a superior high-voltage insulating dielectric material between air and oil. Sulfur hexafluoride has good insulation properties and arc extinguishing properties, such as circuit breakers, high-voltage transformers, gas-sealed combination capacitors, high-voltage transmission lines, transformers, etc. Electronic-grade high-purity sulfur hexafluoride is a good electronic etchant and is widely used in the field of microelectronics technology. As a refrigerant in the refrigeration industry, the refrigeration range can be between -45°C and 0°C. The electrical industry utilizes its high dielectric strength and arc-extinguishing properties as insulation materials for high-voltage switches, large-capacity transformers, high-voltage cables and gases. Used in the mining industry as a counter-adsorbent to displace oxygen from coal dust in mines. High-purity SF6 is also widely used in metal smelting (such as magnesium alloy melting furnace protective gas), aerospace, medical (X-ray machines, laser machines), meteorology ( Tracer analysis), chemical industry (advanced automobile tires, new fire extinguishers), etc. With the development of today's science and technology, the fields involved in SF6 continue to expand and are widely used in more and more basic fields and scientific and technological fields.