喷灌与滴灌两用自吸泵设计与分析  

Design and analyses of sprinkler irrigation and drip irrigation dual-use self-priming pump

作　　者：潘中永[1] 张大庆[1] 李彦军[1] 潘希伟[1] 

机构地区：[1]江苏大学流体机械工程技术研究中心,江苏镇江212013

出　　处：《华中科技大学学报（自然科学版）》2014年第3期122-126,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家高技术研究发展计划资助项目(2011AA100506);国家自然科学基金资助项目(51109096);江苏省自然科学基金资助项目(BK2011502)

摘　　要：首先介绍了泵的现代多工况设计理论,并对其广义和狭义的范畴进行了定义.明确了狭义多工况设计的设计准则和优化目标.然后根据某具体两用自吸泵的喷灌与滴灌的时间比例,建立了以总能量消耗最小为优化目标的两用自吸泵两工况优化设计方法.在此基础上根据传统设计方法预测得到所有可能的性能曲线,为满足两工况的设计目标,根据蜗壳对泵性能的影响进一步对蜗壳的设计进行了调整.应用计算流体动力学软件(CFD)对设计得到的自吸泵进行数值模拟分析,分析结果表明:该泵运行时,流线和压力分布均匀,满足大流量滴灌和小流量喷灌的设计要求,且外特性曲线达到设计要求,故所设计的喷灌与滴灌两用自吸泵满足设计要求.First,the conditions of the modern multi-pump design theory were introduced,the category of the general sense and special sense was defined,and the design criteria and optimization goals of the special operating mode design were cleared.According to the proportion of time of the specific dualuse self-priming pump sprinkler irrigation and drip irrigation,the optimization design method of the dual-use self-priming pump working condition was established base on the optimization target of minimizing the total energy consumption.On this basis,the entire possible performance curve was obtained according to the traditional design method of prediction.To meet the design goals of the two conditions,according to the influence of the volute to the pump performance,further adjustments were completed to the design of the volute.The numerical simulation analysis was carried out on the design of the self-priming pump and the computational fluid dynamics（CFD）software was used.The analysis results show that when the pump is in operation,streamline distribution and pressure distribution are uniform,which meets the design requirements of the large flow rate drip irrigation and low flow rate sprinkler irrigation,and the external characteristic curve meet the design requirements, therefore,the design of sprinkler irrigation and drip irrigation dual-use self-priming pump meet the design requirements.

关 键 词：喷灌 滴灌 两用自吸泵 多工况设计 数值模拟 

分 类 号：TH317[机械工程—机械制造及自动化]