摘要
为研究自制细水雾添加剂中主要成分对灭火性能的影响,在开放空间,进行了不同工作压力、不同浓度、不同燃料条件下含添加剂细水雾的灭火研究,实验获取了灭火时间、火焰形态、火焰温度等灭火参数。通过对柴油和汽油两种不同燃料的灭火实验发现,使用含添加剂的细水雾对低沸点、高蒸发速率的汽油灭火效果同样较好。根据加入不同浓度的氟表面活性剂的实验结果比照发现,氟表面活性剂是自制添加剂中起到主要提升灭火性能作用的物质,它通过改变细水雾物理性质使加入自制添加剂的细水雾的灭火性能显著提高。对比调整自制添加剂各物质含量的实验数据,进一步确定添加剂各成分最佳灭火性能浓度。
Water mist technology provides efficient firefighting performance while there is still room for improvement,so varieties of additives have been studied recent years both abroad and domestic.The self-made additives are used to compare the firefighting performance of diesel and heptane fire in open space.By adjusting the concentration of substance in the additives and conducting the experiment under the pressure of 0.3 MPa,0.5 MPa and 0.7 MPa,extinguishing time,flame shape and temperature are measured in the experiment.Through the experiments using different fuels,it can be found when the fuel is heptane who has a lower ignition point and a higher evaporation,the water mist additives can still significantly improve the firefighting performance.According to the data based on different concentrations of fluorinated surfactants,we can see fluorinated surfactants are the main substance to prove the performances by changing physical property of water mist.Maximize fire performance proportion of the additives are find by experiments results.
出处
《中国工程科学》
北大核心
2012年第11期82-87,共6页
Strategic Study of CAE
基金
中国科学技术大学火灾科学国家重点实验室开放课题资助项目(HZ2011-KF04)
关键词
细水雾添加剂
灭火性能
添加剂成分
灭火机理
water mist additive
fire fighting performance
additive proportion
fire extinguishing mechanism
