Problems in the segmented design of heat exchanger cylinders
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Since the middle section of the heat exchanger’s shell side is thicker due to the reinforcement sections at the lugs, while the cylinder walls near the tube sheet ends have normal thickness, is it necessary to perform segmented calculations for the cylinder?
As the thickness of the cylinder increases, its stiffness rises, which affects the stiffness ratio and in turn influences the thickness of the tube sheet. If the difference is small, it is possible to slightly increase the tolerance for the tube sheet thickness; however, if the difference is significant, corrections are still necessary. GB/T151 provides clear guidelines on this matter
So how do I enter SW6? SW6 is the thickening of the shell at the tube sheet, while I use thickening in the middle section.
It is not recommended to install lifting lugs on the shell of the heat exchanger; lifting equipment can be used, and the locking devices should be placed at the supports.
Calculate the stiffness of the cylinder section by section, and then determine the cylinder with a uniform wall thickness that has the same stiffness. Subsequently, use this in SW6 for simulation calculations to ensure that the stiffness ratio matches the actual value; the thickness of the tube sheet should also be checked. It’s not necessary to prepare a calculation report, but this check should still be carried out
Cylindrical segmentation calculations are necessary, as the thickness of different sections varies, which affects the pressure-bearing capacity of the cylinder and the stability of the overall structure. .
For a 200-ton heat exchanger, what kind of tooling is needed? Are there any relevant materials available for study?
In SW6, the end cylinders are thin while the middle cylinders are thick; just follow the actual conditions
Calculating in segments isn’t troublesome either; you can enter a few more pieces of data