Guo Shaoshuai, Jing Guoxun, Wang Yuansheng, Sun Yue
School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450011, China.
Henan International Joint Laboratory of Man Machine Environment and Emergency Management, Anyang Institute of Technology, Anyang, Henan 455000, China.
ACS Omega. 2024 Oct 11;9(42):43203-43210. doi: 10.1021/acsomega.4c07555. eCollection 2024 Oct 22.
In order to investigate the overpressure and flame propagation characteristics of gas explosions in turning pipelines, this study designed a transparent organic glass pipeline test system with different turning angles (30°, 60°, 90°, 120°, and 150°) and conducted a series of experimental studies to analyze the explosion shock wave overpressure and flame propagation behavior. The experimental results show that with the increase of the turning angle of the pipeline, the overpressure of the explosion shock wave significantly increases. In terms of flame propagation characteristics, when the turning angle is small, the flame can adhere to the outer wall of the pipeline corner and gradually fill the entire pipeline section. When the turning angle increases, the flame forms a blank area near the outer wall of the corner, and the blank area expands with the increase in the corner. In addition, the increase in the turning angle promotes the increase in the velocity of the explosion flame front. The research results of this review are of great significance for a deeper understanding of the mechanism of gas explosions in turning pipelines and evaluating their potential hazards.
为了研究转弯管道中气体爆炸的超压和火焰传播特性，本研究设计了具有不同转弯角度（30°、60°、90°、120°和150°）的透明有机玻璃管道试验系统，并进行了一系列实验研究，以分析爆炸冲击波超压和火焰传播行为。实验结果表明，随着管道转弯角度的增加，爆炸冲击波的超压显著增加。在火焰传播特性方面，当转弯角度较小时，火焰可附着在管道拐角的外壁上，并逐渐充满整个管道截面。当转弯角度增大时，火焰在拐角外壁附近形成一个空白区域，且该空白区域随着拐角的增大而扩大。此外，转弯角度的增加促使爆炸火焰前沿速度增大。本综述的研究结果对于更深入理解转弯管道中气体爆炸的机理以及评估其潜在危害具有重要意义。
