摘要
为定量分析可燃气体组分,测量待测气体流经特制黏度传感部件后产生的压差响应信号,根据泊肃叶定律及混合气体黏度理论模型定量关系反演获得可燃气体体积分数,并利用不同体积分数H;开展测量试验。结果表明:基于混合气体黏度理论关系,可利用测量压差拟合计算待测气体浓度值,且理论计算浓度与基准值之间绝对偏差不超过±1.0%;在气体样品体积分数大于15%时,整体测量相对误差不超过±3%;定量检验结果表明:该方法具有较高的准确性,能够准确分析可燃气体浓度。
In order to make a quantitative analysis on gas composition, response signals of pressure drop generated by gas samples were measured after they flew through a specially designed viscosity sensor. Then, according to Poiseuille’s Law and theoretical model of gas mixture viscosity, quantitative analysis was conducted to obtain concentration of combustible gas, and measurement experiments were carried out for different concentration of hydrogen. The results show that concentration of gas samples can be calculated by utilizing measured pressure drop based on theoretical relationship of mixed gas viscosity, and the absolute deviation between measurement results and benchmark concentration are no more than ±1.0 %. And the relative error is no more than ±3% when volume fraction is over 15%. It has been proved by the quantitative test results that the proposed method has a high accuracy and is capable of predicting volume fraction of combustible gas accurately.
作者
杨淞成
王纪哲
王丽华
张洪铭
赵兰明
YANG Songcheng;WANG Jizhe;WANG Lihua;ZHANG Hongming;ZHAO Lanming(School of Environmental and Chemical Engineering,Jiangsu Ocean University,Lianyungang Jiangsu 222000,China;State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei Anhui 230026,China)
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2022年第3期131-136,共6页
China Safety Science Journal
基金
火灾科学国家重点实验室开放课题项目(HZ2017-KF10)
江苏省自然科学基金资助(BK20201030)
江苏省高校自然科学研究面上项目(17KJB620001)
江苏省产学研合作项目(BY2021369)。
关键词
混合气体黏度
可燃气体浓度
测量方法
泊肃叶定律
气体压差
gas mixture viscosity
combustible gas concentration
measurement method
Poiseuille’s Law
gas pressure drop