辽宁石油化工大学学报 ›› 2024, Vol. 44 ›› Issue (4): 44-50.DOI: 10.12422/j.issn.1672-6952.2024.04.006

• 石油与天然气工程 • 上一篇    下一篇

掺氢比对天然气管道泄漏扩散影响的模拟研究

张准顺1(), 潘振1, 包瑞新2, 李洋1, 马贵阳1   

  1. 1.辽宁石油化工大学 石油天然气工程学院,辽宁 抚顺 113001
    2.辽宁石油化工大学 机械工程学院,辽宁 抚顺 113001
  • 收稿日期:2023-05-28 修回日期:2023-06-21 出版日期:2024-08-25 发布日期:2024-08-06
  • 通讯作者: 马贵阳
  • 作者简介:张准顺(1998⁃),男,硕士研究生,从事掺氢天然气管道安全运营方面的研究;E⁃mail:1595919663@qq.com
  • 基金资助:
    国家自然科学基金项目(41502100);辽宁省自然资源厅海洋平台智能钻井与随钻检测关键技术与装备研发项目(1638920994698)

Simulation Study on the Influence of Hydrogen Blending Ratio on Natural Gas Pipeline Leakage and Diffusion

Zhunshun ZHANG1(), Zhen PAN1, Ruixin BAO2, Yang LI1, Guiyang MA1   

  1. 1.College of Petroleum Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
    2.School of Mechanical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
  • Received:2023-05-28 Revised:2023-06-21 Published:2024-08-25 Online:2024-08-06
  • Contact: Guiyang MA

摘要:

为了研究掺氢比对天然气管道泄漏的影响,基于计算流体力学理论,采用数值模拟方法,建立了直埋高压掺氢天然气管道泄漏扩散的数学模型,分析了掺氢比不同时掺氢天然气的泄漏状况、体积分数分布状况,以及管道周围土壤压力与气体泄漏速度的分布情况。结果表明,随着掺氢比的增加,大气中掺氢天然气的爆炸半径逐渐减小,管道周围高压区域范围逐渐减小,而泄漏口处的气体泄漏速度逐渐增大;当掺氢比为30%(体积分数)时,大气中的爆炸半径相较于纯天然气的爆炸半径减小了43%,泄漏口处气体泄漏速度增大68%。研究结果可为掺氢天然气管道的安全抢修提供理论参考依据,对推动掺氢天然气的大规模应用具有重要的实际意义。

关键词: 掺氢天然气, 泄漏, 扩散, 数值模拟, 安全

Abstract:

To study the influence of hydrogen mixing ratio on the leakage of natural gas pipelines, a mathematical model for the leakage and diffusion of directly buried high?pressure hydrogen mixed natural gas pipelines was established based on computational fluid dynamics theory and numerical simulation method.The leakage status, volume fraction distribution of hydrogen mixed gas,and the distribution of soil pressure and gas velocity around the pipeline were analyzed under different hydrogen mixing ratios.The results show that with the increase of hydrogen mixing ratio, the explosion radius of hydrogen mixed gas in the atmosphere will gradually decrease,and the range of high?pressure area around the pipeline will gradually decrease,and the gas flow rate at the leakage port will gradually increase.When the hydrogen mixing ratio is 30%,the explosion radius in the atmosphere is reduced by 43%,and the gas flow rate at the leakage port is increased by 68%.This provides a theoretical reference for the safety and emergency repair of hydrogen?doped natural gas pipelines and has important practical significance for promoting the large?scale application of hydrogen?doped natural gas.

Key words: Hydrogen?mixed natural gas, Leakage, Diffusion, Numerical simulation, Safety

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引用本文

张准顺, 潘振, 包瑞新, 李洋, 马贵阳. 掺氢比对天然气管道泄漏扩散影响的模拟研究[J]. 辽宁石油化工大学学报, 2024, 44(4): 44-50.

Zhunshun ZHANG, Zhen PAN, Ruixin BAO, Yang LI, Guiyang MA. Simulation Study on the Influence of Hydrogen Blending Ratio on Natural Gas Pipeline Leakage and Diffusion[J]. Journal of Liaoning Petrochemical University, 2024, 44(4): 44-50.

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链接本文: https://journal.lnpu.edu.cn/CN/10.12422/j.issn.1672-6952.2024.04.006

               https://journal.lnpu.edu.cn/CN/Y2024/V44/I4/44