Research on air content measurement system in liquid pipe based on capacitive sensor
Capacitive sensor has the characteristics of non-invasive,low cost and simple structure.It is widely applied in air content measurement in liquid pipe.Based on capactive sensor,a air content measrement system is designed to measure air content in a liquid pipe with 25 mm outer diameter and 21 mm inner diameter.In order to verify the accuracy of the air content measurement system,a visual verification platform is built.The gas-liquid two-phase images are acquired,and the air content in the pipeline section is calculated.The air content deviation of the left and right cross sections in the visual window is analyzed and the influence of the acquisition position deviation on the validity of verification method is studied.The research shows that the air content measured by the sensor system is consistent with that obtained by the image processing.The deviation of the average air content on the left and right cross sections of the window is not more than 3.097%.The accuracy of the designed air content measurement system is good,and the proposed visual verification method can effectively verify the accuracy of the air content measurement system.
万方数据
维普
