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,提出基于故障分析的阀门优化设计理念。深入分析主调压阀故障产生的根源,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、提升密封性能和改良位移传感器刚度等方式提高阀门的可靠性。结果表明:试验过程总压调节精度提升至±1.67%以内,新研制的调压阀结构更加安全可靠,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, a valve optimization design concept based on fault analysis is proposed. In-depth analysis of the root causes of the main pressure regulating valve faults, optimization and improvement design are carried out from the aspects of materials, structure and production technology according to the fault causes, and 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. The results show that the total pressure adjustment precision is increased to within 1.67% during the test process, and the newly developed pressure regulating valve structure is safer and more reliable, with good practical use effect and better pressure regulating characteristics.

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历史
  • 收稿日期:2023-10-22
  • 最后修改日期:2023-12-14
  • 录用日期:2023-11-20
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