Calculation of negative pressure in pressure vessels
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The pressure vessel with ID 2900 is horizontal in design, with a cylinder length of approximately 6000 mm. It is intended to hold 6 different types of fluids, and the interior is divided into sections using 5 partitions. It is necessary to perform stress calculations for each of these partitions; moreover, it is important to consider the possibility that the adjacent chambers may be empty – how should such calculations be carried out? Internal pressure: FW+15KPA; negative pressure may be -0.5KPA
Calculated based on the largest chamber, with negative pressure inside and positive pressure outside, representing the most extreme scenario.
The partition can be counted as reinforcement. Consider the maximum negative pressure and the maximum compressed length
Calculated based on the most stringent selection parameters applicable to each chamber: the partition is taken as a flat cover, while the cylinder is based on the maximum value calculated for each chamber. Of course, the cylinder thickness can also be divided into sections for one chamber or multiple chambers.
So when entering the parameters, is it internal pressure of -0.5 kPa and external pressure of 100 kPa?
Segment it, and calculate separately based on the severe conditions that may occur for the parameters of each segment. The flat cover is designed based on the thickness of the two chambers it covers, while the cylinder is divided into sections; the thickness of each section is determined by the thickness of the thickest chamber covered by that section