Numerical Simulation and Experimental Study of Self-pumping Vacuum Flywheel Energy Storage Device
-
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。
-
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
Abstract: 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. -
[1] Strasik M,Hull J R,Mittleider J A,Gonder J F,et al.An over-view of Boeing flywheel energy storage systems with high-tempera-ture superconducting bearings[J].Superconductor Scienceand Technology,2010,23(2) [2] Werfel F N,Floegel-Delor U,Riedel T,Rothfeld R,et al.250kW Flywheel with HTS magnetic bearing for industrial use[J].Journal of Physics:Conference Series,2008,97(1) [3] Chew A D,Galtry M,Livesey R G,Stones I.Towards the singlepump solution:recent development in high speed machines fordry vacuum pumping[J].Journal of Vacuum Science&Tech-nology,2005,A23(5):1314～1318 [4] 刘坤,巴德纯,张振厚等.一种适于直排大气的罗茨干泵转子的型线与结构[J].真空科学与技术学报,2007,27(5):446～449 [5] 于治明,刘波,巴德纯,杨乃恒.涡轮分子增压泵的研究现状与进展[J].真空,2003,7(4):32～38 [6] Jou R Y,Tzeng S C,Liou J H.Pumping speed measurement andanalysis for the turbo booster pump[J].International Journalof Rotating Machinery,2004,10:1～13 [7] 卫海岗,戴兴建,沈祖培.储能飞轮风损的理论计算与试验研究[J].机械工程学报,2005,41(6):188～193 [8] Chen F Z,Tsai M J,Chang Y W,Jou R Y,et al.Using pluckercoordinates for pumping speed evaluation of molecular pump inthe DSMC method[J].International Journal of Rotating Ma-chinery,2001,7(1):11～20 [9] Tsui Y Y,Jung S P.Analysis of the flow in the grooved pumpswith specified pressure boundary conditions[J].Vacuum,2006,81:401～410 [10] Chang Y W,Jou R Y,Cheng H P,et al.Pumping performanceanalyses of a turbo booster pump by direct simulation Monte Carlomethod[J].Vacuum,2001,60:291～298 [11] 王晓冬,巴德纯,张世伟,张以忱.真空技术[M].北京:冶金工业出版社,2006 -
点击查看大图
计量
- 文章访问数: 125
- HTML全文浏览量: 8
- PDF下载量: 2
- 被引次数: 0
下载:
