计量学报2025，Vol.46Issue(11)：1606-1611,6.DOI:10.3969/j.issn.1000-1158.2025.11.08
浓密膏体管道流量测量滑移层误差分析及处理
Error Analysis and Reduction of Slip Layer Error in Thick Paste Pipeline Flow Measurement
摘要
Abstract
Through analyzing the measurement principle and formula of the thick paste pipeline flow measurement apparatus(simplified as measurement apparatus),the slip layer error is the main source of system error.To evaluate and enhance the accuracy of the measurement apparatus,the error research is conducted using a variety of mathematical tools,including limit concepts and Bingham fluid laminar velocity profile approximation,and an error correction method is proposed by experimental verification.The results show that the corrected relative error of the measurement apparatus can be controlled within±6%.This approaches the lowest industrial instrument precision grade of 5.0(±5%).For coal slurry mass concentration above 63%,the measurement accuracy can reach grade 4.0.Consequently,a measurement strategy is recommended:the specified measurement apparatus should be employed for mass concentration above 63%,while an electromagnetic flowmeter should be used for lower concentrations,which can ensure that the measurement accuracy of thick paste flow across the full range of concentrations meets national standards.关键词
流量计量/煤泥管道输送/滑移层误差/浓密膏体/误差分析Key words
flow measurement/coal slurry pipeline transportation/slip layer error/thick paste/error analysis分类
通用工业技术引用本文复制引用
ZHANG Shuangyu..浓密膏体管道流量测量滑移层误差分析及处理[J].计量学报,2025,46(11):1606-1611,6.基金项目
国家自然科学基金(51075389,52104399) （51075389,52104399）
