超声法测量高浓度水煤浆若干问题研究  

THE RESEARCH OF CHARACTERIZING CONCENTRATED WATERCOAL SLURRY USING ULTRASONIC METHOD

作　　者：薛明华[1] 苏明旭[1] 蔡小舒[1] 董黎丽[1] 尚志涛[1] 

机构地区：[1]上海理工大学,上海200093

出　　处：《工程热物理学报》2007年第z1期213-216,共4页Journal of Engineering Thermophysics

基　　金：国家863计划(No.2006AA032349);上海市教委科技青年基金(No.04EC30);发展基金(No.F50103)项目资助

摘　　要：利用超声法在线测量高浓度水煤浆具有无需稀释、快速、在线、非接触等优势。本文探讨了水煤浆中的浓度测量问题。在理论分析和实验基础上得出了水煤浆中声速与浓度的关系,指出水煤浆温度、稳定性、粒径与声速的关系和对浓度测量的影响,并从理论上提出了水煤浆中粒径测量的方法。本文设计的实验装置适合在线测量中的应用。There are many advantages of ultrasonic method for on-line characterizing dense coal-water slurry,such as no-dilution,high concentration,real-time and no-invasion.In this paper,the concen- tration of water-coal slurry is discussed.The relation between ultrasonic velocity and concentration of water-coal slurry is evaluated on the basis of model analysis and experiments.The results show that the temperature,stabilization,particle size influence the ultrasonic velocity in concentrated water-coal slurry.The ultrasonic instrument has been developed to apply in the on-line measurement.

关 键 词：超声法 水煤浆 声速 浓度 颗粒粒径 

分 类 号：TK31[动力工程及工程热物理—热能工程]