Spray type evaporation and cooling transformer

Abstract

Present invention relates to a spray type vapour-cooled transformer consisting of iron core, loop, oil tank, gaseous pump less self circulation cooling system and liquid circulatory system. Gaseous pump free self circulation cooling system is composed of wind bore, condensator and liquid return pipe, wherein wind bore upside connected with condensator, condensator bottom connected with liquid return pipe. Liquid spray circulatory system is composed of spray conduit, liquid guide plate and pump. Oil tank bottom is filled with liquid state heat-eliminating medium whose upper side is filled with insulation gaseous. For high-voltage transformer, oil tank bottom can hold resistor connected with standby heating power supply, or setting supercharging device outside the oil tank, or properly increasing initial predetermined insulation air pressure in transformer.

Description

technical field [0001] The invention relates to a transformer, in particular to a spray type evaporative cooling transformer. Background technique [0002] At present, the cooling methods used by most transformers are air cooling, water cooling, oil cooling, etc. As the capacity continues to increase, the disadvantages of the above cooling methods are becoming more and more obvious. Evaporative cooling technology (also known as phase change cooling technology, boiling heat exchange technology, etc.) is a major improvement on the above cooling methods, which can make the transformer The operating temperature is greatly reduced, and the economy and safety are significantly improved. [0003] The evaporative cooling power transformer proposed by the utility model patent with the application number 99237863.x and the new evaporative cooling transformer proposed by the utility model patent with the application number 98200236.x both use fluorine compounds as the cooling medium, ...

AI Technical Summary

Problems solved by technology

However, both the gas cooling circulation system and the liquid spray circulation system need to be driven by pumps, and the insulating gas used is only SF 6 , the GWP value of this gas is 23900, which is a non-environmental medium, and the fluorocarbons used are only C 8 f 16 O and C 8 f 18 Two, and for high-voltage transformers working at very low ambient temperature and small load, there is a problem that the absorption coil heat is not enough during the liquid medium spraying process, so that the amount of gaseous medium produced is too small to affect insulation

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