Superconductive turbulent flow tube and heat exchange device

The utility model relates to an air preheater used for an industrial boiler, in particular to a superconductive turbulent flow tube and a heat exchange device. The superconductive turbulent flow tube comprises a tube shell, wherein a turbulent flow piece and a working medium are arranged in the tube shell, and the outer side of the tube shell is provided with fins and a boundary block. The heat exchange device comprises a shell, wherein the upper part and the lower part in the shell are both welded with an upper fixing plate and a lower fixing plate; a sealing partition plate is welded in the middle in the shell; and the superconductive turbulent flow tube is fixed between the upper fixing plate and the lower fixing plate and welded with the sealing partition plate through the boundary block. According to the utility model, the purposes of high heat transfer efficiency, long service life, compact structure, and capabilities of preventing low-temperature corrosion and caking dust stratification are achieved, a