| 摘要 |
PURPOSE:To prevent rise of the pressure at the top of a furnace by furnishing a power plant, working on utilization of the pressure of collected exhaust gas from a blast furnace, with a load limitation citcuit to emit a load limiting signal and a bypass valve dontrol circuit to control the bypass valve in accordance with the load limiting signal. CONSTITUTION:A turbine 3 for drive of the generator 4 is installed on the way of the main pipe 2 leading from a blast furnace 1. A load limitation circuit 6 is furnished in order to emit a load limiting signal a if the load on the generator 4 exceeds a certain specified value. A bypass valve control citcuit 7 controls the bypass valve 5 in accordance with load limiting signals a. Thereby excessive loading on the generator 4 can be prevented. Also the pressure rise at the top of the furnace can be prevented as well as the control system simplified. |
