赵冠熹, 何太碧, 李明, 韩锐, 汪霞. 玄武岩纤维气瓶非测地线缠绕强度模拟与爆破试验[J]. 油气储运, 2023, 42(5): 577-585. DOI: 10.6047/j.issn.1000-8241.2023.05.012
引用本文: 赵冠熹, 何太碧, 李明, 韩锐, 汪霞. 玄武岩纤维气瓶非测地线缠绕强度模拟与爆破试验[J]. 油气储运, 2023, 42(5): 577-585. DOI: 10.6047/j.issn.1000-8241.2023.05.012
ZHAO Guanxi, HE Taibi, LI Ming, HAN Rui, WANG Xia. Strength simulation and blasting test of basalt fiber cylinder with non-geodesic winding[J]. Oil & Gas Storage and Transportation, 2023, 42(5): 577-585. DOI: 10.6047/j.issn.1000-8241.2023.05.012
Citation: ZHAO Guanxi, HE Taibi, LI Ming, HAN Rui, WANG Xia. Strength simulation and blasting test of basalt fiber cylinder with non-geodesic winding[J]. Oil & Gas Storage and Transportation, 2023, 42(5): 577-585. DOI: 10.6047/j.issn.1000-8241.2023.05.012

玄武岩纤维气瓶非测地线缠绕强度模拟与爆破试验

Strength simulation and blasting test of basalt fiber cylinder with non-geodesic winding

  • 摘要: 纤维缠绕增强耐压容器在封头处易出现应力集中和纤维堆积,是其整体破坏失效的薄弱环节,强化气瓶承压时的封头安全性能尤为重要。选择玄武岩纤维增强复合材料气瓶为研究对象,计算得出偏离测地线0°~9°范围缠绕时,可实现稳定的非测地线缠绕。建立不同缠绕角度的气瓶有限元分析模型,分析其对气瓶封头应变分布的影响。结果表明:随着缠绕偏离角的增大,在35 MPa工作压力下,封头最大应变和应变分布范围均在23°缠绕角时最小;在119 MPa最小爆破压力下,封头处的最大应变在23°缠绕角出现拐点;沿封头内外壁路径的应力分布表明,非测地线缠绕可明显降低整个封头部位的应力。通过水压爆破试验进一步验证了数值模拟结果,研究结果可为优化压缩天然气和氢气储运装备的安全性提供参考。

     

    Abstract: The stress concentration and fiber accumulation is easy to occur at the head of the fiber-wound reinforced pressure vessel, which is the weak link for its overall damage failure. Thus, it is particularly important to strengthen the safety performance of the head when the gas cylinder is under pressure. Herein, research was conducted based on the basalt fiber-reinforced composite cylinder. Meanwhile, it was calculated that the stable non-geodesic winding could be realized in case the winding deviated 0-9° from the geodesic line. Besides, the finite element analysis model of the gas cylinder with different winding angles was established to analyze its influence on the strain distribution of the gas cylinder head. The results show that with the increase of the winding deviation angle, the maximum strain and the strain distribution range of the head are minimized at the winding angle of 23° at 35 MPa working pressure. Under the minimum blasting pressure of 119 MPa, an inflection point of the maximum strain at the head appears at the winding angle of 23°. The stress distribution along the inner and outer wall of the head shows that the non-geodesic winding can obviously reduce the stress of the whole head. Furthermore, the numerical simulation results are verified by a hydraulic blasting test. Generally, the research results could provide a reference for optimizing the safety of compressed natural gas and hydrogen storage and transportation equipment.

     

/

返回文章
返回