Stress issues at the connections of pressure vessel equipment
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I would like to ask everyone: Given known conditions such as pressure, temperature, wall thickness, and diameter, is it possible to determine the forces that each direction at the pipe end can withstand? Are there stress curves in the specifications? I would appreciate some guidance from experts. Thank you.
This is provided by the piping specialty, right? It’s not determined by the equipment specialty; we don’t know how it’s calculated either.
What you are referring to is the issue of local stress; it is necessary to take into full account the external piping of the equipment. Axial force arises from thermal expansion, lateral force results from the unsupported length of the outer pipe, and bending moment is caused by the translation of lateral forces. These issues should be addressed in conjunction with the manufacturing process.
Given known conditions such as pressure, temperature, wall thickness, and diameter, it is also necessary to know the equipment’s diameter, material, and other details. In the past, customers have specified the loads acting on the pipe ends, including axial forces, radial forces, and bending moments; we have helped to verify whether these pipe ends can withstand such loads. I haven’t actually calculated the maximum load that each direction at the pipe outlet can withstand. It’s possible to use software to carry out such calculations; however, I don’t think there are any such stress curves specified in the standards – I’ve never seen them before, as this issue involves quite a number of factors
So-called norms and standards refer to common, reusable rules established for activities in order to achieve optimal order within a certain scope. Therefore, the question raised by the original poster is not addressed in any regulations or standards; the only way to solve it is to apply the knowledge acquired to analyze specific situations on a case-by-case basis.
Thank you, guys upstairs. Our structural engineering department has already calculated the forces acting on the pipe ends and conducted evaluations for the equipment. On-site, the main issue is that the wall thickness of the pipes has increased, resulting in poor flexibility of the pipes; there is a concern that this could cause excessive stress on the equipment. Now the brother understands. Thank you all.