Patent ID: 8875516
Filing Date: 2014-11-04
Classification: F23D,F23M,F23R

Abstract:
1. A turbomachine combustor comprising: a combustion chamber; a plurality of micro-mixer nozzles mounted to an end cover of the combustion chamber, each micro-mixer nozzle including a fuel supply pipe affixed to a nozzle body located within the combustion chamber, each nozzle body comprising a substantially hollow body formed with an upstream end face, a downstream end face and a peripheral wall extending therebetween, wherein each substantially hollow body is greater in diameter than its respective fuel supply pipe, receives fuel from the respective fuel supply pipe, and is provided with a plurality of pre-mix tubes or passages extending axially through said substantially hollow body, thereby permitting fuel from the supply pipe to mix with air in said nozzle body prior to discharge into said combustion chamber; and wherein at least some nozzle bodies of said plurality of micro-mixer nozzles have axial length dimensions that differ from axial length dimensions of other of said nozzle bodies along an inlet end of the nozzle bodies.