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[1]张 浩,王 帅,耑 锐,等.过冷度对飞行器贮箱热力学排气系统性能的影响[J].火箭推进,2020,46(04):74-81.
　ZHANG Hao,WANG Shuai,ZHUAN Rui,et al.Effect of subcooled degree on performance of thermodynamic vent system in spacecraft tank[J].Journal of Rocket Propulsion,2020,46(04):74-81.
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过冷度对飞行器贮箱热力学排气系统性能的影响

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 46 期数: 2020年04期 页码: 74-81 栏目: 研究与设计 出版日期: 2020-08-18
Title:
Effect of subcooled degree on performance of thermodynamic vent system in spacecraft tank
文章编号:
1672-9374(2020)04-0074-08
作者:
张 浩1; 王 帅1; 耑 锐1; 陈其法1; 张 亮1; 汪 彬1; 黄永华2
(1.上海宇航系统工程研究所,上海 201109; 2.上海交通大学 制冷与低温工程研究所,上海 200240)
Author(s):
ZHANG Hao1; WANG Shuai1; ZHUAN Rui1; CHEN Qifa1; ZHANG Liang1; WANG Bin1; HUANG Yonghua2
(1.Aerospace System Engineering Shanghai, Shanghai 201109, China; 2.Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China)
关键词:
低温贮箱;  热力学排气;  过冷度;  压力控制
Keywords:
cryogenic tank;  thermodynamic vent;  subcooled degree;  pressure control
分类号:
V511.6
文献标志码:
A
摘要:
为了研究低温推进剂贮箱的压力控制特性和热力学排气系统的运行特性,建立了耦合贮箱内流体流动相变过程与热力学排气系统(TVS)的数学模型,对TVS系统运行后贮箱的压力和温度变化进行了仿真计算。在以液氮为贮存工质的低温流体高效贮存平台上,进行了仿真模型的验证。分析了不同液体过冷度对低温贮箱温度和压力控制特性的影响。研究发现,在相同的在轨贮存周期内,对于饱和状态的液氢和液氧,TVS只有在排气模式下才能实现低温贮箱的压力控制,而对于过冷状态的液氢和液氧,TVS只需进行混合模式运行便可实现低温贮箱压力控制,且TVS混合运行时间随液体过冷度的增加而减少,16 K液氢时TVS的运行时间(546 s)相比于20 K液氢(663 s)减少了17.6%,78 K液氧时TVS的运行时间(2 760 s)相比于90 K液氧(16 469 s)减少了83.2%。过冷液体与气枕的混合可以实现低温流体在轨贮存过程中的零排放。
Abstract:
In order to investigate the pressure control behavior of cryogenic propellant tank and operating performance of thermodynamic vent system(TVS), a mathematical model coupling both the fluid flow phase change in the tank and the thermodynamic vent subsystem was established, and the tank self-pressurization process and the tank pressure control effect under the operation of TVS were simulated.In the cryogenic fluid storage platform using liquid nitrogen as the working medium, the tank pressure control experiment was conducted to verify the simulation model.The influence of subcooled degree on the temperature and pressure control of the cryogenic tank was analyzed.It is found that during the same in-orbit storage period, for the saturated LH2-LO2 propellant, the tank pressure can only be controlled with the vent mode of TVS.For the LH2-LO2 propellant in subcooled state, the TVS only need operating in the mixing mode to control the tank pressure.Moreover, the mixing operation duration deceases with the increase of the liquid subcooled degree, and TVS takes 17.6% less operation time(546 s)at 16 K liquid hydrogen than at 20 K liquid hydrogen(663 s).The operation time of TVS at 78 K liquid oxygen(2 760 s)is 83.2% less than that at 90 K liquid oxygen(16 469 s).Zero discharge of cryogenic fluid during in-orbit storage can be achieved by mixing the subcooled liquid and the superheated ullage.

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备注/Memo

收稿日期:2019-11-18; 修回日期:2019-12-30
基金项目:国家自然科学基金(51676118); 上海市科技计划项目(20YF1447900)
作者简介:张浩(1981—),男,硕士,高级工程师,研究领域为运载火箭及飞行器动力系统设计

更新日期/Last Update: 2020-07-30