Q345R 16Mn 16MnIII heat exchanger tube sheet manufacturers

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U-shaped expansion joints are commonly used in fixed-tube-sheet heat exchangers, offering advantages such as a compact and simple structure, good compensation performance, and low cost. Contact person: Manager Wang, 15076801731. As chemical processing equipment and power plants become larger, the diameter of their tube sheets also increases; tube sheets with a diameter of 4m–5m are quite common. Large tube sheets are characterized by a large number of tubes, which are closely spaced together; the tube holes are small and deep, and high requirements are placed on precision and surface finish. In the calculations for fixed tube sheets, the axial stress of the shell, the axial stress of the heat exchange tubes, and the pulling force q between the heat exchange tubes and the tube sheet are determined under various operating conditions with temperature differences. If any of these values fails to meet the strength (or stability) requirements, it is necessary to install expansion joints. In the strength verification calculations for fixed tube sheets, once the thickness of the tube sheet is determined, if no expansion joints are used, the strength of the tube sheet may be insufficient; however, by installing expansion joints, the required thickness for the tube sheet can be achieved. At this time, expansion joints can also be installed to thin the tube sheet, but a comprehensive evaluation based on material consumption, manufacturing difficulty, safety, and economic efficiency must be conducted.