| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a system capable of cooling a slush face of a turbine bucket platform down to such temperature level that causes no oxidation, no creeping, and no low cycle fatigue crack by damping bucket vibration. <P>SOLUTION: In this cooling system, a damper pin 28 arranged in channels aligned in the circumferential direction of the turbine bucket platform slush face has a plurality of channels 30 formed in a peripheral part of the pin to let cooling air leaking from the below of the platform flow into a clearance between the platforms. By letting cooling air flow through the channels, the slush face is cooled by convection, the slush face opposing to the channel is cooled by impingement, and flowing-out cooling air purges a clearance between the slush faces adjacent to a high temperature gas flow passage. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
