瓦斯爆炸感应期内CO/NO/H_2O/O_2/CO_2特征光谱实验  

Experimental on CO/NO/H_2O/O_2/CO_2 and its characteristic Spectrum in the induction period of gas explosion

作　　者：李孝斌[1] 李会荣[1] 何昆[1] 成连华[2] 林海飞[2] 

机构地区：[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

出　　处：《辽宁工程技术大学学报（自然科学版）》2013年第10期1314-1318,共5页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(51104164;51174157);武警学院青年教师计划课题(QNJS201324-25)

摘　　要：为解决瓦斯爆炸感应期内探测技术中探测对象特征问题.采用小尺度实验和光谱分析的方法,分析了12个体积分数的51组瓦斯爆炸实验光谱数据.结果表明:瓦斯爆炸感应期内,CO的Fourtb Positive谱带,NO的γ谱带,H2O的谱带,O2的Atmospberic谱带出现频率较高,被探测到的概率较大,适宜作为辨识瓦斯爆炸信号的特征光谱.瓦斯爆炸感应期内爆炸过程中CO、NO含量在9.5%瓦斯体积分数附近时最小,H2O含量在该瓦斯体积分数附近时最大.实验条件下各分子出现10次以上的特征光谱中CO的Fourtb Positive谱带光谱强度随着波长的增加而减小,在208 nm处相对最强;NO的γ谱带在285 nm、258 nm处、H2O谱带在966 nm、933 nm、590 nm处、O2的Atmospberic谱带在768 nm处相对较强.The characteristics of gas explosion in the induction period needs to be studied for the detection technique of gas explosion. The spectrum data of methane explosion obtained from small-scale experiment was analyzed by spectrum analysis of 51 groups of experiments with 12 different methane concentrations. The result of study shows that the CO Fourtb Positive bands, NO γ bands, H2O bands and O2 Atmospberic bands in the flame appear with high frequency, and the probability of being detected is high. Therefore, the characteristic spectrum of these bands can be used for detecting methane explosion. When the concentration of methane getting nearby 9.5%,the contents of CO and NO get the least, and the content of H2O gets the most. In the experiment, the spectral intensity of CO Fourtb Positive bands decreases with the increase of wavelength, and is relatively bigger at 208nm.The spectral intensity of NO γ bands is relatively bigger at 285nm and 258nm. The spectral intensity of H2O bands is relatively bigger at 966nm、933nm and 590nm. The spectral intensity of O2 Atmospberic bands is relatively bigger at 768nm.

关 键 词：瓦斯爆炸 感应期 特征光谱 光谱分析 火焰发射光谱 光谱强度 谱带 CO/NO/H2O/O2/CO2 

分 类 号：TD712.7[矿业工程—矿井通风与安全]