|本期目录/Table of Contents|

[1]陈鹏,孙永夺.泡沫金属对甲烷/空气爆燃火焰的淬熄实验研究[J].中国安全生产科学技术,2017,13(7):37-41.[doi:10.11731/j.issn.1673-193x.2017.07.006]
　CHEN Peng,SUN Yongduo.Experiment study on quenching effect of foam metal on methane-air deflagration flame[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(7):37-41.[doi:10.11731/j.issn.1673-193x.2017.07.006]
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泡沫金属对甲烷/空气爆燃火焰的淬熄实验研究

《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
13
期数:
2017年7期
页码:
37-41
栏目:
学术论著
出版日期:
2017-07-31

文章信息/Info

Title:
Experiment study on quenching effect of foam metal on methane-air deflagration flame
文章编号:
1673-193X(2017)-07-0037-05
作者:
陈鹏1; 2; 孙永夺1
（1.中国矿业大学（北京） 资源与安全工程学院,北京 100083；2.中国矿业大学（北京）煤炭资源与安全开采国家重点实验室,北京 100083）
Author(s):
CHEN Peng1; 2;  SUN Yongduo1
(1. School of Resource and Safety Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China; 2. State Key Laboratory of Coal Resources and Safety Mining, China University of Mining and Technology-Beijing, Beijing 100083, China)
关键词:
气体爆炸; 爆炸火焰速度; 淬熄效应
Keywords:
gas explosion;  explosion flame speed;  quenching effect
分类号:
X932
DOI:
10.11731/j.issn.1673-193x.2017.07.006
文献标志码:
A
摘要:
为研究多孔材料对甲烷/空气预混气体爆燃火焰的抑制淬熄效果，运用一套自主设计的管道爆炸抑制系统进行实验研究。在实验中运用高速摄像机记录爆燃火焰在穿过多孔材料板时的淬熄过程，采用20，40，60，80PPI (孔目数) 的4种多孔材料，研究不同孔目数的多孔材料对爆燃火焰传播的形态结构、火焰传播速度以及抑制淬熄等特性的影响。结果表明：多孔材料的孔目数对爆燃火焰传播的早期阶段影响较小，爆燃火焰都经历了半球形火焰和指形火焰阶段；当火焰传播到多孔材料板时，孔目数越大对火焰的降速作用越强，80PPI工况下爆燃火焰不能穿过多孔材料板，即发生淬熄。实验结果揭示了多孔材料对火焰的淬熄作用与微孔通道和火焰的相互作用有关。
Abstract:
In order to study the suppression and quenching effect of porous material on the deflagration flame of premixed methane-air gas, the experimental study was carried out by using the self-developed pipe explosion suppression system. The high-speed camera was applied to record the quenching process of deflagration flame passing through the porous material plate, and four types of porous material with the mesh number of 20, 40, 60 and 80 PPI respectively were adopted. The influence of porous material with different mesh numbers on the characteristics of deflagration flame, such as the morphological structure, the propagating speed and the suppression and quenching was studied. The results showed that the mesh number of porous material had less influence in the early stage of deflagration flame propagation, and all the deflagration flames went through the stages of hemispherical flame and finger-shaped flame. When the flame propagated to the porous material plate, the larger the mesh number, the stronger the speed reduction effect on the flame, and the deflagration flame could not propagate through the porous material plate under the condition of 80 PPI, namely the occurrence of quenching. The results revealed that the quenching effect of porous material on the flame is related with the interaction between the micropore passage and the flame.

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备注/Memo

备注/Memo:
国家自然科学基金项目(51274205)；中国矿业大学煤炭资源与安全开采国家重点实验室开放课题(SKLCRSM10KFB13)0
更新日期/Last Update: 2017-08-21