李红志, 闫晨阳, 贾文娟
国家海洋技术中心, 天津 300112

摘要:
为了提高七电极电导率传感器的测量性能，本实验对七电极电导池的结构进行了分析及优化。结合电极式电导率传感器的测量原理与热惯性理论，分析影响传感器测量性能的因素以及壳体外形对测量结果带来的影响。通过有限元分析对结构优化前后的性能进行仿真验证。数据结果表明，结构优化后的电导池内最大流速的增量增加了43.66%，灵敏度与结构优化前相比提高3.56倍，表现出更好的传感器测量性能。
关键词:电导率传感器七电极有限元分析优化设计
DOI：10.11759/hykx20201106005
分类号:P716
基金项目:国家重点研发计划重点专项项目（2017YFC1403304）；国家重点研发计划重点专项项目（2017YFC1403403，2017YFF0206402）

Structure analysis and optimization of the seven-electrode conductivity sensor
LI Hong-zhi, YAN Chen-yang, JIA Wen-juan
National Ocean Technology Center (NOTC), Tianjin 300112, China
Abstract:
This paper analyzes and optimizes the structure of the seven-electrode conductivity cell to improve the measurement performance of the seven-electrode conductivity sensor. Based on the measurement principle and thermal inertia theory of the electrode conductivity sensor, the factors affecting the measurement performance of the sensor and the influence of the shell shape on the measurement results are analyzed. The performance of the structure before and after optimization is verified by finite element analysis. Results show that the increment of the maximum velocity in the conductivity cell is increased by 43.66%, and the sensitivity is increased 3.56 times compared to that before the structure optimization. This shows better sensor measurement performance.
Key words:conductivity sensorseven-electrodefinite element analysisoptimization design





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