摘要
电磁轴承是高温气冷堆动力转换系统氦气透平的重要组件之一,运行时出于设备保护需要对其进行冷却。该文通过GAMBIT对电磁轴承腔体进行建模,并使用三维流场分析软件FLUENT对腔内温度场、流场进行了模拟计算,评估了冷却系统的效果,并对不同氦气流量、温度下的冷却效果进行了比较及分析。分析结果表明,设计的冷却系统可有效地对电磁轴承腔内进行冷却,使用于定位监测的传感器探头等重要部件的温度被控制在允许范围之内,以确保设备安全运行。
Active magnetic bearings are important parts of helium turbines in the high temperature gas-cooled reactor （HTGR） power conversion unit. The instrumention inside the active magnetic bearing needs to be cooled due to the high temperature, A model of active magnetic bearing chamber was built by GAMBIT and analyzed using FLUENT which is a general computational fluid dynamic （CFD） program. The predicted temperature and velocity fields were obtained to study the effects of the helium flow rate and the inlet temperature. The numerical simulation results show that the active magnetic bearing chamber can be effectively cooled by the cooling system to maintain acceptable instruments temperature in the active magnetic bearing chamber, including the rotator position detector to ensure the system safety.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第3期432-435,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家"八六三"高技术项目(2003AA511010)
关键词
高温气冷堆
氦气透平
电磁轴承
计算流体力学
high temperature gas-cooled reactor （HTGR）
helium turbine
active magnetic bearing
computational fluid dynamic （CFD）
