Reinforcing and connecting device for fireproof thermal insulation layer of air cooling pipeline

A reinforcing and connecting device for a fireproof heat preservation layer of an air cooling pipeline comprises the air cooling pipeline installed at the indoor top through a hanging bracket, and is characterized in that a plurality of welding studs are evenly arranged on the surface of the air cooling pipeline, a first conical boss is arranged at the outer end of each welding stud, and the surface of the air cooling pipeline is covered with a heat preservation layer; the surface of the heat preservation layer is covered with a fireproof layer, the heat preservation layer and the fireproof layer are both punctured by welding studs, the outer end of each welding stud is sleeved with a first pressing piece, a round hole is formed in the middle of each first pressing piece, a plurality of kerfs are evenly distributed around each round hole in the radial direction, and the round holes pass through the first conical bosses to be pressed on the surface of the fireproof layer. According to the utility model, the pr