| 摘要 |
PURPOSE:To increase the efficiency of energy generation by placing fluid pressure under control of a fluid pressure controller when a turbine is stopped and, on the contrary, sending the entire amount of fluid, which is discharged from a pressure source, to the turbine so as to drive a variable stator blade by a control signal when the turbine is under operation. CONSTITUTION:To recover the power of a blast furnace exhaust gas efficiently, the flow rate of exhaust gas which passes through a pressure regulation valve 7 is minimized while the flow rate thereof which is to be sent to a recovery turbine 13 via a regulation valve 12 is increased as much as possible. A control signal is applied to a variable stator blade 15 to regulate the flow rate, whereby reducing the pressure loss at the regulation valve 12 to the possible minimum level. Any variation of flow rate of exhaust gas superceeding the extent to which the variable stator blade 15 can control, may be covered by activating the regulation valve 12 or the pressure regulation valve 7. |
