针对氢燃料在动力系统中的应用需求,从氢储存和氢增压输送两个方面,综述氢燃料储存的研究现状,探讨氢储存原理、输送方案、适用装置、各自优缺点以及安全控制手段,比较几种无损安全设计方案。依据氢无损储存系统设计要求而设计的液氢储罐,包括储箱形状设计、绝热结构选择、支撑结构设计、防晃设计、强度设计等,进行较为综合的比较与分析;并利用CFD内嵌模块对储罐的传热和强度进行数值计算,评估其低温绝热结构的保冷效果;根据承受载荷,对低温条件下的储罐载荷进行强度计算,分析应力应变特性;最后,进行实验验证该储罐保证热流密度小于1.4 W/m2的无损储存的设计要求。
Abstract
Aiming at the application requirements of hydrogen fuel in power systems, the research mainly focused on two sides： hydrogen storage and pressurization transport, including that the research status was reviewed, the principle of hydrogen storage was introduced, the storage and transportation scheme was summarized, the advantages and disadvantages were compared, and the strategy for enhancing system security hydrogen was valid, further, the zero boil-off storage schemes were compared. According to the system requirements and technology guide line for zero boil-off storage of hydrogen, the liquid hydrogen （LH2） storage tank was designed, related techniques were indicated below： firstly, the shape designing of a storage tank, the selection of thermal insulation structure, the demonstration of schemes for support structure, the designing of sloshing suppression for LH2 storage tank, and analysis of the design of strength; in addition, the heat transfer and strength of LH2 storage tanks were numerical calculated using CFD modules to evaluate the insulation effect of cryogenic insulation structures and analyzed the stress-strain of loaded LH2 storage tanks to strength calculation in cryogenic conditions; Finally, the test verified that the designed LH2 storage tank can meet the design requirements of zero boil-off storage that the value of heat flux was less than 1.4 W/m2. The results provided a theoretical basis and guidance for designing, developing, numerical simulation, and applying LH2 storage tanks in China.
关键词
氢燃料 /
液氢储罐 /
无损储存 /
数值模拟 /
实验验证
Key words
hydrogen fuel /
liquid hydrogen storage tank /
zero boil-off storage /
numerical simulation /
test verification
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基金
辽宁省教育厅基本科研项目面上项目（LJKMZ20220980）; 中国科学院低温工程学重点实验室开放课题（CRYO202207）
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