| 摘要 |
PROBLEM TO BE SOLVED: To provide a device using an external fluid to a gas turbine for a process power plant to cool high temperature components of the gas turbine.SOLUTION: An external fluid in a closed loop is used to cool hot gas path components of a gas turbine. After cooling the turbine components, the heated external fluid is dumped either in the compressor discharge casing or in one of the turbine's stages. When the external fluid is nitrogen to be dumped in the turbine compressor's discharge casing, the nitrogen is compressed using diluent nitrogen compressors. Alternatively, when the external fluid is nitrogen to be dumped in one of stages of the turbine, the nitrogen is not compressed at all. The turbine blade heat exchangers in the turbine stages through which the nitrogen passes can be connected in parallel or in series for cooling the hot gas path components in the turbine stages. The nitrogen can optionally be mixed with air or steam or not mixed at all. |
