Opening in externally pressurized vessels
Thread Content
How is one supposed to calculate large openings in pressure vessels under external pressure? Are there any other good methods besides analytical design? Can it be calculated using internal pressure?
The pressure vessels I’ve seen generally don’t have any openings, and the information I have on hand doesn’t mention anything related to this either
The pressure vessels with openings that I have seen are those equipped with jackets; however, the pressures involved are quite low, so in most cases no calculations are necessary. It is also possible to carry out manual calculations using the GB150 formula. So far, I have not encountered any calculation software for this purpose
If an external-pressure vessel has no openings, how does the material enter and exit?
I’ve encountered a few cases where the openings in the vacuum vessels were quite large. This is because both the thickness of the main body itself and the thickness of the connections were relatively large, and reinforcement rings were also used. When the equal area method could be applied, it was used; otherwise, the pressure area method was employed. The pressure area method isn’t suitable for vessels with reinforcement rings, so those rings are excluded from the calculations. If nothing else works, analysis and calculation are the only options.