Three-dimensional wound core distribution transformer oil tank with spiral flow guiding and zoned cooling fins

Abstract

This invention discloses a three-dimensional wound core distribution transformer oil tank with spiral flow guiding and zoned cooling fins, including an oil tank body, an oil conservator, a three-dimensional wound core body, multiple windings, two cooling fin groups, a forced air cooling device, and an oil tank base. The multiple windings are respectively mounted on multiple columns of the three-dimensional wound core body, which is fixedly installed on the oil tank base. This invention significantly extends the flow path of transformer oil in the winding area by constructing spiral flow guiding channels inside the windings. Combined with the tip-oriented design of the teardrop-shaped flow guiding blocks, it effectively guides the oil to flow along a predetermined path, avoiding the stable eddy current phenomenon easily formed in traditional vertical oil channels, thereby improving cooling uniformity. The through holes and interlayer spacers on the support bars are arranged alternately, providing auxiliary channels for lateral flow of oil while maintaining the strength of the insulation structure, promoting heat exchange and mixing of the oil between layers, and preventing localized overheating.

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