WO2008085056A1 - Submerged darrieus turbine pivotally connected to the support structure - Google Patents

Submerged darrieus turbine pivotally connected to the support structure Download PDF

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Publication number
WO2008085056A1
WO2008085056A1 PCT/NO2007/000459 NO2007000459W WO2008085056A1 WO 2008085056 A1 WO2008085056 A1 WO 2008085056A1 NO 2007000459 W NO2007000459 W NO 2007000459W WO 2008085056 A1 WO2008085056 A1 WO 2008085056A1
Authority
WO
WIPO (PCT)
Prior art keywords
turbine
support structure
arrangement
accordance
power engine
Prior art date
Application number
PCT/NO2007/000459
Other languages
French (fr)
Inventor
Dagfinn RØYSET
Original Assignee
Lycro Creative Development As
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lycro Creative Development As filed Critical Lycro Creative Development As
Publication of WO2008085056A1 publication Critical patent/WO2008085056A1/en

Links

Classifications

    • 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"
    • F03B17/062—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 at right angle to flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/212—Rotors for wind turbines with vertical axis of the Darrieus type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/97—Mounting on supporting structures or systems on a submerged structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/23—Geometry three-dimensional prismatic
    • F05B2250/232—Geometry three-dimensional prismatic conical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/40—Movement of component
    • F05B2250/41—Movement of component with one degree of freedom
    • F05B2250/411—Movement of component with one degree of freedom in rotation
    • 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

Definitions

  • Submerged Darrieus turbine pivotally connected to the support structure
  • This invention relates to a Darrieus turbine. More particularly it concerns a submerged Darrieus turbine connected to a power engine, where the power engine is positioned on a sup- port structure, the Darrieus turbine being pivotably connected to the support structure.
  • Turbine Darrieus turbines, below being called “turbine”, are employed in a series of embodiments in fluids like wind and water. The turbines often rotate about a vertical axis, as opposed to many other types of turbines . Turbines wherein the blades run parallel to their axis of rotation are normally not self starting, as the blades do not exert a turning moment about the axis before they are given a velocity component in a direction perpendicular to the fluid flow direction.
  • the object of the invention is to remedy or reduce at least one of the prior art drawbacks .
  • a submerged turbine in accordance with the invention is connected to a power engine provided on a support structure, and is characterized by being pivotably connected to the support structure .
  • the shaft of the turbine is thereby exposed essentially to tension and torque, as bending moment is essentially absent.
  • the power engine which may be provided by for example an electric generator or a pump, may be permanently connected to the support structure, while the turbine is connected to the power engine by means of at least one coupling for example in the form of a universal joint or a constant speed coupling.
  • the power engine is pivotably connected to the structure.
  • the power engine may thus be positioned in a frame, as the power engine is pivotably connected to the frame about a principally horizontal first axis, while the frame is connected to the support structure by means of a second principally horizontal axis.
  • the second axis is perpendicular to the first axis.
  • the frame with the first and the second axes thereby provide a universal joint making deflections of the turbine, which is connected to the power engine, possible in arbitrary directions from the ver- tical axis.
  • the turbine may be assembled from multiple relatively short turbine parts to reduce the production cost of blades having adequate strength.
  • the blades may be slanted as described in prior art .
  • the turbine At its lower end the turbine is provided with a mass to limit deflection from the vertical axis.
  • the mass may constitute a part of the turbine or may e.g. be arranged under the turbine .
  • the support struc- ture When the turbine is to be used offshore, the support struc- ture is normally constituted by a floating, anchored structure. Inshore, it may be appropriate to have the support structure as a structure being fastened to the ground.
  • a turbine in accordance with the invention makes possible an essential increase in size of the turbine beyond prior art, and thereby also a possible increase in power output.
  • the invention opens for commercial exploitation of this type of turbine .
  • Fig. 1 shows schematically a turbine according to the invention
  • Fig. 2 shows in greater detail a fastening detail in an alternative embodiment.
  • the reference numeral 1 identifies a flow pump comprising a floating structure 2 with a pump 4 being driven by a turbine 6.
  • the floating structure 2 is by means of moorings 8 placed in a position on the water surface 10.
  • the turbine 6 rotating about a near vertical axis 12, is in this example of a preferred embodiment connected to the pump 4 by means of a coupling 14.
  • the coupling 14 can be provided by such as a constant speed coupling or one or more less costly universal joints.
  • the turbine is provided with a mass 16.
  • the turbine Due to the force of the water current 18 against the turbine 6, the mooring forces counteracting the force, the turbine will deflect to an angle relative to the vertical position. The deflection is limited by the mass 16 trying to swing the turbine 6 back to a vertical position, as the horizontal distance between the centre of gravity of the mass 16 and the coupling 14, multiplied by the weight of the mass 16, provides a rectifying torque.
  • the coupling 14 absorbs said deflection without bending mo- ments of any significance being transferred to the pump 4.
  • the pump 4 is pivo- tably suspended about a first horizontal axis 20 in a frame 22.
  • the frame 22 is pivotably suspended about a second horizontal axis 24 in the floating structure 2.
  • the second axis axis 24 is perpendicular to the first axis 20, whereby the frame 22 provides a universal joint between the pump 4 and the floating structure 2.
  • the pump 4 may thereby follow the deflections of the turbine 6 without transferring a bending moment to the floating structure 2.
  • the torque from the turbine 6 is of course transferred in the normal way.

Abstract

Arrangement of a substantially submerged Darreius turbine (4) being connected to a power engine (6), as the power engine (6) is positioned on a support structure (2), and wherein the Darreius turbine (6) is pivotally connected to the support structure (2).

Description

Submerged Darrieus turbine pivotally connected to the support structure
This invention relates to a Darrieus turbine. More particularly it concerns a submerged Darrieus turbine connected to a power engine, where the power engine is positioned on a sup- port structure, the Darrieus turbine being pivotably connected to the support structure.
Darrieus turbines, below being called "turbine", are employed in a series of embodiments in fluids like wind and water. The turbines often rotate about a vertical axis, as opposed to many other types of turbines . Turbines wherein the blades run parallel to their axis of rotation are normally not self starting, as the blades do not exert a turning moment about the axis before they are given a velocity component in a direction perpendicular to the fluid flow direction.
The problem related to self-starting can be overcome, according to Alexander M. Gorlov, by giving the blades a spiral form. US 5,133,637 show that somewhat slanted, straight blades can also lead to the turbine becoming self-starting.
Prior art submerged turbines are suspended in substantially three different ways:
They can be supported in an upper and a lower bearing. Supports of this type call for a relatively comprehensive bearing design. They can be supported at one end part thereof, see for example WO 82/04289. This support causes considerable bending forces in the turbine drive shaft and in the connection to e.g. a generator.
Finally, Gorlov suggests providing turbines along a rope type element extending between the sea floor and the surface. It is evident that a rope type element can only transmit an insignificant torque.
The object of the invention is to remedy or reduce at least one of the prior art drawbacks .
The object is achieved in the features given in the description below and in the following claims.
A submerged turbine in accordance with the invention is connected to a power engine provided on a support structure, and is characterized by being pivotably connected to the support structure .
The shaft of the turbine is thereby exposed essentially to tension and torque, as bending moment is essentially absent.
The power engine, which may be provided by for example an electric generator or a pump, may be permanently connected to the support structure, while the turbine is connected to the power engine by means of at least one coupling for example in the form of a universal joint or a constant speed coupling.
In an alternative embodiment, the power engine is pivotably connected to the structure. The power engine may thus be positioned in a frame, as the power engine is pivotably connected to the frame about a principally horizontal first axis, while the frame is connected to the support structure by means of a second principally horizontal axis. The second axis is perpendicular to the first axis. The frame with the first and the second axes thereby provide a universal joint making deflections of the turbine, which is connected to the power engine, possible in arbitrary directions from the ver- tical axis.
The turbine may be assembled from multiple relatively short turbine parts to reduce the production cost of blades having adequate strength. The blades may be slanted as described in prior art .
At its lower end the turbine is provided with a mass to limit deflection from the vertical axis. The mass may constitute a part of the turbine or may e.g. be arranged under the turbine .
When the turbine is to be used offshore, the support struc- ture is normally constituted by a floating, anchored structure. Inshore, it may be appropriate to have the support structure as a structure being fastened to the ground.
A turbine in accordance with the invention makes possible an essential increase in size of the turbine beyond prior art, and thereby also a possible increase in power output. Thus, the invention opens for commercial exploitation of this type of turbine .
In the following, an example of a preferred embodiment is described, which is illustrated in the enclosed drawings, wherein:
Fig. 1 shows schematically a turbine according to the invention; and
Fig. 2 shows in greater detail a fastening detail in an alternative embodiment. In the drawings the reference numeral 1 identifies a flow pump comprising a floating structure 2 with a pump 4 being driven by a turbine 6.
The floating structure 2 is by means of moorings 8 placed in a position on the water surface 10.
The turbine 6 rotating about a near vertical axis 12, is in this example of a preferred embodiment connected to the pump 4 by means of a coupling 14. The coupling 14 can be provided by such as a constant speed coupling or one or more less costly universal joints.
At its lower part, the turbine is provided with a mass 16.
When a flow current 18 flows against the turbine 6 and the turbine 6 is rotated, a torque is transferred to the pump 4 by the coupling 14. The pump 4 supplies pressurized liquid to conduits that are not shown
Due to the force of the water current 18 against the turbine 6, the mooring forces counteracting the force, the turbine will deflect to an angle relative to the vertical position. The deflection is limited by the mass 16 trying to swing the turbine 6 back to a vertical position, as the horizontal distance between the centre of gravity of the mass 16 and the coupling 14, multiplied by the weight of the mass 16, provides a rectifying torque.
The coupling 14 absorbs said deflection without bending mo- ments of any significance being transferred to the pump 4.
In an alternative embodiment, see fig. 2, the pump 4 is pivo- tably suspended about a first horizontal axis 20 in a frame 22. The frame 22 is pivotably suspended about a second horizontal axis 24 in the floating structure 2. The second axis axis 24 is perpendicular to the first axis 20, whereby the frame 22 provides a universal joint between the pump 4 and the floating structure 2.
The pump 4 may thereby follow the deflections of the turbine 6 without transferring a bending moment to the floating structure 2. The torque from the turbine 6 is of course transferred in the normal way.

Claims

C L A I M S
1. An arrangement of a substantially submerged Darreius turbine (6) being connected to a power engine (4), the power engine (4) being positioned on a support struc- ture (2), c h a r a c t e r i z e d i n that the Darreius turbine (6) is pivotably connected to the support structure (2) .
2. The arrangement in accordance with claim 1, wherein at least one coupling (14) is provided between the Dar- reius turbine (6) and the power engine (4) .
3. The arrangement in accordance with claim 2 , wherein the coupling (14) is a constant speed coupling.
4. The arrangement in accordance with claim 2, wherein the coupling (14) is a universal joint.
5. The arrangement in accordance with claim 1, wherein the power engine (4) is rotatably connected to the structure (2) .
6. The arrangement in accordance with claim 1, wherein the Darreius turbine (6) at its lower part is provided with a mass (16) .
7. The arrangement in accordance with claim 1, wherein the support structure is constituted by a floating structure (2) .
8. The arrangement in accordance with claim 1, wherein the support structure is fixed to the ground.
PCT/NO2007/000459 2007-01-11 2007-12-21 Submerged darrieus turbine pivotally connected to the support structure WO2008085056A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20070197 2007-01-11
NO20070197A NO325833B1 (en) 2007-01-11 2007-01-11 Darrieus turbine

Publications (1)

Publication Number Publication Date
WO2008085056A1 true WO2008085056A1 (en) 2008-07-17

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WO (1) WO2008085056A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2960266A1 (en) * 2010-05-19 2011-11-25 Centre Nat Rech Scient Vertical-axis marine turbine for generating electricity, has flexible bearing structure bearing vertical-axis turbine units and comprising cable including strands interlaced with each other to resist torsional stress
WO2012165444A1 (en) * 2011-06-01 2012-12-06 合同会社アルバトロス・テクノロジー Natural energy extraction apparatus
JP2013032773A (en) * 2011-07-05 2013-02-14 Albatross Technology LLC Natural energy extraction device
US20220120258A1 (en) * 2020-10-20 2022-04-21 Forcegenie, Llc Wind, wave, and water power generation system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO331612B1 (en) * 2010-09-01 2012-02-06 Erling Magnar Haug Underwater generating unit for electricity

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US4281965A (en) * 1979-05-07 1981-08-04 Stjernholm Dale T Cantilever mounted wind turbine
JPS5872677A (en) * 1981-10-27 1983-04-30 Nippon Electric Ind Co Ltd Electric generator with float system dalius type hydraulic turbine
US5324169A (en) * 1993-04-09 1994-06-28 Brown George L Oscillating, lateral thrust power generator
WO2000040859A1 (en) * 1999-01-06 2000-07-13 Water Power Industries As Turbine driven with a fluid medium
US20020197148A1 (en) * 2001-06-26 2002-12-26 Belinsky Sidney Irving Installation for harvesting ocean currents (IHOC)

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JPS6355370A (en) * 1986-08-22 1988-03-09 Akaho Yoshio Tidal power generating device using daryavaus type turbine
US6884020B2 (en) * 1999-01-06 2005-04-26 Water Power Industries As Turbine driven with a fluid medium
GB0120273D0 (en) * 2001-08-21 2001-10-10 Imp College Innovations Ltd Floating verticle-axis turbine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4281965A (en) * 1979-05-07 1981-08-04 Stjernholm Dale T Cantilever mounted wind turbine
JPS5872677A (en) * 1981-10-27 1983-04-30 Nippon Electric Ind Co Ltd Electric generator with float system dalius type hydraulic turbine
US5324169A (en) * 1993-04-09 1994-06-28 Brown George L Oscillating, lateral thrust power generator
WO2000040859A1 (en) * 1999-01-06 2000-07-13 Water Power Industries As Turbine driven with a fluid medium
US20020197148A1 (en) * 2001-06-26 2002-12-26 Belinsky Sidney Irving Installation for harvesting ocean currents (IHOC)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2960266A1 (en) * 2010-05-19 2011-11-25 Centre Nat Rech Scient Vertical-axis marine turbine for generating electricity, has flexible bearing structure bearing vertical-axis turbine units and comprising cable including strands interlaced with each other to resist torsional stress
WO2012165444A1 (en) * 2011-06-01 2012-12-06 合同会社アルバトロス・テクノロジー Natural energy extraction apparatus
JP2013032771A (en) * 2011-06-01 2013-02-14 Albatross Technology LLC Natural energy extraction apparatus
CN103562547A (en) * 2011-06-01 2014-02-05 合同会社信天翁科技 Natural energy extraction apparatus
US10047723B2 (en) 2011-06-01 2018-08-14 Albatross Technology LLC Natural energy extraction apparatus
JP2013032773A (en) * 2011-07-05 2013-02-14 Albatross Technology LLC Natural energy extraction device
US9284941B2 (en) 2011-07-05 2016-03-15 Albatross Technology LLC Natural energy extraction apparatus
US20220120258A1 (en) * 2020-10-20 2022-04-21 Forcegenie, Llc Wind, wave, and water power generation system
US11661921B2 (en) * 2020-10-20 2023-05-30 Forcegenie, Llc Wind, wave, and water power generation system

Also Published As

Publication number Publication date
NO325833B1 (en) 2008-07-28
NO20070197L (en) 2008-07-14

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