双锥流量计气液两相流测量模型研究  

On a flowrate measurement model of gas/liquid two-Phase flow using double-cone flowmeter

作　　者：朱跃[1] 谢代梁[1] 陶姗[2] 梁国伟[1] 

机构地区：[1]中国计量学院计量测试工程学院,浙江杭州310018 [2]杭州职业技术学院友嘉机电学院,浙江杭州310018

出　　处：《中国计量学院学报》2011年第3期222-227,共6页Journal of China Jiliang University

基　　金：国家自然科学基金资助项目(No.11002137);浙江省自然科学基金资助项目(No.Y1091052)

摘　　要：设计了一种直径比为0.8的新型双锥流量计.在管道内径为50 mm、干度范围为0.002 5～0.04的工况下,采用该流量计对水平管道气液两相流流量的测量进行了实验研究.在水流量标准装置上对该流量计进行了标定,分析了其流出系数.基于均相流和James模型,提出了一种混合密度的修正方法.利用双锥流量计的差压信号,分别对均相流模型、James模型以及修正的模型进行气液两相流总流量测量误差分析.实验结果显示,经密度修正的模型对总流量测量的相对误差可控制在6%以内,均方根误差为2.94%,表明修正后的模型可对总流量进行有效的测量,双锥流量计用于气液两相流测量可以获得较好的效果.A new double-cone flowmeter with diameter ratio of 0.8 was designed.The experimental studies were conducted on the gas/liquid two-phase flow at the condition of the gas mass fraction ranged from 0.002 5 to 0.04 in the 50 mm diameter horizontal pipe by using this flowmeter.It was calibrated on the water standard facility and the discharge coefficient was analysized.A modified method of mix density was proposed based on homogeneous model and James model.The total flowrate was measured using the differential pressure signals.Measurement errors of the homogeneous model,James model and the proposed model were analyzed.The results show that relative error of the modified model is within 6% and the mean square error is 2.94%,which indicates that the new model is effective to the total flowrate measurement and the double-cone flowmeter can be applied in gas/liquid two-phase flow measurement.

关 键 词：两相流 双锥流量计 测量模型 

分 类 号：TB9-55[一般工业技术—计量学]