I would like to ask how to calculate such a packed tower?
Thread Content
How is the reinforcement for the openings on the head of the bottom tower section calculated? Thank you!
It can be checked using the local stress module in SW6 components.
The second floor is the correct choice; it’s just necessary to accurately record the load on the upper tower. Additionally, special attention must be paid to the selection of flange gaskets and fasteners, with the selection being based on the equivalent pressure of the flange.
I would like to ask how to calculate the flange equivalent pressure (internal pressure); is SW6 suitable?
Can the flange of that device on top (type B or long-neck) be welded directly to the head? No tube sections.
How is the load determined during the local stress verification calculation at the head nozzle connection?
The M value is calculated using the column in SW6, and then the external torque value is obtained from the piping engineering team. Type B flanges, after having their length sections added, can be welded to the head, whereas long-neck flanges cannot be directly welded to the head
The radial force is the gravity generated during the hydrostatic test of the upper packing tower; as for the forces in the other two directions, it depends on the actual situation – if there is no upward thrust, then the value is 0. The bending moment about the axis can be calculated by referring to the calculations for the equipment in the upper part of the tower.
Long-neck butt weld flanges cannot be welded directly to end caps; there are requirements regarding the length of the cylinder section that is to be welded to the long-neck surfacing flange, as specified in NB/T47020. If type B flanges are used, the straight sections of the end cap can be lengthened, but the requirements specified in 7.1.2.2 of SH/T3074-2018 must be met.
You can also refer to the SW6 tower module, which contains the verification calculations for the equipment flanges; pay attention to determining the flange height when entering the data