Abstract
The helium circulator is used in the 10MW High Temperature Gas-cooled Reactor (HTR-10). The circulator operates at helium condition in order to transport the core heat to the steam generator. Rotor is a key component of the helium circulator. The rotor vibrates during the operation of the helium circulator. The study of the vibration characteristics of the rotor can provide important design parameters for the helium circulator. The effect of the shell on the rotor in the helium circulator is ignored in the usual research and analysis. In this paper, the working process of the rotor considering the shell effect was studied by theoretical analysis, and the vibration characteristics of the rotor considering the shell effect with various types and parameters was studied by finite element method (FEM). More accurate ranges of the rotor parameters which ensure the helium circulator to operate normally were determined. The shell increases the degree of freedom (DOF) of the rotor, which makes the analysis of the motion process of the rotor more complicated.
The results show that the different parameters of the shell on the rotor play an important role in the analysis results of the vibration characteristics. The analysis results considering the shell effect of the rotor are more accurate than the usual analysis results.
