Fireproof plugging device for multi-pipeline mixed structure tube well

A multi-pipeline mixed structure tube well fireproof plugging device comprises a plurality of steel beams, a closed space is formed between the steel beams, a plurality of vertical pipes are arranged in the closed space, the closed space is divided into a first area and a second area by the vertical pipes, and the outer walls of the vertical pipes are further sleeved with casing pipes; the steel beam comprises flange plates at the upper end and the lower end, angle steel is installed at the bottom of the flange plate at the upper end, a first riffled plate is installed between the angle steel on one side and the sleeve and located in a first area, and a second riffled plate is installed between the angle steel on the other side and the sleeve and located in a second area and located in a third area. According to the fireproof plugging device, the checkered steel plates and the angle steel are connected in a welded mode to complete fireproof plugging of the pipeline shaft, a formwork does not need to be erecte