杨孙圣,孔繁余,陈斌
YANG Sun-sheng1,KONG Fan-yu1,CHEN Bin1

• 1:江苏大学
• 2:南京蓝深制泵集团股份有限公司

摘要(Abstract)：

为了有效利用能源,将泵在透平工况下运行回收高压液体能量,是节能技术的研究方向之一。叶片包角是可逆式泵设计时的主要参数之一。以比转速72的离心泵为研究对象,分别对不同叶片包角的叶轮进行了泵和透平工况的全流场数值研究。研究结果表明:对于可逆式泵,存在最佳叶片包角使泵的效率最高。随着叶片包角的增大,泵工况下的流量扬程曲线更加陡峭,轴功率逐渐减小;透平工况下的扬程、轴功率逐渐增加,流量扬程,流量轴功率特性曲线越来越陡峭。流场分析结果表明,叶片包角的增加,有效的改善了叶轮内部流场分布,使泵内部的流场分布更加均匀,研究结果对于可逆式泵的设计具有一定的指导意义。
Pump as turbine(PAT) technology which uses reverse running pump for high pressure fluid power recovery purpose,is one of the main research field of energy conservation technology.Blade wrap angle is one of the main parameters in the reversible pump hydraulic design.The effect of blade wrap angle on the performance of a centrifugal pump with its specific speed of 72 working in pump and pump as turbine mode was carried out,using numerical method.The research results show that: there is a best blade wrap angle for the reversible pump to reach its highest efficiency.In pump mode,the flow versus head curve becomes increasingly steep and the pump shaft power gradually decreases with the increase of blade wrap angle.In turbine mode,there is a rise of the turbine's head,shaft power and the flow versus head,flow versus shaft power curves become increasingly steep with the increase of blade wrap angle.The flow field analysis shows that the flow within the impeller is improved and the flow field distribution becomes increasing uniform with the increase of blade wrap angle.This research results could provide guidance to the design of reversible pump impeller.

关键词(KeyWords)： 可逆式泵;叶片包角;数值研究;流场分析
reversible pump;blade wrap angle;numerical research;flow field analysis

Abstract:

Keywords:

基金项目(Foundation): 国家科技人员服务企业行动项目(2009GJC10007)

作者(Author): 杨孙圣,孔繁余,陈斌
YANG Sun-sheng1,KONG Fan-yu1,CHEN Bin1

参考文献(References)：

• [1]关醒凡.现代泵技术手册[M].北京:宇航出版社1995.
• [2]Chapallaz J M,Eichenberger P,Fischer G.Manualon Pumps Used as Turbines[M].Vieweg,Braun-schweig,1992.
• [3]杨华,刘超,汤方平,等.不同叶片包角的离心泵试验与数值模拟[J].机械工程学报,2007,43(10):165-169.
• [4]曹卫东,李跃,张晓娣.低比转速污水泵叶片包角对水力性能的影响[J].排灌机械,2009,27(6):362-36.
• [5]严敬,潘光玉.低比转速叶轮叶片数的选择准则[J].排灌机械,2008,26(1):18-20.
• [6]袁寿其.低比转速离心泵理论与设计[M].北京:机械工业出版社,1997.
• [7]Singh P.Optimization of the Internal Hydraulics and ofSystem Design for Pumps as Turbines with Field Im-plementation and Evaluation[D].University ofKarlsruhe,Germany,2005.
• [8]Simpson R G,Williams A A.Application of compu-tational fluid dynamics to the design of pico propellerturbines[A].Proceedings of the International Confer-ence on Renewable Energy for Developing Countires[C].2006:1-10.
• [9]YANG Sunsheng,KONG Fanyu,SHAO Fei,et al.Numerical Simulation and Comparison of pump andpump as turbine[A].ASME2010 Montreal[C].Can-ada,August,2010:1-10.
• [10]刘根宜.低比转速离心泵叶片数的选择[J].水泵技术,1995,5:29-31.