顺风流扰动下喷雾场粒度-速度分布规律实验  

Experiment on Distribution of Particle Size and Velocity in Spray Field Under Disturbance of Airflow

作　　者：邱晗[1] 朱良[2] 范韬[1] 

机构地区：[1]山东科技大学矿业与安全工程学院,山东青岛266590 [2]青岛钢铁控股集团有限责任公司,山东青岛266590

出　　处：《煤矿安全》2016年第9期20-23,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(U1261205;51474139);中国博士后科学基金面上资助项目(2015M570602);山东科技大学杰出青年科技人才支持计划资助项目(2014JQJH106);山东煤炭安全高效开采技术与装备协同创新中心资助项目;2014年度青岛市黄岛区科技资助项目(2014-1-30);矿山灾害预防控制省部共建国家重点实验室培育基地开放课题基金资助项目(MDPC2013KF13);中国煤炭工业协会2013年度科学技术研究指导性计划资助项目(MTKJ2013-358)

摘　　要：为研究在顺风流扰动下的喷雾场粒度-速度分布规律,建立了基于相位多普勒激光干涉仪的喷嘴高压雾化实验平台。根据井下喷雾除尘的实际情况,同时结合现有的实验条件,设计了实验测点以及实验风速,并选取了以孔径为2.0 mm含X型导流芯混合喷嘴为主要喷嘴进行实验。得到了在顺风条件下,整个雾场的雾滴速度整体增加,而雾滴粒径整体减小但分布更加均匀。通过数据的比较,得知在4 MPa喷雾压力下,雾场的宏观、微观特性已经足以满足井下降尘的需求。To reach the distribution of speed and particle size in spray field under wind disturbance, the high - pressure nozzle atomi- zing experimental platform was built based on phase Doppler laser interferometer. According to practical situation of spray dust suppres- sion in the coal mine, combined with the existing experimental conditions either, we design the location and wind speed of test points and choose nozzle of 2.0 mm size with X - diversion core mixing nozzle as the main nozzle to carry out experiment. We draw a conclu- sion that the trend of velocity of mist goes up and the trend of particle size of mist goes down but the distribution of particle size gets more uniform under the condition of wind. By the way, the water injection pressure of 4 MPa can fit the demands of mine dust removing in microscopic features and macro characteristics by comparing experimental data.

关 键 词：顺风流扰动 喷雾场 相位多普勒 喷雾降尘 粒度-速度 

分 类 号：TD714.2[矿业工程—矿井通风与安全]