Measurment of gas-liquid two-phase slug flow with a Venturi meter based on blind source separation  

基于盲源分离与文丘里流量计的气液两相段塞流测量(英文)

作　　者：王微微 梁霄 张明柱 

机构地区：[1]College of Information and Control Engineering, China University of Petroleum

出　　处：《Chinese Journal of Chemical Engineering》2015年第9期1447-1452,共6页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(51304231);the Natural Science Foundation of Shandong Province(ZR2010EQ015)

摘　　要：We propose a novel flow measurement method for gas–liquid two-phase slug flow by using the blind source separation technique. The flow measurement model is established based on the fluctuation characteristics of differential pressure(DP) signals measured from a Venturi meter. It is demonstrated that DP signals of two-phase flow are a linear mixture of DP signals of single phase fluids. The measurement model is a combination of throttle relationship and blind source separation model. In addition, we estimate the mixture matrix using the independent component analysis(ICA) technique. The mixture matrix could be described using the variances of two DP signals acquired from two Venturi meters. The validity of the proposed model was tested in the gas–liquid twophase flow loop facility. Experimental results showed that for most slug flow the relative error is within 10%.We also find that the mixture matrix is beneficial to investigate the flow mechanism of gas–liquid two-phase flow.We propose a novel flow measurement method for gas–liquid two-phase slug flow by using the blind source separation technique. The flow measurement model is established based on the fluctuation characteristics of differential pressure（DP） signals measured from a Venturi meter. It is demonstrated that DP signals of two-phase flow are a linear mixture of DP signals of single phase fluids. The measurement model is a combination of throttle relationship and blind source separation model. In addition, we estimate the mixture matrix using the independent component analysis（ICA） technique. The mixture matrix could be described using the variances of two DP signals acquired from two Venturi meters. The validity of the proposed model was tested in the gas–liquid twophase flow loop facility. Experimental results showed that for most slug flow the relative error is within 10%.We also find that the mixture matrix is beneficial to investigate the flow mechanism of gas–liquid two-phase flow.

关 键 词：Two-phase slug flow Flow measurement Differential pressure Blind source separation Independent component analysis 

分 类 号：TQ028[化学工程]