两相流测量中环形电导传感器特性研究  

Characteristic of Ring-shaped Conductance Sensor in Two-phase Flow Measurement

作　　者：施艳艳[1] 董峰[1] 谭超[1] 

机构地区：[1]天津市过程检测与控制重点实验室(天津大学),天津市南开区300072

出　　处：《中国电机工程学报》2010年第17期62-66,共5页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50776063);天津市应用基础及前沿技术研究计划重点项目(08JCZDJC17700)~~

摘　　要：环形电导传感器在两相流参数测量中具有广泛的应用价值,研究两相流场中环形电导传感器的敏感场分布和响应特性,对于明确传感器感应机制、提高参数测量的精度具有重要的意义。针对气液两相流相含率的测量问题,应用有限元数值分析方法确定了环形电导传感器结构;通过物理模拟静态标定实验,验证了典型两相流动状态下液相含率的无量纲电压值表示形式与理论推导一致;并通过实际流动状态下实验测试,得出传感器测量的相含率无量纲电压值与入口处液相含量测量值基本一致,相对误差±10%。Ring-shaped conductance sensor has broad value in the measurement of two-phase flow parameters.It is of great importance to study its sensitivity distribution and response characteristic so as to explicit sensor mechanism and improve measuring accuracy.Aiming at volume fraction measurement in the gas-liquid two-phase flow,the geometry of ring-shaped conductance sensor was determined based on finite element numerical analysis.Static calibration of typical flow pattern simulation shows that relationship between liquid fraction and dimensionless voltage is in accordance with theory.Experiment in gas-water two-phase flow loop gives that dimensionless voltage measured by ring-shaped conductance sensor agrees well with liquid fraction in the inlet and relative error is ±10%.

关 键 词：气液两相流 环形电导传感器 有限元数值分析 液相含率 

分 类 号：TQ022.4[化学工程]