航天推进技术研究院主办
[1]薛 翔,杜 磊,王浩明,等.闭式布雷顿循环核心机调控过程仿真分析[J].火箭推进,2021,47(05):49-55.
XUE Xiang,DU Lei,WANG Haoming,et al.Simulation analysis of adjustment and control process for core machine in closed Brayton cycle[J].Journal of Rocket Propulsion,2021,47(05):49-55.
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XUE Xiang,DU Lei,WANG Haoming,et al.Simulation analysis of adjustment and control process for core machine in closed Brayton cycle[J].Journal of Rocket Propulsion,2021,47(05):49-55.
闭式布雷顿循环核心机调控过程仿真分析
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
47
期数:
2021年05期
页码:
49-55
栏目:
研究与设计
出版日期:
2021-10-28
- Title:
- Simulation analysis of adjustment and control process for core machine in closed Brayton cycle
- 文章编号:
- 1672-9374(2021)05-0049-07
- 分类号:
- V476.2
- 文献标志码:
- A
- 摘要:
- 为了保证闭式布雷顿循环核心机在空间核电推进系统内能够稳定运行,需要在其调控过程中同时控制多个系统变量参数,设定合适的初始状态和调控策略。通过对整个闭式布雷顿循环的系统仿真,模拟了不同初始压力的情况下核心机在升速加载过程中的系统参数变化情况。在核心机转速与反应堆加热协同配合的调控策略下,压气机在整个升速加载过程中可以始终处于稳定运行区间内,而循环系统的初始压力会影响核心机加载过程中的各项参数,尤其是涡轮入口温度。在相对较低的系统初始压力情况下,需要在更高的涡轮入口温度条件下,才能够达到与高初始压力情况下相同的满状态电功率输出。仿真结果验证了以精确转速控制作为运行标准的核心机调控策略可行性,同时可以为循环系统不同阶段的热试车试验提供指导建议。
- Abstract:
- To ensure that the core machine in the closed Brayton cycle can operate stably in the space nuclear power propulsion system,it is necessary to control multiple system variables at the same time during its regulation process,and set appropriate initial states and control strategies. Through the system simulation of the entire closed Brayton cycle,the system parameter changes of the core machine during the speed-up loading process are simulated under different initial pressures. Under the control strategy of the core engine rotational speed cooperated with the reactor heating,the compressor can always be in a stable operation range during the entire speed-up loading process. The initial pressure of the circulation system will affect various parameters during the loading process of the core engine,especially the turbine inlet temperature. In the case of a relatively low system initial pressure,a higher turbine inlet temperature is required to achieve the same full-state electrical power output as that under a high initial pressure condition. The simulation results verify the feasibility of the core machine adjustment strategy with precise speed control as the operating standard. Meanwhile,these can provide guidance and suggestions for the hot commissioning test of the circulatory system at different stages.
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备注/Memo
基金项目:上海市科学技术委员会科研计划项目(19DZ1206502) 上海市青年科技英才扬帆计划项目(21YF1430200)
作者简介:薛翔(1992—),男,博士,研究领域为空间热电转换系统内叶轮机械稳定性分析。
更新日期/Last Update:
1900-01-01