Heat-conducting cylinder assembly and heat exchanger

The utility model discloses a heat conduction cylinder assembly and a heat exchanger. The device comprises a plurality of heat-conducting fins and a central screw rod, a plurality of limiting nuts arearranged on the central screw rod; a limiting ring is arranged on each limiting nut; the limiting ring is inserted into the heat-conducting fin; a pressing ring is placed on the limiting ring; the pressing ring is used for positioning and fixing the heat-conducting fin through a pressing nut; the corrosion resistance and the heat transfer performance of the heat conduction cylinder assembly are greatly improved, the heat conduction cylinder assembly is detachably installed in the cylinder body and can be detached for maintenance, the service life of the heat exchanger is greatly prolonged, the internal structure is compact, the heat transfer performance reaches the theoretical calculation level, the temperature rising time is shortened, and the effects of saving energy and reducing consumption are achieved. The u