粉尘云电火花最小点火能的统计分析  

Statistical Analysis of Minimum Electrostatic Spark Ignition Energy of Dust Cloud

作　　者：李磊[1] 刘庆明[1] 高克平[1] 汪建平[1] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《高压物理学报》2014年第5期577-584,共8页Chinese Journal of High Pressure Physics

基　　金：科技部973项目(2011CB706900);爆炸科学与技术国家重点实验室重点课题基金(YBKT 11-03)

摘　　要：基于统计分析的Logistic回归模型,应用以概率表示粉尘云最小点火能的计算方法,在容积为1.28L的Mike 3管内对不同浓度的烟酸粉尘-空气混合物进行了最小点火能测试实验,利用SPSS软件计算得到了各浓度下烟酸粉尘云点火成功概率为10%和50%时的最小点火能。结果表明,烟酸粉尘云最小点火能随浓度的增大呈现先减小后增大的趋势,最后保持在一定的能量范围内。与其他标准的计算结果相比,这种方法给出的结果更符合实际情况,也能满足不同生产环境对安全控制的需要。According to the logistic regression model based on statistical analysis, the experiments on the minimum ignition energy of different concentrations of nicotinic acid dust-air mixtures have been conducted in the Mike 3 tube by the calculation method of the minimum ignition energy of dust cloud which represented by probability,the volume of Mike 3 tube is 1.28 L. Utilizing SPSS software, the minimum ignition energy of various concentrations of nicotinic acid dust cloud when the ignition prob- abilities are 10% and 50% has been calculated. The results show that the minimum ignition energy of nicotinic acid dust cloud has a tendency to first decrease and then increase with increasing concentra- tions, finally maintain at a certain energy range. Compared with other standard calculations, the view- point of ignition as a statistical phenomenon appears to be more consistent with the test data in engi- neering, it can also meet the needs of different production environments for security control.

关 键 词：粉尘爆炸 最小点火能 LOGISTIC回归 点火成功概率 点火测试标准 烟酸粉尘云 

分 类 号：O389[理学—流体力学] TQ560.7[理学—力学]