液氮直注式灭火技术在冷库火灾扑救实战中的应用  

Application of Liquid Nitrogen Direct Injection Fire Extinguishing Technology in Practical Firefighting of Cold Storage Fires

作　　者：李金珀 温国祥 史波波 沈王赵男 LI Jinpo;WEN Guoxiang;SHI Bobo;SHEN Wangzhaonan

机构地区：[1]苏州市消防救援支队 [2]中国矿业大学安全工程学院

出　　处：《中国应急救援》2025年第1期55-59,共5页China Emergency Rescue

基　　金：国家自然科学基金“直注液氮液下自主混糅发泡机理与采空区煤自燃协同防控研究”(项目编号:52474262);国家自然科学基金资助(52074277);江苏省自然科学基金资助项目(BK20211585)。

摘　　要：基于苏州昆山某冷库火灾事故,通过分析冷库火灾特点和液氮特性,阐述液氮灭火的优越性和机理,研究液氮灭火技术在冷库火灾中的可行性和有效性。本次冷库火灾应急救援首次采用低温液氮直接灌注技术进行灭火,停止灌注液氮后的12小时内,两冷库内温度始终维持在-9℃以下,冷库可视距离从6m提高到15m,3天后启封无复燃,灭火工作对冷库设备没有二次损伤,该技术在扑灭类似火灾场景具有广阔的应用前景。Based upon a cold storage fire accident in Kunshan,Suzhou,this paper analyzes the characteristics of cold storage fires and liquid nitrogen,elaborates on the superiority and mechanism of liquid nitrogen fire extinguishing,and studied the feasibility and effectiveness of liquid nitrogen fire extinguishing technology in cold storage fires.The low temperature liquid nitrogen direct injection technology for fire extinguishing was adoption for the first time in emergency rescue of a cold storage fire,within 12 hours after stopping the injection of liquid nitrogen,the temperature inside the two cold storages were remained below-9℃,and the visible distance of the cold storages increased from 6 meters to 15 meters,after 3 days of unsealing,there was no reignition,and the firefighting work did not cause secondary damage to the cold storage equipment.This technology has broad application prospects in extinguishing similar fire scenarios.

关 键 词：冷库火灾 液氮灭火 火灾特点 直接灌注 

分 类 号：TB6[一般工业技术—制冷工程]