掘进机循环负压降尘装置参数优化研究  

Optimizing parameters for cyclic negative pressure dust suppression devices for roadheaders

作　　者：邢旭文 何少杰 田园 肖鹏 武琨琪 张英华[2] 张金宝 滕胜杰 XING Xuwen;HE Shaojie;TIAN Yuan;XIAO Peng;WU Kunqi;ZHANG Yinghua;ZHANG Jinbao;TENG Shengjie(Xinzhuang Coal Mine,Qingyang Xinzhuang Coal Industry Co.,Ltd.,Qingyang Gansu 745000,China;School of Resources and Safety Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]庆阳新庄煤业有限公司新庄煤矿,甘肃庆阳745000 [2]北京科技大学资源与安全工程学院,北京100083

出　　处：《矿业科学学报》2025年第2期271-284,共14页Journal of Mining Science and Technology

基　　金：华能煤业有限公司自立科技项目(HNKJ21-HF37)。

摘　　要：有效开展掘进巷道工作面粉尘治理是确保井下作业安全的重要前提之一。针对高浓度粉尘环境中传统的喷雾降尘方式效率相对低下的问题,根据负压卷吸与喷雾降尘协同增效的理念研发一种应用于掘进机上的循环负压降尘装置。通过建立仿真模型对射流卷吸机制的影响因素开展数值模拟,基于装置内外循环负压流场变化规律优化引射管形状、叶轮设置、文丘里管数量等参数,并采用相似实验的方式验证优化后装置的降尘效率。结果表明:在假设喷雾条件不变的情况下,当装置的引射管形状采用圆锥形、叶轮片数量为8片、叶轮转速为2400 r/min、文丘里管数量为10个、叶轮安装位置距引射管入口300 mm时,循环负压性能最为理想,其相似模型的降尘效率可达87.4%。Effectively managing dust in the advancing headings of coal mines is essential for ensuring underground operational safety.Traditional dust suppression methods,such as spraying,are relatively inefficient in high-concentration dust environment during excavation operations.This study therefore introduces a cyclic negative pressure dust suppression device for roadheaders via synergistic enhancement of negative pressure suction and spray dust suppression.We set up a simulation model for numerical simulation on the influencing factors of jet stream suction mechanisms.We optimized the parameters,including the shape of injection nozzle,blade configuration,and the number of Venturi tubes,based on the variation rules of the negative pressure flow field both inside and outside the device.Similarity experiments were also conducted to validate dust suppression efficiency of the optimized device based on its variation patterns in internal and external cyclic negative pressure flow field.Results indicate that under constant spraying conditions, the device exhibited optimal performance in terms of cyclic negative pressure with a conical nozzle, 8 blades, a blade speed of 2 400 rpm, 10 Venturi tubes, and a blade installation 300 mm from the nozzle inlet, resulting in a dust suppression efficiency of up to 87. 4% in the similar model.

关 键 词：粉尘防治 循环负压 射流卷吸机制 参数优化 

分 类 号：TD714.4[矿业工程—矿井通风与安全]