摘要
变压器油是一种易燃易爆物质,在高压电弧激励下会产生蒸气进而导致变压器爆炸的重大事故发生。基于计算流体力学方法,对变压器油闪蒸后发生的爆炸与泄爆过程进行数值模拟,研究了爆炸TNT当量分别为0.2 kg、0.6 kg、1.0 kg及顶部泄爆口面积分别为0 m^(2)、2 m^(2)、5 m^(2)的不同工况,并对抗爆门上的压力变化进行监测。结果表明:随着爆炸前可燃气体量的增加,抗爆门上所监测的最大压力逐渐增大;有泄爆口的工况与密闭空间相比抗爆门上的超压有所降低;但随着爆炸当量的增加,小面积泄爆口泄爆效果不明显。
Transformer oil is a kind of inflammable and explosive substance,which can lead to transformer explosion under certain conditions.Therefore,FLUENT software was used to simulate the explosion after transformer oil flash.The different conditions of the TNT equivalent of 0.2 kg,0.6 kg and 1.0 kg and the area of top vent is 0 m^(2),2 m^(2) and 5 m^(2) respectively were studied and the pressure change on the anti-blast door was monitored.The results show that,with the increase of combustible gas before explosion,the maximum pressure measured by the wall increases gradually.Compared with confined space,the over-pressure on the anti-blast door is lower when there is a vent,but with the increase of explosion equivalent,the effect of a small vent is not obvious.
作者
赵欣宇
杨黎波
董一夫
付万璋
吴俊
徐启明
任家帆
ZHAO Xinyu;YANG Libo;DONG Yifu;FU Wanzhang;WU Jun;XU Qiming;REN Jiafan(State Grid Electric Power Research Institute Wuhan Nanrui Co.,Ltd.,Wuhan 430074;不详)
出处
《工业安全与环保》
2021年第8期31-35,共5页
Industrial Safety and Environmental Protection
关键词
变压器油
蒸气爆炸
TNT当量
泄爆面积
transformer oil
vapor explosion
TNT equivalent
explosion venting area