KR102034164B1 - Wind power generator of fixing on water - Google Patents

Abstract

According to the present invention, a fixing type wind power generator on water comprises: a tower of which one end is fixated to the ground on water, and the other end protrudes in an upper portion of a water surface; a nacelle rotationally coupled to an upper portion of the tower, and producing electricity by using wind power; and a floating body in which an energy storage system connected to the nacelle on an upper surface to store electricity is installed, and the tower is vertically penetrated to float on a water surface for the floating body to vertically slide along a longitudinal direction of the tower in accordance with a water level. Therefore, in accordance with a change in a water level, the floating body vertically slides along a longitudinal direction of the tower to safely support the energy storage system.

Description

Fixed Water Wind Power Generator {WIND POWER GENERATOR OF FIXING ON WATER}

The present invention relates to a fixed offshore wind turbine, and more particularly to a fixed offshore wind turbine that can stably produce electricity using wind power in the sea.

Wind power is a pollution-free energy source naturally occurring on the earth, and has been in the spotlight recently due to the global industrialization since the 20th century, as fossil fuels such as coal and oil are gradually depleted, and environmental pollution caused by the use of fossil fuels is serious.

Wind power generation is a technology that produces electricity by turning a generator with the rotational force of a wind turbine that is rotated by the force of wind. Since wind uses unlimited clean energy as a power source, it generates heat unlike conventional methods using fossil fuel or uranium. There is an advantage that does not cause problems of environmental pollution, such as thermal pollution, air pollution and radiation leakage.

Conventionally, the technology of generating power by installing support structures on land and water and installing wind turbines on the support structure has been put into practical use. There is an active research on wind power generation.

These wind power generation can be divided into fixed and floating depending on how to install the power plant in the water.

The fixed type is a method of laying foundations on the seabed, installing structures on the foundations, and then installing power generation facilities including wind turbines. Floating floats on the water surface are relatively safer than floating installations. That's the way.

In recent years, energy storage systems are being applied to onshore wind power generation to store electricity over-produced in wind turbines and supply electricity stably in the event of temporary power shortages. It is difficult to install and operate due to the influence of typhoon and storm.

Republic of Korea Patent Publication No. 10-1230082 (2013.02.05) Republic of Korea Patent Publication No. 10-1501652 (2015.03.12)

One aspect of the present invention is to provide a stationary water-based wind turbine generator that can stably support and operate the energy storage system.

Fixed water wind turbine according to an embodiment of the present invention, one end is fixed to the ground of the water phase and the other end is a tower protruding to the top of the water surface; A nacelle rotatably coupled to the top of the tower and capable of producing power using wind power; And an energy storage system that is connected to the nacelle on the upper surface to store electricity, and the tower is vertically penetrated to float on the water surface, and the floating body may slide up and down in the longitudinal direction of the tower according to the water level.

In the stationary water turbine according to an embodiment of the present invention, the tower may be formed in a multi-stage form in which a plurality of tubular members are stacked.

In the fixed water wind turbine according to an embodiment of the present invention, the floating body is formed with a through-hole through which the tower vertically penetrates, and is vertically slidable in the longitudinal direction of the tower, and is integrally installed at the bottom of the plate. May contain floats that may be injured.

Fixed water wind turbine according to an embodiment of the present invention, the guide rail is installed in the longitudinal direction of the tower on the outer circumferential surface of the tower, the outside is coupled to the through hole of the plate and the rail groove corresponding to the guide rail is formed on the inside It may further include a water level counter including a slide.

In the stationary water wind turbine according to an embodiment of the present invention, the guide rail may be installed in a plurality in a radial direction of the tower.

In the stationary water wind turbine according to an embodiment of the present invention, the guide rail may be installed in each shape.

In the stationary water wind turbine according to an embodiment of the present invention, the slide may be formed in a ring shape.

In the stationary water turbine according to an embodiment of the present invention, the rail groove of the slide may be installed in plural in a shape corresponding to the guide rail.

In the stationary water turbine according to an embodiment of the present invention, each rail groove of the slide, an insertion groove may be formed.

Fixed water wind turbine according to an embodiment of the present invention, the friction reducing unit for minimizing the contact area between the inner side of the slide and the guide rail when the plate is supported by each insertion groove of the slide vertically sliding in the longitudinal direction of the tower It may further include;

In the fixed water wind turbine according to an embodiment of the present invention, the friction reducing unit includes an elastic body inserted into each insertion groove of the slide, and a spherical body one side is elastically supported by the elastic body and the other side partially protrudes out of the insertion groove of the slide. It may include.

In the stationary water turbine according to an embodiment of the present invention, the elastic body may have a coil spring shape.

In the stationary water wind turbine according to an embodiment of the present invention, the spherical body may have a ball shape that can be rolled.

In the fixed water wind turbine according to an embodiment of the present invention, the friction reducing unit includes an elastic body inserted into each insertion groove of the slide, and an elastic protrusion one side of which is elastically supported by the elastic body and the other part of which protrudes outside the insertion groove of the slide. It may include.

In the stationary water turbine according to an embodiment of the present invention, the elastic body may have a coil spring shape.

In the fixed water wind turbine according to an embodiment of the present invention, the elastic protrusion is inserted into each insertion groove of the slide, one side is elastically supported on the elastic body, the other side of the inner projection is coupled to the center of the other side of the insertion groove of the slide It may include a protruding outer protrusions.

In the stationary water wind turbine according to an embodiment of the present invention, the other edge of the inner protrusion may be supported by an end plate in the rail groove of the slide.

In the stationary water wind turbine according to an embodiment of the present invention, the inner and outer projections may have a cylindrical shape.

In the fixed water wind turbine according to an embodiment of the present invention, the diameter of the outer protrusion may be smaller than the diameter of the inner protrusion.

In the fixed offshore wind turbine generator according to an embodiment of the present invention, at the tip of the outer protrusion, a curved surface in contact with the guide rail may be formed.

According to the embodiment of the present invention, the floating body can slide up and down in the longitudinal direction of the tower according to the change of the water level, and can safely support the energy storage system.

In addition, when the floating body is slid up and down in the longitudinal direction of the tower according to the change in the water level, it is possible to prevent the concentration of stress on one side of the tower, it is possible to minimize the friction noise.

1 is a perspective view showing a fixed water wind turbine according to an embodiment of the present invention.
FIG. 2 is an enlarged perspective view of 'A' of FIG. 1.
3 is a plan view illustrating the slide of FIG. 2.
4 is a cross-sectional view taken along the line IV-IV of FIG. 2.
5 is an enlarged cross-sectional view of 'B' of FIG. 4.
6 is a cross-sectional view illustrating another example of the friction reducing unit of FIG. 4.
7 is a perspective view illustrating the elastic protrusion of FIG. 6.

Hereinafter, with reference to the drawings will be described in detail with respect to the fixed offshore wind turbine generator according to the present invention. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, only the embodiments are to make the disclosure of the present invention complete, the scope of the invention to those skilled in the art It is provided to inform you. Like numbers refer to like elements in the figures.

In addition, throughout the specification, when a part includes a certain component, this means that it may further include other components, without excluding other components unless otherwise stated.

1 is a perspective view showing a fixed water wind turbine according to an embodiment of the present invention, Figure 2 is an enlarged perspective view of 'A' of Figure 1, Figure 3 is a plan view showing a slide of FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 2, and FIG. 5 is an enlarged cross-sectional view of 'B' of FIG. 4.

As shown in Figure 1 to 4, the fixed offshore wind turbine generator according to an embodiment of the present invention, the tower (10); Nacelle 20; Floating body 30; A water level counter 40; And a friction reducing unit 50.

Tower 10 is installed to stand at a constant height from the water surface (S) can be installed by operating the nacelle 20 on the upper side. The tower 10 is a multi-stage form in which a plurality of tubular members are stacked, one end of which is fixed to the ground (F) of the water phase, and the other end may be configured to protrude to the top of the water surface (S). At this time, since the process of embedding the tower 10 in the ground (F) is only a conventional technique, its detailed description will be omitted.

In addition, the tower 10 may be a steel material having a certain strength to support the floating body 30, a staircase, conveyor or conveying the worker or work tool for maintenance of the nacelle 20 therein An elevator can be installed further. In addition, a power line for drawing electricity generated from the nacelle 20 to the outside of the tower 10 and a communication line connected to an external central control room to remotely control and check the nacelle 20 may be installed. have.

Nacelle 20 is rotatably coupled to the top of the tower 10, it can produce power using wind power. That is, the nacelle 20 is a power generation assembly capable of producing electricity using wind power, a variable pitch angle driving device that controls the rotational speed of the rotor, a mechanical brake to reduce the rotational speed when the generator is stopped, and a horizontal axis during power generation. Gear boxes, control devices, generators, and the like, including a yawing system to control errors.

Here, the yawing system may comprise a yaw bearing, a yaw drive motor, a pinion gear and a tooth.

The tower 10 and the nacelle 20 are connected to each other via a yaw bearing, and the nacelle 20 may rotate, that is, yaw, with respect to the tower 10 by the yaw bearing. The yaw bearing has an outer ring and an inner ring, wherein the outer ring of the yaw bearing may be fixed to the tower 10, and the inner ring of the yaw bearing may be fixed to the nacelle 20. However, the present invention is not limited thereto, and the outer ring of the yaw bearing may be fixed to the nacelle 20, and the inner ring of the yaw bearing may be fixed to the tower 10.

The yaw drive motor may be fixedly coupled to one side of the nacelle 20, and a pinion gear may be coupled to a lower end of the yaw drive motor.

On the other hand, teeth are formed on the outer circumferential surface of the tower 10 in which the outer ring of the yaw bearing is fixed so that the pinion gear of the yaw drive motor can be geared to the teeth. However, the present invention is not limited thereto, and the teeth may be formed on the outer ring or the inner ring of the yaw bearing, and the pinion gear may be directly connected to the yaw bearing.

The pinion gear rotates as the yaw drive motor is driven, while the pinion gear rotates along the teeth. Therefore, when the yaw drive motor rotates, the nacelle 20 to which the yaw drive motor is coupled causes the yawing motion on the tower 10.

In addition, the floating body 30 is connected to the nacelle 20 on the upper surface is installed an energy storage system (ESS) for power storage, but the tower 10 is vertically penetrated to rise on the water surface (S), depending on the water level It is installed to be able to slide up and down in the longitudinal direction of the (10). To this end, the floating body 30 is formed with a through hole 31a through which the tower 10 vertically penetrates and is integrally formed with the plate 31 and the lower portion of the plate 31 which can slide up and down in the longitudinal direction of the tower 10. It may include a float 32 that can be installed to rise on the water surface (S).

Plate 31 may be formed in a pair in a square shape, it may be coupled to each other to face the tower 10 by a known fastening means. Semi-circular grooves (not shown) are formed in the coupling portion of each plate 31 to form a circular through hole 31a at the time of coupling.

The float 32 is formed in a cylindrical structure having a buoyancy space therein so as to be able to float on the water, and if the buoyancy has a property of buoyancy, any form is not limited to a specific shape.

At this time, the energy storage system (ESS) is preferably installed to be sealed by an outer case (not shown) to be waterproof.

On the other hand, the water level counter 40 is provided so that the floating body 30 is not rotated with respect to the tower 10 in accordance with the change in the water level. To this end, the water level counter 40 is a guide rail 41 installed in the longitudinal direction of the tower 10 on the outer circumferential surface of the tower 10, as shown in Figures 2 and 3, the outer plate 31 The slide 42 may be coupled to the through hole 31a of the rail groove 42a and the rail groove 42a corresponding to the guide rail 41 is formed therein.

The guide rails 41 may be installed in plural in the radial direction of the tower 10 and may be installed in respective shapes.

In addition, the slide 42 is formed in a ring shape, the bolt (V) is coupled to the plate 31, the rail groove 42a of the slide 42 may be installed in plurality in a shape corresponding to the guide rail 41. have. However, the rail groove 42a and the guide rail 41 of the slide 42 may be installed by changing their positions. That is, the rail groove 42a of the slide 42 is installed long in the longitudinal direction of the tower 10, and the guide rails 41 may be installed on the slide 42 in a projection shape to correspond to each other.

As shown in FIG. 5, each of the rail grooves 42a of the slide 42 may include an insertion groove 42b to accommodate the friction reducing unit 50.

In addition, the friction reducing unit 50 is supported by each of the insertion grooves 42b of the slide 42 so that when the plate 31 slides up and down in the longitudinal direction of the tower 10, the inner side of the slide 42 and the guide rail ( Minimizing the friction noise by minimizing the contact area of 41, it is possible to prevent the concentration of stress on one side of the tower 10 by elastically supporting the plate (31). For example, as shown in FIG. 4, the friction reducing part 50 includes an elastic body 51 inserted into each insertion groove 42b of the slide 42, one side of which is elastically supported by the elastic body 51, and the other side of the slide is slided. The insertion groove 42b of the 42 may include a spherical body 52 which partially protrudes.

The elastic body 51 has a coil spring shape, and the spherical body 52 has a ball shape that can be rolled along the plate surface of the guide rail 41 when the plate 31 slides up and down in the longitudinal direction of the tower 10. 5, the end plate 55 may be supported by the rail groove 42a of the slide 42 to prevent the rail groove 42a from being separated from the rail groove 42a.

Hereinafter, another example of the friction reducing unit 50 will be described with reference to FIGS. 6 and 7.

6 is a cross-sectional view illustrating another example of the friction reducing unit of FIG. 4, and FIG. 7 is a perspective view illustrating the elastic protrusion of FIG. 6.

As described above, the water level counter 40 is provided so that the floating body 30 can be supported by the tower 10 according to the change of the water level. To this end, the water level counter 40 has a guide rail 41 installed in the longitudinal direction of the tower 10 on the outer circumferential surface of the tower 10, and an outer side thereof is coupled to the through hole 31a of the plate 31, The guide rail 41 may include a slide 42 having a rail groove 42a corresponding to the guide rail 41.

The guide rails 41 may be installed in plural in the radial direction of the tower 10 and may be installed in respective shapes.

In addition, the slide 42 is formed in a ring shape, the bolt (V) is coupled to the plate 31, the rail groove 42a may be provided in plurality in a shape corresponding to the guide rail (41). However, the rail groove 42a and the guide rail 41 may be installed by changing their positions. That is, the rail groove 42a is installed long in the longitudinal direction of the tower 10, and the guide rail 41 may be installed in the projection shape on the slide 42 to correspond to each other.

Insertion grooves 42b are formed in each rail groove 42a of the slide 42 to accommodate the friction reducing unit 50.

Meanwhile, as shown in FIGS. 6 and 7, the friction reducing unit 50 of another example includes an elastic body 51 inserted into each insertion groove 42b of the slide 42, and one side of the friction reducing unit 50 is elastic to the elastic body 51. The other side may include an elastic protrusion 53 which protrudes outwardly from the insertion groove 42b of the slide 42.

The elastic body 51 may be formed in a coil spring shape, as long as it can support the elastic protrusion 53, any shape is not limited to a specific shape.

The elastic protrusion 53 is inserted into each of the insertion grooves 42b of the slide 42 so that one side thereof is elastically supported by the elastic body 51 and the center of the other side of the inner protrusion 53-1. It may be coupled to include an outer projection (53-2) that is partially protruded to the outside of the insertion groove (42b) of the slide 42.

The other edge of the inner protrusion 53-1 is supported by the end plate 55 in the rail groove 42a of the slide 42 to prevent the rail groove 42a from being separated.

The inner protrusion 53-1 and the outer protrusion 53-2 have a cylindrical shape, and the diameter of the outer protrusion 53-2 is preferably smaller than the diameter of the inner protrusion 53-1.

A curved surface 53-2a contacting the guide rail 41 is formed at the tip of the outer protrusion 53-2 to minimize the contact area with the guide rail 41.

Hereinafter, with reference to Figure 1 looks at the action of the fixed water wind turbine of the present invention described above.

In the case of the sea, the water level is large and frequently occurs due to the influence of typhoons and storms. As a result, the surface S swings, and the floating body 30 includes a slide 42 having a rail groove 42a formed in the through hole 31a of the center portion, and is provided in the longitudinal direction of the tower 10. By sliding up and down along the rail 41, it is possible to cope with the change in the water level in an always floating state.

At this time, the plate 31 of the floating body 30 does not horizontally slide up and down, has a constant inclination, and slides up and down in the longitudinal direction of the tower 10.

Accordingly, the friction reducing unit 50 is installed in the radial direction of the slide 42 to elastically support the plate 31 and is installed to minimize the contact area of the slide 42 to the tower 10 is floating body 30 When the plate 31 flows, the stress can be evenly distributed to the circumferential surface of the tower 10, and frictional noise can be suppressed and the slide 42 can be prevented from being damaged.

According to the fixed water wind power generator of the present invention as described above, the floating body can slide up and down in the longitudinal direction of the tower in accordance with the change in the water level can safely support the energy storage system.

In addition, when the floating body is slid up and down in the longitudinal direction of the tower according to the change in the water level, it is possible to prevent the concentration of stress on one side of the tower, it is possible to minimize the friction noise.

The embodiments and drawings attached to this specification are merely to clearly show some of the technical ideas included in the present invention, and those skilled in the art can easily infer within the scope of the technical ideas included in the specification and drawings of the present invention. Various modifications and specific embodiments that can be made will be apparent to be included in the scope of the invention.

10: tower
20: nacelle
30: floating body
31: Plate
32: float
40: water level counterpart
41: guide rail
42: slide
42a: rail groove
42b: Insertion groove
50: friction reducing portion
51: elastomer
52: sphere
53: elastic protrusion
ESS: Energy Storage System
F: ground
S: sleep

Claims (20)

A tower having one end fixed to the ground of the water phase and the other end protruding to the top of the water surface;
A nacelle rotatably coupled to an upper portion of the tower and capable of producing electric power using wind power; And
An energy storage system connected to the nacelle and configured to accumulate on an upper surface thereof, wherein the tower is vertically penetrated and floated on the water surface, and the floating body may slide up and down in the longitudinal direction of the tower according to the water level;
Including,
The floating body,
A through hole through which the tower vertically penetrates and is capable of vertically sliding in the longitudinal direction of the tower;
It is integrally installed in the lower portion of the plate includes a float that can be floated on the water surface,
A water level counter including a guide rail installed in the longitudinal direction of the tower on an outer circumferential surface of the tower and a slide having an outer side coupled to a through hole of the plate and a rail groove corresponding to the guide rail formed therein; and,
Insertion groove is formed in the rail groove of the slide,
And a friction reducing part configured to be supported by the insertion groove of the slide to minimize the contact area between the inside of the slide and the guide rail when the plate slides up and down in the longitudinal direction of the tower. The method of claim 1,
The tower,
Fixed offshore wind turbine is formed in a multi-stage form of a plurality of tubular members stacked. delete delete The method of claim 1,
The guide rail,
Fixed water wind turbine is installed in a plurality in the radial direction of the tower. The method of claim 5,
The guide rail,
Fixed water wind turbines installed in each shape. The method of claim 6,
The slide,
Fixed water wind turbines are formed in a ring shape. The method of claim 7, wherein
The rail groove of the slide,
Fixed water wind turbine is installed in plurality in a shape corresponding to the guide rail. delete delete The method of claim 1,
The friction reducing unit,
An elastic body inserted into each insertion groove of the slide;
One side is elastically supported by the elastic body and the other side is a fixed offshore wind turbine comprising a spherical body that partially protrudes to the outside of the insertion groove of the slide. The method of claim 11,
The elastic body,
Fixed water wind turbine with coil spring shape. The method of claim 11,
The spherical body,
Fixed offshore wind turbine with ball-shaped ball shape. The method of claim 1,
The friction reducing unit,
An elastic body inserted into each insertion groove of the slide;
One side is elastically supported by the elastic body and the other side of the fixed offshore wind turbine generator comprising an elastic protrusion which partially protrudes to the outside of the insertion groove of the slide.
Fixed water wind turbines, characterized in that. The method of claim 14,
The elastic body,
Fixed water wind turbine with coil spring shape. The method of claim 14,
The elastic protrusions,
An inner protrusion inserted into each insertion groove of the slide and one side elastically supported by the elastic body;
Fixed offshore wind turbine generator comprising an outer projection coupled to the center of the other side of the inner projection is a part of the projection protruding outside the insertion groove of the slide. The method of claim 16,
The other edge of the inner protrusion is
Fixed offshore wind turbine is supported by the end plate in the rail groove of the slide. The method of claim 16,
The inner protrusions and the outer protrusions,
Fixed water wind turbine with cylindrical shape. The method of claim 18,
The diameter of the outer protrusions,
Fixed offshore wind turbine generator smaller than the diameter of the inner projection. The method of claim 16,
At the tip of the outer protrusion,
Fixed offshore wind turbine is formed in contact with the guide rail surface.

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