Bottle - Antofagasta having improved cooling other structures - Others - Binro

摘要

By easy pre-rotation of the nozzle [Abstract] Disclosed is manufactured to provide a gas turbine to increase the cooling effect of the turbine rotor by reducing the pressure loss of the cooling air. The apparatus includes a compressor 2 for compressing air, a turbine to extract a combustor 3 to be combusted by mixing the fuel F to the compressed air A from the compressor 2, the power from the combustion gas G from the combustor 3 The gas turbine 1 with a 4 I constructed as follows. The pre-rotation nozzle 37 at rest is provided, for the pre-rotation of the nozzle 37 of the turbine 4 rotor 13A, and supplies the cooling air CA to pivot in the direction of rotation of the rotor 13A. In the pre-rotation nozzle 37, the cooling air C Toward the entrance of the A to the outlet to form a conical nozzle holes 39 passage width is narrowed, thereby to make the pressure loss of the cooling air CA at the inlet of the nozzle hole 39 is reduced, and the cooling air CA with respect to the rotor 13A the relative total temperature T _rel I be low.