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公开(公告)号：US10954912B2
公开(公告)日：2021-03-23
申请号：US16520925
申请日：2019-07-24
申请人： Voith Patent GmbH
发明人： Stuart Coulson
摘要： A hydraulic machine including a runner of Francis type, a head cover and a lower cover, the runner includes a low and a high pressure side, a crown, a band, and a plurality of blades, the crown having a sealing element to seal the space between the crown and head cover against water from the high-pressure side, whereas the runner has at least one passage to drain high-pressure leakage water passing the sealing element to the low-pressure side, and the passage has an inlet aperture located in a portion of the crown which during operation is exposed to high-pressure leakage water, the passage being located within one of the blades and leads from the inlet aperture to the band, where the passage forms an opening leading to the space between the band and the lower cover.
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公开(公告)号：US11530678B2
公开(公告)日：2022-12-20
申请号：US17040303
申请日：2019-02-28
申请人： Voith Patent GmbH
发明人： Stuart Coulson , Jason Foust , Jesse Zoll , Steven McHale , Jianbo Jiang , Brandon Harmer
摘要： A wicket gate for a hydraulic turbine or pump contains a blade being defined by a pressure surface, an oppositely facing suction surface, a leading edge and a spaced apart trailing edge, a first trunnion, a second trunnion, an air inlet aperture, an air passage and at least one air outlet aperture. The profile of the suctions side surface of the blade along a cross section through a point P1 and a point P2 is concave. Whereas point P1 is located on the suction side surface of the trailing edge where an air outlet aperture is located and point P2 is spaced apart from point P1 by less than 10% of the wicket gate length D and point P2 is located upstream of point P1 on a line perpendicular to the trailing edge starting at point P1.
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公开(公告)号：US20210088022A1
公开(公告)日：2021-03-25
申请号：US17040303
申请日：2019-02-28
申请人： Voith Patent GmbH
发明人： Stuart Coulson , Jason Foust , Jesse Zoll , Steven McHale , Jianbo Jiang , Brandon Harmer
摘要： A wicket gate for a hydraulic turbine or pump contains a blade being defined by a pressure surface, an oppositely facing suction surface, a leading edge and a spaced apart trailing edge, a first trunnion, a second trunnion, an air inlet aperture, an air passage and at least one air outlet aperture. The profile of the suctions side surface of the blade along a cross section through a point P1 and a point P2 is concave. Whereas point P1 is located on the suction side surface of the trailing edge where an air outlet aperture is located and point P2 is spaced apart from point P1 by less than 10% of the wicket gate length D and point P2 is located upstream of point P1 on a line perpendicular to the trailing edge starting at point P1.
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公开(公告)号：US10544774B2
公开(公告)日：2020-01-28
申请号：US16060431
申请日：2015-12-23
申请人： VOITH PATENT GMBH
发明人： Manfred Stummer , Stuart Coulson , Jason Foust
摘要： A runner for a hydraulic turbine or pump has a plurality of blades. Each of the blades is defined by a pressure surface, an oppositely facing suction surface, a leading edge and a spaced-apart trailing edge. At least one of the blades has a device for supplying a flow of oxygen containing gas to the trailing edge of the same blade. The device includes at least two separate gas inlet apertures and at least two separate gas passages, each extending from one of the separate gas inlet apertures to a separate group of orifices in the trailing edge of the same blade. Each of the separate group of orifices has at least one orifice to admit gas out of the corresponding separate gas passage to the passing fluid during the operation of the runner.
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公开(公告)号：US11359595B2
公开(公告)日：2022-06-14
申请号：US17040296
申请日：2019-02-28
申请人： VOITH PATENT GMBH
发明人： Stuart Coulson , Jason Foust , Jesse Zoll , Steven McHale , Jianbo Jiang , Brandon Harmer
摘要： A runner for a hydraulic turbine or pump includes a plurality of blades, each blade being defined by a pressure surface, an oppositely facing suction surface, a leading edge and a spaced apart trailing edge. At least one blade has a device for supplying a flow of oxygen containing gas to the trailing edge of at least one of the blades. The profile of the suction side surface of the blade along a cross section through a point P1 and a point P2 is concave. The point P1 is located on the suction side surface of the trailing edge where an opening is located, the point P2 is spaced apart from the point P1 by less than 3% of the runner outlet diameter D and the point P2 is located upstream of the point P1 on a line perpendicular to the trailing edge starting at the point P1.
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