Study of pump-turbine's pressure fluctuations at reverse pump mode

doi:10.13243/j.cnki.slxb.2015.03.012

CORC > 兰州理工大学 > 兰州理工大学 > 新能源学院

	Study of pump-turbine's pressure fluctuations at reverse pump mode
	Li, Qifei 1,2; Jiang, Lei 1,2; Li, Rennian 1,2; Quan, Hui 1,2
刊名	Shuili Xuebao/Journal of Hydraulic Engineering
	2015-03-01
卷号	46 期号:3 页码:350-356
关键词	Computer simulation Flow fields Mixer circuits Numerical models Pumped storage power plants Detached eddy simulations Full three-dimensional Low frequency pressure Pressure fluctuation Pump-turbines Pumped storage power station Reverse pump mode Turbulence characteristics
ISSN号	05599350
DOI	10.13243/j.cnki.slxb.2015.03.012
英文摘要	To study the pressure fluctuation characteristics of the pump-turbine at reverse pump mode, the numerical simulation which used the detached eddy simulation(DES) was carried out at reverse pump mode, based on the model pump-turbine in a pumped storage power station in China. The turbulence characteristics of the full three-dimensional flow field was investigated and compared with the experimental results. The pressure fluctuation characteristics of the model pump-turbine at reverse pump mode was analyzed. The results showed that, under reverse pump conditions, the dominating frequency between the guide vanes and runner is 0.143 fn (fn is the rotation frequency of runner) as well as the draft, and the amplitude of dominating frequency reached 12 % and 34.6 % respectively, accounted for the mixing frequency. The flow field analysis suggested that the spiral vortex structure in the draft tube was the main reason which causes this low frequency pressure fluctuation. Compared with the common operating conditions, the unsteady flow at reverse pump mode resulted in the sudden increase of the relative amplitude of pressure. As a results, it led to the unit vibration and affected the safe operation seriously. ©, 2015, China Water Power Press. All right reserved.
语种	中文
出版者	International Research and Training Center on Erosion and Sedimentation and China Water and Power Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150405]
专题	新能源学院能源与动力工程学院
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Fluid machinery and Systems, Lanzhou; Gansu; 730050, China
推荐引用方式 GB/T 7714	Li, Qifei,Jiang, Lei,Li, Rennian,et al. Study of pump-turbine's pressure fluctuations at reverse pump mode[J]. Shuili Xuebao/Journal of Hydraulic Engineering,2015,46(3):350-356.
APA	Li, Qifei,Jiang, Lei,Li, Rennian,&Quan, Hui.(2015).Study of pump-turbine's pressure fluctuations at reverse pump mode.Shuili Xuebao/Journal of Hydraulic Engineering,46(3),350-356.
MLA	Li, Qifei,et al."Study of pump-turbine's pressure fluctuations at reverse pump mode".Shuili Xuebao/Journal of Hydraulic Engineering 46.3(2015):350-356.