插入式电磁流量计信号作用范围的研究

运用计算流体力学(CFD)方法,对插入式电磁流量计插入大口径管道的探头进行三维仿真实验,研究两电极在管道中采集到的有效信号的范围。提出了用于表征真实信号作用的等效信号范围的概念和确定方法,得出了插入式电磁流量计采集到的等效信号范围是由自身硬件结构决定而不随来流速度变化的结论,为通过CFD定量分析插入式电磁流量计管内流场变化奠定了基础。

Research on the Signal Scope of Insertion Electromagnetic Flowmeter

The effective signal range of two electrodes was studied on inserting the probe into large diameter pipe of insertion electromagnetic flowmeter by using Computational Fluid Dynamics(CFD) to make three-dimensional simulations. The concept and determination method of equivalent signal scope for the characterization of real signal effect have be proposed. And it can be concluded that equivalent signal range collected by insertion electromagnetic flowmeter is only related to the it`s hardware structure, and do nothing with the flow velocity. This will make theSbasis for the quantitativeSanalysisSabut theSchanges of the flow field of insertion electromagnetic flowmeter in the tube by CFD.