氮气-细水雾-滑移装置对甲烷爆炸特性的影响  

Effect of N 2-water mist-slip device on methane explosion characteristics

作　　者：段玉龙 卜云兵 龙凤英 李元兵 黄俊 俞树威 DUAN Yulong;BU Yunbing;LONG Fengying;LI Yuanbing;HUANG Jun;YU Shuwei(School of Safety Engineering,Chongqing University of Science and Technology,Chongqing 401331,China;Chongqing Key Laboratory of Oil and Gas Production Safety and Risk Control,Chongqing 401331,China;State Key Laboratory Cultivation Base for Gas Geology and Gas Control,Henan Polytechnic University,Jiaozuo Henan 454003,China)

机构地区：[1]重庆科技学院安全工程学院,重庆401331 [2]油气生产安全与风险控制重庆市重点实验室,重庆401331 [3]河南省瓦斯地质与瓦斯治理重点实验室--省部共建国家重点实验室培育基地,河南焦作454003

出　　处：《中国安全科学学报》2022年第10期83-89,共7页China Safety Science Journal

基　　金：重庆市教委科学技术研究项目(KJQN202101503);油气生产安全与风险控制重庆市重点实验室开放基金资助(cqsrc202111);河南省瓦斯地质与瓦斯治理重点实验室——省部共建国家重点实验室培育基地开放基金资助(WS2021A04);重庆科技学院科技创新研究生项目(YKJCX2020727)。

摘　　要：为进一步探究多种抑爆技术之间的协同抑爆效应,在自行搭建的100 mm×100 mm×1000 mm方形管道爆炸试验平台上,开展无压力(0 MPa)与低压力(0.1、0.2 MPa)氮气-细水雾、不同弹性系数(0.42、0.81 N/mm)限位滑移装置共同作用下甲烷爆炸特性试验研究。结果表明:受含氮气的细水雾与滑移装置耦合影响,“郁金香”形火焰结构发育受阻;滑移装置使燃烧区形成可变容受限空间,其体积大小与火焰传播速度成正比;各工况爆炸超压均出现衰减,且已燃区衰减率稍大于未燃区,2种弹性系数下0.1 MPa氮气-细水雾作用时,已燃区超压峰值分别下降12.92%和16.07%,未燃区超压峰值分别下降11.97%和15.12%。In order to further explore the synergistic explosion suppression effect among various explosion suppression technologies,the methane explosion characteristics under the combined action of no pressure(0 MPa),low pressure(0.1,0.2 MPa)nitrogen-water mist and different elastic coefficients(0.42,0.81 N/mm)limit slip devices were carried out on a self-built 100 mm×100 mm×1000 mm square pipeline explosion platform.The results show that the development of the"tulip"\|shaped flame structure is hindered by the coupling effect of the nitrogen-containing water mist and the sliding device,the sliding device makes the combustion zone form a variable-capacity restricted space,its volume is proportional to the flame propagation speed,the explosion overpressure in each working condition decayed,and the decay rate of the burned area was slightly greater than that of the unburned area.Under the action of 0.1 MPa nitrogen-water mist under the two elastic coefficients,the overpressure peak in the burned area decreased by 12.92%and 16.07%,respectively,and the overpressure peak in the unburned area decreased by 11.97%and 15.12%,respectively.

关 键 词：甲烷爆炸 氮气 细水雾 滑移装置 可变容受限空间 

分 类 号：X932[环境科学与工程—安全科学]