基于FBG传感的非侵入式管内流体测温方法  

Non-intrusive Fluid Temperature Measurement Method in Pipe Based on FBG Sensor

作　　者：李平 刘明尧[1] 杨雪丽 LI Ping;LIU Mingyao;YANG Xueli(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学机电工程学院,湖北武汉430000

出　　处：《数字制造科学》2024年第3期222-226,共5页

摘　　要：针对传统侵入式管内流体温度测量结构的破坏性和干扰性,以光纤光栅(FBG)为感温元件设计了一种毛细管式温度传感器及其在管道上的非侵入安装结构。该非侵入式测温方法以建立管内流体温度与管壁温度和外界环境温度的对应关系为基础,通过测量管壁温度和环境温度间接得到流体温度。该非侵入式测温方法在不破坏管道的基础上实现了流体温度的测量,为管内流体温度的监测提供了新的思路。This paper presents a non-intrusive capillary temperature sensor design using fiber bragg gratings(FBG)as the temperature sensing element,addressing the destructive and interference issues present in traditional invasive temperature measurement methods within pipelines.The non-intrusive temperature measurement method establishes a relationship between the the fluid temperature fluid inside the pipeline,the pipeline wall temperature,and the external environment temperature.By measuring the temperature of the pipeline wall and the environment,the fluid temperature is indirectly calculated.This method allows fluid temperature measurement without damaging the pipeline,offering a new approach for monitoring the temperature of fluids in pipelines.

关 键 词：光纤光栅(FBG) 非侵入式测温 毛细管式温度传感器 管壁温度 流体温度 

分 类 号：TB942[一般工业技术—计量学] TP212[机械工程—测试计量技术及仪器]