Abstract

Runner (1) for a fluid machine where the runner (1) includes a runner hub (2) and one or more curved blades (6), and where the blade (6) is removably fixed to the runner hub (2) by fixing elements (20) that extends into a double curved first socket portion (14) of the blade (6), and where the first socket portion (14) bears against the runner hub (2) at one or more contact surface (30) that is plane.

IPC Classes  ?

• F03B 3/12 - BladesBlade-carrying rotors
• F04D 29/22 - Rotors specially for centrifugal pumps
• F04D 29/34 - Blade mountings

Abstract

A runner device (1) for a hydraulic fluid flow machine is described, the runner (1) including a runner hub (2) and a number of vanes (4) distributed around the center axis (S) of the runner (1), the vanes (4) being releasably connected to the runner (1) by means of bases (41) that complementarily fit grooves (21) in the runner hub (2), characterized by the grooves (21) in the runner hub (2) extending, at least at one of the outer edge portion (23) or the inner edge portion (25) of the runner hub, respectively all the way out to or all the way in to the edge portion (23, 25), whereby the bases (41) may extend radially out to or in to at least one of the outer edge portion (23) or the inner edge portion (25), respectively, of the runner hub (2). A method of providing a runner (1) for a hydraulic fluid flow machine is described as well.

IPC Classes  ?

• F03B 3/12 - BladesBlade-carrying rotors
• F04D 29/22 - Rotors specially for centrifugal pumps

Abstract

A bucket connection for a turbine runner that includes a number of buckets encircling a centre disk. At least one bucket is pivotably or hingedly connected to the centre disk, and the position of the bucket relative to the centre disk under operation is set by an abutment between the bucket and a support, where the support is connected to or constitutes a part of the centre disk and where the abutment is constituted by a non-planar abutment surface on the support and an abutment surface on the bucket The bucket connection is provided with a buckling and is the abutment surface of the bucket is provided with a buckling adapted to fit into the buckling of the abutment surface of the support, whereby the abutment is adapted to accommodate forces acting both tangentially and radially of the bucket.

IPC Classes  ?

• F03B 1/02 - BucketsBucket-carrying rotors
• F01D 5/22 - Blade-to-blade connections, e.g. by shrouding

Abstract

A runner device (1) for a hydraulic fluid flow machine is described, the runner (1) including a runner hub (2) and a plurality of vanes (4) distributed around the centre axis (S) of the runner (1) and releasably attached to the runner hub (2) by means of bases (41) that complementarily fit grooves (21) in the runner hub (2), characterized by one of the bases (41) or the grooves (21) being formed with recesses (213, 413) on a side facing the other one of the bases (41) or the grooves (21), and the other one of the bases (41) or grooves (21) being formed with keys (211, 411) complementarily fitting the recesses (213, 413). A method of providing a runner (1) is described as well.

IPC Classes  ?

• F03B 3/12 - BladesBlade-carrying rotors
• B23P 15/04 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from several pieces
• F04D 29/24 - Vanes

Abstract

A runner device (1) for a hydraulic fluid flow machine is described, the runner (1) including a runner hub (2) and a number of vanes (4) distributed around the centre axis (S) of the runner (1), the vanes (4) being releasably connected to the runner (1) by means of bases (41) that complementarily fit grooves (21) in the runner hub (2), characterized by the grooves (21) in the runner hub (2) extending, at least at one of the outer edge portion (23) or the inner edge portion (25) of the runner hub, respectively all the way out to or all the way in to the edge portion (23, 25), whereby the bases (41) may extend radially out to or in to at least one of the outer edge portion (23) or the inner edge portion (25), respectively, of the runner hub (2). A method of providing a runner (1) for a hydraulic fluid flow machine is described as well.

IPC Classes  ?

• F03B 3/12 - BladesBlade-carrying rotors
• B23P 15/04 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from several pieces
• F04D 29/24 - Vanes

Abstract

A labyrinth packing device (15) on a runner (1) for a hydraulic fluid flow machine is described, the labyrinth packing (15) being arranged on a portion of the runner (1) that, in a situation of application, is at a short distance from a stationary portion (2) of the hydraulic fluid flow machine, and the labyrinth packing (15) including at least one pocket (151) with a closed bottom portion (153) and an open top portion (154), the bottom portion ( 153) and the top portion (154) being connected by two side walls (152), characterized by an angle (β) between the bottom portion (153) of the at least one pocket (151) of the labyrinth packing (15) and each of the side walls (152) being larger than 90°. A method of forming a labyrinth packing (15) on a runner (1) for a hydraulic fluid flow machine is described as well.

IPC Classes  ?

• F16J 15/44 - Free-space packings
• F03B 11/00 - Parts or details not provided for in, or of interest apart from, groups
• F04D 29/08 - Sealings
• F16J 15/16 - Sealings between relatively-moving surfaces

Goods & Services

Turbine runners; pump impellers.

Goods & Services

(1) Turbine runners; pump impellers

Abstract

A bucket connection for a turbine runner (1) where the turbine runner (1) includes a number of buckets (4) encircling a centre disk (2), where at least one bucket (4) is pivotably or hingedly connected to the centre disk (2), and where the position of the bucket (4) relatively the centre disk (2) under operation is set by an abutment (22) between the bucket (4) and a support (16), where the support (16) is connected to or constitutes a part of the centre disk (2), and where the abutment is constituted by an abutment surface 18 on the support 16 and an abutment surface 20 on the bucket 4, where the abutment surface 18 on the support 16 is non-planar, in that it is provided with a buckling 19, and that the abutment surface 20 of the bucket 4 is provided with a buckling 21 adapted to fit into the buckling 19 of the abutment surface 18 of the support 16, whereby the abutment 22 is adapted to accommodate forces acting both tangentially and radially of the bucket 4.

IPC Classes  ?

• F03B 1/02 - BucketsBucket-carrying rotors
• F01D 5/30 - Fixing blades to rotorsBlade roots

Abstract

A device for a runner (1) for a fluid machine comprising a runner hub (2) and a number of blades (4) distributed around the centre axis (8) of the runner (1), each blade (4) being detachably connected to the runner (1).

IPC Classes  ?

• F04D 29/24 - Vanes

Abstract

A method and a device to counteract wear about a guide vane (16) from a particle bearing drive water, the guide vane (16) being arranged in a guide vane housing (14) in a water turbine (1), and where the method comprises: - routing a supply channel (36) for water cleaner than the drive water to the attachment point area between the guide vane (16) and the guide vane housing (14); and - leading water cleaner than the drive water to flow through a slit (28) where the slit (28) at least partly encircles the guide vane (16).

IPC Classes  ?

• F03B 3/18 - Stator bladesGuide conduits or vanes, e.g. adjustable
• F03B 11/08 - Parts or details not provided for in, or of interest apart from, groups for removing foreign matter, e.g. mud

Abstract

A method and a device for counteracting wear from particle bearing drive water in a runner (4) in a water turbine (1), the runner (4) comprising a runner hub (16) and a vane (18), or a runner hub (16), a vane (18) and a runner band (20), the vane (18) being attached to the runner hub (16) in a first attachment area (22) and to the runner band (20) in a second attachment area (24), and where the method comprises: - routing a supply channel (40) for water cleaner than the drive water to at least the first attachment area (22) or the second attachment area (24) and - leading water cleaner than the drive water to flow over at least a portion of the vane (18) surface.

IPC Classes  ?

• F03B 3/12 - BladesBlade-carrying rotors
• F03B 11/00 - Parts or details not provided for in, or of interest apart from, groups
• F03B 11/08 - Parts or details not provided for in, or of interest apart from, groups for removing foreign matter, e.g. mud

Abstract

A method and device for reducing wear in a water turbine (1) comprising a turbine housing (2) and an impeller (4), and where between the turbine housing (2) and the impeller (4) is arranged a seal (16, 18), and where the method comprises supplying cleaned water to the seal (16, 18).

IPC Classes  ?

• F03B 3/14 - Rotors having adjustable blades

Abstract

A spiral casing device (1) for a fluid machine in which the flow area of the spiral casing (1) changes along the flow path of the spiral casing (1) and in which the spiral casing (1) is provided with an opening (22) extending radially in-wards, the spiral casing (1) being polygonal in cross section and each side being formed by a plate portion (6, 8, 10, 12, 14, 16, 18, 20), the number of sides being larger than four.

IPC Classes  ?

• F04D 29/02 - Selection of particular materials
• F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps

Abstract

A method and device for sealing between a guide vane (6) in a turbine housing (2) and the turbine housing (2), the guide vane (6) being rotatable or movable in the turbine housing (2) and there being arranged a seal (14) between the turbine housing (2) and the guide vane (6), and the method comprising the operations of : - selecting a seal material (16) from a material group whose materials are capable of taking shape of a worn surface between the turbine housing (2) and guide vane (6) when being pressed against the worn surface; and - pressing the seal material (16) against the worn surface.

IPC Classes  ?

• F03B 3/18 - Stator bladesGuide conduits or vanes, e.g. adjustable
• F03B 11/00 - Parts or details not provided for in, or of interest apart from, groups

Abstract

A device for a runner (1) for a fluid machine comprising a runner hub (2) and a number of blades (4) distributed around the centre axis (8) of the runner (1), each blade (4) being detachably connected to the runner (1).

IPC Classes  ?

• F03B 13/12 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates characterised by using wave or tide energy