旋风分离器料腿中颗粒流量电容相关测试分析与实验研究  

MASS FLOW MEASUREMENT OF SOLIDS FLOW IN THE DIPLEG OF A CYCLONE SEPARATOR USING ELECTRICAL CAPACITANCE SENSORS

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2期176-180,共5页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50076045)~~

摘　　要：应用电容层析成像技术和相关分析理论,对常温下旋风分离器料腿中固体颗粒浓度、速度和流量进行了测试研究。浓度分布采用单层电容传感器,速度分布采用双层电容传感器得出相关流动信号,利用相关理论分析得出速度和流量。这种测试方法的优点在于不破坏原有实验系统的运行特性,属于非侵入式、在线的快速测试技术,能同时得出固体的断面浓度分布和流量。实验结果与称重计量测试结果吻合良好,说明电容相关技术测量流量的可行性和可靠性。Theoretical and experimental studies are carried out on cross correlation techniques using electrical capacitance sensors applied to non-intrusive restrictive velocity and mass flow rate measurement of cyclone separator. The mass flow rate is determined from two parameters, namely the solids velocity and the volumetric concentration. The former is measured by cross-correlating the capacitance fluctuations caused by the conveyed solids, and the latter by the image reconstruction method. The two parameters are then combined to give the solids mass-flow rate. The method is not affected by the opacity of the apparatus. In addition, the measurements are taken non-intrusively and rapidly(~200 frames per second) with makes online analysis possible. The feasibility and reliability of this measuring method are verified by the experimental results.

关 键 词：循环流化床锅炉 旋风分离器料腿 电容层析成像技术 颗粒流量 电容相关法 测试 实验 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]