Leaking stoppage method for local leakage of large oil-immersed transformer body

The invention provides a leakage stopping method for local leakage of a large oil-immersed transformer body. The method comprises the following steps of polishing a permeation area until the liquid leaks out of the transformer body, and cleaning the surface of the transformer body in the permeation area by using alcohol; smearing oil absorption powder on the cleaned surface of the transformer body, and determining the leakage points on the surface of the transformer body; flatly cutting the first end of a rubber pipe according to a preset angle and then aligning to the leakage point, smearing sealant around the first end of the rubber pipe, and draining the leakage point through the rubber pipe; after the sealant is completely solidified, folding the second end of the rubber pipe and fastening and locking through a lock catch; and using the sealant for completely covering the rubber tube and adhering to the cured sealant at the first end of the rubber pipe. According to the method, the transformer oil in the