| Autor: |
Yu CAO, Peng CHEN, Jiangong YANG, Deqiang WANG, Yong BAI |
| Jazyk: |
English<br />Chinese |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Zhongguo Jianchuan Yanjiu, Vol 19, Iss 4, Pp 186-192 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1673-3185 |
| DOI: |
10.19693/j.issn.1673-3185.03616 |
| Popis: |
ObjectiveThis study aims to explore the structural strength deterioration mechanism of pipelines with corrosion defects in hydrogen-blended environments.MethodsBased on the experimental data, an analysis is made of the load bearing performance of X52 steel under different levels of hydrogen blending , and the structural strength failure mechanism of an X52 hydrogen-blended natural gas pipeline under different corrosion defects is described using the nonlinear finite element method. ResultsWhen the hydrogen blend level increases to 50.0%, under a combined load, the pipeline reaches minimum displacement failure at 2.58 mm, and the structural toughness deteriorates to a greater degree; at a hydrogen blend level of 25.0%, the defect depth is greater and the degree of structural failure more serious; comparing square and circular defects, the maximum stress of the square defects is higher than that of the circular defects. ConclusionsThe material property-based defective pipeline model can realize the assessment of the structural bearing capacity deterioration of natural gas pipelines under different hydrogen-blending conditions, providing engineering suggestions for the design and health monitoring of new energy pipelines. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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