转弯对管道内甲烷爆炸传播特性的影响研究  

Study on the influence of turning on the propagation characteristics of methane explosion in pipeline

作　　者：田慧玲[1] 高建成 朱传杰[3] 孙豫敏[3] 

机构地区：[1]平顶山工业职业技术学院,河南平顶山467000 [2]中国平煤神马集团能源化工研究院,河南平顶山467000 [3]中国矿业大学安全工程学院,江苏徐州221116

出　　处：《消防科学与技术》2017年第5期581-584,共4页Fire Science and Technology

基　　金：国家自然科学基金资助项目(51204174;11531010);爆炸科学与技术国家重点实验室开放课题资助项目(KFJJ15-17M)

摘　　要：设计实验方案,测试不同转弯角度对管道内甲烷爆炸传播特性的影响。转弯角度分别为52°、90°和145°,测试不同转弯角度下管道内甲烷爆炸超压峰值及火焰传播速度的变化规律。结果表明,转弯之前,转弯管道内超压峰值的变化趋势及火焰传播速度与长直管道中基本一致;转弯处,超压峰值迅速增大,而火焰传播速度却大幅度降低;转弯后,转弯角度越小,超压峰值增幅越大,火焰传播速度加速度越大。Set the test plan, the influence of different turning angles on the propagation characteristics of methane explosion in pipel{ne was studied. The turning angles were set as 52°,90° and 145°, the peak value of explosion overpressure and the flame propagation speed were tested. The results showed that before the turning, the change trend of peak overpressure and flame propagation velocity in turning pipeline and straight pipeline was the same; at the turn ing point, the peak overpressure increased rapidly while the flame propagation speed reduced greatly; after the turning, the smaller the turning angle was, the greater the peak overpressure was, and the greater the flame propagation speed was.

关 键 词：转弯管道 气体爆炸 爆炸超压 火焰传播速度 

分 类 号：X932[环境科学与工程—安全科学] TK124[动力工程及工程热物理—工程热物理]