石油化工高等学校学报 ›› 2024, Vol. 37 ›› Issue (4): 25-32.DOI: 10.12422/j.issn.1006-396X.2024.04.004

• 石油工程 • 上一篇    下一篇

掺氢天然气高压管道小孔泄漏及扩散特性

支树洁1(), 徐海峰2, 刘罗茜1, 薛仕龙2, 彭士垚1, 张小斌2()   

  1. 1.中国管网集团公司研究总院,河北 廊坊 065099
    2.浙江大学 低温与制冷研究所,浙江 杭州 310027
  • 收稿日期:2023-08-14 修回日期:2023-11-20 出版日期:2024-08-25 发布日期:2024-08-07
  • 通讯作者: 张小斌
  • 作者简介:支树洁(1983⁃),女,高级工程师,从事天然气掺氢方面的研究;E⁃mail:zhisj@pipechina.com.cn
  • 基金资助:
    国家重点研发计划项目(2022YFB4002900)

Small Hole Leakage and Diffusion Characteristics of Hydrogen⁃Blended Natural Gas High⁃Pressure Pipeline

Shujie ZHI1(), Haifeng XU2, Luoqian LIU1, Shilong XUE2, Shiyao PENG1, Xiaobin ZHANG2()   

  1. 1.General Research Institute of China Pipeline Network Group,Langfang Hebei 065099,China
    2.Institute of Refrigeration and Cryogenics,Zhejiang University,Hangzhou Zhejiang 310027,China
  • Received:2023-08-14 Revised:2023-11-20 Published:2024-08-25 Online:2024-08-07
  • Contact: Xiaobin ZHANG

摘要:

通过现有的天然气管道运输掺氢天然气,可大幅降低氢气运输成本。为了评估掺氢天然气管道泄漏的风险,综合高压管道小孔泄漏模型和高斯羽流模型,考虑射流初始动量导致的抬升高度,将高斯羽流模型计算结果与已有实验数据进行对比,并分析了掺氢天然气管道发生单个小孔竖直向上喷射泄漏后,掺氢比、管道压力、风速和泄漏孔直径对泄漏气体导致的爆炸危险区域范围的影响规律。结果表明,高斯羽流模型计算结果与实验数据比较吻合;甲烷危险区域最大距离与掺氢比近似呈线性负相关,氢气危险区域最大距离与掺氢比近似呈线性正相关;甲烷和氢气危险区域最大距离与管道压力近似呈线性正相关,与风速近似呈抛物线型负相关,与泄漏孔直径近似呈正相关。

关键词: 掺氢天然气, 高压管道, 泄漏, 扩散, 高斯羽流模型, 危险区域

Abstract:

Transporting hydrogen?blended natural gas (HBNG) through existing natural gas pipelines can significantly reduce the cost of hydrogen transportation. To evaluate the risk of HBNG pipeline leakage, a high?pressure pipeline small?hole leakage model and a Gaussian plume model are combined, taking into account the lifting height caused by the initial momentum of the jet. The calculation results of the Gaussian plume model are compared with the existing experimental data. Then, the influence of the hydrogen mixing ratio, pipeline pressure, wind speed, and leakage hole diameter on the explosion risk area caused by the leakage of the natural gas pipeline is analyzed. The research results indicate that the calculation results of the Gaussian plume model are in good agreement with the experimental data. The hydrogen mixing ratio is approximately linearly negatively correlated with the maximum distance from the methane hazardous area, and linearly positively correlated with the maximum distance from the hydrogen hazardous area. The maximum distance between methane and hydrogen hazardous areas is approximately linearly positively correlated with pipeline pressure, negatively correlated with wind speed, and approximately proportional to the diameter of the leakage hole.

Key words: Hydrogen?blended natural gas, High pressure pipeline, Leakage, Diffusion, Gaussian plume model, Danger zone

中图分类号: 

引用本文

支树洁, 徐海峰, 刘罗茜, 薛仕龙, 彭士垚, 张小斌. 掺氢天然气高压管道小孔泄漏及扩散特性[J]. 石油化工高等学校学报, 2024, 37(4): 25-32.

Shujie ZHI, Haifeng XU, Luoqian LIU, Shilong XUE, Shiyao PENG, Xiaobin ZHANG. Small Hole Leakage and Diffusion Characteristics of Hydrogen⁃Blended Natural Gas High⁃Pressure Pipeline[J]. Journal of Petrochemical Universities, 2024, 37(4): 25-32.

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