Patent ID: 11873723
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A steam turbine plant comprising:
a boiler configured to generate steam;
a steam turbine configured to be driven by the steam from the boiler;
a condenser configured to convert the steam exhausted from the steam turbine to water;
a condensate pump configured to raise a pressure of the water from the condenser;
a main steam line configured to guide the steam generated in the boiler to the steam turbine;
a steam stop valve provided in the main steam line and configured to stop an inflow of the steam into the steam turbine;
a bypass line branched from a position closer to the boiler than the steam stop valve in the main steam line is and connected to the condenser;
a bypass valve provided in the bypass line;
a condensate line configured to guide the water inside the condenser to the condensate pump;
a condensate outlet valve provided in the condensate line;
a water supply line configured to guide the water whose pressure is raised by the condensate pump to the boiler;
a pure water supply apparatus including
a pure water tank configured to store pure water,
a pure water line configured to guide the pure water inside the pure water tank to the condenser,
a pure water pump provided in the pure water line, and
a pure water control valve provided closer to the condenser than the pure water pump in the pure water line is;

a first connection unit branched from a position closer to the condenser than the condensate outlet valve in the condensate line is;
a second connection unit branched from a position closer to the condensate pump than the condensate outlet valve in the condensate line is; and
a third connection unit branched from a position closer to the condenser than the pure water pump is and closer to the pure water tank than the pure water control valve in the pure water line is,
wherein the first connection unit has a first connection seat connectable to a first line,
the second connection unit has a second connection seat connectable to a second line, and
the third connection unit has a third connection seat connectable to the second line.