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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%。
Loop conductivity sensors have wide application value in the measurement of two-phase flow parameters. It is important to study the sensitive field distribution and response characteristics of the ring-shaped conductivity sensors in two-phase flow field to clarify the sensor sensing mechanism and improve the accuracy of parameter measurement. In order to solve the measurement problem of gas-liquid two-phase flow rate, the structure of annular conductivity sensor was determined by finite element numerical analysis method. The physical calibration of static calibration experiment verified the dimensionless voltage value of liquid phase in typical two-phase flow The experimental results show that the non-dimensional voltage value of the phase content measured by the sensor is basically the same as the measured value of the liquid phase content at the inlet, with a relative error of ± 10%.