西安科技大学学报2025，Vol.45Issue(5)：884-894,11.DOI:10.13800/j.cnki.xakjdxxb.2025.0505
障碍物对管道内掺氢甲烷爆炸传播特性的影响
Influence of obstacles on the explosion propagation characteristics of hydrogen-doped methane in pipelines
摘要
Abstract
To investigate the influence of obstacles on the explosion propagation of hydrogen-doped methane in pipelines,a transparent explosion pipeline experimental device was used to analysis the phased characteristics of the obstruction rate and position of obstacles on the propagation of hydrogen-doped methane and air premixed gas explosions,and to compare and analyze them with pure methane explosions.The results show that before the flame reaches the obstacle,the obstacle hinders the flame propagation.Hydrogen-doped methane flames are less affected by obstacles than pure methane flames,and the flame propagation speed is negatively correlated with the blockage rate;After the flame passes through the obstacle,the promoting effect of obstacles on the explosion propagation of hydrogen-doped methane is stronger than that of pure methane,and the flame propagation speed is positively correlated with the blockage rate;When the equivalence ratio is 1,the maximum flame propagation speed of hy-drogen-doped methane with a hydrogen blending ratio of 20％is 5％higher than that of pure methane due to the influence of obstacles,and the increase rate of maximum explosion pressure is 10％higher;The pressure wave of hydrogen-doped methane explosion inside the barrier pipeline causes multiple re-flections and superposition,and the overall pressure changes from low-frequency oscillation to high-fre-quency oscillation attenuation.The flame exhibits a oscillation propagation characteristic of"accelera-tion-deceleration-reacceleration".The research results can provide a reference for optimizing the layout and explosion-proof design of hydrogen-doped methane pipeline systems.关键词
掺氢甲烷/障碍物/火焰形态/火焰传播速度/爆炸压力Key words
hydrogen-doped methane/obstacles/flame morphology/flame propagation speed/explosion pressure分类
资源环境引用本文复制引用
程方明,侯振东,罗振敏,苟籽妍,曹萌亚..障碍物对管道内掺氢甲烷爆炸传播特性的影响[J].西安科技大学学报,2025,45(5):884-894,11.基金项目
国家自然科学基金项目(52174200,52474250) （52174200,52474250）
