发明授权
US08894366B2 Francis-type hydraulic turbine wheel equipped with a tip-forming member, and method of reducing fluctuations using such a wheel
有权
配备有尖端成形构件的弗朗西斯型液压涡轮机,以及使用这种车轮减小波动的方法
- 专利标题: Francis-type hydraulic turbine wheel equipped with a tip-forming member, and method of reducing fluctuations using such a wheel
- 专利标题(中): 配备有尖端成形构件的弗朗西斯型液压涡轮机,以及使用这种车轮减小波动的方法
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申请号: US12920342申请日: 2009-03-04
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公开(公告)号: US08894366B2公开(公告)日: 2014-11-25
- 发明人: Farid Mazzouji , Danièle Bazin , Michel Couston , Claude Beral , Jacques Bremond
- 申请人: Farid Mazzouji , Danièle Bazin , Michel Couston , Claude Beral , Jacques Bremond
- 申请人地址: FR Grenoble
- 专利权人: Alstom Renewable Technologies
- 当前专利权人: Alstom Renewable Technologies
- 当前专利权人地址: FR Grenoble
- 代理机构: Buchanan Ingersoll & Rooney PC
- 优先权: FR0851430 20080305
- 国际申请: PCT/FR2009/050348 WO 20090304
- 国际公布: WO2009/115729 WO 20090924
- 主分类号: F03B15/02
- IPC分类号: F03B15/02 ; F03B11/04 ; F03B3/02 ; F03B3/12 ; F03B3/10
摘要:
This wheel comprises a plurality of vanes (2) arranged on a crown (3) and is equipped with a tip-forming member (10) attached to a central region (32) of the crown or hub of the wheel (1), radially inside the vanes (2), the crown defining a wet surface (31) for guiding a flow (E) passing between the vanes. The tip-forming member (10) is provided with at least one opening (121) for diverting a fraction (E1) of the flow towards the internal volume (V10) of this member. This member comprises a frustoconical annular skirt (11) and at least one fin (15) arranged in its internal volume (V10) and able to modify the path of the flow fraction (E1) entering this volume through the opening (121). This fin (15) extends as far as the edge (112) of the skirt (11) which defines an outlet opening (14) of the member (10) for the flow fraction (E1).
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