Buffer device of steam inlet of shell-and-tube cooler

The utility model relates to a buffer device of a steam inlet of a shell-and-tube cooler. The buffer device comprises an inlet flange, a straight pipe section, an outer taper pipe, an inner taper pipe and a connecting rib plate, wherein the steam inlet is connected to the outer taper pipe through the inlet flange and the straight pipe section, the inner taper pipe with a small inlet and a large outlet is arranged inside the outer taper pipe, and the inner taper pipe is connected to the inner wall of the outer taper pipe through the connecting rib plate. According to the utility model, the taper pipe with gradually increasing diameter is provided, after steam enters a pipe opening forcefully, the speed is gradually reduced, and the steam more uniformly enters inside the a shell pass of a condenser, the inner taper pipe is provided, the function of protecting the baffle plate is played, and the scouring of steam to the heat exchange pipe is lowered.