摘要
压缩空气泡沫系统与传统泡沫系统在应用方式和性能方面存在重要区别,在油罐火灾防护中使用压缩空气泡沫灭火技术具备诸多益处,因此本文通过模拟油罐灭火试验,采用90%控火时间和灭火时间作为评价指标,评估分析压缩空气泡沫系统用于油罐液上喷射的可行性以及泡沫溶液供给强度、泡沫液类型等影响因素对灭火效果的影响。试验结果表明,固定式压缩空气泡沫系统采用液上喷射方式具有技术可行性,特别是在泡沫灭火剂储备量方面可低于现有吸气式泡沫系统。较高的泡沫供给强度可以获得更好的灭火效果,5 L/(min.m2)已接近液上喷射压缩空气泡沫的临界供给强度。对于控、灭火时间,均遵从"成膜型"泡沫灭火剂优于"非成膜型"泡沫灭火剂这一规律。
There are obvious differences between compressed air foam system and traditional foam generation system on application mode and performance.It is beneficial to apply compressed air foam extinguishing technology in tank fire protection.In this paper,simulated tank fire experiment is conducted to evaluate the feasibility of applying compressed air foam in tank liquid up jet,also the influencing factors such as foam solution supply intensity and the type of foam are studied.The results show that it is technically feasible to apply fixed compressed air foam system in tank fire by liquid up jet.The storage quantity of foam extinguishing agent is quite less than that of aspirated foam system.Higher foam supply intensity can get a better extinguishing effect.The intensity of 5 L/(min·m2) is close to the critical supply intensity of compressed air foam by liquid up jet.The 'film forming' foam is better than 'non-film forming' foam on fire control time and extinguishing time.
出处
《工业安全与环保》
北大核心
2013年第4期25-28,共4页
Industrial Safety and Environmental Protection
基金
国家科技支撑计划课题(2011BAK03B04)
关键词
油罐
压缩空气泡沫系统
液上喷射
供给强度
混合比
tank compressed air foam system liquid up jet supply intensity mixing ratio
