Blade union of a turbo machine

Abstract

A damping system for damping the vibrations of a blade union is provided. The blades arranged in a neighboring manner are coupled to one another via a coupling element, wherein the coupling element is arranged fixed in a first blade and extends into the second blade, wherein the coupling element is not arranged in the second blade but rather solely contacts there such that, as a consequence of centrifugal forces, a free end of the coupling element presses against the second blade and a friction force thus occurs, leading to an energy dissipation and vibrations being thus damped.

1 .- 4 . (canceled) 
     
     
         5 . An arrangement, comprising:
 a first blade;   a second blade which is arranged adjacent to the first blade;   a coupling element,   wherein the coupling element is fixedly arranged in the first blade and a part of the coupling element butts against the second blade,   wherein the first blade includes a first blade tip,   wherein the second blade includes a second blade tip,   wherein the coupling element is arranged in a region of the first and second blade tip,   wherein the first blade tip includes a first shroud and the coupling element is arranged in the first shroud,   wherein the second blade tip includes a second shroud and the coupling element is arranged in the second shroud,   wherein the first shroud and the second shroud include in each case a slot in which the coupling element is arranged, and   wherein the slot is arranged at a side in the first shroud and in the second shroud.   
     
     
         6 . The arrangement as claimed in  claim 5 , wherein the coupling element is of a longish and narrow design. 
     
     
         7 . The arrangement as claimed in  claim 5 , wherein the coupling element is a plate. 
     
     
         8 . The arrangement as claimed in  claim 5 ,
 wherein the coupling element includes a rectangular shape, as seen in cross section, with a width and a height, and   wherein the width is greater than the height and the coupling element is arranged in the shroud in such a way that a surface with the width butts against the shroud during operation.   
     
     
         9 . The arrangement as claimed in  claim 7 ,
 wherein the coupling element includes a rectangular shape, as seen in cross section, with a width and a height, and   wherein the width is greater than the height and the coupling element is arranged in the shroud in such a way that a surface with the width butts against the shroud during operation.   
     
     
         10 . The arrangement as claimed in  claim 5 , wherein the coupling element is fixedly connected to the first shroud.