液氢储罐内增压过程温度场演化实验测试  

Experimental test of temperature field evolution during pressurization in liquid hydrogen storage tank

作　　者：张春伟 张首蕤 郭嘉翔 陈静[1] 李山峰[1] Zhang Chunwei;Zhang Shourui;Guo Jiaxiang;Chen Jing;Li Shanfeng(Beijing Institute of Aerospace Testing Technology,Beijing 100074,China)

机构地区：[1]北京航天试验技术研究所,北京100074

出　　处：《低温工程》2025年第1期1-11,28,共12页Cryogenics

基　　金：国家自然科学基金(52306020)。

摘　　要：由于液氢的易燃易爆特性,目前鲜有采用液氢介质的增压实验,尤其是缺少增压压力大于氢超临界压力的研究。为此搭建了特定的实验装置,设计径向阵列传感器组对不同压力和温度下的储罐内部温度场进行测量,获取液氢增压过程的温度场演化规律。实验结果表明,当增压压力为1 MPa时,液氢储罐内部自上而下分别为过热态、饱和态和过冷态,且饱和态层十分明显;但当增压氢气压力大于临界压力1.29 MPa时,液氢饱和态温度层消失,储罐自上而下分别为超临界态、临界态和过冷态,并且在临界态区域温度存在明显突变。获取的液氢增压温度场演化规律,可为后续多种复杂条件下的液氢安全应用提供参考和数据支撑。Due to the flammable and explosive characteristics of liquid hydrogen,there are currently few tank pressurization experiments using liquid hydrogen as a medium,especially the lack of research on pressurization pressure greater than the hydrogen supercritical pressure,which affects the use safety of liquid hydrogen to a certain extent.Given this,a specific experimental device was built,and a radial array sensor group was designed to measure the internal temperature field of the tank under different pressures and temperatures,and the evolution law of the temperature field during the process of liquid hydrogen pressurization was obtained.The experimental results show that when the pressurization pressure is 1 MPa,the liquid hydrogen storage tank is superheated,saturated and supercooled from top to bottom,and the saturated layer is very obvious.However,when the pressurized pressure is greater than the supercritical pressure of hydrogen 1.29 MPa,the saturated temperature layer of liquid hydrogen disappears,and the storage tank becomes supercritical,critical and supercooled from top to bottom respectively,and there is an obvious temperature mutation in the critical region.The evolution law of liquid hydrogen pressurization temperature field obtained in this paper can provide reference and data support for the safety application of liquid hydrogen under various complex conditions.

关 键 词：液氢 增压 超临界转化 温度场 

分 类 号：TK91[动力工程及工程热物理]