HTR-10 GT辅助轴承保持架振动特性研究

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Research on Vibration Properties of Auxiliary Bearing Cage Used in HTR-10 GT Project

Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China

摘要: 在10MW高温气冷堆氦气汽轮机发电系统(HTR-10 GT)中,辅助轴承作为磁力轴承支承失效后转子的辅助支承装置,是整个转子系统最重要的安全保障。针对辅助轴承的工作特点,采用有限元方法进行了建模分析,研究了辅助轴承中保持架的离心应力和自由振动特性,讨论了不同结构参数对保持架振动特性的影响。结果表明,保持架上的最大离心应力发生在侧梁中点处;在辅助轴承工作状态下,较易引发低频的振动模态;对保持架尺寸以及兜孔数的合理选择有助于提高保持架的性能。
- HTR-10 GT /
- 辅助轴承 /
- 保持架 /
- 离心应力 /
- 振动
Abstract: Auxiliary Bearings（ABs）is one of the most important parts in Active Magnetic Bearing（AMB）system,which was used in HTR-10 GT project.This paper uses finite element method to analyze the cen-trifugal stress and free vibration properties of the cage according to its work condition.And different geomet-ric parameters of the cage that has effects on its vibration performance are discussed.The results show that the highest centrifugal stress is in the middle of the cage side sill.The low oder vibration modes of the cage can be induced when the auxiliary bearings are working.Proper geometric parameters and ball pocket number can enhance the performance of the cage.
- HTR-10 GT /
- Auxiliary bearing /
- Cage /
- Centrifugal stress /
- Vibration