STEAM AND GAS PLANT WITH COMBUSTION CHAMBERS OF TWO PRESSURES Russian patent published in 2013 - IPC F02C6/02 

FIELD: power engineering.

SUBSTANCE: steam and gas plant with combustion chambers of two pressures comprises a gas turbine engine with two combustion chambers of low and high pressure and at least with two serially arranged gas turbines along gas motion, and also a recovery steam generator and a low pressure compressor. The second of the turbines at the inlet by gas is communicated with the outlet of the low pressure combustion chamber by gas. The compressor is communicated at the outlet by air with the inlet of the low pressure combustion chamber by working medium. The steam and gas plant comprises a recuperative air heater communicated at the inlet by heating gases with the outlet of the last gas turbine of the gas turbine engine by spent gases. The recovery steam generator comprises a steam reheating section arranged along the gas motion in parallel to the recuperative air heater or downstream. Other sections of the steam generator are arranged along with gas motion downstream the steam reheating section. The low pressure combustion chamber at the inlet by the working medium is communicated with the low pressure compressor outlet by air via a track of the recuperative air heater by air. The second gas turbine at the inlet by gas is communicated with the outlet of the first gas turbine by gas.

EFFECT: higher efficiency of a steam and gas plant.

4 dwg