基于混合气体黏度的可燃气体浓度测量方法

doi:10.16265/j.cnki.issn1003-3033.2022.03.018

中国安全科学学报 ›› 2022, Vol. 32 ›› Issue (3): 131-136.doi: 10.16265/j.cnki.issn1003-3033.2022.03.018

基于混合气体黏度的可燃气体浓度测量方法

杨淞成¹(), 王纪哲¹, 王丽华¹, 张洪铭¹, 赵兰明¹^,²^,^**()

¹江苏海洋大学环境与化学工程学院,江苏连云港 222000
²中国科学技术大学火灾科学国家重点实验室,安徽合肥 230026

收稿日期:2021-12-09 修回日期:2022-02-12 出版日期:2022-08-23 发布日期:2022-09-28
通讯作者: 赵兰明
作者简介:
杨淞成 (1995—),男,浙江台州人,硕士研究生,研究方向为非选择性火灾气体探测技术。E-mail: schyang@163.com。
张洪铭讲师, 赵兰明讲师
基金资助:
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)

Concentration measurement of combustible gas mixture based on gas viscosity

YANG Songcheng¹(), WANG Jizhe¹, WANG Lihua¹, ZHANG Hongming¹, ZHAO Lanming¹^,²^,^**()

¹School of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang Jiangsu 222000, China
²State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei Anhui 230026, China

Received:2021-12-09 Revised:2022-02-12 Online:2022-08-23 Published:2022-09-28
Contact: ZHAO Lanming

摘要/Abstract

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H₂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。

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

Abstract:

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.

Key words: gas mixture viscosity, combustible gas concentration, measurement method, Poiseuille's Law, gas pressure drop

杨淞成, 王纪哲, 王丽华, 张洪铭, 赵兰明. 基于混合气体黏度的可燃气体浓度测量方法[J]. 中国安全科学学报, 2022, 32(3): 131-136.

YANG Songcheng, WANG Jizhe, WANG Lihua, ZHANG Hongming, ZHAO Lanming. Concentration measurement of combustible gas mixture based on gas viscosity[J]. China Safety Science Journal, 2022, 32(3): 131-136.

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H₂体积分数/%	H₂-空气混合气体压差响应
H₂体积分数/%	25组测量数据平均值/Pa	相对标准偏差/%
0	1 054.2	0.31
10	1 045.8	0.29
20	1 028.1	0.22
30	1 008.4	0.29
40	980.7	0.23
50	948.0	0.28
60	904.8	0.28
70	850.7	0.30
80	775.3	0.28
90	670.8	0.36
100	510.7	0.34

气样编号	基准体积分数/%	测量压差值/Pa	测量体积分数/%	绝对偏差/%	测量相对误差/%
1号	5	1 051.0	4.61	-0.39	-7.80
2号	15	1 034.1	15.38	0.38	2.53
3号	25	1 015.3	25.38	0.38	1.52
4号	35	994.5	34.60	-0.40	-1.14
5号	45	964.9	45.25	0.25	0.56
6号	55	931.1	54.84	-0.16	-0.29
7号	65	880.4	65.77	0.77	1.18
8号	75	816.1	75.79	0.79	1.05
9号	85	722.8	85.83	0.83	0.98
10号	95	594.1	94.86	-0.14	-0.15

基于混合气体黏度的可燃气体浓度测量方法

Concentration measurement of combustible gas mixture based on gas viscosity

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