上游弯管对时差法超声波流量计测量准确性影响分析  

Analysis of Influence of Upstream Elbow on Measurement Accuracy of Ultrasonic Flowmeter Using Time Difference Method

作　　者：王杰[1] 孙潾 王宏伟[1] 李高峰 陈凯[1] Wang Jie;Sun Lin;Wang Hongwei;Li Gaofeng;Chen Kai(Technical Testing Center,Sinopec Shengli Oilfield Company,Dongying,Shandong 257000,China;Testing and Evaluation Research Co.,Ltd.,Sinopec Shengli Oilfield Company,Dongying,Shandong 257000,China)

机构地区：[1]中国石化胜利油田分公司技术检测中心,山东东营257000 [2]中国石化胜利油田分公司检测评价研究有限公司,山东东营257000

出　　处：《石油工业技术监督》2021年第9期28-32,共5页Technology Supervision in Petroleum Industry

摘　　要：针对时差法超声波流量计上游存在弯管计量误差大的问题,通过数值仿真模拟分析了其各自计量误差的变化情况,并建立了相应的修正模型。通过现场试验证明,经过相应的数学模型修正后,超声流量计的测量示值误差基本能够控制在±1.0%以内,大大提高了超声波流量计在上游存在弯管的情况下测量的准确性。There is a elbow in the upstream of the time difference ultrasonic flowmeter,so the measurement error of it is large.Therefore,the change of measurement error is analyzed by numerical simulation,and the corresponding correction model is established.The field test shows that after the mathematical model is modified,the indication error of ultrasonic flowmeter can be controlled within±1.0%,which greatly improves the measurement accuracy of ultrasonic flowmeter when there is elbow in the upstream.

关 键 词：时差法 超声波流量计 弯管 仿真 修正模型 

分 类 号：TH814.92[机械工程—仪器科学与技术]