甲烷爆炸感应期内火焰光谱特征分析方法研究

发布时间：2018-05-20 11:55

本文选题：光谱特征分析方法 + 甲烷爆炸火焰　；参考：《光谱学与光谱分析》2015年08期

【摘要】：基于目标发射光谱分析法的原理,通过分析小尺寸实验平台上测得的体积分数10%的甲烷爆炸火焰光谱数据,提出甲烷爆炸火焰光谱特征分析方法,包括频域特征参数光谱密度、波段辐射光强度、波段平均及偏差,时域特征参数波段辐射能量、时间段平均及偏差和特性参数偏度、峰度、半宽的计算方法;分析得出当甲烷爆炸火焰光谱波长值为某些定值时,光谱密度在1nm范围内在正向与负向之间转换,表明光强密集程度变化剧烈;甲烷爆炸火焰光谱波段定积分在550~900nm波段最强;甲烷爆炸火焰光谱信号随着波长的增大可测时间增长,信号强度在达到峰值后整体呈衰减趋势,在衰减过程中间隔出现依次减弱的强度增强;研究结果表明目标发射光谱分析法可应用于甲烷爆炸感应期内火焰光谱的动态半定量分析,分析得出的光谱特征可作为检测甲烷爆炸火焰的判据。
[Abstract]:Based on the principle of target emission spectrum analysis, by analyzing the 10% volume fraction methane explosion flame spectrum data measured on a small scale experimental platform, a method for analyzing methane explosion flame spectral characteristics, including the spectral density of frequency domain characteristic parameters, is proposed. The calculation method of radiation intensity, band average and deviation, time domain characteristic parameter band radiation energy, time period average and deviation and characteristic parameter bias, kurtosis, half width; When the spectral wavelength of methane explosion flame is certain, the spectral density is converted between positive and negative in the range of 1nm, which indicates that the intensity of light density changes dramatically, and the spectral band integral of methane explosion flame is the strongest in 550~900nm band. The spectral signal of methane explosion flame increases with the increase of wavelength, and the signal intensity tends to decay after reaching the peak value, and the intensity increases with the interval of attenuation. The results show that the target emission spectrum analysis method can be applied to the dynamic semi-quantitative analysis of the flame spectrum during the methane explosion induction period, and the spectral characteristics obtained from the analysis can be used as criteria for the detection of methane explosion flame.
【作者单位】：中国人民武装警察部队学院研究生二队;中国人民武装警察部队学院消防工程系;
【基金】：国家自然科学基金项目(51104164)资助
【分类号】：X932

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