| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-shaft gas turbine cooling a shaft to a center of a turbine rotor. SOLUTION: This two-shaft gas turbine 1 has a high pressure turbine 10 connected to a compressor 3 and provided with a high pressure turbine rotor 9 rotatively driven by combustion gas 8a, a low pressure turbine 14 connected to a load 11 and provided with a low pressure turbine rotatively driven by combustion gas 8b, and an approximately disc-like pressure bulkhead 40 arranged between the high pressure turbine rotor 9 and the low pressure turbine rotor 13. The pressure bulkhead 40 is provided with an inflow opening 41 arranged on the peripheral side of the pressure bulkhead 40 and allowing cooling air to flow into, an outflow opening 42 arranged in the center part of the pressure bulkhead 40, a cooling air channel 43 arranged inside the bulkhead 40 so as to communicate the inflow opening 41 and the outflow opening 42 with each other, a guide vane 44 arranged to section the cooling air channel 43 into two or more in a peripheral direction and introducing cooling air from the inflow opening 41 to the outflow opening 42, and a cone 45 deflecting cooling air in a direction of a turbine rotor shaft. COPYRIGHT: (C)2005,JPO&NCIPI
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