Environment-friendly sealed insulating ring main unit

The utility model belongs to the technical field of ring main units, and particularly relates to an environment-friendly sealed insulating ring main unit, which comprises a cabinet body, an inner layer and an air duct, and is characterized in that the cabinet body and the inner layer are arranged in a split type structure, and the air duct is arranged between the inner layer and the cabinet body, so that the cabinet body and the inner layer can be separated by the air duct, and the air duct wraps the edge of the inner layer. An air opening is formed in the top of the inner layer, and the air channel extends to the air opening. The cabinet body and the inner layer are arranged in a split mode when the fan rotates, so that dust can be directly intercepted in the air channel, airflow can be blown into a mechanism chamber from an air opening along the edges of the air channel and the inner layer, the purpose of air-dust separation is achieved, the surface temperature of the inner layer wall can be reduced along w