| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent drain reaching a manifold portion of an intake air duct from entering a compressor.SOLUTION: An intake air cooling system 100 of a gas turbine 18 includes: an intake air duct 12 introducing intake air taken in from an intake air inlet 22 to a compressor 14 of the gas turbine 18; a cooling portion 26 provided in the intake air duct 12, and cooling the intake air by heat exchange with a cooling medium introduced from an outside; a drain discharge line 102 that is provided in a portion of the intake air duct 12 right under an inlet 14a of the compressor 14, and that can discharge drain flowing along an inner circumferential surface of the intake air duct 12; and a water seal portion 104 provided on the drain discharge line 102, and water-sealing a part of the drain discharge line at least at a water pressure corresponding to a negative pressure near the inlet 14a of the compressor 14.</p> |
