Self-circulation drying device in high-voltage switch cabinet

The utility model relates to a self-circulation drying device in a high-voltage switch cabinet, and belongs to the technical field of ventilation drying equipment. Comprising a switch cabinet body, a circulating drying module, a power module and a control module. A first bus chamber and a second bus chamber are arranged in the switch cabinet body, a cabinet penetrating sleeve is arranged between the first bus chamber and the second bus chamber, and two ends of the cabinet penetrating sleeve are respectively communicated with the first bus chamber and the second bus chamber; the circulating drying module comprises a box body, the two ends of the box body are communicated with connecting pipes respectively, the ends, away from the box body, of the two connecting pipes are communicated with the first bus chamber and the second bus chamber respectively, a negative pressure fan and a drying box are fixedly arranged in the box body, and the negative pressure fan is arranged on one side of the drying box; the power