双体均速管流量计的创新优化设计  

Innovation and optimized design of tow-profile averaging pitot tube

作　　者：杨笑梅[1] 张亚军 朱莹[1] 沈新荣[1] 

机构地区：[1]浙江大学流体工程研究所,杭州310027 [2]西安陕鼓动力股份有限公司自动化中心,西安710075

出　　处：《工业仪表与自动化装置》2015年第3期40-43,共4页Industrial Instrumentation & Automation

摘　　要：基于流动控制原理,将文丘里效应应用到均速管流量计中,建立了几种双体均速管模型。通过数值分析不同模型的流量系数及其引起的永久压损随速度的变化规律,并与威力巴原型进行比较,从中选取最优模型。In this paper,on the basis of the flow control theory, several tow-profile averaging pitot tube models by the Venturi effect applied to the averaging pitot tube were proposed. The variations of the flow coefficient and the permanent pressure loss with flow verocity on different models were numerically analyzed and the best model was obtained compared to the original Veris bar.

关 键 词：均速管流量计 流量系数 永久压力损失 

分 类 号：TH814[机械工程—仪器科学与技术]