Patent ID: 7104069
Filing Date: 2006-09-12
Classification: F23D,F23L,F23R

Abstract:
1. The method of providing uniform steam flow to a plurality of fuel nozzle assemblies about a gas turbine engine, said method comprising the steps: a. providing a gas turbine engine having a plurality of combustors and a manifold containing steam; b. providing a plurality of fuel nozzle assemblies, each of said fuel nozzle assemblies having: c. providing a means to flow steam from said manifold to each of said fuel nozzle assemblies; d. determining a first flow rate of steam through each of said fuel nozzle assemblies; e. inserting a meterplate into each of said fuel nozzle assemblies at said steam inlets, each meterplate having a metering hole with an effective flow area that depends on said first flow rate, wherein said metering hole restricts the flow of steam thereby creating a pressure drop and resulting in equivalent steam flow to all nozzle assemblies; f. determining a second flow rate of steam through each of said fuel nozzle assemblies to verify equivalent steam flow to all nozzle assemblies.