WO2007022549A2 - Turbine a ecrans d'eau - Google Patents

Turbine a ecrans d'eau Download PDF

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Publication number
WO2007022549A2
WO2007022549A2 PCT/ZA2006/000102 ZA2006000102W WO2007022549A2 WO 2007022549 A2 WO2007022549 A2 WO 2007022549A2 ZA 2006000102 W ZA2006000102 W ZA 2006000102W WO 2007022549 A2 WO2007022549 A2 WO 2007022549A2
Authority
WO
WIPO (PCT)
Prior art keywords
water wall
turbine
energy
blades
current
Prior art date
Application number
PCT/ZA2006/000102
Other languages
English (en)
Other versions
WO2007022549A3 (fr
Inventor
Lodewyk Michael Botha
Marek Andrzki Sredzki
Original Assignee
Lodewyk Michael Botha
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 Lodewyk Michael Botha filed Critical Lodewyk Michael Botha
Publication of WO2007022549A2 publication Critical patent/WO2007022549A2/fr
Publication of WO2007022549A3 publication Critical patent/WO2007022549A3/fr

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
    • F03B13/26—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"
    • F03B17/062—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
    • F03B17/063—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 the flow engaging parts having no movement relative to the rotor during its 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
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Definitions

  • This invention relates to Turbines for the Extraction of Energy from Currents, to be available for conversion into Electrical Energy.
  • the Invention further also relates to Renewable Energy Generation in a near 100% Eco- and Bio-friendly way.
  • the Invention further relates to small to large scale Renewable Energy Generation in an Economical way.
  • Geothermal has its massive Eco- and Bio-friendly features but its availability with present technology is limited to a few isolated spots around the globe.
  • Marine turbines can also not very effectively be used for Energy Extraction from Tidal Currents whereas; the Water Wall Turbine is ideally suited for this application.
  • the Water Wall Turbine by moving away from the conventional Marine Turbine approach and design, that concentrates on Kinetic Energy Extraction, is offering through it's design, a system that can Extract Potential Energy from Currents.
  • the Water Wall Turbine further offers a solution, to all significant Marine and Hydro Electric Turbines that have their Turbine Shafts totally submerged and are experiencing water pressure sealing problems, in that the Water Wall Turbine, with its Shaft, Gearbox and Generator well above water level, has no water sealing problems.
  • a further part of the Solution offered by the Water Wall Turbine in its application is that it will create its own Barrage effect due to the small negative relative speed difference between the Water Wall Turbine blades and the water, thus creating a 'Head" across its Blades, providing Potential Energy for Extraction.
  • Cables in one form or another, in some designs to transfer Forces due to the Extracted Energy, from the Blades to the Shaft to rotate the shaft.
  • the Superstructure consisting of the Shaft, Blades and Cables (where applicable), can be designed along normal Engineering principles and Manufactured from Engineering practical materials.
  • the further object offered with the Water Wall Turbine is that most of it can be constructed with low skilled workers.
  • It is a further object of this Invention is to provide the unique quick and non-invasive Construction and Installation features to ensure minimal Negative Environmental impact around the site during construction and commissioning by means of modular pre- fabrication of the Water Wall Turbine off site.
  • FIG. 1 This Figure shows an End View of a typical design of a Water Wall Turbine indicating Cables, Blades, and Shaft.
  • FIG. 2 This Figure shows a Side View of a Water Wall Turbine in FIG. 1.
  • FIG. 3 This Figure shows an Isometric View of a Water Wall Turbine, showing the Shaft and Blades without Cabling. It should be noted that Cabling will be employed as and when required by the design. The same goes for flotation sections in the Blades.
  • the Water Wall Turbine Construction consists of a Shaft 3, with radiating Blades 1 around it, and in some designs, be stabilized by Cables 2, and the Cables also act as instruments to transfer the Power extracted from the Current to the Shaft 3, as in cases where Cables are employed as required by the design.
  • the Water Wall Turbine is designed and constructed along normal sophisticated Engineering practices, and with the most practical materials.
  • the different elements of the Turbine can be constructed and/or fabricated from any Material that could effectively fulfill its purpose in an Engineering sense.
  • the Water Wall Turbine is a novel method and design for the Extraction of Potential, as well as Kinetic Energy from a Current.
  • the Water Wall Turbine structure in the main consists of the Shaft and Blades, and sometimes as may be required by the design Cables, and Flotation sections in the Blades.
  • the Water Wall Turbine operates:
  • the Water Wall Turbine is designed to be absolutely Eco- and Bio-friendly by developing its own Barrage effect (the development of a Head across the Turbine) due to its physics, dimensions and operation.
  • This pressure difference is the result of the Blades acting as restriction to the Current, causing a Head to form across the Blades.
  • This Head represents the Potential Energy Force that is hydraulically propagated across the submerged Blade area.
  • the Water Wall Turbine utilizes the features of water to convert the Current Kinetic Energy, virtually lossless, into Potential Energy, and vice versa, therewith allowing the Current to build up behind its Blades (like water behind a dam wall) to be available as Potential Energy for harvesting.
  • the Water Wall Turbine consists of a shaft with a number of large Blades, joined to the Shaft, parallel to and along the length of the Shaft 3, and evenly distributed around the Shaft, and radiating outwards. (See FIG. 1 and FIG. 2)
  • the shaft is positioned Horizontal (in most cases), and perpendicular to the Current, with the bottom side of the Water Wall Turbine Blades immersed into the Current, and with the Shaft above the water level. (See FIG. 1)
  • the Water Wall Turbine can operate in very deep waters, but the optimal performance, under similar Current speeds, will be under conditions where the Blades can successfully effect a restriction to the flow like a dam wall would, i.e. distance between floor and lowest path of blade tip should be as small as practical possible to develop the Maximum "Head" across the Turbine.
  • the structural stabilizing Cables of the Water Wall Turbine are simultaneously employed to transfer the Power, exerted by the Current and Current levels on the blades, to the shaft, for rotation.
  • a typical Water Wall Turbine will consists of an shaft with a number of Longitudinal Blades radiating outwards along a length of the shaft, and in the case of larger Turbines, "Structural and Power Transferring" cabling. (See FIG. 1 , FIG. 2)
  • the Blades may or may not be:
  • Cables may or may not be employed for structural rigidity or the transfer of power to the shaft, depending on the requirements as per design and Materials used.
  • the shaft may or may not be part of the modular pre-fabrication of the Blades as and if required as per design.
  • a Water Wall Turbine can be massive and can replace numerous conventional Marine Current Turbines at a time.
  • a Water Wall Turbine will need a fraction of the effective sq km, or Current cross section required for Conventional Marine Turbine deployment, for the same Power output.
  • the Rotation speed of the Water Wall Turbine is typically under 1 rpm compared to the order of 10 to 20 rpm of Current Marine Turbines.
  • the Water Wall Turbine Blade tip speed relative to the water speed is actually slightly negative, but for all practical purposes we can approach it as 0 (zero), compared to ⁇ 15 m/s Blade tip speed, relative to water speed, of Current Marine Turbines.
  • the shaft of the Water Wall Turbine is perpendicular to the Current direction, whereas the conventional Marine Turbine shaft is parallel to the Current direction.
  • a Water Wall Turbine can be used in Tidal Currents of depths that vary at Low tide from Om (Zero meters) to High Tide of 17m and more, whereas Marine Turbines only will work with special adaptations to the terrain to ensure that the whole Turbine is constantly submerged with the result that Current speed will have to be sacrificed.
  • Each module of a large Turbine can, typically consist of one blade and one sector of the shaft.
  • the Blades will still be Modular but the Shaft may also be a prefabricated module.
  • the Modules can be floated or transported over land to the final destination, assembled and positioned in situ, or
  • the Water Wall Turbine can be assembled at any comfortable site and, whichever method is preferable, floated or Transported to the final destination if allowed by the water depth en route.
  • Maintenance can also be done in the slack period of at High or low Tide. In Canals the Turbine can be lifted to allow free flow of Current underneath it.
  • “Current” refers to Currents such as Fresh Water Currents, Marine Currents, or any other Current such as an Air Current, etc. that moves as a result of an Energy Potential difference between two points.
  • Barrage refers to an artificial obstruction erected across an Estuary or a River or a Marine Current, in order to influence the Tidal effect or water flow for Electricity Generation when the water levels differ across the Barrage.
  • Bio- refers to the Animal domain and Animal life that are mostly larger than Micro Organisms.
  • Blade area refers to the area that the rotating blades described during their rotations.
  • “Vertical-Blade-depth” means "the maximum blade tip depth” of the bottom vertical positioned Blade under the Head.
  • Blade-length is the length of the blade radiating outwards from the Shaft.
  • Blade Width is the width of the blade measured parallel to the Shaft.
  • Eu-system maintains its normal definition.
  • Energy Extraction is the transfer of Potential Energy and/or Kinetic Energy from the Current to the Water Wall Turbine shaft.
  • “Flotation” device or section refers to the three dimensional clad and sealed sections of the Blades that apart from adding to structural strength will provide floating capabilities to the Blade module.
  • Hydro Electric turbines refers to the Turbines used in Hydro Electric Schemes in dammed up rivers or barraged water.
  • Windmill type Turbines which are effectively submerged Wind Generator Turbines, and are currently in use for Energy Extraction from Marine Currents.
  • the Water Wall Turbine refers to our new patented Turbine Design, i.e. the rotating structure semi (less than 50%), submerged in the current, and consisting of Blades, Cables, Shaft, etc. without the Bearings, Gearbox, Alternator, etc.
  • Turbine has the normal meaning of a “cylindrical structure” that is rotated by means of an air or water current, flowing from a higher to a lower Energy Potential through the Turbine.
  • Tidal zones are those areas with high enough Tidal range for Energy Generation.

Landscapes

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

Abstract

L'invention concerne une turbine à écrans d'eau se présentant sous la forme d'un dispositif turbine comprenant des aubes, des câbles, un arbre et éventuellement des parties de flottaison dans les aubes pour l'extraction d'énergie (énergie potentielle et cinétique) à petite échelle (à partir d'une valeur inférieure à 1 KW) et à grande échelle (plusieurs MW) à partir de courants et pour la conversion de cette énergie en énergie mécanique qui est ensuite convertie en énergie électrique. Cette turbine à écrans d'eau est conçue pour la production d'énergie renouvelable de manière optimale sur le plan de l'écocompatibilité et de la biocompatibilité, dans la mesure où elle rend les barrages redondants grâce à ses aubes de grandes dimensions qui se déplacent pratiquement la même vitesse que le courant. Cette turbine à écrans d'eau est une structure cylindrique immergée à moins de 50 % dans le courant et conçue pour recueillir l'énergie rendue disponible par la tête induite à travers les aubes, au moyen de ces dernières qui tournent uniquement à une vitesse inférieure à celle du courant pendant l'extraction d'énergie du courant.
PCT/ZA2006/000102 2005-08-18 2006-08-18 Turbine a ecrans d'eau WO2007022549A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2005/1445 2005-08-18
ZA200501445 2005-08-18

Publications (2)

Publication Number Publication Date
WO2007022549A2 true WO2007022549A2 (fr) 2007-02-22
WO2007022549A3 WO2007022549A3 (fr) 2007-09-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2006/000102 WO2007022549A2 (fr) 2005-08-18 2006-08-18 Turbine a ecrans d'eau

Country Status (3)

Country Link
CA (1) CA2546897C (fr)
WO (1) WO2007022549A2 (fr)
ZA (1) ZA200709738B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2443697A (en) * 2006-11-10 2008-05-14 Robert James Siddall Floating water wheel with buoyant blades
US11319920B2 (en) 2019-03-08 2022-05-03 Big Moon Power, Inc. Systems and methods for hydro-based electric power generation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1327745A (en) * 1914-07-20 1920-01-13 Wilber H Tharp Current-motor
US4270056A (en) * 1980-02-15 1981-05-26 Wright Oliver D Undershot current motor
ES2049600A2 (es) * 1991-10-04 1994-04-16 Sanchez Doncel Instalacion hidraulica generadora de energia.
JP2000064939A (ja) * 1998-08-21 2000-03-03 Akiji Matoba 水車発電機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1327745A (en) * 1914-07-20 1920-01-13 Wilber H Tharp Current-motor
US4270056A (en) * 1980-02-15 1981-05-26 Wright Oliver D Undershot current motor
ES2049600A2 (es) * 1991-10-04 1994-04-16 Sanchez Doncel Instalacion hidraulica generadora de energia.
JP2000064939A (ja) * 1998-08-21 2000-03-03 Akiji Matoba 水車発電機

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2443697A (en) * 2006-11-10 2008-05-14 Robert James Siddall Floating water wheel with buoyant blades
US11319920B2 (en) 2019-03-08 2022-05-03 Big Moon Power, Inc. Systems and methods for hydro-based electric power generation
US11835025B2 (en) 2019-03-08 2023-12-05 Big Moon Power, Inc. Systems and methods for hydro-based electric power generation

Also Published As

Publication number Publication date
CA2546897C (fr) 2011-07-26
CA2546897A1 (fr) 2007-02-18
ZA200709738B (en) 2009-08-26
WO2007022549A3 (fr) 2007-09-27

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