掺氢天然气取样技术适应性研究

张佩颖; 宋柯静; 张建; 林青瑾; 涂振权; 毕颂雅; 毛勇

doi:10.3969/j.issn.1007-3426.2025.05.018

掺氢天然气取样技术适应性研究

Adaptability of sampling technology for hydrogen-blended natural gas

摘要

摘要:
目的为了确认现有天然气取样方法是否满足掺氢天然气的取样，开展了掺氢天然气取样技术适应性研究。
方法采用不同材质取样瓶、不同取样方法对掺氢天然气进行取样分析，开展长期稳定性实验，并将取样技术运用到实际掺氢天然气管道。
结果充气排空法、控制流量法两种取样方法均适用于多种氢气含量的掺氢天然气，取样具有代表性；不锈钢和铝合金两种材质取样瓶气密性良好，样品储存稳定，适用于掺氢天然气的取样。
结论研究为掺氢天然气的取样分析提供了技术支持。

Abstract:
Objective To verify whether the existing natural gas sampling methods are suitable for hydrogen-blended natural gas, this study conducted an adaptability investigation on hydrogen-blended natural gas sampling technology.
Method Various cylinders of different materials and different sampling methods were employed for sampling and analysis of hydrogen-blended natural gas, complemented by long-term stability experiments and practical applications in real hydrogen-blended natural gas pipelines.
Result The experiments demonstrated that both the gas filling and venting method and the controlled flow rate method exhibit satisfactory representativeness for sampling hydrogen-blended natural gas with various hydrogen mole fractions. Stainless steel and aluminium alloy sampling cylinders showed excellent gas tightness and stable sample storage performance, proving their applicability for hydrogen-blended natural gas sampling.
Conclusion This study provides technical support for sampling and analysis of hydrogen-blended natural gas systems.

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