Abstract: A liner element for a gas turbine combustor having a structural wall with fixing apertures provided therethrough. The liner element has a unitary construction defining a cooling side and combustion side, and a plurality of effusion holes extending between a cooling side surface of the element and a combustion side surface of the element. The liner element is configured to be affixed to the structural wall of a combustor with its cooling side surface spaced from the wall to define a chamber between the cooling side surface and the wall, and the liner element further includes integrally formed and non-threaded protuberances on its cooling side, the protuberances being arranged to engage and extend through respective fixing apertures in the combustor wall. Also disclosed is a method of thermally insulating the liner element.

Abstract: A fuel manifold and fuel injector arrangement has a fuel manifold and at least one fuel injector. The fuel injector has main and pilot fuel nozzles. The fuel manifold has at least one fuel pipe segment and each fuel pipe segment has an outer pipe, an intermediate pipe arranged within the outer pipe and an inner pipe arranged within the intermediate pipe. A thermally insulating medium is provided in a chamber defined between the outer pipe and the intermediate pipe. The chamber between the intermediate pipe and the inner pipe is fluidly connected to a first fuel supply and the chamber within the inner pipe is fluidly connected to a second fuel supply. The at least one pilot fuel nozzle is fluidly connected to the chamber between the intermediate pipe and the inner pipe and the main fuel nozzle is fluidly connected to the chamber within the inner pipe.

Abstract: A combustion chamber comprises an outer wall and an inner wall spaced from the outer wall. The outer wall has at least one mounting aperture extending there-through and the inner wall has threaded studs extending there-from. The threaded studs extend through the mounting apertures in the outer wall. Cooperating nuts locate on the studs and washers are positioned between the outer wall and the cooperating nuts. Each washer has a rim and a bore. The washers have one or more passages extending there-through from the rim to the bore of the washer to provide a flow of coolant through the passages in the washers, the mounting apertures in the outer wall and around the threaded studs to cool the threaded studs to increase the working life of the inner wall. Other cooling arrangements for the threaded studs are disclosed.

Abstract: A liner element for a gas turbine combustor having a structural wall with fixing apertures provided therethrough. The liner element has a unitary construction defining a cooling side and combustion side, and a plurality of effusion holes extending between a cooling side surface of the element and a combustion side surface of the element. The liner element is configured to be affixed to the structural wall of a combustor with its cooling side surface spaced from the wall to define a chamber between the cooling side surface and the wall, and the liner element further includes integrally formed and non-threaded protuberances on its cooling side, the protuberances being arranged to engage and extend through respective fixing apertures in the combustor wall. Also disclosed is a method of thermally insulating the liner element.

Abstract: A fuel manifold and fuel injector arrangement has a fuel manifold and at least one fuel injector. The fuel injector has main and pilot fuel nozzles. The fuel manifold has at least one fuel pipe segment and each fuel pipe segment has an outer pipe, an intermediate pipe arranged within the outer pipe and an inner pipe arranged within the intermediate pipe. A thermally insulating medium is provided in a chamber defined between the outer pipe and the intermediate pipe. The chamber between the intermediate pipe and the inner pipe is fluidly connected to a first fuel supply and the chamber within the inner pipe is fluidly connected to a second fuel supply. The at least one pilot fuel nozzle is fluidly connected to the chamber between the intermediate pipe and the inner pipe and the main fuel nozzle is fluidly connected to the chamber within the inner pipe.

Abstract: A combustion chamber comprises an outer wall and an inner wall spaced from the outer wall. The outer wall has at least one mounting aperture extending there-through and the inner wall has threaded studs extending there-from. The threaded studs extend through the mounting apertures in the outer wall. Cooperating nuts locate on the studs and washers are positioned between the outer wall and the cooperating nuts. Each washer has a rim and a bore. The washers have one or more passages extending there-through from the rim to the bore of the washer to provide a flow of coolant through the passages in the washers, the mounting apertures in the outer wall and around the threaded studs to cool the threaded studs to increase the working life of the inner wall. Other cooling arrangements for the threaded studs are disclosed.