密闭容器甲烷-空气混合物爆炸的尺寸效应

doi:10.16265/j.cnki.issn 1003-3033.2021.01.009

中国安全科学学报 ›› 2021, Vol. 31 ›› Issue (1): 60-66.doi: 10.16265/j.cnki.issn 1003-3033.2021.01.009

密闭容器甲烷-空气混合物爆炸的尺寸效应

王志荣教授, 孙培培, 唐振华, 张锎

南京工业大学安全科学与工程学院,江苏南京 211816

收稿日期:2020-10-16 修回日期:2020-12-16 出版日期:2021-01-28 发布日期:2021-07-28
作者简介:王志荣 (1977—),男,湖北广水人,博士,教授,博士生导师,主要从事火灾与爆炸灾害防治、城市与工业安全、化工安全、火灾安全等方面的研究。E-mail:wangzhirong@njtech.edu.cn。
基金资助:
国家自然科学基金项目资助(52074159);江苏省研究生科研与实践创新计划项目(SJCX20_0381)。

Size effect of methane-air mixture explosion in closed vessel

WANG Zhirong, SUN Peipei, TANG Zhenhua, ZHANG Kai

College of Safety Science and Engineering, Nanjing Tech University, Nanjing Jiangsu 211816, China

Received:2020-10-16 Revised:2020-12-16 Online:2021-01-28 Published:2021-07-28

摘要/Abstract

摘要： 为探究密闭容器甲烷爆炸的尺寸效应及其变化特征,以及预防和控制密闭容器甲烷爆炸事故,通过改变圆柱形容器体积和管道的长度和直径,研究密闭容器甲烷-空气混合物爆炸压力变化特性;采用多元线性回归模型,分析最大爆炸压力及最大压力上升速率与管径和管长的关系。结果表明:在圆柱形容器中,最大爆炸压力上升速率随容器体积的增大而减小;随着管道内径的增加,管道末端的最大爆炸压力和最大爆炸压力上升速率均下降;管道长度增加,管道末端最大爆炸压力和最大爆炸压力上升速率均增加。试验得到最大爆炸压力及最大压力上升速率的无量纲预测模型。

关键词: 密闭容器, 甲烷-空气混合物爆炸, 尺寸效应, 容器体积, 最大爆炸压力

Abstract: In order to explore size effect and change laws of methane explosions in closed vessel, and to better prevent and control such accidents, explosion pressure characteristics of methane-air mixture in a closed vessel were studied by changing length and diameter of cylindrical container and pipes. Then, a multiple linear regression model was used to analyze relationship between maximum explosion pressure and its rise rate with pipe diameter and length. The results show that in a cylindrical vessel, maximum explosion pressure rise rate decreases along with increase of vessel volume, and both it and its rise rate at end of pipes will decrease as inner diameter of pipes increases, but will increase as pipe length increases. A dimensionless predictive model of maximum explosion pressure and maximum pressure rise rate is obtained through experiment.

Key words: closed vessel, methane-air mixture explosion, size effect, container volume, maximum explosion pressure

中图分类号:

X932

王志荣, 孙培培, 唐振华, 张锎. 密闭容器甲烷-空气混合物爆炸的尺寸效应[J]. 中国安全科学学报, 2021, 31(1): 60-66.

WANG Zhirong, SUN Peipei, TANG Zhenhua, ZHANG Kai. Size effect of methane-air mixture explosion in closed vessel[J]. China Safety Science Journal, 2021, 31(1): 60-66.

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密闭容器甲烷-空气混合物爆炸的尺寸效应

Size effect of methane-air mixture explosion in closed vessel

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