分支管道长度对油气爆炸强度影响试验研究

发布时间：2018-04-27 06:39

本文选题：油气爆炸 + 分支管道　；参考：《中国安全科学学报》2017年02期

【摘要】：为研究不同长度分支管道对油气爆炸强度的影响,搭建不同分支管道试验系统。分别在直管道中和带有分支管道的直管道中进行油气体积分数为1.75%的爆炸试验,并分析爆炸超压值、升压速率、火焰传播速度以及火焰强度等特性参数变化情况。试验结果表明,分支管道对直管内的爆炸超压、升压速率、火焰传播速度、火焰强度和火焰持续时间有强化作用,并且分支管道越长,强化作用越显著,但是较短的分支管道由于面积突扩导致的泄压效应和管壁耗散效应占主导地位,使得分支管道后火焰传播速度下降。
[Abstract]:In order to study the effect of different length branch pipeline on the explosion intensity of oil and gas, the test system of different branch pipeline was set up. The explosion tests of 1.75% oil and gas volume fraction were carried out in the straight pipeline and in the straight pipeline with branch pipe, and the changes of the explosion overpressure value, the pressure rising rate, the flame propagation velocity and the flame intensity were analyzed. The experimental results show that the branch pipeline can enhance the explosion overpressure, pressure rise rate, flame propagation velocity, flame intensity and flame duration in the straight pipe, and the longer the branch pipeline is, the more obvious the strengthening effect is. However, the pressure relief effect and the wall dissipation effect of the short branch pipeline are dominant due to the sudden expansion of the area, which makes the flame propagation speed decrease after the branch pipeline.
【作者单位】：后勤工程学院军事供油工程系;
【基金】：国家自然科学基金资助(51574254) 重庆市科技计划项目(CSTC 2014yykf B90001) 火灾与爆炸安全防护重庆市重点试验室建设项目(CSTC 2010CA0005)
【分类号】：TE88

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