US20130302169A1 - Rotor assembly for an axial turbine - Google Patents

Rotor assembly for an axial turbine Download PDF

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Publication number
US20130302169A1
US20130302169A1 US13/943,413 US201313943413A US2013302169A1 US 20130302169 A1 US20130302169 A1 US 20130302169A1 US 201313943413 A US201313943413 A US 201313943413A US 2013302169 A1 US2013302169 A1 US 2013302169A1
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US
United States
Prior art keywords
rotor
blade
section
blade fastening
fastening section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/943,413
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English (en)
Inventor
Patrick Hennes
Alexander Sauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
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Voith Patent GmbH
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Filing date
Publication date
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Assigned to VOITH PATENT GMBH reassignment VOITH PATENT GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HENNES, PATRICK, SAUER, ALEXANDER
Publication of US20130302169A1 publication Critical patent/US20130302169A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
    • F03B13/264—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy using the horizontal flow of water resulting from tide movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F03B17/061—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially in flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0691—Rotors characterised by their construction elements of the hub
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the invention relates to a rotor assembly for an axial turbine, in particular having a propeller-shaped rotor for a tidal power plant or a wind power plant having horizontal axis of rotation.
  • Tidal power plants having a horizontally aligned drive shaft, which revolves on a nacelle, and which is driven by a propeller-shaped turbine are known and correspond to the design of wind power plants in horizontal rotor construction.
  • the rotors of axial turbines of this type are either implemented as units having free flow around them or are encased by a jacket housing having Venturi geometry for flow acceleration.
  • the rotor assembly described hereafter may also be transferred to further axial fluid-flow machines, such as fans.
  • a simplified plant concept having rigidly linked rotor blades is preferable for tidal power plants because of the accessibility for maintenance work, which is more difficult.
  • a device for rotating the plant around a vertical axis is additionally omitted and instead a rotor having rotor blades which can have bidirectional incident flow is used. This has the result that upon the occurrence of the overload, the rotor blades cannot be transferred by means of a pitch angle adjustment into the vane position, as is typically the case in the design used for wind power plants. The entire plant also cannot be rotated out of the current. Accordingly, a high standard results for the structural stability of the rotor blade attachment for tidal power plants, which results in heavy, large-scale, and expensive fastening components.
  • the heretofore known rotor design for axial turbines of tidal power plants is directed to a modularly constructed rotor, for which the individual rotor blades are installable separately on a hub.
  • the hub has receptacles for blade fastening sections of the rotor blades.
  • blade fastening sections are typically applied cylindrically, wherein a transition region to the profiled rotor blade sections, which interact with the current field, having higher structural stability is provided.
  • the cylindrical blade fastening sections typically have a diameter which is less than the chord length of the directly adjoining profiled rotor blade sections and is greater than the profile thickness in this region. There is thus a constriction, from which a notch effect results in the event of a load of the rotor blades, which must be secured by additional structural reinforcements.
  • the known blade fastening sections typically have on the hub-side end a fastening flange, which is used to form a screw connection between the blade fastening section of the rotor blade and the hub part of the revolving unit adjoining thereon.
  • a fastening flange for wind power plants by U.S. Pat. No. 6,305,905 B1, for example.
  • Corresponding fastening flanges for rotor blades on a hub of a tidal power plant result from GB 2467226 A, wherein a flange-shaped blade fastening section, which is formed in one piece with the profiled rotor blade section, is covered by means of a fastening ring for securing on the hub part.
  • U.S. Pat. No. 5,173,023 and GB 502409 for further rotor blade attachments.
  • the present invention is based on the object of specifying a rotor assembly for an axial turbine having a plurality of individually installable rotor blades, which is distinguished by a high structural stability of the rotor blade fastenings and by an efficient force and torque transmission to an adjoining drive shaft.
  • a rotor blade design is desired, which allows simple replacement of individual rotor blades.
  • the rotor assembly is to be used in particular for operating a tidal power plant and is preferably to be suitable for implementing an axial turbine which can have bidirectional incident flow.
  • the rotor arrangement must be able to absorb in particular asymmetrical load peaks which only act on individual rotor blades and must be simplified both in design and manufacturing. Furthermore, an installation method for such a rotor blade assembly is sought.
  • the inventors have recognized that instead of fastening individual rotor blades to a hub, the carrying capacity of a rotor blade mount increases by omitting an integral hub component.
  • individual hub segments are assigned to the replaceable rotor blades. These hub segments form blade fastening sections, which mutually support one another at least in the circumferential direction and at least indirectly.
  • a detachable connection of adjacent blade fastening sections Preferably, for rotors which can have bidirectional incident flow, not only pressure forces in the circumferential direction between the blade fastening sections are mediated, but rather additionally traction forces in the circumferential direction and axial force components are absorbed by a detachable connection of adjacent blade fastening sections.
  • a screw connection and/or a formfitting connection preferably comes into consideration as the detachable connection, so that in the event of plant maintenance, individual rotor blades can be separately adjusted or replaced.
  • the blade fastening sections form a segmented hub part after the execution of the installation on the drive shaft due to the interaction with the respective adjacent blade fastening sections.
  • Each rotor blade of the rotor blade assembly comprises a profiled blade section and a blade fastening section, which is preferably materially joined thereto, and which is supported on and/or detachably connected to a corresponding blade fastening section of an adjacent rotor.
  • the profiled rotor section of the rotor blades represents the part of the rotor blade which interacts with the current field in a usable manner. In the event of a drive by a current in a body of water, the profiled rotor blade section is accordingly the hydrodynamically active part of the rotor blade having an adapted blade profile.
  • symmetrical profiles are used for this purpose, wherein an elliptical geometry can be provided for a double-axis symmetrical profile, for example.
  • point-symmetrical profiles having a profile bulge i.e., reflexed trailing edge profiles, can be used.
  • Each rotor blade particularly preferably has a one-piece embodiment of the assigned profiled rotor blade section and the assigned blade fastening section.
  • the rotor blade can be produced from GFRP (glass fiber reinforced plastic) or CFRP (carbon fiber reinforced plastic) material or from steel, wherein contact regions on the blade fastening sections, which are used for force transmission to blade fastening sections of an adjacent rotor blade, are preferably reinforced by embedding abrasion-resistant materials, for example, a coupling element made of metal.
  • the blade fastening sections are produced as cast parts. Profiled rotor blade sections which are manufactured from steel, CFRP, or GFRP are materially joined thereon.
  • blade stubs which form a first part of the profiled rotor blade section, are materially joined on the blade fastening section, wherein a second part of the profiled rotor blade section is detachably connected to the blade stub.
  • the transition from the first part to the second part of the profiled rotor blade section can be embodied as an intended breakpoint to secure the entire plant from severe destruction in case of overload. Furthermore, the possibility exists of providing this transition region with an elasticity to implement a bending-rotating coupling of the rotor blade.
  • the blade fastening sections are fastened in a formfitting manner and/or by means of a screw connection to a drive shaft of the rotor assembly, so that each individual rotor blade is connected in a rotationally-fixed manner to the drive shaft.
  • This connection can be conveyed through one or more of the intermediate elements, so that the rotationally-fixed linkage of the rotor blades is at least indirectly provided.
  • the rotor blade assembly embodied according to the invention only a part of the forces and torques introduced from the profiled rotor blade sections are transmitted to the respective connection of the rotor blades to the drive shaft, since a further part of the force action is absorbed by the mutual support of the adjacent blade fastening sections.
  • each blade fastening section comprises a first contact region and a second contact region as well as the above-described third contact region to the drive shaft.
  • the first contact region and the second contact region are preferably spatially partitioned. The first contact region and the second contact region alternatively adjoin one another and merge into one another.
  • the first and the second contact regions are established by respective interaction with the directly adjacent rotor blade.
  • the first contact region is at least indirectly supported on the blade fastening section of a first, directly adjacent rotor blade and the second contact region is accordingly at least indirectly supported on the blade fastening section of a second, directly adjacent rotor blade.
  • a rotor, having axial flow from an axial direction, of an axial turbine can thus be implemented in leeward operation.
  • the first contact region and the second contact region preferably have means for the detachable connection to the respective adjoining blade fastening section of the adjacent rotor blade. These means can be implemented in the form of a screw connection and/or as a formfitting connection.
  • the contact regions are particularly preferably displaced into the intermediate blade regions, which are less mechanically loaded. These intermediate blade regions are thus defined in that their angular offset in the circumferential direction to a partition plane between adjacent rotor blades is at most ⁇ 30° and preferably at most ⁇ 15°.
  • the partition plane extends centrally between adjacent rotor planes, which are assigned to individual rotor blades and are respectively spanned by the axis of rotation of the drive shaft and a further straight line, which is characteristic for the transition from the profiled rotor blade section to the blade fastening section.
  • a rotor blade having a radial beam geometry is provided, i.e., the threading lines of the profiled rotor blade sections follow a straight line in the radial direction.
  • a rotor plane is established by the threading line and the axis of rotation.
  • the profiled rotor blade sections extend in a sickle shape.
  • An embodiment is thus conceivable for which the profiled rotor blade sections do extend in the rotor plane which is defined as axially-symmetrical to the axis of rotation, but the threading lines do not follow straight lines.
  • the profiled rotor blade sections are curved such that they leave the rotor plane.
  • a characteristic point for example, the point on the chord line at half profile depth, is selected to establish the rotor plane on a predetermined profile section in the transition from the blade fastening section to the profiled rotor blade section.
  • a straight line extending through this point in the radial direction and also the axis of rotation then define the rotor plane.
  • the intermediate blade regions are preferably in an angular interval of 40-60% of the angle which is formed by a section of the rotor plane having rotor planes located adjacent to one another.
  • the intermediate blade regions are less loaded in relation to the remaining regions of the blade fastening sections.
  • the connecting elements for the blade fastening sections of adjacent rotor blades advantageously lie in this region.
  • an elastic intermediate layer is provided between adjoining blade fastening sections, in particular the contact regions facing toward one another.
  • Elastomeric materials having a high carrying capacity which are typically used to implement seawater-proof plain bearings, come into consideration for this purpose. These materials are typically loadable with pressure and have a high abrasion resistance for a hard/soft pair. A certain relative movement of adjacent rotor blades, which arises because of impact loads, can be compensated for by the elastic intermediate layer.
  • intermediate elements are capable of adapting the installation location of the rotor blades to the respective site. This allows the use of standardized rotor blades and a change of the rotor blade geometry, in particular the angle of attack of the profiled rotor blade sections, by a corresponding selection of the intermediate elements.
  • An embodiment is particularly preferred, for which the entirety of the blade fastening sections of the rotor in the fastened state encloses a central free region, which is used to accommodate a shaft part of a driveshaft adjoining the rotor.
  • the contour of the central free region is particularly preferably designed such that it deviates from the circular contour and transmits the drive torque generated from the rotor through a form fit with a corresponding complementarily implemented shaft connecting part.
  • the design according to the invention allows the reduction of the notch effect in the transition from the profiled rotor blade sections to the blade fastening sections. This is achieved because the heretofore typical cylindrical design of the blade fastening sections for accommodation in a recess on a hub part is replaced by the assignment of a hub segment to an individual rotor blade. Large-scale blade fastening sections result therefrom, without the segmented hub part, which arises due to the joining together of the rotor blades, experiencing a size growth.
  • notch effect there are preferably no constrictions in the region of a radial section of the rotor blade which establishes a transition region between the profiled rotor blade sections and the blade fastening section.
  • a transition region which results in a continuous tapering of the rotor blade above a limiting radius in the direction radially outward is particularly preferred.
  • An alternative embodiment is also conceivable, for which the profile regions which are essential for structural stability, i.e., the profile lugs, protrude somewhat beyond the transverse extension of the blade fastening section on the profiled rotor blade section.
  • the profile chord in this attachment region can exceed the transverse extension of the blade fastening section by up to 20%, without a substantial growth of the notch effect resulting.
  • FIG. 1 shows a perspective view of a first exemplary embodiment for a rotor assembly according to the invention in the partially-installed state
  • FIG. 2 shows a second exemplary embodiment for a rotor assembly according to the invention in the partially-installed state in a perspective view
  • FIG. 3 shows an alternative rotor design in an axial horizontal projection
  • FIG. 4 shows a detail from FIG. 3 in an enlarged view
  • FIG. 5 shows a rotor assembly according to the invention having a rotor according to FIG. 3 in the installed state on the driveshaft;
  • FIG. 6 shows a further, alternative rotor design in an axial horizontal projection.
  • FIG. 1 shows a schematic simplified view of a rotor assembly according to the invention having a driveshaft 1 and a rotor 20 having three rotor blades 2 . 1 , 2 . 2 , 2 . 3 .
  • the driveshaft 1 comprises an axis of rotation 21 , which establishes an axial direction 22 and a circumferential direction 23 .
  • Each rotor blade 2 . 1 , 2 . 2 , 2 . 3 comprises a profiled rotor blade section 3 . 1 , 3 . 2 , 3 . 3 for interacting with the current field and a blade fastening section 4 . 1 , 4 . 2 , 4 . 3 .
  • the boreholes 17 . 1 , . . . , 17 . n on a first axial end face 24 are used for this purpose, which correspond with threaded boreholes 27 . 1 , . . . , 27 . n on the axial terminus face 26 of the driveshaft 1 .
  • the profiled rotor blade section 3 . 1 is materially joined to the assigned blade fastening section 4 . 1 for the illustrated, preferred design.
  • the further rotor blades 2 . 2 , 2 . 3 are accordingly designed such that there is a material bond between the respective profiled rotor blade section 3 . 2 , 3 . 3 and the assigned blade fastening section 4 . 2 , 4 . 3 .
  • the rotor blades 2 . 1 , 2 . 2 , 2 . 3 can be produced from different construction materials. In addition to cast parts, steel and fiber composite materials based on GFRP and CFRP come into consideration for this purpose. Connecting different materials to implement the rotor blades 2 . 1 , 2 . 2 , 2 . 3 is also conceivable.
  • Each blade fastening section 4 . 1 , 4 . 2 , 4 . 3 comprises a first axial end face 24 and a second axial end face 25 , which are formed by plate-shaped elements spaced apart from one another.
  • the plate-shaped elements are connected by a terminus plate, which extends in the installed state in an axial sectional plane of the driveshaft 21 , at a first contact region 7 . 1 , 7 . 2 , 7 . 3 and at a second contact region 8 . 1 , 8 . 2 , 8 . 3 , so that a light-construction but torsion-resistant structure results, which offers easy accessibility for installation work through the side openings 32 in the box-shaped structure.
  • the first contact region 7 . 1 , 7 . 2 , 7 . 3 for a first rotor blade 2 . 1 , 2 . 2 , 2 . 3 is opposite to the second contact region 8 . 1 , 8 . 2 , 8 . 3 on the blade fastening section 4 . 1 , 4 . 2 , 4 . 3 of a respective directly adjacent rotor blade 2 . 1 , 2 . 2 , 2 . 3 .
  • the first contact regions 7 . 1 , 7 . 2 , 7 . 3 and the second contact regions 8 . 1 , 8 . 2 , 8 . 3 which face toward one another in the installed state, are used for the mutual support of the blade fastening sections 4 . 1 , 4 . 2 , 4 . 3 in the circumferential direction 23 .
  • the rotor 20 is on the leeward side.
  • the resulting shear forces 30 . 1 , 30 . 2 , 30 . 3 on the profiled rotor blade sections 3 . 1 , 3 . 2 , 3 . 3 result, in the blade fastening sections 4 . 1 , 4 . 2 , 4 . 3 , in the outlined force components 29 . 1 , 29 . 2 in the circumferential direction 23 , which are absorbed by mutual contact of the blade fastening sections 4 . 1 and 4 . 3 .
  • FIG. 2 shows a refinement of the invention for a rotor assembly which can have bidirectional incident flow, wherein fastening means are provided on the first contact regions 7 . 1 , 7 . 2 , 7 . 3 and the second contact regions 8 . 1 , 8 . 2 , 8 . 3 , in order to absorb the alternating compression and traction forces outlined by the force components 29 . 3 , 29 . 4 .
  • Dovetail-shaped fastening elements 10 . 1 , . . . , 10 . 5 are shown as an example for this purpose, which allow joining together of the blade fastening sections 4 . 1 , 4 . 2 , 4 . 3 by way of an axial movement of the respective rotor blade 2 .
  • Threaded bolts are used as an additional, detachable connection of the blade fastening sections 4 . 1 , 4 . 2 , 4 . 3 —the fastening element 6 is shown as an example for this purpose in FIG. 2 .
  • FIG. 3 shows a horizontal projection of the first axial end face 24 of the blade fastening sections 4 . 1 , 4 . 2 , 4 . 3 having boreholes 17 . 1 - 17 . n for fastening on a driveshaft 1 , which is outlined in FIG. 5 .
  • FIG. 4 shows the second contact region 8 . 2 on the blade fastening section 4 . 2 and the first contact region 7 . 3 on the blade fastening section 4 . 3 in an enlarged illustration as a section in the plane established by the longitudinal axes 9 . 1 , 9 . 2 , 9 . 3 of the profiled rotor blade sections 3 . 1 , 3 . 2 , 3 . 3 .
  • the contact regions 8 . 2 , 7 . 3 are detachably connected by threaded bolts 11 . 1 , 11 . 2 , which enclose and pre-tension an elastic intermediate element 13 .
  • An elastic plain bearing material is suitable for this purpose, for example, the elastomeric material Orkot®.
  • the elastic intermediate element 13 allows a certain mobility of the rotor blades 2 . 1 , 2 . 2 , 2 . 3 in case of an asymmetrical load.
  • a lateral opening 31 is provided in the box-shaped blade fastening sections 4 . 2 , 4 . 3 , which reduces the weight of the rotor blade attachment and allows the accessibility to the boreholes 17 . 1 - 17 . n, which are used for the shaft attachment, for the installation.
  • FIG. 4 shows that the mutual support points of the blade fastening sections 4 . 1 , 4 . 2 , 4 . 3 are applied in an intermediate blade region 18 . 1 , 18 . 2 , 18 . 3 between the force introduction regions at the transition to the profiled rotor blade sections 3 . 1 , 3 . 2 , 3 . 3 .
  • a partition plane 32 is outlined between the second contact region 8 . 2 of the blade fastening section 4 . 1 and the first contact region 7 . 2 of the blade fastening section 4 . 2 , which partition plane is at half of the angle between the longitudinal axes 9 . 1 and 9 . 2 of the profiled rotor blade sections 3 . 1 , 3 .
  • a further structural reinforcement results from an advantageous design of the transition regions 19 . 1 , 19 . 2 , 19 . 3 between the profiled rotor blade sections 3 . 1 , 3 . 2 , 3 . 3 and the blade fastening sections 4 . 1 , 4 . 2 , 4 . 3 .
  • the advantageous embodiment according to FIG. 3 shows an external contour which is free of constrictions, so that the notch effect at the rotor blade attachments is reduced.
  • a continuous tapering from the blade fastening section to the profiled rotor blade section 3 . 1 , 3 . 2 , 3 . 3 toward the radial outside is particularly preferably provided from a specific radius.
  • the blade fastening sections 4 . 1 , 4 . 2 , 4 . 3 of the rotor blades 2 . 1 , 2 . 2 , 2 . 3 which are detachably connected to one another, form a segmented hub part 5 , which has a central free region 14 for an advantageous embodiment.
  • the central free region 14 is triangular in relation to a section in the rotor plane.
  • Such a central free region 14 of the segmented hub part 5 which deviates from the circular shape allows, after all rotor blades 2 . 1 , 2 . 2 , 2 .
  • FIG. 5 a horizontal projection of the second axial end face 25 of the rotor 20 .
  • the concealed, first axial end face 24 having the boreholes 17 . 1 , . . . , 17 . n (not visible in FIG. 5 ) is pressed against the axial terminus face 26 of the driveshaft 1 for fastening.
  • a rotor 20 installed in this manner can be partially installed for maintenance purposes, in that individual rotor blades 2 . 1 , 2 . 2 , 2 .
  • the boreholes 17 . 1 , . . . , 17 . n permit a certain installation freedom by way of the use of oblong holes.
  • a securing element which is detachably connected to the driveshaft 1 adjoins the shaft connecting part 16 , which securing element overlaps and axially secures the second axial end face 25 of the blade fastening sections 4 . 1 , 4 . 2 , 4 . 3 in the installed position.
  • intermediate elements 13 . 1 , 13 . 2 , 13 . 3 are used to implement the detachable connection of the blade fastening sections 4 . 1 , 4 . 2 , 4 . 3 .
  • These represent separate components which are arranged spatially partitioned and are used to couple the rotor blades 2 . 1 , 2 . 2 , 2 . 3 .
  • the intermediate elements 13 . 1 , 13 . 2 , 13 . 3 can have a form fit with the shaft connecting part 16 of the driveshaft 1 .
  • intermediate elements 13 . 1 , 13 . 2 , 13 . 3 which are adapted specifically for the plant are used, which implement a tilted setting of the rotor blades 2 . 1 , 2 . 2 , 2 . 3 .
  • the irregularities resulting for this case on the end face of the rotor 20 , which faces toward the adjoining driveshaft 1 must be supported with appropriately adapted wedge elements for secure contact.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Oceanography (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Wind Motors (AREA)
  • Hydraulic Turbines (AREA)
US13/943,413 2011-03-10 2013-07-16 Rotor assembly for an axial turbine Abandoned US20130302169A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102011013547A DE102011013547A1 (de) 2011-03-10 2011-03-10 Rotoranordnung für eine Axialturbine und Verfahren für deren Montage
DE102011013547.2 2011-03-10
PCT/EP2012/001019 WO2012119771A2 (fr) 2011-03-10 2012-03-08 Dispositif rotor pour une turbine axiale et procédé pour son montage

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/001019 Continuation WO2012119771A2 (fr) 2011-03-10 2012-03-08 Dispositif rotor pour une turbine axiale et procédé pour son montage

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US20130302169A1 true US20130302169A1 (en) 2013-11-14

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US13/943,413 Abandoned US20130302169A1 (en) 2011-03-10 2013-07-16 Rotor assembly for an axial turbine

Country Status (7)

Country Link
US (1) US20130302169A1 (fr)
EP (1) EP2683939A2 (fr)
JP (1) JP2014507599A (fr)
KR (1) KR20140061302A (fr)
CA (1) CA2825235A1 (fr)
DE (1) DE102011013547A1 (fr)
WO (1) WO2012119771A2 (fr)

Cited By (16)

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US20150047192A1 (en) * 2013-08-14 2015-02-19 Siemens Aktiengesellschaft Method to install a rotor blade
US20150050152A1 (en) * 2013-08-14 2015-02-19 Siemens Aktiengesellschaft Segmented wind turbine hub
US20150198142A1 (en) * 2012-08-10 2015-07-16 you WINenergy GmbH Segmented rotor hub
USD741470S1 (en) * 2014-06-09 2015-10-20 Youngo Limited Ceiling fan blade
USD741988S1 (en) * 2014-06-06 2015-10-27 Air Cool Industrial Co., Ltd. Ceiling fan
USD742500S1 (en) * 2014-06-06 2015-11-03 Air Cool Industrial Co., Ltd. Ceiling fan blade
WO2016075355A1 (fr) * 2014-11-14 2016-05-19 Aparicio Sánchez Rafael Turbine de captation de l'énergie des vagues de la mer
USD770027S1 (en) * 2015-06-30 2016-10-25 Delta T Corporation Fan
USD797917S1 (en) 2015-08-17 2017-09-19 Delta T Corporation Fan with light
USD798433S1 (en) * 2015-01-12 2017-09-26 Hunter Fan Company Ceiling fan blade
US20180087578A1 (en) * 2016-09-23 2018-03-29 Srinivas Ratna Kosuri Mounting segments and a wind turbine with mounting segments
US9932961B1 (en) * 2016-09-16 2018-04-03 Jeremy W. Gorman Replacement airfoil blades for a wind power generator
US20180149139A1 (en) * 2016-11-29 2018-05-31 Siemens Aktiengesellschaft Wind turbine
USD847969S1 (en) 2016-01-04 2019-05-07 Delta T, Llc Fan canopy
US11028820B2 (en) * 2019-10-10 2021-06-08 HangZhou JiangHe Hydro-Electrical Science & Technolo Tidal current generating unit
USD1011510S1 (en) * 2023-07-27 2024-01-16 Huanwen Pan Fan blade

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015117520B3 (de) * 2015-10-15 2017-03-02 SCHOTTEL Hydro GmbH Turbine
CN109185043A (zh) * 2018-08-06 2019-01-11 中材科技（邯郸）风电叶片有限公司 风电叶片及生产工艺
JP2020139498A (ja) * 2019-02-22 2020-09-03 Ntn株式会社 水力発電装置の水車翼

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003677A (en) * 1973-05-07 1977-01-18 Wilmot Breeden (Truflo) Limited Fan assembly with blades secured between two hub members
US4053259A (en) * 1974-10-31 1977-10-11 Axial International Establishment Axial fan adjustable pitch connectable blades
US4256435A (en) * 1978-08-02 1981-03-17 Eckel Oliver C Mounting support blocks for pivotal rotor of wind turbine
US4605355A (en) * 1983-03-31 1986-08-12 Competition Aircraft, Inc. Propeller
US6010306A (en) * 1997-05-05 2000-01-04 King Of Fans, Inc. Quick assembly blades for ceiling fans
US6514043B1 (en) * 1998-06-04 2003-02-04 Forskningscenter Risø Wind turbine hub

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE14487C (de) * 1900-01-01 W. COOKE und D. MYL-CHREEST in Liverpool Neuerungen in der Befestigung von Schiffsschrauben
US109458A (en) * 1870-11-22 Improvement in propelling mechanisms
GB502409A (en) 1937-09-11 1939-03-13 Charles Dudley Philippe Improvements in and relating to fibrous materials impregnated with plastic materialsand moulded products prepared therefrom
US3002266A (en) * 1957-04-24 1961-10-03 Jack E Lynn Method of constructing propellers
US3161239A (en) * 1963-01-18 1964-12-15 Andersen F S Impeller constructions
JPS5731579U (fr) * 1980-07-30 1982-02-19
US4566855A (en) * 1981-08-28 1986-01-28 Costabile John J Shock absorbing clutch assembly for marine propeller
JPS5857505U (ja) * 1981-10-16 1983-04-19 日立造船株式会社 タ−ビンブレ−ドの共振回避構造
GB2201198A (en) * 1986-10-03 1988-08-24 Haden Christopher Mark Marine propeller
US5173023A (en) 1991-08-12 1992-12-22 Cannon Energy Corporation Wind turbine generator blade and retention system
JPH0988506A (ja) * 1995-09-21 1997-03-31 Ngk Insulators Ltd ハイブリッド型ガスタービン動翼用のブレード及びタービンディスク並びにこれらからなるハイブリッド型ガスタービン動翼
US6305905B1 (en) 1999-05-05 2001-10-23 United Technologies Corporation Bolted-on propeller blade
DE10041002B4 (de) * 2000-08-22 2006-03-09 Nordseewerke Gmbh Vorrichtung zur Übertragung von Antriebskräften
GB2367596A (en) * 2000-10-06 2002-04-10 Nmb Fan rotor construction
GB2372784A (en) * 2000-11-24 2002-09-04 Eclectic Energy Ltd Air Turbine Interlocking Blade Root and Hub Assembly
DK1876351T3 (en) * 2005-03-30 2017-10-23 Zephyr Corp Windmill
DE202007004136U1 (de) * 2007-03-21 2007-06-06 Sprenger, Rudolf Windkraftmaschine
DE102007034618A1 (de) * 2007-07-25 2009-01-29 Georg Hamann Vorrichtung zur Erzeugung von Energie aus einer Fluidströmung
KR100962147B1 (ko) * 2008-06-12 2010-06-14 원인호 풍차용 회전판
GB0900945D0 (en) 2009-01-21 2009-03-04 Aquamarine Power Ltd Composite blade
WO2010125478A1 (fr) 2009-04-28 2010-11-04 Atlantis Resources Corporation Pte Limited Pale de turbine bidirectionnelle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003677A (en) * 1973-05-07 1977-01-18 Wilmot Breeden (Truflo) Limited Fan assembly with blades secured between two hub members
US4053259A (en) * 1974-10-31 1977-10-11 Axial International Establishment Axial fan adjustable pitch connectable blades
US4256435A (en) * 1978-08-02 1981-03-17 Eckel Oliver C Mounting support blocks for pivotal rotor of wind turbine
US4605355A (en) * 1983-03-31 1986-08-12 Competition Aircraft, Inc. Propeller
US6010306A (en) * 1997-05-05 2000-01-04 King Of Fans, Inc. Quick assembly blades for ceiling fans
US6514043B1 (en) * 1998-06-04 2003-02-04 Forskningscenter Risø Wind turbine hub

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150198142A1 (en) * 2012-08-10 2015-07-16 you WINenergy GmbH Segmented rotor hub
US20150050152A1 (en) * 2013-08-14 2015-02-19 Siemens Aktiengesellschaft Segmented wind turbine hub
CN104373299A (zh) * 2013-08-14 2015-02-25 西门子公司 分段式风力涡轮机轮毂
US20150047192A1 (en) * 2013-08-14 2015-02-19 Siemens Aktiengesellschaft Method to install a rotor blade
USD741988S1 (en) * 2014-06-06 2015-10-27 Air Cool Industrial Co., Ltd. Ceiling fan
USD742500S1 (en) * 2014-06-06 2015-11-03 Air Cool Industrial Co., Ltd. Ceiling fan blade
USD741470S1 (en) * 2014-06-09 2015-10-20 Youngo Limited Ceiling fan blade
WO2016075355A1 (fr) * 2014-11-14 2016-05-19 Aparicio Sánchez Rafael Turbine de captation de l'énergie des vagues de la mer
USD798433S1 (en) * 2015-01-12 2017-09-26 Hunter Fan Company Ceiling fan blade
USD770027S1 (en) * 2015-06-30 2016-10-25 Delta T Corporation Fan
USD808004S1 (en) * 2015-06-30 2018-01-16 Delta T Corporation Fan
USD797917S1 (en) 2015-08-17 2017-09-19 Delta T Corporation Fan with light
USD847969S1 (en) 2016-01-04 2019-05-07 Delta T, Llc Fan canopy
US9932961B1 (en) * 2016-09-16 2018-04-03 Jeremy W. Gorman Replacement airfoil blades for a wind power generator
US20180087578A1 (en) * 2016-09-23 2018-03-29 Srinivas Ratna Kosuri Mounting segments and a wind turbine with mounting segments
US10808767B2 (en) * 2016-09-23 2020-10-20 Siemens Gamesa Renewable Energy A/S Mounting segments and a wind turbine with mounting segments
US20180149139A1 (en) * 2016-11-29 2018-05-31 Siemens Aktiengesellschaft Wind turbine
US11028820B2 (en) * 2019-10-10 2021-06-08 HangZhou JiangHe Hydro-Electrical Science & Technolo Tidal current generating unit
USD1011510S1 (en) * 2023-07-27 2024-01-16 Huanwen Pan Fan blade

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EP2683939A2 (fr) 2014-01-15
JP2014507599A (ja) 2014-03-27
WO2012119771A3 (fr) 2012-11-15
KR20140061302A (ko) 2014-05-21
WO2012119771A8 (fr) 2013-10-10
WO2012119771A2 (fr) 2012-09-13
CA2825235A1 (fr) 2012-09-13

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