阻燃介质在炸药驱动燃料分散中的应用

王永旭; 解立峰; 贾晓亮; 张莹; 李斌

doi:10.11883/bzycj-2019-0260

阻燃介质在炸药驱动燃料分散中的应用

doi: 10.11883/bzycj-2019-0260

王永旭^1,,
解立峰^1, ,,
贾晓亮²,
张莹²,
李斌¹

1.
南京理工大学化工学院，江苏南京 210094
2.
辽宁锦华机电有限公司，辽宁葫芦岛 125000

详细信息

作者简介:
王永旭（1992－　），男，博士研究生，wangyongxu216@163.com

通讯作者:
解立峰（1962－　），男，博士，教授，xielifeng319@sina.com

中图分类号: O383; TJ55
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- 被引次数: 0
出版历程
- 收稿日期: 2019-07-01
- 修回日期: 2019-11-04
- 网络出版日期: 2020-03-25
- 刊出日期: 2020-04-01

Application of flame retardant medium in fuel dispersion driven by explosive

1.
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
Liaoning Jinhua Electromechanical Company Limited, Huludao 125000, Liaoning, China

摘要

摘要: 为解决燃料空气炸药中的燃料在中心分散装药爆炸驱动抛撒过程中易发生的窜火问题，结合中心分散装药结构设计，引入以超细干粉灭火剂为主体的阻燃介质，采用高速录像和红外热成像仪研究了中心分散药外部填充阻燃介质的情况下，对中心分散药爆炸火球产生的高温及火焰的抑制情况。试验结果表明，中心分散药爆炸火球的最高温度为1 355.4 ℃，温度超过150 ℃的持续时间为264.8 ms。外部填充阻燃介质后，中心分散药爆炸产生的火焰基本消失，火球最高温度下降90%以上，火球表面温度分布不超过100 ℃。同时进行了验证试验，采用填充阻燃介质的中心分散药抛撒1 kg的乙醚和铝粉的混合燃料，分散药与燃料的质量比超过4%时，云雾仍未发生窜火。表明填充阻燃介质可以有效防止燃料在爆炸抛撒过程中发生窜火的问题。
- 燃料空气炸药 /
- 分散药 /
- 窜火 /
- 阻燃介质
Abstract: To solve the premature-combustion problem of FAE fuel during the dispersal process by explosive, fire retardant medium with superfine ABC powder as the main component was introduced along with the structural design of central dispersed explosive. High-speed camera and infrared thermal imager were used to study the temperature and flame generated by the dispersed explosive. The experimental results show that the maximum temperature of the dispersed explosive fireball was 1355.4 °C, and the duration of the temperature exceeding 150 °C was 264.8 ms. The flame generated by the dispersed explosive almost completely disappears after the introduction of the flame retardant medium. The maximum temperature of the fireball decreases by more than 90%, and the surface temperature of the fireball does not exceed 100 °C. At the same time, the verification experiment was carried out. The mixture fuel of 1 kg ether and aluminum powder was dispersed by the dispersed explosive filled with flame retardant medium. When the mass ratio of dispersed explosive to fuel was more than 4%, the premature-combustion was restrained successfully. It shows that filling the flame retardant medium can effectively prevent the premature-combustion in the fuel dispersion process.
- fuel air explosive /
- dispersed explosive /
- premature-combustion /
- flame retardant medium

HTML全文

图 1 中心管结构示意图

Figure 1. Central tube structure diagram

下载: 全尺寸图片幻灯片

图 2 试验示意图

Figure 2. Experimental diagram

下载: 全尺寸图片幻灯片

图 3 不同填充条件下的高速图像对比

Figure 3. High-speed video pictures under different filling conditions

下载: 全尺寸图片幻灯片

图 4 不同侧面阻燃介质厚度下的高速图片

Figure 4. High-speed pictures for different side flame retardant medium thicknesses

下载: 全尺寸图片幻灯片

图 5 不同时刻的红外图片

Figure 5. Infrared pictures at different moments

下载: 全尺寸图片幻灯片

图 6 火球表面最高温度随时间的变化曲线

Figure 6. The highest surface temperature of the fireball vs. time

下载: 全尺寸图片幻灯片

图 7 火球表面温度及其对应直线温度变化曲线

Figure 7. Surface temperature distribution and temperature change with the corresponding plot lines

下载: 全尺寸图片幻灯片

图 8 不同顶部阻燃介质厚度的高速图片

Figure 8. High-speed pictures for different top flame retardant medium thicknesses

下载: 全尺寸图片幻灯片

图 9 火球最高温度随时间的变化曲线及对应的最高温度

Figure 9. The highest temperature of the fireball vs. time and the corresponding maximum temperature

下载: 全尺寸图片幻灯片

图 10 燃料抛撒结构示意图

Figure 10. Schematic diagram of fuel dispersal structure

下载: 全尺寸图片幻灯片

图 11 验证试验高速图片

Figure 11. High-speed pictures in verification experiment

下载: 全尺寸图片幻灯片

图 12 云雾窜火模型^[1]

Figure 12. Cloud premature-combustion model^[1]

下载: 全尺寸图片幻灯片

表 1 内管直径和侧面阻燃介质厚度

Table 1. Inner tube diameter and side flame retardant medium thickness

内管直径/mm 20 23 26 30 38

阻燃介质厚度/mm 0 1.5 3.0 5.0 9.0

下载: 导出CSV

表 2 火球表面温度测试结果

Table 2. Fireball surface temperature test results

序号阻燃介质厚度/
mm 最高温度/
℃ 高温持续时间/ms
(大于150 ℃)

1 0 1 355.4 264.8
2 1.5 124.1 0
3 3.0 91.1 0
4 5.0 77.2 0
5 9.0 59.9 0

下载: 导出CSV

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