壁面污垢对临界流文丘里喷嘴流出系数的影响  

Effect of wall fouling on the outflow coefficient of critical flow Venturi nozzle

作　　者：蔡浩晖 CAI Haohui(PipeChina West Pipeline Company Ltd.,Urumqi 830001,China;Xinjiang Key Laboratory of Multi-Medium Pipeline Safety Transportation,Urumqi 830001,China)

机构地区：[1]国家管网集团西部管道公司,新疆乌鲁木齐830001 [2]新疆多介质管道安全输送重点实验室,新疆乌鲁木齐830001

出　　处：《工业计量》2025年第2期1-6,共6页Industrial Metrology

摘　　要：针对天然气检定站的喷嘴流量标准装置因壁面结垢导致测量值偏大的问题,从理论推导和CFD仿真两个方面对壁面粗糙度对喷嘴流出系数的影响规律进行了研究,影响规律与实际相符,并提出了保证喷嘴流量标准装置准确测量的数据监测和喷嘴清洗方案,对拥有喷嘴流量标准装置的天然气检定站有一定的指导作用。Aiming at the problem that the measurement value of the nozzle flow standard device of the natural gas verification station is too large due to the wall fouling,the influence law of the wall roughness on the nozzle outflow coefficient is studied from the two aspects of theoretical deduction and CFD simulation.The influence law is consistent with reality,and the data monitoring and nozzle cleaning scheme to ensure the accurate measurement of the nozzle flow standard device is proposed,which has a certain guiding effect on the natural gas verification station with the nozzle flow standard device.

关 键 词：喷嘴 流出系数 边界层 CFD仿真 

分 类 号：TE863[石油与天然气工程—油气储运工程]