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高速压气机
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  high speed compressor
     THE STUDY ON THE ACOUSTIC MEASUREMENT TECHNOLOGY OF INSTABLE FLOW IN THE HIGH SPEED COMPRESSOR
     高速压气机不稳定流动声测量技术研究
短句来源
  相似匹配句对
     THE STUDY ON THE ACOUSTIC MEASUREMENT TECHNOLOGY OF INSTABLE FLOW IN THE HIGH SPEED COMPRESSOR
     高速压气机不稳定流动声测量技术研究
短句来源
     High speed optical modulators
     高速光调制器
短句来源
     HIGH-SPEED DYNAMIC BALANCING OF MULTI-STAGE ROTOR OF COMPRESSOR
     多级离心压气机转子的高速动平衡
短句来源
     High-speed Filtration Equipment
     高速过滤装置
短句来源
     The Heat Treatment to Compressor Blade
     压气机叶片的热处理
短句来源
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  high speed compressor
Results for a five stage high speed compressor are analyzed in detail, and comparison with the experimental data demonstrates that the model and calculating results are reliable.
      
Unsteady rotor-stator interaction in high speed compressor and turbine stages
      
Typical single stage high speed compressor construction is shown in Figure 5.
      


Eecently intense vibration of some compressors have occured in thirteen imported large fertilizer plants and several home-made chemical plants, that affects the normal operation seriously. By a number of tests, this paper presents that the running speeds of such compressor rotor is considerably high and near the second critical speed, the mixed vibration of second and third mode will thus be generated. The conventional stage by stage low speed balancing method is useless in such cases. These rotors must be balanced...

Eecently intense vibration of some compressors have occured in thirteen imported large fertilizer plants and several home-made chemical plants, that affects the normal operation seriously. By a number of tests, this paper presents that the running speeds of such compressor rotor is considerably high and near the second critical speed, the mixed vibration of second and third mode will thus be generated. The conventional stage by stage low speed balancing method is useless in such cases. These rotors must be balanced by mass-set modal method at high speed. It has proved that after high speed balancing they would be able to run stably over the range of all running speeds.

近年来国内引进的十三套大型化肥设备及某些国产大型化工流程中的压气机.有不少型号发生了强烈的机组振动,以致严重地影响了正常生产.作者通过大量的试验实践,认为这些高速压气机转子工作转速都很高,位于第二临界转速左右,转子在工作转速范围内将发生二三阶的混合振型的振动,传统的逐级低速平衡法已无效用,必须进行高速动平衡.实践证明,这种转子经高速平衡后能够在全转速范围内达到平稳地运转.

This paper presents in detail a method for measuring high subsonic two dimensional periodic flow field with a single hole cylindrical pressure probe with high frequency response.The method normalizes the probe calibration curves at different Mach number and simplifies the compressibility correction.The probe is set in nine azimuthal angles while measuring the flow.Sampled and averaged data are used to determine flow angles by least square fitting,...

This paper presents in detail a method for measuring high subsonic two dimensional periodic flow field with a single hole cylindrical pressure probe with high frequency response.The method normalizes the probe calibration curves at different Mach number and simplifies the compressibility correction.The probe is set in nine azimuthal angles while measuring the flow.Sampled and averaged data are used to determine flow angles by least square fitting, Mach number and stagnation pressure are then obtained from solving a set of non linear equations.The method has been successfully applied to measuring the rotor exit flow field in a multistage compressor with high accuracy.

本文详细介绍了作者发展的圆柱单孔高频压力探针测量高亚音速二维周期性流场的方法。该方法简化了压缩性影响的修正 ,测量时置探针于九个方位角。它已被成功地应用于单、多级高速压气机转子出口流场的测量

Compressor rotors are usually balanced' step by step' in manufacturing at first and would be bal-anced at running speed after assembly, However it will be rather difficult for the users. Damage ofcompressor rotors occurs sometimes over long period of oporation. If damage is not so serious, userscan repair it by themselves. But, if high speed balancing is a 'must', the rotor will have to be trans-ported back to the manufacturer, it is very expansive and much trouble. Therefore usere have beentrying to balance...

Compressor rotors are usually balanced' step by step' in manufacturing at first and would be bal-anced at running speed after assembly, However it will be rather difficult for the users. Damage ofcompressor rotors occurs sometimes over long period of oporation. If damage is not so serious, userscan repair it by themselves. But, if high speed balancing is a 'must', the rotor will have to be trans-ported back to the manufacturer, it is very expansive and much trouble. Therefore usere have beentrying to balance this kind of rotore with low speed balancing machine, but runnins state of rotors hasnot been so satisfactory due to the use of ordinary two-plane low speed balancing.The author presents in this paper a methed which will greatly enhance the reliability of low speedbalancins for high sed rotors through years of his research work and practice.This method is built on the basis of theoretical analysis of flexible rotor balancing. Using a calcu-lation of errors we can select the suitable location of each correction plane. An important point is thatthe unbalance on thrust disk or coupling must be corrected using its own plane. Author is sure that thismethod will bring a great interest to users.

本文对高速压气机转子提出了一个多平面的低速动平衡方法,其中通过误差分析可以指导校正面的选择及平衡的工艺过程。经实践验证,这个方法是可行,能使转子高速运转平稳。

 
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