| 摘要 |
PURPOSE:To warm up a steam turbine speedily with a simple structure, by opening a warm up valve of a partial stop valve out of plural warm-up valved main steam stpp valves, while opening another stop valve too, and warming up a main steam leed pipe and a steam chest of a main steam control valve. CONSTITUTION:Warm-up valves 2a-1 and 2a-2 are installed in each of plural main steam stop valves 2-1 and 2-2 and drain valves 7-1 and 72 are installed in addition. In time of warming up for a turbine, the warm-up valve 2a-2 of the one side main steam control valve 2-2 is opened, while the drain valve 7-1 of the other side main steam control valve 2-1 is also opened. With this constitution, the steam run past the warm-up valve 2a-2 is discharged out of the drain valve 7-1 by way of main steam lead pipes 3-3 and 3-4 and steam chests 4-1 and 4-2 of a main steam control valve, whereby these main steam lead pipes 3-1-3-4 and steam chests 4-1 and 4-2 are speedily warmed up. |
