自然科学版 英文版
自然科学版 英文版
自然科学版 英文版
自然科学版 英文版
英文版编委
自然科学版 英文版
英文版首届青年编委

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(自然科学版)

Journal of Central South University

第47卷    第8期    总第264期    2016年8月

[PDF全文下载]    [Flash在线阅读]

    

文章编号:1672-7207(2016)08-2884-07
感应式荷电细水雾对瓦斯爆炸传播速度的影响
徐永亮1, 2, 3,王兰云1, 2,余明高1, 3,万少杰1,梁栋林1

(1. 河南理工大学 安全科学与工程学院,河南 焦作,454003;
2. 中国矿业大学 煤炭资源与安全开采国家重点实验室,江苏 徐州,221116;
3. 煤炭安全生产河南省协同创新中心,河南 焦作,454003
)

摘 要: 为了研究荷电细水雾对瓦斯爆炸火焰传播速度的抑制效果及抑爆机理,基于静电感应原理,设计荷电细水雾发生及其瓦斯抑爆装置,并开展一系列荷电细水雾抑制瓦斯爆炸的实验研究。分析在不同荷电极性、荷电电压及雾通量下,荷电细水雾对爆炸火焰传播速度的影响。研究结果表明:与普通细水雾相比,荷电细水雾能更有效地降低瓦斯爆炸火焰传播速度,且随着荷电电压的增大,荷电细水雾对火焰传播速度的抑制效果显著增强;同时荷负电荷的细水雾抑爆效果比荷正电荷的细水雾更好。当细水雾加载电压为8 kV时,火焰平均传播速度下降62.12%,火焰瞬时速度下降45.67%。

 

关键词: 感应荷电;火焰速度;瓦斯抑爆;速度峰值

Influence of inductively charged water mist on flame velocity of gas explosion
XU Yongliang1, 2, 3, WANG Lanyun1, 2, YU Minggao1, 3, WAN Shaojie1, LIANG Donglin1

1. College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China;
2. State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology, Xuzhou 221116, China
3. Collaborative Innovation Center of Coal Safety Production of Henan Province, Jiaozuo 454003, China

Abstract:In order to study the suppression effect and mechanism of gas explosion on flame propagation velocity by charged water mist, based on the principle of electrostatic induction, a charged water mist generating device was designed, and the experimental researches of charged water mist on gas explosion suppression were carried out. The effects on flame propagation velocity of gas explosion by charged water mist were analyzed at different charged polarities, charged voltages and mist fluxes. The results show that compared with ordinary water mist, the charged water mist can lower flame propagation velocity of gas explosion effectively, and with the increase of charge voltage, the suppression effect is enhanced significantly; meanwhile, the negatively charged water mist has a better suppression effect on gas explosion than positively charged water mist. When the charged voltage is 8 kV, the average flame propagation speed drops by 62.12%, and instantaneous flame velocity drops by 45.67%.

 

Key words: induction charging; flame velocity; gas explosion suppression; peak velocity

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765(中) 88836963(英) 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号