The diameter of the equipment cylinder is 219, with a wall thickness of 20. I want to use a flat cover for the lower head; I’m not sure which one to choose.
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The diameter of the equipment cylinder is 219, with a wall thickness of 20. The lower head is intended to be of the flat cover type (code GB150, Table 5-10, item 14). Based on the diagram, the radius r=120 was chosen; does this seem too large? ? Is there anything else?
If nothing else works, just make custom parts
The diameter is small; I agree with you.
12 has a thinner thickness than 12 to 11
Calculate the pressure; you can just use a blind flange.
What about the flange and flange cover structure?
The design pressure is 17 MPa, and a flat-cover type is desired. One more question: I’m using Class 1500 flanges for the equipment, so what type of bolts and nuts should I use? ?
Why not use the structure in Table 5-9?
Why use a flat cover at such a high pressure of 17 MPa? For full-plane support?