| 摘要 |
The invention relates to a method for controlling a cooling process of turbine components (8, 10, 12) of a steam turbine shaft, wherein an air flow mixed with a water mist is used to cool the turbine components (8, 10, 12) during a mist cooling phase (P4). In particular, the mist cooling phase (P4) is preceded by an air cooling phase (P3), during which an air flow is used to cool the turbine components. A constant temporal temperature gradient is specified for the cooling process, wherein the air flow density is adjusted by means of the valve position of a controllable regulating valve (26) and a switch is made from the air cooling phase (P3) to the mist cooling phase (P4) if the maximum air flow density is reached and in particular if the regulating valve (26) is fully open. |
