脉冲液体射流泵能量平衡的研究  

Study on energy balance of pulsed liquid jet pump

作　　者：高传昌[1] 张晋华[1] 刘新阳[1] 赵礼[1] 

机构地区：[1]华北水利水电学院,郑州450011

出　　处：《水力发电学报》2011年第5期199-206,共8页Journal of Hydroelectric Engineering

基　　金：水利部公益性行业科研专项经费资助项目(200801011);国家自然科学基金资助项目(50379013)

摘　　要：运用能量平衡原理,导出了脉冲液体射流泵内脉冲液体能量损失的时均压力比表达式,分析了影响泵内能量转换与耗损的主要因素,研究了主要流动部件的能量损失变化对射流泵性能的影响,并进行了相应的试验研究。结果表明:理论分析与试验结果基本一致,验证了脉冲射流是提高射流泵效率的有效途径。By the energy balance theorem,a formula of time-average pressure ratio of energy loss for pulsed liquid in a pulsed-liquid jet pump was derived,and the main factors which influenced the energy conversion and energy loss in the pump was analyzed.The influence of energy losses in the flow passage on the pump＇s performance was studied,and an experimental test was conducted.Results show that the theoretical calculations agree with the measurements,and that pulsed jet is an effective way to enhance the jet pump＇s efficiency.

关 键 词：水力机械 脉冲液体 射流泵 能量平衡 时均性能 

分 类 号：TV136[水利工程—水力学及河流动力学]