| 摘要 |
PURPOSE:To obtain a safety electric power by driving a furnace pressure recovery turbine by use of remaining furnace gas when an electric power transmission system is interrupted and also a furnace blower is stopped. CONSTITUTION:A furnace blower 2 sends a blast to a furnace 1 through a switch valve 4 and an air-heating furnace 5. When an electric power system is interrupted, a circuit breaker 13 is cut off to stop an electricity supply to a main transmission system 14, and the output of the generator 12 is sent to a safety electric power transmission system 15. A pressure controller 16 fully closes a bypass control valve 8 only when an interrupt signal a and a blast stop signal b are input together. Accordingly, a furnace pressure recovery turbine system 10, 12 is driven by use of remaining furnace gas, and a safety electric power for the furnace 1 can be supplied during this time. |
