KR20130072395A - Offshore wind power plant - Google Patents

Abstract

PURPOSE: A sea wind power generator is provided to include numerous air paths arranged in a radial direction around an impeller and induce power toward a central impeller regardless of the direction of wind, thereby generating power. CONSTITUTION: A sea wind power generator includes a floating body (10), an impeller (20), a generator (30), and an air guide unit (40). The floating body floats on the surface of the water. The impeller is installed on the center portion of the floating body. The generator is driven by a runner. The air guide unit is provided to guide wind, which is flew from the circumference of the floating body, to the impeller, and includes numerous air paths (44) which are arranged in a radial direction around the impeller.

Description

Offshore wind power plant

The present invention relates to an offshore wind turbine, and more particularly, to an offshore wind turbine that can be installed in a floating state on the surface and can generate power by inducing wind to the van regardless of the wind direction.

Wind power is a technology that generates electricity by driving a generator using wind, which is clean energy. Compared with the existing fossil fuel or uranium power generation method, there is an advantage that environmental pollution such as air pollution and radioactive leakage does not occur.

A typical wind power generator includes a tower fixed to the ground, a nacelle having a generator installed in a rotatable direction from the top of the tower, and a blade installed in the nacelle for driving the generator. All.

However, such a wind turbine is a large structure with a tower height of approximately 100 meters and a blade length of 40 ~ 90 meters, there is a problem that is limited by the installation site. When the plural groups are installed, a large site is required due to the mutual separation distance. In addition, due to the need to be installed in a windy place, such as ridges, the installation and transportation of equipment is difficult, there is a problem that requires a lot of costs for the opening of roads and the construction of power transmission lines.

Therefore, such a wind power generator is relatively easy to secure space and is also installed on a windy sea. When installing on the sea, as shown in Korean Patent Publication No. 10-1046649 (2011. 07. 05. Announcement) (Patent Document 1), after installing the foundation structure on the sea bottom, the tower is fixed to the foundation structure, or As disclosed in -0900500 (2009. 06. 03. notification) (Patent Document 2), a floating structure is installed on the sea and a tower of a wind power generator is installed on the floating structure.

However, such an offshore installation method has a disadvantage in that it is difficult to install the foundation structure or floating structure despite the ease of securing the space, and the safety of the installation is low.

In addition, the above-described wind turbine generator has to be a form in which the nacelle rotates in accordance with the direction of the wind, and the device has a complex problem because it must be equipped with a power transmission system for increasing and transmitting the blade rotation to the generator.

Patent Document 1: Republic of Korea Patent Publication No. 10-1046649 (2011. 07. 05. notification) Patent Document 2: Republic of Korea Patent Publication No. 10-0900500 (2009. 06. 03. notification)

An object of the present invention can be installed in a floating state on the surface of the water, to provide an offshore wind power generator to perform the power generation to guide the wind toward the van, regardless of the wind direction.

Another object of the present invention is to provide an offshore wind power generation apparatus capable of performing both wind power and solar energy power generation.

According to an aspect of the present invention, a flotation supporting the water; An impeller installed in the center of the support body; A generator driven by the vane; The offshore wind power generation device includes an air guide device provided in the support body to guide the wind blowing from the circumference of the support body to a plurality of air passages disposed radially around the wing vehicle. Can be provided.

The air guide device is installed on an upper portion of the lower plate to form the plurality of air flow paths between the lower plate and the lower plate fixed to the buoys, the center is formed with a discharge port through which the wind through the vane is discharged It may include a plurality of air guide plate is installed between the lower plate and the upper plate so as to partition between the upper plate and the plurality of air flow paths and the end of the vane side is bent in the rotation direction of the vane.

The support body may have a bowl shape in which a height of an inner central portion in which the generator and the vane are positioned is lower than an edge portion, and a height of central portions of the upper plate and the lower plate may also be lower in bowl shape.

The air passage may have a shape in which the cross-sectional area gradually decreases from the inlet toward the vane.

The offshore wind turbine may further include an upper cover covering the upper portion of the air guide device and having a plurality of vents for discharging air passing through the vanes.

The solar panel may be installed on the upper surface of the upper cover.

The upper cover may be provided in the form of a dome disposed in the circumference of the plurality of vents, the top plate may include a drain passage provided on the upper surface to collect and discharge the rainwater flowing through the plurality of vents Can be.

The offshore wind turbine may further include a plurality of anti-rotation plates extending from an outer surface of the float to keep the submerged state in order to prevent rotation of the float.

The offshore wind turbine may further include a mooring device for fixing the buoyant on the sea.

The air guide device may further include an inlet opening and closing device for adjusting the opening and closing degree of the inlet of the plurality of air passages.

The inlet opening and closing device may include a plurality of opening and closing wings respectively installed at the inlet of the plurality of air flow paths and supported by the rotating shaft, and a driving device for rotating the rotating shaft of each of the opening and closing blades.

The inlet opening and closing device may include a cylindrical opening and closing member installed to be elevated on the outside of the plurality of air flow path inlet to open and close the plurality of air flow path inlet, and the lifting device for lifting the opening and closing member.

Since the offshore wind turbine generator according to the embodiment of the present invention includes a plurality of air flow paths disposed radially around the vanes, power generation may be performed by inducing wind toward the vanes regardless of the wind direction.

In addition, the offshore wind power generator according to the embodiment of the present invention can be combined with the wind power generation and solar energy generation because the solar panel is installed on the upper cover.

1 is a perspective view of an offshore wind power generator according to a first embodiment of the present invention.
2 is a cross-sectional view of the offshore wind power generator according to the first embodiment of the present invention.
3 is an exploded perspective view of an offshore wind power generator according to a first embodiment of the present invention.
4 is a cross-sectional view taken along line IV-IV of FIG. 2.
5 is a perspective view of an offshore wind power generator according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 show an offshore wind turbine generator according to a first embodiment of the present invention. 1 and 2, the offshore wind power generator according to the first embodiment of the present invention includes a support body 10 that maintains a support state on the surface, an impeller 20 installed at an inner center of the support body 10, and a wing Generator 30, which rotates by the vehicle 20 to generate electricity, is provided with an air guide device 40 installed on the flotation body 10 to guide the wind of the sea to the van.

As shown in FIG. 2, the support body 10 may be provided in a bowl shape in which the inner center portion is lower than the edge portion so that the edge portion rises above the water surface and the inner center portion is positioned below the water surface. Here, the bowl-shaped support body 10 is exemplified, but the support body 10 should be able to support the surface by buoyancy, so the form is not limited thereto. The support 10 may be fixed by one or more mooring devices 12 so that the bottom surface thereof is not moved by waves or tides.

The generator 30 is fixed to the inner central portion of the support body 10, the vanes 20 is mounted to the rotary shaft 31 extending upward from the generator 30. The vanes 20 may rotate to generate electricity by driving the generator 30. This arrangement is such that the heavy generator 30 is mounted on the center of the support body 10 below the water surface so that the support body 10 can stably float even on waves or birds.

The vanes 20 are in the form of a centrifugal fan with a plurality of vanes 21, as shown in FIGS. 3 and 4. The vane 20 can rotate the generator 30 by rotating by the airflow guided around it by the air guide device 40 to be described later. The air flow for rotating the vanes 20 may enter the center of the vanes 20 from the circumference of the vanes 20 and then be discharged upward through the opening 22 above the vanes 20.

2 and 3, the air guide device 40 is installed to be spaced apart from the lower plate 41 on the upper portion of the lower plate 41 and the lower plate 41 fixed to the inner surface of the support body 10. A circular upper plate 42, a plurality of air guide plate 43 is provided between the upper plate 41 and the lower plate 42 to form a plurality of air flow path (44).

The lower plate 41 and the upper plate 42 may be provided in a bowl having a lower height than an edge portion of the inner central portion similar to the shape of the support body 10. At this time, the generator 30 is installed between the flotation body 10 and the lower plate 41, as shown in Figure 2, vanes 20 is installed between the upper plate 42 and the lower plate 41, the generator Rotating shaft 31 of 30 may pass through the center of the lower plate 41 may be connected to the van. In addition, a discharge port 42a for discharging air passing through the vanes 20 is formed at the center of the upper plate 42.

As shown in FIG. 3, the plurality of air guide plates 43 extend radially from the vanes 20 to the edges of the upper plate 42 and the lower plate 41 to form a radial arrangement structure. The lower part is fixed to the lower plate 41, and each upper part is fixed to the upper plate 42. These air guide plates 43 form a plurality of air passages 44 which are radially arranged to induce wind from the inlet 44a around the support 10 to the circumference of the vane 20.

Each air flow path 44 gradually decreases in cross-sectional area from the inlet 44a toward the vanes 20. Therefore, the wind flowing into the inlet 44a enters the vanes 20 through the air flow path 44, so that the wind speed and the pressure increase, so that the vanes 20 can be rotated with great force. In addition, each air guide plate 43, as shown in Figure 4, the end 43a of the vane side is bent in the rotation direction of the vane 20. Therefore, the wind flowing into the vanes 20 through each air channel 44 bends in the rotational direction of the vanes 20, thereby pushing the respective vanes 21 of the vanes 20, thereby Rotation effect can be enhanced.

The air guide device 40 can guide all of the wind to the vanes 20, even if the direction of the wind changes from time to time, it is possible to rotate the vanes 20 by this wind. That is, all the wind flowing into the inlet 44a of each of the air flow paths 44 disposed along the periphery may be guided to the vanes 20 to contribute to the rotation. Therefore, it is possible to generate power even if the wind direction is changed while the wind power generator is fixed.

1 and 2, the air guide device 40 may include a plurality of inlet opening and closing device 46 that can adjust the opening and closing degree of the inlet 44a of each air flow path (44). Each inlet opening and closing device 46 has a rotary shaft 46a vertically installed at the center of each inlet 44a, an opening and closing wing 46b provided at the rotary shaft 46a so as to open and close the inlet 44a by rotation, and an inlet. And a drive device 46c for rotating the rotation shaft 46a to open and close the 44a. The driving device 46c may be a motor including a speed reduction device.

Each inlet opening and closing device 46 is rotated by the drive device 46c the opening and closing member 46b can adjust the opening degree of the inlet (44a). Therefore, when the wind strength is weak, the inlet 44a may be completely opened, and when the wind strength is too high, the inflow of the inlet 44a may be adjusted to control the incoming wind to be suitable for wind power generation. In case of typhoon or heavy rain, the inlet 44a may be completely closed.

The upper portion of the air guide device 40 may be provided with a dome-shaped upper cover 50 covering the upper portion of the air guide device 40, the air through the vanes 20 around the upper cover 50 A plurality of vent holes 51 are discharged to the outside can be formed. The upper cover 50 may protect the air guide device 40 from snow and rain. In addition, a large area of the upper cover 50, as shown in Figure 3, a plurality of solar panels 60 may be installed. Therefore, the offshore wind power generator of the first embodiment can perform power generation using the solar panel 60 as well as power generation using wind.

Vent hole 51 of the upper cover 50 is required for the discharge of air, but through it snow and rain can be introduced. Therefore, a drain passage 71 may be provided in the upper plate 42 of the air guide device 40 to collect and discharge rainwater introduced into the vent hole 51.

2 and 3, the drain passage 71 may be implemented by a drain member 72 provided in a ring shape and attached to an upper surface of the upper plate 42. Water accumulated in the drain passage 71 may be discharged by the drain pipe 73 installed to extend from the drain passage 71 to the outside of the support 10. The water introduced through the vent hole 51 of the upper cover 50 reaches the drain passage 71 along the upper plate 42, and the water of the drain passage 71 can be discharged through the drain pipe 73. will be.

In addition, in the offshore wind power generator of the first embodiment, as shown in FIGS. 1 and 2, a plurality of anti-rotation plates 11 may be installed below the outer surface of the floating body 10 submerged on the water surface. The plurality of anti-rotation plates 11 may be provided in a wide flat plate shape and may extend radially from an outer surface of the support body 10. The anti-rotation plate 11 may prevent the rotation of the support body 10 even though the rotation force acts on the support body 10 due to the rotation of the vanes 20 by acting as a resistance to water while maintaining the submerged state. The rotational force of the vane 20 may cause the rotation of the support body 10 by being partially transmitted to the support body 10 through the generator 30, and the anti-rotation plate 11 acts as a resistance in the water to support the support. The rotation of the sieve 10 is prevented.

The following describes the operation of such an offshore wind turbine.

As shown in FIG. 2, the wind power generator may be fixed by the mooring device 12 in a floating state at sea. The wind of the sea may be directed toward the vanes 20 through a plurality of air flow paths 44 arranged radially, the wind introduced into the vanes 20 by rotating the vanes 20 generator 30 Can be driven to generate electricity. At this time, the wind can increase the speed and pressure due to the gradually decreasing cross-sectional area of the flow path in the process toward the vanes 20 can increase the rotational effect of the vanes 20.

Since a plurality of air flow paths 44 are radially disposed about the vanes 20 so that the inlet 44a faces in all directions, the wind paths 44 guide the winds toward vanes 20 even when the direction of the wind changes frequently. By rotating the vane 20 can be implemented. As shown in FIG. 2, the wind flowing into the vanes 20 is discharged into the space between the upper plate 42 and the upper cover 50 of the air guide device 40, and then the barrel of the upper cover 50. It is discharged to the outside through the pores 51.

If the wind is too high, the inlet opening and closing device 46 may control the wind flowing into the van vehicle 20 by adjusting the opening degree of the inlet 44a of each air passage 44, and when the typhoon blows, the inlet opening and closing The device 46 may protect the vanes 20 by completely closing the inlet 44a of each air passage 44.

In addition, the offshore wind power generator of the first embodiment can increase the power generation effect because not only the wind power generation using the wind but also the power generation using the solar panel 60 installed in the upper cover 50.

5 shows an offshore wind turbine generator according to a second embodiment of the present invention. The second embodiment is different in the shape of the inlet opening and closing device 140 for opening and closing the inlet of the plurality of air flow path (44). The remaining configuration may be provided substantially the same as the first embodiment described above.

The inlet opening and closing device 140 of the second embodiment has a cylindrical opening and closing member 141 which is installed on the outside of the inlet of the plurality of air passages 44 so as to open and close the inlet of the plurality of air passages 44, and opens and closes. An elevating device 142 for elevating and lowering the member 141 is provided. As shown in FIG. 5, the elevating device 142 may be provided at a side of the edge of the buoy 10 and may include a plurality of hydraulic cylinders for elevating the opening / closing member 141 up and down.

In the inlet opening and closing device 140, as shown in FIG. 5, the lifting device 142 raises the opening and closing member 141 to completely open the inlet of each air passage 44, and the lifting device 142 is the opening and closing member. The opening degree of each inlet 44 can be adjusted by lowering 141 to an appropriate height. In addition, when the opening and closing member 141 is lowered completely, the opening and closing member 141 can completely close the inlet of each air passage 44.

10: flotation, 11: turntable,
12: mooring device, 20: vane wheel,
30: generator, 40: air guidance device,
41: bottom plate, 42: top plate,
43: air guide plate, 44: air flow path,
46: opening and closing device, 50: upper cover,
51: ventilator, 60: solar panel,
71: Drainage flow path.

Claims (12)

Flotations that support sleep;
An impeller installed in the center of the support body;
A generator driven by the vane;
And an air guide device provided in the support body to guide the wind blowing from the circumferential side of the support body and forming a plurality of air flow paths disposed radially around the wing vehicle. The method of claim 1,
The air guide device is installed on an upper portion of the lower plate to form the plurality of air flow paths between the lower plate and the lower plate fixed to the buoys, the center is formed with a discharge port through which the wind through the vane is discharged An offshore wind turbine generator comprising a plurality of air guide plates disposed between the upper plate and the lower plate and the upper plate so as to partition between the plurality of air flow paths, and the end of the vane side bent in a rotational direction of the vane. The method of claim 2,
The support body has a bowl shape in which the height of the inner center where the generator and the vane are positioned is lower than an edge portion,
Offshore wind turbines, characterized in that the upper plate and the lower plate also has a bowl shape lower than the height of the center portion. The method of claim 2,
The air flow passage is offshore wind turbine generator, characterized in that the cross-sectional area gradually decreases toward the vane from the inlet. The method of claim 2,
An offshore wind turbine further comprising an upper cover covering an upper portion of the air guide device and having a plurality of vents for discharging air passing through the vane. The method of claim 5,
Offshore wind turbine, characterized in that the solar panel is installed on the upper surface of the upper cover. The method of claim 5,
The upper cover is provided in the form of a dome is arranged a plurality of vents around the periphery,
The top plate is an offshore wind turbine comprising a drainage passage provided on the upper surface to collect and discharge the rainwater flowing through the plurality of vents. 8. The method according to any one of claims 1 to 7,
The offshore wind turbine further comprises a plurality of anti-rotation plates extending from the outer surface of the support to prevent the rotation of the support to maintain the submerged state. 8. The method according to any one of claims 1 to 7,
Offshore wind turbine further comprises a mooring device for fixing the flotation on the sea. 8. The method according to any one of claims 1 to 7,
The air guide device further comprises an inlet opening and closing device for adjusting the opening and closing degree of the plurality of air flow path inlet. The method of claim 10,
The inlet opening and closing device is provided at the inlet of the plurality of air flow paths, respectively, a plurality of opening and closing wings supported by a rotating shaft, and offshore wind power generation apparatus including a drive device for rotating the rotating shaft of each opening and closing blades. The method of claim 10,
And the inlet opening and closing device includes a cylindrical opening and closing member installed on an outside of the plurality of air passage inlets so as to open and close the plurality of air passage inlets, and an elevating device for elevating the opening and closing member.

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