基于S型皮托管的烟气流量计量方法研究  

Study on Flue Gas Flow Measurement Method Based on S-Type Pitot Tube

作　　者：许瑞祥 翟恒涛 王煦 肖远欢 张天亮 彭亮 薛蕾 XU Ruixiang;ZHAI Hengtao;WANG Xu;XIAO Yuanhuan;ZHANG Tianliang;PENG Liang;XUE Lei(Shandong Institute of Metrology,Jinan 250014,China;Shandong Measurement Test Center,Jinan 250014,China)

机构地区：[1]山东省计量科学研究院,济南250014 [2]山东省计量检测中心,济南250014

出　　处：《计量科学与技术》2023年第1期39-44,共6页Metrology Science and Technology

摘　　要：为了研究烟气流量实测计量方法,分析了当前主要碳排放核查方法的优劣,根据实测法烟气流量测量原理,提出利用S型皮托管测量烟气流量的方法。通过对皮托管测速原理的研究,根据速度面积法流量测量方法,提出了等面积和等距离两种积分方法,对两种积分方法中皮托管的安装位置、烟道截面测量点及其分布进行比较。为验证两种积分方法的合理性,依托实验室风洞装置对两种积分方法测得的结果进行分析比较,得出两种积分方法在低流速下偏差较大,在高流速下偏差均在0.5%左右,为实测法烟气流量的精确测量提供技术支撑。To investigate the measurement method of flue gas flow, the advantages and disadvantages of current main carbon verification methods are analyzed. The background and significance of carbon emission research, as well as the progress of related research at home and abroad, are described. A method for measuring flue gas flow using an S-type pitot tube is proposed based on the measurement principle of flue gas flow. Two integration methods of equal area and equal distance are proposed based on the study of pitot tube velocity measurement principle and the flow measurement method of velocity area method. The installation position of the pitot tube, the measurement points of the flue section, and their distribution in the two integration methods are compared. The rationality and advantages of the two integration methods of equal area and equal distance are analyzed and compared theoretically. To verify the rationality of the two integration methods, the results measured by the two integration methods are analyzed and compared based on the laboratory wind tunnel device. It is concluded that the deviation of the two methods is large at low flow rate, and the deviation of the two integration methods is about 0.5% at high flow rate, which provides technical support for the accurate measurement of measured smoke and air flow. The study suggests that the proposed measurement method using S-type pitot tube is a reliable and effective way for measuring flue gas flow.

关 键 词：计量学 固定排放源 烟气流量 S型皮托管 速度面积法 

分 类 号：TB937[一般工业技术—计量学]