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Visualized Measurement Instrument of Two-Phase Flow Based on Electrical Capacitance Tomography Technique

CHEN De-yun,HUANG Jia-ding,WU Rui-fen,YU Xiao-yang(Harbin University of Science and Technology,Harbin 150080,China)  
To aim at measurement problem of parameters for ECT system of oil-water two-phase flow,the mathematic model of the oil-water two-phase distribution information is established based on double integral infinitesimal principle.An ECT measurement system of 8-electrode oil-water two-phase flow is set up that is comprised of a measurement circuit with stray-capacitance-resistance and a 80C32 SCM,both of which controls the measurement among the pole plates and the capture system.The image reconstruction for oil-water two-phase cross-sectional image and the calculating of oil-water two-phase water content can be accomplished by an adaptive threshold image reconstruction algorithm,and the precision of reconstruction is about 1%,which can meet the need of identification of flow regime for oil-water two-phase flow.Therefore,it offers a new method for the visualized measurement of oil-water two-phase flow parameters.
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