Steam turbine plant and driving method thereof, including superheater, reheater, high-pressure turbine, intermediate-pressure turbine, low-pressure turbine, condenser, high-pressure turbine bypass pipe, low-pressure turbine bypass pipe, and branch pipe
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United States of America Patent
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May 31, 2016
Grant Date -
Jun 19, 2014
app pub date -
Feb 19, 2014
filing date -
Aug 30, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A steam turbine plant includes: a superheater; a reheater; a high-pressure turbine; an intermediate-pressure turbine; a low-pressure turbine; a condenser; a bypass pipe that branches off a main steam pipe and includes a high-pressure turbine bypass valve; a bypass pipe that branches off a high-temperature reheat steam pipe, is connected to the condenser, and includes a low-pressure turbine bypass valve; and a branch pipe that branches off a low-temperature reheat steam pipe, is connected to the condenser, and includes a ventilator valve. At the time of turbine start up, the ventilator valve, the high-pressure turbine bypass valve, and the low-pressure turbine bypass valve are fully opened to allow steam to be circulated simultaneously into the high-pressure turbine and the intermediate-pressure turbine.
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