Staggered iron core oil passage structure

Abstract

The invention relates to a staggered iron core oil passage structure. Oil passages are arranged inside a core column, an upper iron yoke and a lower iron yoke of an iron core, and a plurality of laminated paper boards are vertically and straightly placed inside the upper iron yoke and the lower iron yoke; laminated paper boards are alternately adhered onto silicon steel sheets on two sides of the core column in a 45-degree inclination manner inside the core column respectively, the laminated paper boards inside the iron column are arranged in a staggered manner, the directions of the inclination angles of the laminated paper boards adhered to two sides of the iron core are opposite, and the laminated paper boards of the iron column in the middle and the laminated paper boards of the upper iron yoke and the lower iron yoke are staggered at intervals at the joint positions of the iron column and the upper and the lower iron yokes, so that smoothness of the oil passages is guaranteed. The spacing distances among the laminated paper boards are equal. The structure adopts the design of the oil passages with 45-degree inclination angles in a transformer iron core, the oil passages are staggered to form irregularly-shaped oil passages, and finally a vortex oil flow is realized; through the structure, heat inside the transformer iron core in operation can be well taken out, and integral temperature rise of the iron core is effectively reduced. Compared with an ordinary axial or radial oil passage product, the temperature of the iron core can be reduced by more than 3K.

Description

Technical field [0001] The present invention involves the field of oil soaking transformers, and specifically involves a staggered iron core oil duct structure. Background technique [0002] The diameter of high impedance, large capacity, and low -loss products is large, and it is not easy to heat dissipation.The iron core generates losses during the transformer working, the loss is transmitted to the iron core surface inside the iron core stack, and then passed to the transformer oil or air in the form of a convection.The diameter of the small transformer's iron core is small and easy to pass, but the iron core diameter of high impedance and large -capacity transformers is large, the unit area of the unit area is large, and the thermal conduction path is very long. The loss generated by the inside of the iron core may occur.The core is overheated.To this end, cooling the oil channel is set inside the iron core of high impedance and large -capacity transformers.The current oil du...

AI Technical Summary

Problems solved by technology

The current oil passages are generally arranged radially or axially, which has poor heat transfer capability, and the transformer oil flows disorderly in the oil passages, with limited heat dissipation.

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