爆炸水雾扑灭油火过程的实验研究

汪泉; 李志敏; 郭子如; 李政

doi:10.11858/gywlxb.2014.04.010

爆炸水雾扑灭油火过程的实验研究

doi: 10.11858/gywlxb.2014.04.010

汪泉^{1, 2,},
李志敏³,
郭子如¹,
李政¹

1.
安徽理工大学化学工程学院，安徽淮南 232001
2.
中国科学技术大学工程科学学院，安徽合肥 230027
3.
安徽理工大学理学院，安徽淮南 232001

基金项目: 安徽省高校自然科学研究重点项目(KJ2013A100);安徽省优秀青年人才基金重点项目(2010SQRL057ZD); 国家自然科学基金(51134012)

详细信息

作者简介:
汪泉(1980-), 男, 博士, 副教授, 主要从事可燃物燃烧与爆炸安全研究.E-mail:quanwang@mail.ustc.edu.cn

中图分类号: O389;TD753
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出版历程
- 收稿日期: 2012-04-16
- 修回日期: 2012-07-25

Experimental Study on the Process of Oil Fire Extinguishing by Explosive Water Mist

WANG Quan^{1, 2
,},
LI Zhi-Min³,
GUO Zi-Ru¹,
LI Zheng¹

1.
School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, China
2.
School of Engineering Science, University of Science and Technology of China, Hefei 230027, China
3.
School of Science, Anhui University of Science and Technology, Huainan 232001, China

摘要

摘要: 爆炸水雾灭火是一种高效、快捷的新型灭火方式。为了研究爆炸水雾与油火的作用过程，采用CCD摄像机、微细热电偶、红外测温仪3种测试手段，获得了爆炸水雾与油火作用的图像以及灭火过程中温度的变化情况。实验结果表明：爆炸水雾在冲击油面后温度发生了突降，温度突降时间与CCD记录的水雾扑灭明火的时间一致；当水袋位于油盘正上方1.0 m、炸药量为2.02 g、水量为3 kg时，灭火持续时间约为200 ms；微细热电偶能够较准确地反映爆炸水雾灭火过程的温度变化，而红外测温仪可作为辅助测温手段定性分析灭火过程中的温度变化。
- 爆炸水雾 /
- 油火 /
- CCD摄像 /
- 微细热电偶 /
- 红外测温仪
Abstract: Fire extinguishing by explosive water mists is a new method with high efficiency and rapid fire-extinguishing performance.In order to study the process of explosive water mists acting on oil fire, a CCD camera, a fine thermocouple and an infrared thermometer were used to capture the images of fire extinguishing by explosive water mists and the temperature variation during extinguishing process.The experimental results show that the temperature drops sharply while the explosive water mists impact on the oil-fire surface, and the fall time is in accord with the fire extinguishing duration from CCD images.Also, when the water bag is placed 1.0 m above the oil pan with 3 kg water and 2.02 g explosive, the extinguishing duration time is about 200 ms.A fine thermocouple can be used as an accurate measuring device to represent the temperature variation of the extinguishing process, while an infrared thermometer is a good auxiliary means to qualitatively investigate the temperature change of extinguishing process.
- explosive water mists /
- oil fire /
- CCD camera /
- fine thermocouple /
- infrared thermometer

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图 1 实验测试系统

Figure 1. Experimental system

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图 2 CCD摄像机拍摄的爆炸水雾灭火过程图像

Figure 2. CCD images of fire extinguishing by explosive water mists

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图 3 微细热电偶测得的水雾灭火过程的温度变化

Figure 3. Temperature variation of the fire extinguishing process by a fine thermocouple

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图 4 红外测温仪测得的水雾灭火前、后的温度变化

Figure 4. Temperature variation before and after fire extinguishing by an infrared thermometer

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表 1 不同方法获得的爆炸水雾灭火测试结果的比较

Table 1. Testing results comparison of explosive water mists fire-extinguishing with different methods

Testing method	t_s/(s)	t_e/(s)	Δt/(s)	T_s/(℃)	T_b/(℃)	T_a/(℃)
CCD camera	25.80	26.00	0.20
Fine thermocouple	25.80	26.00	0.20	934	835.8	75.5
Infrared thermometer	25.76	26.02	0.26	1 056	857.9	361.3

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