中国电机工程学报2011，Vol.31Issue(z1)：181-186,6.
超声非接触式水煤浆粒度表征的研究
Characterization of Particle Size Distribution of Coal-water Slurries With Non-destructive Ultrasonic Method
摘要
Abstract
For studying the on-line measurement of particle size distribution (PSD) in coal-water slurries, theoretical and experimental investigations were implemented based on ultrasonic attenuation spectrum approach (UAS). ECAH and multiple scattering models were combined to describe the transmission process in highly concentrated slurries, and then the inverse algorithm of particle size distributions was put forward using optimum regularization technique (ORT). In experiment, a couple of 5MHz broad-frequency ultrasonic transducers were employed in the destructive and nondestructive testing (NDT), in which an novel data processing method based on exponential fit was developed in NDT. The measurement and analysis illustrate that the destructive method can be completely replaced by NDT. Moreover, the UAS approach has revealed a good consistence with optical microscope analysis, which indicates that the measured PSD of coal-water slurries by UAS is feasible and reliable.关键词
超声/水煤浆/非接触测量/粒度分布/衰减谱Key words
ultrasound/ water-coal slurries/ nondestructive testing (NDT)/ particle size distribution (PSD)/attenuation spectrum分类
能源科技引用本文复制引用
呼剑,苏明旭,蔡小舒..超声非接触式水煤浆粒度表征的研究[J].中国电机工程学报,2011,31(z1):181-186,6.基金项目
国家自然科学基金项目(50836003,51076106) （50836003,51076106）
上海市科委国际合作项目(09520709400). （09520709400）
