COMBUSTOR APPARATUS IN A GAS TURBINE ENGINE

摘要

A combustor apparatus defining a combustion zone where air and fuel are burned to create high temperature combustion products. The combustor apparatus comprises an outer wall including a fuel inlet opening for receiving a fuel feed pipe. A coupling assembly is engaged with the fuel feed pipe at the fuel inlet opening to attach the fuel feed pipe to the outer wall. A fuel injection system is located in the interior volume of the outer wall and comprises fuel supply structure including a fuel feed block having a fuel intake passage aligned with the outlet portion of the fuel feed pipe. A coupling fastener is engaged against an exterior outer face of the fuel feed block to create a sealed coupling for containing fuel passing from the fuel feed pipe into the fuel feed block, and to secure the fuel feed block relative to the coupling assembly.

主权项

1. A combustor apparatus in a gas turbine engine, the combustor apparatus defining a combustion zone where air and fuel are burned to create high temperature combustion products, the combustor apparatus comprising:
an outer wall including an inner face and an outer face, and defining an interior volume and comprising a fuel inlet opening; a fuel feed pipe that extends through the fuel inlet opening in the outer wall, the fuel feed pipe including an inlet portion and an outlet portion; a coupling assembly comprising:
coupling structure on the outer face of the outer wall adjacent to the fuel inlet opening, the coupling structure comprising a threaded inner coupling portion;a fitting member disposed about and engaged with the inlet portion of the fuel feed pipe and comprising a threaded outer coupling portion, the threaded outer coupling portion being threadedly engaged with the inner coupling portion of the coupling structure to:
create a first sealed coupling with the coupling structure; andsecure the fuel feed pipe relative to the outer wall; a fuel injection system at least partially located in the interior volume of the outer wall and comprising fuel supply structure for providing fuel to at least one fuel injector that delivers fuel to be burned in the combustion zone, the fuel supply structure comprising a fuel feed block, the fuel feed block including:
a fuel intake passage aligned with the outlet portion of the fuel feed pipe; andan exterior surface defining oppositely facing inner and outer faces, the inner face of the fuel feed block being located facing toward the inner face of the outer wall; a coupling fastener engaged against the outer face of the fuel feed block to:
create a second sealed coupling adjacent to the outlet portion of the fuel feed pipe for containing fuel passing from the fuel feed pipe into the fuel feed block; andsecure the fuel feed block relative to the coupling assembly.