发明授权
- 专利标题: Gas turbine cooling blade
- 专利标题(中): 燃气轮机冷却叶片
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申请号: US09242330申请日: 1999-02-11
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公开(公告)号: US06196798B1公开(公告)日: 2001-03-06
- 发明人: Hiroki Fukuno , Yasuoki Tomita , Shigeyuki Maeda , Yukihiro Hashimoto , Kiyoshi Suenaga
- 申请人: Hiroki Fukuno , Yasuoki Tomita , Shigeyuki Maeda , Yukihiro Hashimoto , Kiyoshi Suenaga
- 优先权: JP9-155124 19970612
- 主分类号: F01D518
- IPC分类号: F01D518
摘要:
A number of air-transpiration holes (4) are provided at a leading edge portion (2) of a cooled blade (1). Cooling air flowing through a cooling air passage (15) formed inside of the blade blows out to the blade surface of the leading edge portion (2) of the cooled blade (1) by way of the air-transpiration holes (4), to thereby shower-head cool the surface of the leading edge portion (2). The air-transpiration holes (4) are formed so as to extend substantially orthogonal to the leading edge surface of the cooled blade (1) such that the acute-angled portions are eliminated, whereby thermal stress is reduced and cracking is prevented.