温变黏性液体黏度对涡轮流量计计量的影响及算法修正  

Impact of Viscosity of Temperature-dependent Viscous Fluid on Turbine Flowmeter Measurement and Algorithm Adjustment

作　　者：王永强[1] 秦勇 WANG Yongqiang;QIN Yong(School of Environment and Resources,Southwest University of Science and Technology,Mianyang Sichuan 621010,China)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《安全》2024年第12期23-28,共6页Safety & Security

摘　　要：为探究温变黏性液体黏度对涡轮计量的影响机制,采用流体流量测量实验与Fluent仿真计算相结合的方法进行研究,并对该问题提出解决方法。研究表明:随着流体流量的增加,仪表系数逐渐趋向稳定,黏度对涡轮流量计计量的影响减弱;流体黏度与能量损失呈现近似正相关线性关系;双指数衰减模型(ExpDec2)能够很好地对涡轮流量计仪表系数进行拟合,其拟合优度(R^(2))能达到0.99134,并利用他人数据对该模型进行验证,证明该模型具有普遍性。得到的拟合曲线可对仪表系数进行动态修正,为智能测量安全提供保障。In order to explore the influencing system on the turbine flowmeter measurement by the viscosity of temperature-dependent viscous fluids,the flow measurement experiment was combined with the fluent simulation calculation to study and propose the solution.The results show that the instrument coefficient tends to stabilize and the influence on the turbine flowmeter measurement by the viscosity decreases with the flow increases;that the fluid viscosity and the energy loss demonstrate an approximate positive correlation;that the ExpDec2 mathematical model can effectively fit the instrument coefficient of turbine flowmeters with an R^(2)value reaching 0.99134;and that the model is verified by other data confirming its universality.The obtained fitted curve can be used to adjust dynamically the instrument coefficient to provide a guarantee for the intelligent measurement safety.

关 键 词：测量安全 涡轮流量计 六自由度(6DOF) 运动黏度 雷诺数 

分 类 号：X937[环境科学与工程—安全科学]