摘要
为研究泄爆门对瓦斯爆炸特性参数的影响,自制大直径瓦斯管道爆炸试验系统,在有无泄爆门2种工况下进行瓦斯爆炸试验;通过高速数据采集模块及工控机采集瓦斯爆炸特性参数,分析其变化特征和泄爆效果。结果表明:瓦斯质量分数为9.5%时泄爆门工况下的最大压力是空管工况的1.65倍,压力达到稳定状态的时间有所缩减;爆炸冲击波从测点1传播到测点3时,泄爆门工况下爆炸压力衰减率为62.5%,空管工况仅为14.3%,泄爆门显著衰减了爆炸压力;火焰温度的衰减与泄爆门无关;2种工况下火焰传播速度的最大平均值分别为136.67和113.56 m/s。
In order to study the effect of explosion venting door on gas explosion characteristics,explosion experimental system for large diameter gas pipeline was constructed,and the gas explosion tests were carried out under two conditions with and without explosion venting door.The gas explosion characteristic parameters were measured by high speed data acquisition system and industrial personal computer,and the change laws of characteristic parameters and explosion venting effects were analyzed.The results show that under the condition of gas concentration 9.5%,although the maximum pressure of explosion venting door condition is 1.65 times of that under the condition of empty pipe,the time of pressure reaching steady state is reduced,that when the explosion shock wave propagates from the measuring point 1 to point 3,explosion pressure decay rate of explosion venting door condition is 62.5%,while that is only 14.3%under the condition of empty pipe,that the venting door can significantly attenuate explosion pressure,that the attenuation of temperature has nothing to do with explosion venting door,and that the maximum average flame propagation velocity is 136.67 and 113.56 m/s under two conditions.
作者
李昂
司俊鸿
周西华
李雪冰
LI Ang;SI Junhong;ZHOU Xihua;LI Xuebing(School of Safety Engineering,North China Institute of Science and Technology,Beijing 101601,China;Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education,Fuxin Liaoning 123000,China;School of Safety Science and Engineering,Liaoning Technical University,Fuxin Liaoning 123000,China)
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2019年第11期109-115,共7页
China Safety Science Journal
基金
国家自然科学基金资助(51804120)
中央高校基本科研业务费资助(3142019006,3142018028)。
关键词
瓦斯爆炸
泄爆门
大直径管道
压力峰值
火焰传播速度
gas explosion
explosion venting door
large-diameter pipeline
peak pressure
flame propagation velocity
