双向竖井贯流泵装置优化设计与实验

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1、双向竖井贯流泵装置优化设计与实验石丽建1 刘新泉2 汤方平1姚悦铃3 谢荣盛1 张文鹏11扬州大学水利与能源动力工程学院　扬州225100；2江苏省水利勘测设计研究院有限公司　扬州225100；3浙江同济科技学院信息系　杭州311231摘要：为探求双向竖井流道水力设计方法和完善双向竖井流道优化型式，对双向竖井流道进行内外型线及分叉段型式进行优化设计。基于标准k-ε紊流模型和雷诺时均的N-S方程，结合龙山水力枢纽工程运用CFD软件对双向竖井贯流泵装置进行优化设计。计算并比较了不同竖井出水流道方案的水力损失，揭示了不同方案竖井流道内部各段水

2、力损失分布规律，比较分析了不同方案竖井出水流道内部流场及速度分布规律，最后结合模型试验结果，证实了双向竖井流道优化设计的可靠性。优化结果表明：竖井分叉段设计好坏直接决定竖井后半段水力损失，通过调整竖井内外轮廓线可以有效减小竖井出水流道的水力损失，提升贯流泵装置外特性。优化后竖井贯流泵装置反向运行最高效率达60.5％，较优化前提高3.7％；正向效率达到 72.18％，较优化前提高1.67％。模型试验反向运行最高效率57.56％，正向运行最高效率72.67％。双向泵；竖井流道；优化设计；数值计算OptimizeDesignandExperi

3、mentalAnalysisofBidirectionalShaftTubularPumpDeviceShiLijian1LiuXinquan2TangFangping1YaoYuelin3XieRongsheng1ZhangWenpeng1(1. SchoolofHydraulicEnergyandPowerEngineering,YangzhouUniversity,Yangzhou225100,China 2.JiangsuSurveyingandDesignInstituteofWaterResourcesCo.Ltd,Yang

4、zhou225100,China 3.ZhejiangTongjiVocationalCollegeofScienceandTechnology,Hangzhou311231,China）Abstract:Toexplorehydraulicdesignmethodandimproveoptimizationtypeofthebidirectionalshaftpassage,thispaperdotheoptimizationdesignresearchofinsideandoutsidelineandbifurcationsegme

5、nttypeofthebidirectionalshaftpassage.Basedonthestandardk-εturbulencemodelandthereynoldsaveragedN-Sequation,combinedlongsanhydraulicprojectusingCFDsoftwaretooptimizeanddesignthebidirectionalshafttubularpumpdevice.Calculateandcomparethehydrauliclossandvelocitydistributioni

6、ndifferentshaftoutletconduitschemes,revealsthedifferentsegmentshydrauliclossdistributionofdifferentshaftoutletconduitschemes.Finally,combinedwiththemodeltestresults,confirmedthereliabilityoftheoptimizationdesignofthebidirectionalshaftflowpassage.Optimizationresultsshowth

7、attheshaftbifurcatedsegmentdesigndirectlydeterminesthehydrauliclossofthelatterpartshaftpassage.Throughadjustingtheshaftinnerandoutercontourlinescaneffectivelyreducethehydrauliclossoftheshaftoutletconduit,andenhancethetubularpumpdevicehydrauliccharacteristics.Theefficienc

8、ycurveoftheoptimizedschemeishigher,andtherangeofthehighefficiencyareaiswiderthanthatoftheinitialscheme,