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J4  2010, Vol. 44 Issue (9): 1811-1817    DOI: 10.3785/j.issn.1008-973X.2010.09.029
能源与机械工程     
旋流泵变转速性能及无叶腔流场实验研究
吴坚, 沙毅, 徐兴
浙江科技学院 机械与汽车工程学院, 浙江 杭州 310023
Experimental investigation on variable speed performance and
volute flow of vortex pump
WU Jian, SHA Yi, XU Xing
 全文: PDF 
摘要:

为研究旋流泵变转速相似定律换算、内部流场变化和外特性与内部流动的关联,研制32WB812型旋流泵试验样机.通过型式及变转速外特性试验,得出泵扬程、功率、效率和临界汽蚀余量曲线变化规律;用5孔球形探针对无叶腔流场进行测量,得到变转速流场5个测点静压、绝对速度、圆周速度、径向速度和轴向速度变化规律,证明轴向旋涡运动为主流,存在回流运动;通过对实验数据进行分析,解释了外特性参数与内部流动参数之间的联系和变化规律,阐明旋流泵抽吸及扬程形成原理;验证流量、扬程和轴功率满足相似理论比例定律,汽蚀余量不满足汽蚀相似定律,且其曲线呈与离心泵等相反的趋势.

关键词:  旋流泵变转速流场外特性汽蚀余量    
Abstract:

In order to investigate the variable speed similar law and the relationship between the performance and internal flow field, model and variable speed external characteristics, experiments were carried out on a selfdesigned and manufactured  vortex pump (32WB812).  The head, power, efficiency and critical net positive suction head curves of the vortex pump were obtained. The flow field in the volute was measured using the fivehole spherical probe at the measuring point, and the flow static pressure,  absolute velocity,  circumferential velocity,  radial velocity and  axial velocity were obtained with the variable speeds. It is verified that the axial vortex is critical in the mainstream and backflow exists as well. From the experimental data analyses, some explanations were given for the link and changing trends between the external characteristics and the internal flow parameters. Meanwhile, the suction and lifting principle of the vortex pump were expounded. The head and power curves meet the similar law well, while the critical net positive suction head curves are not consistent with the cavitation similar law. And the critical net positive suction head curve shows opposite tendency compared with its counterpart of centrifugal pump.

Key words: vortex pump    variable speed flow field    external characteristics    net positive suction head(NPSH)
出版日期: 2010-10-10
:  TH 314  
基金资助:

浙江省自然科学基金资助项目(Y6090718)

作者简介: 吴坚(1965-),男,浙江杭州人,副教授,从事设备设计制造与测试技术研究.E-mail: wujian@zust.edu.cn
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引用本文:

吴坚, 沙毅, 徐兴. 旋流泵变转速性能及无叶腔流场实验研究[J]. J4, 2010, 44(9): 1811-1817.

TUN Jian, SHA Yi, XU Xin. Experimental investigation on variable speed performance and
volute flow of vortex pump. J4, 2010, 44(9): 1811-1817.

链接本文:

http://www.zjujournals.com/xueshu/eng/CN/10.3785/j.issn.1008-973X.2010.09.029        http://www.zjujournals.com/xueshu/eng/CN/Y2010/V44/I9/1811

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