Analysis of the Influence of Tolerance Design on Unbalanced Mass of Rotating Pressure Vessel

Abstract

Abstract The unbalanced mass will cause forced vibration of the pressure vessel when it rotates, and the magnitude of the unbalanced mass is positively correlated with the amplitude of the pressure vessel. Therefore, the study of unbalanced mass is of great significance to the safety of rotating pressure vessels. The influence of form and position tolerances and assembly tolerances on the unbalanced quality of pressure vessel parts is analyzed, and the normal distribution model is used to simulate the tolerance distribution of parts in mass production, and then the total unbalanced mass of the pressure vessel is calculated by the vector synthesis method. Through sensitivity analysis, the parts and key positions that have a greater impact on the total unbalanced mass of the pressure vessel are found, and the geometric tolerances of the parts with high process difficulty are optimized, which provides a theoretical basis for the tolerance optimization design work of the rotating pressure vessel.