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[1]胡玮鹏,陈光,齐宝金,等.埋地纯氢/掺氢天然气管道泄漏扩散数值模拟[J].油气储运,2023,42(10):1118-1127,1136.[doi:10.6047/j.issn.1000-8241.2023.10.005]
HU Weipeng,CHEN Guang,QI Baojin,et al.Numerical simulation of leakage and diffusion of buried pure hydrogen/hydrogen-doped natural gas pipeline[J].Oil & Gas Storage and Transportation,2023,42(10):1118-1127,1136.[doi:10.6047/j.issn.1000-8241.2023.10.005]
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HU Weipeng,CHEN Guang,QI Baojin,et al.Numerical simulation of leakage and diffusion of buried pure hydrogen/hydrogen-doped natural gas pipeline[J].Oil & Gas Storage and Transportation,2023,42(10):1118-1127,1136.[doi:10.6047/j.issn.1000-8241.2023.10.005]
埋地纯氢/掺氢天然气管道泄漏扩散数值模拟
《油气储运》[ISSN:1000-8241/CN:13-1093/TE]
卷:
42
期数:
2023年10期
页码:
1118-1127,1136
栏目:
低碳与新能源
出版日期:
2023-10-25
- Title:
- Numerical simulation of leakage and diffusion of buried pure hydrogen/hydrogen-doped natural gas pipeline
- 文章编号:
- 1000-8241（2023）10-1118-10
- Keywords:
- buried pipeline; hydrogen-doped natural gas; leakage diffusion; simulation calculation; influencing factors
- 分类号:
- TE88
- 文献标志码:
- A
- 摘要:
- 为研究纯氢/掺氢天然气在土壤环境中的扩散特性，通过Fluent软件建立了三维埋地纯氢/掺氢天然气管道泄漏模型，分析了泄漏口特征、管道埋深、土壤条件、管道压力、掺氢比等因素对埋地纯氢/掺氢天然气管道泄漏的影响。结果表明：在土壤环境中，氢气泄漏后扩散速度相对较慢，主要聚集在泄漏口附近；泄漏孔径越大、泄漏口长宽比越大，氢气泄漏危险性越大；泄漏口位置主要影响氢气泄漏后的分布，对于大管径输氢管道应经常对管道四周进行氢气浓度监测，以避免发生氢气泄漏事故；管道埋深越浅，氢气泄漏量越大，危险性越大；在孔隙率较大、土壤粒径较大的土壤中氢气泄漏扩散较快，需针对不同土壤条件设计不同的输氢监测方案；在掺氢输送过程中，随着掺氢比的增大，同一监测点处混合气体达到爆炸下限所需时间逐渐变短，氢气泄漏的危险性逐步提高。研究成果可为将来纯氢/掺氢管道的安全平稳运行提供理论参考。（图17，表3，参19）
- Abstract:
- In order to study the diffusion characteristics of pure hydrogen/hydrogen-doped natural gas in the soil environment, a three-dimensional leakage model of the buried pure hydrogen/hydrogen-doped natural gas pipeline was established by Fluent software. On this basis, the effects of the characteristics of the leakage port, buried depth of the pipeline, soil condition, pipeline pressure and hydrogen blending ratio on the leakage of buried pure hydrogen/hydrogen-doped natural gas pipeline were analyzed. The results show that: the leaked hydrogen diffuses at a relatively slow rate in the soil environment but gathers near the leakage port. The larger the leakage aperture, the larger the aspect ratio of the leakage port, and the greater the hydrogen leakage risk. Besides, the location of the leakage port will have a main effect on the distribution of leaked hydrogen. For the large hydrogen pipeline, the hydrogen concentration should be monitored around the pipelines to avoid hydrogen leakage accidents. The shallower the pipeline is buried, the more the leaked hydrogen and the greater the risk. As the hydrogen leaks and diffuses faster in soil with large porosity and large particle size, different hydrogen transportation monitoring schemes should be designed for different soil conditions. In the process of hydrogen-doped natural gas transportation, the time required for the mixed gas at the same monitoring point to reach the lower explosive limit becomes shorter with the increase of the hydrogen blending ratio, which increases the risk of hydrogen leakage gradually. Generally, the research results can provide theoretical reference for the safe and stable operation of pure hydrogen/hydrogen-doped pipelines in the future. (17 Figures, 3 Tables, 19 References)
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备注/Memo
胡玮鹏，男，1998年生，在读硕士生，2021年毕业于西安交通大学电气工程及其自动化专业，现主要从事天然气管道泄漏快速仿真预测技术的研究工作。地址：陕西省西安市长安区思源环北路中国西部科技创新港西安交通大学，710049。电话：15877652271。Email：hu1098324138@stu.xjtu.edu.cn
基金项目：国家重点研发计划“氢能技术”重点专项“中低压纯氢与掺氢燃气管道系统事故特征演化及完整性管理”，2021YFB4001603；国家重点研发计划项目“质子交换膜燃料电池与氢基内燃机混合发电系统技术-氢基燃料改质、纯化及现场氢源总成”，2022YFB4003701；国家自然科学基金资助项目“基于表面张力/压力差驱动的低温推进剂在轨加注过程的气液高效分离机理研究与技术开发”，52176161。
（收稿日期：2023-06-08；修回日期：2023-06-30；编辑：张雪琴）
更新日期/Last Update:
2023-10-25