湍流状态下氢气爆炸极限的试验研究  

Test on explosive limits of hydrogen in turbulent flow

作　　者：霍雨江 谭迎新[1] 谢溢月 HUO Yu-jiang TAN Ying-xin XIE Yi-yue(School of Chemical Engineering and Environment, North University of China, Shanxi Taiyuan 030051 ,China)

机构地区：[1]中北大学化工与环境学院,山西太原030051

出　　处：《消防科学与技术》2017年第8期1040-1043,共4页Fire Science and Technology

基　　金：山西省重点研发计划(指南)项目(201603D121012)

摘　　要：为研究氢气在流动状态下的爆炸特性,运用FRTA爆炸极限测试仪测试了不同湍流强度下氢气的爆炸极限。通过调节容器内搅拌子的转速表征不同的湍流强度,并运用二维旋涡模型分析氢气的爆炸极限与湍流强度的关系,得出爆炸上限、爆炸下限与湍流强度的拟合关系式。结果表明:宏观静止状态下氢气的爆炸极限为4.59%~73.67%;当搅拌子转速从0 rad/min增大到1 200 rad/min时,氢气的爆炸下限上升到5.011%,爆炸上限下降到72.402%。湍流强度增加时,氢气的爆炸下限升高,爆炸上限下降,爆炸范围变窄。In order to study the explosion characteristics of hydrogen in the flow state, the explosion limit of hydrogen under different turbulence intensity was tested by FRTA explosion limit tester. The turbulence intensity was characterized by adjusting the rotational speed of the stirrer in the container and analyzed by twodimensional vortex model to get the relationship between the explosion limit of hydrogen and the turbulence intensity. The fitting equations of upper explosion limit or lower explosion limit with tur- bulence intensity were obtained. The results indicated that： the hy- drogen explosion range is 4.59%~73.67% in the macroscopic sta- tionary state. When the stir speed increases from 0 tad/rain to 1 200 rad/min, the upper explosion limit of hydrogen declines to 5.011%, the lower explosion limit of hydrogen reaches 72.402%. It is concluded that when the turbulence intensity increases, the hydrogen lower explosion limit hydrogen increases, the upper explosion limit declines and the explosion range becomes narrower.

关 键 词：氢气 爆炸极限 湍流强度 二维旋涡模型 

分 类 号：X932[环境科学与工程—安全科学] TK124[动力工程及工程热物理—工程热物理]