新型非插入式流量测量原理的研究

发布时间：2018-03-28 14:24

  本文选题：非插入式测量　切入点：质量流量　出处：《石油与天然气化工》2017年02期

【摘要】：非插入式流量检测方法在不破坏系统工作状态的情况下,可对化工生产进行流量测量以及化工管道系统故障诊断、故障定位。该非插入式测量方法利用变形法原理,采用应变测量技术测量重力场下流体对管道作用产生的应变,推导出应变率与质量流量的关系;结合弹性力学和材料力学推导出管壁应变差与质量流量存在典型的线性关系;然后运用Workbench建立仿真模型并通过单向流固耦合的仿真方法,对理论计算进行验证;最后在管路综合特性实验台布置应变片连接到uT7110Y静态应变仪,记录相应数据,根据数据拟合结果说明应变差与质量流量具有很好的线性关系,能够利用该特性进行非插入式质量流量的测量。
[Abstract]:The non-plugged flow detection method can be used to measure the flow of chemical industry without destroying the working state of the system, and to diagnose and locate the fault of chemical pipeline system. The non-inserted flow detection method utilizes the principle of deformation method. Strain measurement technique is used to measure the strain produced by fluid acting on pipeline under gravity field, and the relationship between strain rate and mass flow rate is deduced, and a typical linear relationship between tube wall strain difference and mass flow rate is deduced by combining elastic mechanics and material mechanics. Then the simulation model is established by Workbench and the theoretical calculation is verified by unidirectional fluid-solid coupling simulation method. Finally, strain gauges are connected to the uT7110Y static strain gauge on the pipe comprehensive characteristic test bench, and the corresponding data are recorded. The results of data fitting show that the strain difference has a good linear relationship with the mass flow rate, and it can be used to measure the non-inserted mass flow rate.
【作者单位】： 中北大学机械与动力工程学院;中北大学计算机与控制工程学院;
【分类号】：TQ056.15
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本文编号：1676699