非牛顿粘性流体对浮子流量传感器测量影响的试验研究  

Experimental Investigation on Rotameter for Measuring Non-Newtonian Viscous Fluid

作　　者：苏锋[1] 张涛[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072

出　　处：《化工自动化及仪表》2006年第1期73-77,共5页Control and Instruments in Chemical Industry

基　　金：天津市自然科学基金资助项目(023603511)

摘　　要：为研究非牛顿粘性流体时浮子流量传感器流量测量的影响，采用五种不同形状及材质浮子所分别构成的浮子流量传感器对动力粘度从1～2692MPa·s范围的高粘性非牛顿流体水溶液进行了试验，通过对不同浮子流量传感器受粘性影响试验的分析，获得了非牛顿粘性流体对浮子流量传感器测量影响的规律，分析中给出描述浮子流量传感器受粘度影响的量化指标——粘度影响率。在此基础上研究了减小粘性流体对浮子流量传感器影响的浮子结构及其减粘机理，试验中浮子流量传感器在1～2692MPa·s的粘性范围内的最小粘度影响率为25．8％，在1～495MPa·s的粘性范围内，最小粘度影响率可控制在2．9％。An experiment is conducted to understand the effect of non-Newtonian viscous fluid on the flow measurement of rotameter. In the experiment, the rotameters, which are composed with different floating elements in shape and material in measuring tube, are employed to calibrate the non-Newtonian viscous fluid with viscosity from 1 to 2 692 MPa·s. Through the analysis of the impact of non-Newtonian viscous fluid on different rotameter,the general rule is obtained for rotameter in measuring the non-Newtonian viscous fluid. Viscosity influence ratio is defined in the process of analyzing the viscous effect of fluid on rotameter.. The method of optimizing the float＇s structure for decrea- sing the impact of viscous flow is discussed base on the rule of the experiment. The minimal viscosity influence ratio of rotameter is under the value of 25.8% at measuring the viscous fluid from 1 to 2 692 MPa · s, and the minimal value of viscosity influence ratio is under 2.9% at measuring the viscous fluid from 1 to 495 MPa · s.

关 键 词：浮子流量传感器 粘性 粘度影响率 非牛顿流体 浮子 

分 类 号：TH814[机械工程—仪器科学与技术]