中国安全科学学报 ›› 2024, Vol. 34 ›› Issue (6): 82-89.doi: 10.16265/j.cnki.issn1003-3033.2024.06.1139

• 安全工程技术 • 上一篇    下一篇

多孔材料对泄爆管道LPG爆炸抑制效应的影响研究

关文玲1(), 矦逸飞1,2, 任常兴3, 董呈杰1, 张网3   

  1. 1 天津理工大学 环境科学与安全工程学院,天津 300384
    2 天津长芦海晶集团有限公司,天津 300450
    3 应急管理部 天津消防研究所,天津 300381
  • 收稿日期:2023-12-11 修回日期:2024-03-18 出版日期:2024-06-28
  • 作者简介:

    关文玲 (1978—),女,陕西渭南人,博士,副教授,主要从事工业过程安全方面的研究。E-mail:

    任常兴 副研究员

    董呈杰 讲师

    张网 副研究员

  • 基金资助:
    2022年天津市应用基础研究多元投入重点项目(22JCZDJC00840)

Influence study on inhibitory effect of porous materials on LPG explosion in vent pipe

GUAN Wenling1(), HOU Yifei1,2, REN Changxing3, DONG Chengjie1, ZHANG Wang3   

  1. 1 School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China
    2 Tianjin Changlu Haijing Group Co.,Ltd., Tianjin 300450,China
    3 Tianjin Fire Science and Technology Research Institute of MEM,Tianjin 300381, China
  • Received:2023-12-11 Revised:2024-03-18 Published:2024-06-28

摘要:

为探究多孔材料对泄爆管道液化石油气(LPG)爆炸传播特性的影响特征,采用自主搭建的气体爆炸测试平台,分析不同厚度及孔隙度的碳化硅多孔材料对火焰传播特性和爆炸超压的影响。结果表明:安装多孔材料可有效阻止泄爆管道中LPG爆炸火焰的传播;随着多孔材料孔隙度和厚度的增加,LPG火焰的传播距离、传播速度和强度均减小,其中,材料孔隙度对阻火效果的影响更大;同时多孔材料可降低泄爆管道中LPG的最大爆炸超压,当材料安装位置后端气体未被引燃时,增加多孔材料的孔隙度和厚度,材料前端(PT1、PT2)的最大爆炸超压增大,材料后端(PT3)的最大爆炸超压接近于静态破膜压力。材料孔隙度和厚度的阻火效应表明:在工程应用中,当材料强度达标后,应优先考虑增加材料的孔隙度来进行阻火。

关键词: 多孔材料, 泄爆管道, 液化石油气(LPG), 抑制效应, 爆炸超压

Abstract:

In order to investigate the influence of porous materials on the explosion propagation characteristics of LPG in vent pipes, experiments were conducted on a self-built gas explosion test platform. The inhibitory effect of silicon carbide materials with different thicknesses and porosities on the flame propagation characteristics and explosion overpressure in the vent pipe was investigated. The results show that porous materials can effectively prevent the propagation of LPG explosion flame. With the increase of porosity and thickness, the propagation distance, propagation speed and intensity of LPG flame are reduced, and the porosity has a greater effect on the fire resistance than the thickness. The installation of porous materials also reduces the maximum explosion overpressure. When LPG is not ignited behind the installation location, increasing the porosity and thickness of porous materials, the maximum explosion overpressure in front of the material (PT1, PT2) increases, and that behind the material (PT3) is close to the static film-breaking pressure. The firestopping effect of material porosity and thickness shows that increasing the porosity of the material for firestopping should be prioritized when the strength of the material is up to standard in engineering applications.

Key words: porous materials, vent pipe, liquefied petroleum gas (LPG), inhibiting effect, explosion overpressure

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