| 摘要 |
FIELD: power engineering.SUBSTANCE: method to install a modular multipass heat exchanger includes installation of heat exchange modules with heat exchange tubes, by installation of heat exchange tubes, at least in two rows on a rectangular tube sheet and their closure by covering walls, headers of coolant supply and drain and at least one storage tank between two adjacent rows of heat exchange tubes. Tubes are installed in one plane. And installation of heat exchange modules with heat exchange tubes on a support frame by means of serial installation of heat exchange modules on it and connection of heat exchange modules with the help of covering walls at the side of the annular space by links. Preliminary shop installation of the heat exchanger is carried out. Heat exchange modules are installed on the support frame one after another in series in a horizontal plane. On the first heat exchange module and the support frame they mount aligning units for subsequent orientation of the first heat exchange module on the support frame in process of installation on the facility. Then the second heat exchange module is joined to the first heat exchange module. Flanged inserts are mounted on the first heat exchange module, through welding to end walls of the headers of coolant supply and drain, and a link in the form of a rectangular metal strip. Links are welded to the covering wall. On the second heat exchange module and the support frame they mount aligning units. And further, until the preliminary installation of the heat exchanger on the support frame is not completed. In case of final installation on the facility, the heat exchange modules are installed on the support frame one after another in series in the horizontal plane with fixation in aligning units. Flanges units of the previous heat exchange module are welded to the end walls of the following heat exchange module, forming a cavity of the working coolant. Links of the previous heat exchange module are welded to the end walls of the following heat exchange module, forming a cavity of the working coolant. Then bases of heat exchange modules are welded to the support frame.EFFECT: invention makes it possible to reduce labour intensiveness and to simplify installation of a modular multipass heat exchanger.7 cl, 6 dwg |
