Main-transformation heat-dissipating device with SF6 (sulfur hexafluoride) as refrigerant medium and heat-dissipating method

Abstract

The invention relates to a main-transformation heat-dissipating device with SF6 (sulfur hexafluoride) as a refrigerant medium and a heat-dissipating method. The main-transformation heat-dissipating device consists of a transformer oil flow circulating system and an SF6 refrigerant medium circulating system, wherein the transformer oil flow circulating system comprises a main-transformation body, an oil pump, and a transformer oil flow passage of an SF6 evaporator; the main-transformation body is filled with transformer oil for cooling a coil and an iron core; a cold oil inlet is formed in the upper part of the main-transformation body; a hot oil outlet is formed in the lower part of the main-transformation body; the oil pump conveys hot transformer oil from the hot oil outlet to an inlet of the transformer oil flow passage of the SF6 evaporator; the hot transformer oil is cooled by an SF6 refrigerant inside the SF6 refrigerant circulating system and around the transformer oil flow passage, and flows from an outlet of the transformer oil flow passage of the SF6 evaporator to the cold oil inlet. The main-transformation heat-dissipating device has huge advantages of safety, reliability, high cooling efficiency, small equipment volume, low oil consumption, less maintenance, economical overall operation and the like, and is a revolutionary innovation of a main-transformation cooling way.

Description

technical field [0001] The present invention relates to a kind of SF 6 A heat dissipation device and method for a main transformer with a cold medium. Background technique [0002] During the operation of the main transformer, due to the action of electricity and magnetism, its coil and iron core will generate heat. If the heat cannot be taken away in time, it will cause serious accidents such as burning or even explosion of the main transformer. The transformer oil flows to cool the coil and iron core, and the heat taken away by the transformer oil flow needs to be exchanged through the cooling device, and the cooled cold oil flow enters the main transformer body for cooling. Traditional main transformer cooling methods mainly include forced air cooling, natural air cooling and water cooling. Although water cooling is economical and efficient, if cooling water leaks into the main transformer in the cooling system, even if it is a small leak, It will lead to serious conseq...

AI Technical Summary

Problems solved by technology

Traditional main transformer cooling methods mainly include forced air cooling, natural air cooling and water cooling. Although water cooling is economical and efficient, if cooling water leaks into the main transformer in the cooling system, even if it is a small leak, It will lead to serious consequences; due to the low heat enthalpy of the air, the cooling efficiency of the main transformer is low, the manufacturing volume of the main transformer and radiator equipment is large, the oil consumption is large, the operating cost is high, and the maintenance amount is large, etc.

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