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Turbomachine turbines with blade inserts having resonant frequencies that are adjusted to be different, and a method of adjusting the resonant frequency of a turbine blade insert

机译:具有具有被调节为不同的共振频率的叶片插入件的涡轮机涡轮机,以及调节涡轮叶片插入件的共振频率的方法

摘要

In a moving turbine wheel, blade inserts are used with at least two blades interconnected by common outer and inner platforms and sharing a common root. The blade inserts have hollow roots in which respective recesses are formed, and the insert roots belonging to the same wheel and/or two different wheels are voluntarily given different configurations in order to adjust the resonant frequencies of the inserts to values that are significantly different, thereby ensuring that the inserts in the same wheel and/or between two different wheels are out of tune.
机译:在运动的涡轮机叶轮中,叶片插入件与至少两个叶片一起使用,该至少两个叶片通过共同的外部和内部平台互连并具有共同的根部。叶片嵌件具有空心的根部,在该空心的根部中形成有相应的凹部,并且属于同一轮和/或两个不同的轮的嵌件根部被自愿赋予不同的配置,以便将嵌件的共振频率调整为明显不同的值,从而确保同一轮和/或两个不同轮之间的刀片不匹配。

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