Air-cooled oil-immersed power transformer

Abstract

The invention provides an air-cooled oil-immersed power transformer, which comprises a transformer body, wherein the lower end of the transformer body is provided with an installation support, the side surface of the transformer body is provided with a plurality of radiators, the radiators are externally provided with a fan array, and the fan array covers all or part of the end faces of the radiators. The silent axial flow fans are small in size and installed on four sides of a transformer after forming the fan array, the transformer is small in size change, and the heat exchange is carried out in a large-area and uniform manner, so that the operation temperature of the transformer is effectively reduced, the overload capacity of the transformer is improved, the service life of the transformer is prolonged, and the like.

Description

technical field [0001] The invention relates to an air-cooled oil-immersed power transformer. Background technique [0002] The circulation path of the transformer oil inside the transformer box is that the hot oil on the upper part of the transformer body enters the radiator from the oil inlet above the radiator, and gradually dissipates heat in the radiator. As the temperature of the transformer oil decreases, the density of the transformer oil gradually increases. Large, the transformer oil flows slowly from top to bottom in the radiator, to the oil return port under the radiator, and then flows back to the lower part of the transformer box. The temperature of the transformer in the lower part of the transformer body is lower. Transformer windings and iron cores gain heat, and as the temperature gradually increases, the density gradually decreases, and the low-density transformer oil moves upwards, from the lower part of the transformer box to the upper part of the transf...

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Problems solved by technology

[0003] For example, the publication number is CN201796683U, a large-scale oil-immersed power transformer with multiple cooling methods cools down the heat sink of the transformer by the air cooler, but its oil pump and temperature control box are all installed outside the transformer. Holes are opened on the top and the circulation pipe is welded, so the volume of the transformer increases, and oil leakage is prone to occur at the weld during the subsequent operation of the transformer

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