Combustion chamber of a gas turbine with improved acoustic damping

Abstract

A combustion chamber of a gas turbine includes an optimized arrangement of acoustic dampers.

1 . A chamber of a gas turbine comprising several acoustic dampers circumferentially arranged around an opening of the chamber, wherein in one section of the chamber covering an angle (α) of 60° at least two acoustic dampers are arranged. 
     
     
         2 . The chamber according to  claim 1 , wherein in one section of the chamber covering an angle (α) of 60° at uppermost six acoustic dampers are arranged. 
     
     
         3 . The chamber according to  claim 1 , wherein in one section up to six types of acoustic dampers are arranged. 
     
     
         4 . The chamber according to  claim 1 , wherein in an angle (β) between two adjacent acoustic dampers is equal to or greater than 10°. 
     
     
         5 . The chamber according to  claim 1 , wherein in one section of the chamber at least six burners and uppermost ten burners are arranged. 
     
     
         6 . The chamber according to  claim 1 , wherein the acoustic dampers are selected from a group comprising Helmholtz dampers, half-wave length dampers, quarter-wave length dampers. 
     
     
         7 . The chamber according to  claim 1 , wherein the acoustic dampers comprise one or more damping volumes. 
     
     
         8 . The chamber according to  claim 1 , further comprising a combustion chamber, a mixing chamber, a plenum and/or air channels of a gas turbine.