作　　者： (王承）; (巨永林）; (陈煜）; (岢锐）; (张浩）; (张亮）;

机构地区： 上海交通大学机械与动力工程学院,上海200240

出　　处： 《低温与超导》 2017年第8期20-25,共6页

摘　　要： 冷氦增压系统是低温液体推进系统的关键技术之一。利用仿真软件Sinda/Fluint,对氧箱冷氦增压系统的冷氦气瓶加注过程和系统增压过程进行了基于集总参数法的建模与计算分析。首先,对冷氦气瓶加注过程给出了最优加注流量,并分析了气瓶内温度压力达到稳定所需的时间、冷氦气瓶充气过程瓶内最高温度以及气瓶与周围液氧的传热;其次,针对冷氦增压系统,详细研究了两种气瓶布局条件下,贮箱增压过程中冷氦气瓶温度、压力随时间的变化,以及氧箱内气枕与液氧的温度、压力变化情况;最后,还对增压过程中的氦气流量、传热特性进行了研究。 Cold helium pressurization system is one of the key technologies of the cryogenic propulsion system. Numerical models to describe the filling procedures for the pressurized tank and oxygen tank pressurization were developed using Sinda/ Fluint in this paper. For the pressurized tank filling procedure, the best filling flow rate was predicted and the change of the corresponding thermodynamic quantities of helium tanks was presented, as well as the heat transfer between helium tanks and liquid oxygen. For the first stage oxygen tank pressurization, the changes of thermodynamic quantities of the ullage, liquid oxygen and helium tanks during oxygen outflow were studied. The performances of two kinds of helium tank layout schemes were proposed and compared for the optimization of pressurization system. In addition, the helium mass flow rate and heat transfer characteris- tics were also studied in the present paper.

关 键 词： 增压系统 火箭 液氧 氦气 仿真