Evaporative cooling underground transformer

Abstract

The invention discloses an evaporative cooling underground transformer comprising a transformer body, a box body for containing the transformer body and cooling liquid arranged in the box body and immersing the transformer body, and the cooling liquid has the non-combustible characteristic and the phase change characteristic and is evaporated into gas after absorbing heat; the evaporative cooling underground transformer further comprises a heat dissipation assembly used for diffusing heat absorbed by the cooling liquid to the outside so as to reduce the temperature of the cooling liquid, the heat dissipation assembly comprises at least one evaporative heat dissipation device, and the cooling liquid absorbs heat to be evaporated into gas and then exchanges heat with the outside through the evaporative heat dissipation device. And the gas is condensed into liquid and the liquid flows back into the box body. The non-combustible effect is achieved by changing an insulating cooling medium of the underground transformer; the evaporation heat dissipation device is arranged, the cooling and heat dissipation efficiency of the underground transformer is improved, effective heat dissipation can be conducted on the transformer in the application environment such as a pit where ventilation is not smooth and heat dissipation is difficult, and the operation safety coefficient of the transformer is improved.

Description

technical field [0001] The invention relates to the technical field of power equipment, in particular to an evaporative cooling underground transformer. Background technique [0002] The currently used underground transformers are usually oil-immersed transformers, and their cooling medium is transformer oil, which is a flammable medium. Since underground transformers are usually installed in closed pits, there is no ventilation, the environment is harsh, and heat dissipation is difficult. When the oil-immersed underground transformer is installed in a closed pit, once the heat is not dissipated in time, the heat will accumulate, which is very easy to cause the danger of fire and combustion, and it is difficult to extinguish the fire. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an evaporative cooling underground transformer for the defects of the prior art. [0004] The technical solution adopted by the pres...

AI Technical Summary

Problems solved by technology

[0002] The currently used underground transformers are usually oil-immersed transformers, and their cooling medium is transformer oil, which is a flammable medium. Since underground transformers are usually installed in closed pits, there is no ventilation, the environment is harsh, and heat dissipation is difficult. When the oil-immersed underground transformer is installed in a closed pit, once the heat is not dissipated in time, the heat will accumulate, which is very easy to cause the danger of fire and combustion, and it is difficult to extinguish the fire

Images