KR102441484B1 - Floating offshore structure for floating wind generator to facilitate posture stability - Google Patents

Abstract

A floating body for a floating wind generator to facilitate posture stabilization according to the present invention, as a floating body floating and supporting a tower unit in a floating wind generator having the tower unit and a generating unit for producing electricity by blades at the upper side of the tower unit, includes a supporting unit extending in a vertical direction and coupled with the tower unit at the top, and a weight center unit coupled to the lower side of the supporting unit and accommodating a weight body which moves to hold the center of weight by inertia when the tower unit shakes.

Description

Floating offshore structure for floating wind generator to facilitate posture stability

The present invention relates to a floating body for a floating wind power generator with easy posture stability, and in particular, when the floating wind power generator floating in the sea performs a tilting motion with respect to the water surface, the posture of the floating wind generator can be quickly and easily changed. It relates to a floating body for a floating wind power generator that is easily stabilized and stabilized by correcting it.

Recently, research and development of alternative energy to replace thermal power generation or nuclear power generation is increasing, and in particular, the development of a power generation device capable of generating power at sea using a structure floating in the sea is one of them. A floating wind turbine is a typical example. Since the floating wind power generator maintains a floating state on the sea, it is inclined to the water surface by wind or wave height and repeats the change of posture of being erected vertically again.

Conventional offshore floating wind power generator maintains a floating state by a floating body, which is made of steel, filled with seawater therein, and adjusted the flow rate of the seawater using a pump to induce posture stabilization. This method uses a similar action or principle to that of a ship's ballast tank.

However, this conventional method has a disadvantage in that the reaction speed is slowed down because the flow rate of seawater inside the floating body is adjusted to restore the posture of the floating wind turbine, and the material of the floating body is made of steel. Therefore, a considerable amount of steel is required to support the floating wind turbine, resulting in an increase in cost. In addition, since the floating body is directly exposed to a corrosive environment caused by seawater, there is a problem in that the maintenance cost is also increased.

Accordingly, when the floating wind power generator is inclined with respect to the water surface, there is a demand for a floating body capable of quickly stabilizing the posture and enabling cost reduction.

The present invention has been devised to solve the above needs, and when the floating wind turbine floating in the sea is inclined to the water surface, the posture of the floating wind turbine is quickly and easily corrected and stabilized An object of the present invention is to provide a floating body for a floating wind power generator that is easy to stabilize and stabilize the posture.

Floating body for a floating wind power generator with easy posture stability according to an embodiment of the present invention, in a floating wind power generator having a tower part and a power generation part for generating electric power by a blade on the upper part of the tower part, by floating the tower part A floating body for supporting, comprising: a support part extending in a vertical direction and coupled to an upper portion of the tower part; It is characterized in that it comprises a; it is coupled to the lower side of the support, the center of gravity to accommodate the weight body that moves to catch the center of gravity by inertia when the tower part is shaken therein.

In addition, the center of gravity portion, it is preferable to include a round portion formed so that the diameter gradually increases from the support portion downward, and a receiving portion having a space in which the weight is mounted in the lower portion of the round portion.

In addition, the center of gravity portion, the first guide portion installed on the bottom of the center of gravity portion having a first guide rail extending in a first direction; and a sliding guide part having a second guide rail extending in a second direction perpendicular to the first direction, and a second guide part having a first coupling part slidably coupled to the first guide rail; It is preferable that the weight body is slidable along the second guide rail of the second guide part, and the second guide part is slidable in the first direction and the second direction by moving along the first guide rail of the first guide part. .

In addition, one end is connected to the support, the other end of the first connecting member is fixed to the anchor fixed to the bottom of the sea; and a second connecting member having one end connected to the center of gravity and the other end fixed to the anchor.

In addition, it is preferable that a corrosion preventing portion having a predetermined height in the vertical direction from the point in contact with the sea level is provided around the support portion.

In addition, it is preferable that the support part and the center of gravity are integrally formed of a concrete material.

In addition, first stoppers are respectively provided on the first guide part adjacent to both ends of the first guide rail to regulate the movement of the second guide part, and the second guide part to regulate the movement of the weight. , It is preferable that second stoppers are provided adjacent to both ends of the second guide rail, respectively.

The peak load power generation facility using a closed ship according to the present invention is capable of stabilizing the posture of the floating wind power generator by quickly and easily correcting the posture of the floating wind power generator when the floating wind power generator floating in the sea makes a tilting motion with respect to the water surface. provides an effect.

In addition, the floating body is formed of a concrete material, it is possible to reduce costs compared to steel materials, and provides an excellent effect of corrosion resistance.

In addition, since the floating body is provided with a round part whose diameter is gradually reduced from the lower side to the upper side, it reduces the influence of the wave height below the water surface and provides the effect of minimizing the inclination of the floating wind power generator.

In addition, the floating body provides an effect of minimizing corrosion by seawater by providing an anticorrosion part having a predetermined height in an area in contact with the sea level.

1 is a cross-sectional view of a floating wind power generator in a state in which it is floated by a floating body according to an embodiment of the present invention;
Figure 2 is a view showing an extract of the main part of Figure 1;
3 is a view showing a sliding guide unit;
4 is a view showing a first guide part of the sliding guide part;
5 is a view showing a second guide part of the sliding guide part;
6 is a view showing the weight of the sliding guide part;
7 and 8 are views schematically showing the movement of the weight according to the inclination of the floating wind turbine.

Hereinafter, various embodiments of the present invention will be described in connection with the accompanying drawings. Various embodiments of the present invention can be made various changes and can have various embodiments, specific embodiments are illustrated in the drawings and the related detailed description is described. However, this is not intended to limit the various embodiments of the present invention to specific embodiments, and should be understood to include all changes and/or equivalents or substitutes included in the spirit and scope of various embodiments of the present invention. In connection with the description of the drawings, like reference numerals have been used for like components.

Expressions such as “comprises” or “may include” that may be used in various embodiments of the present invention indicate the existence of a corresponding disclosed function, operation, or component, and may include one or more additional functions, operations, or components, etc. are not limited. In addition, in various embodiments of the present invention, terms such as "comprise" or "have" are intended to designate that a feature, number, step, action, component, part, or combination thereof described in the specification is present, It should be understood that it does not preclude the possibility of addition or existence of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

When a component is referred to as being “connected” to another component, the component may be directly connected to the other component, but a new component is formed between the component and the other component. It should be understood that there may be On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it will be understood that no new element exists between the element and the other element. should be able to

Terms used in various embodiments of the present invention are only used to describe a specific embodiment, and are not intended to limit various embodiments of the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which various embodiments of the present invention pertain.

Terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings in the context of the related art, and unless explicitly defined in various embodiments of the present invention, ideal or excessively formal terms not interpreted as meaning

1 is a cross-sectional view of a floating wind power generator floating by a floating body according to an embodiment of the present invention, and FIG. 2 is a view showing the main part of FIG. 1 extracted. 3 is a view showing a sliding guide unit. FIG. 4 is a view showing a first guide part of the sliding guide part, FIG. 5 is a view showing a second guide part of the sliding guide part, and FIG. 6 is a view showing a weight of the sliding guide part. 7 and 8 are views schematically showing the movement of the weight according to the inclination of the floating wind turbine.

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

Referring to FIG. 1 , a floating body for a floating wind power generator with easy posture stability according to an embodiment of the present invention relates to a floating body supporting the floating wind power generator 3 by floating. The floating wind power generator 3 is a power generation device having a tower unit 1 and a power generation unit 6 having a blade 2 installed thereon to produce electric power, and the present invention provides the floating wind power generator ( 3) relates to a floating body that is supported by floating in the sea. The floating body for a floating wind power generator with easy posture stability according to an embodiment of the present invention includes a support portion 10 and a center of gravity portion 20 .

The support part 10 is formed in a column shape extending in the vertical direction, and the tower part 1 is coupled to the upper part thereof. A worker platform 4 for inspection and repair of the tower part 1 is formed on the upper side of the support part 10 .

The center of gravity portion 20 is coupled to the lower side of the support portion 10, and a weight body 40 that moves to hold the center of gravity by inertia when the tower portion 1 is shaken is accommodated therein. The operator can access the center of gravity 20 by using the ladder 5 installed from the upper side of the support 10 to the center of gravity 20 .

According to the present embodiment, the center of gravity portion 20 includes a round portion 21 and a receiving portion 22 .

The round part 21 is formed to gradually increase in diameter as it goes downward from the support part 10 . As shown in FIG. 2, the outer peripheral surface of the round part 21 is rounded toward the lower side to form a curved surface.

The accommodating part 22 provides a space in which the weight body 40 is mounted under the round part 21 . The accommodating part 22 includes a side wall part 221 extending vertically downward from the lower end of the round part 21, and a lower wall part coupled to the lower end of the side part to form a bottom of the accommodating part 22 ( 222). According to the present embodiment, a sliding guide part 30 for slidably supporting the weight body 40 is provided inside the receiving part 22 of the center of gravity part 20 .

According to this embodiment, the support 10 and the center of gravity 20 are integrally formed of a concrete material. The support 10 and the center of gravity 20 are formed to have a predetermined thickness, and an empty space is provided therein to function as a floating body. In this embodiment, since the support portion 10 and the center of gravity 20 are formed of a concrete material, the cost is reduced compared to using a conventional steel material, and corrosion resistance by seawater is improved.

Referring to FIG. 3 , the sliding guide part 30 includes a first guide part 31 and a second guide part 32 .

The first guide part 31 is installed on the bottom of the center of gravity part 20 . According to this embodiment, as shown in Fig. 4, the first guide part 31 is made of a frame having a substantially square shape, and the inner side of the first guide part 31 is a reinforcing frame for reinforcing rigidity ( 314) is provided. A first guide rail 311 extending in a first direction is provided on an upper surface of the first guide part 31 . A pair of the first guide rails 311 are arranged in parallel to face each other.

In addition, a first stopper 312 for regulating the movement of the second guide part 32 is provided on the first guide part 31 . The first stopper 312 is provided on the edge side of the first guide part 31 . The first stoppers 312 are respectively provided adjacent to both ends of the first guide rail 311 . A first buffer member 313 for absorbing an impact when the second guide 32 collides is coupled to the first stopper 312 . The first buffer member 313 may be a spring or a rubber member.

5, the second guide part 32 is provided with a second guide rail 321 extending in a second direction perpendicular to the first direction. A pair of the second guide rails 321 are arranged in parallel to face each other. In addition, a first coupling part 322 slidably coupled to the first guide rail 311 is formed below the second guide part 32 . According to the present embodiment, the second guide part 32 is formed in a substantially square shape like the first guide part 31 . The first coupling part 322 is protruded to be inserted into the first guide rail 311 under the second guide part 32 . A first coupling groove 3221 into which the first guide rail 311 is inserted is formed in the first coupling part 322 .

In addition, a second stopper 323 for regulating the movement of the weight 40 is provided on the second guide 32 . The second stopper 323 is provided on the edge of the second guide part 32 . The second stoppers 323 are provided adjacent to both ends of the second guide rail 321 , respectively. A second buffer member 324 for absorbing an impact when the weight body 40 collides is coupled to the second stopper 323 . The second buffer member 324 may be a spring or a rubber member similar to the first buffer member 313 .

According to this embodiment, four of the first coupling parts 322 protrude from the lower side of the second guide part 32 . Of course, the shape of the first coupling part 322 is not limited thereto, and the second guide part 32 can slide along the first guide rail 311 of the first guide part 31 . It can be variously changed if it can be combined to do so.

As shown in FIG. 6 , the weight body 40 is slidably coupled to the upper side of the second guide part 32 along the second guide rail 321 . Accordingly, the weight body 40 is movable along the second guide rail 321 in the second direction. In addition, since the second guide part 32 to which the weight body 40 is coupled is movable along the first guide rail 311 of the first guide part 31 , the second guide part 32 . is movable in the first direction along the first guide rail 311 . As a result, the weight body 40 is slidable in the first direction and the second direction.

A second coupling part 41 slidably coupled to the second guide rail 321 of the second guide part 32 is formed below the weight body 40 . A second coupling groove 411 into which the second guide rail 321 is inserted is formed in the second coupling part 41 . Four of the second coupling portions 41 are provided, and two are respectively coupled to the second guide rails 321 facing each other.

The weight body 40, when the floating wind power generator 3 is inclined with respect to the water surface, the first direction and/or in a direction that resists the direction in which the wind power generator 3 moves by its inertia slide in the second direction. Since the weight body 40 moves in a direction opposite to the direction in which the wind power generator 3 is inclined, it is possible to quickly restore the inclined posture of the wind power generator 3 .

In addition, according to this embodiment, it includes a first connection member 51 , a second connection member 52 , a corrosion protection unit 60 , and an eyepiece facility 70 .

The first connecting member 51, one end is connected to the support 10, the other end is fixed to the anchor 80 fixed to the seabed. The second connecting member 52 has one end connected to the center of gravity 20 and the other end fixed to the anchor 80 . One end of the first connecting member 51 connected to the support 10 is higher than one end of the second connecting member 52 connected to the center of gravity 20 , and the first connection The other end of the member 51 and the other end of the second connecting member 52 are connected together to the same anchor 80 . Therefore, since the first connecting member 51 and the second connecting member 52 are connected at different heights with respect to the floating body, the floating wind power generator 3 can be inclined within a predetermined range, and the It can be effectively controlled not to incline beyond the range.

The anti-corrosion part 60 is provided around the support part 10 . The anti-corrosion part 60 is formed to have a predetermined height in the vertical direction from the point where the support part 10 comes into contact with the sea level. The anti-corrosion part 60 may be formed in a form in which a painting layer or a coating layer of a corrosion-resistant material or a protective layer made of carbon fiber is wrapped in the circumferential direction of the support part 10 .

The berthing facility 70 is provided for berthing of the vessel on the support 10 exposed upward from the sea level. The operator can access the support 10 by the berthing facility 70, and the berthing facility 70 includes a structure in which the operator can move up to the upper side of the support 10.

Hereinafter, the operation of the floating body for the floating wind power generation according to the above configuration will be described in detail.

The wind power generator 3 floating on the sea continuously oscillates by vibration, wind, and wave height caused by the rotation of the blade 2 , and the wind power generator 3 is inclined with respect to the sea level by these fluctuations. For efficient and stable power generation, the wind power generator 3 must again overcome the slope and be restored to its original position.

7 and 8, when the floating wind power generator 3 moves in a positive direction with respect to the X-axis and is inclined, a weight disposed in the receiving part 22 of the center of gravity 20 (40) moves in the opposite direction to the movement of the floating wind power generator (3) by inertia. That is, the weight 40 moves in the negative direction with respect to the X axis to restore the inclination in the X axis direction.

And, when the floating wind power generator 3 moves in the positive direction with respect to the Y-axis and is inclined, the weight 40 disposed in the receiving part 22 of the center of gravity 20 is inertial to the floating type. The wind generator 3 moves in the opposite direction to the movement. That is, the weight 40 is moved in the negative direction with respect to the Y-axis to restore the inclination in the Y-axis direction.

According to an embodiment of the present invention, the weight body 40 moves in the second direction on the second guide part 32 , and the second guide part 32 is a first guide of the first guide part 31 . It moves along the rail 311 in the first direction. Since the first and second directions are perpendicular to each other, the weight body 40 moves in either one of the first and second directions, or simultaneously moves in a direction in which the first and second directions are combined. can That is, since the first guide rail 311 and the second guide rail 321 can move to any point on a two-dimensional plane, a fast reaction speed no matter which direction the floating wind power generator 3 is tilted This allows you to easily restore your posture.

In addition, according to the embodiment of the present invention, the floating body is formed of a concrete material, so that it has strong corrosion resistance, and provides an effect of reducing costs compared to manufacturing it using a steel material.

In addition, according to the embodiment of the present invention, the center of gravity 20 is provided with a round portion 21 to minimize the inclination of the wind power generator 3 by the current. The influence of the algae can be minimized by allowing the algae to pass through the round part 21 in a streamlined shape and to have a narrower diameter toward the upper side. In addition, according to the embodiment of the present invention, the first and second connection members are used together to provide an effect of preventing excessive inclination of the floating wind power generator 3 .

Above, the present invention has been described in detail with respect to preferred embodiments, but the present invention is not limited to the above embodiments, and various modifications may be provided without departing from the scope of the present invention.

10... Support 20... Center of gravity
21... Round part 22... Receiving part
221... side wall 222... lower wall
30... Sliding guide part 31... First guide part
311... First guide rail 312... First stopper
313... First buffer member 314... Reinforcement frame
32... Second guide part 321... Second guide rail
322... First coupling part 3221... First coupling groove
323... Second stopper 324... Second buffer member
40... weight 41... second coupling part
411... Second defective groove 51.... First connecting member
52... Second connecting member 60... Corrosion prevention part
70... berth 80... anchor
100... Floating body 1... Tower part
2... Blades 3... Floating wind turbines
4... worker platform 5... ladder
6... power generation department

Claims (7)

In a floating wind power generator 3 having a tower unit 1 and a power generation unit 6 that generates electric power by a blade 2 on an upper portion of the tower unit 1, the tower unit 1 is floated by In the floating body to support,
a support portion 10 extending in the vertical direction and coupled to the upper portion of the tower portion 1;
It is coupled to the lower side of the support portion 10, and the center of gravity portion 20 accommodates the weight body 40 that moves to catch the center of gravity by inertia when the tower portion 1 is shaken therein;
The center of gravity 20,
a first guide part 31 installed on the bottom of the center of gravity 20 and having a first guide rail 311 extending in a first direction; and
A second guide part having a second guide rail 321 extending in a second direction perpendicular to the first direction, and a first coupling part 322 slidably coupled to the first guide rail 311 ( 32); including a sliding guide part 30 having;
The weight body 40 is slidable along the second guide rail 321 of the second guide part 32 , and the second guide part 32 is a first part of the first guide part 31 . A floating body for a floating wind power generator with easy posture stability, characterized in that it can slide in the first direction and the second direction by moving along the guide rail (311). According to claim 1,
The center of gravity portion 20 includes a round portion 21 that is formed to gradually increase in diameter as it goes downward from the support portion 10 , and the weight body 40 is mounted on a lower portion of the round portion 21 . Floating body for easy posture stabilization, characterized in that it comprises a receiving portion 22 having a space to be. delete According to claim 1,
a first connecting member 51 having one end connected to the support unit 10 and the other end fixed to an anchor 80 fixed to the seabed; and
One end is connected to the center of gravity (20), the other end is a second connecting member (52) fixed to the anchor (80); . According to claim 1,
Floating body for easy posture stabilization, characterized in that a corrosion-preventing part 60 having a predetermined height in the vertical direction from the point in contact with the sea level is provided around the support part 10. According to claim 1,
The support portion 10 and the center of gravity portion 20 is a floating body for easy posture stability, characterized in that formed integrally with a concrete material. According to claim 1,
A first stopper 312 is provided on the first guide part 31 adjacent to both ends of the first guide rail 311 to regulate the movement of the second guide part 32, respectively,
Posture stability, characterized in that the second guide part 32 is provided with second stoppers 323 adjacent to both ends of the second guide rail 321 to regulate the movement of the weight body 40, respectively. Floating body for easy floating wind power generator.

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