Turning guide for combustion fuel nozzle in gas turbine and method to turn fuel flow entering combustion chamber

摘要

A fuel nozzle assembly for a gas turbine, the assembly including: a cylindrical center body; a cylindrical shroud coaxial with and extending around the center body, and a turning guide having an downstream edge extending in a passage between the center body and an inlet to the shroud, wherein the turning guide extends only partially around the center body.

主权项

1. A fuel nozzle assembly for a combustion chamber in a gas turbine, the assembly chamber comprising:
an end cover assembly; fuel nozzle assemblies arranged around a center of the end cover assembly, wherein each fuel nozzle assembly includes: a center body; a shroud coaxial with and extending around the center body, and a turning guide having a downstream edge extending in a passage between the center body and an inlet to the shroud, wherein the turning guide extends only partially around the center body such that there is a semi-circular gap between ends of the turning guide and extending partially around the center body, wherein the fuel nozzle assembly is centered radially outward of an axis of the combustion chamber, the turning guide is positioned outward of the center body along a radial line extending from the axis, and the semi-circular gap is inward of the center body along the radial line extending from the axis.