导流式气泡泵理论模型与实验研究

摘要

Based on homogeneous phase flow theory,theoretical model on guided bubble pump operating in adiabatic slug flow was established.Simultaneously,taking saturated water as the working fluid,the experimental research of bubble pump was carried out in a steady-state process.The experimental result is in consistent with the theoretical analysis result.It showed that the flow pattern in bubble pump riser would change with the increase of gas volumetric flow rate or submergence ratio,which caused the deviation between experimental and theoretical curves.However,this transition slows down the growing speed and has no inhibited effect on liquid volumetric flow rate.Among total pressure drop of system,the friction resistance drop of two phases flow is the most influential factor.%应用两相流分相模型理论,建立了导流式气泡泵在绝热弹状流工况下工作特性的理论模型.并以饱和水为工质,对该气泡泵的稳态工作过程进行了实验研究,实验结果与理论分析结果相一致.结果表明,随着气体流量或沉浸比的增加,提升管中两相流流型将发生改变,从而使实验结果与理论分析曲线逐渐偏离；流型改变使液体提升量随气体流量增加的增速减缓,对液体提升量并无抑制作用；系统的总压降中,影响最大的是提升管中两相流的摩擦阻力.