| 摘要 |
PURPOSE:To perform warming-up with necessary minimum steam flow by dividing a gas fuel pipe and a gas fuel heating device into plural sections and making operation control of heating devices in respective sections based on gas fuel pressure and temperature of these sections. CONSTITUTION:A piping 5 supplying gas fuel to a combustor 4 and a steam piping 8 laid along the piping 5 and heating gas fuel are divided into plural sections, and pressure detectors 12a-12d and temperature detectors 13a-13d are provided on respective fuel pipings. Steam stop valves 9a-9c and a steam flow regulating valve 11 provided in respective steam pipings 8a-8d corresponding to pressure and temperature signals of gas fuel are operated and controlled to perform necessary minimum heating. Thus warming-up can be made with necessary minimum steam flow. |
