应用电阻层系成像技术测量垂直管道气/液两相流分相含率  

Void Fraction Measurement of the Gas-Liquid Two-Phase Flows in Vertical Pipes Using Electrical Resistance Tomography

作　　者：董峰[1] 乔旭彤[1] 姜之旭[1] 徐苓安[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2004年第6期510-514,共5页Journal of Tianjin University：Science and Technology

基　　金：国家自然科学基金资助项目(50276043);"863"计划资助项目(2001AA413210).

摘　　要：通过对垂直管道中气/液两相流截面相含率测量影响因素的分析,以电阻层析成像系统为检测工具,提出了提取原始测量数据边界特征值的方法和描述气/液两相流截面相含率的特征函数,得到了气/液两相流的截面含气率.仿真计算与实验测试结果表明,在研究导电的液相为连续相的气/液两相流情况下的分相含率时,上述方法是一种有效的测量手段.Based on the analysis of the factors influencing void fraction of gas-liquid two-phase flows in vertical pipes, using Electrical Resistance Tomography (ERT), a method of analyzing the data characteristics of boun- (dary) voltage of ERT and extracting the characteristic value is proposed. Furthermore the characteristic function of void fraction of gas-liquid two-phase flows is presented. Accordingly void fraction of gas-liquid two-phase flows in vertical pipes can be obtained. The emulational and experimental results show that the accuracy of void fraction measurement is satisfactory and this method is valid for gas-liquid two-phase flows in which the electric liquid is continuous phase.

关 键 词：两相流 分相含率 电阻层析成像 特征提取 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]