粉尘隔爆翻板阀功能实验与模拟研究

doi:10.12068/j.issn.1005-3026.2021.08.015

东北大学学报（自然科学版） ›› 2021, Vol. 42 ›› Issue (8): 1166-1173.DOI: 10.12068/j.issn.1005-3026.2021.08.015

粉尘隔爆翻板阀功能实验与模拟研究

李刚，康瑾，崔震，胡朋

(东北大学资源与土木工程学院，辽宁沈阳110819)

修回日期:2020-11-27 接受日期:2020-11-27 发布日期:2021-09-02
通讯作者: 李刚
作者简介:李刚(1969-)，男，河南信阳人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目( 51774068，51874070)；国家重点研发计划项目( 2017YFC0804703)；中央高校基本科研业务费专项资金资助项目( N180701011)．

Functional Experiment and Simulation Study of Explosion Isolation Flap Valves

LI Gang， KANG Jin， CUI Zhen， HU Peng

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Revised:2020-11-27 Accepted:2020-11-27 Published:2021-09-02
Contact: LI Gang
About author:-
Supported by:
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摘要/Abstract

摘要： 为探究粉尘隔爆翻板阀功能的影响因素及其作用机理，基于1m³爆炸测试系统，以玉米淀粉为介质，进行DN600隔爆翻板阀的功能实验研究，并利用Fluent软件建立二维同尺寸燃烧仿真模型，采用动网格技术6DOF求解翻板动态关闭过程，对隔爆阀安装在不同距离时的粉尘爆炸过程进行数值模拟.结果表明，模拟得到的压力发展、火焰传播及翻板关闭过程与实验一致;翻板关闭速度主要受粉尘爆炸压力上升速率影响，爆炸压力上升速率越大，关闭速度越快，并在翻板后方产生负压形成回流;且得到实验条件下隔爆翻板阀最小安装距离是其管径的6~7倍.

关键词: 隔爆;粉尘爆炸;隔爆翻板阀;数值模拟;玉米淀粉

Abstract: In order to study the influencing factors and mechanism of the function of dust explosion isolation flap valves， the corn starch isolation experiments were conducted based on the 1m³ standard explosion test system and the DN600 flap valve. In addition， the Fluent software was applied to simulate the isolation process of the flap valve at different installation distances. The two-dimensional corn starch dust explosion model was built and the dynamic process of flap closing was solved by the 6 DOF dynamic mesh model. The results show that the pressure development， flame propagation behaviors and flap closing process are consistent with the experiment. Furthermore， the flow velocity distribution in the flow field during the flap closing process is revealed， and the speed of the flap movement is affected significantly by the rising rate of dust explosion pressure. The increasing rate of explosion pressure rise often leads to the increasing closing speed. The backflow behind the valve forms due to the negative pressure， and the minimum installation distance of the DN600 flap valve should be 6 to 7 times of its pipe diameter.

Key words: explosion isolation; dust explosion; explosion isolation flap valve; numerical simulation; corn starch

中图分类号:

X932

李刚，康瑾，崔震，胡朋. 粉尘隔爆翻板阀功能实验与模拟研究[J]. 东北大学学报（自然科学版）, 2021, 42(8): 1166-1173.

LI Gang， KANG Jin， CUI Zhen， HU Peng. Functional Experiment and Simulation Study of Explosion Isolation Flap Valves[J]. Journal of Northeastern University(Natural Science), 2021, 42(8): 1166-1173.

参考文献

[1]Going J E，Lombardo T.Dust collector explosion prevention and control［J］.Process Safety Progress，2007，26(2):164-176.
[2]Li G，Yang H X，Yuan C M，et al.A catastrophic aluminium-alloy dust explosion in China［J］.Journal of Loss Prevention in the Process Industries，2016，39:121-130.
[3]Taveau J.Dust explosion propagation and isolation［J］.Journal of Loss Prevention in the Process Industries，2017，48:320-330.
[4]王健，钟圣俊，毛俭，等.泄爆容器中粉尘爆炸的试验研究与数值模拟［J］.中国安全科学学报，2012，22(4):54-58.(Wang Jian，Zhong Sheng-jun，Mao Jian，et al.Experimental investigation and numerical simulation of dust explosions in vented vessel［J］.China Safety Science Journal，2012，22(4):54-58.)
[5]Taveau J.Secondary dust explosions:How to prevent them or mitigate their effects?［J］.Process Safety Progress，2012，31(1):36-50.
[6]Snoeys J，Going J E，Taveau J R.Advances in dust explosion protection techniques:flameless venting［J］.Procedia Engineering，2012，45:403-413.
[7]Taveau J.Application of dust explosion protection systems［J］.Procedia Engineering，2014，84:297-305.
[8]Taveau J R，Lemkowitz S M，Hochgreb S，et al.Metal dusts explosion hazards and protection［J/OL］.Chemical Engineering Transactions，2019，77［2020-10-25］.https://doi.org/10.3303/CET1977002.
[9]Sippel M，Schepp P，Hesener U.New findings for the application of systems for explosion isolation with explosion venting［J］.Chemical Engineering Transactions，2016，48:529-534.
[10]Moore P E，Spring D J.Design of explosion isolation barriers［J］.Process Safety and Environmental Protection，2005，83(2):161-170.
[11]Cao W G，Gao W，Peng Y H，et al.Experimental and numerical study on flame propagation behaviors in coal dust explosions［J］.Powder Technology，2014，266:456-462.
[12]Cao W G，Qin Q F，Gao W，et al.Experimental and numerical studies on the explosion severities of coal dust/air mixtures in a 20-L spherical vessel［J］.Powder Technology，2017，310:17-23.

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粉尘隔爆翻板阀功能实验与模拟研究

Functional Experiment and Simulation Study of Explosion Isolation Flap Valves

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