本文選題：油氣爆炸　切入點：不同位置　出處：《振動與沖擊》2017年08期

【摘要】：為研究不同位置分支管道對油氣爆炸強度的影響,搭建了不同分支管道實驗系統(tǒng)。分別在直管道和具有不同位置分支管道的直管道中進行了油氣濃度為1.75%的爆炸實驗,并分析了爆炸超壓值、升壓速率、火焰?zhèn)鞑ニ俣纫约盎鹧鎻姸鹊忍匦詤?shù)變化情況。實驗結(jié)果表明:分支管道對直管內(nèi)的爆炸超壓、升壓速率、火焰?zhèn)鞑ニ俣�、火焰強度和火焰持續(xù)時間有強化作用,并且距離點火端越遠,強化作用越顯著,火焰?zhèn)鞑ニ俣葘鹧娉掷m(xù)時間也有重要影響;分支管道前的爆炸超壓變化曲線可以分為加速上升、膨脹泄壓、振蕩強化和振蕩衰減等4個階段,分支管道后的爆炸超壓變化曲線可以分為加速上升、振蕩強化和振蕩衰減等3個階段。
[Abstract]:In order to study the effect of branch pipelines at different locations on the explosion intensity of oil and gas, the experimental system of different branch pipelines was built. The explosion experiments of 1.75% of the concentration of oil and gas were carried out in the straight pipeline and the straight pipeline with different branches in different positions. The change of explosion overpressure, pressure rise rate, flame propagation velocity and flame intensity are analyzed. The experimental results show that the branch pipeline has the following characteristics: explosion overpressure, pressure rise rate, flame propagation velocity, etc. The flame strength and duration of the flame are enhanced, and the farther away from the ignition end, the more obvious the strengthening effect is, and the flame propagation speed also has an important effect on the flame duration. The change curve of explosion overpressure in front of branch pipeline can be divided into four stages: acceleration rise, expansion pressure relief, oscillation strengthening and oscillation attenuation. The change curve of explosion overpressure after branch pipeline can be divided into accelerated rise. There are three stages of oscillation intensification and oscillation attenuation.
【作者單位】： 后勤工程學院軍事供油工程系;
【基金】：國家自然科學基金(51574254) 重慶市科技計劃項目(CSTC2014YYKFB90001) 火災與爆炸安全防護重慶市重點實驗室建設項目(CSTC 2010CA0005)
【分類號】：TE88
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本文編號：1687838