Component of a flow machine, with inspection aperture

Abstract

The present invention relates to a component of a flow machine, in particular a gas turbine, which has cooling channels ( 4 ) for a cooling medium and also at least one inspection aperture ( 5 ) through which an inspection of the interior of the component is made possible. The component is distinguished in that the inspection aperture ( 5 ) is arranged and dimensioned such that it simultaneously fulfills the function of a dust discharge aperture for dust or dirt particles contained in the cooling medium. By the combination of a dust discharge aperture with an inspection aperture, a simple inspection function is offered, without having to provide in the component additional apertures affecting efficiency.

1 . Component of a flow machine, in particular a gas turbine, which has cooling channels ( 4 ) for a cooling medium and also at least one inspection aperture ( 5 ) through which an inspection of the interior of the component is made possible, wherein 
 the inspection aperture ( 5 ) is arranged and dimensioned such that it forms a dust discharge aperture for dust or dirt particles contained in the cooling medium.    
     
     
         2 . Component according to  claim 1 , wherein the inspection aperture ( 5 ) is dimensioned such that it makes possible the introduction of a borescope.  
     
     
         3 . Component according to  claim 1  or  2 , wherein it is constituted as a rotating blade for a turbine, the inspection aperture ( 5 ) being arranged in the neighborhood of the blade tip.  
     
     
         4 . Component according to  claim 3 , wherein the inspection aperture ( 5 ) runs approximately parallel to the machine axis.  
     
     
         5 . Component according to  claim 3 , wherein the inspection aperture ( 5 ) is arranged at the blade tip and runs in a radial direction.  
     
     
         6 . Process for the inspection and/or cleaning of the interior of a component, embodied according to patent  claim 1 , of a flow machine, in particular a gas turbine, wherein 
 an inspection and/or cleaning tool is introduced through the inspection or dust discharge aperture, and an inspection and/or cleaning of the interior of the component is carried out with the inspection and/or cleaning tool.    
     
     
         7 . Process according to  claim 6 , wherein a borescope is used as the inspection tool.