Oil way structure of transformer

Abstract

The invention discloses an oil way structure of a transformer. The oil way structure comprises a plurality of coils and wire cakes, wherein the coils and the wire cakes are sequentially arranged fromtop to bottom; oil baffles are arranged between the coils and the wire cakes; the oil baffles are arranged in a left-right alternating mode, so an S-shaped oil way is formed on the coils and the wirecakes; a first oil duct and a second oil duct are sequentially arranged on the inner sides of the coils and the inner sides of the wire cakes; a third oil duct and a fourth oil duct are sequentially arranged on the outer sides of the coils and the outer sides of the wire cakes; the first oil duct is divided into a lower first oil duct body and an upper first oil duct body, and the lower first oilduct body and the upper first oil duct body do not communicate with each other; and the third oil duct is divided into a lower third oil duct body and an upper third oil duct body. According to the invention, the oil way structure can effectively overcome the problems that since the insulation oil of an existing oil way structure flows through the whole coils, oil at the upper parts of the coils is heated by oil at the lower parts, oil temperature rises, and the heat dissipation, insulation life and operation safety of upper wire cakes are influenced.

Description

technical field [0001] The invention relates to the technical field of oil-immersed power transformers, in particular to a transformer oil circuit structure. Background technique [0002] With the development of the economy, the capacity of the transformer is required to be larger and larger, and the loss is also increased with the increase of the capacity, and the temperature rise control of the transformer coil is becoming more and more difficult. The oil-immersed transformer coil is cooled by insulating oil. When the insulating oil flows through the insulating oil channel, it exchanges heat with the transformer coil to take away the heat of the transformer coil. However, the insulating oil in the existing oil circuit structure flows through the entire coil, causing the oil in the upper part of the coil to be heated by the lower part, and the oil temperature has risen, which not only affects the heat dissipation of the upper part of the wire cake, but also affects the insu...

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Problems solved by technology

[0003] In view of the above technical problems, the present invention provides a transformer oil circuit structure, which can effectively solve the problem that the insulating oil in the existing oil circuit structure flows through the entire coil, causing the oil in the upper part of the coil to be heated by the lower part, and the oil temperature has risen, which affects the upper part. The heat dissipation of the wire cake, the insulation life and the safety of operation

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