Oil-immersed transformer

The invention relates to an oil-immersed transformer, and belongs to the field of transformers. The transformer comprises an oil tank, an iron core and a winding, the iron core and the winding are mounted in the oil tank, the oil tank is filled with transformer oil, a radiator assembly is mounted on the outer side of the oil tank and comprises a radiating fin group, and the radiating fin group comprises a plurality of radiating fins, a converging strip for fixing the radiating fins, an oil inlet pipe and an oil outlet pipe. The cooling fins are hollow and vertically arranged, one end of the oil inlet pipe is communicated with the upper ends of the cooling fins, the other end of the oil inlet pipe is communicated with the upper portion of the oil tank, one end of the oil outlet pipe is communicated with the lower ends of the cooling fins, and the other end of the oil outlet pipe is communicated with the lower portion of the oil tank. The end, communicated with the cooling fins, of the oil inlet pipe is bent do