Calculation range of the load on the pipe port at the center of the head
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I’m a complete novice when it comes to pressure vessels, and I have a question for the experienced professionals here. For a pipe connected to an opening in the center of a head, it is necessary to calculate the load on that pipe connection. The head in question is of type EHA700×14, while the pipe connected to the opening has a diameter of Φ406.4×16. Whenever I enter these values for calculation, the result shows that the values are outside the acceptable range or an error occurs, preventing a calculation from being performed. I would appreciate it if the experienced professionals could tell me what the acceptable range for calculating the load on such pipe connections is, and which standards specify this. Thank you very much for your assistance.
The main standard referred to for calculating the nozzle load at the center of a head is the \"Code for Design of Steel Pressure Vessels\" (GB 150.3), which addresses requirements related to the structural design of the head and nozzles, dimensional ratios, and the pressures they must withstand. If you are unable to perform calculations after entering the data, it may be because the dimensions of the headers or connections do not meet the specified requirements, or because the calculation tool used differs from the prescribed parameter settings. It is recommended to recheck whether the data for the inputed head and nozzles meet the standard requirements regarding interface dimensions and thickness, in order to ensure the validity of the calculations. At the same time, you can also consult pressure vessel designers with professional experience or use more up-to-date and accurate calculation software to try to solve the problem. .
You’ve misunderstood. What I’m referring to is the range of loads on the nozzle opening – specifically, the calculations for the XYZ axes as listed in the appendix to SH3074, as well as the calculations for forces and moments. Where can one find out what that range is? For example, what is the ratio of the inner diameter of the head to the diameter of the opening? Is there any standard that specifies this value?
You’ve misunderstood. What I’m referring to is the range of loads on the pipe outlet, namely the calculations for the XYZ axes as stated in the appendix to SH3074, including the calculations of forces and moments
Where can I find out that range? For example, what is the ratio of the inner diameter of the head to the diameter of the opening? Which standard specifies that value?
GB20801.3-2020 Appendix I