附壁旋流风幕集尘系统数值模拟与试验研究  

Simulation and experimental study of a wall attached swirl air curtain dust collection system based on FLUENT

作　　者：贾宝山[1,2] 吴钧 陈鑫 刘雅俊[1] 王震[1] JIA Baoshan;WU Jun;CHEN Xin;LIU Yajun;WANG Zhen(College of Safety Science and Engineering,Liaoning Technical University,Fuxin 123000,Liaoning,China;Key Laboratory of Mine Thermodynamic Disaster and Prevention of Ministry of Education(Liaoning Technical University),Fuxin 123000,Liaoning,China)

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000 [2]矿山热动力灾害与防治教育部重点实验室(辽宁工程技术大学),辽宁阜新123000

出　　处：《安全与环境学报》2024年第6期2252-2260,共9页Journal of Safety and Environment

基　　金：辽宁省自然科学基金项目(2020-MS-304)。

摘　　要：大型设备工作时产生的粉尘浓度过高、粉尘扩散等问题,会影响工作人员的身体健康,甚至可能造成“粉尘爆炸”等安全问题。基于此现状提出了一种新型风幕集尘系统并介绍了其构造及应用。为了使系统的集尘效果更好,采用计算流体力学FLUENT软件进行数值模拟分析并对风幕集尘系统的工作参数进行了试验研究,得到最佳的设备工作参数及风幕的集尘效率。结果表明:(1)附壁旋流集尘风幕系统可形成稳定的螺旋风流场,大部分粉尘可以控制在风幕内侧,达到良好的集尘效果;(2)附壁旋流风幕集尘系统的射流腔条缝口的喷射角度对风幕形成效果影响最明显,风幕闭合性会随着射流腔工作角度变化而变化;(3)当射流腔条缝口角度为45°、风幕入口速度为15~25 m/s时,风幕的闭合性最好;(4)风幕的入口速度过大或过小都会使风幕的集尘效果下降;(5)吸尘盘的负压区域与风幕交界处会产生微弱湍流,但对风幕整体闭合性影响较小;(6)模拟与试验结果吻合,验证了新型附壁旋流集尘风幕技术的有效性。High dust concentration and dust dispersion caused by the operation of large-scale equipment affect the health of workers and pose safety concerns such as“dust explosions”.To deal with this problem,a novel curtain-type dust collection system is proposed and its structure and application are introduced.In order to enhance the dust collection efficiency of the system,numerical simulation analysis is conducted using Computational Fluid Dynamics(CFD)software FLUENT,and experimental research is carried out on the operating parameters of the curtain-type dust collection system.As a result,the optimal equipment operating parameters and the dust collection efficiency of the curtain can be obtained.The results indicate:(1)The wall-attached swirling dust collection curtain system can form a stable spiral airflow field,with most of the dust being controlled on the inner side of the curtain,achieving good dust collection results.(2)The ejection angle of the jet chamber slot of the wall-attached swirling curtain dust collection system has the most significant impact on the curtain formation effect,and the curtain closure varies with the change in the working angle of the jet chamber.(3)When the ejection angle of the jet chamber slot is 45°and the inlet velocity of the curtain ranges from 15 m/s to 25 m/s,the closure of the curtain shows the best effect compared to other parameters.(4)Excessively high or low inlet velocities of the curtain leads to a decrease in the dust collection efficiency of the curtain.(5)A weak turbulence is generated at the junction of the negative pressure region of the dust collector and the curtain,but it has a minor impact on the overall closure of the curtain.(6)The simulation results from the software and experimental research are consistent,validating the effectiveness of the novel wall-attached swirling dust collection curtain technology.

关 键 词：安全工程 空气幕 集尘系统 FLUENT 设备参数 数值模拟 

分 类 号：X964[环境科学与工程—安全科学]