脉冲液体射流泵能量平衡的研究

Study on energy balance of pulsed liquid jet pump

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.