低温推进剂加注流程动态特性仿真

Simulation on dynamic characteristics of cryogenic propellant filling process

在建立低温真空管路、低温真空阀门、低温真空容器、低温过滤器等单机低温设备仿真模型的基础上,按照实际管路系统布局建立了某低温火箭液氧加注系统三维仿真模型。依据实际低温加注工序和参数,完成了加注全流程动态特性分析和仿真,对加注过程中温度、压力、流量、液位等参数进行了仿真预示。通过与试验数据对比,证明了系统全流程动态特性仿真的可行性和有效性。研究成果可用于低温加注系统方案优化设计、工艺流程设计、故障预案演示等,同时可作为开展低温系统加注过程自动化测试、加注和健康管理的基础。

On the basis of the simulation models of cryogenic equipment such as cryogenic vacuum pipeline , cryogenic vacuum valve, cryogenic vacuum vessel and cryogenic filter, a three-dimensional simulation model of liquid oxygen filling system of a cryogenic rocket was established according to the layout of the actual pipeline system. According to the actual cryogenic injection procedure and parameters,the dynamic characteristic analysis and simulation of the whole filling process were completed , and the parameters such as temperature, pressure, flow rate and liquid level during the filling process were simulated and predicted. By comparing with the experimental data, the feasibility and effectiveness of the whole process dynamic simulation were proved. The results of study can be used in the optimization design of cryogenic filling system , process flow design ,failure plan demonstration and so on. At the same time , it can be used as an foundation for automatic test, filling and health management of cryogenic filling system.