GB2425154A - Wave powered turbine - Google Patents
Wave powered turbine Download PDFInfo
- Publication number
- GB2425154A GB2425154A GB0607347A GB0607347A GB2425154A GB 2425154 A GB2425154 A GB 2425154A GB 0607347 A GB0607347 A GB 0607347A GB 0607347 A GB0607347 A GB 0607347A GB 2425154 A GB2425154 A GB 2425154A
- Authority
- GB
- United Kingdom
- Prior art keywords
- turbine
- anchor
- blade
- turbine blade
- arm
- 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- Withdrawn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
- 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"
- F03B13/18—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
-
- 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"
- F03B13/18—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
- F03B13/1805—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem
- F03B13/1825—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for 360° rotation
- F03B13/183—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for 360° rotation of a turbine-like wom
-
- 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
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0091—Offshore structures for wind 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
- F05B2240/90—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
Abstract
A turbine for generating energy from water waves. The turbine comprises an anchor 3 fixing the position of the turbine, a support 13 that is coupled to the anchor 3 and to a turbine blade 27, the turbine blade 27 being rotatably mounted about an axis of rotation 17 on the support 13 and an electrical generator 15 coupled to the blade 27. The turbine blade 27 can be cylindrical in shape and designed to operate under the surface of the water by moving with the motion of the waves to generate electricity. A coupling 23 between the support 13 and the anchor 3 may allow the support 13 to be adjusted so as to vary the depth of the turbine blade 27.
Description
1 Thrbine 3 The present invention relates to a turbine and in 4 particular
a turbine for generating energy from water waves.
7 It is well known that the energy contained in sea and 8 ocean waves could be converted into electricity and could 9 provide a significant and environmentally friendly energy source. For example, it is estimated that the 11 technically achievable wave energy resource for the UK 12 from offshore waves is around 5OTWh or approximately 15% 13 of the total UK electricity generation.
Currently, the wave energy devices on the market do not 16 provide a practical means for extracting wave energy.
17 Several prototype machines are undergoing initial trials 18 but to-date none of these perform particularly well.
In addition, a device called a Bristol Cylinder is known.
21 The Bristol Cylinder is in effect, a turbine blade shaped 22 to give the optimum turbine or reactor profile for 23 extracting energy from waves.
1 Theoretically, the Bristol Cylinder is an extremely 2 efficient way of mechanically capturing the energy of 3 ideal waves when it has been tuned to the frequency and 4 amplitude of these waves. Even in real sea conditions the energy capture efficiency is reasonable. However, a 6 complex hydraulic arrangement is proposed to convert the 7 rotational mechanical energy into electrical energy in a 8 Bristol Cylinder.
It is an object of the invention to provide an improved 11 turbine suitable for generating electricity from water 12 waves such as sea or ocean waves.
14 In accordance with an aspect of the invention there is provided a turbine for generating energy from waves, the 16 turbine comprising: 17 an anchor fixing the position of the turbine; 18 a support means that is coupled to the anchor and to a 19 turbine blade, the turbine blade being rotatably mounted about an axis of rotation on the support member; and 21 an electrical generator coupled to the blade.
23 Preferably, the electrical generator is a direct drive 24 generator.
26 Preferably, the anchor fixes the position of the turbine 27 by being attached to the sea bed.
29 Preferably, the anchor extends from the sea bed to above the water surface.
32 Preferably, the anchor comprises an elongate structure or 33 one or more piles.
2 Preferably, the anchor comprises a pair of piles which 3 are supportively coupled to the turbine blade at, one at 4 each end thereof.
6 Preferably, the support means is attached to each anchor 7 and to the turbine blade via an armature.
9 The anchor has tripod shaped fixing means for attaching the anchor to the sea bed.
12 Preferably, the beam or pile has a platform at or near 13 the top of the beam or pile.
Preferably, the support means extends away form the 16 anchor.
18 Preferably, the support means is pivotably coupled to the 19 anchor to allow the depth of the turbine to be changed.
21 Preferably, the turbine is rotatable to allow the turbine 22 blade to face into a wave front.
24 Preferably, the turbine comprised a plurality of turbine blades rotatably mounted on the support means.
27 Preferably, the turbine blade is a cylinder.
29 Preferably, the buoyancy of the turbine blade is controllable.
32 Preferably, the turbine blade contains at least one 33 cavity, to which ballast can be removeably added.
2 Preferably, pumping means are provided to control the 3 amount of ballast in the cavity.
Preferably, the buoyancy of the turbine blade is 6 controlled by attaching buoyancy aids to the turbine.
8 Preferably, the turbine blade is coupled to the axis of 9 rotation by one or more arms.
11 Preferably, the one or more arm is extendable.
13 Preferably, the one or more arm is extendable by means of 14 a hinged arm.
16 Preferably, the one or more arm is telescopic.
18 Preferably, extension of the one or more arms is 19 controlled by resilient means which allow arm extension upon application of a predetermined force to the blade.
22 Preferably, the arm is extended using a motor.
24 Preferably, the position of the turbine blade with respect to the sea surface is controlled by reducing the 26 length of the arm 28 Preferably, the position of the turbine blade with 29 respect to the sea surface is controlled by extending and retracting the anchor to raise or lower the turbine 31 blade.
1 Preferably, the position of the turbine blade with 2 respect to the sea surface is controlled by raising or 3 lowering a moveable sleeve attached to the anchor.
The present invention will now be described by way of 6 example only, with reference to the accompanying drawings 7 in which: 9 Fig.1 is a perspective view of an example of a turbine in accordance with the present invention; 12 Fig.2 is a side view of the turbine of Fig.1; 14 Fig.3 illustrates the movement of a particle under the action of a wave; 17 Fig.4 illustrates the movement of a turbine blade in a 18 turbine of the present invention; Fig.5 is a perspective view of an example of a 21 cylindrical turbine blade containing a ballast tank; and 23 Figure 6 is a perspective view of a second embodiment of 24 the present invention.
26 Figs 1 and 2 show an embodiment of the present invention 27 in which the turbine 1 is attached to the sea bed 9 by 28 means of an anchor 3 which consists of a pile 5 with a 29 platform 7 on top of the pile 5. A coupling 23 connects the anchor 3 to a support beam 13. In this example the 31 coupling 23 allows the support member 13 to pivot 32 relative to the pile 5 to change the depth of the turbine 33 blade 27. In addition, the coupling is rotatably mounted 1 about the anchor 3 to allow the position of the turbine 2 blade 27 to be changed so that the turbine blade 27 can 3 face the wavefront of a wave.
A direct drive generator 15 is mounted on the axis of 6 rotation 17 of the blade 27 such that movement of the 7 turbine blade 27 causes generation of electricity. The 8 turbine blade is mounted on an extendable arm 19.
Figure 5 shows an example of a type of cylinder 127 which 11 has a ballast tank 29 which is used to control the depth 12 of the turbine blade below the sea surface. The ballast 13 tank has an inlet 31 an outlet 33 pumping means 35 and 14 communications means that allow the level of ballast and therefore the buoyancy of the turbine blade 127 to be 16 controlled.
18 In order to understand the operation of this device the 19 basic dynamic of sea waves will be explained. Whilst sea waves appear to role' in towards the shore with water 21 height initially rising then falling, in reality (in the 22 absence of tidal streams) individual water particles do 23 not move very far and in fact (for ideal' waves) they 24 move around an elliptical path completing a revolution every time a wave passes through. Ideal sea waves in 26 deep seas (water deeper than around 30m) cause water 27 particles to move in an approximately circular orbit as 28 the wave passes over the particle as shown in Fig.3.
The turbine blade 27 is a submerged cylinder aligned with 31 the wave crest and will follow a similar orbit to the 32 particle at the surface illustrated in Fig.3, but at a 33 small depth beneath the surface as shown in Fig. 4.
1 The cylinder 27 is submerged in order to minimise 2 problems associated with waves breaking on the device 3 that would affect a turbine on the surface.
The cylinder 27 orbits an axis parallel to its own. The 6 offset from its own axis is related to the wave height 7 (and not its own diameter) and is determined by the 8 length of the arm 19, which can be variable. In this 9 example, the cylinder does not rotate about its own axis i.e. the top of the cylinder will always be at the top 11 regardless of where it is in its eccentric orbit.
13 In addition, the radius scribed (and hence energy 14 available) reduces with depth such that approximately 95% of the energy is contained in the top /4 wavelength of sea 16 depth.
18 The present invention is effectively a reaction turbine 19 that is forced around by the motion of the water particles around it. The turbine blade uses a 21 combination of mass and buoyancy to capture the heave 22 (vertical motion) and its large surface area incident 23 with the wave front running to capture the surge 24 (horizontal motion) of the wave. Other turbine blade geometries can give a similar effect.
27 In this example, the turbine blade 27 is a massive 28 cylinder that is approximately 8m in radius and 50m long.
29 The cylinder will be neutrally buoyant so that it can remain at a stable depth a short distance under the sea 31 surface. The cylinder can increase or decrease its 32 buoyancy to rise to the surface for maintenance or sink 33 to the bottom to avoid the severest storms. The cylinder 1 27 is connected to the direct drive generator 15 via 2 variable length arms 19 which connect to the cylinder by 3 short shafts at the cylinder axis and to the rotor of a 4 direct drive generator at the axis of rotation 17.
6 The armatures 19 can tune the device to different wave 7 amplitudes. The action of the wave on the turbine blade 8 is the primary source of energy for varying the armature 9 length. This is achieved by controlling the degree to which the device tends to lag the wave motion. There are 11 a number of ways in which the armature length could be 12 varied including the use of a telescopic arm or a hinged 13 arm arrangement. The hinged arm can bend freely in the 14 centre; the effective length of the arm is controllable by controlling the angle of the bend which in turn is 16 controlled by controlling the relative angle of the 17 section of the armature coupled to the cylinder.
18 Typically, this would be achieved by using vector 19 control' techniques in the generator. Another, possibly hydraulic, control mechanism could be used to fine tune 21 the device and for storm avoidance and maintenance 22 routines. The armature and the rest of the dynamic part 23 of the structure can be fabricated from steel.
The generator's 15 axis is, in this example, the axis of 26 rotation of the turbine blade 27. Alternatively, the 27 direct drive generators could be located within the 28 cylinder 27 taking power off from the cylinder end of the 29 armatures 19. In this case the cylinder would require sufficient ballast to keep it upright' (or at least 31 prevent it from being overturned) even while reacting 32 against full-load torque.
1 The turbine of the present invention is aligned parallel 2 to the wave fronts and perpendicular to the principal 3 wave direction. The above embodiment would capture an 4 average power of -1.3MW from a sea with average power of 40kW/m (65% capture efficiency) . A device located in 6 seas with an average power of 40kW/rn with a 50m active 7 length could be expected to capture, at least, an average 8 power of approximately 1,300kw. To achieve this, the 9 device would need a maximum output of at least 3.8MW and would need to keep generating in all but the most 11 treacherous seas when it would be submerged well out of 12 the way of the most energetic part of the waves.
14 The generator 15 will be required to capture energy at a frequency of between 0.06-0.3Hz (3.6-18 rpm) . 3.8MW of 16 mechanical power at 3.6rpm (0.06Hz) equates to a torque 17 of >1ONNm.
19 In this example, the direct drive generator is a brushless dc generator with rare-earth permanent magnets 21 in a modular direct drive configuration. Alternatively, 22 the Torus' form of axial flux machine is suitable for 23 use in these challenging environments.
Figure 6 shows a second embodiment of the present 26 invention.
28 In this embodiment, the turbine 101 is provided with a 29 pair of anchors 103 which are embedded in the sea bed and which are formed from piles 105 which in use extend from 31 the sea bed up towards the surface of the water. The 32 turbine played 127 is supported by both of the piles and 33 is connected to each pile by means of armatures 119 which 1 are connected to generator 115 through coupling support 2 member 113. The armatures 119 are locatably mounted such 3 that the turbine blade 127 can rotate about an axis of 4 rotation as defined by the point at which the armature 119 is coupled to the piles 105 that support member 113.
7 As with the previous embodiment of the invention, the 8 movement of the ocean causes the turbine blade 127 to 9 rotate in harmonic motion about the axis of rotation, thereby generating electricity via the generator 115. In 11 use, it is envisaged that a number of such generators may 12 be arranged in a line and coupled together in order to 13 exact wave energy from the sea.
Advantageously, the turbine of the present invention may 16 be electrically very similar to a wind turbine. This 17 allows standard electrical components and methodologies 18 being developed for offshore wind farms to be applied to 19 offshore wavefarms.
21 In one example of the present invention, the device can 22 be anchored to the seabed using a tripod structure. As 23 the device is intended to be neutrally buoyant the forces 24 on the foundation during normal operation will be modest being primarily due to reacting against the torque 26 generated by the Direct Drive generator. The greatest 27 forces are likely to occur either when the device is 28 being sunk for storm conditions or when it is being 29 raised out of the sea for maintenance. The foundation of the device may extend up out of the sea and would have 31 a small enclosure to protect the electrical transformer 32 and switchgear and which would also provide protection 33 for any maintenance teams working on the device.
1 During storm conditions the device may be sunk down to 2 near the seabed well away from the most energetic part of 3 the sea. The device can remain operable at moderate 4 depth taking advantage of the fact that the rotation characteristic of sea wave is present with reduced 6 amplitude at depths of several meters.
8 The device may deal with freak waves by effectively de- 9 tuning' the turbine blades from the wave frequency and to allow the wave to wash over the device without 11 transferring a significant amount of energy to the 12 device. Alternatively, the turbine blade may be rapidly 13 sunk to avoid adverse conditions.
The present invention has a number of novel features, 16 notably: 17 the use of a direct drive generator to convert the 18 rotational kinetic energy of waves into electrical 19 energy; a very simple robust turbine design; 21 a simple robust structure for fixing the machine to the 22 seabed; 23 the ability to dive under extreme sea conditions; 24 the ability to yaw (rotate) to keep facing the prevailing wave direction; and 26 an extremely novel control system that will use the 27 energy of the waves to tune the turbine to individual 28 waves, thereby increasing energy capture.
Improvements and modifications may be incorporated herein 31 without deviating from the scope of the invention.
Claims (1)
1 Claims 3 1. A turbine f or generating energy from waves, the 4 turbine
comprising: an anchor fixing the position of the turbine; 6 a support means that is coupled to the anchor and to a 7 turbine blade, the turbine blade being rotatably mounted 8 about an axis of rotation on the support member; and 9 an electrical generator coupled to the blade.
11 2. A turbine as claimed in claim 1 wherein, the 12 electrical generator is a direct drive generator.
14 3. A turbine as claimed in claim 1 or claim 2 wherein, the anchor fixes the position of the turbine by being 16 attached to the sea bed.
18 4. A turbine as claimed in any preceding claim wherein, 19 the anchor extends from the sea bed to above the water surface.
22 5. A turbine as claimed in any preceding claim wherein, 23 the anchor comprises an elongate structure or one or more 24 piles.
26 6. A turbine as claimed in any one of claims 1 to 4 27 wherein, the anchor comprises a pair of piles which are 28 supportively coupled to the turbine blade at, one at each 29 end thereof.
31 7. A turbine as claimed in claim 6 wherein, the support 32 means is attached to each anchor and to the turbine blade 33 via an armature.
2 8. A turbine as claimed in any preceding claim wherein 3 the anchor has tripod shaped fixing means for attaching 4 the anchor to the sea bed.
6 9. A turbine as claimed in claim 5 or claim 6 wherein, 7 the beam or pile has a platform at or near the top of the 8 beam or pile.
10. A turbine as claimed in any of claims 1 to 5, 8 or 9 11 wherein the support means extends away form the anchor.
13 11. A turbine as claimed in claim 10 wherein, the 14 support means is pivotably coupled to the anchor to allow the depth of the turbine to be changed.
17 12. A turbine as claimed in any preceding claim wherein, 18 the turbine is rotatable to allow the turbine blade to 19 face into a wave front.
21 13. A turbine as claimed in any preceding claim wherein, 22 the turbine comprised a plurality of turbine blades 23 rotatably mounted on the support means.
14. A turbine as claimed in any preceding claim wherein, 26 the turbine blade is a cylinder.
28 15. A turbine as claimed in any preceding claim wherein, 29 turbine blade buoyancy is controllable.
31 16. A turbine as claimed in claim 15 wherein, the 32 turbine blade contains at least one cavity, to which 33 ballast can be removeably added.
2 17. A turbine as claimed in claim 15 or claim 16 3 wherein, pumping means are provided to control the amount 4 of ballast in the cavity.
6 18. A turbine as claimed in claims 15 to 17 wherein, the 7 buoyancy of the turbine blade is controlled by attaching 8 buoyancy aids to the turbine.
19. A turbine as claimed in any preceding claim wherein, 11 the turbine blade is coupled to the axis of rotation by 12 one or more arms.
14 20. A turbine as claimed in claim 19 wherein, the one or more arm is extendable.
17 21. A turbine as claimed in claim 19 or claim 20 18 wherein, the one or more arm is extendable by means of a 19 hinged arm.
21 22. A turbine as claimed in claim 21 wherein, the one or 22 more arm is telescopic.
24 23. A turbine as claimed in claim s 20 to 22 wherein, extension of the one or more arms is controlled by 26 resilient means which allow arm extension upon 27 application of a predetermined force to the blade.
29 24. A turbine as claimed in claim 23 wherein, the arm is extended using a motor.
1 25. A turbine as claimed in any preceding claim wherein, 2 the position of the turbine blade with respect to the sea 3 surface is controlled by reducing the length of the arm 26. A turbine as claimed in claim 25 wherein, the 6 position of the turbine blade with respect to the sea 7 surface is controlled by extending and retracting the 8 anchor to raise or lower the turbine blade.
27. A turbine as claimed in 25 wherein, the position of 11 the turbine blade with respect to the sea surface is 12 controlled by raising or lowering a moveable sleeve 13 attached to the anchor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0507366.3A GB0507366D0 (en) | 2005-04-12 | 2005-04-12 | Turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0607347D0 GB0607347D0 (en) | 2006-05-24 |
| GB2425154A true GB2425154A (en) | 2006-10-18 |
Family
ID=34610990
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0507366.3A Ceased GB0507366D0 (en) | 2005-04-12 | 2005-04-12 | Turbine |
| GB0607347A Withdrawn GB2425154A (en) | 2005-04-12 | 2006-04-12 | Wave powered turbine |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0507366.3A Ceased GB0507366D0 (en) | 2005-04-12 | 2005-04-12 | Turbine |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB0507366D0 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2900985A1 (en) * | 2006-05-12 | 2007-11-16 | Rudolf Kalman | Inflatable flexible sub-marine turbine for producing energy from e.g. waves, has balloon compartmentalized with two compartments that are inflated with air and pressurized water, respectively, and another compartment compressing water |
| WO2009142504A1 (en) * | 2008-05-22 | 2009-11-26 | Andresen Johan F | Wave energy generation system |
| EP2232051A2 (en) * | 2007-12-03 | 2010-09-29 | Daniel Farb | Stabilization of turbines in water |
| ITGE20110020A1 (en) * | 2011-02-25 | 2012-08-26 | Fresco Lorenzo Di | SEASPOON: DEVICE FOR THE ENERGETIC CONVERSION OF THE WAVE MOTO OF THE FREE HAIR OF LIQUIDS. |
| CN103114959A (en) * | 2012-11-15 | 2013-05-22 | 杜志刚 | Wave corrosion resistant coast dyke shaft direct connected electricity generating device |
| US8686582B2 (en) | 2006-11-21 | 2014-04-01 | Industrial Research Limited | Wave energy converter |
| CN103790767A (en) * | 2012-11-15 | 2014-05-14 | 杜志刚 | Anti-wave-erosion costal embankment power generator |
| EP2435691B1 (en) * | 2009-05-26 | 2015-01-07 | Robert Bosch GmbH | Power converting device for converting wave energy |
| JPWO2014076782A1 (en) * | 2012-11-14 | 2016-09-08 | 合同会社アルバトロス・テクノロジー | Single bucket drag type turbine and wave power generator |
| CN106286108A (en) * | 2015-05-11 | 2017-01-04 | 上海林蔷实业有限公司 | A kind of TRT of hydrostatic(al) water buoyancy |
| WO2017088011A1 (en) * | 2015-11-23 | 2017-06-01 | Helberg Holdings Pty Ltd | Hydroelectric installation |
| EP2597299A4 (en) * | 2010-07-21 | 2017-08-02 | Samsung Heavy Industries Co., Ltd. | Wave power generation apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2119449A (en) * | 1982-04-01 | 1983-11-16 | Edward Victor Byers | Abstracting energy from water subject to wave motion |
| JPS61169675A (en) * | 1985-01-24 | 1986-07-31 | Ishikawajima Harima Heavy Ind Co Ltd | Wave activated power generating device |
| GB2262572A (en) * | 1991-12-17 | 1993-06-23 | Retzler Chris Heinz | Sea or lake wave energy convertor. |
| WO2002044558A1 (en) * | 2000-12-01 | 2002-06-06 | Econcern Bv | Device for the utilisation of wave energy |
| WO2005054668A1 (en) * | 2003-11-28 | 2005-06-16 | Arlas Invest, S.L. | Energy generating system using sea waves |
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2005
- 2005-04-12 GB GBGB0507366.3A patent/GB0507366D0/en not_active Ceased
-
2006
- 2006-04-12 GB GB0607347A patent/GB2425154A/en not_active Withdrawn
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| GB2119449A (en) * | 1982-04-01 | 1983-11-16 | Edward Victor Byers | Abstracting energy from water subject to wave motion |
| JPS61169675A (en) * | 1985-01-24 | 1986-07-31 | Ishikawajima Harima Heavy Ind Co Ltd | Wave activated power generating device |
| GB2262572A (en) * | 1991-12-17 | 1993-06-23 | Retzler Chris Heinz | Sea or lake wave energy convertor. |
| WO2002044558A1 (en) * | 2000-12-01 | 2002-06-06 | Econcern Bv | Device for the utilisation of wave energy |
| WO2005054668A1 (en) * | 2003-11-28 | 2005-06-16 | Arlas Invest, S.L. | Energy generating system using sea waves |
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| FR2900985A1 (en) * | 2006-05-12 | 2007-11-16 | Rudolf Kalman | Inflatable flexible sub-marine turbine for producing energy from e.g. waves, has balloon compartmentalized with two compartments that are inflated with air and pressurized water, respectively, and another compartment compressing water |
| US8686582B2 (en) | 2006-11-21 | 2014-04-01 | Industrial Research Limited | Wave energy converter |
| EP2232051A2 (en) * | 2007-12-03 | 2010-09-29 | Daniel Farb | Stabilization of turbines in water |
| EP2232051A4 (en) * | 2007-12-03 | 2012-12-05 | Daniel Farb | Stabilization of turbines in water |
| WO2009142504A1 (en) * | 2008-05-22 | 2009-11-26 | Andresen Johan F | Wave energy generation system |
| EP2435691B1 (en) * | 2009-05-26 | 2015-01-07 | Robert Bosch GmbH | Power converting device for converting wave energy |
| EP2597299A4 (en) * | 2010-07-21 | 2017-08-02 | Samsung Heavy Industries Co., Ltd. | Wave power generation apparatus |
| ITGE20110020A1 (en) * | 2011-02-25 | 2012-08-26 | Fresco Lorenzo Di | SEASPOON: DEVICE FOR THE ENERGETIC CONVERSION OF THE WAVE MOTO OF THE FREE HAIR OF LIQUIDS. |
| JPWO2014076782A1 (en) * | 2012-11-14 | 2016-09-08 | 合同会社アルバトロス・テクノロジー | Single bucket drag type turbine and wave power generator |
| US9816480B2 (en) | 2012-11-14 | 2017-11-14 | Albatross Technology LLC | Single bucket drag-type turbine and wave power generator |
| CN103790767A (en) * | 2012-11-15 | 2014-05-14 | 杜志刚 | Anti-wave-erosion costal embankment power generator |
| CN103114959A (en) * | 2012-11-15 | 2013-05-22 | 杜志刚 | Wave corrosion resistant coast dyke shaft direct connected electricity generating device |
| CN106286108A (en) * | 2015-05-11 | 2017-01-04 | 上海林蔷实业有限公司 | A kind of TRT of hydrostatic(al) water buoyancy |
| WO2017088011A1 (en) * | 2015-11-23 | 2017-06-01 | Helberg Holdings Pty Ltd | Hydroelectric installation |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0507366D0 (en) | 2005-05-18 |
| GB0607347D0 (en) | 2006-05-24 |
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