Spiral tube circulating cooling transformer

Abstract

The invention discloses a helical tube high-elevation cycle cooling transformer, which comprises a transformer tank, a cooling pipe and an expansion tank, wherein the expansion tank is connected to the transformer tank through a bracket; the expansion tank is higher than the position of the transformer tank; the helical tube high-elevation cycle cooling transformer is characterized in that a lower groove, a middle frame and an upper cover are formed in and arranged on the expansion tank; an outer edge is arranged on the lower groove; the middle frame is a frame which are open in upper part and lower part and is surrounded by side surfaces; an extending lower edge which is flush with the outer edge is arranged at the lower part of the middle frame; an extending upper edge which is flush with the edge of the upper cover is arranged at the upper part of the middle frame; the cooling pipe is divided into an ascending pipe and a descending pipe; an upper space of the transformer tank is communicated with an internal space of the lower groove through the ascending pipe; and a lower space of the transformer tank is communicated with the internal space of the lower groove through the descending pipe. A cored winding fully works in a relatively low temperature environment, so that the work efficiency is improved.

Description

technical field [0001] The invention relates to an equipment transformer in the electric power industry, in particular to a spiral tube type circulating heat dissipation 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, and the heat dissipation pipes are divided into upper and lower parts. The terminals are respectively connected with the upper and lower parts of the inner space of the transformer oil tank to form a circulation loop. The entire circulation loop does not exceed the height of the transformer oil tank. The densit...

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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, and the heat dissipation pipes are divided into upper and lower parts. The terminals are respectively connected with the upper and lower parts of the inner space of the transformer oil tank to form a circulation loop. The entire circulation loop does not exceed the height of the transformer oil tank. The density of transformer oil at different temperatures is different. The oil temperature of the transformer oil in the entire circulation loop is layer by layer from top to bottom. In other words, the temperature of the upper layer is higher than that of the lower layer, and the distance between the existing transformer iron core winding and the upper cover of the transformer oil tank is relatively small, so that some iron core windings will still be immersed in the oil layer with a higher temperature, which will affect heat dissipation and influence Work efficiency, these are still to be solved by technology

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