EP2331812A1 - Centrale houlomotrice - Google Patents

Centrale houlomotrice

Info

Publication number
EP2331812A1
EP2331812A1 EP09818846A EP09818846A EP2331812A1 EP 2331812 A1 EP2331812 A1 EP 2331812A1 EP 09818846 A EP09818846 A EP 09818846A EP 09818846 A EP09818846 A EP 09818846A EP 2331812 A1 EP2331812 A1 EP 2331812A1
Authority
EP
European Patent Office
Prior art keywords
crankshaft
power plant
frame element
flange
wave power
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.)
Withdrawn
Application number
EP09818846A
Other languages
German (de)
English (en)
Other versions
EP2331812A4 (fr
Inventor
Heikki Paakkinen
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.)
Wello Oy
Original Assignee
Wello Oy
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 Wello Oy filed Critical Wello Oy
Publication of EP2331812A1 publication Critical patent/EP2331812A1/fr
Publication of EP2331812A4 publication Critical patent/EP2331812A4/fr
Withdrawn legal-status Critical Current

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
    • 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
    • F03B13/14—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 wave energy
    • F03B13/16—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 wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/20—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 wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" wherein both members, i.e. wom and rem are movable relative to the sea bed or shore
    • 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
    • F05B2250/30—Arrangement of components
    • F05B2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
    • F05B2250/313—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being perpendicular to each other
    • 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

Definitions

  • the invention relates to a wave power plant, comprising two frame elements with a limited movement relative to each other.
  • An object of the invention is to provide a new type of wave power plant, wherein the pendular movement of waves can be converted with a high efficiency directly into continuous rotary motion.
  • Fig. 1 is a perspective side view, showing a wave power plant according to one preferred embodiment of the invention.
  • Fig. 2 shows a crankshaft area of the same wave power plant in a larger scale.
  • the wave power plant of the invention is an apparatus, which utilizes ocean waves and converts the energy of waves into electrical energy or mechanical energy.
  • the wave power plant converts the movement of a wave directly into rotary motion.
  • the wave power plant consists of two frame elements 1, 2 and a crankshaft 3 interconnecting the two. From the crankshaft 3 is derived a power takeoff over a gear to a desired apparatus.
  • the crankshaft 3 can also have a generator 6 mounted directly thereon.
  • the vertical underwater frame element 1 of the power plant has a depth which is approximately a half of the average wavelength in the area.
  • the frame element 1 has its bottom portion provided with a heavy horizontal plate or flange 4 or some other form part, which opposes the up-and-down movement.
  • the number of plates or flanges 4 can be more than one and the shape thereof can be other than planar, e.g. the shape of a spherical cap, which has a different drag in opposite directions. If desired, it is also possible to employ a shape diverting the flow sideways for providing a lateral component force.
  • a top portion of the frame element 1 is flat and perpendicular to an incoming wave direction A.
  • the frame element's 1 top portion has a function of following the horizontal movement of a wave.
  • a total mass of the vertical frame 1, including that of the flange 4, is equal to a combined buoyancy of the vertical frame 1 and the flange 4.
  • the vertical frame 1 is connected at its top end to the power plant's floating horizontal frame element 2 by means of a crankshaft 3 which is crosswise to the incoming direction of waves.
  • the horizontal frame element 2 has also a length which about a half or less of the typical wavelength. Its end opposite to the crankshaft is provided with a vertical fin or flange 5, which is crosswise to the incoming wave direction A and extends from the frame element 2 downward over a substantial distance to below the water surface.
  • the number of fins or flanges 5 can be more than one and the shape thereof can be other than planar, e.g. the shape of a spherical cap, which has a different drag in opposite directions. If desired, it is also possible to employ a shape diverting the flow sideways for providing a lateral component force.
  • the fin or flange 5 pushes the frame element 2 in a direction opposite to the vertical frame element 1, the wave at the fin or flange 5 being as a rule in the opposite phase with respect to the wave present at the vertical frame 1.
  • the horizontal frame 2 has its crankshaft 3 side end moving up and down at an averagely quarter-cycle phase difference relative to the horizontal movement.
  • the crankshaft 3 develops vertical and horizontal reciprocating forces, which by virtue of their phase difference set the crank- shaft in rotating motion.
  • the rotating motion is synchronic according to a substantial wave.
  • the wave power plant is resonant according to a substantial wave frequency, thus improving efficiency.
  • the distance between the crankshaft 3 bearing lines is less than a half of the extent of wave movement, for example 20-60% thereof. Because the crankshaft, as a result of its dimensions, does not allow a full scale movement, the crankshaft 3 shall develop a major rotating force.
  • the distance between the crankshaft 3 bearing lines can be in such a way permanent that the crank- shaft 3 can be set at a desired stroke.
  • the distance between crankshaft bearing lines may also adjust by a spring, either against a spring force or by means of a spring force.
  • the necessary adjustment mechanisms and/or springs can be included in bracket members 3a present between the bearing lines.
  • the crankshaft 3 can be implemented in many ways in a single- or multi-piece component. What is essential is its ability to allow for the mutually adjacent ends of the frame elements 1, 2 to perform limited rotating motions which at the same time rotate the crankshaft 3.
  • the power plant is anchored securely to the seabed by means of a mooring cable 7, which is coupled to the vertical frame's 1 bottom end and which also carries therewith an electrical cable leading to mainland.
  • the apparatus is floating and finds a proper orientation for itself with the assistance of a surface flow generated by wind and swell.
  • the flange or fin 5 of the horizontal frame element 2 can be heavier than the amount of water displaced thereby, but the buoyant force of the horizontal frame element 2 prevents it from sinking.
  • the buoyant forces of the frame elements 1, 2 are preferably rated in such a way that in calm water the crankshaft 3 bearing lines settle at a substantially common level.
  • the crankshaft can be located partly or completely above the water level during opera- tion.
  • the power takeoff is implemented by means of an axle rotating on one of the crankshaft 3 bearing lines.
  • the flange or fin 5 of the horizontal frame element 2 can be adjustable in terms of its distance from the crankshaft 3.
  • the flange 4 of the vertical frame element 1 can also be adjustable in terms of its distance from the crankshaft 3.
  • the wave power plant includes preferably a computer-controlled RPM stabilizer for the crankshaft 3.
  • a wide-range fluctuation of the crankshaft's 3 rotating speed in some swell conditions can be a problem.
  • a large wave generates a rush which can be in a wrong phase with respect to the crankshaft's position and the next wave.
  • the computer-controlled RPM stabilizer monitors the crankshaft's rotating speed and allows for its variation within a set range, for example not more than 5%/cycle. If the rotating speed endeavors to increase faster than what has been set, the automatics shall increase the resistance of a generator.
  • the resistance of a generator 6 shall be reduced or the crankshaft's 3 rotating speed shall even be increased by feeding energy into the generator.
  • the rotating speed stabilizing system the rotation of the power plant's rotating parts is smoother and more continuous. Stoppages do not occur and thus the energy output is also increased.
  • a flywheel as an RPM stabilizer.
  • a massive, fast-rotating flywheel linked to the crankshaft by way of an increasing gear can be used as a stabilizer for RPM fluctuations the same way as the above-mentioned computer-controlled RPM stabilizer.
  • the generator 6 can be connected to the flywheel, which can be present in the same housing along with the generator 6.
  • the increasing gear can be continuously variable and the adjustment of gear ratio can be handled by automatics so as to achieve a sufficient RPM equalization for the crankshaft 3.
  • crankshaft's 3 phase angle in relation to a swell- generated movement of the frame elements be also optimized by means of computer control.
  • the computer-controlled phase angle optimizer is a system, which monitors the crankshaft's phase angle with respect to movements, accelerations and forces between the frame elements and which strives to maintain the phase angle averagely at an optimum. From the standpoint of energy yield, the most desirable condition would be reached if the ends of the frame elements in the vicinity of the axle lines should tend to move in a direction substantially perpendicular to a plane extending through the axle lines. In this condition, the crankshaft's 3 torque moment is at its maximum.
  • the computer-controlled phase angle optimizer may also receive advance information about an incoming wave from a wave height or acceleration measuring buoy/sensor placed at a specified distance in front of the apparatus in the incoming direction of a wave.
  • All of the described functions are related to the crankshaft's 3 rotation gen- erated by the movements of frame elements, such that said functions either promote the wave-generated movement of frame elements or independently convert the movement of waves into the movement of frame elements, the latter being in turn useful for rotating the crankshaft 3. Accordingly, various combinations of the presented functions are plausible or all of the functions can be utilized in a single floating power plant.
  • the described functions enable providing a stably mobile and high-yield power plant.
  • the power plant can be provided with a desired performance by selecting a breadth appropriate therefor.
  • the length, depth and the crankshaft's 3 measurements for the apparatus are determined by typical wave dimensions in a particular region.
  • a plurality of power plants can be arranged in parallel and in succession.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Transmission Devices (AREA)

Abstract

L’invention concerne une centrale houlomotrice comprenant deux éléments d’armature capables d’effectuer un mouvement limité l’un par rapport à l’autre. Les éléments d’armature (1, 2) sont reliés entre eux par un vilebrequin (3). Le premier élément d’armature (1) est vertical et sa partie inférieure est dotée d'un rebord horizontal lourd (4) ou d'une pièce d'une autre forme, qui fait opposition au mouvement de montée et de descente, et sa partie supérieure est plate et perpendiculaire à une direction d’arrivée des vagues (A). Le second élément d’armature (2) flotte dans une position horizontale et est doté d’un rebord ou d’une ailette (5) ou d’une pièce d’une autre forme, qui se trouve à une certaine distance du vilebrequin (3) et est transversal(e) à la direction d’arrivée (A) des vagues. Le mouvement rotatif du vilebrequin (3) est synchrone avec une période de vague importante. La centrale fonctionne de manière résonnante.
EP09818846.9A 2008-10-10 2009-09-29 Centrale houlomotrice Withdrawn EP2331812A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20085954A FI124961B (fi) 2008-10-10 2008-10-10 Aaltovoimala
PCT/FI2009/050777 WO2010040894A1 (fr) 2008-10-10 2009-09-29 Centrale houlomotrice

Publications (2)

Publication Number Publication Date
EP2331812A1 true EP2331812A1 (fr) 2011-06-15
EP2331812A4 EP2331812A4 (fr) 2015-06-10

Family

ID=39924599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09818846.9A Withdrawn EP2331812A4 (fr) 2008-10-10 2009-09-29 Centrale houlomotrice

Country Status (5)

Country Link
EP (1) EP2331812A4 (fr)
AR (1) AR073694A1 (fr)
CL (1) CL2009001950A1 (fr)
FI (1) FI124961B (fr)
WO (1) WO2010040894A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012011645A1 (fr) * 2010-07-21 2012-01-26 삼성중공업 주식회사 Appareil de production d'énergie houlomotrice

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB116372A (en) * 1917-07-24 1918-06-13 Henry Thomas Challis A Device to Gather Power from the Ocean for Transmission.
NO983419D0 (no) * 1998-07-24 1998-07-24 Ottersen Hans Olav Dobbelfaset vindb°lgemotor
CA2364522A1 (fr) * 2001-12-05 2003-06-05 Russell David Rothman Machine utilisant l'energie des vagues
US20060232074A1 (en) * 2005-04-18 2006-10-19 Mario Chiasson Apparatus for generating electric power using wave force
US7365445B2 (en) * 2006-03-21 2008-04-29 Frank Burcik Apparatus for converting ocean wave energy to electrical energy
US7327049B2 (en) * 2006-03-22 2008-02-05 Ron Hamburg Wave generator power plant
NZ551485A (en) * 2006-11-21 2009-06-26 Ind Res Ltd Wave energy converter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010040894A1 *

Also Published As

Publication number Publication date
FI124961B (fi) 2015-04-15
CL2009001950A1 (es) 2010-12-24
FI20085954A (fi) 2010-04-11
WO2010040894A1 (fr) 2010-04-15
AR073694A1 (es) 2010-11-24
FI20085954A0 (fi) 2008-10-10
EP2331812A4 (fr) 2015-06-10

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