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本文介绍了用激光全息时间平均法证实大刚度的调节级叶片的叶根参与振动的现象,较详细地分析研究了具有菌型叶根的调节级叶片振动初始截面与装配质量、工作状态以及振型的关系。分析指出,对于此类叶片,叶根参与振动的现象是严重的。不同的振型其叶根参与振动的程度也不同。在某些装配条件下,叶片振动的初始截面可能延伸至最下面一对叶根齿。本试验研究结果用于化工部锦西化工机械厂改型设计的KT1501型工业汽轮机调节级叶片中,经该机组投产运行,证实是可靠的,
In this paper, the phenomenon that the root of the control blade with large stiffness is confirmed by the laser holographic time-average method is involved in the vibration. The initial cross-section of the vibration of the control blade with the fungus-shaped root and the assembly quality, working condition and vibration are analyzed in detail. Type of relationship. Analysis pointed out that, for such leaves, leaf root involvement in the phenomenon of vibration is serious. Different modes of vibration take part in the vibration of the root is also different. Under some assembly conditions, the initial cross-section of the blade vibration may extend to the bottom pair of blade root teeth. The results of this study are used in the KT1501 industrial steam turbine governing blade modified by the Jinxi Chemical Machinery Factory of the Ministry of Chemical Industry. After the unit is put into operation, it is proved to be reliable,