GB2573153A - Water turbine - Google Patents
Water turbine Download PDFInfo
- Publication number
- GB2573153A GB2573153A GB1806862.7A GB201806862A GB2573153A GB 2573153 A GB2573153 A GB 2573153A GB 201806862 A GB201806862 A GB 201806862A GB 2573153 A GB2573153 A GB 2573153A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drive
- wheel
- water turbine
- paddle
- alternator
- 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- Withdrawn
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
- F03B17/065—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 a cyclic movement relative to the rotor during its rotation
-
- 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
- F05B2240/932—Mounting on supporting structures or systems on a structure floating on a liquid surface which is a catamaran-like 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
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
A water turbine 1 comprises a wheel 3 mounted on a support frame 2 which may be mounted on floats (10, fig.3). The wheel (3) is drivably connected, eg via a chain or gear drive transmission (6, fig.1) and gearbox (7), to an alternator (8) to generate electricity. A plurality of circumferentially spaced-apart drive paddles 4 are pivotally mounted on the wheel for movement between a drive position projecting radially outwardly of the wheel 3 to be driven by the water stream and an inoperative neutral position in which the drive paddles 4 lie against the wheel 3. Each paddle 4 may be rectangular, pivotally mounted on a shaft 24 and limited in its outward movement into the drive position by flexible straps 28 extending between the wheel 3 and the paddle 4. The wheel 3 may comprise a pair of rings (16, fig.3) spaced apart on a drive shaft (18).
Description
“Water Turbine’·
Introduction
This invention relates to a water turbine.
Water turbines ate well known and are used to generate etectdctty or drive other machinery - such as a mill wheel, for example. The present invention is particularly concerned with a floating water turbine. A typioaf water turbine construction include® Q water wheel with a plurality of spacechapad radial paddies which are engaged by a water stream to rotate the water wheel in order to generate power. However, as each paddle lifts out of the water stream, there is a drag effect as the paddle lifts water from the stream which adversely affects the efficiency of the water turbine
The present invention is directed towards overcoming fhts problem.
Summary of the Invention
According to the invention, there Is provided a water turbine for generating electricity, composing: a support frame, a wheel rotatably mounted on the support frame, a plurality of spaced-apart drive paddles on the wheel, the wheel drivabiy connected to a drive shaft of an alternator, wherein each drive paddle Is movable on the wheel between a drive position and an inoperative neutral position. in one embodiment of the Invention, each drive paddle >s foldable between the drive position and the neutral position. in another embodiment, each drive paddle Is pivotably moveable between the drive position and the neutral position.
In another embodiment, the drive paddle projects radially outwardly of the wheel when In the drive position and lies against the wheel in the neutral position.
In another embodiment, a drive paddle position controller is provided to limit movement of the drive paddle from the neutral position to the drive position.
In another embodiment, the drive paddle position controller is a flexible strap extending between the wheel and the drive paddle.
In another embodiment, the wheei comprises a pair of rings mounted spaoed-apart on a drive shaft which is rotatably mounted on the support frame, and each dnve paddle comprises a fir? projecting outwardly from a support collar, the support collar pivotably mounted on a complementary pivot shaft extending between the rings parallel to the drive shaft.
In another embodiment, the length of the fin is about half the diameter of the wheel.
In another embodiment, the support frame Is mounted on a float.
In another embodiment, a drive wheel is mounted on the drive shaft for driveable connection to the alternator in another embodiment, the drive wheel is connected to the alternator through a gear drive.
In another embodiment, the dove wheei is connected to the alternator through a chain drive.
The invention will be more clearly understood by the following description of some embodiments thereof, giver? by way ci example only, with reference ίο the accompanying drawings, in which:
Fig- 1 is a schematic illustration of a water turbine according io he invention;
Fig. 2 is a detail schematic illustration of the water turbine of the invention;
Hg, 3 is a schematic perspective view of a water turbine according to the invention; and
Fig. 4 is a detail perspective view of portion of the water turbine shown in Fig. 3.
Detailed Description of the Preferred Embodiments
Referring to the drawings, there is illustrated a water turbine according to the invention, indicated generally by the: reference numeral 1. The; water turbine 1 comprises a support frame 2. A. wheel 3 is rotatably mounted or? the support frame 2. A plurality of spaced-apart dnve paddles 4 are provided circumferentially spaced-apart on the wheel 3. The wheel 3 Is dnvabiy corrected by means of s drive transmission g through a gearbox 7 with an alternator 8. It will be noted that each drive paddle 4 is pivotally movable on the wheel 3 between a drive position projecting radially outwardly of the wheel 3 and an inoperative neutral position in which the drive paddle 4 lies against the wheel 3 in a tangential position.
Referring In particular to Fig. 3 the frame 2 is a rectangular frame mounted between a pair of spaced-apart floats 10. The frame 2 has side members 11 extending along a top 12 of each float 10, Cross members 14 extend between the side members 11 to form a rigid rectangular support frame 2
The wheel 3 comprises as pair of rings 16, 17 mr.ium.ed spaced-apart on a drive shaft 18. Each end of the drive shaft 18 Is rotatably mounted in a bearing 19, 20 mounted or? one of the side members 11 of the support frame 2,
Each drive paddle 4 comprises a rectangular fin 22 which projects outwardly iron; a fubufer support collar 23. The support collar 23 is pivotably mounted on a complementary pivot shaft 24 which extends between the rings 18, 17 and is secured to each ring 16, 17 by a mount 26, Thus each pivot shaft 24 is parallel to the drive shaft 18,
Referring -n particular to Fig. 2 and Fig. 4, it can be seer? that each drive paddle 4 is pivotably moveahte between a drive position projecting radially outwardly of the wheel 3 and a folded neutral position lying against the wheel 3. A drive paddle position controller comprises a flexible strap 28 extending between the wheel 3 and the fin 22 of the drive paddle 4. Two flexible straps 28 are provided, one at each end of the fin 22, and they limit outward movement of the fin 22 into the drive position to correctly position the fin 22 for rotating the wheel 3.
As can be seen in Fig. 2 as the drive paddle 4 lifts out of the wafer If will pivot and hang downwardly and fold inwardly against the wheei 3 and thus It will not lift any water as it lifts out of the water stream within which the wafer turbine 1 is mounted. With the wheel 3 rotating ·η direction X (anti clockwise} In Fig. 2, when in quadrant A the drive paddle 4 will extend radially outwardly from the wheel 3. As the dnve paddie 4 moves through quadrant 8 it will hang vertically downwardly thus not nicking up any water from: the water stream. A drive wheel 30 is mounted at one end of the drive shaft 18. Fig. 3 shows the drive train 6 as a series of drive chains and sprockets connected between the drive wheel 30 and a drive shaft 32 of the alternator 8. However other drive transmissions such as a gear train could also be used. Power cables 34 from the alternator 8 deliver power generated by the alternator wherever required, for operating machinery or charging batteries for example, A protective cover 38 may be provided to fit over the support frame 2 and apparatus mounted thereon.
In use, the wafer turbine 1 is located In a stream and anchored or tied in position. A water stream passing between the floats 10 will engage each paddle 4 as It drops into the water stream and thus rotate the wheei 3 which in turn through the drive transmission 6 drives the alternator 8 to generate power. It will be noted that as each paddle 4 enters the water stream it is in the drive position, that is extending radially outwardly from the wheei 3 so that the water stream pushes the paddle 4 and thus rotates the wheel 3. As the peddle 4 sifts out of the water stream It folds back against the wheel 3 so that It does not lift water with it as It exits the wafer stream If will be appreciated that this greatly enhances the eff-cienoy of the water turbine of the invention.
While the present Invention is primarily concerned with floating water turbines, It is envisaged that the water turbine of the invention could be rotatably mounted on a channel through which a wafer stream is delivered such that the wafer stream engages the drive paddles 4 at a bottom of the water wheel 3 in similar fashion to a floating water larmne.
In the specification the terms ''comprise, comprises, comprised and comprising" or any variation thereof and the terms "include, inoludes, included and Including” dr any variation thereof are considered to be totally interchangeable and they should all be afforded the widest possible interpretation and vice versa.
The invention is hot limited the embodiments hereinbefore and described which may be varied in both construction and detail within the scope of the appended claims.
Claims (11)
- Ct&BS1. A wafer turbine for generating electricity comprising: a support frame. a wheel rotatably mounted on the support frame.. a plurality of spaced-apart drive paddies on the wheel, the wheel drivabiy connected to a drive shaft of an alternator, wherein each drive paddle is moveable on the wheel between a drive position and ran Inoperative neutral position.
- 2. The water turbine as claimed >n claim 1 wherein each drive paddle Is foldable between the drive position and the neutral position.
- 3. The water turbine as claimed in claim 1 or claim 2 wherein each drive paddle >s pivotably moveable between the drive position and the neutral position.
- 4. The water turbine as claimed in any preceding claim wherein the drive paddle projects radially outwardly of the wheel when in the drive position and ttes: against the wheel in tris neutral position.
- 5. The water turbine as claimed in any preceding claim wherein a drive paddle position controller is provided to limit movement of tire drive paddle from the neutral position to the drive position.
- 6. The water turbine as claimed in claim 5 wherein the drive paddle position controller is a flexible strap extending between the wheel and the drive paddle.
- 7. The water turbine as olaimed in any preceding claim wherein the wheel comprises a pair of rings mounted spaced-apart on a drive shaft which is rotatably mounted on the support, frame, and each drive paddle comprises a fin projecting outwardly from a support collar. the support collar pivotably mounted on a complementary pivot shaft extending between the rings parallel to the drive shaft.
- 8, The water turbine as claimed In claim 7 wherein the length of the ήη is about half the diameter of the wheel. S, The water turbine as claimed in any preceding claim wherein the support frame is mounted on a float.
- 10. The wafer turbine as claimed in any preceding claim wherein a drive wheel is mounted on the drive shaft for driveable connection to the alternator.
- 11. The water turbine as claimed in claim 10 wherein the drive wheel is connected to the alternator through a gear drive.
- 12. The water turbine as claimed in claim 10 wherein the drive wheel Is connected to the alternator through a chain drive.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1806862.7A GB2573153A (en) | 2018-04-26 | 2018-04-26 | Water turbine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1806862.7A GB2573153A (en) | 2018-04-26 | 2018-04-26 | Water turbine |
Publications (2)
Publication Number | Publication Date |
---|---|
GB201806862D0 GB201806862D0 (en) | 2018-06-13 |
GB2573153A true GB2573153A (en) | 2019-10-30 |
Family
ID=62495160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1806862.7A Withdrawn GB2573153A (en) | 2018-04-26 | 2018-04-26 | Water turbine |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2573153A (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3973864A (en) * | 1975-01-24 | 1976-08-10 | Atherton Dewitt T | Tide motor |
BE894490A (en) * | 1982-09-27 | 1983-03-28 | Worms Louis | Water wheel used to drive dynamo or alternator - has paddles hinged to swing into horizontal position during movement against flow |
US5051059A (en) * | 1989-10-13 | 1991-09-24 | Rademacher T Peter | Fluid powered electric generator having hinged vane rotor |
DE10061450A1 (en) * | 2000-12-09 | 2002-07-25 | Kai-Ude Janssen | Tidal or water flow kinetic energy station uses pressure faces on swivel axes rocking onto endstops in radial planes between swivel and rotor axes to form underwater power generator |
WO2004107527A2 (en) * | 2003-05-27 | 2004-12-09 | Ligman Eugene G | Low head, dynamic variable pitch, submersible hydro generator |
EP2128436A2 (en) * | 2008-05-20 | 2009-12-02 | Ventura Ribeiro de Matos, Antonio | Turbine with articulated and retractable blades for harnessing energy from a moving fluid |
US8120196B1 (en) * | 2005-09-20 | 2012-02-21 | Neese Stephen L | Wave-powered water wheel type generator |
GB2489308A (en) * | 2011-03-24 | 2012-09-26 | Japan System Planning Co Ltd | Swinging flap turbine with fluid guide |
US20150292474A1 (en) * | 2012-11-07 | 2015-10-15 | Atlantisstrom GmbH & Co. KG | Device for utilisation of kinetic energy of a flowing medium |
-
2018
- 2018-04-26 GB GB1806862.7A patent/GB2573153A/en not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3973864A (en) * | 1975-01-24 | 1976-08-10 | Atherton Dewitt T | Tide motor |
BE894490A (en) * | 1982-09-27 | 1983-03-28 | Worms Louis | Water wheel used to drive dynamo or alternator - has paddles hinged to swing into horizontal position during movement against flow |
US5051059A (en) * | 1989-10-13 | 1991-09-24 | Rademacher T Peter | Fluid powered electric generator having hinged vane rotor |
DE10061450A1 (en) * | 2000-12-09 | 2002-07-25 | Kai-Ude Janssen | Tidal or water flow kinetic energy station uses pressure faces on swivel axes rocking onto endstops in radial planes between swivel and rotor axes to form underwater power generator |
WO2004107527A2 (en) * | 2003-05-27 | 2004-12-09 | Ligman Eugene G | Low head, dynamic variable pitch, submersible hydro generator |
US8120196B1 (en) * | 2005-09-20 | 2012-02-21 | Neese Stephen L | Wave-powered water wheel type generator |
EP2128436A2 (en) * | 2008-05-20 | 2009-12-02 | Ventura Ribeiro de Matos, Antonio | Turbine with articulated and retractable blades for harnessing energy from a moving fluid |
GB2489308A (en) * | 2011-03-24 | 2012-09-26 | Japan System Planning Co Ltd | Swinging flap turbine with fluid guide |
US20150292474A1 (en) * | 2012-11-07 | 2015-10-15 | Atlantisstrom GmbH & Co. KG | Device for utilisation of kinetic energy of a flowing medium |
Also Published As
Publication number | Publication date |
---|---|
GB201806862D0 (en) | 2018-06-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |