主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2025, Vol. 44 ›› Issue (5): 600-608.

• • 上一篇    下一篇

双口协同泄爆对受限空间掺氢甲烷爆炸特性影响研究

张子霜1,2, 段玉龙1,2, 温子阳1,2, 杨杰1,2, 刘力文1,2, 段先琪1,2   

  1. （1.重庆科技大学 安全科学与工程学院，重庆 401331； 2.重庆油气生产安全与风险控制技术重点实验室，重庆 401331）
  • 收稿日期:2024-05-17 修回日期:2024-07-12 出版日期:2025-05-15 发布日期:2025-05-15
  • 作者简介:张子霜，重庆科技大学安全科学与工程学院硕士研究生，主要从事油气爆炸动力学研究，重庆市沙坪坝区陈家桥街道大学城东路20号，401331。
  • 基金资助:
    国家自然科学基金（52274177）；重庆市教委科学技术研究项目（KJQN202101503）；重庆科技大学研究生创新计划项目（YKJCX2420714）；重庆市研究生科研创新项目（CYS240800）

Study on the effect of dual-port coordinated venting on the explosion characteristics of hydrogen-doped methane in confined spaces

Zhang Zishuang1,2, Duan Yulong1,2,Wen Ziyang1,2, Yang Jie1,2, Liu Liwen1,2, Duan Xianqi1,2   

  1. (1. School of Safety Science and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China; 2. Chongqing Key Laboratory of Oil and Gas Production Safety and Risk Control, Chongqing 401331, China)
  • Received:2024-05-17 Revised:2024-07-12 Online:2025-05-15 Published:2025-05-15

摘要： 为探讨双口协同泄爆对受限空间掺氢甲烷爆炸特性的影响，利用自建的预混气体爆炸试验平台开展了双泄爆口不同面积以及位置对气体爆炸火焰和超压影响的试验。选定掺氢甲烷中的掺氢比为10%，选取3种泄爆口尺寸40、60、80 mm，4个泄爆位置距点火源分别为200、400、600、800 mm。试验结果表明，双口火焰传播时间随着泄爆位置距离点火源的增加而加快。在3种不同泄爆面积情况下，距点火源越近的泄爆口到达最大火焰速度越快。根据火焰速度与压力分析可知，双泄爆口位置越靠近点火源的泄压效果最好并且泄爆面积越大泄爆效果越好。

关键词: 双口泄爆, 受限空间, 掺氢甲烷, 爆炸超压

Abstract: In order to explore the dual-port synergistic explosion on the restricted space hydrogen-doped methane explosion characteristics, this paper uses the self-built premixed gas explosion experimental platform to carry out experiments on the effects of different areas of the double vent and the location of the explosion on the gas explosion flame and the overpressure. The hydrogen doping ratio in the hydrogen-doped methane was selected as 10%, and three venting sizes of 40 mm, 60 mm, and 80 mm were chosen, with four venting locations of 200 mm, 400 mm, 600 mm, and 800 mm from the ignition source. The experimental results show that the double-ported flame propagation time accelerates with increasing distance of the deflagration position from the ignition source. Based on the analysis of flame speed and pressure, the closer the position of the double explosion vents is to the ignition source, the better the pressure relief effect will be; and the larger the area of the explosion vents is, the better the explosion relief effect will be.

Key words: double ventilated orifice, confined space, hydrogen-doped methane, explosion overpressure