US20130195623A1

US20130195623A1 - Hydraulic turbine and hydroelectric structure using the same

Info

Publication number: US20130195623A1
Application number: US13/378,354
Authority: US
Inventors: Kwang Ok Chung; Hae Kwon Jung; Jun Hong Jung
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-30
Filing date: 2011-05-20
Publication date: 2013-08-01
Also published as: KR101003296B1; CN105221320A; JP2013538314A; CN102959233A; WO2012030051A1; JP6061151B2

Abstract

The present invention relates to a hydraulic turbine for generating hydraulic power 100 comprising a rotating shaft 110 which is formed in a vertical direction; and a plurality of rotating wings 120 which is installed in a radial direction centering on the rotating shaft 110 to thereby efficiently convert hydraulic power from river into electric energy without building a dam.

Description

TECHNICAL FIELD

The present invention relates to a civil engineering field, and more particularly, to a hydroelectric structure.

BACKGROUND ART

Tidal power from ocean and hydraulic power from river are clean energy sources which accompany little environmental pollution, and there have been continuous studies on efficient application of such energy sources.
In particular, water continuously flows in a certain direction in river, and rotation of a hydraulic turbine (power generating propeller) may enable power generation. Compared to tidal power generation, hydraulic power generating equipment is easy to manufacture and operate.
A conventional hydraulic power generation is conducted by building a dam in a river and converting potential energy of water generated from head of the dam into kinetic energy of the hydraulic turbine.
However, the conventional art requires construction of the dam and causes a lot of costs and a submerged area by a retention part of the dam.

DISCLOSURE

Technical Problem

The present invention has been made to solve the problems and it is an object of the present invention to provide a hydraulic turbine and a hydroelectric structure using the same which efficiently converts hydraulic power from river into electric energy without building a dam.

Technical Solution

In order to achieve the object of the present invention, a hydraulic turbine for generating hydraulic power 100 comprises a rotating shaft 110 which is formed in a vertical direction; and a plurality of rotating wings 120 which is installed in a radial direction centering on the rotating shaft 110.
The plurality of rotating wings 120 has a longitudinal section that is curved in a certain direction.
The plurality of rotating wings 120 comprises an auxiliary wing 123 that is formed in a surface of the plurality of rotating wings 120 in a certain direction.
The rotating wings 120 have a cross section that gradually decreases toward an external end part.
The rotating wings 120 comprise a hollow part 121 that is formed therein and is prevented from receiving water.
A hinge part 111 is formed and protrudes from a lateral side of the rotating shaft 110, and the rotating wings 120 are hingedly driven in a rotating direction with respect to the hinge part 111.
A plurality of contact surfaces 122 a and 122 b which has different inclinations is formed in an internal end part of the rotating wings 120 and contacts an external wall of the rotating shaft 110.
In order to achieve the object of the present invention, a hydroelectric structure comprises a flow path blocking member 200 which is installed to block a part of flow of water and forms a power generating flow path a; a hydraulic turbine 100 according to one of claims 1 to 7, wherein the rotating wing 120 formed in a first side of the rotating shaft 110 is located in a lower side of the flow path blocking member 200 and the rotating wing 110 formed in a second side of the rotating shaft 110 is exposed to the power generating flow path a.
A flow rate increasing member 300 is installed in a second side of the rotating shaft 110 to form the power generating flow path a together with the flow path blocking member 200.
The flow path blocking member 200 and the flow rate increasing member 300 are installed to form a gap gradually decreasing toward an installation location of the hydraulic turbine 100.
The flow path blocking member 200 and the flow rate increasing member 300 protrude inwardly and are curved.
An external pile 400 a is installed in a second side of the hydraulic turbine 100, and the flow rate increasing member 300 is installed in the external pile 400 a.
The external pile 400 a has upper and lower end parts that are sharp and streamlined.
The flow path blocking member 200 has an upper end part that is sharp and streamlined, and a pair of flow rate increasing members 300 are installed in both sides of the flow path blocking member 200, and the hydraulic turbine 100 is installed in the pair of power generating flow paths a formed between the flow path blocking member 200 and the pair of flow rate increasing members 300.
A lower end part of the flow path blocking member 200 is concave toward the lower part thereof.
The external pile 400 a is installed plurally, and a deck 410 which extends from the ground is installed in an upper part of the plurality of external piles 400 a.
A power generating device 420 which is connected to the rotating shaft 110 is installed in an upper part of the deck 410.
A weir b is formed in a lower side of the hydraulic turbine 100.
The weir b is formed to have an upper side with a sharp inclination and a lower side with a gradual inclination.
The plurality of flow path blocking members 200 is installed in the pair of flow rate increasing members 300, and the internal pile 400 b is installed in the plurality of flow path blocking members 200, and the power generating flow path a is formed between the flow path blocking member 200 and the internal pile 400 b and between the flow rate increasing member 300 and the flow path blocking member 200, and the hydraulic turbine 100 is installed in the plurality of power generating flow paths a.
The internal pile 400 b has upper and lower end parts that are sharp and streamlined.
The flow path blocking member 200 comprises a pile part 200 a which has a streamlined section; and a hydraulic turbine accommodation groove 201 which is formed in one side or both sides of the pile part 200 a to accommodate the rotating wing 120 formed in one side of the rotating shaft 110 of the hydraulic turbine 100.

Advantageous Effect

As described above, a hydraulic turbine and a hydroelectric structure using the same according to the present invention efficiently converts hydraulic power from river into electric energy without building a dam.

BRIEF DESCRIPTION OF DRAWINGS

FIGS. 1 to 11 illustrate exemplary embodiments of the present invention.

FIG. 1 is a plan view of a hydroelectric structure according to a first exemplary embodiment of the present invention.

FIG. 2 is a perspective view of a rotating wing.

FIG. 3 is a longitudinal sectional view of the rotating wing.

FIG. 4 is a sectional view of main parts of a hydraulic turbine.

FIG. 5 illustrates a usage of the hydraulic turbine.

FIG. 6 is a plan view of a hydroelectric structure according to a second exemplary embodiment of the present invention.

FIG. 7 is a plan view of a hydroelectric structure according to a third exemplary embodiment of the present invention.

FIG. 8 is a front view of the hydroelectric structure according to the third exemplary embodiment of the present invention.

FIG. 9 is a lateral view of the hydroelectric structure according to the third exemplary embodiment of the present invention.

FIG. 10 is a plan view of a hydroelectric structure according to a fourth exemplary embodiment of the present invention.

FIG. 11 is a plan view of a hydroelectric structure according to a fifth exemplary embodiment of the present invention.

DESCRIPTION OF REFERENCE NUMERALS

a: power generating flow path b: weir
100: hydraulic turbine 110: rotating shaft
111: hinge part 120: rotating wing
121: hollow part 122 a and 122 b: contact surfaces
200: flow path blocking member 300: flow rate increasing member
400 a: external pile 400 b: internal pile
410: deck 420: power generating device

BEST MODE

Hereinafter, a hydraulic turbine and a hydroelectric structure using the same according to an exemplary embodiment of the present invention will be described in detail with reference to accompanying drawings.
As shown in FIG. 1, a hydraulic turbine for generating hydraulic power 100 according to the present invention includes a rotating shaft 110 which is formed in a vertical direction; and a plurality of rotating wings 120 which is installed in a radial direction centering on the rotating shaft 110.
That is, compared to a general rotating shaft of a hydraulic turbine formed in a horizontal direction (water flowing direction), the hydraulic turbine 100 according to the present invention includes the rotating shaft 110 formed in a vertical direction (vertical direction with respect to a water flowing direction).
With the foregoing configuration, the rotating shaft 110 according to the present invention may increase a contact area of the rotating wing 120 and water and accordingly enhance power generating efficiency by hydraulic power.
However, the foregoing configuration allows a part of the rotating wings 120 to be driven in a forward direction by flow of water but another part to be driven in a reverse direction with respect to the flow of water, which impedes a rotation.
To solve the foregoing problem, as shown in FIG. 1, the flow path blocking member 200 blocks part of the flow of water and forms a power generating flow path a to thereby minimize the impediment by the rotation in the reverse direction.
That is, if the hydraulic turbine 100 is installed that the rotating wing 120 formed in a first side of the rotating shaft 110 is located in a lower part of the flow path blocking member 200 and the rotating wing 120 formed in a second side of the rotating shaft 110 is located to be exposed to the power generating flow path a, the rotating shaft 110 is provided in the vertical direction and the hydraulic turbine 100 may rotate by the flow of water.
Further, if a longitudinal section of the plurality of rotating wings 120 is curved in a certain direction (the longitudinal section of the rotating wing 120 exposed to the power generating flow path a protrudes to the lower part of the flow path blocking member 200), the rotating wing 120 exposed to the power generating flow path a receives great resistance from water, and the rotating wing 120 provided in an opposite direction becomes streamlined and receives less resistance from water, to thereby rotate smoothly (refer to FIGS. 1 and 2).
If an auxiliary wing 123 is formed and protrudes from a surface provided in a certain direction of the plurality of rotating wings 120 (same rotating direction), water contacting and flowing along the rotating wing 120 also contacts the auxiliary wing 123. This enables more hydraulic energy to be transmitted to the rotating wing 120 (refer to FIG. 5).
Forming a cross section of the rotating wing 120 to gradually decrease toward an external end part thereof may reduce an occurrence of turbulence.
If a hollow part 121 to which water is prevented from being introduced is formed within the rotating wing 120, the rotating wing 120 becomes lighter by buoyancy of air in the hollow part 121 and the rotation of the hydraulic turbine 100 by the hydraulic power may be facilitated.
If a hinge part 111 is formed and protrudes from a lateral side of the rotating shaft 110 and the rotating wing 120 is installed to be hingedly driven in a rotating direction with respect to the hinge part 111, the rotating wing 120 unfurls and is driven if exposed to the power generating flow path a, and furls and is driven if not exposed thereto. In this regard, if the rotating wing 120 is driven in the reverse direction, water resistance may be further reduced (FIGS. 4 and 5).
If a plurality of contact surfaces 122 a and 122 b whose inclination are different from each other is formed in an internal end part of the rotating wing 120 and contacts an external wall of the rotating shaft 110, each of the contact surfaces 122 a and 122 b contacts the external wall of the rotating shaft 110 upon driving of the unfurled and furled rotating wing 120, and the hinged driving of the rotating wing 120 may be more stable (FIGS. 4 and 5).
Hereinafter, a hydroelectric structure using the hydraulic turbine for generating hydraulic power 100 according to an exemplary embodiment will be described.
If a flow rate increasing member 300 is formed in a second side of the rotating shaft 110 to form the power generating flow path a together with the flow path blocking member 200, flow of water is focused on the power generating flow path a and power generating efficiency may increase (FIG. 6).
If the flow path blocking member 200 and the flow rate increasing member 300 are installed to form a gap gradually decreasing toward an installation location of the hydraulic turbine 100, the foregoing effect may be enhanced (FIG. 6).
If the flow path blocking member 200 and the flow rate increasing member 300 are curved and protrude toward inside, a more stable flow rate and faster flow velocity within the power generating flow path a may be ensured.
The flow rate increasing member 300 may be larger than the flow path blocking member 200. To do the foregoing, an external pile 400 a is firstly installed in a second side of the hydraulic turbine 100, and then the flow rate increasing member 300 which is shaped like a panel is installed for conveniences.
The external pile 400 a which is a basis for installing the flow rate increasing member 300 may have a circular section. However, if upper and lower end parts of the external pile 400 a are sharp and streamlined, installation of the external pile 400 a is easy and the impediment of flow of water in the power generating flow path a may be minimized.
As shown in FIG. 7, if (i) the upper end part of the flow path blocking member 200 is sharp and streamlined, (ii) a pair of flow rate increasing member 300 is installed in both sides of the flow path blocking member 200, and (iii) the hydraulic turbine 100 is installed in the pair of power generating flow paths a formed between the flow path blocking member 200 and the pair of flow rate increasing members 300, the pair of power generating flow paths a is efficiently installed and the hydraulic turbine 100 is installed in each of the power generating flow paths a to thereby improve power generating efficiency to effort and cost.
The lower end part of the flow path blocking member 200 which is concave toward the lower part may minimize resistance of water by the driving of the rotating wing 120 in the reverse direction.
If the plurality of external piles 400 a is installed and a deck 410 extending from the ground is installed in an upper part of the plurality of external piles 400 a to thereby install the plurality of flow rate increasing members 300, construction and maintenance of the hydroelectric structure is easy (refer to FIGS. 8 and 9).
Installing a power generating device 420 connected to the rotating shaft 110 in an upper part of the deck 410 may ensure easy installation and maintenance of the power generating device 420 (refer to FIGS. 8 and 9).
A weir b is formed in a lower part of the hydraulic turbine 100, and the load of flow of water beyond the weir b may be focused on the hydraulic turbine 10 (refer to FIGS. 8 and 9).
More specifically, the weir b may be formed to have a sharp inclination in an upper part and a gradual inclination in a lower part.
Further, as shown in FIG. 10, if (i) the plurality of flow path blocking members 200 is installed between the pair of flow rate increasing members 300, (ii) an internal pile 400 b is installed in the plurality of flow path blocking members 200, (iii) the power generating flow path a is formed between the flow path blocking member 200 and the internal pile 400 b and between the flow rate increasing member 300 and the flow path blocking member 200, and (iv) the hydraulic turbine 100 is installed in each of the plurality of power generating flow paths a, the power generating efficiency to effort and cost may be enhanced.
If the upper and lower end parts of the internal pile 400 b are sharp and streamlined like the external pile 400 a, the internal pile 400 b may be installed without difficulty and the impediment to the flow of water in the power generating flow path a may be minimized.
If the hydroelectric structure is small in size, the flow path blocking member 200 may be configured to include a pile part 200 a which has a streamlined section; and a hydraulic turbine accommodation groove 201 which is formed in one side or both sides of the pile part 200 a to accommodate the rotating wing 120 formed in one side of the rotating shaft 110 of the hydraulic turbine 100 (refer to FIG. 11).
The flow path blocking member 200 may be installed by the same method as that of the piles 400 a and 400 b, and the hydraulic turbine 100 may be installed in the hydraulic turbine accommodation groove 201 after the installation of the flow path blocking member 200. Then, a small-sized hydroelectric structure may be formed in an economical way.
Although a few exemplary embodiments have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these exemplary embodiments without departing from the principles and spirit of the invention, the range of which is defined in the appended claims and their equivalents.

Claims

1. A hydraulic turbine for generating hydraulic power comprising:

a rotating shaft which is formed in a vertical direction; and

a plurality of rotating wings which is installed in a radial direction centering on the rotating shaft.

2. The hydraulic turbine according to claim 1, wherein the plurality of rotating wings has a longitudinal section that is curved in a certain direction.

3. (canceled)

4. The hydraulic turbine according to claim 1, wherein the rotating wings have a cross section that gradually decreases toward an external end part.

5. The hydraulic turbine according to claim 1, wherein the rotating wings comprise a hollow part that is formed therein and is prevented from receiving water.

6-7. (canceled)

8. A hydroelectric structure comprising:

a flow path blocking member which is installed to block a part of flow of water and forms a power generating flow path a;

a hydraulic turbine according to claim 1, wherein

the rotating wing formed in a first side of the rotating shaft is located in a lower side of the flow path blocking member and the rotating wing formed in a second side of the rotating shaft is exposed to the power generating flow path a.

9. The hydroelectric structure according to claim 8, wherein a flow rate increasing member is installed in a second side of the rotating shaft to form the power generating flow path a together with the flow path blocking member.

10. The hydroelectric structure according to claim 9, wherein the flow path blocking member and the flow rate increasing member are installed to form a gap gradually decreasing toward an installation location of the hydraulic turbine.

11. The hydroelectric structure according to claim 10, wherein the flow path blocking member and the flow rate increasing member protrude inwardly and are curved.

12. The hydroelectric structure according to claim 10, wherein an external pile is installed in a second side of the hydraulic turbine, and the flow rate increasing member is installed in the external pile.

13. The hydroelectric structure according to claim 12, wherein the external pile has upper and lower end parts that are sharp and streamlined.

14. The hydroelectric structure according to claim 12, wherein the flow path blocking member has an upper end part that is sharp and streamlined, and a pair of flow rate increasing members are installed in both sides of the flow path blocking member, and the hydraulic turbine is installed in the pair of power generating flow paths a formed between the flow path blocking member and the pair of flow rate increasing members.

15. The hydroelectric structure according to claim 14, wherein a lower end part of the flow path blocking member is concave toward the lower part thereof.

16. The hydroelectric structure according to claim 14, wherein the external pile is installed plurally, and a deck which extends from the ground is installed in an upper part of the plurality of external piles.

17. The hydroelectric structure according to claim 16, wherein a power generating device which is connected to the rotating shaft is installed in an upper part of the deck.

18. The hydroelectric structure according to claim 16, wherein a weir b is formed in a lower side of the hydraulic turbine.

19. The hydroelectric structure according to claim 18, wherein the weir b is formed to have an upper side with a sharp inclination and a lower side with a gradual inclination.

20. The hydroelectric structure according to claim 14, wherein the plurality of flow path blocking members is installed in the pair of flow rate increasing members, and the internal pile is installed in the plurality of flow path blocking members, and the power generating flow path a is formed between the flow path blocking member and the internal pile and between the flow rate increasing member and the flow path blocking member, and the hydraulic turbine is installed in the plurality of power generating flow paths a.

21. The hydroelectric structure according to claim 20, wherein the internal pile has upper and lower end parts that are sharp and streamlined.

22. The hydroelectric structure according to claim 8, wherein the flow path blocking member comprises a pile part which has a streamlined section; and a hydraulic turbine accommodation groove which is formed in one side or both sides of the pile part to accommodate the rotating wing formed in one side of the rotating shaft of the hydraulic turbine.