基于光纤布拉格光栅的涡街流量传感技术研究  

Research on Vortex Flow Sensing Technology Based on Fiber Bragg Grating

作　　者：贾振安[1,2,3,4] 王恒超 白燕 樊伟[1,2,3,4] JIA Zhen-an;WANG Heng-chao;BAI Yan;FAN Wei(School of Science,Xi′an Shiyou University,Xi′an 710065,China;Shaanxi Engineering Research Center of Oil and Gas Resource Optical Fiber Detection,Xi′an 710065,China;Shaanxi Key Laboratory of Measurement and Control Technology for Oil and Gas Wells,Xi′an 710065,China;Key Laboratory of CNPC-Research Laboratory for Optical Fiber Dynamic Detection of Oil Reservoirs,Xi′an 710065,China)

机构地区：[1]西安石油大学理学院,陕西西安710065 [2]陕西省油气资源光纤探测工程技术研究中心,陕西西安710065 [3]陕西省油气井测控技术重点实验室,陕西西安710065 [4]CNPC重点实验室——油藏光纤动态检测研究室,陕西西安710065

出　　处：《红外》2023年第9期28-37,共10页Infrared

基　　金：陕西省教育厅重点实验室科研计划项目(18JS093)。

摘　　要：流量是科学研究及工业生产中的一项重要参数。在众多流量测量仪表中,涡街流量计是一种常用类型。由于光纤布拉格光栅(Fiber Bragg Grating,FBG)具有灵敏度高、体积小和抗电磁干扰强等特点,基于FBG的涡街流量传感技术具有重要研究意义。概述了FBG涡街流量传感机理,分析了涡街发生体下游的流体状态与升力变化。从已有研究成果入手,分析提炼了基本型涡街发生体作用下的旋涡属性、涡街信号处理、消除管道振动和小流量测量四个关键性问题。最后,总结并展望了该项技术利用光学方法抑制干扰信号、小口径管道涡街流量测量和FBG传感封装与增敏三个方面,还提出了未来可能发展的研究方向,以期发展新型涡街流量计。Flow is an important parameter in scientific research and industrial production.Vortex flowmeter is a common type in many flow measuring instruments.As fiber Bragg grating(FBG)has the characteristics of high sensitivity,small size and strong electromagnetic interference resistance,vortex flow sensing technology based on FBG is of important research significance.The sensing mechanism of FBG vortex flow is summarized,and the changes of fluid state and lift force downstream of the vortex generator are analyzed.In addition,four key problems(the vortex properties,vortex signal processing,pipeline vibration elimination and small flow measurement)under the action of the basic vortex generator are analyzed and extracted based on the research achievement.Finally,the optical suppression of interference signal,vortex flow measurement of small diameter pipeline,FBG sensing package and sensitization are summarized and looked forward to.The possible research direction in the future is also put forward,in order to develop a new vortex flowmeter.

关 键 词：光纤布拉格光栅 涡街流量计 涡街发生体 

分 类 号：TN253[电子电信—物理电子学]