不同通风条件下柴油池火的实验研究

发布时间：2018-03-25 02:16

本文选题：池火　切入点：通风　出处：《中国安全生产科学技术》2017年06期

【摘要】：为了分析不同通风条件对柴油池火燃烧特性及引燃特性的影响,进行ф205 mm带水垫层柴油池火的引燃实验,通过对池火燃料的质量损失速率、火焰高度、温度及热辐射等的监测,分析通风环境中柴油池火的热传递规律。结果表明:当风速为0.5 m/s时,火灾进入旺盛阶段的时间提前,火焰平均温度最高;当风速为1 m/s时,风速的增加导致油池火的质量损失速率增加,位于主火源下风向的待引燃火源获得的热辐射通量增大,火灾旺盛阶段火焰的平均温度降低,火焰高度降低,下风向相邻油盘引燃的时间提前;1 m/s情况下,ф205 mm带水垫层柴油池火的安全间距需增加到1D以上;通风环境对池火发展及蔓延的影响是显著的,应适当加大下风向可燃物的安全间距,合理选择通风排烟风速,优化火灾应急救援策略。
[Abstract]:In order to analyze the influence of different ventilation conditions on the combustion and ignition characteristics of diesel fuel pool fire, the ignition experiments of diesel oil pool fire with 205mm water cushion layer were carried out. The mass loss rate, flame height, temperature and thermal radiation of the fuel were monitored. The heat transfer law of diesel pool fire in ventilated environment is analyzed. The results show that when the wind speed is 0.5 m / s, the time of the fire entering the exuberant stage is earlier, and the average flame temperature is the highest, and when the wind speed is 1 m / s, The increase of wind speed increases the mass loss rate of the oil pool fire, the heat radiation flux of the ignition fire source under the main fire source increases, the average temperature of the flame decreases and the flame height decreases during the period of exuberant fire. Under the condition that the downwind ignition time of adjacent oil pan is 1 m / s ahead of time, the safe distance of 205mm water cushion diesel pool fire should be increased to more than 1D, and the influence of ventilation environment on the development and spread of pool fire is obvious. It is necessary to increase the safe distance of combustible in the downwind direction, select the ventilation and smoke exhaust speed reasonably, and optimize the fire emergency rescue strategy.
【作者单位】：东北大学资源与土木工程学院;成都理工大学工程技术学院;沈阳城市建设学院市政与环境工程系;
【基金】：国家十二五科技支撑计划项目(2015BAK16B01) 国家自然科学基金项目(51374050)
【分类号】：X932

【相似文献】