CA2631708A1 - Hydroelectricity water-wheel turbine system - Google Patents

Hydroelectricity water-wheel turbine system Download PDF

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Publication number
CA2631708A1
CA2631708A1 CA002631708A CA2631708A CA2631708A1 CA 2631708 A1 CA2631708 A1 CA 2631708A1 CA 002631708 A CA002631708 A CA 002631708A CA 2631708 A CA2631708 A CA 2631708A CA 2631708 A1 CA2631708 A1 CA 2631708A1
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Prior art keywords
blades
water
axis
turbine system
turbine
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Abandoned
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CA002631708A
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French (fr)
Inventor
Robert Jean Druzin
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Individual
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Individual
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Priority to CA002631708A priority Critical patent/CA2631708A1/en
Publication of CA2631708A1 publication Critical patent/CA2631708A1/en
Abandoned legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00Other machines or engines
    • F03B17/06Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F03B17/062Other 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
    • F03B17/065Other 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807Rotary generators
    • H02K7/1823Rotary generators structurally associated with turbines or similar engines
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/30Energy from the sea, e.g. using wave energy or salinity gradient

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  • Engineering & Computer Science (AREA)
  • Power Engineering (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)
  • Hydraulic Turbines (AREA)

Abstract

The embodiment of the invention is a right horizontal circular reaction turbine system for the generation of hydroelectricity. It consist of a Darrieus type turbine with a vertical shaft and axis of rotation. The turbine unit is fully immerged in water-flow; except the shaft, the floor support, the bearings and the generator. All swinging blades are held equidistant to the central axis by horizontal blades support members or vertical bar blades support members between the two horizontal discs that makes the chassis. This 360 degrees all direction, self starting and high torque device, at apex position, the swinging blades with stoppers at the right of the axis, fully harness the kinetic power because on the left side of the axis, all swinging blades with no stoppers start to swing open from there original seat, illiminating at almost maximum (90%) the counter--force effect. This device can also illiminate gravitational weight, stress and fatigue by affixing air pocket cylinders to the turbine unit; wherein not to be compared to the other types of Darrieus classical generation water-wheel with less positive characteristics. The spin direction is interchangeable.

Description

IMPROVED DARRIEUS WATER-WHEEL TURBINE;
FIELD OF INVENTION; -This invention relates to reaction turbine for the generation of hydroelectricity.
Background of the invention;

Devices which take advantage of the energy of failing water, existed for several centuries. The earliest example is the water-wheel. It is an impulse device which uses a multitude of buckets or paddles to catch falling or moving water, depositing it at down streem point.
The movement of the buckets or the paddles spins a central supporting shaft which can do work or be used to generate power.
In the late 1800's and early 1900's hydro power innovaters discovered the adventages of reaction turbine which mainly generate power from pressure and differences in streem flow. The Francis, Kaplan, Pelton and cross-flow hydro power disigns are mature technologies and very well understood. None of these disign, however, is recommended for high flow applications of less then 3 meters of head.
One solution for economically genereting power from ultra-low head hydro sites (less then 3 m of head), is the adoptoin of the new improved Darrieus type design. While the Barry V. Davis turbine demonstrates the applicability of the Darrieus design in water, there are three drawbacks; the first, rotation about a vertical axis. To extract power from a wide river, many Davis turbines located side by side, around be requied. This increases the quantity of moving parts, gears and generators resulting in increased complexity and cost. The second problem is the counter-force effect when the two blades at apex position equal zero energy power. The two blades movement is perpendicular to the flow, This counter-force effect creates early fatigue of the blades and system, reducing extractable energy torque power from the turbine as energy must be expended to push trough the flow. The third drawback is the classic Darrieus types are not self starting, only a few designs. The device needs an axternal rotating force to start the water-wheel.

OBJECT OF INVENTION;

The object of this invention is to provide a simple, reliable, self-starting, low cost Darrieus type hydroelectric turbine system, which illiminates the counter-force effect and the gravitational weight, to reduce stress and wear to the system and optimizing the mechanical torque for better electric generating power which does not exist at this moment in the classical Darrieus,Barry V Davis, cipo 2547748 and similar water-wheel system.

SOMMARY OF THE INVENTION;

The present invention; which satisfies the foregoing object, is a hydroelectric reaction turbine system fully immerged in water-flow, consisting of a Darieus type turbine, with a vertical shaft and axis of rotation with swinging hinged blade support members. In ali the disigns, the generator's shaft, connected verticaly to the vertical axis, is outside the water level.
This 360 degrees self starting, high torque turbine device harness the maximum mechanical energy from the water-flow without allmost any counter-force effect with the moving swinging open blades,(a apex), perpendicular to the direction of the water flow.
At the design 5, the horizontal blades support discs are connected equidistant to the rotational vertical axis. The four or more blades support members are between the two horizontal discs and the vertical axis. Each blade are vertical with the vertical axis. There are six vertical bars that are welded at 60 degrees apart to the two 360 horizontal disk support members. All supporting bars are equidistant to the vertical axis.

' = SUMMARY OF THE INVENTION;

By having swinging hinged blades rotating freely on the left side of the axis, trough the water, when they are moving counter the direction of the water flow, with no stoppers, the blades avoid having to move directly against the flow, because they open up from there original seat.
The counter-force effect existing in all Darrieus type, is complitely illiminated, greatly reducing stress and fatigue on the system and increacing the energy output and faster speed with no resistance force against the turbine device. Such turbine disign is also a self strarting, as no counter-force caused by the flow needs to be overcome. Biside illiminating the counter-force effect and illiminating the gravitational weight by connecting the air pocket cylinder attached to the system; the invention becomes more accurate, simple and economic, then Davis and other types whit less characteristics. Fore exemple, to utilize in a wide or tidal environment, the only adjusment is a longer and bigger axis and a set of more blades surface. A single shaft, a power generator and gearing system(if necessary),are required, To further increase energy conversion efficiency, the water wheel can be size to fully traverse the width and depth of the water-flow channel. This arrangement forces all the water-flow trough the unit, permitting maximum mechanical torque on the axis and shaft.
Efficiencies approching that of traditional riaction turbines are theoreticaly and feasable possible.
Drawing figure 6 would be appropriate for the channel path way, alternating diagonally the turbines face to face between the two walls.

BRIEF DESCRIPTION OF THE DRAWING;

The invention can be better understood by referance to the accompanying drawings in which;
Figure 1: front view down the direction of the water-flow. This design has two hinged swinging blades with back and fort movement on the left side of the axis to avoid the water-flow pressure.
Figure 2: top view down the direction of the water-flow. This design is similar to figure one 1 with six support members holding swinging blades.

Figure 3: top plan view of the whole turbine unit, down the direction of the water-flow. It shows all support members, the shaft, axis and the circular disk. This design is diferent from figure one and two. It is a right horizontal circular cylinder with 6 blade support members with swinging blades horizontaly attached to the circular frame,(the disk), and axis. The 6 bars between the circular frames can also hold swining blades.

Figure 4: frontal view down the direction of the water-flow. This design demonstrate partly a four swinging blade,like doors, in action at apex position. Also a top plan view for better understanding.
This segment of the turbine's disign of drawing 5, is only the transversal diameter of the turbine at apex position with the swinging blades in action.

Figure 5: full turbine unity design is a three dimentional frontal view down the direction of the water-flow. This design is the same as figure 3 with a right horizontal circular cylinder at a top plan view.

Figure 6: front view down the direction of the water-flow on the right side of the page. It comprises two designs to explain the turning axis holding system with bearings attached to the main support members connected to the cement wall.

Figure 7: To the right of the page, there is a frontal view down the direction of water-flow. This disign with air packets demonstrate a full unit, with a generator above the water level. down to the bottom floor cement base. The two drawings at the left show that the whole system is in operation by going verticaly up and down the vertical shaft, fixed to upper bearings system and attached to cement base. The shaft and axis are not connected to each other. The shaft is flxed and the axis is mobile to move up and down longitudinally to the vertical shaft, fallowing the water level..

LIST OF THE WATER WHEEL MECHANICAL ELEMENTS:

1. SHAFT
2. AXIS
3. BLADES SUPPORTS MEMBERS
4. ALL STOPPERS
5. ALL SWINGINGS BLADES
6. HOLDERS
7. ALL HINGES
8. VERTICALS BLADES SUPPORTS BARS
9. WATER LEVEL
10. WATER-WHEEL SPIN DIRECTION
11. GENERATOR
12. CYLINDRICAL UNIT'S CHASSIS SUPPORTS
14. WALL UNIT SUPPORTS BRAKETS

15. HARD PLASTIC CYLNDRICAL BEARINGS
16. WALL AND CIMENT BASE

17. TOP CYLINDRICAL WATER LEVEL AIR POKET
18. SHAFT'S AIR POKET

19. FLOOR OR TABLE GENERATOR'S SUPPORT
20. SPEED GEARS BOX

21. ALL BEARINGS

DETAILED DESCRIPTION OF THE DRAWING;

Figure 1. is a 30 degrees projection view down the direction of the water-flow for one embodiment of the invention. The vertical shaft(1) is over the water level. The shaft(1) and the generator(11) are installed above the floor (1 3),fig. 4. The shaft(1) is connected to the vertical axis(2) to which all support members(3) are connected and immerged in water-flow(9). In this design the support members has a T form stopper(4) big enough for the first demonstration. THe support members (3), are perpendicular to the axis(2) and the shaft(1), and on the right side of the axis(2), the swinging blades(5) are attach to the hinges(7), is stop by the T forme stopper(4) at apex position.
On the other,(feft side) of the axis, the water-flow exert is water kinetic power on the swinging blade(5) backward fallowing the water-flow pressure with no counter-force effect and no resistance to the right side powered blades(5). This innovative turbine system, (call the UNIT), has two ways directional system, clockwise or the counterclockwise, by interchanging the stoppers(4) on the other side of the swinging blades(5), or the contrary. All 7 demonstrating figures are counterclockwise. See figure 2 for more details wiht 6 blades(5) figure. The side, where the blades (5) stops, determines the direction of the spin, which for the representation of this invention, the dwawings are all counterclockwise.

Figure 2, is a top plan view down the direction of the water-flow. Similarly to figure 5, on this design, the rotation(10) counterclockwise, start at zero degree up to 180 degrees, only on the right side of the unit, to harness water-flow energy. From 181 to 360 degrees the swinging blades(5) open up because there are no stoppers(5), and the water-flow goes right through the blades(5) on the left side of the vertical axis(2), not to compare with the Darrieus classical type with less characteristics.The disign shows clealy that there is no counter-force effect, less stress and fatigue on the turbine water-wheel system. This self starting device is a 360 degrees water-flow energy capter, ( in all direction ).

Figure 3. is a top plan view of figure five(5) of the water-wheel turbine down the direction of the water-flow(9) for the embodiment of the invention. This water-wheel has 6 horizontal blades support members(3) connected between the vertical axis(2) to the horizontal circular support members(12). The 6 blades support members are divided in 60 degrees apart from the axis(2) to the disk support members(12). This new design has swinging hinges vertical blades(5) between the two horizontal circular blades support membersd(12) with vertical holding support bars(8).
This figure 3 design shows the functioning of all swinging blades(5) at apex position down the direction of the water-flow perpendicularly, showing at the right side of the axis that the three swinging blades(5) are directly fxed on the frame support or axis, fig,5, adjacent to their respective stopper(4). At the same apex position the three swinging blades(5) on the left side are fully open from there own respective position to avoid the water-flow pressure that pushe the blades(5) backward to illiminate the counter-force effect; at the same time iAiminating stress and wear to the turbine system and to give more speed to the water-wheel with more torque power to the vertical axis(2) immerged in water and to the shaft above the water level, connected to a speed geared-box and to the generator.

Figure 4. This design is the center cross-section of figure 5, at apex position down the direction of the water-flow. All the swinging btades(5) on one 1 spin, (360.degrees), play two roles. The same blade (5) between 0 to 180 degrees is harnessing the water-flow kinetic power, and from 181 to 360 degrees, the blades(5) is avoiding the water-flow pressure by opening the swinging blades(5), on the left of the vertical axis(2), because there is no stopper to retain them, which illiminate the counter-force effect. The stoppers(4) are affixed to the axis(2) or on the swinging blades support members(3) or support bars members(8). In this desing there is rod hinges(7), but all hinge disigns are acceptable, the size and the material. All the swinging blades(5) are connected to all swinging blades support members, to the vertical axis(2), connected to the shaft (1) operating the bearing system(21), the speed gear-box and the appropriate generator(11).

DETAILED DESCRIPTION OF THE DRAWINGS, 5 TO 7.

FIGURE 5. This figure 5 is a complete unit. This horizontal water-wheel is a turbine with a vertical axis(2) immerged in water (9). This innovative design can produce mechanical and electric power.
The purpose of this energetic power system is to harness,at maximum, the kinetic water-flow power and to minimize the counter-force effect, to augment the speed, and to have more torque power on the axis(2) and shaft(1). As you can see, all the swinging blades(5) are in operation at apex position,perpendicular to the water-flow. Three swinging blades(5) on the right side of the axis(2) are harnnessing water-flow power; and on the other left side of the axis(2), three swinging blades (like doors design) open fully wih the same water-flow at apex position. To give more power to the system, we can add,.outside to the circled unit, more support members and larger blades. to benefit from the leverage power because it is far more distant from the axis(2). This design can operate at 360 degrees in any water-flow direction specialy in tidal environment. The whole unit is welded or assembled with light material. This operating system is very adaptable for the sea animals. There are no cavitation, no water turbulance and mosly, no polution... In all Darrieus water-wheel and other similar design (Barry V. Davis, cipo/ 2547748, do not have the characteristic that were demontrated above.

Figure 6. is a double turnines unit fixed on a cement wall(16) down the direction of the water flow of an emdodiment of the invention wherein the three turbine support bracket members (14) hold fixidely the axis without any rotation disterbance or resistance, because there is a minimal space between the rubber or hard plastic cylinder bearings(15) and the axis(2), (see top left drawing).
The bearings(15) can also be installed on the axis(2). These turbine unit supports(14) are installed on the vertical axis(2) between the turbines units, ( the water-wheel ). All the three turbine units support members(14) are perpendicular to the vertical axis. The same disign can be installed on metal posts, barges's wall, all water floating device, including house-boats. Biside the shaft(1) and the bearings on the platform(19) holding the generator(11), the whole tubine system is immerged in water, rotating horizontaly with all the above mentioned characteristics. The turbine units are innovative, feasable , ease to install. transportable. less money to produce then other systems, more kilowatts per hour against the Darrieus classic warer-wheel type and others Davis.... they do not have the same characteristics. advantages and more accuracy.

Figure 7. This 360 degrees energy capter disign is a frontal and top plan view down the direction of the water-flow of an embodiment of the invention, wherein the central shaft(IA) is all the way down from the generator connections to the bottom of the cement base(16) standing on a bearing system(21). The object of the innovative disign is to obtain the illimination of the gravitational weight by having air pockets attached to both, the shaft(1A) and the axis(2B).
The turbine units with the air poket cylinder(17) attached on the top to the turbine system elevates the weight from the groun and permits the turbine to follow the water level at all times by sliding verticaly up and down the shaft(1A). The gravitational free system gives more movement and ease to the operation, which illiminates stress and fatigue; and giving more torque power and more speed to the rotating turbine device. The air pocket(18) attached to the shaft(1A) at the cement base(16) is to illiminate the gravitational weight on the bearing system(21) connected to the ciment base(16) and the bearing(21) standing on the platform(19), wherein, not to compare to any of the Darrieus type and others. We can also use the chassis by giving more air pocket volum inside the tubes by augmenting the diameter of all the pipes that holds the chassis, (unit), and also augmenting the diameter of the axis(2 and 2A) depending on the disire turbine mode.

Claims (12)

1. A reaction turbine system for harnessing energy from liquid flow comprising a shaft, an axis, more then two blades support members mounted horizontaly to the vertical axis, more than two blades support bar members installed verticaly between the horizontal circular frame and chassis, (the discs), connected to the horizontal support member, see figure 5. All the blades are swinging verticaly or horizontaly , depending where the hinges are installed, whether on the blade bar support member or on the horizontal blade support members. No type of Darrieus or other,Berry V, Davis, cipo patent.2547748 has thes swinging blades and the vertical bars with the swinging blades to harness the water-flow energy and illiminate the counter-force effect at the same time.
This self starting innovative design, under water level turbine device, except the shaft and the generator, captures the water-flow energy in all direction, 360 degrees. This tubine device is adaptable to turbulant, agitated and tidal water-flow. On the blades support members and axis, there are welded stoppers that control the spin direction;, counterclockwise as seen in one to five drawing demonstrations; and clockwise by changing the blades on the other side of the stoppers.
The gravitational weight is illiminated with air pocket cylinder and all the members's air pocket connected tubes to the axis. We can augment the size of the diameter to have more air pocket volume. All these positives characteristics gives the turbine system more torque power, more rotary speed. less stress and fatigue; and more autonomy, accuracy and longivity to the reaction turbine system.
2. The turbine system of claim(1). wherein all the blades are swinging verticaly or horizontaly depending where the hinges are mounted on the horizontal blades support members or vertical bar blades support members on the unit. On each side of the vertical axis, all the swinging blades are equidistant and vertical with the axis.
3. The reaction turbine system of claim one and two, wherein on the same 360 degrees, (one full turn), all the blades play two roles, the first, to harness wate-flow energy on the right side of the axis from 0 degrees to 180 degrees, and at the same apex position, from 181 to 360 degrees, the second role is illiminating, on the left side of the axis, the counter-force effect, which illiminates resistance to the powered blades, and give more speed to the water-wheel device.
4.The reaction turbine system of claim 1 to 3, wherein all the swinging blades are affixed with hinges and mounted to there respected vertical bar or horizontal blade support members.
5. The reaction turbine system of any one of claim 1 to 4, wherein this innovative design assure a self starting operation system, under water level at low speed or fast speed at apex position perpendicular to the water-flow.
6.The reaction turbine system of any one of claim 1 to 5, wherein the horizontal turbine disign, figure 5, the energy capter, harness water flow energy from all directions at 360 degrees, because the tubine device is horizontal and circular with a vertical axis. The shaft is affixed outside the water lever to the platform with bearing and a adapted generator.
7. The reaction turbine system of any one of claim 1 to 6. wherein on the blades support members and axis, there are welded stoppers that control the spin direction. On all 1 to5 figures shows the counterclockwise spin direction. We obtain the clockwise direction by changing all the swinging blades on the other side of the stopper or changing the mobile stoppers (option), on the other side of the swinging blades, according to the installment
8. The reaction turbine system of any one of claim 1 to 7. wherein this innovative design, the supperpose double turbine system is mounted with horizontal wall brackets unit support members on the cement wall and reinforced concrete base. This water-wheel turbine device can greatly be used in channal path ways and be install diagonaly to the facing walls. The adaptation of this device is almost unlimited to the water- flow. It can be adapted to kilowatt hour demand, with moderation.
9. This reaction turbine system of any one of claim 8, wherein the walt bracket's arm with a five or more cylindrical bearings at the end of the arm, holes the axis of the turbine unit system. There is a small distance between the axis and the inside of the cylindrical bearing ring. The purpose of this distance is to liberate the axis's rotary movement, so the whole turbine system is stabilised verticaly. This wall bracket, with the five and more cylindrical bearing can be installed on metal posts, on water raft, barges, house-boat and more, anchored to water bottom floor. This wall bracket arm can sustain the shaft and axis of the turbine system.
10. The reaction turbine system of claim 8 and 9 wherein the gravitational weight is illiminated with the air pochet cylinders and all the members's air pokets connected tubes to the axis, we can augment the size's diameter to the tube to have more air pocket volume instead of the air pocket cylinder affixed on top or bottom of the turbine unit or have both air pocket system,to obtain zero point of gravitational weight. This innovative structure and disign give more flexibility for the whole turbine system and it fallow the water level at all time, by going longitudinaly up and down the long vertical shaft down to the cement base, The up and down turbine floating system is the future tool for the tidal environment; not like the Darrieus type water-wheel and other disings that has less funtional characteritics, At the bottom of the long vertical shaft, there is a cement base that receices the shaft on the bearing system's seat and hols it for stability and manoeuvrability The three characteristics, air pockets, the turbine units going up and down on the vertical shaft and the bearing system, give more torque power, more rotary speed, less stress and fatigue, more autonomy and longivity to the reaction turbine system.
Claim 11: A reaction turbine system for hamessing energy from liquid flow wherein the idea is to capture at maximum all the water-flow energy. Beside having all the characteristics from claim 1 to 10, to improve the turbine device, we can prolong or extend the blades support members with the swinging blades outside the circular rotating device, the chassis and frame, and use the leverage power to hamess more torque energy: which does not exist in Darrieu, Barry V.
Davis, cipo 2547748 and other water-wheel type, that do not accomplish the same energy output.
12. The reaction turbine system of any one of claim 1 to 11, wherein the shaft is connected to a gearing system connected to a power generator above the water level.
CA002631708A 2008-05-22 2008-05-22 Hydroelectricity water-wheel turbine system Abandoned CA2631708A1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010063131A3 (en) * 2008-12-01 2011-03-24 Isik Hasan Hueseyin Turbine
CN106870272A (en) * 2017-03-28 2017-06-20 天津市永亮水电设备制造有限公司 A kind of tail water generating set rotaring wheel structure
CN110792548A (en) * 2019-06-01 2020-02-14 唐华山 New-generation reaction type water turbine
CN113279900A (en) * 2021-05-25 2021-08-20 于传祖 Tidal current energy power generation device
GB2620565A (en) * 2022-07-07 2024-01-17 Tidal Tech Limited Tidal turbine
GB2621060A (en) * 2022-07-07 2024-01-31 Tidal Tech Limited Tidal turbine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010063131A3 (en) * 2008-12-01 2011-03-24 Isik Hasan Hueseyin Turbine
AU2009322052B2 (en) * 2008-12-01 2012-04-05 Hasan Huseyin Isik Turbine
US8943824B2 (en) 2008-12-01 2015-02-03 Hasan Hüseyin Isik Water turbine having blades containing inflatable elements
CN106870272A (en) * 2017-03-28 2017-06-20 天津市永亮水电设备制造有限公司 A kind of tail water generating set rotaring wheel structure
CN110792548A (en) * 2019-06-01 2020-02-14 唐华山 New-generation reaction type water turbine
CN113279900A (en) * 2021-05-25 2021-08-20 于传祖 Tidal current energy power generation device
GB2620565A (en) * 2022-07-07 2024-01-17 Tidal Tech Limited Tidal turbine
GB2621060A (en) * 2022-07-07 2024-01-31 Tidal Tech Limited Tidal turbine

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