细水雾抑制受限空间汽油与酒精火的研究

发布时间：2018-09-16 19:17

【摘要】：设计试验系统,以酒精火和汽油火为研究对象,分析预燃时间、喷雾压力以及火源功率对细水雾灭火效果的影响。预燃时间设定为:30、60、90s,喷雾压力设置为0.50、1.25、2.00MPa,火源设定为:50、100、150g。设计2组正交实验,分析不同工况下烟气浓度、火源热成像以及空间温度的变化过程。正交分析结果表明,三因素三水平对应的最优工况为2.00 MPa、30s、100g,而且在此条件下酒精和汽油火的灭火时间分别为63s和36s。根据灭火时间极差分析结果,影响酒精火实验因素的主次顺序为喷雾压力、火源功率、预燃时间,而影响汽油火实验因素的主次顺序为预燃时间、喷雾压力、火源功率。
[Abstract]:An experimental system was designed to analyze the effects of preignition time, spray pressure and fire source power on the fire extinguishing effect of water mist. The preignition time was set to: 30: 30 / 60 / 90 / s, the spray pressure was set to 0.50 / 1. 25 / 2.00 MPa, and the source of fire was set to be: 1 / 50 / 100 / 150 / g, respectively. Two groups of orthogonal experiments were designed to analyze the variation process of smoke concentration, thermal imaging of fire source and space temperature under different working conditions. The results of orthogonal analysis show that the optimal condition of three factors and three levels is 2. 00 MPa,30s,100g, and the fire extinguishing time of alcohol and gasoline is 63 s and 36 s, respectively. According to the results of fire extinguishing time range analysis, the primary and secondary order of influencing factors of alcohol fire experiment is spray pressure, fire source power, preburning time, and the primary and secondary order of influencing factors of gasoline fire experiment is preburning time, spray pressure and fire source power.
【作者单位】：常州大学环境与安全工程学院;常州大学石油工程学院;江苏省油气储运重点实验室;
【基金】：江苏省自然科学基金项目(BK20140264,BK20150269) 江苏省油气储运重点实验室项目(SCZ1211200004/004) 常州大学校基金项目(ZMF14020052,14020055) 江苏省2014年度高校研究生科研创新计划项目(1112)
【分类号】：TU998.1

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