科里奥利质量流量计拾振器的优化分析  

Optimization Analysis of Coriolis Mass Flowmeter Pickups

作　　者：李红民[1] 刘瑞玉 马亚伟 汪明[1] LI Hongmin;LIU Ruiyu;MA Yawei;WANG Ming(School of Information and Electrical Engineering,Shandong Jianzhu University,Jinan 250101,China)

机构地区：[1]山东建筑大学信息与电气工程学院,济南250101

出　　处：《宇航计测技术》2024年第2期17-24,共8页Journal of Astronautic Metrology and Measurement

基　　金：国家自然科学基金项目(61273326)。

摘　　要：针对拾振器质量对仪表产生的影响进行有限元仿真,结果表明,拾振器质量增加会导致测量管谐振频率降低,且拾振器质量分布不均会导致测量管谐振频率发生变化。为了减小拾振器质量对测量管的影响,设计了由环氧覆铜板组成的电容传感器作为拾振器,实现轻质量附加、非接触及宽频响振动感测,并进行了有限元分析与试验。结果表明,轻量级电容拾振器可提高测量管的谐振频率,增强抑制零点漂移的能力,可以更快、更稳定地响应流体下限质量流量的变化,为科氏质量流量计的生产研究提供一种可行的技术方案。Finite element simulation was conducted to investigate the influence of the mass of the pickup on the instrument.The results indicate that an increase in the mass of the pickup will lead to a decrease in the resonance frequency of the measuring tube,and uneven mass distribution of the pickup will cause changes in the resonance frequency of the measuring tube.In order to reduce the impact of the pickup mass on the measuring tube,a capacitive sensor composed of epoxy-covered copper plates was designed as the pickup to achieve lightweight attachment,non-contact,and wide-band vibration sensing,and finite element analysis and experiments were conducted.The results show that lightweight capacitive pickups can increase the resonance frequency of the measuring tube,enhance the ability to suppress zero drift,and can respond to changes in the lower mass flow rate of the fluid more quickly and stably,providing a feasible technical solution for the production and research of Coriolis mass flowmeters.

关 键 词：有限元 谐振频率 零点漂移 

分 类 号：V441[航空宇航科学与技术—飞行器设计] TH814[机械工程—仪器科学与技术]