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Method for Determining the Reliable Life Parameter of Turbine Wheel of Turbocharger with Over-speed Failure Mode

机译:超速失效模式下涡轮增压器叶轮可靠寿命参数的确定方法

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摘要

For the over-speed failure mode, the method for determining the reliable life parameter of turbine wheel of turbocharger is proposed in this paper. The shortage of design criteria based on conventional safety factor for turbine wheel with over-speed failure mode is analyzed. In order to embody the characteristics of structure and over-speed failure mode, the turbine wheel is taken as a series system consisting of several blade symmetrical components in the reliability modeling process. The time-reliability models of turbine wheel are derived and the relationship between the reliability and failure rate of turbine wheel and life parameter is studied. Then, the method for determining the reliable life parameter of turbine wheel of turbocharger with over-speed failure mode is proposed based on the reliability model and reliability curve. As long as the design parameters including the number of blades, speed, stress, and strength are given, the reliable life of turbine wheel of turbocharger with over-speed failure mode can be determined with the method proposed.
机译:针对超速故障模式,提出了确定涡轮增压器叶轮可靠寿命参数的方法。分析了基于常规安全系数的涡轮机超速故障模式设计标准的不足。为了体现结构特征和超速故障模式,在可靠性建模过程中,将涡轮机叶轮作为一个由几个叶片对称部件组成的串联系统。推导了涡轮机叶轮的时间可靠性模型,研究了涡轮机叶轮的可靠性和故障率与寿命参数之间的关系。然后,基于可靠性模型和可靠性曲线,提出了确定超速故障模式下涡轮增压器叶轮可靠寿命参数的方法。只要给出包括叶片数量,速度,应力和强度在内的设计参数,就可以通过所提出的方法确定具有超速故障模式的涡轮增压器涡轮的可靠寿命。

著录项

  • 来源
  • 会议地点 Wuhan(CN)
  • 作者单位

    China North Engine Research Institute, National Key Laboratory of Diesel Engine TurbochargingTechnology, Datong, China 037036;

    China North Engine Research Institute, National Key Laboratory of Diesel Engine TurbochargingTechnology, Datong, China 037036;

    China North Engine Research Institute, National Key Laboratory of Diesel Engine TurbochargingTechnology, Datong, China 037036;

    China North Engine Research Institute, National Key Laboratory of Diesel Engine TurbochargingTechnology, Datong, China 037036;

    China North Engine Research Institute, National Key Laboratory of Diesel Engine Turbocharging Technology, Datong, China 037036;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料一般性问题;
  • 关键词

    Reliable life; turbine wheel; over-speed failure; reliability; turbocharger;

    机译:可靠寿命;涡轮;超速故障;可靠性;涡轮增压器;

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