Anti-Erosion shield for rotor blades

Abstract

A rotor blade for a turbomachine, particularly a steam turbine is provided. The rotor blade includes a turbine blade and a blade base, wherein the turbine blade has a suction side and a pressure side, as well as an inflow edge and an outflow edge, wherein an erosion protection shield is disposed at a distance in front of the outflow edge in order to avoid liquid impingement erosion.

1 - 17 . (canceled) 
     
     
         18 . A rotor blade, comprising:
 a main blade part, comprising:
 a first suction side, 
 a first pressure side, 
 a leading edge, and 
 a trailing edge; 
   a blade root; and   an anti-erosion shield,   wherein an anti-erosion shield is arranged in front of the trailing edge in order to prevent drop impingement erosion, and   wherein the anti-erosion shield is spaced apart from the trailing edge.   
     
     
         19 . The rotor blade as claimed in  claim 18 , wherein the anti-erosion shield is oriented along a longitudinal orientation of the main blade part. 
     
     
         20 . The rotor blade as claimed in  claim 18 ,
 wherein the rotor blade includes a first length, and   wherein a second length of the anti-erosion shield is 1% to 100% of the first length.   
     
     
         21 . The rotor blade as claimed in  claim 18 ,
 wherein the main blade part has a chord length, and   wherein a width of the anti-erosion shield is 5% to 75% of the chord length.   
     
     
         22 . The rotor blade as claimed in  claim 18 , wherein the anti-erosion shield is arranged in front of the suction side. 
     
     
         23 . The rotor blade as claimed in  claim 18 , wherein the anti-erosion shield is connected to the blade root in a nonpositively locking manner. 
     
     
         24 . The rotor blade as claimed in  claim 18 , wherein the anti-erosion shield is integrally connected to the blade root. 
     
     
         25 . The rotor blade as claimed in  claim 18 , wherein the anti-erosion shield is connected to the blade root in a positively locking manner. 
     
     
         26 . The rotor blade as claimed in  claim 18 , wherein the anti-erosion shield and the rotor blade are formed as a single, integral component. 
     
     
         27 . The rotor blade as claimed in  claim 18 ,
 wherein the anti-erosion shield includes a rear edge and a front edge, and   wherein the rear edge protrudes beyond the trailing edge.   
     
     
         28 . The rotor blade as claimed in  claim 18 , wherein the anti-erosion shield includes a rectangular or triangular profile, as seen in cross section, in the longitudinal orientation. 
     
     
         29 . The rotor blade as claimed in  claim 18 , wherein the anti-erosion shield includes a turbine profiling with a second suction side and a second pressure side. 
     
     
         30 . The rotor blade as claimed in  claim 18 , wherein the anti-erosion shield is formed from an erosion-resistant material and is selected from the group consisting of stellite, Ultimet, α-titanium or β-titanium and hardened steel. 
     
     
         31 . The rotor blade as claimed in  claim 18 ,
 wherein the anti-erosion shield includes a dovetail root, and   wherein the blade root is designed to receive the dovetail root.   
     
     
         32 . The rotor blade as claimed in  claim 18 , wherein the anti-erosion shield curves around the longitudinal orientation. 
     
     
         33 . The rotor blade as claimed in  claim 18 , wherein the anti-erosion shield includes support fins to be supported on the rotor blade. 
     
     
         34 . A rotor for a turbomachine, comprising:
 a plurality of rotor blades,   wherein an anti-erosion shield is secured directly on the rotor.