Combustor and a method for repairing a combustor

Abstract

A combustor includes an end cover with a borehole through the end cover. The combustor further includes an insert in the borehole in the end cover and at least one continuous passage through the end cover and the insert. A ring is fixedly connected to the end cover with a seal between the ring and the insert. A method for repairing a combustor includes fixedly connecting a ring to an end cover and installing a replacement insert in the end cover. The method further includes installing a seal between the ring and the replacement insert.

1 . A combustor comprising:
 a. an end cover;   b. a borehole through the end cover;   c. an insert in the borehole in the end cover;   d. at least one continuous passage through the end cover and the insert;   e. a ring fixedly connected to the end cover; and   f. a seal between the ring and the insert.   
     
     
         2 . The combustor as in  claim 1 , wherein the borehole through the end cover is stepped in an axial direction. 
     
     
         3 . The combustor as in  claim 1 , wherein the ring is at least one of brazed or welded to the end cover. 
     
     
         4 . The combustor as in  claim 1 , further comprising a plurality of continuous passages through the end cover and the insert. 
     
     
         5 . The combustor as in  claim 1 , further comprising a nozzle connected to the end cover downstream of the insert. 
     
     
         6 . The combustor as in  claim 1 , further comprising a plurality of rings fixedly connected to the end cover. 
     
     
         7 . The combustor as in  claim 6 , further comprising a seal between each of the plurality of rings and the insert. 
     
     
         8 . A combustor comprising:
 a. an end cover;   b. a nozzle connected to the end cover;   c. an insert between the end cover and the nozzle;   d. at least one continuous passage through the end cover and the insert;   e. a ring fixedly connected to the end cover; and   f. a seal between the ring and the insert.   
     
     
         9 . The combustor as in  claim 8 , further comprising a plurality of nozzles radially arranged in the end cover. 
     
     
         10 . The combustor as in  claim 8 , wherein the ring is at least one of brazed or welded to the end cover. 
     
     
         11 . The combustor as in  claim 8 , further comprising a plurality of continuous passages through the end cover and the insert. 
     
     
         12 . The combustor as in  claim 8 , further comprising a plurality of rings fixedly connected to the end cover. 
     
     
         13 . The combustor as in  claim 12 , further comprising a seal between each of the plurality of rings and the insert. 
     
     
         14 . A method for repairing a combustor comprising:
 a. fixedly connecting a ring to an end cover;   b. installing a replacement insert in the end cover; and   c. installing a seal between the ring and the replacement insert.   
     
     
         15 . The method as in  claim 14 , further comprising removing at least a portion of an original insert from the end cover. 
     
     
         16 . The method as in  claim 14 , further comprising brazing or welding the ring to the end cover. 
     
     
         17 . The method as in  claim 14 , further comprising connecting a nozzle to the end cover downstream of the replacement insert. 
     
     
         18 . The method as in  claim 14 , further comprising fixedly connecting a plurality of rings to the end cover. 
     
     
         19 . The method as in  claim 18 , further comprising installing a seal between each of the plurality of rings and the replacement insert.