阻火器壳体结构与爆轰火焰状态关系研究
The Study of the relationship between the structure of the fire arrester shell and the state of the detonation flame
作者：王晓东(四川大学制造科学与工程学院)；岳建平(四川大学制造科学与工程学院， 成都 610065;中煤科工集团重庆研究院有限公司， 重庆 400093)；龙 伟(四川大学制造科学与工程学院， 成都 610065)；黄吉民(四川大学制造科学与工程学院， 成都 610065)；罗红波(四川大学制造科学与工程学院， 成都 610065)
Author：WANG Xiao-Dong(School of Manufacturing Science Engineering, Sichuan University, Chengdu 610065, China)；YUE Jian-Ping(School of Manufacturing Science Engineering, Sichuan University, Chengdu 610065, China; 2.China Coal Technology Engineering Group Chongqing Research Institute, Chongqing 400093, China)；LONG Wei(School of Manufacturing Science Engineering, Sichuan University, Chengdu 610065, China)；HUANG Ji-Min(School of Manufacturing Science Engineering, Sichuan University, Chengdu 610065, China)；LUO Hong-Bo(School of Manufacturing Science Engineering, Sichuan University, Chengdu 610065, China)
收稿日期：2018-01-31 年卷（期）页码：2018,55(4):705-711
期刊名称：四川大学学报: 自然科学版
Journal Name：Journal of Sichuan University (Natural Science Edition)
关键字：防爆轰阻火器；爆轰压力；火焰速度；数值仿真；大型管道
Key words：Flame arrester; Explosive pressure; Flame speed; Numerical simulation; Large pipe
基金项目：煤矿区煤层气抽采利用关键技术与装备（2016ZX05045）；四川省科技计划重点研发项目（2017GZ0352）
中文摘要
针对大型煤矿瓦斯运输管道甲烷爆轰过程中火焰压力波和速度与阻火器结构的匹配问题，对阻火器壳体结构变化与管道内火焰压力和速度的关系进行了仿真研究，仿真中对不同尺寸的阻火器壳体结构建立了二维几何模型和网格模型，采用RNC k-e湍流模型和通用有限速率燃烧模型，运用FLUENT软件对煤管内可燃气体爆轰过程进行了模拟. 得到了阻火器壳体内径尺寸、阻火器内有无障碍物与爆轰火焰压力和速度的变化规律，通过分析阻火器内火焰速度和压力的规律，为管道爆轰阻火器的设计和选型提供更为准确的参考依据.
英文摘要
In view of the matching problem of flame pressure wave and velocity with the structure of fire arrester in the process of methane detonation, the authors conducted simulation study to analyses the relationship between the structural change of flame arrester housing and the pressure and speed of flame in the pipeline. During the simulation progress, two-dimensional geometric models and mesh models were built for different sizes of fire arrester shell structure. The RNC k-e turbulence model and the general finite rate combustion model were applied to simulate the detonation process of combustible gas in the coal tube by FLUENT software. We tried to understand the change law of the inner diameter of the flame arrester shell, the porosity of the flame arrester and the pressure and velocity of the detonation flame by analyzing the law of flame velocity and pressure in the flame arrester. The results provide us with an accurate reference for the design and selection of the pipe detonation arrester.
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