摘要：为了测量油品喷雾过程的雾化性能,通过对喷嘴雾化粒径的指标和雾化粒径测定方法的分析,利用激光粒度仪及粒径发生装置设计喷嘴雾化实验系统,并对实验系统的工作原理进行描述;在不同喷雾压力下测定煤基柴油特征平均粒径d_v10、d_v50、d_v90、d_[3,2]、d_[4,3]数据。结果表明:柴油雾化过程分为形成阶段、扩散阶段、稳定阶段;喷雾压力越大,雾滴特征平均粒径d_v10、d_v50、d_v90、d_[3,2]、d_[4,3]参数值越小,雾化效果越好,并且随着喷雾压力的增大,液滴雾化粒径减小的趋势变缓。

关键词：激光粒度仪；油品；喷雾粒径

Abstract： In order to measure the oil atomization performance of spray process， the indicators of atomizing nozzle particle size and methods of measuring particle size were analyzed. A nozzle atomization experimental system was designed based on laser particle size analyzer and particle generating device， and the working principles of the experimental system were described. The charateristic sizes of atomized diesel drops， such asd_v10、d_v50、d_v90、d_[3,2]、d_[4,3]， were measured at different spray pressures. The results show that the atomization process of diesel is divided into formation phase， diffusion phase and stable phase. The greater the spray pressures are， the smaller the charateristic sizes of d_v10、d_v50、d_v90、d_[3,2]、d_[4,3] of atomized diesel drops are， the better the atomization is. The trend of atomized diesel drops decreasing slows when the spray pressure increases. 

Keywords: laser particle size analyzer; oil; size of atomized drop