期刊
MEASUREMENT
卷 199, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.measurement.2022.111498
关键词
Pipe pressure detection; Non-intrusive structure; Ditrigon strain beam; Fiber Bragg grating; High-sensitivity structure
资金
- Taishan Scholars Program of Shandong Province [tsqn201909067]
- Shandong Province Natural Science Foundation [ZR2020QE300]
- Fundamental Research Funds for the Central Universities [20CX06012A]
- Ministry of Industry and Information Technology Research on the key technology of treatment process for high-flow offshore natural gas [CJ09N20]
- Opening Fund of National Engineering Laboratory of Offshore Geophysical and Exploration Equipment [20CX02318A]
- Fundamental Research Funds for the Central Universities
This study proposes a non-intrusive structure with high sensitivity based on fiber Bragg grating sensing for pipeline pressure detection. Experimental results show that the structure has the ability to amplify strain on the pipeline wall, and it also has advantages of convenient installation and simple structure.
Pipeline is one of the main transportation ways with increasingly wide applications in various fields. Generally, the pipelines are operated under high pressure, leakage accidents are extremely dangerous and it is necessary to ensure the safety of pipelines. In this study, a non-intrusive structure with high-sensitivity based on fiber Bragg grating (FBG) sensing is proposed for the detection of pipeline pressure. The core of the structure is a ditrigon strain beam that can transmit the strain on pipeline outside wall to the designed strain beam with an amplification function. Further, theoretical analyses for the structural sensitivity are deduced, and necessary structure optimization is implemented. To verify the practical function and effectiveness of the designed structure, laboratory experiments are conducted and the results indicate that the structure can amplify the strain on pipeline wall with an amplification coefficient of 5.44, and has the obvious advantages of convenient installation and simple-structure.
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