基于多普勒技术的气水喷嘴雾场粒度速度实验研究

发布时间：2018-01-27 05:06

  本文关键词： 气水喷雾 相位多普勒干涉仪 粉尘防治 雾场粒度 雾场速度　出处：《煤矿安全》2017年12期 　论文类型：期刊论文

【摘要】：为了分析供气供水压力对煤矿井下气水喷雾粒度速度的影响,针对粉尘的性质特点以及危害类型,成功地设计并进行气水雾化喷嘴雾化特性实验。实验运用全新一代的相位多普勒干涉仪(PDI),从喷嘴所成雾场的宏观特性和微观特性2个方面对喷嘴的雾化效果进行了分析,确定了不同条件下喷嘴所成雾场中雾滴粒径及速度分布规律。通过对实验数据的分析,得出在水压不变的情况下,随着气压的增加,雾滴粒径逐渐减小;沿雾场的轴线方向,随着测点与喷嘴间距离的增大,雾滴粒径呈增大趋势,雾滴轴向分速度及径向分速度都随之减小。
[Abstract]:In order to analyze the influence of the pressure of gas supply and water supply on the particle size velocity of gas-water spray in coal mine, the characteristics and hazard types of dust are analyzed. A new generation of phase Doppler interferometer (PDI) was used to test the atomization characteristics of gas-water atomizing nozzle successfully. The atomization effect of the nozzle was analyzed from two aspects: macroscopic and microscopic characteristics of the atomizing field formed by the nozzle. The distribution law of droplet diameter and velocity in the fog field formed by the nozzle under different conditions is determined. Through the analysis of the experimental data, it is concluded that the droplet diameter decreases gradually with the increase of air pressure under the condition of constant water pressure. Along the axis of the fog field, with the increase of the distance between the measuring point and the nozzle, the droplet size increases, and the axial and radial velocity of the droplet decreases.
【作者单位】： 山东科技大学矿业与安全工程学院;枣庄矿业集团七五煤矿;
【基金】：国家重点研发计划课题资助项目(2017YFC0805202) 国家自然科学基金面上资助项目(51774198) 青岛市科技计划资助项目(16-6-2-52-nsh)
【分类号】：TD714.4
【正文快照】： 近些年来,国内大量学者对喷嘴雾化特性做了大量的实验[1-7]。马素平、寇子明等对喷雾降尘的机理做出了深入研究[8]。陈斌等利用自行设计的实验平台对喷嘴雾化特征做出了实验研究。程卫民、周刚等针对高压喷雾雾化粒度的降尘性能做出了研究和分析[9]。魏琪、岑旗钢等搭建了相位，

本文编号：1467648