某超声速风洞主调压阀可靠性改进
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中国空气动力研究与发展中心高速空气动力研究所

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Reliability improvement of the main pressure regulator in a supersonic wind tunnel
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    摘要:

    针对某超声速风洞DN2000主调压阀因运动部件磨损、结构振动严重导致其运行过程中可靠性下降的问题,提出了基于故障分析的阀门优化设计理念。首先深入分析了主调压阀故障产生的根源,然后根据故障原因从材料、结构及生产工艺上开展优化改进设计,通过改进阀芯支撑方式、优化阀体内部结构、提升密封性能、改良位移传感器刚度等方式提高阀门的可靠性。试验过程总压调节精度提升至±1.67%以内,强度分析、模态分析结果均表明新研制的调压阀结构也更加安全可靠,实际使用效果良好,调压特性更加优良。

    Abstract:

    Aiming at the problem that the reliability of the main pressure regulating valve DN2000 in a supersonic wind tunnel is reduced due to the wear of moving parts and serious structural vibration, the optimal design concept of the valve based on fault analysis is put forward. Firstly, the root causes of the main pressure regulating valve faults are analyzed in depth, and then the design is optimized and improved from the aspects of material, structure and production process according to the fault causes. The reliability of the valve is improved by improving the support mode of the valve core, optimizing the internal structure of the valve body, improving the sealing performance and improving the stiffness of the displacement sensor. During the test, the total pressure adjustment accuracy is improved to less than 1.67%. The results of strength analysis and modal analysis show that the newly developed pressure regulating valve structure is safer and more reliable, and the actual use effect is good, and the pressure regulating characteristics are better.

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历史
  • 收稿日期:2023-10-22
  • 最后修改日期:2023-11-07
  • 录用日期:2023-11-20
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