GAS TURBINE EFFICIENCY AND POWER AUGMENTATION IMPROVEMENTS UTILIZING HEATED COMPRESSED AIR AND STEAM INJECTION

摘要

The present invention discloses a novel apparatus and methods for augmenting the power of a gas turbine engine, improving gas turbine engine operation, and reducing the response time necessary to meet changing demands of a power plant. Improvements in power augmentation and engine operation include systems and methods for preheating piping of a power augmentation system and directing flows of hot compressed air, steam or a combination thereof into the gas turbine engine.

主权项

1. A power augmentation system for a gas turbine engine comprising:
a gas turbine engine comprising a compressor coupled to a turbine by a shaft, the compressor and the turbine in fluid communication with one or more combustors through a compressor discharge case; a heat recovery steam generator in fluid communication with the gas turbine engine; steam injection piping connecting the gas turbine engine to the heat recovery steam generator, the steam injection piping further comprising a steam injection valve and an isolation valve; an auxiliary air compression system comprising:
a fueled engine;a multi-stage intercooled compressor coupled to the fueled engine;a recuperator in fluid communication with the multi-stage intercooled compressor and the fueled engine;wherein the recuperator heats air from the multi-stage intercooled compressor with exhaust heat from the fueled engine to produce hot compressed air; and, an air vent and air vent valve in communication with the steam injection piping; wherein the steam injection valve, isolation valve, and air injection valve selectively permit a flow of steam from the heat recovery steam generator or air from the auxiliary air compression system, through the steam injection piping, and to the gas turbine engine.