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[1]尹渊博,王雅真,刘翠伟,等.无约束条件下甲烷-空气预混气体爆炸有效体积计算[J].油气储运,2021,40(11):1299-1305.[doi:10.6047/j.issn.1000-8241.2021.11.014]
　YIN Yuanbo,WANG Yazhen,LIU Cuiwei,et al.Calculation of effective explosive volume of premixed methane-air gas under unconstraint conditions[J].Oil & Gas Storage and Transportation,2021,40(11):1299-1305.[doi:10.6047/j.issn.1000-8241.2021.11.014]
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无约束条件下甲烷-空气预混气体爆炸有效体积计算

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 40 期数: 2021年11期 页码: 1299-1305 栏目: 运行与管理 出版日期: 2021-11-25
Title:
Calculation of effective explosive volume of premixed methane-air gas under unconstraint conditions
文章编号:
1000-8241（2021）11-1299-07
作者:
尹渊博1; 王雅真2; 刘翠伟1; 李玉星1
1. 中国石油大学（华东）储运与建筑工程学院·山东省油气储运安全省级重点实验室；2. 中国石化青岛安全工程研究院
Author(s):
YIN Yuanbo1;  WANG Yazhen2;  LIU Cuiwei1;  LI Yuxing1
1. College of Pipeline and Civil Engineering, China University of Petroleum (East China)//Shandong Provincial Key Laboratory of Oil & Gas Storage and Transportation Safety; 2. SINOPEC Research Institute of Safety Engineering
关键词:
天然气管道; 泄漏; 甲烷爆炸; 峰值超压; 有效体积
Keywords:
natural gas pipeline; leakage; methane explosion; peak overpressure; effective volume
分类号:
TE88
DOI:
10.6047/j.issn.1000-8241.2021.11.014
文献标志码:
A
摘要:
天然气泄漏体积是影响管道泄漏爆炸后果的重要因素，受甲烷与空气浓度比例限制，并非所 有的泄漏气体均参与爆炸反应。为此，建立适用于甲烷-空气预混气体无约束爆炸峰值超压的计 算模型，利用Fluent 软件模拟分析甲烷-空气预混气体体积与峰值超压的关系，并对计算模型进行 了验证，进而得到甲烷参与爆炸反应的有效体积与峰值超压之间的规律，提出有效体积的计算方 法。结果表明：通过所建立的数值仿真模型得到的爆炸峰值超压传播时间与实验结果规律一致，爆 炸峰值超压衰减规律与已有研究结果相符；甲烷参与爆炸反应的有效体积为实际预混气体体积的 0.11~0.12 倍，且在实际预混气体体积较大时具有较高精度。研究成果可为天然气爆炸范围模拟预 测、后果评价及防护资源配置提供理论基础。（图6，表6，参23）
Abstract:
The leakage volume of natural gas is an important factor affecting the consequences of pipeline leakage and explosion. Restricted by the ratio of methane and air concentration, not all of the leakage gas will explode. Therefore, a calculation model for the explosive peak overpressure of premixed methane-air gas was established under unconstraint conditions. The relationship between the volume of premixed methane-air gas and the peak overpressure was simulated and analyzed with the Fluent software, and the calculation model was verified. Moreover, the law between the effective explosive volume of methane and the peak overpressure was obtained, and a method for calculating the effective volume was proposed. The results show that the propagation time of the explosion peak overpressure obtained by the numerical simulation model is consistent with the experimental results, and the attenuation law of the explosion peak overpressure is consistent with that as indicated by the existing research. Additionally, the effective volume of methane involved in the explosion is about 0.11 to 0.12 times the actual volume of the premixed gas, and the precision is high in the case the actual premixed gas volume is large. Hence, the results can provide a theoretical basis for the simulation and prediction of natural gas explosion, the consequence evaluation and the configuration of protection resources. (6 Figures, 6 Tables, 23 References)

参考文献/References:


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备注/Memo

收稿日期：2021-04-25；修回日期：2021-07-28；编辑：张静楠
基金项目：国家自然科学基金资助项目“基于湍声耦合机理的输气管道泄漏声波传播规律研究”，51704317；国家自然科学基金资助项目“气液混输管道泄漏声波产生机理与传播特性研究”，51774313；山东省重点研发计划项目“基于动态压力及贝叶斯网络的油气管道泄漏预警技术”，2019GSF111026；中石油科技创新基金资助项目“基于动态压力及贝叶斯网络的输气管道泄漏预警技术”，2018D-5007-0603。
作者简介：尹渊博，男，1997 年生，在读博士生，2015 年毕业于中国石油大学（华东）油气储运工程专业，现主要从事油气管道泄漏后果分析方向的研究工作。地址：山东省青岛市黄岛区中国石油大学（华东），266580。电话：17864268256。Email：yyuanbo@126.com
通信作者：李玉星，男，1970 年生，教授，博士生导师，1997 年博士毕业于中国石油大学（华东）油气储运工程专业，现主要从事油气长距离管输技术方向的研究工作。地址：山东省青岛市黄岛区中国石油大学（华东），266580。电话：13370809333。Email：lyx13370809333@163.com

更新日期/Last Update: 2021-11-25