发明授权
- 专利标题: Steam turbine stator vane and steam turbine using the same
- 专利标题(中): 蒸汽轮机定子叶片和蒸汽轮机使用相同
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申请号: US13231860申请日: 2011-09-13
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公开(公告)号: US09011084B2公开(公告)日: 2015-04-21
- 发明人: Hideki Ono , Kenichi Murata , Shigeki Senoo , Goingwon Lee
- 申请人: Hideki Ono , Kenichi Murata , Shigeki Senoo , Goingwon Lee
- 申请人地址: JP Kanagawa
- 专利权人: Mitsubishi Hitachi Power Systems, Ltd.
- 当前专利权人: Mitsubishi Hitachi Power Systems, Ltd.
- 当前专利权人地址: JP Kanagawa
- 代理机构: Crowell & Moring LLP
- 优先权: JP2010-216336 20100928
- 主分类号: F01D9/02
- IPC分类号: F01D9/02 ; F01D5/14
摘要:
Suppressing profile loss of a moving blade due to radial flow without an increase in the length of a shaft of a turbine is disclosed. The degree of reaction on an inner circumferential side is set to an appropriate degree, reducing profile loss due to supersonic inflow, and improving turbine efficiency. A steam turbine stator vane has a trailing edge with a curved line when the stator vane is viewed from a downstream side in the axial direction. The curved line has an inflection point located on an outer circumferential side with respect to the center of the stator vane in the height direction of the stator vane. An inner circumferential portion of the curved line is located on the inner circumferential side with respect to the inflection point. An outer circumferential portion of the curved line is located on the outer circumferential side with respect to the inflection point.