| 大尺寸密闭容器内天然气的爆炸超压场 |
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| 引用本文： | 樊保龙,白春华,王博,高康华,李斌.大尺寸密闭容器内天然气的爆炸超压场[J].爆炸与冲击,2018,38(2):404-408. |
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| 作者姓名： | 樊保龙 白春华 王博 高康华 李斌 |
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| 作者单位： | 北方爆破科技有限公司,北京100089;北京理工大学爆炸科学与技术国家重点实验室,北京100081;北京理工大学爆炸科学与技术国家重点实验室,北京,100081;陆军工程大学爆炸冲击防灾减灾国家重点实验室,江苏南京,210007;北京理工大学爆炸科学与技术国家重点实验室,北京100081;南京理工大学化工学院,江苏南京210094 |
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| 基金项目： | 国家自然科学基金项目，江苏省科技厅计划项目 |
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| 摘 要： | 以天然气体积分数在爆炸下限附近的天然气-空气混合物爆炸超压状态场为着眼点，在大尺寸容器中轴向和径向位置布置压力传感器，实时记录天然气体积分数不同的天然气-空气混合物爆炸后的超压发展过程。经过数据处理发现，在天然气爆炸下限附近，存在3种压力波形式且存在前导冲击波和二次发展形成的燃烧波共存的状态。不同天然气体积分数条件下爆炸压力沿容器轴向和径向发展过程存在明显差异，天然气爆炸径向超压变化不明显，轴向超压的发展趋势更适用于天然气爆炸发展过程的描述。
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| 关 键 词： | 大尺寸 密闭容器 天然气 爆炸 超压 |
| 收稿时间： | 2016-06-29 |
Explosion overpressure field of natural gas in a large-scaled confined vessel |
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| FAN Baolong,BAI Chunhua,WANG Bo,GAO Kanghua,LI Bin.Explosion overpressure field of natural gas in a large-scaled confined vessel[J].Explosion and Shock Waves,2018,38(2):404-408. |
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| Authors: | FAN Baolong BAI Chunhua WANG Bo GAO Kanghua LI Bin |
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| Institution: | 1.North Blasting Technology Co. Ltd., Beijing, 100089, China2.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China3.State Key Laboratory for Explosion & Impact and Disaster Prevention & Mitigation, The Army Engineering University of PLA, Nanjing 210007, Jiangsu, China4.School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China |
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| Abstract: | Focusing on the state of explosion overpressure field,a number of pressure transducers were installed in the axial and radial directions in the large-scale space.The explosion overpressure fields at different volume fractions of natural gas were recorded.When the volume fraction of natural gas was close to the lower limit of expolsion,three types of pressure curves existed.Former shock wave generated at the beginning of the explosion process was found as well with the further combustion wave.The developments in the axial and radial directions were found different obviously.Different from the instability of pressure in the radial direction,the overpressure development in the axial direction was more suitable to describe the whole developing process of overpressure. |
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