Oil-saving transformer

Abstract

The invention discloses an oil-saving transformer, which belongs to the technical field of a transformation device. The invention has the technical scheme that the oil-saving transformer comprises an oil tank and a high-voltage coil which is coiled at the periphery of a low-voltage coil; and the oil-saving transformer is characterized in that the periphery of the high-voltage coil is also coated with at least one layer of insulation paper, and the inner side of each layer of the insulation paper is provided with a plurality of oil duct struts which are parallel to an axis of the high-voltage coil. Compared with the prior art, according to the oil-saving transformer disclosed by the invention, the distance between the high-voltage coil and the inner wall of the oil tank is shortened, the volume of the oil tank can be reduced, thus transformer oil in the oil tank can be reduced, and the cost can be saved.

Description

technical field [0001] The invention relates to the technical field of transformer equipment, in particular to an oil-saving transformer. Background technique [0002] At present, the high and low voltage coils of oil-immersed transformers with a voltage level of 10KV are mostly layered structures, that is, the high and low voltage coils are wound in one piece, and the high voltage coils are directly wound on the already wound low voltage coils, so that each group (ie Phase-separated) coils are continuously wound into a whole. Since the inside of the high-voltage and low-voltage coils and the oil tank are filled with transformer oil, in order to ensure the insulation performance between the high-voltage coil and the inner wall of the oil tank and the heat dissipation of the high-voltage coil, the high-voltage coil and the oil tank The distance between the inner walls is generally relatively large, generally not less than 35mm, which results in a large volume of the oil tank,...

AI Technical Summary

Problems solved by technology

[0002] At present, the high and low voltage coils of oil-immersed transformers with a voltage level of 10KV are mostly layered structures, that is, the high and low voltage coils are wound in one piece, and the high voltage coils are directly wound on the already wound low voltage coils, so that each group (ie Phase-separated) coils are continuously wound into a whole. Since the inside of the high-voltage and low-voltage coils and the oil tank are filled with transformer oil, in order to ensure the insulation performance between the high-voltage coil and the inner wall of the oil tank and the heat dissipation of the high-voltage coil, the high-voltage coil and the oil tank The distance between the inner walls is generally relatively large, generally not less than 35mm, which results in a large volume of the oil tank, a lot of transformer oil inside, and high cost

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