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| Effects of relative setting position between diffuser and volute on flow characteristics of residual heat removal pump |
| Wang Wenjie, Yuan Shouqi, Pei Ji |
| National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract In order to investigate the best relative setting position between the diffuser and volute, the three-dimensional, steady turbulent flows in a residual heat removal pump(RHRP)are simulated at five relative positions by using ANSYS CFX14.0. The pressure, velocity and turbulent kinetic energy distributions in the RHRP are achieved and analysed comparatively. The results show that the relative position influences the pump head slightly under design and over-load conditions. Under part-load condition, even though the relative position shows a less effect on the pressure distribution in the impeller, it impacts the flow characteristics in the diffuser and volute obviously. As the relative position is θ=79.56°, there is the widest range of high efficiency for the pump, and there is a uniform pressure gradient in the diffuser and the discharge nozzle of the volute. Besides, the variation of the pressure and velocity gradients is minimal in the volute. The results can provide a reference for selecting the best relative position between diffuser and volute.
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Received: 06 November 2013
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| [1]刘鹏,龙湘鹏,关海波.浅谈1 000 MW核电站用余热排出泵[J].水泵技术, 2009(6):18-20. Liu Peng,Long Xiangpeng,Guan Haibo. Disscusion about the residual heat removal pump in 1 000 MW nuclear power plant [J]. Pump Technology, 2009(6):18-20.(in Chinese)[2]依岩,柴国旱,张和林. 压水堆核电厂余热排出系统设计中一些安全问题的探讨[J].核安全,2006(1):48-52. Yi Yan,Chai Guohan,Zhang Helin. Some safety issues in residual removal system design of pressurized water reactor npps[J]. Nuclear Safety,2006(1):48-52.(in Chinese)[3]周琦.离心泵内部流动分析与蜗壳优化研究[D].大连:大连理工大学能源与动力学院, 2012.[4]常书平,王永生.基于三维湍流数值模拟的余热排出泵叶轮优化设计[J].排灌机械工程学报,2011, 29(5): 397-400. Chang Shuping,Wang Yongsheng. Optimal design of impeller for residual heat removal pumps based on numerical simulation of 3D turbulent flow [J]. Journal of Drainage and Irrigation Machinery Engineering,2011, 29(5): 397-400.(in Chinese)[5]甄咏鹏.余热排出泵水力设计[D].大连:大连理工大学能源与动力学院, 2010.[6]滕国荣,李彦军,严建华,等.核电站余热排出泵轴承体的受热分析[J].流体机械,2012,39(12):33-37. Teng Guorong,Li Yanjun,Yan Jianhua,et al. Thermal analysis on bearing body of residual heat removal pump in nuclear power plant [J]. Fluid Machinery,2012,39(12):33-37.(in Chinese)[7]孔繁余,王婷,黄道见,等.核电站余热排出泵热冲击回路设计[J].排灌机械工程学报,2010,28(4):291-294. Kong Fanyu,Wang Ting,Huang Daojian,et al. Design for thermal shock loop of residual heat removal pump[J]. Journal of Drainage and Irrigation Machinery Engineering,2010,28(4): 291-294.(in Chinese)[8]Velarde-Suárez S,Ballesteros-Tajadura R,Santolaria-Morros C,et al. Reduction of the aerodynamic tonal noise of a forward-curved centrifugal fan by modification of the volute tongue geometry [J]. Applied Acoustics,2008,69(3):225-232.[9]Muggli F A,Holbein P,Dupont P. CFD calculation of a mixed flow pump characteristic from shutoff to maximum flow[J]. Journal of Fluids Engineering,2002,124(3):798-802.[10]张洪博,陈红勋,张伟,等.离心泵定常计算中叶轮转动位置的影响[J].上海大学学报:自然科学版,2009,15(5):470-473. Zhang Hongbo,Chen Hongxun,Zhang Wei,et al. Effect of impeller position in steady calculation of centrifugal pump [J]. Journal of Shanghai University: Natural Science,2009,15(5):470-473.(in Chinese)[11]齐学义,周慧利,高志远.含沙水流水轮机两列导叶相对位置对活动导叶磨损的影响[J].兰州理工大学学报,2013,39(1):37-41. Qi Xueyi,Zhou Huili,Gao Zhiyuan. Influence of relative setting position of double guide vane on abrasion of guide vane in hydraulic turbine operated in silt-laden water flow [J]. Journal of Lanzhou University of Technology,2013,39(1):37-41.(in Chinese)[12]周水清,孔繁余,王志强,等.基于结构化网格的低比转数离心泵性能数值模拟[J].农业机械学报,2011,42(7):66-69. Zhou Shuiqing,Kong Fanyu,Wang Zhiqiang,et al. Numerical simulation for low specific-speed centrifugal pump with structured grid [J].Transactions of the Chinese Society for Agricultural Machinery,2011,42(7):66-69.(in Chinese) |
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