Method for controlling a cooling process of turbine components
US9422832B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 2012 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Feb 5, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/212
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for controlling a cooling process of turbine components of a steam turbine shaft, wherein an air flow mixed with a water mist is used to cool the turbine components during a mist cooling phase (P4) is provided. 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 the valve position of a controllable regulating valve 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 is fully open.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.