三维LDV/APV系统在降尘喷嘴雾特性参数测量中的应用  

Application of 3D LDV/APV system in the measurement of the parameters of water-mist produced by dust reduction nozzle

作　　者：王信群[1] 秦俊[2] 谢正文[1] 何国敏[3] 

机构地区：[1]中国计量学院质量与安全工程学院,浙江杭州310018 [2]中国科学技术大学火灾科学国家重点实验室,安徽合肥230026 [3]中国中钢集团公司武汉安全环保研究院,湖北武汉430081

出　　处：《煤炭学报》2010年第2期269-272,共4页Journal of China Coal Society

基　　金：科技部科研院所技术开发专项资金资助项目(NCSTE-2000-JKZX-040)

摘　　要：阐述了三维LDV/APV系统用于测量水喷雾流场特性参数的原理,对降尘喷嘴雾特性参数进行了精确测量。结果表明:喷嘴工作压力增大,雾粒径减小,雾场径向覆盖范围扩大,水雾/含尘空气体积通量加大;旋转射流主体段,轴向速度在径向及轴向衰减平缓,径向及切向速度在径向呈单峰形分布;旋转射流卷吸周围含尘气体的能力增强,降尘效率提高。Principle of the Laser Doppler Velocimetry （LDV） and Adaptive Phase Doppler Velocimetry （APV） system was summarized and the flow field of water mist produced by dust reduction nozzle was measured. Experiment results show that the particle size of water mist is reduced, the range along radial direction, total volume flux of water mist and air in the jet flow is increased as work pressure of the nozzle increased. In the main body of the jet flow, the attenuation of axial velocity both in axial and radial direction is gentle, the radial and tangential velocity have single peak distribu- tion in radial direction, and the efficiency of dust reduction is improved by swirling water jet.

关 键 词：三维速度分布 LDV/APV系统 降尘喷嘴 粒径 

分 类 号：TD714.41[矿业工程—矿井通风与安全]