Gas turbine having cooling insert

Abstract

A gas turbine including a plurality of rotor blades assembled into rotor blade rows and arranged on a turbine shaft and including a plurality of guide vanes assembled into guide van rows and mounted on a turbine housing by means of a guide van carrier is provided. The guide vane carrier includes a plurality of cooling air holes, and has a particularly high efficiency, while maintaining maximum operating reliability. Therefore, a cooling insert is introduced into a cooling air hole.

1 .- 8 . (canceled) 
     
     
         9 . A gas turbine, comprising:
 a plurality of rotor blades;   a plurality of stator blades;   a turbine shaft;   a turbine casing;   a stator blade carrier; and   a cooling insert,   wherein the plurality of rotor blades are assembled to form rotor blade rows and are arranged on the turbine shaft, and   wherein the plurality of stator blades are assembled to form stator blade rows and are fastened on the turbine casing by means of the stator blade carrier,   wherein the stator blade carrier includes a plurality of cooling air holes, and   wherein a cooling insert, which is of tubular design and is equipped with a plurality of wall openings arranged in a tube wall, is introduced into at least one cooling air hole for the tube wall cooling.   
     
     
         10 . The gas turbine as claimed in  claim 9 , wherein the plurality of wall openings are separated from each other by means of a plurality of ribs. 
     
     
         11 . The gas turbine as claimed in  claim 9 , wherein the respective cooling insert comprises a turbulator. 
     
     
         12 . The gas turbine as claimed in  claim 9 , wherein the plurality of wall openings are formed as impingement cooling holes. 
     
     
         13 . The gas turbine as claimed in  claim 9 , wherein the respective cooling insert comprises screw thread-like structures. 
     
     
         14 . The gas turbine as claimed in  claim 9 , wherein the respective cooling insert is produced from the same material as the stator blade carrier. 
     
     
         15 . The gas turbine as claimed in  claim 9 , wherein a cooling air feed to the plurality of cooling air holes is adapted to the cooling characteristics of the respective cooling insert. 
     
     
         16 . A gas and steam turbine plant, comprising:
 a gas turbine, comprising:
 a plurality of rotor blades, 
 a plurality of stator blades, 
 a turbine shaft, 
 a turbine casing, 
 a stator blade carrier, and 
 a cooling insert, 
   wherein the plurality of rotor blades are assembled to form rotor blade rows and are arranged on the turbine shaft, and   wherein the plurality of stator blades are assembled to form stator blade rows and are fastened on the turbine casing by means of the stator blade carrier,   wherein the stator blade carrier includes a plurality of cooling air holes, and   wherein a cooling insert, which is of tubular design and is equipped with a plurality of wall openings arranged in a tube wall, is introduced into at least one cooling air hole for the tube wall cooling.   
     
     
         17 . The gas and steam turbine plant as claimed in  claim 16 , wherein the plurality of wall openings are separated from each other by means of a plurality of ribs. 
     
     
         18 . The gas and steam turbine plant as claimed in  claim 16 , wherein the respective cooling insert comprises a turbulator. 
     
     
         19 . The gas and steam turbine plant as claimed in  claim 16 , wherein the plurality of wall openings are faulted as impingement cooling holes. 
     
     
         20 . The gas and steam turbine plant as claimed in  claim 16 , wherein the respective cooling insert comprises screw thread-like structures. 
     
     
         21 . The gas and steam turbine plant as claimed in  claim 16 , wherein the respective cooling insert is produced from the same material as the stator blade carrier. 
     
     
         22 . The gas and steam turbine plant as claimed in  claim 16 , wherein a cooling air feed to the plurality of cooling air holes is adapted to the cooling characteristics of the respective cooling insert.