SUPERPOSED GAS-TURBINE PLANT WITH HIGHER EFFICIENCY STEAM TURBINE UNIT OF THERMAL POWER STATION Russian patent published in 2006 - IPC F01K13/00 

FIELD: heat power engineering.

SUBSTANCE: invention can be used for creating superposed gas-turbine plants to form steam-gas plants in operating thermal power station by equipping it with higher efficiency steam-turbine units. In proposed steam-turbine units regeneration system of steam turbine is partially bypassed with replacement of steam heating of water in this part of regenerative heat exchangers by gas heating. Steam-turbine unit is made in form of higher efficiency unit with bypass of steam turbine high pressure regeneration and part of heating boiler surfaces. Said bypass with included heating surfaces is arranged in convection gas conduit and is connected by its inlet part to part of high-pressure duct of said steam boiler of corresponding parameters. Gas heater of condensate of steam-turbine unit can be installed additionally in separate convection gas conduit in direction of gas flow after surfaces bypassing high pressure regeneration.

EFFECT: simplified design and control of plant, reduced overall dimensions and weight of heating surfaces of separate convection gas conduit at increased power rating of steam-turbine plants.

2 cl, 1 dwg