永磁钠流量计干标定方法研究与验证  

Research and Verification of Dry Calibration Method of Permanent Magnetic Sodium Flowmeter

作　　者：吴宏岩[1] 金佳佳[1] 杨建伟[1] Wu Hongyan;Jin Jiajia;Yang Jianwei(China Institute of Atomic Energy,Beijing 102413)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《中国仪器仪表》2025年第1期52-56,共5页China Instrumentation

摘　　要：随着钠冷快堆的发展,永磁钠流量计被大量应用于反应堆工艺回路流量测量。为了保证能够达到测量精度要求,流量计出厂前绝大多数都需要经过实流标定,这一工作成本高且费时。针对永磁钠流量计,本文提出基于测磁法的流量计干标定方法,即用于工程应用的各台流量计无须经过实流标定,测量精度同样可以满足测量需求。本文以DN80永磁流量计为例,开展了测磁法干标定测量精度验证试验。试验结果表明,干标后的流量计测量精度优于2%FS,满足工程流量测量要求。With the rapid development of sodium cooled fast breeder reactor,permanent magnet sodium flowmeters have been widely used in flow measurement in reactor process loop.In order to meet the measurement accuracy requirements,flowmeter needs to go through real flow calibration,which is costly and time-consuming.In this paper,a dry calibration method based on magnetic measurement is proposed for permanent magnetic sodium flowmeter,that is,flowmeter does not need to go through real flow calibration,and the measurement accuracy can meet the requirement of engineering.Taking DN80 flowmeter as an example,the accuracy verification of dry calibration was carried out.The test results show that the measurement accuracy of the flowmeter after dry calibration is less than 2%FS,which can meet the requirement of fast breeder reactor.

关 键 词：永磁钠流量计 干标定 磁场 

分 类 号：TH814[机械工程—仪器科学与技术]