摘要
由于服役环境的复杂及流固耦合作用特征,运营中的海管会出现管道穿孔甚至断裂的问题,引发原油泄漏。因此,对海管结构变形进行监测,掌握结构的整体姿态,评价其结构安全性具有重要的工程意义。鉴于当前海管变形监测的光纤传感探头存在的缺陷,文中结合海管几何和物理特征,根据应变传递理论设计了一种适应输油气海管长期连续变形监测的硅橡胶封装光纤光栅传感器,并通过基础拉伸试验和模型试验检测其界面传递变形和应变感知性能,同时结合海管形态重构的算法实现管道结构形态监测。该研究为海管结构特征参数监测、损伤识别和安全状态评定提供了有效的测量器件和算法。
Due to the complexity of the service environment and the fluid-solid coupling action characteristics,pipelines may suffer from perforation and fracture in operation,resulting in oil leakage.Therefore,it is significant to monitor the structural deformation of submarine pipes,obtain the overall shape of the structure,and evaluate the structural safety.To overcome the shortcomings of optical fiber sensor probe in the deformation detection of submarine pipes,a silicone rubber packaged fiber Bragg grating(FBG)sensor suitable for long-term continuous deformation monitoring of oil and gas pipes was designed in this paper.It was based on strain transfer theory of the optical fiber sensors with the geometrical and physical characteristics of submarine pipes considered.The interfacial properties and strain sensing performance of the FBG sensor was checked by basic tensile test and model test.At the same time,combined with the algorithm of submarine pipe shape reconstruction,the pipeline structure shape monitoring was realized.The study provides effective measurement elements and algorithms for the characteristic parameter monitoring,damage identification and safety state assessment of the submarine pipe structures.
作者
王花平
冯思远
景鑫
弓翔舒
李齐明
WANG Hua-ping;FENG Si-yuan;JING Xin;GONG Xiang-shu;LI Qi-ming(School of Civil Engineering and Mechanics,Lanzhou University,Lanzhou 730000,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2021年第8期15-21,68,共8页
Instrument Technique and Sensor
基金
国家自然科学青年基金项目(51908263)
兰州大学双一流建设费(561119201)
中央高校基本科研业务费专项-自由探索-优秀青年教师科研创新项目(lzujbky-2020-56)
省级陇原青年创新创业人才团队项目(2020-0624-RCC-0013)。
关键词
工程化FBG传感器
海管
应变感知性能
曲率测量
形态重构
industrialized FBG sensor
submarine pipe
strain sensing performance
curvature measurement
shape reconstruction
