虚拟冲击分离效能的多因素影响机制研究  

Study on the Mechanism of the Influence of Multiple Factors on the Effectiveness of Virtual Impact Separator

作　　者：于海明[1] 程煜 程卫民[1] 王玉环 董慧 徐荣萧 YU Haiming;CHENG Yu;CHENG Weimin;WANG Yuhuan;DONG Hui;XU Rongxiao(School of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,Shandong,China)

机构地区：[1]山东科技大学安全与环境工程学院,山东青岛266590

出　　处：《材料导报》2025年第7期126-133,共8页Materials Reports

基　　金：国家自然科学基金重点项目(51934004)。

摘　　要：为了有效解决煤矿呼吸粉尘分离效率低的问题,基于Euler-Lagrange方法建立了描述虚拟冲击分离器内部风流-粉尘耦合运移的数学模型。采用精准3D打印技术实现了分离器三维结构实体化,并进行分离效能实验研究,实验结果与模拟结果的分离效率最大偏差为6.32%。进而分析了粉尘密度、弱流比及采样流量多种影响因素对分离效能的影响机制。研究发现,随着粉尘粒径的增加,各粒径点的分离效能曲线均呈现下降趋势,密度为1 610 kg/m~3的分离效能曲线相对最接近BMRC曲线;弱流比模拟组中,在1/16~1/10范围内的弱流比条件下可获得最佳分离效能,同时发现采样流量控制在1.8~4.5 L/min之间时,可有效减少采样流量对各粒径分离效能的影响。研究结果可为虚拟冲击分离技术的开发和应用提供理论参考。In order to effectively solve the problem of low separation efficiency of breathing dust in coal mines,a mathematical model describing the coupled airflow-dust transport inside the virtual impact separator was established based on the Euler-Lagrange method.A three-dimensional separator,materialized by precise 3D printing technology,was used to study the separation efficiency,and the maximum deviation of the separation efficiency between the experimental results and the simulation results was 6.32%.Then,the mechanism of the three influencing factors of dust density,secondary flow ratio and sampling flow rate on the separation efficiency was analyzed by mathematical model.It was found that the separation efficiency curve of each particle size showed a gradual decrease with the increase of dust size,and the separation efficiency curve with a density of 1610 kg/m3 was the closest to the BMRC curve.The effect of sampling flow rate on the separation efficiency of each particle size can be effectively reduced when the sampling flow rate is controlled between 1.8 L/min and 4.5 L/min.The results of the study provide theoretical guidance for the development and application of virtual impact separation technology.

关 键 词：粉尘监测 呼吸性粉尘 虚拟冲击 分离效能 

分 类 号：TD714[矿业工程—矿井通风与安全]