新型微乳化柴油抛撒和云雾爆炸实验及其抑爆性能评估

黄勇 解立峰 张红伟 鲁长波 安高军 熊春华 陈群

黄勇, 解立峰, 张红伟, 鲁长波, 安高军, 熊春华, 陈群. 新型微乳化柴油抛撒和云雾爆炸实验及其抑爆性能评估[J]. 爆炸与冲击, 2019, 39(3): 035401. doi: 10.11883/bzycj-2017-0457
引用本文: 黄勇, 解立峰, 张红伟, 鲁长波, 安高军, 熊春华, 陈群. 新型微乳化柴油抛撒和云雾爆炸实验及其抑爆性能评估[J]. 爆炸与冲击, 2019, 39(3): 035401. doi: 10.11883/bzycj-2017-0457
HUANG Yong, XIE Lifeng, ZHANG Hongwei, LU Changbo, AN Gaojun, XIONG Chunhua, CHEN Qun. Experimental study of dispersal and cloud explosion of a new micro-emulsified diesel fuel and its explosion suppression performance assessment[J]. Explosion And Shock Waves, 2019, 39(3): 035401. doi: 10.11883/bzycj-2017-0457
Citation: HUANG Yong, XIE Lifeng, ZHANG Hongwei, LU Changbo, AN Gaojun, XIONG Chunhua, CHEN Qun. Experimental study of dispersal and cloud explosion of a new micro-emulsified diesel fuel and its explosion suppression performance assessment[J]. Explosion And Shock Waves, 2019, 39(3): 035401. doi: 10.11883/bzycj-2017-0457

新型微乳化柴油抛撒和云雾爆炸实验及其抑爆性能评估

doi: 10.11883/bzycj-2017-0457
基金项目: 安全生产重特大事故防治关键技术科技项目(jiangsu-0014-2017AQ);“江苏省博士后科研资助计划”资助项目(1701150B);江苏省高等学校大学生创新创业训练计划项目(201710292011Z)
详细信息
    作者简介:

    黄 勇(1978- ),男,博士,高级工程师,硕士生导师,huangyong001@cczu.edu.cn

    通讯作者:

    解立峰(1965- ),男,博士,教授,博士生导师,xielifeng319@sina.com

  • 中图分类号: O383

Experimental study of dispersal and cloud explosion of a new micro-emulsified diesel fuel and its explosion suppression performance assessment

  • 摘要: 为掌握新型微乳化柴油的抑爆性能和机理,开展了−10#柴油、普通微乳化柴油和新型微乳化柴油抛撒和云雾爆炸实验。采用灰色关联分析法,对柴油样品云雾爆炸火球的表面最高温度时的平均温度、高温(高于1 273.15 K)持续时间、火球最大截面积、火球辐射度等特征参数进行定量计算并评估其爆炸威力,又运用液体燃料抛撒和成像系统,研究柴油样品在激波及其高速气流作用下的抛撒雾化现象及其抑爆机理。结果表明:新型微乳化柴油的抛撒云雾径向扩展半径和云雾爆炸火球特征参数均明显小于−10#柴油、普通微乳化柴油,如在含水质量分数为5%的乳化柴油中分别添加质量分数为0.2%和0.4%的高分子聚合物防雾剂,形成的新型微乳化柴油的火球表面最高平均温度比−10#柴油分别低 296.90 和 336.90 K,高温持续时间比−10#柴油分别少 94 和 234 ms;火球最大截面积也分别只有−10#柴油的60.10%、53.53%;新型微乳化柴油的爆炸威力最小,抑爆性能最好,其次是普通微乳化柴油和−10#柴油;微乳化柴油的水分质量分数在15%以下时,多增加10%的水与添加0.2%防雾剂的抑爆效果相当;新型微乳化柴油抑爆性能较好的主要原因是柴油中添加防雾剂使其液滴黏弹性增大,在高速气流剪切作用不易破碎、雾化,液滴分散效果差。
  • 图  1  液体燃料抛撒装置示意图

    Figure  1.  Schematic of liquid fuel dispersal device

    图  2  实验场布置示意图

    Figure  2.  Schematic of the layout of experimental field

    图  3  柴油云雾径向扩展半径随时间的变化

    Figure  3.  Variation of radial extension radius of diesel fuel cloud with time

    图  4  柴油云雾爆炸过程

    Figure  4.  Diesel fuel cloud explosion process

    图  5  柴油云雾火球表面平均温度随时间的变化

    Figure  5.  Variation of the surface average temperature of diesel fuel cloud fireball with time

    图  6  液体燃料抛撒和成像系统俯视示意图

    Figure  6.  Vertical schematic of liquid fuel dispersal and imaging system

    图  7  水平激波管示意图

    Figure  7.  Schematic of a horizontal shock tube

    图  8  激波及高速气流作用下柴油柱的雾化过程

    Figure  8.  Atomization process of diesel fuel column by shock wave and high speed airflow

    图  9  雾滴特征平均粒径

    Figure  9.  Characteristic mean particle size of droplet

    图  10  柴油样品的小振幅振荡流变曲线

    Figure  10.  Small amplitude oscillatory rheological curves of diesel fuel samples

    表  1  柴油样品的组成和理化性能

    Table  1.   Component and physical & chemical properties of diesel fuel samples

    柴油φ/%φhmp/10−3密度/
    (kg·m−3)
    运动黏度/
    (10−6 m−2·s−1)
    黏度系数/
    (10−3 kg·m−1·s−1)
    表面张力/
    (10−3 N·m−1)
    −10#微乳化剂
    1100000794.1 3.934 3.12431.64
    284.2710.7350803.8 6.477 5.20632.53
    373.0012.00150849.810.208 8.67531.44
    484.2710.7352843.512.01110.13132.11
    584.2710.7354832.422.24018.51333.48
     注:φ为未加入聚合物时各组分的质量分数,φhmp为所加入高分子聚合物的质量分数。
    下载: 导出CSV

    表  2  柴油云雾爆炸火球特征参数

    Table  2.   Characteristic parameters of diesel fuel cloud explosion fireball

    柴油Tm/KT0/KΔt/msS/m2T1/KJ*/(104 W·m−2)
    873.15~1 073.15 K1 073.15~1 273.15 K1 273.15 K以上
    11 692.451 103.8520310923414.461 103.858.42
    21 317.75 876.551251409412.27883.653.46
    31 728.65 811.5562125203 8.17 814.952.50
    41 605.95 806.9512533140 8.69 806.952.41
    5 985.75 766.9520300 7.74 766.951.96
    下载: 导出CSV

    表  3  规范化后的指标值

    Table  3.   Normalized index values

    柴油T0ΔtSJ*
    10.694 800.535 30.232 8
    20.900 70.598 30.686 80.821 9
    30.959 60.132 50.970 30.935 9
    40.963 80.401 70.934 30.946 6
    51111
     注:上方横线表示为规范化后的物理量。
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-12-29
  • 修回日期:  2018-05-20
  • 网络出版日期:  2019-03-25
  • 刊出日期:  2019-03-01

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