微型机与应用2017，Vol.36Issue(10)：92-93,95,3.DOI:10.19358/j.issn.1674-7720.2017.10.026
提高超声波气体流量计精度的整流装置研究
Research on rectifying device for improving accuracy of ultrasonic flow meter
摘要
Abstract
When the averaging pitot tube flow sensor is installed at the downstream of elbow, the flow regime is not fully-developed turbulence, which will increase the error of flow measurement.In order to improve the accuracy of flow measurement, a method to reduce the error by installing a flow conditioner at downstream of the elbow for reforming the symmetry of flow velocity profile was put forward.Based on the traditional flow conditioner, the improved flow conditioner was designed by the method of theoretical calculation and analysis combined with real flow experiment.Verified by the experiment, after installing the improved flow conditioner, the linearity error of the ultrasonic flow meter was reduced to 0.2%.关键词
超声波技术/气体流量计/整流装置/流量测量/测量误差Key words
ultrasonic technique/gas flow meter/rectifying device/flow measurement/measurement error分类
机械制造引用本文复制引用
汪宋良..提高超声波气体流量计精度的整流装置研究[J].微型机与应用,2017,36(10):92-93,95,3.基金项目
校内科研项目(ZZX16054) （ZZX16054）
