Questions regarding the sw6 calculation tower
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Today I built a small tower with a diameter of 400. There are several container flanges on the tower, and when performing negative pressure checks, SW6 always indicates that the cross-sectional area of the bolts on the lowest flange is insufficient. I’ve already used 40-kilogram flanges from model 4703, but it’s still not enough. I’d really appreciate it if anyone could advise me on what to do
Change the bolt material and then recalculate
Reconsider after replacing the gasket (the gasket must meet the operational requirements). .
Use bolts made of a higher-strength material; conduct calculations, and if that doesn’t work, the only option is to replace the flanges of the non-standard equipment along with using larger bolts
In the calculations for equipment flanges, non-standard flange designs are created by replacing gaskets or increasing the flange thickness
Maybe it’s a software issue; SW6 has many problems right now
If the tower is not very tall and an appropriate pressure rating is chosen for the flange, I think it’s not necessary to carry out any calculations.
The algorithm calculates the equivalent pressure at a maximum of 1 MPa; it is not necessary to calculate it as a negative pressure
Should we consider increasing the area of the bottom flange? At the same time, the number of bolts is also increased