| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To achieve a gas turbine with high efficiency, by reducing risk of breakage of a moving blade and the like due to a clearance drop between the moving blade and a casing at high load operation of the gas turbine. <P>SOLUTION: A control device 6 of the gas turbine is applicable to the gas turbine including: a compressor 2 for sucking combustion air to turn it into compressed air; a combustor 3 for injecting fuel into the compressed air sent from the compressor 2 to burn it, thus generating high temperature combustion gas; a turbine 4 positioned at a downstream side of the combustor 3 and driven by the combustion gas exited from the combustor 3; and a cooling air introduction system 5 for allowing a part of compressed air extracted midway from the compressor 2 to be temperature-decreased in a cooling part 9, and guiding the resultant to a high temperature part in the turbine 4. The control device for the gas turbine controls a temperature decreasing function in the cooling part 9 based on a suction flow rate of combustion air for the compressor 2. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
