Design and research of gas-liquid separator suitable for pulsating conditions
In this article,numerical simulation and experimental research are carried out on the effect of the non-cover,cy-lindrical,"column+cone"vortex hood on the gas-liquid separator's separation performance and flow-field characteristics under the flow-pulsation condition.The pulsation attenuation rate(ηp),an evaluation index of the swirling field's pulsation attenuation degree,is proposed,and its value is inversely proportional to the pulsation attenuation performance.The research results show that under the flow-pulsation condition,the"column+cone"vortex hood is extraordinary to improve the swirling field's stabili-ty.The pulsation attenuation rate is 0.010 28,and the separation efficiency is as high as 95.15％.At the same time,the high-speed camera technology is used to visually observe the gas nucleus'movement and changes in the two-phase flow field.Efforts are made to work out the law of the gas nucleus'movement in the swirling field under the flow-pulsation condition.It is divided into 4 stages(continuation stage,convergence stage,fusion stage,final stage);it is found that the"column+cone"vortex hood's gas nucleus has a significant tendency to converge toward the central axis,forming an upwardly-moving air column,which has a significant inhibitory effect on the pulsating flow in the swirling field.
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