航天推进技术研究院主办
ZHANG Weixing,LIU Jiatian,CHEN Erfeng.Flutter feature and its prevention strategies of the double pressurization check valves connected in series[J].Journal of Rocket Propulsion,2022,48(05):46-53.
双增压单向阀颤振特性分析及防颤策略
- Title:
- Flutter feature and its prevention strategies of the double pressurization check valves connected in series
- 文章编号:
- 1672-9374(2022)05-0046-08
- 分类号:
- V434 TH138
- 文献标志码:
- A
- 摘要:
- 针对新一代运载火箭贮箱增压单向阀的泄漏问题,全面分析了单向阀结构组成及工作原理,建立了双增压单向阀串联模式的AMESim模型,并对其阀芯颤振特性进行了研究。结果表明,相比于单个增压单向阀的贮箱增压模式,双单向阀串联后阀芯的颤振现象加剧 而通过增加两单向阀之间的管路容积,可有效缓解单向阀的颤振情况。在此基础上,提出了抑制阀芯颤振的3种策略,并结合数值分析结果和工程实践经验,对3种防颤策略的技术可行性进行了对比研究,所获得的研究成果对于新一代运载火箭贮箱增压系统的可靠性提升具有一定价值。
- Abstract:
- In order to solve the gas leakage problem of the check valves applied in the tank of new generation rockets, structure and working principles of the check valve were analyzed, and the AMESim model of the double pressurization check valves connected in series was created.Based on this numerical model, the flutter feature of the spool was studied, and the results indicate that compared with the single check valve model, the flutter phenomenon will be more severe after two check valves were connected in series.Besides, if the tube capacity between two check valves was increased, the flutter phenomenon will be weakened effectively.At last, three flutter prevention strategies were proposed, and contrastive research on the technical feasibility between different prevention strategies was conducted according to the numerical analysis results and the engineering experience.The study results obtained will be helpful to improve the reliability of the tank pressurization system in new generation rockets.
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备注/Memo
收稿日期:2021-07-15 修回日期:2021-08-31
基金项目:国家联合基金项目(U1937602)
作者简介:张维星(1990—),男,硕士,工程师,研究领域为航天测试发射技术。