WATER POWERED TURBINE AND TURBINE SYSTEMS
Disclosed herein are turbines and turbine systems that may be used to generate power and/or electricity from flowing water or may be used in various other applications such as the pumping of water. One embodiment of the disclosed turbines includes a plurality of blades that may be connected to a turbine housing by a hinge so that the blades are movable between an active state, wherein the blade is configured to contribute to the rotational movement of the turbine, and a passive state, wherein the blade is configured to minimally resist the rotation of the turbine. Turbine blades are disclosed with specific features that more efficiently capture water flow power.
Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENTNot applicable.
NAMES OF PARTIES TO A JOINT RESEARCH AGREEMENTNot applicable.
APPENDIX MATERIALNot applicable.
BACKGROUND OF THE INVENTION1. The Field of the Invention
The present disclosure relates generally to turbines. More specifically the present disclosure relates to water powered turbines and water powered turbine systems.
2. The Relevant Technology
Throughout history, the power of water flow has been used to perform work. Historically, waterwheels were used take advantage of the power of flowing rivers and streams in order to grind grain or perform other labor.
Presently, water turbines are commonly used for energy generation at power plants located at rivers or other locations where the power of water flow can be converted into electricity. Water interacts with the blades of a turbine causing rotational movement of the turbine. The turbine is coupled to a generator so that the rotational movement of the turbine may be converted into electricity. Further, water turbines may be used to for other purposes besides electricity generation. Water turbines may also pump water for irrigation, for example.
Energy consumption around the world is rising. Therefore, the methods of energy generation are constantly in need of expansion and innovation. Generation of energy from water flow is one prominent method of energy generation, and the locations at which water flow may be converted to energy are diverse, including, for example, streams, rivers, tidal basins, oceans, lakes, aqua-ducts, irrigation canals, and sewers. These locations are highly varied and are comprised of various sizes, shapes, water volumes, depths, and flow characteristics. The possible applications for power generating water turbines are seemingly limitless. Thus, improvements in the art of water turbines are constantly needed.
Additionally, public concern has risen over finite energy resources such as coal and oil, which have adverse side-effects on the environment. Therefore, there is significant public interest in attempts to harness energy from infinite and renewable resources that have limited or no adverse effects upon the environment. Water flow provides an additional source of renewable energy, and the use of turbines to convert water flow to energy has few, if any, adverse effects on the environment. Therefore, improved systems and methods of harnessing energy from water flows addresses public interest in renewable and non-pollutant energy sources.
BRIEF SUMMARY OF THE INVENTIONDisclosed herein are turbines and turbine systems that may be used to generate power and/or electricity from flowing water. Additionally, the turbines and turbine systems of the present disclosure may be used for various other applications such as the pumping of water for irrigation applications.
One embodiment of a turbine includes a housing and a shaft, with a plurality of blades each coupled to the shaft and extending outside the outer perimeter of the housing. Each of the plurality of blades may be connected to the housing by a hinge so that the blades are movable between an active state, wherein the edge of the blade opposite of the hinge is forced against a stop located on the housing, and a passive state, wherein the edge of the blade opposite of the hinge is urged away from the stop on the housing. In the active state the blade is configured to contribute to the rotational movement of the turbine, and in the passive state the blade is configured to provide minimum resistance to the rotation of the turbine.
In some embodiments, multiple turbines may be combined in stacked or gang configurations so that the rotational movement of multiple turbines may be used to generate electricity or to perform other work. In some embodiments, turbines may be stacked in a staggered configuration that improves the energy generation or work performed by the combination of turbines.
In other embodiments, the blades of a turbine may be configured with a scimitar-shaped edge, which contributes to the blades movement between an active state and a passive state. In yet other embodiments, the blades of a turbine may be curved to maximize the power obtained from flowing water.
In one embodiment, the blades of a turbine may be constructed from readily available materials such as pipes. This may reduce the manufacturing costs of turbines. Additionally, in some embodiments, the pipes that are used to manufacture the blades of a turbine may also be used for the shaft of the turbine.
In one embodiment, the switching of the blades of a turbine between an active state and a passive state drive the rotation of the turbine in a single direction, e.g., counter-clockwise. When the rotation of the blades is with the flow of water, the blades move to an active state and provide resistance to the flow of water, which contributes to the rotation of the turbine. When the rotation of the blades is against water flow, the blades move to a passive state in order to minimize resistance to the flow of water. In this way, the blades of a turbine may be configured to contribute resistance to the flow of water only when the blades are rotating with the flow of water. This configuration drives the rotation of the turbine in a single direction.
The disclosed turbines and turbine systems may be combined and configured for a variety of applications including, for example, use in streams, rivers, tidal basins, oceans, aqua-ducts, irrigation canals, dams, and/or sewers.
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
These and other embodiments and features of the present invention will become more fully apparent from the following description and appended claims, or may be learned by the practice of the invention as set forth hereinafter.
To further clarify the above and other advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
This detailed disclosure relates to turbines, turbine systems, and methods of making and using turbines and turbine systems. Several exemplary embodiments of turbines will now be disclosed with reference to the appended figures.
As shown in
Blades 140a-f of turbine 100 extend away from shaft 130 outside of outer perimeters 112, 122 of upper portion 110 and lower portion 120, respectively. In one embodiment, blades 140a-f extend away from shaft 130 such that ⅓ of the length of the blades 140a-f remain inside of, and ⅔ of the blades 140a-f remain exterior to, the outer perimeters 112, 122 of upper portion 110 and lower portion 120. However, in other embodiments any proportion of blades 140a-f may be exterior to the outer perimeters 112, 122 of upper portion 110 and lower portion 120. Indeed, in some embodiments, the entirety of blades 140a-f may remain inside the outer perimeters 112, 122 of upper portion 110 and lower portion 120.
Blades 140a-f are coupled to upper portion 110 of turbine 100. As shown in
Stops 150a-f are coupled to the lower portion 120 of turbine 100. Stops 150a-f prevent blades 140a-f from complete hinged rotation when moving from a passive state to an active state. In another embodiment, the stops may be located on the upper portion 110 of turbine 100. The function of stops 150a-f will be described further with reference to
In
In some applications, turbine 100 is placed in flowing water. The movement of the flowing water exerts a force on blades 140a-f to cause rotation of turbine 100. The rotational movement of turbine 100 may be harnessed and converted to energy by connecting turbine 100 to an electrical generator or the like, as is known in the art. Additionally, the rotational movement of turbine 100 may be used to perform other work such as to pump water as part of an irrigation system. One of skill in the art will recognize many useful and varied applications of turbine 100.
The description of an upper portion 110 and a lower portion 120 is in no way limiting and the use of the words “upper” and “lower” is for convenience only in referring to the several figures. Thus, the configuration of turbine 100 may be inverted such that upper portion 110 is below lower portion 120. Therefore, the use of directional language is solely for the convenience of the reader and in no way limits the disclosure and/or claims. One of skill in the art will readily recognize that inversions, mirror images, rotations, and or other reconfigurations may be made within the scope of this disclosure and within the scope of the appended claims.
Now, with reference to
The turbines 210, 220, 230 of turbine 200 are shown in a staggered configuration. For example, each turbine 210, 220, 230 is shown in
Line 270 of
The curvature of blade 340 is defined by an angle 348. As shown in
Further shown in
As turbine 400 rotates, the water flow direction with respect to blade 440 changes so that blade 440 alternates between an active state and a passive state. In embodiments wherein multiple blades are included as part of a turbine, some blades may be in an active state, some blades may be in a passive state, and/or some blades may be in a state between an active state and a passive state.
The switching of the blades of a turbine between an active state and a passive state drive the rotation of the turbine in a single direction. When the rotation of the blades of a turbine is with the flow of water, the blades move to an active state and provide resistance to the flow of water, which contributes to the rotation of the turbine. When the rotation of the blades is against the flow of water, the blades move to a passive state in order to minimize resistance to the flow of water. In this way, the blades of a turbine may be configured to contribute resistance to the flow of water only blades are rotating with the flow of water. This configuration drives the rotation of the turbine in a single direction. For example, the embodiment of turbine 400 shown in
The transitioning of blades between active states and passive states is dictated primarily, or completely, by water flow. Thus, embodiments of turbines will not need to be reconfigured to adapt to changes in the flow characteristics of the surrounding water. For example, in an embodiment in which a turbine is used to harness energy from tidal waters, the blades on a first side a the turbine will be urged into the active state in order to harness energy from the flowing tide, while the blades on the second side will be urged to the passive state to minimally resist the flowing tide. The flow characteristics of the tidal waters change direction as the tide transitions from a flowing tide to an ebbing tide. When the tide ebbs, the blades on the first side of the turbine may be urged into a passive state to minimally resist the ebbing tide, while the blades on the second side will be urged into the active state in order to harness energy from the ebbing tide.
Blades for the disclosed turbines do not need to be manufactured from pipes in accordance with
As described with reference to
The turbines of
In addition to the vertical stack configuration of
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims
1. A water power turbine comprising:
- a housing comprising a first portion and a second portion, wherein the size of the housing is defined by an outer perimeter;
- a shaft extending between at least the first portion and the second portion of the housing;
- a plurality of blades, each of the plurality of blades comprising a first end, a second end, a leading edge, and a trailing edge; wherein the first end of each of the plurality of blades is positioned inside the outer perimeter of the housing, wherein the second end of each of the plurality of blades is positioned outside the outer perimeter of the housing, and wherein each of the plurality of blades is hingedly coupled to the housing at the leading edge of the blade;
- a plurality of stops, each stop corresponding to one of the plurality of blades, wherein each stop is coupled to the housing; and
- each of the plurality of blades is independently movable between an active state, wherein the trailing edge of the blade is forced against one of the plurality of stops, and a passive state, wherein the trailing edge of the blade is urged toward a position substantially co-planar with the first portion of the housing.
2. A water power turbine according to claim 1, wherein each of the plurality of blades is hingedly coupled to the first portion of the housing, and wherein the plurality of stops is coupled to the second portion of the housing.
3. A water power turbine according to claim 1, wherein the second end of each of the plurality of blades is scimitar-shaped.
4. A water power turbine according to claim 3, wherein the scimitar-shaped second end of each of the plurality of blades is at an angle of about 45°.
5. A water power turbine according to claim 1, wherein at least one of the plurality of blades extends outside the outer perimeter of the housing such that approximately ⅓ of the at least one of the plurality of blades is positioned inside the outer perimeter of the housing, and approximately ⅔ of the at least one of the plurality of blades is positioned outside the outer perimeter of the housing.
6. A water power turbine according to claim 1, wherein the plurality of blades comprises six blades positioned at about 60° separations around the shaft.
7. A water power turbine according to claim 1, wherein each of the plurality of blades comprises about a 90° arc of curvature between the leading edge and the trailing edge.
8. A water power turbine system comprising:
- a plurality of turbines, each turbine comprising: a housing comprising a first portion and a second portion, wherein the size of the housing is defined by an outer perimeter; a shaft extending between at least the first portion and the second portion of the housing; a plurality of blades, each of the plurality of blades comprising a first end, a second end, a leading edge, and a trailing edge; wherein the first end of each of the plurality of blades is positioned inside the outer perimeter of the housing, wherein the second end of each of the plurality of blades is positioned outside the outer perimeter of the housing, and wherein each of the plurality of blades is hingedly coupled to the first portion of the housing at the leading edge of the blade; a plurality of stops, each stop corresponding to one of the plurality of blades, wherein each stop is coupled to the second portion of the housing; and each of the plurality of blades is independently movable between an active state, wherein the trailing edge of the blade is forced against one of the plurality of stops, and a passive state, wherein the trailing edge of the blade is forced upward toward the first portion of the housing.
9. A water power turbine system according to claim 8, wherein the plurality of turbines are coupled together in a vertical stack.
10. A water power turbine system according to claim 8, wherein the plurality of turbines comprises a first turbine and a second turbine, the plurality of blades of the first turbine being spaced at a predetermined interval of separation, the plurality of blades of the second turbine being spaced at the predetermined interval of separation, wherein the first turbine and second turbine are staggeredly coupled together in a vertical stack such that the plurality of blades of the first turbine are staggered in relation to the blades of the second turbine.
11. A water power turbine system according to claim 10, wherein plurality of blades for each of the first and second turbines comprises six blades, and wherein the interval of separation is 60°.
12. A water power turbine system according to claim 11, wherein the second turbine is staggered at 30° rotation with respect to the first turbine.
13. A water power turbine system according to claim 8, wherein the plurality of turbines are coupled together in gang configuration.
14. A water power turbine system according to claim 13, wherein the plurality of turbines are coupled together in a gang configuration with at least one pulley.
15. A water power turbine system according to claim 8, wherein the plurality of turbines comprises multiple turbine stacks, wherein each turbine stack comprises a plurality of turbines coupled together in a vertical stack, and wherein the multiple turbine stacks are coupled together in a gang configuration.
16. A water power turbine system comprising:
- A first turbine comprising: a housing comprising a first portion and a second portion, wherein the size of the housing is defined by an outer perimeter; a shaft extending between at least the first portion and the second portion of the housing; a plurality of blades, each of the plurality of blades comprising a first end, a scimitar-shaped second end, a leading edge, and a trailing edge, wherein each of the plurality of blades extends outside the outer perimeter of the housing such that approximately ⅓ of each of the plurality of blades is positioned inside the outer perimeter of the housing, and approximately ⅔ of each of the plurality of blades is positioned outside the outer perimeter of the housing, and wherein each of the plurality of blades is hingedly coupled to the first portion of the housing at the leading edge of the blade; the plurality of blades further comprising about a 90° arc of curvature between the leading edge and the trailing edge; a plurality of stops, each stop corresponding to one of the plurality of blades, wherein each stop is coupled to the second portion of the housing; and each of the plurality of blades is independently movable between an active state, wherein the trailing edge of the blade is forced against one of the plurality of stops, and a passive state, wherein the trailing edge of the blade is forced upward toward the first portion of the housing.
17. A water power turbine system in accordance with claim 16, further comprising a second turbine coupled to the first turbine in a vertical stack configuration.
18. A water power turbine system in accordance with claim 17, wherein the plurality of blades of the first turbine are spaced at a predetermined interval of separation, the second turbine comprising a plurality of blades spaced at the predetermined interval of separation, wherein the first turbine and second turbine are staggeredly coupled together in the vertical stack such that the plurality of blades of the first turbine are staggered in relation to the plurality of blades of the second turbine.
19. A water power turbine system according to claim 18, wherein the plurality of blades of the first turbine comprises six blades, wherein the plurality of blades of the second turbine comprises six blades, and wherein the interval of separation is 60°.
20. A water power turbine system according to claim 19, wherein the second turbine is staggered at 30° rotation with respect to the first turbine.
Type: Application
Filed: Jul 15, 2010
Publication Date: Jan 19, 2012
Inventor: Kenneth L. Allison (Hurricane, UT)
Application Number: 12/837,301
International Classification: F04D 29/54 (20060101);