Analysis of Transient Force Performances of Pump-Turbine during Stop Process in Pump Mode
Analysis of Transient Force Performances of Pump-Turbine during Stop Process in Pump Mode
复制标题
水泵水轮机泵工停过程瞬态力性能分析
DOI：
10.1088/1755-1315/774/1/012101
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发表时间：
2021-06
期刊：
影响因子：
--
通讯作者：
Liu Jingshi
中科院分区：
文献类型：
--
作者：
Yao Rao;Bi Huili;Wang Jun;Liu Tao;Chen Funan;Fan Honggang;Wang Zhengwei;Liu Jingshi
抽象的。泵涡轮机由于需要从泵模式切换到涡轮机模式而经常发生停机过程。停机过程中，转轮轴向推力、径向推力和扭矩等运行参数发生急剧变化，引起转轮振动。在某些情况下，旋转部件可以被提升。采用数值模拟的方法，对水泵水轮机停泵过程中的不平衡力进行了研究。CFD分析基于雷诺平均方程，SST模型用于预测瞬态流动特性。还考虑了间隙流。结果表明，轴向推力与重力方向相反，并随压头和扭矩的变化而变化。轴向推力在空载时达到最大值。
Abstract. The stop process occurs frequently for pump turbine due to the requirement of switching from pump mode to turbine mode. During stop process, the operating parameters such as the axial thrust, radial thrust and torque of the runner change rapidly, causing vibration of runner. In some cases, the rotating part can be lifted. In this paper, the unbalanced force acting on a pump-turbine during stop process in pump mode was studied using numerical simulation method. The CFD analysis was based on Reynolds averaged equation and the SST model was used to predict the transient flow characteristics. The clearance flow was also taken into consideration. Results show that the axial thrust was in opposite direction of gravity and changed with the variation of the head and torque. The axial thrust reached the maximum value in no-load condition.
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DOI：
10.1088/1755-1315/15/3/032044
发表时间：
2012-11
期刊：
IOP Conference Series: Earth and Environmental Science
影响因子：
--
作者：
J. Liu;S. Liu;Y. K. Sun;Y. Wu;L. Q. Wang
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影响因子：
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期刊：
IOP Conference Series: Materials Science and Engineering
影响因子：
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影响因子：
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DOI：
10.1088/1755-1315/49/11/112001
发表时间：
2016-11
期刊：
IOP Conference Series: Earth and Environmental Science
影响因子：
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作者：
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