超声小口径水表工作原理的探讨及结构仿真  

Discussion on Woking Priciples and Sructure Simulation of Ultrasonic Small-Caliber Water Meter

作　　者：金凯 钱军 王梦燕 林斌发 刘宇婷 JIN Kai;QIAN Jun;WANG Mengyan;LIN Binfa;LIU Yuting(Ningbo Water Meter(Group)Co.,Ltd.,Ningbo 315032,China)

机构地区：[1]宁波水表(集团)股份有限公司,浙江宁波315032

出　　处：《仪表技术》2021年第5期66-69,共4页Instrumentation Technology

摘　　要：介绍超声电子水表速差法原理,推导不同使用结构的流速计算公式。通过仿真层流、紊流状态下不同结构等速线的分布情况探讨结构对流场的影响。仿真各使用结构在不同声道偏移层下的K值分布情况,以及在相同声道偏移层条件下,不同结构在不同流量下的K值分布情况。The paper introduces the principle of the speed difference method of the ultrasonic electronic water meter, and deduces the calculation formula of the flow velocity using different structures. The influence of the structure on the flow field is discussed by simulating the distribution of isokinetic lines under laminar and turbulent flow conditions. The simulation uses the K value distribution of the structures under different channel offset layers, as well as the K value distribution of different structures in different flow rates under the same channel offset layer.

关 键 词：超声电子水表 速差法 等速线 K值分布 流场 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]