20 L近球形容器中微米级铝粉的爆炸特性

陈晓坤 张自军 王秋红 邓军 李海涛 徐青峰

陈晓坤, 张自军, 王秋红, 邓军, 李海涛, 徐青峰. 20 L近球形容器中微米级铝粉的爆炸特性[J]. 爆炸与冲击, 2018, 38(5): 1130-1136. doi: 10.11883/bzycj-2017-0101
引用本文: 陈晓坤, 张自军, 王秋红, 邓军, 李海涛, 徐青峰. 20 L近球形容器中微米级铝粉的爆炸特性[J]. 爆炸与冲击, 2018, 38(5): 1130-1136. doi: 10.11883/bzycj-2017-0101
CHEN Xiaokun, ZHANG Zijun, WANG Qiuhong, DENG Jun, LI Haitao, XU Qingfeng. Explosion characteristics of micro-sized aluminum dust in 20 L spherical vessel[J]. Explosion And Shock Waves, 2018, 38(5): 1130-1136. doi: 10.11883/bzycj-2017-0101
Citation: CHEN Xiaokun, ZHANG Zijun, WANG Qiuhong, DENG Jun, LI Haitao, XU Qingfeng. Explosion characteristics of micro-sized aluminum dust in 20 L spherical vessel[J]. Explosion And Shock Waves, 2018, 38(5): 1130-1136. doi: 10.11883/bzycj-2017-0101

20 L近球形容器中微米级铝粉的爆炸特性

doi: 10.11883/bzycj-2017-0101
基金项目: 

国家自然科学基金青年科学基金项目 51504190

国家重点研发计划项目 2016YFC0800102

陕西省国际科技合作与交流计划项目 2016KW-070

详细信息
    作者简介:

    陈晓坤(1961-), 男, 教授, 博士生导师

    通讯作者:

    王秋红, wangqiuhong1025@126.com

  • 中图分类号: O381;X932

Explosion characteristics of micro-sized aluminum dust in 20 L spherical vessel

  • 摘要: 采用20 L近球形粉尘爆炸实验系统,探究微米级铝粉在不同点火延迟时间、粉尘粒径及粉尘浓度下的爆炸特性规律。结果表明:当点火延迟时间在20~120 ms范围内,铝粉最大爆炸压力和最大爆炸压力上升速率先增大后减小,随铝粉粒径增大,最佳点火延迟时间增大;在任一点火延迟时间下,粒径大于8.12 μm的铝粉最大爆炸压力随粉尘粒径的减小呈增大的变化趋势;粒径大于8.12 μm的铝粉,在80~440 g/m3粉尘浓度范围内,铝粉最大爆炸压力和最大爆炸压力上升速率先增大后减小,且铝粉粒径越小,对应的最猛烈爆炸粉尘浓度越低。
  • 图  1  铝粉粒度微分分布

    Figure  1.  Particle size differential volume of aluminum dust

    图  2  20 L近球形粉尘爆炸实验系统

    Figure  2.  20 L nearly spherical dust explosion experimental system

    图  3  不同粒径条件下点火延迟时间对铝粉爆炸特性的影响

    Figure  3.  Effect of ignition delay time on explosion characteristics of aluminum dust under different particle sizes

    图  4  粉尘粒径对铝粉爆炸特性的影响

    Figure  4.  Effect of dust particle size onexplosion characteristics of aluminum dust

    图  5  粉尘浓度对铝粉爆炸特性的影响

    Figure  5.  Effect of dust concentration on explosion characteristics of aluminum dust

    表  1  不同粒径和不同点火延迟时间下铝粉爆炸特性参数

    Table  1.   Explosion characteristic parameters of aluminum dustunder different particle sizes and different ignition delay times

    d/μm τ/ms pmax/MPa (dp/dt)max/(MPa·s-1)
    8.12 20 0.272 41.505
    8.12 30 0.292 221.599
    8.12 40 0.271 173.190
    8.12 60 0.263 65.909
    8.12 80 0.259 62.776
    8.12 100 0.243 34.348
    8.63 20 0.258 40.513
    8.63 40 0.313 48.676
    8.63 60 0.311 78.554
    8.63 80 0.252 69.444
    8.63 100 0.247 38.574
    10.98 20 0.228 23.622
    10.98 40 0.252 36.393
    10.98 60 0.288 48.402
    10.98 80 0.237 37.568
    10.98 100 0.236 35.568
    17.98 20 0.092 7.656
    17.98 40 0.116 12.894
    17.98 60 0.186 20.412
    17.98 80 0.228 27.482
    17.98 100 0.316 50.340
    17.98 120 0.168 22.660
    下载: 导出CSV

    表  2  不同粉尘浓度下铝粉爆炸特性参数

    Table  2.   Explosion characteristic parameters of aluminum dust under different dust concentrations

    d/μm τ/ms ρ/(g·m-3) pmax/MPa (dp/dt)max/(MPa·s-1)
    8.12 30 60 0.181 53.529
    8.12 30 80 0.292 221.599
    8.12 30 120 0.346 120.130
    8.12 30 160 0.358 110.658
    8.12 30 220 0.343 85.847
    8.12 30 280 0.300 71.626
    8.12 30 360 0.298 62.837
    8.63 40 80 0.313 48.676
    8.63 40 120 0.390 50.904
    8.63 40 160 0.377 104.524
    8.63 40 220 0.375 75.044
    8.63 40 280 0.357 48.920
    8.63 40 360 0.329 44.923
    8.63 40 440 0.298 40.472
    10.98 60 80 0.288 48.402
    10.98 60 120 0.290 74.342
    10.98 60 160 0.355 104.891
    10.98 60 220 0.354 88.289
    10.98 60 280 0.290 33.147
    10.98 60 360 0.219 34.150
    10.98 60 440 0.207 22.583
    17.98 100 80 0.316 50.340
    17.98 100 120 0.334 70.238
    17.98 100 160 0.338 60.415
    17.98 100 220 0.404 60.243
    17.98 100 280 0.350 54.210
    17.98 100 360 0.327 38.616
    17.98 100 440 0.271 26.856
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-03-30
  • 修回日期:  2017-07-21
  • 刊出日期:  2018-09-25

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