Transformer oil tank

The utility model relates to a transformer oil tank. A cross section of a tank body wall of the oil tank is wave-shaped, and the wave shape is formed by connecting each section of arcs sequentially. The transformer oil tank saves the welding working hours and the cost, reduces the labor intensity and dead weight of the tank body, and has simple structure; by means of the wave-shaped tank body wall, on one hand, the intensity of the tank body wall is enhanced, on the other hand, the surficial area of the tank body wall is increased, the heat dissipation efficiency is improved, and the use of cooling fins is saved; and simultaneously, the wave-shaped tank body wall further reduces the noise generated by the transformer during working.