Patent ID: 9353650
Filing Date: 2016-05-31
CPC Classification: F01K

Claim Text:
1. A steam turbine plant, comprising: a power generator; a superheater; a high-pressure turbine connected to the superheater via a main steam pipe; a reheater connected to the high-pressure turbine via a low-temperature reheat steam pipe provided with a check valve; an intermediate-pressure turbine connected to the reheater via a high-temperature reheat steam pipe; a low-pressure turbine into which steam exhausted from the intermediate-pressure turbine is introduced; a condenser into which steam exhausted from the low-pressure turbine is introduced; a high-pressure turbine bypass pipe that branches off the main steam pipe, is connected to the low-temperature reheat steam pipe downstream of the check valve bypassing the high-pressure turbine, and is provided with a high-pressure turbine bypass valve; a low-pressure turbine bypass pipe that branches oil the high-temperature reheat steam pipe, is connected to the condenser bypassing the intermediate-pressure turbine and the low-pressure turbine, and is provided with a low-pressure turbine bypass valve; and a branch pipe that branches off the low-temperature reheat steam pipe positioned upstream from the check valve, is connected to the condenser, and is provided with a ventilator valve, the main steam pipe being provided with a main steam stop valve and a steam control valve downstream from a branch portion that branches off the main steam pipe, and an electronic control device programmed to: