全尺寸掺氢天然气管道裂纹泄漏扩散规律实验研究

韩子从; 董绍华; 李佳美; 孙萌; 陈林

doi:10.3969/j.issn.1000-1565.2025.05.003

河北大学学报(自然科学版) >

2025 , Vol. 45 >Issue 5: 466 - 475

DOI: https://doi.org/10.3969/j.issn.1000-1565.2025.05.003

全尺寸掺氢天然气管道裂纹泄漏扩散规律实验研究

韩子从 ,
董绍华 ,
李佳美 ,
孙萌 ,
陈林

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韩子从(1998—),男,中国石油大学(北京)在读博士研究生,主要从事氢能安全方向研究.
E-mail: 378664216@qq.com

收稿日期: 2025-02-18

网络出版日期: 2025-09-17

基金资助

中国石油大学(北京)科研基金项目(2462023BJRC020)

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Experimental study on crack leakage and diffusion behavior of full-scale hydrogen-blended natural gas pipeline

HAN Zicong ,
DONG Shaohua ,
LI Jiamei ,
SUN Meng ,
CHEN Lin

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Key Laboratory of Oil and Gas Safety and Emergency Technology, Ministry of Emergency Management, College of Safety and Ocean Engineering, China University of Petroleum, Beijing 102249, China

Received date: 2025-02-18

Online published: 2025-09-17

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摘要

掺氢天然气泄漏扩散规律的研究是保障天然气管道掺氢输运安全与有效推广的关键.本文介绍了一种泄漏扩散实验系统,并基于此开展掺氢天然气泄漏扩散实验研究.研究表明,与圆孔相比,裂纹泄漏具有明显方向性.通过3种运行压力对比发现,压力升高会使得近场的泄漏燃爆风险提高,但压力变化对远场的影响有限.利用玻尔兹曼公式拟合,发现泄漏气体云团相较运行介质具有更高的易燃易爆特性.本研究为掺氢天然气管道系统的安全稳定运行提供了理论依据与数组支撑,有利于推动氢能应用.

关键词： 氢能; 掺氢天然气; 裂纹; 泄漏扩散

本文引用格式

韩子从 , 董绍华 , 李佳美 , 孙萌 , 陈林 . 全尺寸掺氢天然气管道裂纹泄漏扩散规律实验研究[J]. 河北大学学报(自然科学版), 2025 , 45(5) : 466 -475 . DOI: 10.3969/j.issn.1000-1565.2025.05.003

Abstract

The study on the diffusion characteristics of hydrogen-blended natural gas leakage is of vital significance for ensuring the safety of transportation through pipelines and for the effective promotion of this technology. This research introduced a novel leakage experimental system. The system was used to conduct experimental research on the leakage and diffusion behaviors of hydrogen-blended natural gas. The research shows that crack induced leakage has obvious directionality, whereas the circular hole did not have. Experiments were carried out under three pressure levels. The results showed that increase of the operation pressure led to an increased risk in the near field, while the far field was not affected significant. Boltzmann formula was used to fit the experimental data.The results of fitting showed that the combustible gas cloud in air have higher flammability and explosiveness than the operating medium. This research provides theoretical basis and data support for the safe and reliable operation of hydrogen-blended natural gas systems, and promotes the application of hydrogen energy.

Key words： hydrogen energy; hydrogen-blended natural gas; cracks; leakage and diffusion

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