Patent ID: 9255490
Filing Date: 2016-02-09
CPC Classification: F01D,F02C,F05D

Claim Text:
1. A startup operating method for a gas turbine that supplies combustion gas generated by supplying fuel to a combustor where the fuel is combusted with compressed air compressed at a compressor to a turbine to acquire rotational power and that has an active clearance control ACC system, the method, which is carried out at startup of the gas turbine and in preparation immediately before startup, comprising: a step in which pressurizing means, which is connected to a branching channel branching from a discharge-side channel of the compressor and capable of operating independently from the compressor, introduces and pressurizes a temperature-control medium; a step in which the pressurized temperature-control medium pressurized at the pressurizing means is supplied to a turbine-cooling-medium channel provided in a stationary component of the turbine to raise the temperature of the stationary component with the pressurized temperature-control medium passing through the turbine-cooling-medium channel; and a step in which the pressurized temperature-control medium is guided from the turbine-cooling-medium channel to the discharge-side channel such that the flows are combined.