不同失效模式下混氢天然气管道泄漏后果及风险分析研究

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-05-05 DOI:10.1016/j.ijhydene.2025.04.440

Chaoya Guo, Jieyu Jiang, Bin Zhang, Fei Lou

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引用次数: 0

摘要

利用现有天然气管道输送混氢天然气是一种灵活、经济的再利用方式，但氢气的可燃性和易爆性给天然气管道带来了更多的安全不确定性。研究了混氢天然气管道在不同失效模式下泄漏爆炸事故的后果和风险。结果表明：破裂模式下水平扩散距离随掺氢比的变化趋势与裂缝和孔洞模式相反；射流火灾初始阶段，孔洞和破裂模式的辐射强度迅速下降，且与氢气混合比呈正相关，裂隙模式的辐射强度较低，辐射距离较短。最后，对不同模式下的潜在影响半径公式进行修正，以风速和氢气混合比为自变量，方便进行风险评估。

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A study on the leakage consequence and risk analysis of hydrogen-blended natural gas pipeline in different failure modes

To transport hydrogen-blended natural gas with existing natural gas pipelines is a flexible and economical reutilization, but the flammability and explosivity of hydrogen bring more safe uncertainty to natural gas pipeline. The consequences and risk in leakage and explosion accidents of hydrogen-blended natural gas pipeline in different failure modes are studied in this paper. Results show that the trend of horizontal diffusion distance in rupture mode changing with hydrogen blending ratio is opposite to that of crevice and hole mode. The radiation intensity of hole and rupture modes decreases rapidly and positively correlates with hydrogen blending ratio in the initial part of jet fire, and the lower radiation intensity and shorter radiation distance are observed in crevice mode. Finally, the potential impacts radius formulas in different modes are modified with wind speed and hydrogen blending ratio as independent variables for the convenient risk assessment.

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.