| 摘要 |
PROBLEM TO BE SOLVED: To generate a stable flame by changing the boundary conditions of an end face in air column vibration in a combustion chamber to detune the natural frequency of a combustor from the vibration frequency band of the combustion flame when a pressure fluctuation value in the combustion chamber becomes a set value or more. SOLUTION: In this gas turbine combustor, fuel is led to a premixing part of a liner cap and mixed with compressed air to burn in the combustion chamber of a combustor liner, and a cooling medium is allowed to flow into a pressure header formed to surround the premixing part of the liner cap. The cooling medium is uniformly spouted into the combustion chamber from the end face of the pressure header to cool the inner peripheral part of the combustor liner. In this constitution, the opening area of a cooling medium inflow part formed at the pressure header of the liner cap is adjustably formed. COPYRIGHT: (C)2004,JPO
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