摘要
为研究泄爆门对瓦斯爆炸特征参数的影响,并验证其泄爆效果和快速封闭性能,自制大尺寸瓦斯爆炸管道试验系统,在瓦斯体积分数为5.5%、7.5%、9.5%和11.5%的工况下进行爆炸试验,通过数据采集系统收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:4种工况下,爆炸压力波压力峰值分别衰减了42.25%、50.54%、53.27%和52.88%;随着瓦斯体积分数的增大,爆炸压力峰值以二次函数关系衰减,平均封闭火区14 h,说明泄爆门具有显著泄爆特性和快速封闭火区的作用;温度变化特征基本一致,无论瓦斯体积分数如何变化,泄爆门对瓦斯爆炸火焰没有抑制作用;4种工况下火焰传播速度最大平均值分别为103.56、105.73、136.67和138.34 m/s。
In order to study influence of explosion venting door on characteristic parameters of gas explosion,and verify its venting effect and fast sealing performance,gas explosion tests were carried out by using self-made large explosion pipeline system for conditions of 5.5%,7.5%,9.5%and 11.5%gas concentration.Then,explosion parameters were measured by data acquisition system,and their change laws and flameproof effect were analyzed.The results show that pressure peak are attenuated by 42.25%,50.54%,53.27%and 52.88%respectively under four working conditions.Along with increase of gas concentration,explosion pressure peak decays as a quadratic function,and average enclosed fire zone is14 h,indicating that explosion venting door has significant venting characteristics and can close fire zone rapidly.Temperature change law is basically same,and in spite of gas concentration changes,explosion venting door does not inhibit gas explosion flame.Under four operating conditions,the maximum average value of flame propagation speed are 103.56,105.73,136.67 and 138.34 m/s separately.
作者
李昂
司俊鸿
赵希栋
周西华
LI Ang;SI Junhong;ZHAO Xidong;ZHOU Xihua(School of Emergency Technology and Management,North China Institute of Science and Technology,Beijing 101601,China;Hebei Provincial Key Lab of Mine Disaster Prevention and Control,Langfang Hebei 065201,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
2020年第6期92-97,共6页
China Safety Science Journal
基金
国家自然科学基金资助(51804120,51804117)
中央高校基本科研业务费资助(3142019006,3142018028)
廊坊市科技计划项目(2020013031)。
关键词
泄爆门
瓦斯爆炸
大直径管道
快速封闭
压力峰值
explosion venting door
gas explosion
large-diameter pipeline
rapid sealing
peak pressure
作者简介
李昂(1989--),男,满族,辽宁阜新人,博士,讲师,主要从事矿井瓦斯灾害防治方面的研究。E-mail:thankliang@163.com;司俊鸿,副教授;赵希栋,讲师;周西华,教授。
