煤矿井下输送机电设备喷雾除尘技术研究
Research on spray dust removal technology of underground electromechanical conveyor in coal mine
迟青君 1宋长军 1李景屿 1雷鹏2
作者信息
- 1. 平庄煤业(集团)有限责任公司,内蒙古 赤峰 024076
- 2. 常州科研试制中心有限公司,江苏 常州 213000
- 折叠
摘要
煤矿井下输送过程中产生的大量粉尘会对煤矿安全生产造成严重影响,常用的降尘方式为喷雾降尘.喷嘴结构及流动参数是影响喷雾降尘效果的重要因素之一.采用计算流体力学软件对喷嘴喷雾降尘进行建模,分析喷嘴入口段、出口段孔径和锥形区锥角变化等因素对喷嘴雾化效果的影响.通过软件模拟水流经喷嘴雾化后在分析域中的流动分布情况发现:对于锥形喷嘴,为兼顾覆盖范围和除尘效率,喷嘴出口孔径优选 2.5 mm,入口段内径优选 6.5 mm,入口段长度选用流场中高速区面积最大的 5 mm,锥角优先选用 120°.
Abstract
A large amount of dust produced during the underground transportation in coal mine would seriously affect the safety of coal mine production.The common dust removal method was spray dust removal,and the nozzle structure and flow parameters were important factors affecting the dust removal effect of spray.CFD software was used to model the dust fall of nozzle spray and analyze the influence of nozzle inlet/outlet pore size and cone angle changes on the nozzle atomization effect.Through the software simulation of water flow distribution in the analysis domain after nozzle atomization,it was found that for the conical nozzle,in order to accommodate both coverage range and dust removal efficiency,the nozzle outlet pore size should be optimized at 2.5 mm,the inner diameter of the inlet section should be optimized at 6.5 mm,the length of the inlet section should be selected at 5 mm which had the largest high-speed area in the flow field,and the preferred cone angle should be 120°.
关键词
喷雾除尘/锥形喷嘴/煤矿粉尘/孔径/锥角Key words
spray dust removal/conical nozzle/coal mine dust/pore size/cone angle引用本文复制引用
基金项目
国家自然科学基金资助项目(51975569)
出版年
2024
NETL
NSTL
万方数据