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1. 发明授权

US09759069B2 Turbine blade 有权
公开(公告)号：US09759069B2
公开(公告)日：2017-09-12
申请号：US14291104
申请日：2014-05-30
申请人： IHI Corporation
发明人： Kozo Nita , Yoji Okita , Chiyuki Nakamata , Kazuo Yonekura , Seiji Kubo , Osamu Watanabe
IPC分类号： F01D5/18 , F01D9/06
CPC分类号： F01D5/18 , F01D5/186 , F01D9/065 , F05D2250/294 , F05D2250/324 , F05D2260/202 , F23R2900/03041 , F23R2900/03043
摘要： The present invention is a turbine blade (1) having a hollow blade body (2). This turbine blade (1) is provided with: cooling air holes (5) that penetrate the blade body (2) from an internal wall surface (2e) to an external wall surface (2f) thereof, and are provided with a straight tube portion (5a) that is located on the internal wall surface (2e) side of the blade body (2), and an expanded diameter portion (5b) that is located on the external wall surface (2f) side of the blade body (2); and with a guide groove (6) that is located on an internal wall of the expanded diameter portion (5b) and that guides cooling air (Y) in the expanded diameter portion (5).

2. 发明授权

US09546553B2 Film cooling structure and turbine blade 有权
标题翻译：薄膜冷却结构和涡轮叶片
公开(公告)号：US09546553B2
公开(公告)日：2017-01-17
申请号：US14265897
申请日：2014-04-30
申请人： IHI Corporation
发明人： Yoji Okita , Chiyuki Nakamata , Seiji Kubo , Osamu Watanabe
IPC分类号： F01D5/18 , F01D9/04 , F02C7/12 , F23R3/06
CPC分类号： F01D5/186 , F01D9/041 , F02C7/12 , F05D2240/303 , F05D2260/202 , F23R3/06 , F23R2900/03042
摘要： The film cooling structure includes: a wall surface along which a heating medium flows; and at least one pair of film cooling holes that open at the wall surface and that blow a cooling medium. The pair of film cooling holes are arranged to be adjacent to each other in a main flow direction of the heating medium. In addition, perforation directions of the pair of film cooling holes are set such that directions of swirls of the cooling medium formed by blowing are opposite to each other, a swirl of the cooling medium on a downstream side in the main flow direction is mixed and merged with another swirl of the cooling medium on an upstream side in the main flow direction, and the merged cooling medium flows along the wall surface in a direction intersecting with the main flow direction.
摘要翻译：薄膜冷却结构包括：加热介质流过的壁面; 以及至少一对薄膜冷却孔，其在壁表面处开口并吹送冷却介质。一对薄膜冷却孔在加热介质的主流动方向上彼此相邻配置。此外，一对膜冷却孔的穿孔方向被设定为使得由吹塑形成的冷却介质的涡流方向相反，主流动方向下游侧的冷却介质的涡流混合，在主流动方向的上游侧与冷却介质的另一涡旋合流，并且合流冷却介质沿着与主流动方向相交的方向沿壁面流动。

3. 发明授权

US10060265B2 Turbine blade 有权
公开(公告)号：US10060265B2
公开(公告)日：2018-08-28
申请号：US14301577
申请日：2014-06-11
申请人： IHI Corporation
发明人： Kozo Nita , Yoji Okita , Chiyuki Nakamata , Kazuo Yonekura , Seiji Kubo , Osamu Watanabe
IPC分类号： F01D5/18 , F01D9/06
CPC分类号： F01D5/18 , F01D5/186 , F01D9/065 , F05D2240/81 , F05D2250/21 , F05D2250/23 , F05D2260/202 , F05D2260/2212 , F23R2900/03042 , F23R2900/03043 , F23R2900/03045
摘要： The cooling effectiveness of a turbine blade that a gas turbine engine or the like is provided with is further increased by providing a convex portion that is arranged in the inner portion of a cooling air hole and that is provided projecting out from the inner wall surface of the cooling air hole.

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