Why, for the same overall plate + flange connection structure, is the tube sheet much thinner than the equipment flange, while the flange cover and the flange have similar thicknesses?
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Dear teachers, for a structure that is also of the \"whole plate + flange connection\" type, why can the thickness of the tube sheet in the SW6 calculation be much smaller than that of the flanges on the tube box equipment, while the thickness of components such as manhole covers and their associated flanges remains roughly the same?
Many factors need to be considered in the calculation of tube sheets, such as whether the tube bundle provides support for the tube sheet Overall stiffness, etc
The tube sheets and equipment flanges are subjected to different pressures, operating conditions, and stress states. The tube sheet serves as a key component in devices such as heat exchangers, enabling the flow of fluids and heat exchange; its design thickness is primarily determined by the pressure of the fluids inside it, and it can be relatively thin as long as the requirements for heat exchange efficiency are met. Equipment flanges are components used to connect pipes or containers; it is necessary to ensure the sealing integrity and mechanical strength of the connections, which often requires thicker materials to withstand higher bolt loads and maintain structural stability. The manhole flange cover and the accompanying flange have similar thicknesses because they typically need to withstand the same operating pressures and environmental conditions, and they also require good sealing performance; therefore, their design standards and functional requirements are quite similar. .