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Inspect the welds at the shell side under a pressure of -0.1 MPa; the design pressure for the shell side is 2.2 MPa, while that for the tube side is 0.8 MPa. The diameter of the cylinder is 1600, with a wall thickness of 14 mm. The high-neck flange operates at 1.0 MPa. The wall thickness of the tube side is 10 mm; the end caps are made of stainless steel, and flexible graphite wave-shaped metal gaskets are used. The bolt material is 35CrMoA; it involves 4 processes. The area of the partition at that location is approximately 80,000, the thickness of the partition is 14, and its cross-sectional area is about 40,000. I’d appreciate it if someone could help me determine the thickness of the tube sheet – I chose 52. Why do my calculations give different results at times? Is it necessary to carry out calculations for negative pressure conditions as well?
At first, the 30CrMoA material was used for the calculations, but it indicated that the flange torque was 0; after changing the material, the strength calculations passed, thanks to the cracking software used on my computer
19*2 10# heat exchange tubes, tube sheet 16mn, cylinder q345r