Strength calculation of flanged end caps
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For the fixed tube sheet heat exchangers in our company, the usual design involves using the tube sheet as both a flange and a water chamber flange, which are connected together with bolts. Now we want to eliminate the water chamber flange and instead use a flanged end cap that is directly bolted to the tube sheet. How should the strength of such a flanged end cap and the number of bolts required be calculated? There are no guidelines for calculating flanged end caps in SW6.
GB150.3-2011 provides relevant information on such flanged end caps with flanges. The original poster can take a closer look.
The flanged end section serves as a flange; the thickness of such a flange is likely to be around 6-10 mm, and it’s definitely not possible to use SW6 calculations for such a flange. The only reliable approach is to use this flange on the water side; tolerance specifications don’t matter in that case. So it’s sufficient to calculate the area and spacing of the bolts, as well as the dimensions of the sealing surfaces. There’s no need to calculate anything related to the flange itself, as it can’t be accurately determined in any case
However, when calculating the tube sheet in SW6, it is necessary to first calculate the water chamber flanges before determining the strength of the tube sheet. Although the clearance on the tube side is not taken into account, the tube sheet is the main pressure-bearing component, so this clearance needs to be carefully examined. How can this problem be solved?
Thank you, I’ve found it – it’s the convex head with flanges. I’ll first examine the standards in detail and consult you if I have any questions
When calculating the tube sheet, the flange data that needs to be entered depends on the structure of the tube sheet and the flange. If the tube sheet also serves as a flange, then the tube sheet can be calculated based on the flange located on it.