摘要
离心式冷压机是大型低温超流氦制冷系统的核心部件,其低温、负压环境以及高速条件使得轴承工作寿命受到挑战。高温超导磁悬浮轴承具有载重大、抗干扰性强、无需主动控制等优点,因此应用潜力巨大。针对磁悬浮力与转子动力学性能的综合考虑,提出了一种优化设计方法和悬浮载重比优化指标,基于ANSYS磁场有限元软件,设计并优化完成一款小型高速超导磁悬浮轴承,悬浮刚度达到5.21×10~5N/m。相关结果表明,通过合理优化,超导磁悬浮轴承具备足够的悬浮刚度,可以满足相关应用需求。
Centrifugal turbo cold compressor is the key component of large superfluid cryogenic system. Due to the low tem- perature, negative pressure and high speed, the operating life of bearing is limited. The high temperature superconductive （HTS） maglev bearing has high loading capacity, well antijamming capacity, and without the requirement of active control, which makes it very suitable for the engineering application. Aiming at considering both of loading capacity and rotor dynamics, the optimization method and index were proposed. The ANSYS magnetic analysis software was applied to design and optimize a high temperature superconductive maglev bearing. Then the magnetic stiffness of this structure was up to 5.21×10^5N/m. The resuits of this article demonstrate that the HTS bearing can acquire enough maglev force and stiffness by optimal design.
出处
《低温与超导》
北大核心
2017年第7期48-54,共7页
Cryogenics and Superconductivity
基金
航天低温推进剂技术国家重点实验室基金课题(SKLTSCP1603)资助
关键词
高温超导体
磁悬浮轴承
参数优化
离心式冷压机
High temperature superconductor, Maglev bearing, Parameter optimization, Centrifugal turbo cold compressor
