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[1]牛帅帅　赵杰　李敬法　吴小华　宇波　李建立.液氢低温输运管道环空绝热技术研究进展[J].油气储运,2024,43(06):1-17.
　Niu Shuaishuai,Zhao Jie,Wu Xiaohua,et al.Research progress of liquid hydrogen cryogenic transportation pipeline circumferential air insulation technology[J].Oil & Gas Storage and Transportation,2024,43(06):1-17.
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液氢低温输运管道环空绝热技术研究进展

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 43 期数: 2024年06期 页码: 1-17 栏目: 出版日期: 2024-06-25
Title:
Research progress of liquid hydrogen cryogenic transportation pipeline circumferential air insulation technology
作者:
牛帅帅　赵杰　李敬法　吴小华　宇波　李建立
Author(s):
Niu Shuaishuai;  Zhao Jie;  Wu Xiaohua;  Li Jingfa;  Yu Bo;  Li Jianli
关键词:
液氢; 低温输运管道; 低温绝热技术; 绝热支撑; 真空多层绝热
Keywords:
liquid hydrogen;  ; cryogenic transportation pipelines;  low-temperature insulation technology;  ; insulation support;  ; vacuum multi-layer insulation
分类号:
TK91
文献标志码:
A
摘要:
【目的】液氢因具有体积密度大、氢纯度高等优势而备受关注，但极低的沸点导致其在输运过程中易蒸发而造成氢损失,低温绝热技术是实现液氢管道输运的关键手段。【方法】从热传递的3种方式（固体导热、气体导热、辐射换热）对管道环空间的漏热进行分析，固体导热主要来源于环空间绝热支撑结构，总结了不同类型支撑结构的导热性能。同时，维持环空间夹层真空度可以有效削弱因气体导热引起的漏热。真空多层绝热材料对低温绝热技术的影响是研究热点，在此从真空多层绝热材料预测模型、绝热材料布置方式、定密度多层绝热与变密度多层绝热等方面分别进行了讨论分析。【结果】在保证应力强度的前提下改善支撑形状，最大限度缩短传热路径、减少支撑与内外管的接触点个数及接触面积大小能够有效降低支撑的漏热量。进一步研究低成本与高效率的吸气剂是维持真空度最直接的有效方法。真空多层绝热技术在低温设备中应用广泛，可有效减少固体导热、气体导热及辐射换热。定密度多层绝热和变密度多层绝热都存在最佳层密度排布使漏热最低，并且变密度多层绝热具有更好的绝热性能及重量优势。【结论】合理优化环空间几何结构和热传递方式并研制高效吸氢剂，对推动液氢低温输运管道环空绝热技术、有效降低液氢输运过程中的氢损失具有重要意义。
Abstract:
Liquid hydrogen has attracted much attention because of its advantages such as high bulk density and high hydrogen purity, but its extremely low boiling point leads to easy evaporation and hydrogen loss during transportation, and low-temperature adiabatic technology is the key means to realize pipeline transportation. The heat leakage in the annular space of the pipeline is analyzed from three ways of heat transfer by means of literature research, and the heat conduction mainly comes from the adiabatic support structure in the annular space, and the thermal conductivity of different types of support structures is summarized; at the same time, the maintenance of the vacuum degree of the interlayer in the annular space can effectively weaken the leakage of the heat caused by the gas thermal conductivity; moreover, the influence of the vacuum multilayer insulating materials on the low-temperature adiabatic technology is a hotspot of the research, therefore, it is important for the In addition, the influence of vacuum multilayer insulation materials on low-temperature insulation technology is a research hotspot, therefore, the prediction model of vacuum multilayer insulation materials, the arrangement of insulation materials, fixed-density multilayer insulation and variable-density multilayer insulation are discussed, and the results show that the optimal layer density arrangement exists in both fixed-density and variable-density multilayer insulation to minimize the heat leakage, and the variable-density multilayer insulation has a better adiabatic performance and weight advantage.Reasonable optimization of the ring space geometry and heat transfer mode and the development of efficient hydrogen absorbers are of great significance to promote the ring space insulation technology of liquid hydrogen cryogenic transport pipeline and effectively reduce the hydrogen loss during liquid hydrogen transport. 

相似文献/References:

[1]牛帅帅,赵杰,李敬法,等.液氢低温输送管道环空绝热技术研究进展[J].油气储运,2024,43(04):373.[doi:10.6047/j.issn.1000-8241.2024.04.002]
　NIU Shuaishuai,ZHAO Jie,LI Jingfa,et al.Research progress of annulus insulation technology for cryogenic liquid hydrogen pipelines[J].Oil & Gas Storage and Transportation,2024,43(06):373.[doi:10.6047/j.issn.1000-8241.2024.04.002]

更新日期/Last Update: 2024-03-15