Device for vacuum test of storage tank bottom plate

The utility model belongs to the technical field of storage tank installation and pressure vessel manufacturing engineering construction, and particularly relates to a device for a vacuum test of a storage tank bottom plate, which comprises a sealing plate, a vacuum generator, a vacuum meter, an emptying valve and a rubber sponge for sealing the sealing plate, a first through hole, a second through hole and a third through hole are formed in the sealing plate; the vacuum generator, the vacuum meter and the emptying valve are installed at the first through hole, the second through hole and the third through hole respectively, and the rubber sponge is fixedly connected with the bottom of the sealing plate. An air bag is arranged on the edge of the sealing plate, a plurality of balls are arranged in the air bag, and the air bag communicates with an air pump. According to the scheme, compressed air is used for vacuumizing, and equipment is light, easy to carry and low in cost; the rubber sponge and the bottom pla