大型超长型热交换器制造

Special Manufacturing of Large and Super-long Heat Exchanger

大型、超长型热交换器经常处于高温高压的工况,换热管长而且细,管板厚度大,管子与管板的连接较为困难。同时,换热管束质量大、长度长且刚性差,管束安装难度很大。重点介绍了大型、超长型热交换器管子与管板连接、管束安装及主要部件的制造要点和难点,制造的设备满足相关的技术要求。

Large and super-long heat exchangers are high temperature and high pressure work condition.The heat exchange tubes are long and thin.Thickness of tube-sheet is large.So the connection of tubes and tube-sheet will be great manufacturing difficulties.Meanwhile,the pipe bundle is heavy,long and poor rigidity.Then it is difficult to install the pipe bundle.The connection of tubes and tube-sheet,installation of pipe bundle and manufacture of main parts and specification for equipment fabrication are introduced.