MULTITUBULAR HEAT EXCHANGER

摘要

A multitubular heat exchanger (100), comprising at least a can body (1), tube plates (2, 21), and heat exchanger tubes (3). The can body (1) forms an outer shell of hollow structure, and the tube plates (2, 21) are fitted to both end parts thereof. The heat exchanger tubes (3) are formed of multiple pieces of tubes, and installed so that one end part of each of the plurality of heat exchanger tubes is inserted into one of a plurality of opening parts (25) formed in at least one of the tube plates (2, 21). The insertion part of the heat exchanger tube (3) into the opening part (25) is characterized in that it is welded at both end two positions along the outer periphery of the heat exchange tube (3) to connect to the tube plates (2, 21) forming the opening part (25).