WO2010050879A1 - Power plant - Google Patents

Power plant Download PDF

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Publication number
WO2010050879A1
WO2010050879A1 PCT/SE2009/051174 SE2009051174W WO2010050879A1 WO 2010050879 A1 WO2010050879 A1 WO 2010050879A1 SE 2009051174 W SE2009051174 W SE 2009051174W WO 2010050879 A1 WO2010050879 A1 WO 2010050879A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate members
shaft
stream
energy
rotation
Prior art date
Application number
PCT/SE2009/051174
Other languages
French (fr)
Inventor
Lennart Nilsson
Original Assignee
Lennart Nilsson
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lennart Nilsson filed Critical Lennart Nilsson
Publication of WO2010050879A1 publication Critical patent/WO2010050879A1/en

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
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/062—Rotors characterised by their construction elements
    • F03D3/063—Telescoping or folding wind engaging parts
    • 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
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/062—Rotors characterised by their construction elements
    • F03D3/066—Rotors characterised by their construction elements the wind engaging parts being movable relative to the rotor
    • F03D3/067—Cyclic movements
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Definitions

  • the present invention relates to a power plant and in particular a power plant capable of utilizing in air and water such as wind, flowing water or wave movement.
  • Another example of new technology is a plate that is pivotally arranged to a base placed on the sea bottom where wave movements make the plate pivot back and forth. This movement is transmitted via hydraulic cylinders to a hydraulic motor/electric energy generator unit for producing energy.
  • the drawback with this type of technology is that each unit produces very little energy because the movement is both limited and relatively slow.
  • the aim of the present invention is to provide a development of power plants for renewable energy sources.
  • a device for generating energy comprising a mainly vertical shaft, connection members between the shaft and an electricity generator, support structures attached to the shaft, plate members arranged to said support structures and capable of capturing a water or wind stream in order to obtain a rotation of said shaft, characterised in that said plate member is turnably arranged such that it is positioned mainly parallel to the direction of rotation when it rotates against the stream.
  • the plate members are at least two and whereby at least on of the plate members are arranged turnable.
  • the plate members are arranged to be turned by the stream.
  • the plate members comprise guide means for guiding the stream against the plate means.
  • the plate member may be concave.
  • the plate members Due to that the plate members are turnable between a position where they are placed perpendicular to the energy stream, to a position mainly parallel with the rotational direction when they move against the energy stream, the plate members create a momentum around the shaft when they follow the energy stream and minimize the resistance when they are moving against he energy stream. In this way a large turning momentum is created that is used to drive an electric generator. Due to its design the device can be used for different energy streams such as wind power, water power, wave power and tidal wave power. Due to its design with vertical drive shaft no high and disturbing constructions are required as are required with conventional wind power plants with large propellers.
  • the reduced height is also an advantage if the device is placed on the sea bottom for utilizing wave or tidal wave power.
  • the design of the device further does not require any auxiliary constructions as is the case with conventional water power plants but may be placed directly in the flow of a river.
  • the plate members may either be arranged to turn automatically by the energy stream, i.e they are suspended such that when the plate members are rotated against the energy stream, this turns the plate members so that they are generally parallel with the energy stream, which reduces the resistance. It is however feasible that the plate members are arranged with some type of control means such as hydraulic cylinders, friction breaks and the like for controlling the movement of the plate members. A more controlled movement means reduced risk of wear on the construction as well as minimizing noise, vibrations and unbalanced loads on the construction.
  • the plate members are arranged and designed such that they optimize the energy obtaining ability, whereby they may be somewhat concave and arranged with guide plates on the upper and under side for preventing the energy stream from sneaking past the edges of the plate members.
  • FIG. 1 In the figure is shown schematically the principle of the present invention. It comprises a central shaft 10, mainly vertically directed. To the shaft a generator 12 for producing electricity is connected, which either could be directly or via a suitable transmission.
  • first support structure 14 which in the embodiment shown comprises four arms 16, which form a cross with the shaft in the centre.
  • second support structure 18 is then arranged, also comprising four arms 20.
  • power collecting means 22 are arranged, thus four in the embodiment shown where two are shown only with broken lines for clarity.
  • These power collecting means comprise plate-like members 24, preferably two per power collecting means.
  • one plate member in a pair can be fixedly attached to the arms while the other is tumably arranged to the arms in a manner that will be described below.
  • the turnable plate member is turnable from one position where one of its side edges mainly abuts the side edge of the other plate member, the right pair in the figure, to a position where it is arranged mainly in the direction of rotation, the left pair in the figure.
  • the device is intended to function as follows.
  • An energy stream 26, water or air, is acting on the plate members of the power collecting means when these are folded out according to the right pair, which energy stream creates a turning momentum on the shaft 10, whereby the device rotates.
  • the turnable plate member is arranged such that when that pair rotates against the energy stream, the turnable member will be turned such that it is arranged mainly parallel with the direction of rotation, which reduces the resistance.
  • the other plate member in the pair may be designed turnable between the above mentioned positions in order to further reduce the resistance when the pair is rotating against he energy stream.
  • one or both of the plate members either can be turned spontaneously by the energy stream between a position where they are in contact with each other and catch the energy stream to a position where one or both of the plate members are abutting a stop, or that this turning movement is guided or controlled by suitable guide means such as hydraulic cylinders 30, friction brakes or the like.
  • suitable guide means such as hydraulic cylinders 30, friction brakes or the like.
  • the plate members may be designed with guide plates 32 arranged to the upper and lower edges for preventing the energy stream from finding its way over and under these edges respectively. Further it is feasible that the plates have a somewhat curved or concave form in order to guide the energy flow.
  • the shown embodiment is arranged with four power collecting means, but of course it may be designed with another number depending on area of use and/or type of medium that creates an energy stream.
  • the generator 12 can be placed above the rotor, for example if the power plant is placed below the water surface 30 in a flowing river.
  • the device may then be arranged with a sturdy post 32 with anchoring means 34 for attachment on the bottom.

Abstract

The present invention relates to a device for generating energy comprising a mainly vertical shaft (10); connection members between the shaft and an electricity generator; support structures (14, 16) attached to the shaft; plate members (24) arranged to said support structures and capable of catching a water or wind stream (26) in order to obtain a rotation of said shaft. The invention is characterised in that said plate members (24) are turnably arranged such they are positioned mainly parallel with the direction of rotation when it is rotating against the stream.

Description

POWER PLANT
TECHNICAL AREA The present invention relates to a power plant and in particular a power plant capable of utilizing in air and water such as wind, flowing water or wave movement.
BACKGROUND OF INVENTION
Renewable energy sources have received a larger and larger focus during the latest 40 years because mankind cannot for ever consume ending energy sources such as oil, gas and coal, and that these energy sources contribute to the environmental pollution and environmental effects of large dimensions.
Because of this new energy technologies have been developed and exploited, such as power plants that utilize wind force, wave force, tidal wave force and the like, i.e. the movement energy of air or water is utilized in order to create useful energy, in particular electricity.
Of the above mentioned energy technologies, the wind power has come the farthest where there during a number of years are several manufacturers of commercial wind power plants. The most common type of wind power plant is with large, often three blades, propellers that drive electric generators placed in a turret, which in turn is placed on a tower or pillar. A strive is thereby to develop large units that can produce relatively much energy. The criticism against this has been and still is, that these power plants spoil the landscape because they dominate the landscape view, and in particular if more are placed in the vicinity of each other, and that they tend to generate some noise during the rotation of propellers.
As alternative to the above mentioned wind power plants, new technologies have been developed where you try to improve the efficiency at the same time as the inconveniences are minimised. Such a technology is vertical turbines that are equipped with curved spiral blades. In this way a design is obtained that is not as visual as conventional propellers and almost soundless because the turbines rotate with the wind speed. So far the vertical turbines are relatively small and can only deliver electricity to smaller consumers that utilize low voltage systems.
Regarding wave energy plants and/or tidal wave energy plants some research and some tests are being performed with different techniques where one technique may be mentioned comprising buoys moving vertically with the waves. The buoys are connected to linear generators for creating energy. A number of power plants are placed within an area for simplified connection with the power net and in that each unit produces relatively little energy. The drawback with this type of solution is that the "cluster" of power plants within an area of the sea has to be well beyond any routes or fishing water in order not to risk that ships enter these areas. Some also say that a large number of buoys is an ugly sight in a maritime environment.
Another example of new technology is a plate that is pivotally arranged to a base placed on the sea bottom where wave movements make the plate pivot back and forth. This movement is transmitted via hydraulic cylinders to a hydraulic motor/electric energy generator unit for producing energy. The drawback with this type of technology is that each unit produces very little energy because the movement is both limited and relatively slow.
By the above it is apparent that there is room for developments of power plants that in the best way are capable of utilizing both wind energy and water energy.
BRIEF DESCRIPTION OF INVENTION The aim of the present invention is to provide a development of power plants for renewable energy sources.
This aim is obtained by an invention according to the features of the independent claim 1. Preferable embodiments of the invention form the subject of the dependent claims.
According to a main aspect of the invention it is characterised by a device for generating energy comprising a mainly vertical shaft, connection members between the shaft and an electricity generator, support structures attached to the shaft, plate members arranged to said support structures and capable of capturing a water or wind stream in order to obtain a rotation of said shaft, characterised in that said plate member is turnably arranged such that it is positioned mainly parallel to the direction of rotation when it rotates against the stream.
According another aspect of the invention, it is characterised in that the plate members are at least two and whereby at least on of the plate members are arranged turnable.
According to a further aspect of the invention, it is characterised in that at least two of the plate members are arranged turnable.
According to yet an aspect of the invention, it is characterised in that the plate members are arranged to be turned by the stream.
According to yet a further aspect of the invention, it is characterised in that it further comprises means for control of the turning movement.
According to another aspect of the invention, the plate members comprise guide means for guiding the stream against the plate means.
As an alternative, the plate member may be concave.
The advantages with the present invention are several. Due to that the plate members are turnable between a position where they are placed perpendicular to the energy stream, to a position mainly parallel with the rotational direction when they move against the energy stream, the plate members create a momentum around the shaft when they follow the energy stream and minimize the resistance when they are moving against he energy stream. In this way a large turning momentum is created that is used to drive an electric generator. Due to its design the device can be used for different energy streams such as wind power, water power, wave power and tidal wave power. Due to its design with vertical drive shaft no high and disturbing constructions are required as are required with conventional wind power plants with large propellers. The reduced height is also an advantage if the device is placed on the sea bottom for utilizing wave or tidal wave power. The design of the device further does not require any auxiliary constructions as is the case with conventional water power plants but may be placed directly in the flow of a river.
The plate members may either be arranged to turn automatically by the energy stream, i.e they are suspended such that when the plate members are rotated against the energy stream, this turns the plate members so that they are generally parallel with the energy stream, which reduces the resistance. It is however feasible that the plate members are arranged with some type of control means such as hydraulic cylinders, friction breaks and the like for controlling the movement of the plate members. A more controlled movement means reduced risk of wear on the construction as well as minimizing noise, vibrations and unbalanced loads on the construction.
Preferably the plate members are arranged and designed such that they optimize the energy obtaining ability, whereby they may be somewhat concave and arranged with guide plates on the upper and under side for preventing the energy stream from sneaking past the edges of the plate members.
These and other aspects of and advantages with the present invention will become apparent from the following detailed description of the invention and from the accompanying drawings.
BRIEF DESCRIPTION OF DRAWINGS In the following detailed description of the invention, reference will be made to the accompanying drawings, which schematically show principle sketches of the present invention. DETAILED DESCRIPTION OF THE INVENTION
In the figure is shown schematically the principle of the present invention. It comprises a central shaft 10, mainly vertically directed. To the shaft a generator 12 for producing electricity is connected, which either could be directly or via a suitable transmission.
To the shaft a first support structure 14 is attached, which in the embodiment shown comprises four arms 16, which form a cross with the shaft in the centre. Along the shaft a second support structure 18 is then arranged, also comprising four arms 20. Between respective arm of the first and second support structure power collecting means 22 are arranged, thus four in the embodiment shown where two are shown only with broken lines for clarity. These power collecting means comprise plate-like members 24, preferably two per power collecting means.
According to one variant, one plate member in a pair can be fixedly attached to the arms while the other is tumably arranged to the arms in a manner that will be described below. The turnable plate member is turnable from one position where one of its side edges mainly abuts the side edge of the other plate member, the right pair in the figure, to a position where it is arranged mainly in the direction of rotation, the left pair in the figure.
The device is intended to function as follows. An energy stream 26, water or air, is acting on the plate members of the power collecting means when these are folded out according to the right pair, which energy stream creates a turning momentum on the shaft 10, whereby the device rotates. In order to minimize the losses and thereby facilitate the rotation, the turnable plate member is arranged such that when that pair rotates against the energy stream, the turnable member will be turned such that it is arranged mainly parallel with the direction of rotation, which reduces the resistance.
Of the above it is to be understood that also the other plate member in the pair may be designed turnable between the above mentioned positions in order to further reduce the resistance when the pair is rotating against he energy stream. It is further to be understood that one or both of the plate members either can be turned spontaneously by the energy stream between a position where they are in contact with each other and catch the energy stream to a position where one or both of the plate members are abutting a stop, or that this turning movement is guided or controlled by suitable guide means such as hydraulic cylinders 30, friction brakes or the like. The latter gives the advantage that sudden movements and load changes and thereby noise and/or vibrations are minimized in the construction. Also other types of dampening means for the movement of the plate members are feasible.
Further the plate members may be designed with guide plates 32 arranged to the upper and lower edges for preventing the energy stream from finding its way over and under these edges respectively. Further it is feasible that the plates have a somewhat curved or concave form in order to guide the energy flow.
The shown embodiment is arranged with four power collecting means, but of course it may be designed with another number depending on area of use and/or type of medium that creates an energy stream.
As seen in figure 2 the generator 12 can be placed above the rotor, for example if the power plant is placed below the water surface 30 in a flowing river. The device may then be arranged with a sturdy post 32 with anchoring means 34 for attachment on the bottom.
It is to be understood that the embodiment described above and shown in the drawings is to be regarded only as a non-limiting example of the invention and that it may be modified in many ways within the scope of the patent claims.

Claims

PATENT CLAIMS
1. Device for generating energy comprising a mainly vertical shaft (10);
- connection members between the shaft and an electricity generator;
- support structures (14, 16) attached to the shaft; - plate members (24) arranged to said support structures and capable of catching a water or wind stream (26) in order to obtain a rotation of said shaft; characterised in that said plate members (24) are turnably arranged such they are positioned mainly parallel with the direction of rotation when it is rotating against the stream.
2. Device according to claim 1 , wherein the plate members are at least two and wherein at least one of the plate members is arranged turnable.
3. Device according to claim 2, wherein at least two of the plate members are arranged turnable.
4. Device according to any of the preceding claims, wherein the plate members are designed to be turned by the stream.
5. Device according to any of the preceding claims, wherein it comprises means
(30) for control of the turning movement.
6. Device according to claim 5, wherein the control means comprise break means.
7. Device according to any of the preceding claims, wherein the plate members comprise guide means (32) for guiding the stream against the plate members.
8. Device according to any of the preceding claims, wherein the plate members are designed concave.
9. Device according to any of the preceding claims, wherein it comprises a number of plate members.
PCT/SE2009/051174 2008-10-27 2009-10-15 Power plant WO2010050879A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0850056-3 2008-10-27
SE0850056A SE0850056A1 (en) 2008-10-27 2008-10-27 Power plant

Publications (1)

Publication Number Publication Date
WO2010050879A1 true WO2010050879A1 (en) 2010-05-06

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ID=42129052

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WO (1) WO2010050879A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106401838A (en) * 2016-11-24 2017-02-15 徐文和 Multi-shaft concentric blade self-locking type turbine
CN107131086A (en) * 2017-05-23 2017-09-05 合肥工业大学 A kind of power station using ocean currents for ocean lighthouse electricity consumption
CN107152370A (en) * 2017-05-23 2017-09-12 合肥工业大学 A kind of double-tower type vertical axis planar chip power station using ocean currents

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH606802A5 (en) * 1977-10-24 1978-11-15 Hermann Huebscher Wind-driven generator with articulated blades
GB2000233A (en) * 1977-06-21 1979-01-04 Brzozowski W Wind energy generator
GB1599653A (en) * 1977-07-20 1981-10-07 Evans F C Form of windmill
US4534703A (en) * 1983-08-30 1985-08-13 Flavell George A Wind power system
WO2002038954A1 (en) * 2000-11-13 2002-05-16 Ursua Isidro U Vertical axis wind turbine
US20030235498A1 (en) * 2002-06-24 2003-12-25 Boatner Bruce E. Vertical axis wind engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000233A (en) * 1977-06-21 1979-01-04 Brzozowski W Wind energy generator
GB1599653A (en) * 1977-07-20 1981-10-07 Evans F C Form of windmill
CH606802A5 (en) * 1977-10-24 1978-11-15 Hermann Huebscher Wind-driven generator with articulated blades
US4534703A (en) * 1983-08-30 1985-08-13 Flavell George A Wind power system
WO2002038954A1 (en) * 2000-11-13 2002-05-16 Ursua Isidro U Vertical axis wind turbine
US20030235498A1 (en) * 2002-06-24 2003-12-25 Boatner Bruce E. Vertical axis wind engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106401838A (en) * 2016-11-24 2017-02-15 徐文和 Multi-shaft concentric blade self-locking type turbine
CN106401838B (en) * 2016-11-24 2018-11-06 徐文和 The concentric blade self-locking turbine of multiaxis
CN107131086A (en) * 2017-05-23 2017-09-05 合肥工业大学 A kind of power station using ocean currents for ocean lighthouse electricity consumption
CN107152370A (en) * 2017-05-23 2017-09-12 合肥工业大学 A kind of double-tower type vertical axis planar chip power station using ocean currents

Also Published As

Publication number Publication date
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