Experimental study of methane explosion suppression by nitrogen twin-fluid water mist

被引：0
|
作者：
Yu M. [1 ,2 ]
Yang Y. [1 ,2 ]
Pei B. [1 ,2 ]
Niu P. [1 ,2 ]
Zhu X. [1 ,2 ]
机构：
[1] School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, 454003, Henan
[2] State Key Laboratory of Cultivation Bases Gas Geology and Gas Control, Jiaozuo, 454003, Henan
来源：
Pei, Bei (pb128@hpu.edu.cn) | 1600年 / Explosion and Shock Waves卷 / 37期
关键词：
Fine water mist; Gas explosion; Nitrogen; Twin-fluid;
D O I：
10.11883/1001-1455(2017)02-0194-07
中图分类号：
学科分类号：
摘要：
In this work, to obtain a water mist with a finer particle size under lower pressures, reduce the running costs of the explosion-suppressing spray system, and improve its efficiency and applicability, we designed a transparent organic glass pipeline (120 mm×120 mm×840 mm) as the experimental platform for gas explosion. Then N2 and fine water mist was pressed into the pipeline using a twin-fluid nozzle and experimental study of methane explosion suppression by nitrogen twin-fluid water mist was carried out adjusting the spray pressure and spray time and the explosion-suppression effectiveness of the twin-fluid water mist was investigated via analysis of the flame speed and the gas explosion overpressure. The results show that this twin-fluid water mist has a high explosion-suppressing efficiency, capable of reducing the damage degree of gas explosion. With the extension of the spray time, the peak value of the explosion flame speed, the peak overpressure and the average pressure rise rate decreased gradually. When the pressure of N2 was 0.4 MPa and the spray time was 3 s, the peak value of the velocity decreased by 60.39%, and the peak overpressure decreased by 37.76%. © 2017, Editorial Board of EXPLOSION AND SHOCK WAVES. All right reserved.
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页码：194 / 200
页数：6
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