凝析天然气流量测量新方法  

New Method for Measuring Flow Rate of Condensed Natural Gas

作　　者：王微微[1] 朱小倩[1] 王平[1] 樊尚春[2] 任东顺 

机构地区：[1]中国石油大学(华东)信息与控制工程学院,山东东营257061 [2]北京航空航天大学仪器科学与光电工程学院,北京100083 [3]太原太航流量工程公司,山西太原030006

出　　处：《自动化仪表》2010年第8期36-37,40,共3页Process Automation Instrumentation

基　　金：中央高校基本科研业务费专项基金资助项目(编号:09CX04047A)

摘　　要：基于多个差压波动信号,提出了一种凝析天然气流量测量新方法。该方法在实际测量过程中,首先对当前流型进行辨识;然后应用与流型对应的流量测量模型对已辨识的流型进行流量计算。流量测量模型中的差压值由节流式流量计提供的多个差压波动信号中分离得出,分离矩阵的各矩阵元素由差压波动信号的统计特征值求得。实验结果表明,凝析天然气流量测量新方法是有效的,其测量精度满足工业应用的要求。Based on multiple differential pressure（DP） fluctuation signals,the new measuring method for flow rate of condensed natural gas is proposed.In practical measuring process,by this method,current flow pattern is identified;then by using corresponding flow measuring model of the flow pattern,the flow rate is calculated for this identified flow pattern.The value of differential pressure in the model is obtained by separating multiple DP fluctuation signals provided from throttle flowmeters;each element of the separation matrix is accomplished with the statistics eigen-value of DP fluctuation signals.The result of experiments indicate that this new method is effective,its measurement accuracy meets the requirement for industrial applications.

关 键 词：两相流 流量 流型 差压波动信号 独立分量分析 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]