化工学报2025，Vol.76Issue(2)：596-611,16.DOI:10.11949/0438-1157.20241102
入口压力及系统压差对气体输送系统流量的影响
Effect of inlet pressure and differential pressure on flow rate of gas conveying system
摘要
Abstract
During the experiment using the gas delivery system,the actual flow rate often deviates,and the deviation value is different under different inlet pressures and system pressure differences,which will affect the accuracy of the experimental results in certain cases.The experimental results can be corrected by error prediction.This research uses a nitrogen conveying system to analyze and predict errors by varying the inlet pressure,differential pressure,and flow rate value and range and measuring the actual flow rate.It is shown that the system differential pressure has less effect on the flow control.And the increase of inlet pressure needs to be used with the back pressure valve thus improving the accuracy of the system,so the inlet pressure can be increased to make the deviation value smaller.Meanwhile,a universal prediction model of error value and flow rate value is proposed based on the theoretical derivation and experimental results,which can accurately predict the actual flow rate,and provides a new idea for the error analysis and precise control of a gas conveying system.关键词
气体/气力输送/测量/质量流量计/误差分析/流量控制Key words
gas/pneumatic conveying/measurement/mass flow meters/error analysis/flow control分类
化学化工引用本文复制引用
汪涵,朱春英,马友光,付涛涛..入口压力及系统压差对气体输送系统流量的影响[J].化工学报,2025,76(2):596-611,16.基金项目
化学工程联合国家重点实验室探索性课题项目(SKL-ChE-22T07) （SKL-ChE-22T07）
