Influence of stator vane number on performance of the axial-flow pump

被引：0
作者：
Can Kang
Xiaojie Yu
Weifeng Gong
Changjiang Li
Qifeng Huang
机构：
[1] Jiangsu University,School of Energy and Power Engineering
[2] Shanghai Marine Equipment Research Institute,undefined
[3] Shanghai Kaiquan Pump Group Co.,undefined
[4] Ltd,undefined
来源：
Journal of Mechanical Science and Technology | 2015年 / 29卷
关键词：
Axial-flow pump; Stator vane number; Numerical simulation; Performance test; Vibration; Pressure fluctuation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The interplay of impeller and stator is investigated for an axial-flow pump. Three stator vane numbers of 5, 7 and 9 are devised to match the same impeller. The renormalization group k-e turbulence model is used to simulate three-dimensional flows in three pumps with different vane numbers. Axial velocity distributions at impeller outlet and stator outlet are comparatively analyzed. Experiments assess operation performance of the three pumps. Vibration parameters and static pressure fluctuations are measured as well. It is indicated that the influence of vane number on both pump head and pump efficiency is insignificant. Large stator vane number contributes to the improvement of the uniformity of axial velocity distribution at impeller outlet. At stator outlet, similar tendency is revealed. Severe vibration occurs near the outlet bend of the pump, as is particularly remarkable at vane number of 9. For the three cases, blade passing frequency and its harmonics are predominant in the frequency spectra of pressure fluctuations. As flow rate increases from 0.8Q to 1.0Q, high-frequency pressure fluctuations are suppressed considerably at vane number of 9, while the other two cases also manifest a decline in overall pressure fluctuation amplitude. The 7-vane case is the most preferable one among the three cases in terms of both pump performance and pressure fluctuation between the impeller and the stator.
引用
收藏
页码：2025 / 2034
页数：9
相关论文
共 79 条
  • [1] Egusquiza E.(2012)Failure investigation of a large pump-turbine runner Engineering Failure Analysis 23 27-34
  • [2] Valero C.(2000)An integrated nonlinear approach for turbomachinery forced response prediction, Part II: case studies J. of Fluid and Structures 14 103-125
  • [3] Huang X.(2012)Property of unsteady pressure and meridional velocity in wake region of axial-flow pump impeller Transactions of the Chinese Society of Agricultural Engineering 28 32-37
  • [4] Jou E.(2008)Characteristics of force acting on adjustable axial flow pump blade Frontiers of Energy Power Engineering in China 2 508-513
  • [5] Guardo A.(2003)Experimental study on regaining the tangential velocity energy of axial flow pump Energy Conversion and Management 44 1817-1829
  • [6] Rodriguez C.(2007)Stereoscopic PIV measurement of unsteady flows in an axial compressor stage Experimental Thermal and Fluid Science 31 1049-1060
  • [7] Vahdati M.(2012)Modal decomposition for the analysis of the rotor-stator interactions in multistage compressors J. of Thermal Science 21 276-285
  • [8] Satma A. I.(2001)Fundamental analysis on rotorstator interaction in a diffuser pump by vortex method J. of Fluids Engineering 123 737-747
  • [9] Imregun M.(2006)Investigation of vortex shedding and wakewake interaction in a transonic turbine stage using laser- Doppler-velocimetry and particle-image-velocimetry J. of Turbomachinery 128 178-187
  • [10] Zhang D.(2011)PIV measurement on internal instantaneous flows of a centrifugal pump Science China Technological Science 54 270-276
12345678