High-low pressure integrated steam turbine and its rotor shaft and its manufacturing methods as well as combined power generation system

摘要

The object of the present invention is to provide a combined high pressure integrated steam turbine with blades exceeding 26 inches in the final stage and a combined India power plant and heat resistant steel in combination with the gas turbine. The present invention is a combination of a rotor shaft having a slanting characteristic of a high pressure side of 538 degrees centigrade, a breakdown strength of 12 kg / mm2 for 105 hours and a low pressure side of FATT of 20 degrees Celsius, and a combination of a high pressure integrated steam turbine with the high pressure integrated steam turbine and the gas turbine combined with the same It is in a heat resistant steel with a plant and a specific composition.