公开(公告)号：US12196169B2

公开(公告)日：2025-01-14

申请号：US18022890

申请日：2021-08-30

Applicant: Pauli Harila

Inventor： Jarkko Maatta ,  Pauli Harila

IPC: F03B11/00 ,  F03B11/04 ,  F03B15/16

Abstract: A hydro turbine of a hydroelectric power plant operates with reduced cavitation at low power levels. A using at least one motion sensor coupled to a rotor of the hydro turbine, during operation of the hydro turbine is used to generate at least one metric indicative of an effect of cavitation on the hydro turbine. The metric is used by an automated governing system to change the operation of the hydro turbine to reduce cavitation.

公开(公告)号：US12037975B2

公开(公告)日：2024-07-16

申请号：US18356077

申请日：2023-07-20

Applicant: Voith Patent GmbH

Inventor： Björn Hübner

IPC: F03B3/12 ,  F03B11/04

CPC classification number: F03B3/125 ,  F03B11/04

Abstract: A hydraulic machine of the Francis-type includes: an impeller with blades; a guide vane assembly with a ring of guide vanes, a vane-free space extending between the impeller and the guide vane assembly; and at least three resonators for suppressing pressure fluctuations, the resonators respectively including a chamber and a tube connector, the tube connector being connected to the chamber, the tube connector including an end that faces away from the chamber and that opens into the vane-free space, the resonators being configured for suppressing the pressure fluctuations occurring during the operation of the hydraulic machine, the resonators being arranged at a uniform distance from each other in a circumferential direction around the impeller, and the resonators being adjusted to a resonant frequency which is one and the same relative to one another.

公开(公告)号：US20210388808A1

公开(公告)日：2021-12-16

申请号：US17295471

申请日：2019-11-20

Applicant: GE Renewable Technologies

Inventor： Laurent Bornard ,  David Allan Scott ,  Guillaume Boutet-Blais

IPC: F03B11/04 ,  F03B3/00

Abstract: The invention concerns a hydraulic turbine comprising blades (2) fixed to a runner crown (12) and to be actuated in rotation around an axis of rotation, each blade being comprised between a leading edge (8) and a trailing edge (10), a stationary head cover (14) and a chamber (16) being located between said runner crown (12) and said head cover (14) or within the head cover, said runner further comprising: means (22) forming at least one passage for water between said chamber and a chamber (28) in the runner tip; an upper portion (121) and a lower portion (122) of the said runner crown, said upper portion (121) having a larger diameter than said lower portion (122) so as to define a channel (24) between them, said channel leading to an exhaust volume (3) of the runner.

公开(公告)号：US11073124B2

公开(公告)日：2021-07-27

申请号：US16686835

申请日：2019-11-18

Applicant: GE Renewable Technologies

Inventor： Lionel Martinez ,  Jean-Bernard Houdeline ,  Geoffrey Darona ,  Claude Beral

IPC: F03B3/18 ,  F03B3/12 ,  F03B3/02 ,  F03B11/00 ,  F03B11/04 ,  F16J15/16

Abstract: A hydraulic turbine includes a rotor with a runner, which is concentrically surrounded by a stator, whereby the runner comprises a plurality of runner blades arranged and distributed in a ring around a rotor axis, and each runner blade extends between a runner crown and a runner band; whereby the stator comprises a plurality of guide vanes arranged and distributed in a ring around the rotor axis, and each guide vane extends between an upper stator ring and a lower stator ring; and whereby a predetermined clearance is provided at least between the runner band and the lower stator ring. A substantial reduction of pressure pulsations in the vane-less gap between said runner blades of said runner is achieved by substantially increasing said predetermined clearance.

公开(公告)号：US10961978B2

公开(公告)日：2021-03-30

申请号：US15546579

申请日：2016-01-21

Applicant: GE RENEWABLE TECHNOLOGIES

Inventor： Hai Trieu Phan ,  Fabrice Loiseau ,  Antoine Bombenger

IPC: F03B15/06 ,  F03B3/14 ,  F03B3/06 ,  F03B11/00 ,  F03B11/04

Abstract: A turbine unit for a hydraulic installation, and more in particular it deals with the hub of the turbine unit. The present invention proposes to provide means for adjusting a gap extent formed between the hub and the inner edge of the blade, this way dramatically increasing the performance of the turbine.

公开(公告)号：US20170370343A1

公开(公告)日：2017-12-28

申请号：US15546579

申请日：2016-01-21

Applicant: ALSTOM RENEWABLE TECHNOLOGIES

Inventor： Hai Trieu PHAN ,  Fabrice LOISEAU ,  Antoine BOMBENGER

IPC: F03B15/06 ,  F03B11/04

CPC classification number: F03B15/06 ,  F03B3/14 ,  F03B11/04 ,  F05B2220/32 ,  Y02E10/223

Abstract: A turbine unit for a hydraulic installation, and more in particular it deals with the hub of the turbine unit. The present invention proposes to provide means for adjusting a gap extent formed between the hub and the inner edge of the blade, this way dramatically increasing the performance of the turbine.

公开(公告)号：US09759217B2

公开(公告)日：2017-09-12

申请号：US14233948

申请日：2012-08-09

Applicant: Hiroshi Yokota ,  Fumio Nishi ,  Isao Kawamoto ,  Kenji Takahashi

Inventor： Hiroshi Yokota ,  Fumio Nishi ,  Isao Kawamoto ,  Kenji Takahashi

IPC: F03B11/04 ,  F04D9/02 ,  F04D9/00 ,  F04D1/04

CPC classification number: F04D9/02 ,  F04D1/04 ,  F04D9/005 ,  F04D9/007

Abstract: A pump with high performance and cleanability includes a casing having a smaller volute and a larger volute; a space between an outer circumference of an impeller and a starting end of the smaller volute being greater than that of the larger volute, generating a circulating flow of self-priming water from the smaller volute to the larger volute; and a diffusing part of the larger volute being formed into an upright, cylindrical self-priming water separating chamber guiding the self-priming water from the smaller volute to flow in for air-water separation. An inner circumference part of the casing is formed concentric with the outer circumference of the impeller with a predetermined space therebetween; defining members are protrusively disposed on the inner circumference part of the casing so as to define the shapes of the two volutes; and the self-priming water separating chamber is made attachable to and detachable from the casing.

公开(公告)号：US09341067B2

公开(公告)日：2016-05-17

申请号：US13825357

申请日：2011-09-20

Applicant: Andreas Kayser

Inventor： Andreas Kayser

IPC: F01D5/10 ,  F03B11/04 ,  F01D25/06 ,  F01D5/26 ,  F01D5/22

CPC classification number: F01D5/26 ,  F01D5/22

Abstract: A blade arrangement with a rotor and a plurality of blades which are distributed in a ring along the circumference of the rotor is provided. Two immediately adjacent blades of the ring form a blade pair, between the blades of which a damping element is arranged, and wherein the respective damping element comes into contact with the two blades of the blade pair assigned to them during a rotation of the rotor about a rotor axis as a result of a centrifugal force which acts in the radial direction. In order to bring about frequency detuning of the oscillation properties of blades, as a result of which machining of the turbine blade becomes unnecessary, it is proposed that the blade ring has at least two blade pairs with different damping elements.

Abstract translation: 提供了具有转子和多个叶片的叶片装置，其沿着转子的圆周分布在环中。 环的两个紧邻的刀片形成刀片对，其叶片之间布置有阻尼元件，并且其中相应的阻尼元件在转子周围转动时分配给它们的刀片对的两个刀片接触 作为沿径向作用的离心力的转子轴线。 为了引起叶片的振荡特性的频率失谐，作为不需要涡轮叶片的机械加工的结果，提出了叶片环具有至少两个具有不同阻尼元件的叶片对。

公开(公告)号：US08894366B2

公开(公告)日：2014-11-25

申请号：US12920342

申请日：2009-03-04

Applicant: Farid Mazzouji ,  Danièle Bazin ,  Michel Couston ,  Claude Beral ,  Jacques Bremond

Inventor： Farid Mazzouji ,  Danièle Bazin ,  Michel Couston ,  Claude Beral ,  Jacques Bremond

IPC: F03B15/02 ,  F03B11/04 ,  F03B3/02 ,  F03B3/12 ,  F03B3/10

CPC classification number: F03B3/02 ,  F03B3/103 ,  F03B3/125 ,  F03B11/04 ,  F05B2240/242 ,  F05B2250/25 ,  Y02E10/223 ,  Y02E10/226

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).

Abstract translation: 该轮包括设置在冠部（3）上的多个叶片（2），并且配备有附接到轮（1）的冠部或轮毂的中心区域（32）的尖端形成构件（10） 在叶片（2）的内部，冠部限定用于引导在叶片之间通过的流（E）的湿表面（31）。 尖端形成构件（10）设置有至少一个开口（121），用于将流体的一部分（E1）转向该构件的内部容积（V10）。 该构件包括截头圆锥形环形裙部（11）和布置在其内部容积（V10）中的至少一个翅片（15），并且能够改变通过开口（121）进入该容积的流量部分（E1）的路径。 该翅片（15）延伸至限定流动部分（E1）的构件（10）的出口（14）的裙部（11）的边缘（112）。

公开(公告)号：US08491255B2

公开(公告)日：2013-07-23

申请号：US12452821

申请日：2008-07-23

Applicant: Farid Mazzouji ,  Monique Traversaz

Inventor： Farid Mazzouji ,  Monique Traversaz

IPC: F03B11/04

CPC classification number: F03B11/04 ,  F03B1/04 ,  F03B3/125 ,  F03B11/002 ,  Y02E10/223 ,  Y02E10/226

Abstract: A Pelton hydraulic machine through which a main flow of water passes including at least one Pelton turbine manifold with at least a turbulent zone or a reduced-pressure zone being formed close to the manifold and wherein a secondary flow drawn from the main flow, and unaltered in relation to the main flow, is injected into the turbulent or reduced-pressure zone so as to alter the main flow locally or increase the pressure in the zone.

Abstract translation: 一种佩尔顿液压机，其中主要水流通过，包括至少一个具有至少一个湍流区域或减压区的佩尔顿涡轮歧管，其形成在靠近歧管处，并且其中从主流流出的二次流和未改变的 相对于主流动被注入到湍流或减压区域中，以便局部改变主流量或增加该区域中的压力。