Calculation of dynamic characteristics of turbomachinery mechanical seals

Rotor vibration stands out as one of the primary causes of mechanical seal failure. However, classical dynamic seal models often would not be able to fully explaining the failure process. Therefore, the proposed dynamic model systematization, including the models developed by the authors, proves invaluable in predicting the dynamic behavior of seals during operation within specific turbomachines or explaining the causes of seal failure. The single-mass dynamic model can be used to study the operation of the contact mechanical seals and simple dry gas seals. Meanwhile, the two-mass dynamic model is used for the studding of operational processes in classical dry gas seals under complex loading. Additionally, the three-mass dynamic model finds application in studying the operation of various complex mechanical seal types. This model is used to accurately determine the range of normal operating conditions for such seal types and to identify the mechanism of leakage loss in the presence of excessive rotor vibrations.