Multifunctional modularized variable-diameter plugging module

The utility model discloses a multifunctional modularized variable-diameter plugging module which comprises a fireproof inner pipe, elastic net bags are fixed to the inner wall and the outer wall of the fireproof inner pipe, and the elastic net bags are filled with water-absorbent resin; the water guide cotton strips are distributed on the outer surface of the elastic net bag on the outer side of the fireproof inner pipe at intervals, and sponge rings are installed at the left end and the right end of each water guide cotton strip; the annular end plates are symmetrically fixed to the left end and the right end of the fireproof inner pipe, and the sponge rings are attached to the end faces, close to the fireproof inner pipe, of the annular end plates; the variable-diameter partition plate is connected to the outer side face of the annular end plate in a sleeving mode. After the water-absorbent resin integrally arranged on the plugging module absorbs water, the volume can be expanded by multiple times, so that