Environment-friendly mixed gas mutual inductor

Abstract

The invention provides an environment-friendly mixed gas mutual inductor which comprises a shell. A primary conductive tube, an inner shielding cylinder with a secondary winding and an outer shielding cylinder are arranged in the shell. The outer shielding cylinder is connected with a base outside the shell through a lead shielding cylinder, and an insulator sleeves the lead shielding cylinder; the shell and the insulator are filled with an environment-friendly dielectric medium, and the environment-friendly dielectric medium is formed by mixing 2%-15% of C5F10O, buffer gas and 2%-8% of O2. The surface of a metal part through which a main current passes is plated with silver, so that the good conductivity of the metal part is ensured, and other metal surfaces in contact with an environment-friendly dielectric medium are plated with aluminum or made of aluminum alloy so as to isolate C5F10O and metal parts with poor compatibility with C5F10O, so that the problem of poor compatibility of a traditional metal material and an environment-friendly electrolyte is solved; the surface of the rubber sealing ring is coated with silicone grease, and the inner wall, in contact with the environment-friendly dielectric medium, in the insulator is coated with metal fluorocarbon paint for protection, so that the problem of poor compatibility is solved, and sealing is guaranteed.

Description

Technical field [0001] The present invention relates to the technical field of power insulating equipment, and more particularly to an environmentally friendly mixed gas transformer. Background technique [0002] Power transformers are the most important protection and measurement equipment in power systems, in high pressure, ultra high pressure and high pressure fields in sf 6 Transformers for insulating media account for an absolute dominant position. However, sf 6 Gas is to date industrial gases with the strongest greenhouse effect, and global warming potential, GWP is CO 2 23900 times, and the atmospheric life is up to 3200 years. In order to actively respond to the threat of global warming to people's living environment, my country's government proposes that "Carbon Dioxide emissions strive to achieve peaks of 2030 years ago, strive to achieve carbon neutrality" 2060, February 1, 2021, my country The emission transaction system is officially put into operation. Looking for a...

AI Technical Summary

Problems solved by technology

However, for C 5 f 10 O The research on mixed gases has just started, C 5 f 10 The application of O mixed gas in electrical equipment such as power transformers urgently needs to clarify the following two issues: (1) Clarify C 5 f 10 Which buffer gases with lower liquefaction temperature should be mixed with O, and a mixed configuration scheme is proposed; (2) Preliminary research found that C 5 f 10 O mixed gas will corrode traditional SF 6 Metal copper, rubber and other materials in electrical equipment will cause leakage of insulating medium, reduce the safety reliability and electrical life of electrical equipment, and it is urgent to find modification measures or replacement solutions for corresponding materials

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