首页|掺氢天然气管路结构对超声波流量计适应性计算流体力学仿真研究

掺氢天然气管路结构对超声波流量计适应性计算流体力学仿真研究

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氢气是实现降低温室气体排放的潜在能源载体.氢气输送是阻碍氢能大规模应用的薄弱环节.而掺氢天然气管路是实现氢气大规模、长距离、低成本输送的高效途径.但氢气掺入天然气会导致流速,压力等参数发生变化,影响超声波流量计的性能.因此,研究氢气和天然气的掺混过程及超声波流量计的适应性是很有必要的.构建T型管、单螺旋管、单螺旋+前收缩管掺混管路的三维模型,使用计算流体动力学(computational fluid dynamics,CFD)方法分析管路结构和掺氢比对流场氢气浓度和混合气体速度分布规律的影响.结果表明:5%掺氢体积比时C型掺混管路为最佳模型,掺混均匀时的氢气摩尔分数约为4.92%.通过分析超声波流量计的适应性,进而推荐具体安装位置.研究成果为超声波流量计在掺氢天然气精确计量方面提供了参考.
Adaptability of Ultrasonic Flowmeter for Pipeline Structures of Hydrogen Blended to Natural Gas Using CFD
Hydrogen is a potential energy carrier that reduces greenhouse gas emissions.The amount of transport of hydrogen is the weakness limiting its large-scale application.Hydrogen blended to natural gas can realize the large-scale,long distance,low-cost trans-portation for hydrogen.The hydrogen blended natural gas causes change of the flow rate,pressure and so on,then reduce the perform-ance of ultrasonic flowmeter.Therefore,it is necessary to research the mixing process of hydrogen blended to natural gas and natural gas and the adaptability of ultrasonic flowmeter.T-type,one-turn spiral and one-turn spiral combined shrink pipeline model was con-structed.The effect of piping structure,mixing hydrogen ratio on the hydrogen concentration and velocity distribution was researched in mixed gas in the flow field using computational fluid dynamics(CFD).The results show that when hydrogen ratio is 5%,the blended pipeline C is the best.Hydrogen mole fraction is about 4.92%when hydrogen and natural gas is blended uniformly.By analyzing the adaptability of ultrasonic flow meters,specific installation locations can be recommend.The research results can provide reference for accurate metering of hydrogen blended to natural gas with ultrasonic flowmeter.

hydrogen-blended natural gas volume rationatural gas pipeline structurecomputational fluid dynamics(CFD)ultra-sonic flowadaptability

贾冠伟、冀守虎、闫双杰、李睿、杨沐村、许未晴、蔡茂林

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河南大学物理与电子学院,开封 475004

气动热力储能与供能北京市重点实验室,北京 100191

国家管网集团科学技术研究总院,廊坊 065000

国家电投集团科学技术研究院有限公司,北京 102209

北京航空航天大学自动化科学与电气工程学院,北京 100191

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掺氢体积比 天然气管路结构 计算流体动力学(CFD) 超声波流量 适应性

国家管网集团公司科研项目河南省科技攻关项目北京高校卓越青年科学家计划项目国家电投集团科研项目

WZXGL202104222102220090BJJWZYJH01201910006021B1-KYB12022QN02

2024

10.12404/j.issn.1671-1815.2302134

科学技术与工程
中国技术经济学会

科学技术与工程

CSTPCD北大核心
影响因子：0.338
ISSN：1671-1815
年,卷(期)：2024.24(4)
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