| 自吸旋涡泵变转速性能与内部流场试验 |
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| 引用本文： | 沙毅,李金磊,刘祥松,侯丽艳,程峰.自吸旋涡泵变转速性能与内部流场试验[J].农业机械学报,2009,40(12):119-124. |
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| 作者姓名： | 沙毅 李金磊 刘祥松 侯丽艳 程峰 |
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| 作者单位： | 1. 浙江科技学院机械与汽车工程学院,杭州,310023
2. 江苏大学能源与动力工程学院,镇江,212013 |
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| 摘 要： | 研制25WZ1-12型自吸旋涡泵试验样机,通过型式及变转速外特性试验,得出旋涡泵q_v-H、q_v-η性能曲线变化规律,验证q_v-H、q_v-P曲线换算满足相似理论比例定律,q_v-NPSH曲线换算不满足汽蚀相似定律;用5孔管束探针对流道流场进行测量,得到流场静压p_s、当量径向速度v_(re)和当量圆周速度v_(ue)随泵转速变化分布状况;通过对试验数据的分析,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,指出旋涡泵的汽蚀类型及发生部位,为旋涡泵优化设计和建立内部流动模型提供参考依据.
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| 关 键 词： | 旋涡泵 流场 相似理论 变转速 汽蚀余量 |
-priming Vortex Pump Variable Speed Performance and Internal Flow Test |
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| Sha Yi,Li Jinlei,Liu Xiangsong,Hou Liyan,Cheng Feng.-priming Vortex Pump Variable Speed Performance and Internal Flow Test[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(12):119-124. |
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| Authors: | Sha Yi Li Jinlei Liu Xiangsong Hou Liyan Cheng Feng |
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| Abstract: | The 25WZ1-12 vortex self-priming pump test prototype was developed. Through the experiment of type and the external characteristics of the variable rotational speed, performance curves, such as q_v-H and q_v-η, were obtained. The curve conversion for q_v-H meets the proportion law of similar theory, but the q_v-NPSH curve conversion does not satisfy the cavitation affinity law for the vortex pump. The flow channel field was measured with 5-hole probe, to gain the distribution of flow static pressure p_s, equivalent v_(re) radial velocity and equivalent circumferential velocity v_(ue) at the various pump rotational speed. By analyze the test data, the relation between the external characteristic and the internal flow was discussed, also the type and location for the cavitations of the vortex pump was presented. |
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| Keywords: | Vortex pump Flow field Similar theory Variable speed NPSH |
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