Transformer heat dissipation shell

The utility model relates to the technical field of transformers, in particular to a transformer heat dissipation shell which comprises a shell body, an exhaust port penetrating through an outer shell of the shell body is formed in the front wall of the shell body, a cavity is formed in the shell body, a transformer is fixedly connected in the cavity, a fan shell body is fixedly connected to the rear wall of the shell body, and a fan cavity penetrating through the rear wall of the fan shell body is formed in the rear wall of the cavity. A heat dissipation mechanism capable of conducting heat dissipation on the transformer is arranged in the shell, a first supporting column and a second supporting column are fixedly connected to the front wall of the shell, and the first supporting column and the second supporting column communicate with the cavity; when heat dissipation is needed, the fan can be started, water cannot enter the interior by means of the angle of the top wall under the conditions of raining or w