COOLING METHOD AND APPARATUS FOR FORCED-DIRECTED COOLING MIXING TYPE TRANSFORMER WINDING

摘要

A cooling method and apparatus for a forced-directed cooling mixing type transformer winding. A primary winding (4), a secondary winding (3) and an additional winding (2) are arranged by using a concentric winding integrated structure. The apparatus is characterized in that: the additional winding (2) is located on the outer side of an iron core (1); the secondary winding (3) is located on the outer side of the additional winding (2); the primary winding (4) is located on the outer side of the secondary winding (3); and an oil channel is arranged among all the windings, and heat dissipation is performed by forced circulation of directed oil in the oil channel among all the windings. Compared with a winding structure design in the prior art, the winding provided in the present invention is smaller in occupied space and lower in material consumption, and facilitates weight reduction and miniaturization designs for a transformer; and meanwhile, by means of an excellent heat dissipation capability, the size and weight of the transformer are reduced, and it is guaranteed that the transformer operates safely and reliably.