AU2019229456A1 - Underwater Floating Turbine which transforms Ocean current, Tidal and Wave kinetic energy into mechanical energy - Google Patents

Underwater Floating Turbine which transforms Ocean current, Tidal and Wave kinetic energy into mechanical energy Download PDF

Info

Publication number
AU2019229456A1
AU2019229456A1 AU2019229456A AU2019229456A AU2019229456A1 AU 2019229456 A1 AU2019229456 A1 AU 2019229456A1 AU 2019229456 A AU2019229456 A AU 2019229456A AU 2019229456 A AU2019229456 A AU 2019229456A AU 2019229456 A1 AU2019229456 A1 AU 2019229456A1
Authority
AU
Australia
Prior art keywords
blade
accordance
blades
pylons
turbine
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
AU2019229456A
Inventor
Kostiantyn Naumenko
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.)
Individual
Original Assignee
Individual
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
Priority claimed from AU2018903476A external-priority patent/AU2018903476A0/en
Application filed by Individual filed Critical Individual
Publication of AU2019229456A1 publication Critical patent/AU2019229456A1/en
Abandoned 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
    • F03B13/22—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 flow of water resulting from wave movements to drive a motor or turbine
    • 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
    • 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
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—Kind or type liquid, i.e. incompressible
    • 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
    • F05B2220/00—Application
    • F05B2220/30—Application in turbines
    • F05B2220/32—Application in turbines in water turbines
    • 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
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/301—Cross-section characteristics
    • 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
    • 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

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)
  • Hydraulic Turbines (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The invention relates to an underwater turbine with vertical axis of rotation comprising blades having an inclined position relative to the vertical axis and when rotating around the axis of the turbine form an inverted truncated cone, where the diameter of the circle traced by the upper end of the blade is greater than the diameter of the circle traced by the lower end of the blade by the same ratio as the one between velocity of the water flow at the top of the blade and velocity of the water flow at the bottom of the blade. Fig.7 Cross-section of pylon a b Fig.8 Axis of rotation Blade, Pylon0

Description

Underwater Floating Turbine which transforms Ocean current, Tidal and Wave kinetic energy into mechanical energy [0001] The world's oceans are a vast source of renewable energy that is typically more predictable than wind and solar power. Ocean kinetic energy resources include ocean current energy, tidal energy and wave energy as well.
[0002] Proposed turbine will be able to transform kinetic energy of any type of natural water flow - horizontal, vertical, as well as diagonal (as caused by tides, or waves, or movement of the thermal water layers) into mechanical energy.
[0003] Proposed turbine can also transform the kinetic energy of neighboring water layers moving in different directions. For example, the upper part of the turbine blades are in a flow that moves to the shore, and the lower part of these same blades are in a flow that moves from the shore.
[0004] Proposed turbine has a vertical axis of rotation, it is located underwater and is suspended from a floating platform so that the upper ends of its blades do not go out of the water into the air at any wave height (Fig.l).
[0005] It is known that the speed of the flow of water going over the blade is formed from two speeds - the speed of the flow of water and the speed of the blade (Fig.2).
[0006] It is known that the speed of all natural flows of water decreases with increase in depth (friction between layers of water and pressure from upper layers) - (Fig.3).
[0007] Since the upper and lower parts of a vertical blade (Fig.3) have the same speed of rotation, and the flow rate of water at the top and bottom is different, the angle of attack (a °, Fig.l) on the top of the blade will be greater than the angle of attack at the bottom of the blade. The variable angle of attack along the blade does not allow it to generate the optimal force, which rotates the turbine, and causes asymmetrical loading of the blade and the entire turbine. Non-optimal and asymmetrical loading of the blade reduces its hydrodynamic capabilities and is a source of vibrations and shaking.
[0008] In order to have an optimal angle of attack (a0) along the entire blade, it is necessary to reduce the linear velocity of the bottom part of the blade. In the proposed turbine, this is achieved by an inclined position of the blade relative to the vertical axis — as the blade rotates, it describes an inverted truncated cone (Fig.4).
2019229456 20 Nov 2019 [0009] The angle of the inclination of the blade should be chosen in such a way that the ratio between the diameters of the upper and lower circles traced by the blade movement is identical to the ratio between the velocity of the water flow at the top of the blade and velocity of the water flow at the bottom of the blade.
[0010] It is known that the slower the speed of the oncoming water flow, the smaller the force generated by this flow. Thus, the inclined position of the blade leads to a decrease in hydrodynamic force on the lower part of the blade. A uniform distribution of force along the inclined blade can be achieved by increasing the area of the lower part of the blade.
[0011] Therefore, on the proposed turbine, the blades will have a trapezoidal shape - the lower chord of the blade is larger than the upper chord (Fig.5) by the same ratio as the ratio between the square of the speed of the incoming water flow to the lower end of the blade is lower than the square of the speed of the incoming water flow to the upper end of the blade (bt/bu = S2u/S2l, where bi. is the lower chord, bu is the upper chord, Su is the speed of the incoming flow to the upper chord, Sl is the speed of the oncoming water flow to the lower chord).
[0012] It is known that in windy weather, when the waves on the sea surface are moved by the wind, the upper and lower layers of water move in opposite directions (the upper layers are directed toward the coast, and the lower ones from the shore).
[0013] In spite of this, the upper and lower parts of the proposed blades, placed in such flows, will generate a torque directed in one direction (Fig.6 - a top view of the blade is shown).
[0014] In Fig.6, you can see that the flow of water to the upper part of the blade comes from the left, and to the lower part comes from the right. The upper part of the blade generates a force Fuz and the lower part generates a force FL. The forces are directed almost in opposite directions, but the torque generated by them is directed in one direction.
[0015] It is known that in water bodies during the cold season or at night, vertical mixing of water layers occurs caused by temperature differences. Vertical flows interacting with horizontal ones form diagonal flows. In order for the blade to generate hydrodynamic force, the flow of water must cross the blade. In the vertical and diagonal flows there will be segments where the flow does not intersect the blade, but slides along it. In these segments, the blade will not be able to generate the driving force. In the proposed turbine, horizontal pylons begin to generate driving force (similar to a propeller) in the vertical and diagonal streams, helping the blades (Fig.7).
2019229456 20 Nov 2019 [0016] Fig.7 shows the cross section of the pylon. On a, the flow moves from top to bottom and is summed with the vector of velocity of the movement of the pylon, b shows a stream moving upwards. In both cases pylon works as a propeller.
[0017] In both cases, the total combined flow generates a force F, whose horizontal projection is directed in the direction of rotation of the turbine and helps the blades.
[0018] In order for a pylon to generate an auxiliary force F its cross-sectional shape must have the form of a symmetrical hydro / aerodynamic profile.
[0019] On the proposed turbine, depending on its size, the blades can be attached to the shaft by one, two or three horizontal pylons as shown in Fig.8.
[0020] In order to make the assembled underwater turbine easier to deliver to the place of anchoring, to make it easier to mount to a floating platform, to make it easier to anchor and to ensure that the bearings on the shaft have a long service life, the weight of the underwater turbine (blades, pylons and shaft) must be compensated by buoyant Archimedean force.
Description of the illustrations:
Figure 1 is a perspective view of proposed underwater turbine suspended from a floating platform.
Figure 2 is a cross sectional view of blade with water flow speed vectors.
Figure 3 is a view on vertical blade in typical water flow.
Figure 4 is a front and top view on blade mounted in the proposed underwater turbine.
Figure 5 is a plan view on the blade.
Figure 6 is a top view on forces generated by blade in neighboring water layers moving in different directions.
Figures 7a and 7b is a cross section of the pylon in the instance where it works as propeller blades.
Figure 8 is a front view on blade with pylons.

Claims (9)

  1. Claims
    Underwater turbine with vertical axis of rotation (Fig. 1), consisting of a minimum of 3 blades (1) connected by pylons (2) to a vertical shaft (3), characterized in that:
    1. The blades have an inclined position relative to the vertical axis and when rotating around the axis of the turbine form an inverted truncated cone, where the diameter of the circle traced by the upper end of the blade is greater than the diameter of the circle traced by the lower end of the blade by the same ratio as the one between velocity of the water flow at the top of the blade and velocity of the water flow at the bottom of the blade.
  2. 2. Blades in accordance with paragraph 1, have a variable chord - chord of the lower end is larger than the chord of the upper end by the same ratio as the one between the square of the speed of the incoming water flow to the lower end of the blade is less than the square of the speed of the incoming water flow to the upper end of the blade.
  3. 3. Blades (1), in accordance with paragraphs 1 and 2, are attached to the vertical shaft (3) by means of horizontal pylons (2).
  4. 4. Each blade (1), in accordance with paragraphs 1, 2 and 3, can be attached to the vertical shaft (3) by one, two or three pylons (2).
  5. 5. Blades (1), in accordance with clauses 1, 2, 3 and 4 can be equipped with a Pitch Control mechanism.
    2019229456 20 Nov 2019
  6. 6. The turbine shaft (3), in accordance with paragraphs 3 and 4, is fixed on a floating semi-submerged platform.
  7. 7. Pylons (2), in accordance with paragraphs 3 and 4, can be attached to the blade (1) in its geometric center, or close to the ends of the blade, or close to the ends and in the center of the blade at the same time.
  8. 8. The pylons (2), in accordance with paragraphs 3, 4 and 7, have a cross-sectional shape in the form of a symmetrical hydro/aerodynamic profile.
  9. 9. Weight of the underwater turbine (blades, pylons and shaft in accordance with paragraphs 1 - 8) is compensated by the buoyant Archimedean force.
AU2019229456A 2018-09-14 2019-09-13 Underwater Floating Turbine which transforms Ocean current, Tidal and Wave kinetic energy into mechanical energy Abandoned AU2019229456A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2018903476A AU2018903476A0 (en) 2018-09-14 Turbine converting Tidal & Wave kinetic energy into mechanical energy simultaneously.
AU2018903476 2018-09-14

Publications (1)

Publication Number Publication Date
AU2019229456A1 true AU2019229456A1 (en) 2020-04-02

Family

ID=69994605

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2019229456A Abandoned AU2019229456A1 (en) 2018-09-14 2019-09-13 Underwater Floating Turbine which transforms Ocean current, Tidal and Wave kinetic energy into mechanical energy

Country Status (1)

Country Link
AU (1) AU2019229456A1 (en)

Similar Documents

Publication Publication Date Title
AU746011B2 (en) Extracting power from moving water
EP2831408B1 (en) Vertical axis wind and hydraulic turbine with flow control
CA2599120C (en) Device for maintaining a hydraulic turbomachine
JP2019152212A (en) System and method for improvement type water rotor
CA2614864C (en) The ocean wave energy converter (owec)
JP2007515588A5 (en)
JP2007515588A (en) Articulated fake seabed
US8439641B2 (en) Flow driven engine
US20140042749A1 (en) Ocean floor mounting of wave energy converters
WO2015059772A1 (en) Power generation device utilizing water flow energy
US9309861B1 (en) Ocean wave kinetic energy conversion method and system
KR100948788B1 (en) Floating multi wind-turbine
EP0767876B1 (en) Offshore wind-/wave-energy converter
JP2014001689A (en) Power generation device utilizing water flow energy
AU2004208073A1 (en) A screw turbine device
US20140322012A1 (en) Flow Driven Engine
WO2019190387A1 (en) A floating vertical axis wind turbine with peripheral water turbine assemblies and a method of operating such
US20170175703A1 (en) Apparatus For Converting Or Absorbing Energy From A Moving Body Of Water
AU2019229456A1 (en) Underwater Floating Turbine which transforms Ocean current, Tidal and Wave kinetic energy into mechanical energy
JP2023106292A (en) Floating body of ocean wind power generator
GB2549283A (en) Ocean wave kinetic energy conversion method and system
US20240141865A1 (en) Power plant
KR20110047089A (en) Multy Screw Type Hydraulic Turbine
KR20150082140A (en) Tidal current power generation system by wave tolerative multiple floating turbine

Legal Events

Date Code Title Description
MK5 Application lapsed section 142(2)(e) - patent request and compl. specification not accepted