Research on Impact Properties of Auxiliary Bearings in HTR-10 AMB Helium Circulator Based on Quasi-Static Method
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摘要: 对清华大学10 MW高温气冷堆(HTR-10)磁轴承氦风机辅助轴承抗冲击特性进行研究,计算立式转子跌落的冲击作用力,并采用拟静力学分析方法对辅助轴承变形量进行计算。计算结果表明:在不同转速下,立式转子跌落在一定时间后对辅助轴承作用力大致相同,跌落后期接触力达到仅与跌落前转子(包括转子转速、质量等)有关的恒定值;跌落后期辅助轴承变形量与该接触力有关,而辅助轴承变形量在宏观上表现为轴承系统的振动位移。因此,辅助轴承的振动位移量可作为衡量辅助轴承自身状态的参数。Abstract: The AMB’s impact properties are studied in this paper based on AMB in the helium circulator for the 10 MW high temperature gas cooled reactor（HTR-10）. The impact force when the vertical rotor drops is calculated, and the amount of deformation of the auxiliary bearings is calculated based on the quasi static analysis. The calculation results show that the acting force between the rotor and the auxiliary bearing is roughly the same, no matter what is the rotational speed of the rotor. And after a certain time, the acting force reaches a constant value which is only concerned with the rotor（the rotor speed, quality, and etc）. The deformation amount of the auxiliary bearing is also roughly the same according to the results. The deformation amount appears as the bearing’s vibration displacement on the macro level. So it can measure the state of the auxiliary bearing.
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Key words:
- HTR-10 /
- Active magnetic bearing /
- Auxiliary bearings /
- Rotor drop /
- Quasi-static analysis
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