An overlapping heat exchanger

Abstract

The utility model relates to heat exchanger technical field discloses a kind of overlapping heat exchanger, including two heat exchangers of upper and lower series arrangement, the pipe passage of heat exchanger includes pipe box and tube bundle, shell passage includes shell, the pipe passage of two heat exchangers is sequentially communicated, the shell passage of two heat exchangers is sequentially communicated;Wherein the support seat and sliding support of heat exchanger on upper side are equipped, the support seat and fixed support of heat exchanger below are equipped, support seat fixed connection between two heat exchangers, the fixed support of heat exchanger below is fixed with the movable disc with displacement compensation capacity, the sliding support of heat exchanger on upper side is supported on movable disc.The overlapping heat exchanger of the utility model, pipe passage medium is run through the heat exchange of two groups of tube bundle in equipment interior, so that the flow of pipe passage medium is longer, temperature difference stress produced by pipe passage tube bundle and shell passage shell can be effectively released;Pipe passage, shell passage form convection flow, heat exchange efficiency is higher, and heat loss is small.

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