| 减压阀启动振荡分析与抑制研究 |
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| 引用本文： | 徐登伟,朱建国.减压阀启动振荡分析与抑制研究[J].火箭推进,2021,47(2):76-80. |
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| 作者姓名： | 徐登伟 朱建国 |
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| 作者单位： | 西安航天动力研究所,陕西 西安710100 |
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| 基金项目： | 装备预研联合基金(6141B06240601)。 |
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| 摘 要： | 为了解决某型姿控发动机减压阀压力振荡导致阀芯密封面损坏,进而影响调压功能的问题,对其启动过程出口压力振荡和抑制方法进行了研究。基于AMESim仿真平台建立了减压阀仿真模型,分析了阀芯行程和限流孔对减压阀启动特性的影响,结果表明:减小阀芯行程和增加限流圈均有利于抑制减压阀启动过程出口压力振荡。基于此优化了阀芯行程,并在入口增加限流圈,试验表明改进后的减压阀出口压力相对平稳,振荡现象得到有效抑制。
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| 关 键 词： | 减压阀 启动振荡 机理分析 AMESim振荡 抑制 |
Analysis and inhibition research on startup pressure oscillation of pressure reducing valve |
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| XU Dengwei,ZHU Jianguo.Analysis and inhibition research on startup pressure oscillation of pressure reducing valve[J].Journal of Rocket Propulsion,2021,47(2):76-80. |
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| Authors: | XU Dengwei ZHU Jianguo |
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| Institution: | (Xi'an Aerospace Propulsion Institute, Xi'an 710100, China) |
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| Abstract: | In order to prevent the damage of pressure oscillation on the sealing area of valve core,a pressure reducing valve in attitude control engine system was studied on the outlet pressure oscillation during start-up process and the inhibition approaches.Based on AMESim simulation platform,a simulation model of PRV was established to analyze the influence of valve spool opening degree and orifice on the starting characteristics.The simulation results show that adding orifice and reducing spool opening degree are beneficial to suppress the pressure oscillation during start-up process.Therefore,the valve spool opening degree is optimized and the flow limiting ring is added at the inlet.The test results indicate that the outlet pressure of the improved PRV is relatively stable and the oscillation phenomenon is effectively suppressed. |
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| Keywords: | pressure reducing valve(PRV) startup pressure oscillation mechanism analysis AMESim oscillation inhibition |
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