细水雾灭火系统在小型汽车库火灾中的灭火效能试验研究  

Experimental study on fire-extinguishing efficiency of water mist fire-extinguishing system in small car garage fire

作　　者：彭锦志 PENG Jin-zhi(China-Union Kerich Fire Science and Technology Co.,Ltd.,Hunan Changsha 410007,China)

机构地区：[1]中联科锐消防科技有限公司,湖南长沙410007

出　　处：《消防科学与技术》2022年第6期802-806,817,共6页Fire Science and Technology

摘　　要：针对小型汽车库的火灾防控,建立了5.95 m×7.6 m×3.6 m全尺寸汽车库火灾试验平台,研究了高压细水雾灭火系统单个喷头在不同系统工作压力(6,8,10 MPa)下的洒水分布性能,分析确定了小型汽车库细水雾灭火系统设计参数及喷头布置位置;并采用细水雾灭火系统对汽车库内汽车后座火灾开展了灭火试验研究。结果表明:采用高压细水雾灭火系统能有效抑制小型汽车库内汽车火灾发展,并可很好地保护汽车库的围护结构及相邻汽车。本文研究确定小型汽车库的高压细水雾灭火系统采用闭式系统,系统工作压力为10 MPa,设计喷雾强度不小于2.0 L/(min·m^(2)),流量系数取K=3.0等设计参数以及喷头的布置位置,可使灭火系统达到较好的灭火、控火效果。Aiming at the fire protection of small car garages, a full-scale car garage fire experiment platform of 5.95 m×7.6 m×3.6 m was established. The water distribution performance of a single nozzle of high-pressure water mist fire-extinguishing system under different system working pressures(6, 8,10 MPa)was studied experimentally. Therefore, the design parameters and the arrangement position of the nozzles of the water mist fire-extinguishing system in the small car garage were analyzed and determined. Besides that,the determined water mist fire extinguishing system was used to carry out the fire-extinguishing test of the fire in the back seat of the car in the garage. The results showed that the high-pressure water mist fire-extinguishing system can suppress the development of the car fire in the small garage effectively, and can protect the enclosure structure of the garage and the adjacent car well. In this paper, it is determined that the high-pressure water mist fire-extinguishing system of the small car garage adopts a closed system, the working pressure of the system is 10 MPa, the design spray intensity is not less than 2.0 L/(min · m^(2)), the flow coefficient is K=3.0 and other design parameters as well as the arrangement position of the nozzle, which can make the fire extinguishing system achieve better fire extinguishing and fire control effect.

关 键 词：细水雾灭火系统 洒水分布性能 全尺寸汽车库火灾试验 灭火有效性 

分 类 号：X924.4[环境科学与工程—安全科学] TU892[建筑科学]