STEAM TURBINE PLANT Russian patent published in 2017 - IPC F01K13/00 

FIELD: electricity-producing industry.

SUBSTANCE: steam turbine plant is offered. It comprises the boiler superheater, the main steam lead with the shutting-off device and the discharge line with the mounted on it pressure-reducing and desuperheating station, and the actuating bypass pipe with starting valves. The main steam lead links the superheater to the turbine, which is connected with the capacitor by virtue of the exhaust casing. The discharge line links the main steam lead to the exhaust casing bypassing the shutting-off device and the turbine. Upon that, the solid separators are located on the discharge line previous to the pressure-reducing and desuperheating station and on the actuating bypass pipe previous to the starting valves. The separators arrangement on the discharge steam lead and on the actuating bypass pipe - out of the main steam lead - excludes the pressure losses in the steam circuit in electric and thermal loads generation by the turbine mode, providing the power generating unit high efficiency. The separator presence in the discharge line provides the bigger part of the scale removal during the boiler blow down into the capacitor while the shutting-off device is closed. The second separator presence in the bypass pipe of the shutting-off device, while it is open for the steam supply into the turbine as part of the launching process, provides the scale residue removal from the dead zones of the main steam lead between its junctions to the discharge line and the bypass pipe of the shutting-off device. That prevents the blades and seals abrasive erosion and enhances the service reliability of the power generating unit.

EFFECT: power generating unit functional efficiency and reliability enhancement.

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