Inner duct transformer

Abstract

The invention discloses an inner air guide tube type transformer, which includes an oil tank with an iron core inside and filled with transformer oil, and is characterized in that it also includes a heat dissipation pipe, the heat dissipation pipe is provided with an inner pipe, and an outer pipe is sheathed outside the inner pipe. There is a gap between the wall of the inner tube and the wall of the outer tube to form an annular flow channel. The ends of the inner and outer tubes are blocked. The lower end of the pipe is connected with a lower communication pipe communicating with the annular flow channel, the upper communication pipe communicates with the upper part of the inner space of the fuel tank, and the lower communication pipe communicates with the lower part of the inner space of the fuel tank; the air in the inner pipe of the present invention rises when heated and flows out from the upper opening to form a Strong convection, large heat dissipation area, and the inner tube is less affected by the temperature rise of light, which improves the heat dissipation efficiency and stabilizes the heat dissipation efficiency.

Description

technical field [0001] The invention relates to an equipment transformer in the electric power industry, in particular to an inner air guide tube type transformer. Background technique [0002] my country has a vast territory and a dense power transmission network. Transformers are needed at the end of the network to convert voltage. Heat is generated during the working process of the transformer. Too high temperature will affect the efficiency of voltage conversion and increase the loss. Therefore, the design of the transformer attaches great importance to the heat dissipation performance. Existing transformers generally use heat dissipation pipes. The heat dissipation pipes are made of The exposed hollow tube made of a good thermal conductor, the upper and lower ends are respectively connected with the upper and lower parts of the inner space of the transformer oil tank to form a circulation loop. The heat dissipation tubes of this structure dissipate heat into the air by ...

AI Technical Summary

Problems solved by technology

Heat is generated during the working process of the transformer. Too high temperature will affect the efficiency of voltage conversion and increase the loss. Therefore, the design of the transformer attaches great importance to the heat dissipation performance. Existing transformers generally use heat dissipation pipes. The heat dissipation pipes are made of The exposed hollow tube made of a good thermal conductor, the upper and lower ends are respectively connected with the upper and lower parts of the inner space of the transformer oil tank to form a circulation loop. The heat dissipation tubes of this structure dissipate heat into the air by direct contact with the air. The fluidity of the air is crucial to its radiation efficiency. When there is no wind, this structure cannot form a large convection, so the heat dissipation efficiency is low, especially in the case of direct sunlight, the facing surface of the heat dissipation pipe absorbs solar energy and dissipates the heat. Transferred to the backlight surface, the body temperature of the heat dissipation pipe under the light is much higher than the outside air temperature, which is not conducive to the cooling of the transformer oil, and these still need to be solved technically

Images