Invention Grant
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
- Patent Title: Francis-type hydraulic turbine wheel equipped with a tip-forming member, and method of reducing fluctuations using such a wheel
- Patent Title (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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Application No.: US12920342Application Date: 2009-03-04
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Publication No.: US08894366B2Publication Date: 2014-11-25
- Inventor: Farid Mazzouji , Danièle Bazin , Michel Couston , Claude Beral , Jacques Bremond
- Applicant: Farid Mazzouji , Danièle Bazin , Michel Couston , Claude Beral , Jacques Bremond
- Applicant Address: FR Grenoble
- Assignee: Alstom Renewable Technologies
- Current Assignee: Alstom Renewable Technologies
- Current Assignee Address: FR Grenoble
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: FR0851430 20080305
- International Application: PCT/FR2009/050348 WO 20090304
- International Announcement: WO2009/115729 WO 20090924
- Main IPC: F03B15/02
- IPC: F03B15/02 ; F03B11/04 ; F03B3/02 ; F03B3/12 ; F03B3/10
Abstract:
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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