KR20140052353A - Floating wind power generation with passive underwater heaving and rolling/pitching damper, passive heaving and rolling/pitching damper for floating wind power generation - Google Patents

Abstract

The present invention relates to a floating type wind power generator with a manual underwater heaving and rolling/pitching damping device and the manual underwater heaving and rolling/pitching damping device for the floating type wind power generator and, more specifically, to a floating type wind power generator with a manual underwater heaving and rolling/pitching damping device and the manual underwater heaving and rolling/pitching damping device for the floating type wind power generator which stably floats the floating type wind power generator installed in the sea. Especially, the present invention can damp heaving or rolling/pitching generated on the floating type wind power generator by wind or waves by using the manual damping device generating power against the movement of the floating type wind power generator. Furthermore, the present invention can be installed not only on a new power generating facility, but also on an existing wind power generating facility and can be manufactured into various shapes according the shape of a floating structure of the floating type wind power generator, thereby minimizing the limitations on the installation of the floating type wind power generator. Therefore, the present invention can improve the stability, reliability, and competitiveness of the structure in a pollution-free power generation field, especially, in a marine wind power generation field.

Description

TECHNICAL FIELD [0001] The present invention relates to a floating type wind power generator provided with a passive up-and-down rocking and rotation-type vibration damping device installed in water, and a passive type vertical vibration and rotary vibration damping device for a floating wind power generator and rolling / pitching damper for floating wind power generation}

The present invention relates to a floating type wind power generator equipped with a passive up-and-down rocking and rotary-type vibration damping device installed in water, and a passive type up-and-down rocking and rotary-type vibration damping device for a floating wind power generator. More particularly, The wind turbine generator can be stably floated.

In particular, the present invention relates to a method and system for controlling a wind turbine using a passive damping device that generates a force against the movement of a floating wind turbine, The present invention relates to a floating type wind power generator and a passive type up-down and down-rotation type damping device for a floating wind power generator equipped with a passive up-and-down rocking and rotary-type damping device installed in water.

In recent years, not only are fossil fuels becoming increasingly exhausted, but also environmental pollution caused by the use of fossil fuels has become serious, and thus, there is an increasing tendency to use non-polluting alternative energy.

Wind power generation, which is one of the power generation methods using pollution-free alternative energy, is a technology that generates electricity by rotating the generator with the rotational force of a rotating wing by the force of wind. And offshore wind turbines installed.

On the other hand, in order to generate sufficient electric power using wind power, a large-area site is required, and in the case of onshore wind power generation, it may be difficult to secure sufficient site.

In addition, the terrestrial wind power generation is also affected by the terrain, so the area where the power generation facilities can be built is limited.

As a technology capable of solving such problems of onshore wind power generation, offshore wind power generation technology is available.

Offshore wind power generation is a fixed type and floating type according to the installation method of wind power generation equipment, and a fixed type is a method of constructing a foundation structure on the underside where the water depth is not deep and installing power generation facilities thereon. Floating type is installed on the sea surface And installing power generation facilities thereon.

Such fixed offshore wind power generation is advantageous in that it is not limited by the scale of the installation or the geographical influence, but it is difficult to construct a foundation structure by underwater construction.

In addition, fixed-type offshore wind turbines are equipped with power generation facilities on the shore adjacent to the coast. As such coastal shallow water is used as a fishing ground, there are not many areas where power generation facilities can be installed.

On the other hand, floating offshore wind turbines have the highest degree of freedom in terms of local constraints on the installation of power generation facilities, as they require no additional foundation and can be installed in remote areas offshore.

However, in the case of floating offshore wind power generation, since the power generation facility is floated on the sea, a strong wind such as a typhoon blowing or a high wave may cause a problem in the safety of the entire structure.

In order to solve these problems, Korean Patent Laid-Open Publication No. 10-2009-0028972 entitled " Maritime floating wind power generation device having a wide dispersed floating structure "and Korean Patent Publication No. 10-2012-0021238" Equipped with a marine floating wind power generator ".

However, in order to improve the safety of the floating power generation facility, a large-scale structure must be added to the conventional technology, which makes installation difficult.

In addition, in addition to the large size of the structure to be added and the difficulty in installation, in the case of existing power generation facilities, work for installing additional structures is required. In the case where such a work is difficult, There is a difficulty to be replaced with.

Korean Patent Publication No. 10-2009-0028972 "Maritime floating wind power generation device having a wide dispersed floating structure" Korean Patent Laid-Open Publication No. 10-2012-0021238 "Maritime floating wind power generation device having floating support line compression structure"

In order to solve the above-mentioned problems, the present invention provides a floating type wind power generator and a floating wind power generator having a passive up-and-down rocking and rotary-motion damping device installed in water, And an object of the present invention is to provide a passive up-and-down rocking and rotary-motion damping device.

Particularly, the present invention relates to a passive up-and-down rocking device installed in water capable of attenuating up-and-down motions or rolling motions (rolling and pitching) generated in a floating wind power generator by waves or wind And a passive type up-and-down rocking and rotary-type rocking-attenuator for a floating wind power generator.

It is another object of the present invention to provide a passive up-and-down rocking and rotary-motion damping device for a floating wind power generator which can be installed not only in a newly installed power generation facility but also in existing power generation facilities.

In order to achieve the above object, a floating type wind turbine equipped with a passive up-and-down rocking and rotary-motion damping device installed in water according to the present invention includes: a floating structure suspended on a water surface; A wind power generator configured on an upper portion of the floating structure; The passive up-and-down rocking and rotation-movement damping device includes an inner frame formed to correspond to an outer surface of the floating structure; An outer frame spaced apart from the inner frame, the outer frame being formed such that the spacing distance is gradually increased along the upper and lower directions from the center; And at least two partition walls connecting the inner frame and the outer frame and partitioning the space formed by the inner frame and the outer frame into at least two spaces.

The outer frame may include an upper damping portion, a lower damping portion, and an attenuation connection portion. The upper damping portion may be formed such that a distance from the upper portion of the inner frame gradually increases in an upward direction, The distance between the inner frame and the lower frame is gradually increased in the lower direction so that the lower portion of the upper damping portion and the upper portion of the lower damping portion extend spatially while maintaining a constant distance from the inner frame. .

In addition, the barrier ribs may be installed in at least one pair of positions symmetrical to each other with respect to the center of the floating structure.

The present invention also provides a passive up-and-down rocking and rotary-motion damping device for a floating wind power generator, comprising: a first inner frame formed to correspond to at least a part of outer surfaces of the floating structure; A first fixing part including a first outer frame and a first coupling part on one side; And a second outer frame formed so as to correspond to at least another portion of the outer surface of the floating structure included in the floating wind power generator, and a second outer frame spaced from the second inner frame, Wherein the first and second outer frames are spaced apart from the first and second inner frames by a distance from the center to the upper and lower sides, As shown in FIG.

The present invention also provides a passive up-and-down rocking and rotary-motion damping device for a floating wind power generator, comprising: a first inner frame formed to correspond to at least a part of outer surfaces of the floating structure; A first fixing part including a first outer frame, a first fixing part having a first coupling part on one side and a third coupling part on the other side; And a second outer frame formed so as to correspond to at least another portion of the outer surface of the floating structure included in the floating wind power generator, and a second outer frame spaced from the second inner frame, And a second fixing part having a second coupling part to be coupled to the first coupling part and a fourth coupling part to be coupled to the third coupling part on the other side, , The distance between the first inner frame and the second inner frame is gradually increased along the upper and lower directions from the center.

In addition, in a state where the first fixing part and the second fixing part are closely fixed to the floating structure, at least one pair of partitions may be provided at positions symmetrical with respect to the center of the floating structure.

In addition, the passive up-and-down rocking and rotary-motion damping device for a floating wind power generator according to the present invention includes: a fixed frame formed to correspond to an outer surface of a floating structure; And at least one pair of damping tubes symmetrical to each other with respect to the center of the floating structure on the outer surface of the fixed frame, wherein the damping tube passes through in the longitudinal direction, So that the space portion is gradually increased.

In addition, an upper attenuation hole is formed at an upper portion of the attenuation tube so as to gradually increase along the upper direction, a lower attenuation hole is formed at a lower portion of the attenuation tube so as to gradually increase along the lower direction, An attenuation connection hole for spatially connecting the upper attenuation hole and the lower attenuation hole may be formed at the center of the lower attenuation hole.

In addition, the attenuation tube may have a damping connection hole formed in a predetermined size along the vertical direction.

In addition, the portion of the damping tube connected to the fixed frame may be formed as a straight line.

In addition, the attenuation tube may be formed such that the central axes of the upper attenuation holes, the lower attenuation holes, and the attenuation connection holes are connected in a straight line to be parallel to the central axis of the fixed frame.

According to the above-mentioned solution, the present invention has the effect of stably floating the float-type wind power generator installed on the sea even by simply installing a passive up-and-down rocking and rotation-fluctuation damping device in the floating wind power generator .

Particularly, the present invention relates to a method and a device for measuring the height or the swaying or rolling motion of a fluid (sea water) using a pressure drop at a tube outlet generated by the influence of surface friction due to movement of a fluid (sea water) (Pitching) is attenuated, there is an advantage that the structure is simple and the stability of the power generation facility can be sufficiently ensured.

In addition, the present invention can be installed not only in newly installed power generation facilities but also in existing power generation facilities, and it can be manufactured in various forms according to the shape of the floating structure of the floating wind power generator. Therefore, There is an advantage that the constraint can be minimized.

Therefore, it is possible to improve the stability, reliability and competitiveness of the structure in the field of pollution-free power generation, particularly in the field of wind power generation at sea.

FIG. 1 is an installation state diagram illustrating a floating wind turbine provided with a manual up-and-down rocking and rotary-motion damping device installed in water according to the present invention.
2 is a side cross-sectional view illustrating the passive up-and-down motion and rotational-motion damping device of Fig. 1;
3 is a plan view for explaining the passive up-and-down rocking and rotational-movement damping device of FIG. 1;
Fig. 4 is a view for explaining a vertical rocking damping effect by the passive up-and-down rocking and rotary rocking damping device of Fig. 1;
Fig. 5 is a view for explaining the effect of the rolling sway damping by the passive up-and-down rocking and rotational-dynamic damping device of Fig. 1;
6 is a view for explaining an embodiment of a passive up-and-down rocking and rotary-motion damping device for a floating wind power generator according to the present invention.
FIG. 7 is a view for explaining another embodiment of a passive up-and-down rocking and rotary-motion damping device for a floating wind power generator according to the present invention.
8 is a partial cutaway perspective view of FIG.
9 is a view for explaining another embodiment of a passive up-and-down rocking and rotational-movement damping device for a floating wind power generator according to the present invention.
FIG. 10 is a view for explaining another embodiment of a passive up-and-down rocking and rotary-motion damping device for a floating wind power generator according to the present invention.

Examples of the passive up-and-down rocking and rotational-rocking attenuator for a floating type wind power generator and a floating wind power generator equipped with a passive up-and-down rocking and rotary-type damping device installed in water according to the present invention can be variously applied. Best Mode for Carrying Out the Invention The most preferred embodiment will be described with reference to the accompanying drawings.

FIG. 1 is an installation state diagram illustrating a floating wind turbine provided with a manual up-and-down rocking and rotary-motion damping device installed in water according to the present invention.

1, the floating wind power generator A includes a floating structure 100 suspended on the water surface, a wind power generator 200 configured on the upper part of the floating structure 100, And includes a passive up-and-down rocking and rotational-movement damping device 300 configured on the side surface.

A support wire 400 connecting the floating structure 400 and the bottom surface of the floating structure 400 may be installed on the floating structure 400 so as to restrict movement of the floating type wind turbine A to another area .

Here, specific configurations and operating methods of the floating structure 100 and the wind power generator 200 can be modified in various ways according to the needs of those skilled in the art.

FIG. 2 is a side cross-sectional view for explaining the manual up-and-down motion and rotational-motion damping device of FIG. 1, and FIG. 3 is a plan view for explaining the passive up-

Referring to FIG. 2, the passive up-and-down and rotational-movement damping device 300 includes an inner frame 310, an outer frame 320, and a partition 330.

The inner frame 310 is formed to correspond to the outer surface of the floating structure 100. For example, when the floating structure 100 is formed as a cylinder as shown in FIGS. 2 and 3, the inner frame 310 may be formed in a cylindrical shape and may be coupled to the outer surface of the floating structure 100.

The outer frame 320 is spaced apart from the inner frame 310.

Further, the distance between the outer frame 320 and the inner frame 310 is formed to be the narrowest at the center and gradually increase along the upper and lower directions from the center.

In Fig. 2, the outer frame 320 may include an upper damping portion 321, a lower damping portion 322, and an attenuation connection portion 323.

The upper damping portion 321 may be formed such that the distance between the upper portion of the inner frame 310 and the upper portion of the inner frame 310 gradually increases in the upward direction. In other words, the upper damping portion 321 may be formed so as to be inclined such that the upper space portion is wider than the lower space portion.

In addition, the lower damping portion 322 may be formed such that the distance to the lower portion of the inner frame 310 gradually increases in the downward direction. In other words, the lower damping portion 322 may be formed to be inclined such that the lower space portion is wider than the upper space portion.

In addition, the attenuation connection portion 323 may be formed to maintain a constant distance from the inner frame 310. At this time, the attenuation connection part 323 may be formed so that the lower part of the upper damping part 321 and the upper part of the lower damping part 322 spatially extend.

The distance between the inner frame 310 and the damping connection portion 323 and the inclination angle of the upper damping portion 321 and the lower damping portion 322 can be variously varied depending on the needs of the floating wind power generator A and those skilled in the art It goes without saying that it can be changed.

Since the spacing distance between the attenuation connection portion 323 and the inner frame 310 is very narrow, the inner surface of the attenuation connection portion 323 and the inner frame 310 can be separated by the fluid (seawater) Skin friction may occur on the surface of the substrate, and a damping effect can be obtained by such surface friction.

The partition 330 is configured to connect the inner frame 310 and the outer frame 320 as shown in FIG.

Further, the partition wall 330 divides a space portion formed by the inner frame 310 and the outer frame 320 into at least two space portions.

Preferably, as shown in FIG. 3, the partition walls 330 are installed at at least one pair of positions symmetrical to each other with respect to the center of the floating structure 100, so that the up- So that the damping force against the fluctuation can be generated in a balanced manner.

Hereinafter, in describing Figs. 4 and 5, the sizes and ratios of the constructions shown in the respective figures are shown exaggerated for the sake of explanation and understanding

Fig. 4 is a view for explaining a vertical rocking damping effect by the passive up-and-down rocking and rotary rocking damping device of Fig. 1;

Referring to FIG. 4, when the floating structure 100 floats on the surface of the sea (SS), the passive up-and-down rocking and rolling-motion damping device 300 is locked down the water surface SS. Then, the internal space of the passive up-and-down rocking and rotation-fluctuation damping device 300 is filled with seawater.

Thereafter, when the floating wind turbine A is moved in the downward direction (center arrow in FIG. 4) due to the wind or wave caused by the typhoon, the seawater (solid line arrow in FIG. 4) flowing into the lower damping portion 322 The damping force by the water pressure (block arrow in FIG. 4) is generated in an upward direction due to the shape of the lower damping portion 322 in the process of flowing into the damping connection portion 323, Can be restrained from moving in the downward direction.

Such an effect may occur even when the floating wind turbine A moves upward.

Therefore, the up-and-down motion of the floating wind power generator A is attenuated by the damping force naturally generated by the shape of the passive up-and-down rocking and rotary-motion damping device 300 with respect to the up- .

Fig. 5 is a view for explaining a rotational vibration damping effect by the passive up-and-down rocking and rotational vibration damping device of Fig. 1;

5, in a state where the floating structure 100 floats on the surface of the sea (SS), the floating wind turbine A is caused to undergo rolling motion, 5, a damping force is generated in a downward direction on the left side of the manual up-and-down rocking and rotary-motion damping device 300, and a damping force is generated in a downward direction on the right side of the passive up- A damping force is generated in the upward direction, and a damping force against the rolling motion can be generated in the floating wind turbine (A).

Therefore, with respect to the lateral rocking of the floating wind turbine A, the lateral rocking of the floating wind turbine A is attenuated by the damping force naturally generated by the shape of the manual up-and-down rocking and rotary rocking damping device 300 .

6 is a view for explaining an embodiment of a passive up-and-down rocking and rotary-motion damping device for a floating wind power generator according to the present invention.

Referring to FIG. 6, the manual up-down and down-shift damping device 300 includes a first fixing portion 351, a second fixing portion 352, and a hinge portion 353.

The first fixing part 351 includes a first inner frame 310a and a first outer frame 320a formed to correspond to at least a part of the outer surface of the floating structure 100 (for example, hemispherical shape) And a first engaging portion 351a is formed on one side. Here, the first inner frame 310a and the first outer frame 320a are spaced apart from each other as shown in FIG.

The second fixing part 352 includes a second inner frame 310b and a second outer frame 320b whose inner surfaces are formed to correspond to at least another part of the outer surface of the floating structure 100, 2 coupling portion 351a. Here, the second inner frame 310b and the second outer frame 320b are spaced apart from each other in height as shown in FIG.

The first fixing portion 351 and the other fixing portion 352 are hinged by the hinge portion 353.

The first inner frame 310a of the first fixing part 351 and the second inner frame 310b and the second outer frame 320b of the first outer frame 320a and the second fixing part 352 And may be connected by barrier ribs 330, respectively.

6, when the first fixing part 351 and the second fixing part 352 are tightly fixed to the floating structure 100, the center of the floating structure 100 is referred to as a reference At least one pair of partitions may be provided at positions symmetrical to each other.

Therefore, the passive up-and-down rocking and rolling-motion damping device 300 is installed in the floating structure 100 of the already installed floating wind turbine A, and the first and second engaging portions 351a and 352a are combined (360), a passive up-and-down rocking and rotary-motion damping device (300) can be installed in the floating wind turbine (A).

In FIG. 6, reference numeral 361 is a bolt and reference numeral 362 is a nut.

Meanwhile, depending on the cross-sectional shape of the floating structure 100 of the floating wind turbine A, there may occur a case where the passive damping device 300 hinged to be hinged as shown in FIG. 6 may not be installed. For example, the cross-sectional shape of the floating structure 100 may be elliptical or rectangular.

In this case, as shown in FIG. 7, it is preferable to configure the passive up-and-down rocking and rotary-motion damping device 300 separately from each other.

FIG. 7 is a view for explaining another embodiment of a passive up-and-down rocking and rotary-motion damping device for a floating wind power generator according to the present invention, and FIG. 8 is a partial cutaway perspective view of FIG.

In FIG. 7, the sectional shape of the floating structure 100 is shown as a circular shape, but it is not limited thereto, and may be formed in the shape of an elliptical or polygonal shape according to the needs of those skilled in the art.

Referring to FIG. 7, the first fixing portion 351 'may have a third coupling portion 351b formed on the other side thereof, and the second fixing portion 352' may be configured with a fourth coupling portion 352b .

Therefore, the first coupling portion 351a and the second coupling portion 352a are coupled with and fixed to the third coupling portion 351b and the fourth coupling portion 352b, respectively, to thereby fix the already installed floating type wind turbine A A passive up-and-down rocking and rotation-fluctuation damping device 300 may be installed in the floating structure 100. [

FIG. 9 is a view for explaining another embodiment of a passive up-and-down rocking and rotary-motion damping device for a floating wind power generator according to the present invention, and FIG. 9 is a cross- Fig. 7 is a view for explaining another embodiment of the damping device.

Referring to FIG. 9, the passive up-and-down and rotational-motion damping device 300 includes a fixed frame 370 and a damping tube 380.

The fixed frame 370 is formed to correspond to the outer surface of the floating structure 100, and may be configured to be separated into at least two as shown in FIGS. 6 and 7, if necessary.

At least one pair of the damping tubes 380 may be formed on the outer surface of the fixed frame 370 so as to be symmetrical with respect to the center of the floating structure 100.

Also, the space portion may be formed to penetrate the attenuation tube 380 in the longitudinal direction, and the space portion may be formed to gradually increase along the upper and lower directions from the center as shown in FIG.

9, the damping tube 380 may form an upper damping hole 381 so as to gradually increase along the upper direction at the upper portion, and a lower damping hole 382 may be formed at the lower portion to gradually increase along the lower direction. And an attenuation connection hole 383 spatially connecting the upper attenuation hole 381 and the lower attenuation hole 382 can be formed at the center.

Also, the attenuation connection hole 383 may be formed to have a constant size along the vertical direction.

As shown in FIG. 9, the attenuation tube 380 may be configured such that a portion connected to the fixed frame 370 is formed in a straight line.

10, the central axes of the upper attenuating hole 381, the lower attenuating hole 382, and the attenuation connecting hole 383 are linearly connected to each other and fixed to the fixed frame 370, As shown in FIG.

In addition, the attenuation tube 380 can be configured to be fixed to the outer surface of the floating structure 100 without using the fixed frame 370 shown in Figs. 9 and 10 according to the needs of those skilled in the art.

As described above, the floating type wind turbine generator equipped with the manual up-and-down and rocking damping device installed in the water according to the present invention, and the passive up-and-down and rotary type damping device for the floating wind generator have been described. It will be understood by those skilled in the art that the technical features of the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Therefore, it is to be understood that the embodiments described above are intended to be illustrative, and not restrictive, in all respects, and that the scope of the invention is indicated by the appended claims rather than the foregoing description, And all equivalents and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

A: Floating wind power generator
100: Floating structure 200: Wind turbine
300: Passive up-and-down rocking and rotary-motion damping device
310: inner frame
320: outer frame 321: upper damping part
322: lower attenuator 323: attenuation connection
351: first fixing portion 352: second fixing portion
353: Hinge section 360: Coupling port
370: Fixed frame
380: tube for damping 381: upper attenuation hole
382: lower attenuation hole 383: attenuation connection hole
400: Support wire

Claims (11)

Floating structures floating on the surface; A wind power generator configured on an upper portion of the floating structure; And a passive up-and-down rocking and rotating-motion damping device formed on the lower surface of the water surface of the floating structure,
The passive up-and-down rocking and rotation-
An inner frame formed to correspond to an outer surface of the floating structure;
An outer frame spaced apart from the inner frame, the outer frame being formed such that the spacing distance is gradually increased along the upper and lower directions from the center; And
And at least two partition walls connecting the inner frame and the outer frame and partitioning the space formed by the inner frame and the outer frame into at least two spaces, wherein the passive up and down movement and the rotary motion damping device Floating wind power generator.
The method according to claim 1,
Wherein the outer frame includes an upper damping portion, a lower damping portion and an attenuation connection portion,
Wherein the upper damping portion comprises:
Wherein a distance between the inner frame and the upper portion of the inner frame is gradually increased in an upward direction,
The lower-
The distance between the lower end of the inner frame and the lower end of the inner frame is gradually increased in the downward direction,
The attenuating connection includes:
Wherein the lower portion of the upper damping portion and the upper portion of the lower damping portion are spatially connected to each other while maintaining a constant distance from the inner frame. The floating wind turbine generator .
3. The method according to claim 1 or 2,
Wherein,
Wherein the at least one pair of wind turbines are installed in at least one pair symmetrically with respect to the center of the floating structure.
A first fixing unit including a first inner frame formed to correspond to at least a part of the outer surface of the floating structure and a first outer frame spaced apart from the first inner frame, the first fixing unit including a first coupling unit on one side; And
A second inner frame formed so as to correspond to at least another portion of the outer surface of the floating structure included in the floating wind power generator, and a second outer frame spaced from the second inner frame, The first and second fixing parts constituted by the two coupling parts are hinged to each other at one side,
Wherein the first outer frame and the second outer frame comprise a first frame,
Wherein the spacing distance between the first inner frame and the second inner frame is gradually increased along the upper and lower directions from the center.
A first inner frame formed to correspond to at least a part of the outer surface of the floating structure, and a first outer frame spaced apart from the first inner frame, wherein a first coupling portion is formed on one side and a third A first fixing part in which a coupling part is formed; And
A second inner frame formed so as to correspond to at least another portion of the outer surface of the floating structure included in the floating wind power generator, and a second outer frame spaced from the second inner frame, And a second fixing part having a second coupling part to be coupled to the first coupling part and a fourth coupling part to be coupled to the third coupling part on the other side,
Wherein the first outer frame and the second outer frame comprise a first frame,
Wherein the spacing distance between the first inner frame and the second inner frame is gradually increased along the upper and lower directions from the center.
The method according to claim 4 or 5,
Wherein at least one pair of partitions are provided at positions symmetrical to each other with respect to the center of the floating structure in a state where the first fixing part and the second fixing part are closely fixed to the floating structure. Passive up-and-down rocking and rotational-rocking damping device.
A fixed frame formed to correspond to an outer surface of the floating structure; And
And at least one pair of damping tubes symmetrically arranged on an outer surface of the fixed frame with respect to a center of the floating structure,
Wherein the damping tube comprises:
Wherein the space portion is formed to penetrate in the longitudinal direction and gradually increase along the upper and lower directions from the center.
8. The method of claim 7,
An upper attenuation hole is formed in the upper portion of the damping tube so as to gradually increase along the upper direction,
A lower attenuation hole is formed in the lower portion of the attenuation tube so as to gradually increase along the lower direction,
And a damping connection hole spatially connecting the upper damping hole and the lower damping hole is formed at the center of the damping tube.
9. The method of claim 8,
Wherein the damping tube comprises:
And a damping connection hole is formed in a predetermined size along the up-and-down direction.
10. The method of claim 9,
Wherein the damping tube comprises:
And a portion connected to the fixed frame is formed in a straight line. The passive up-and-down motion and rotational-movement damping device for a floating wind power generator.
10. The method of claim 9,
Wherein the damping tube comprises:
And the center axes of the upper attenuation holes, the lower attenuation holes, and the attenuation connection holes are linearly connected to each other to be parallel to the central axis of the fixed frame.

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