Evaporative cooling power transformer

Abstract

The invention relates to an evaporative cooling power transformer. The evaporative cooling power transformer comprises a closed box body, a transformer body and an on-load tap changer arranged in the box body, an evaporative cooling insulating medium contained in the box body, and multiple high-pressure sleeves and multiple low-pressure sleeves arranged on the box body, wherein the transformer body and the on-load tap changer are submerged in the evaporative cooling insulating medium; the transformer further comprises a constant pressure box which is used for controlling the steam pressure in the box body; the constant pressure box is arranged above the box body; the constant pressure box is communicated with the high-pressure sleeves through corrugated pipes, and the multiple high-pressure sleeves are communicated with one another through corrugated pipes. Through additionally arranging the constant pressure box to match the evaporative cooling insulating medium, the steam pressure in the box body of the transformer is controlled, and the normal running of the transformer is guaranteed.

Description

technical field [0001] The invention relates to the field of power equipment, in particular to an evaporative cooling power transformer. Background technique [0002] At present, oil-immersed power transformers are mainly used in power transformer products with two voltage levels of 110kV and 220kV. The cooling medium of oil-immersed power transformer is transformer oil or high-temperature resistant oil. The volume of transformer oil changes with the oil temperature. Usually, it is necessary to set up an oil conservator to cooperate with the on-load tap-changer of the transformer to play the role of oil storage and replenishment. The role of oil. In addition, the traditional large-capacity oil-immersed transformer has a large amount of oil. Once the internal temperature exceeds the ignition point due to a fault and encounters an open flame, it will cause a fire, which poses a serious threat to the safety of high-rise buildings and people's lives and property. Therefore, oi...

AI Technical Summary

Problems solved by technology

In addition, the traditional large-capacity oil-immersed transformer has a large amount of oil. Once the internal temperature exceeds the ignition point due to a fault and encounters an open flame, it will cause a fire, which poses a serious threat to the safety of high-rise buildings and people's lives and property.

Therefore, oil-immersed transformers should not be used in places with high fire protection requirements.

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