高大空间建筑自动喷水灭火技术试验研究  

Experimental study on automatic sprinkler system at high-clearance buildings

作　　者：杨丙杰[1] 刘欣 李毅 田立伟 

机构地区：[1]公安部天津消防研究所消防规范研究室 [2]国家固定灭火系统和耐火构件质量监督检验中心综合部,天津300382

出　　处：《中国安全科学学报》2015年第4期42-46,共5页China Safety Science Journal

基　　金：国家"十二五"科技支撑计划项目(2011BAK03B04)

摘　　要：为研究自动喷水灭火技术对高大空间建筑火灾控火性能的影响,按照高大空间公共建筑和厂房的实际火灾场景,开展自动喷水灭火技术全尺寸火灾试验和数值模拟计算。选定的喷头流量系数为K-161,安装高度为18 m,喷水强度分别为20和25 L/（min·m2）。试验结果显示,在该火灾场景中,第1只喷头在点火后3~4 min动作,喷头开放数为3~4只即能成功控制火势的增长和蔓延,顶板下的最高温度为120℃,距火灾试验模型2.4 m处的最高温度为20℃。数值模拟计算与实体火试验结论基本一致,说明高大空间建筑采用自动喷水灭火系统,能达到很好的控火甚至是灭火效果。To research the impact of automatic sprinklers system on fire control performance at highclearance buildings, based upon factual fire scenario in high-clearance public buildings and workshops, full-scale fire experiments and numerical modeling were carried out. The selected sprinkler was K-161. The installed height was 18 meters. The spray density was 20 and 25L/（ min·m2）. The experiment results indicate that the first sprinkler would be activated about 3 -4 mins after the ignition, only 3 to 4 activated sprinklers would control the growth and spread of fire successfully at this fire scenario, that the highest temperature under the ceiling would be no more than 120 ℃, and that the highest temperature at 2.4 meters away from fire test model would be no more than 20 ℃. The result of numerical modeling is basically the same with the fire experiments, which means sprinkler systems are effective in fire control and fire suppression at high-clearance buildings.

关 键 词：高大空间建筑 自动喷水灭火系统 全尺寸火灾试验 数值模拟 控火性能 

分 类 号：X932[环境科学与工程—安全科学]