基于超细干粉的电气初期火灾自动灭火技术研究

发布时间：2018-01-07 17:04

本文关键词：基于超细干粉的电气初期火灾自动灭火技术研究　出处：《中国安全科学学报》2015年11期 　论文类型：期刊论文

【摘要】：为解决电气初期火灾扑救难的问题,设计出一种基于磷酸二氢铵超细干粉灭火剂和探火管的新型自动灭火装置。通过实体配电柜灭火试验,研究这种装置的灭火性能。计算分析磷酸二氢铵超细干粉灭火剂临界灭火浓度。结果表明,用探火管式超细干粉灭火装置能快速、高效扑灭配电柜火灾,超细干粉灭火剂最低设计质量浓度仅为75 g/m3,装置响应时间为10~33 s,灭火时间为2~3 s。探火管式磷酸二氢铵超细干粉灭火装置所要求的最低灭火剂设计浓度约为探火管式七氟丙烷灭火装置的1/9,探火管式二氧化碳灭火装置的1/33。
[Abstract]:In order to solve the problem of extinguishing fire in the early stage of electricity, a new type of automatic fire extinguishing device based on ultrafine dry powder fire extinguishing agent and fire detection pipe of ammonium dihydrogen phosphate was designed. The fire extinguishing test was carried out by solid distribution cabinet. The fire extinguishing performance of this device is studied. The critical fire extinguishing concentration of ultrafine dry powder fire extinguishing agent of ammonium dihydrogen phosphate is calculated and analyzed. The results show that the fire extinguishing device of detecting fire tube type ultrafine dry powder can quickly and efficiently extinguish the fire of distribution cabinet. The minimum design mass concentration of ultrafine dry powder extinguishing agent is only 75 g / m ~ 3, and the response time of the device is 10 ~ 33 s. The fire extinguishing time is 2 ~ 3 s. The minimum design concentration of fire extinguishing agent required by the fire-detecting tube-type ultrafine ammonium dihydrogen phosphate extinguishing device is about 1/9 of that of the detecting tube-type heptafluoropropane fire extinguishing device. 1 / 33 of the carbon dioxide fire extinguishing device with a probe tube.
【作者单位】：公安部天津消防研究所;
【基金】：国家自然科学基金资助(51176078) “十二五”国家科技支撑计划项目(2014BAK17B02)
【分类号】：TU892
【正文快照】： 0引言随着医院、商场、仓储库房等典型场所的电气设备迅速增多,电气火灾持续高发,呈逐年上升趋势。据统计[1-2],近年来电气火灾比例占火灾总数的30%以上,其中重特大火灾事故时有发生,给人民生命和财产造成了重大损失。导致这类火灾事故的根本原因是配电柜等电气设备及电线电缆

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