| 摘要 |
In a feed water supply system for a power plant, feed water is supplied into a steam generator to generate steam, the steam is fed to a main turbine to drive an electric generator, and a feed water pump for supplying feed water into the steam generator is arranged so as to be driven by a feed water pump turbine driven with steam. The system is provided with main turbine extraction steam pipings for passage of main turbine extraction steam, high pressure auxiliary steam pipings for passage of high pressure steam, and low pressure auxiliary steam pipings for passage of low pressure steam, as pipings for steam supply for driving the feed water pump turbine. The feed water pump turbine is driven at a time of normal starting of the plant through switching from the low pressure auxiliary steam pipings to the main turbine extraction steam pipings, and the feed water pump turbine is driven at a time of rapid restarting of the plant after stopping of the electric generator through switching from the high pressure auxiliary steam pipings to the main turbine extraction steam pipings.
|
