Oil tank structure of power transformer

The utility model discloses a power transformer oil tank structure which comprises a transformer oil tank, a first guide rail set and a second guide rail set are locked on the opposite side walls of the transformer oil tank through screws, and a left positioning seat and a right positioning seat which are matched with each other are installed on the first guide rail set and the second guide rail set in a sliding mode. Damping fins are adhered to the opposite sides of the left positioning seat and the right positioning seat, and elastic damping parts are arranged at the two ends of the bottom of the transformer oil tank. The positioning device has the advantages that four positioning seats are arranged in the transformer oil tank through the first guide rail set and the second guide rail set, and four positioning points are formed. When the transformer is embedded into the transformer oil tank, the two sides of the transformer are clamped through four positioning seats arranged in the transformer oil tank thro