|本期目录/Table of Contents|

[1]高 颂,金 鑫,杜新武,等.电磁流量计电极粗糙度对测量结果的影响研究[J].工业仪表与自动化装置,2020,(06):117-120.[doi:1000-0682(2020)06-0000-00]
　GAO Song,JIN Xin,DU Xinwu,et al.Influence of electrode roughness of electromagnetic flowmeter on measurement[J].Industrial Instrumentation & Automation,2020,(06):117-120.[doi:1000-0682(2020)06-0000-00]
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电磁流量计电极粗糙度对测量结果的影响研究

《工业仪表与自动化装置》[ISSN:1000-0682/CN:61-1121/TH]

卷:
期数:
2020年06期
页码:
117-120
栏目:
出版日期:
2020-12-15

文章信息/Info

Title:
Influence of electrode roughness of electromagnetic flowmeter on measurement
作者:
高 颂; 金 鑫; 杜新武; 等
1.河南科技大学 农业装备工程学院，河南 洛阳 471003;
2.上海健康医学院 医疗器械学院，上海 201318
Author(s):
GAO Song1;  JIN Xin1;  DU Xinwu1;  LIU Qiaohong 2
1. College of Agricultural Equipment Engineering, Henan University of Science and Technology,Henan Luoyang 471023, China；
2.School of Medical Instruments, Shanghai University of Medicine and Health Sciences, Shanghai 201318, China
关键词:
电磁流量计; 粗糙度; 雷诺数; CFD方法
Keywords:
electromagnetic flowmeter;  Roughness;  Reynolds number;  CFD method
分类号:
-
DOI:
1000-0682(2020)06-0000-00
文献标志码:
B
摘要:
用于高雷诺数流体测量的电磁流量计，其传感器测量电极的表面粗糙度将会对电极附近的流场产生影响。根据电磁流量传感器的权重函数理论可知，电极附近流场的变化将极大的影响电磁流量计的测量信号，导致测量结果产生误差。该文提出了一种使电磁流量传感器测量电极的表面粗糙度不影响流场的方法，首先应用CFD方法分析了测量电极粗糙度对流场的影响，然后用权重函数理论分析了测量误差产生的原因，提出了对电磁流量传感器的结构改造方案，最后通过流场仿真验证了改造方案的可行性。结果表明，该文提出的方法可以很好的解决测量电极表面粗糙度造成的测量误差问题。
Abstract:
In the electromagnetic flowmeter used for measuring high Reynolds number fluid, the surface roughness of the electrode measured by the sensor will have an impact on the flow field near the electrode. According to the weight function theory of the electromagnetic flow sensor, the change of the flow field near the electrode will greatly affect the measurement signal of the electromagnetic flowmeter, and lead to errors in the measurement results. In this paper, a method is proposed to make the surface roughness of the measuring electrode of electromagnetic flow sensor not affect the flow field. Firstly, the influence of the measuring electrode roughness on the flow field is analyzed by CFD method, and then the reason of measurement error is analyzed by weight function theory. Finally, the structural modification scheme of electromagnetic flow sensor is proposed. Finally, the feasibility of the modification scheme is verified by flow field simulation. The results show that the method proposed in this paper can solve the problem of measurement error caused by measuring electrode surface roughness.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2020-07-10
基金项目：
河南省科技攻关项目(192102110204)；
河南省教育厅自然科学研究项目(18A413006)
作者简介：
高颂（1982），男，博士，讲师，主要研究方向为计算流体力学、新型传感器技术、流量传感器与仪表等。
更新日期/Last Update: 1900-01-01