Method for relieving vacuum of transformer

The invention belongs to the technical field of vacuumizing, and relates to a method for relieving vacuum of a transformer, which is used for dust removal and dehumidification in the process of relieving vacuum of a transformer body, and comprises a moisture absorption drying barrel with a sealing structure, and an air guide pipe with a ventilation structure is fixedly mounted in the center of the moisture absorption drying barrel; the two ends of the air guide pipe are fixedly communicated with the two ends of the moisture absorption drying barrel in a sealed mode, drying agents are filled between the outer wall of the air guide pipe and the inner wall of the moisture absorption drying barrel, and the two ends of the air guide pipe are fixedly communicated with the first air filtering mechanism and the second air filtering mechanism in a sealed mode. External air is filtered for the first time through the first air filtering mechanism, air moisture, carbon dioxide and the like are adsorbed through the drying