气固两相流相浓度传感器的三维优化设计  

Three⁃dimensional Optimization Design of Gas⁃solid Two⁃phase Flow Phase Concentration Sensor

作　　者：刘丽君 杨道业 张研 孙正 LIU Li-jun;YANG Dao-ye;ZHANG Yan;SUN Zheng(School of Electrical Engineering and Control Science,Nanjing Tech University,Nanjing 211816,China;School of Computer and Information,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]南京工业大学电气工程与控制科学学院,江苏南京211816 [2]合肥工业大学计算机与信息学院,安徽合肥230009

出　　处：《仪表技术与传感器》2020年第11期10-14,共5页Instrument Technique and Sensor

摘　　要：针对带有对称保护电极的螺旋表面极板电容式传感器结构进行优化改进。采用三维有限元的方法重点分析了极板长度并综合考虑极板张角、管壁厚度、管道介电常数对传感器检测场内灵敏度分布和均匀性误差参数的影响。搭建不同极板长度的传感器进行实验,实验结果显示传感器极板长度为6R1(R1为管道内半径)时,均匀性误差最小,仿真结果与实验结果基本一致。The structure of spiral surface electrode capacitive sensor with symmetrical protection electrode was optimized and improved.The effect of plate length and the influence of plate angle,tube wall thickness,and pipe dielectric constant on aspects of the sensitivity distribution and uniformity error parameters were analyzed by using the direction of the three⁃dimensional finite ele⁃ment method.Through analysis and comparison,the sensor with the different pipe length was built and the experimental results show that the sensor plate length was 6R1(R1 is the pipe inner diameter),the uniformity error parameter was the smallest,the ex⁃perimental results were in agreement with the simulation results.

关 键 词：电容式传感器 灵敏场 三维 均匀性误差 极板长度 

分 类 号：TH212[机械工程—机械制造及自动化]