Patent ID: 9581085
Date: 2017-02-28
CPC Classifications: F01D,F02C,Y02T

Claim:
1. A method of hot streak alignment to improve gas turbine durability, comprising: igniting fuel and air at a combustor having a fuel nozzle thereby creating a hot streak of combustion gas; aiming said hot streak at a leading edge of a stator nozzle vane; providing one or more cooling holes disposed upon said stator nozzle vane adjacent to said leading edge; passing cooling air through said vane and said one or more cooling holes adjacent said leading edge; and, mixing of said combustion gas and cooling air to limit temperature of said combustion gas at downstream components; further comprising: a ratio of vanes to fuel nozzles being at least 2:1 wherein for a 2:1 ratio, the vanes are disposed within the stator nozzle in pairs, the pairs being made up of an aligned vane and a non-aligned vane; the hot streak being directly aimed at the aligned vane, and not directly aimed at the non-aligned vane; and, the step of passing said cooling air through said vane further comprises passing said cooling air through said aligned vane and through said non-aligned vane.