摘要
针对盘式电机型飞轮储能装置的飞轮风损情况,采用自抽真空飞轮储能装置来减少飞轮风损,设计了飞轮储能装置的内置分子泵,再用计算流体动力学法模拟内置分子泵转子螺旋槽内的气体粘滞流、滑移流,分析其抽真空性能,最后进行自抽真空方式与普通外置真空系统对飞轮储能装置抽真空时间对比。结果表明:自抽真空飞轮储能装置的内置分子泵螺旋槽入口与出口总存在压力差,在12 000 r/min～60 000 r/min范围内抽真空性能较好,达到0.01 Pa所需时间仅为外置真空系统抽气时间的1/20左右,表明此装置抽气时间短并切实可行。
Due to the wind loss of flywheel in disc motor type flywheel energy storage devices, the paper focused on using self-pumping vacuum flywheel energy storage devices to reduce the wind loss, an interior molecular pump of flywheel energy storage devices is designed, and viscous gas flow and slip flow in the rotor spiral groove of the inte- rior molecular pump is simulated by computational fluid dynamics method to analyze its vacuuming performance. The vacuum-pumping time of flywheel energy storage devices in self-pumping style is compared with that in common external vacuum system. The results demonstrate that there always exists pressure difference between the entrance and the exit of the rotor spiral groove of the interior molecular pump of self-pumping style. Within the scope of 12 000 r/min - 60 000 r/min, vacuuming performance is good, and it only takes 1/20 of the time when the common external vacuum system needs to reach 0.01 Pa.
出处
《机械科学与技术》
CSCD
北大核心
2012年第7期1037-1041,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
湖南省科技计划项目(2011SK3264)资助
关键词
自抽真空飞轮储能装置
内置分子泵
泵转子
计算流体动力学
self-pumping vacuum flywheel energy storage device
interior molecular pump
rotor of molecular pump
CFD
