超声波流量计精度影响分析及匹配层优化  

Ultrasonic Flowmeter Accuracy Influence Analysis and Matching Layer Optimization

作　　者：王涛[1] 杨世凤[1] 褚雨虹 任昊远 邵欣[2] 韩思奇[2] WANG Tao;YANG Shifeng;CHU Yuhong;REN Haoyuan;SHAO Xin;HAN Siqi(Tianjin University of Science and Technology,Tianjin 300202,China;Tianjin Sino-German University of Applied Sciences,Tianjin 300350,China)

机构地区：[1]天津科技大学,天津300202 [2]天津中德应用技术大学,天津300350

出　　处：《电声技术》2023年第3期107-109,114,共4页Audio Engineering

基　　金：天津市教委科研计划项目(2020KJ087);山东省科技型中小企业创新能力提升工程项目(2022TSGC2331)。

摘　　要：针对超声波测量原理展开论述,通过对信号、时间、流场以及匹配层的分析,提出了影响流量计测试不确定性的各种因素,并重点对匹配层的性能进行分析。基于匹配层的制备和性能测试,分析了若干种配比不同的换能器对流量计测试精度的影响。声阻抗是超声波流量计的重要参数,根据该参数的变化对匹配层的声学特性进行分析,并对其频率和波形进行研究。This paper discusses the principle of ultrasonic measurement,and through the analysis of signal,time,flow field and matching layer,puts forward various factors affecting the measurement uncertainty of flowmeter,and emphatically analyzes the performance of matching layer.Based on the preparation and performance test of matching layer,the influence of several transducers with different ratios on the test accuracy of flowmeter is analyzed.Acoustic impedance is an important parameter of ultrasonic flowmeter.According to the change of this parameter,the acoustic characteristics of matching layer are analyzed,and its frequency and waveform are studied.

关 键 词：超声波流量计 匹配层 声学特性 

分 类 号：TB552[理学—物理]