光纤应变技术在水轮机尾水门物理场模型构建中的应用  

Application of optical fiber strain technology in the building of physical field model of hydraulic turbine tailrace gate

作　　者：罗金文 唐晓丹 李初辉[1] 刘绍勇[1] 黄天雄[1] 胡庆雄[1] LUO Jin-wen;TANG Xiao-dan;LI Chu-hui;LIU Shao-yong;HUANG Tian-xiong;HU Qing-xiong(Wudongde Hydropower Station of China Changjiang Electric Power Co.,Ltd.,Kunming 650000,China)

机构地区：[1]中国长江电力股份有限公司乌东德水电站,云南昆明650000

出　　处：《水电站机电技术》2023年第10期56-58,123,共4页Mechanical & Electrical Technique of Hydropower Station

基　　金：中国长江电力股份有限公司2021年工业互联网创新发展工程——工业数字孪生管理系统项目。

摘　　要：水轮机尾水进人门是水电机组重要的过流承压部件,其可靠性关系到整个水电站的安全运行,是现场运维重点关注对象,也是未来数字孪生机组的重要核心部件之一。本文基于光纤光栅应变传感技术,以某巨型混流式水轮机尾水进人门为研究对象,在其结构上布置了光纤应变测点,构建了应变在线监测系统,为行业内首次实施。本研究应变在线监测数据与有限元仿真计算进行了比对分析,为尾水进人门物理场模型构建提供了技术验证。The tailrace gate of a hydraulic turbine is an important water-flowing and pressure-bearing component of a hydroelectric unit.It is not only the focus of field operation and maintenance as its reliability bears on the safe operation of the whole hydropower plant,but also one of the important core components of future digital twin units.This paper takes the tailrace gate of a giant Francis turbine as the object of study and sets optical fiber strain measuring points on the tailrace gate based on the fiber grating strain sensor technology to build an on-line strain monitoring system,which is the first case in the industry.The study compared and analyzed the on-line strain monitoring data and finite element simulating calculation,technically verifying the building of a physical field model of tailrace gate.

关 键 词：尾水进人门 光纤光栅 应变监测 物理场 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]