电容层析成像技术在旋风分离器固体浓度测量中的应用  

USING ELECTRICAL CAPACITANCE TOMOGRAPHY FOR MEASURING THE SOLIDS DISTRIBUTION IN CYCLONE SEPARATOR

作　　者：王海刚[1] 刘石[1] 姜凡[1] 杨五强[2] 

机构地区：[1]中科院工程热物理研究所,北京100080 [2]曼彻斯特大学理工学院电子工程系

出　　处：《中国电机工程学报》2004年第1期174-179,共6页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50076045)。 ~~

摘　　要：旋风分离器中的固相浓度分布的在线测量是十分困 难的问题。传统的测量技术通常不能测量浓度的分布,而 少数能够进行分布测量的技术如PIV则受固体浓度的限制。电容层析成像技术是一种自20世纪90年代以来发展起来的非侵入的新型快速浓度场测量技术。它不干扰流场,不受流动中颗粒浓度、加速度、不透明等因素的制约,是一种独特和十分有前途的测量技术。该文采用电容层析技术测量旋风分离器中固相浓度的分布,研究其与入口风速和固体颗粒携带量的关系。It is very difficult to measure the distr- ibufion of solids inside a cyclone separator onlin- e.Some conventional measurements can not be used to measure the distribution of solids.Electrical capacitance tomography (ECT) is a new method to measure the volume dlstribufion of solids.It is not affected by the opacity of particles.In addition the measurements are taken non-intrusively and rapidly (-150frames per second),which suggests that fast fluctuations in the internal flow Can be measured.In this paper,ECT is used to investigate the distribution of solids in cyclone separation.The relationship between the inlet velocity and the flow rate of particles are also investigated.

关 键 词：旋风分离器 固体浓度测量 电容层析成像技术 烟尘净化设备 

分 类 号：TB4[一般工业技术]