Gas-liquid two-phase flow metering by time-sharing method

The stable relationship between the extracted stream and the measured multiphase flow is a crucial factor for the sampling measurement method.To assure that the sampled fluid was identical to the fluid measured,on the basis of the time-sharing and flow division theory,the corresponding rotational wheel type distributor was developed.Extensive experiments were carried out in an air-water two-phase flow loop,and the flow patterns observed during the tests included wavy flow,annular flow and slug flow.The experimental results show that the liquid flow rate extracted is linearly related with that of the main pipe,and the average measurement errors of the liquid flow rate and gas flow rate were 7.3% and 7.5% respectively.