中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (2): 53-57.doi: 10.16265/j.cnki.issn1003-3033.2017.02.010

• 安全工程技术科学 • 上一篇    下一篇

分支管道长度对油气爆炸强度影响试验研究

蒋新生 教授, 魏树旺, 徐建楠, 李国庆, 袁广强, 李阳超   

  1. 后勤工程学院 军事供油工程系,重庆 401311
  • 收稿日期:2016-11-29 修回日期:2017-01-13 出版日期:2017-02-28 发布日期:2020-11-22
  • 通讯作者: 魏树旺(1991—)男,山东德州人,硕士研究生,主要研究方向为油气安全与防护技术。E-mail:weishuwang666@163.com。
  • 作者简介:蒋新生 (1972—),男,四川德阳人,博士,教授,主要从事流体机械和油气安全与防护技术研究。
  • 基金资助:
    国家自然科学基金资助(51574254);重庆市科技计划项目(CSTC 2014yykfB90001);火灾与爆炸安全防护重庆市重点试验室建设项目(CSTC 2010CA0005)。

Experimental study on effect of length of branch on intensity of gasoline-air mixture explosion in pipeline

JIANG Xinsheng, WEI Shuwang, XU Jiannan, LI Guoqing, YUAN Guangqiang, LI Yangchao   

  1. Department of Petroleum Supply Engineering, Logistical Engineering University, Chongqing 401311, China
  • Received:2016-11-29 Revised:2017-01-13 Online:2017-02-28 Published:2020-11-22

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。

关键词: 油气爆炸, 分支管道, 爆炸波, 火焰, 模拟试验

Abstract: In order to study the effect of length of branch pipe on gasoline-air mixture explosion, experiments were carried out by using an experimental platform established by the authors. The volume fraction of the gasoline in the mixture was 1.75%. The changes of overpressure, rate of pressure rise, flame propagation velocity and flame intensity were analyzed. The results indicate that overpressure, rate of pressure rise, flame propagation velocity, flame intensity and flame duration are strengthened with the existence of branch pipe, and the longer the branch pipe is, the greater the effect will be, and that the pressure relief effect of area sudden expansion in the shorter branch and the dissipation effect of wall play an important role in the declining of flame propagation velocity in the part of the pipeline beyond the branch.

Key words: gasoline-air mixture explosion, branch pipe, explosion wave, flame, simulation experiment

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