泡沫喷射器结构对泡沫射流影响的研究  

Study on the Influence of Foam Ejector Structure on Foam Jet

作　　者：尚祖政 张广文 陈硕 郎需庆 牟小冬 崔芃雨 Shang Zuzheng;Zhang Guangwen;Chen Shuo;Lang Xuqing;Mu Xiaodong;Cui Pengyu(SINOPEC Research Institute of Safety Engineering Co.,Ltd.,Shandong,Qingdao 266104;Qingdao Nuocheng Chemical Safety Technology Co.,Ltd.,Shandong,Qingdao 266071;SINOPEC Safety Supervision Department,Beijing 100728)

机构地区：[1]中石化安全工程研究院有限公司,山东青岛266104 [2]青岛诺诚化学品安全科技有限公司,山东青岛266071 [3]中国石油化工集团有限公司安全监管部,北京100728

出　　处：《安全、健康和环境》2022年第12期13-17,共5页Safety Health & Environment

基　　金：应急管理部消防救援局科技项目(2021XFCX17),低沸点易燃液体储罐火灾高效处置技术及装备;应急管理部“科技助力经济2020”项目(SQ2020YFF0426576-2020-07-07),易燃易挥发有毒液体长效覆盖与高效灭火移动式应急装备的开发与应用项目。

摘　　要：为了进一步提高泡沫炮的灭火效率,对泡沫喷射器的整流管长度和泡沫喷嘴直径采用Fluent软件进行计算模拟,利用欧拉模型观察压缩空气泡沫在泡沫喷射器内泡沫两相流的压力分布、流速等参数。基于模拟结果,制作8根不同尺寸的泡沫喷射器进行泡沫流量、发泡倍数、射程的实体测试,再与模拟结果对比综合分析。分析结果表明:当整流管长度超过直径的4倍、泡沫喷嘴直径不大于整流管直径的0.5倍时,泡沫喷射效果较好,但在应用中要根据保护对象、应用场所考虑是否增大或减小流量、提高或降低流速的需求,从而确定整流管长度和泡沫喷嘴的尺寸。In order to further improve the extinguishing efficiency of fire-fighting foam, the length of the rectifier tube and the diameter of the foam nozzle of the foam ejector were simulated by Fluent software. The Euler model was used to observe the pressure distribution and flow velocity of the compressed air foam in the foam ejector. Based on the simulation results, 8 foam ejectors with different sizes were made to test the foam flow rate, foam expansion ratio and range, and then analyzed comprehensively with the simulation results. The analysis results showed that when the length of the rectifier tube was more than 4 times the diameter and the diameter of the foam nozzle was not more than 0.5 times the diameter of the rectifier tube, the foam injection effect was better, but in the application, the length of the rectifier tube and the size of the foam nozzle should be determined according to the protection object and the application site to consider whether to increase or decrease the flow rate and increase or decrease the flow rate.

关 键 词：泡沫喷射器 整流管 喷嘴直径 欧拉模型 泡沫灭火 

分 类 号：TU998[建筑科学—市政工程]