초록 ▼

A reheat gas and double reheat steam turbine combined cycle is provided in which the outer shell confining the blading of the power turbine and the exhaust portion of the power turbine are cooled with steam extracted from the steam cycle. The coolant steam is extracted from a high pressure steam tur

A reheat gas and double reheat steam turbine combined cycle is provided in which the outer shell confining the blading of the power turbine and the exhaust portion of the power turbine are cooled with steam extracted from the steam cycle. The coolant steam is extracted from a high pressure steam turbine, used to cool the turbine outer shell, readmitted for expansion in the steam turbine, the lower pressure steam is extracted to cool the exhaust portion of the power turbine and readmitted to the steam turbine and condensed.

대표청구항 ▼

A method of producing work by means of a turbomachine comprising a gas compressor and a gas turbine, said gas turbine comprising an outer casing confining the blading thereof, said method comprising; compressing ambient air in said gas compressor, igniting said compressed air in a combustor to form

A method of producing work by means of a turbomachine comprising a gas compressor and a gas turbine, said gas turbine comprising an outer casing confining the blading thereof, said method comprising; compressing ambient air in said gas compressor, igniting said compressed air in a combustor to form a heated gas, expanding said heated gas through the blading of said gas turbine, heating said outer casing before start up of said turbomachine to thermally expand said outer casing and increase the tip clearance between said blading and said casing, cooling said outer casing during expansion of said heated gas through the blading of said turbine to control the tip clearance between said casing and said blading and heating said outer casing and thermally expanding said outer casing after trip out of said gas turbine to prevent the blade tips from rubbing said casing during coast down.