摘要
为了提高电磁电导法管外测量原油含水率线圈传感器的灵敏度，对影响灵敏度的关键参数——线圈传感器的距离进行了优化设计。在保持最优频率和电流强度不变的情况下，首先，使用ANSYS进行电磁仿真，通过比较发射线圈和屏蔽线圈在管道内部产生的磁场强度大小确定了两线圈之间的最优距离为0．6m；然后，利用MATLAB从0．1m到1m对接收线圈上的电压进行了数据计算，结果表明0．6m处的电压值最大，最优距离使原油含水率的有用信号从0．1m或1m的0．03μV提高到了0．6m的1．27μV，使传感器的灵敏度提高了41倍；最后，实际测试了两线圈距离从0．1m至1m接收线圈上多点电压值，实验结果表明0．6m处的电压值最大，进一步证明了0．6m为两个线圈间的最优距离。
In order to improve the coils sensor sensitivity of the electromagnetic conductivity method to measure the crude oil water content ratio, the distance of the coils sensor which is the key parameter to effect sensitivity is optimized. In the case of the invariants of the optimal frequency and current strength, electromagnetic simulation is done by using ANSYS firstly. The optimal distance 0. 6 m between the two coils is determined with comparing the magnetic field intensity value inside the pipeline of transmitter coil and shield coil. Then the receiving coil voltages are calculated from 0. 1 m to 1 m by using MATLAB, and then the result shows that largest voltage is at 0. 6 m, the optimal distance can improve the useful signal of the crude oil water content from 0. 03 μV of 0. 1 m or 1 m to 1.27 μV of 0. 6 m. The sensitivity of the sensor is improved by 41 times. Finally the multi-point voltage values of receiving coil are measured actually from 0. 1 m to 1 m. The experiment result shows the largest voltage is at 0. 6 m,and this proves that the 0. 6 m is the most optimal distance of the two coils, which lays the foundation for the accurate measurement of the crude oil water content ratio.
出处
《计量学报》
CSCD
北大核心
2014年第5期488-493,共6页
Acta Metrologica Sinica
关键词
计量学
原油含水率
电导率
管外测量
线圈传感器
距离参数优化
Metrology
Water content ratio of crude oil
Conductivity
Measurement outside pipeline
Coil sensor
Optimization of the distance parameter
