[1]李孝斌,李会荣,何 昆,等.甲烷爆炸感应期内C2自由基及其特征光谱分析[J].西安科技大学学报,2015,(02):248-252.[doi:10.13800/j.cnki.xakjdxxb.2015.0219]
 LI Xiao-bin,LI Hui-rong,HE Kun,et al.Analysis of C2 and its characteristic spectrum in the induction period of methane explosion[J].Journal of Xi'an University of Science and Technology,2015,(02):248-252.[doi:10.13800/j.cnki.xakjdxxb.2015.0219]
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甲烷爆炸感应期内C2自由基及其特征光谱分析(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2015年02期
页码:
248-252
栏目:
出版日期:
2015-03-10

文章信息/Info

Title:
Analysis of C2 and its characteristic spectrum in the induction period of methane explosion
文章编号:
1672-9315(2015)02-0248-05
作者:
李孝斌1李会荣1何 昆1成连华2林海飞2
1.中国人民武装警察部队学院 消防工程系,河北 廊坊 065000;
2.西安科技大学 能源学院,陕西 西安 710054
Author(s):
LI Xiao-bin1LI Hui-rong1HE Kun1CHENG Lian-hua2LIN Hai-fei2
1.Dept. of Fire Engineering,Chinese People's Armed Police Forces Academy,Langfang 065000,China;
2.College of Energy Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China
关键词:
甲烷爆炸 感应期 C2自由基 特征光谱
Keywords:
methane explosion induction period C2 characteristic spectrum
分类号:
TD 712.7
DOI:
10.13800/j.cnki.xakjdxxb.2015.0219
文献标志码:
A
摘要:
为推进甲烷爆炸感应期内探测与抑制技术的发展,利用小尺度气体爆炸实验装置进行了12个体积分数的甲烷爆炸实验,采用光谱比较法、谱线强度比较法和加权因子法等火焰发射光谱分析方法对实验得到的甲烷爆炸感应期内C2自由基及其特征光谱出现频率、相对强弱等特征进行分析。研究表明,甲烷爆炸感应期内存在C2自由基,并且Phillips近红外系统谱带、Mulliken's系统谱带、Swan系统谱带、Fox-Herzberg系统谱带出现概率较高,被探测到的概率较大,适宜用作辨识甲烷爆炸信号。C2含量在甲烷体积分数9.5%附近时最大,在9.5%之前,随着甲烷体积分数的增加而增大,在达到9.5%之后,随着甲烷体积分数增加而减小。实验条件下C2各特征光谱中,Phillips近红外系统谱带、Swan系统谱带、Fox-Herzberg系统谱带分别在771,590,289 nm处特征光谱相对较强,这些光谱强度较强的谱线适于用作辨识自由基和瓦斯爆炸信号的依据。
Abstract:
The characteristic spectrum of C2 in the induction period of methane explosion was analyzed by comparison method of spectrum and spectral line intensity and weighted factor method,which belongs to the small-scale methane explosion experiments with 12 different methane concentrations.This study was helpful for developing the technique of the gas explosion detection and suppression.It is educed that C2 exists in the flame of methane explosion in induction period.Phillips bands,Mulliken's bands,Swan bands and Fox-Herzberg bands in the flame appear frequently with a high detecting probability.So,the characteristic spectrum of these bands can be used for detecting methane explosion.The content of C2 gets the most when the methane concentration gets 9.5%,before that the content of C2 increases with the methane concentration increasing,and after that the content of C2 decreases with the methane concentration increasing.In the experiment,the spectral intensity of Phillips bands,Swan bands,and Fox-Herzberg bands is relatively bigger at 771,590,289 nm respectively,which can be used to identify the radicals and the signals of methane explosion.

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备注/Memo

备注/Memo:
基金项目:国家自然科学基金项目(51104164,51174157); 武警学院青年教师计划课题(QNJS201324-25) <
通讯作者:李孝斌(1980-),男,河北衡水人,副教授,E-mail:wjxy_lxb@163.com
更新日期/Last Update: 2015-03-15