文物建筑内移动式高压细水雾灭火装置设计参数研究
Research on the design parameters of mobile high-pressure water mist fire extinguishing device in cultural relic buildings
张子龙 1刘芳 1李宏文 2钱禹丰2
作者信息
- 1. 北京建筑大学 环境与能源工程学院,北京 100044
- 2. 中国建筑科学研究院建筑防火研究所,北京 100013
- 折叠
摘要
为了研究移动式高压细水雾灭火装置在文物建筑内的设计参数,搭建了6A木垛火试验台,研究在不同喷射距离和模式下,该装置应对大规模火灾时适合的喷射流量与距离,并采用FDS,以北京某古建筑为模型进行模拟,从喷射强度、喷射距离、喷射时机、雾化粒径等方面验证并补充移动式高压细水雾灭火装置的设计参数.结果显示,喷射强度可设定为 4.4～6.6 L/(min.m2);喷射距离可设定为5 m,尽可能采用近距离喷射策略;灭火时机应尽早,至少在起火后300 s内;雾化粒径的选择需根据具体情况权衡考虑.
Abstract
In order to investigate the design parameters of a mo-bile high-pressure water mist fire extinguishing device in cultural heritage buildings,a 6A wood pile fire test platform was set up to study the suitable jet flow rate and distance for this device to handle large-scale fires under different jet distances and modes.The Fire Dynamics Simulator(FDS)was used to simulate a his-torical building in Beijing as a model,validating and supplement-ing the design parameters of the mobile high-pressure water mist fire extinguishing device from aspects such as jet intensity,jet dis-tance,jet timing,and atomization particle size.The results show that the jet intensity can be set at 4.4～6.6 L/(min.m2);the jet distance can be set to 5 m.A close jet strategy is used whenever possible;the fire extinguishing timing should be as early as pos-sible,at least within 300 s after the fire starts;the choice of atom-ized particle size needs to be weighed on a case-by-case basis.
关键词
移动式高压细水雾灭火装置/文物建筑/设计参数/火灾试验/FDSKey words
mobile high-pressure water mist fire extinguishing de-vice/cultural heritage buildings/design parameters/fire test/FDS引用本文复制引用
基金项目
北京市科委绿通项目(Z171100004417031)
出版年
2024
NETL
NSTL
万方数据