Sealing device and sealing method of converter

The invention discloses a sealing device and a sealing method for a converter, and belongs to the technical field of steelmaking converters, the sealing device comprises a converter foundation, a sealing device and a sealing device, the water-cooling inserting plate comprises a plate main body and a fluid inlet and outlet pipe, the plate main body is movably connected to the converter foundation, and the plate main body can seal the channel after a tool is put into the channel; the plate body is provided with a cavity, the fluid inlet and outlet pipe is connected to the plate body and communicated with the cavity, and the fluid inlet and outlet pipe is used for injecting and guiding out cooling liquid. The sealing method comprises the steps that the driver is started to push the water-cooling insertion plate to open the opening, and sealing gas is introduced; after temperature measurement and sampling of the tool are finished, the driver is controlled to pull the water-cooling plugboard to restore the positio