WO2020256240A1

WO2020256240A1 - Offshore floating wind power generation apparatus

Info

Publication number: WO2020256240A1
Application number: PCT/KR2019/016690
Authority: WO
Inventors: 신현경; 김동주; 유영재
Original assignee: 울산대학교 산학협력단
Priority date: 2019-06-18
Filing date: 2019-11-29
Publication date: 2020-12-24
Also published as: KR102191770B1

Abstract

The present invention provides an offshore floating wind power generation apparatus comprising: floating bodies having buoyancy so as to float on the sea; a wind power generator which is provided above the floating bodies, and which produces electric power by using wind power generated at sea; a balance maintaining part which is connected to and provided on the floating bodies, and which absorbs the wave kinetic energy of the sea so as to maintain the floating bodies and the wind power generator in a balanced state; a damage sensing part which is provided inside the balance maintaining part, and which senses the inflow of seawater into the balance maintaining part so as to determine whether the balance maintaining part is damaged; and a damage filling part which is provided inside the balance maintaining part, and which fills up a damaged portion inside the balance maintaining part so as to prevent the seawater from flowing into the balance maintaining part when the damage sensing part senses the inflow of the seawater into the balance maintaining part. Therefore, when shaking occurs because of wind or waves in a state in which the wind power generator is provided and the floating bodies floating on the sea by means of buoyancy are supported by the balance maintaining part, the balance maintaining part absorbs the movement of the floating bodies so that the floating bodies maintain a balanced state, and when the balance maintaining part for supporting the floating bodies so as to maintain the balanced state thereof is damaged by external force, the damage sensing part senses the damage, and then the damage filling part fills up the damaged portion so as to prevent seawater from flowing into the damaged portion, and thus the balanced state of the floating bodies and the wind power generator is maintained.

Description

Floating offshore wind power generator

The present invention relates to a floating offshore wind power generator, and more particularly, to a floating offshore wind power generator that is installed to float on the sea, and generates electricity by using wind generated at sea.

In general, offshore structures can be moored while floating on the sea level, and are classified into various types according to functions, structures, and mooring methods. For example, offshore structures are of many types called SEMI (Semi-Submersible), TLP (Tensioned Leg Platform), SPAR, FPSO (Floating, Production, Storage and Off-loding), FSRU or drilling rigs, etc. There are marine structures.

In recent years, interest in alternative energy to replace thermal power generation, nuclear power generation, and ocean current power generation, and research and development of practical devices for its use, such as offshore power generation using wind energy simultaneously through an offshore structure floating above the sea level. The situation is focused on the development and interest in the device.

However, the conventional floating offshore wind power generator has a problem in that power generation efficiency is degraded without maintaining an equilibrium due to the occurrence of a roll motion in which the hull of an offshore structure is shaken left and right.

In order to solve the above problems, an equilibrium maintenance part was installed to keep the floating offshore wind turbine in an equilibrium state on the sea, but the balance was not maintained as seawater flowed into the damaged area due to the damage to the balance maintenance part. There is a problem that the power generation efficiency is deteriorated by not being maintained.

Such, a conventional floating offshore wind power device is presented in Korean Patent Publication No. 2012-0038708 (2012.04.24).

The present invention was created in order to solve the above problems, and it is possible to stably generate electricity by wind power by floating while maintaining it in an equilibrium state at sea, and detects it when the balance holding unit maintaining the equilibrium is damaged. Its purpose is to provide a floating offshore wind power generator that prevents seawater from entering the damaged area by blocking the damaged area after the damage.

In order to achieve the above object, the present invention is a floating body having a buoyancy to float on the sea; A wind turbine installed on the upper part of the floating body and generating electric power by using wind power generated at sea; An equilibrium holding unit connected to the floating body and absorbing wave kinetic energy at sea to maintain the floating body and the wind turbine in an equilibrium state; A damage detection unit installed inside the balance maintaining unit and detecting whether seawater is introduced into the balance maintaining unit to determine whether the balance unit is damaged; And installed inside the balance maintaining unit, and filling the damaged area inside the balance maintaining unit so as to prevent seawater from flowing into the balance maintaining unit when the damage detection unit detects the inflow of seawater into the balance maintaining unit. It provides a floating offshore wind power generator including a damaged filling part.

In the floating offshore wind power generator according to the present invention, the floating body may have a column structure, the lower end may be submerged in water and the upper end may protrude outside the water surface, and the circumferential surface of the floating body maintains the balance. An additional connection may be made, and the floating body and the balance holding part may be connected by a plurality of vertical connection bar members to be fixed at a predetermined interval.

The balance holding unit is connected to the floating body by the vertical connection bar member, a plurality of support members spaced apart from the circumference of the floating body, and the plurality of supports so that the plurality of support members are spaced apart at equal intervals. It may include a gap maintaining bar member connecting the members.

The plurality of support members may be disposed to have a triangular shape or a polygonal shape on the circumferential surface of the floating body, and the floating body may be disposed at a central portion between a plurality of support members provided to be spaced apart.

The support member may include a first support member having a cylindrical shape, and a second support member positioned above the first support member and having a diameter smaller than the diameter of the first support member, and the first The support member and the inside of the second support member may be divided into a plurality of first and second inner spaces by first and second partitions, respectively.

The damage detection unit and the damage filling unit may be separately provided inside each of the first and second inner spaces, and the damage detection unit may be installed on the bottom surfaces of the first and second inner spaces. I can.

The damaged filling unit includes a tube member provided inside the first and second inner spaces, an air injection member connected to the tube member and filling air into the tube member, and operation of the air injection member It may include a control member for controlling the control member, the control member is connected to the damage detection unit, when the damage detection unit detects damage to the first inner space and the second inner space, the air injection member may be operated. .

In addition, the damaged filling portion is filled with urethane foam, which is a filling member, and at one side thereof, a filling member main body provided with a locking means for controlling outflow of the internal filling member to the outside, and the locking means are connected to the locking means. It may include a locking means controller for controlling the operation, wherein the locking means controller is connected to the damage detection unit to release the locking means when the damage detection unit detects damage to the first inner space and the second inner space It is possible to allow the filling member to flow out of the filling member body.

The floating offshore wind turbine generator according to the present invention has the following effects.

First, when a wind turbine is installed and a floating body floating on the sea by buoyancy is supported by the balance holding unit and shaking occurs by wind or waves, the balance holding unit absorbs the movement of the floating body so that the floating body is balanced. The bar is maintained, and the power generation efficiency using wind power of the wind turbine at sea is stably maintained.

Second, when the balance holding part that supports the floating body to maintain the equilibrium state is damaged by external force, the damage detection part detects whether the damage is damaged, and then the damaged filling part fills the damaged part so that seawater does not flow into the damaged part. The generator is in equilibrium.

1 is a diagram schematically showing the configuration of a floating offshore wind power generator according to an embodiment of the present invention.

2 is a view showing the inside of the support member of the balance holding unit in which the damage detection unit and the damage filling unit shown in Fig. 1 are installed.

3 is an exemplary view showing a state in which the damaged filling part fills the damaged portion when the support member shown in FIG. 2 is damaged.

4 is a view showing the inside of the support member of the balance holding unit in which the damaged filling unit is installed according to another embodiment.

5 is an exemplary view showing a state in which a damaged part is filled in a damaged part according to another embodiment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors appropriately explain the concept of terms in order to explain their own invention in the best way. Based on the principle that it can be defined, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

Referring to the drawings, a floating offshore wind turbine generator 1000 according to an embodiment of the present invention includes a floating body 1100, a wind turbine generator 1200, an equilibrium holding unit 1300, and a damage detection unit 1400. ), and a damaged filling part 1500, and a vertical connection bar member 1600 for fixing the floating body 1100 and the balance holding part 1300 to be spaced apart from each other at a predetermined interval may be further included.

The floating body 1100 is a structure that supports the wind power generator 1200, which will be described later, together with the balance maintaining unit 1300 so that it can be positioned on the sea. It is preferable that the floating body 1100 has buoyancy so that the wind turbine 1200 can be connected and supported in a stable floating state at sea together with the balance holding unit 1300.

Referring to Figure 1, the upper portion of the floating body 1100 is preferably arranged to protrude out of the water, and the lower end is preferably a column structure arranged to be submerged in the water, but is not limited thereto, and the design changed so that the lower end also protrudes out of water Can be.

A plurality of grooves (not shown) are formed around the outer surface of the floating body 1100 to reduce a contact area with the sea surface, thereby minimizing the wave resistance applied to the floating body 1100.

A wind power generator 1200 is installed in the floating body 1100, and the wind power generator 1200 is a power generation facility that generates power using wind power generated at sea. In this way, the wind turbine 1200 is connected to the floating body 1100 so as to protrude vertically upward while being disposed at the center of the upper surface of the floating body 1100.

Here, the wind turbine 1200 is connected to the tower 1210 vertically connected to the upper surface of the floating body 1100, and is installed connected to the upper portion of the tower 1210 to generate electricity from the rotational force of the blade 1230. It is illustrated that the nacelle 1220 and the blade 1230 are rotatably installed in the nacelle 1220 and rotated by wind power, but are not limited thereto. In this case, the nacelle 1220 may be rotatably connected to the upper end of the tower 1210.

In addition, the lower end of the wind turbine 1200, more specifically, the lower end of the tower 1210 may be rotatably connected to the upper end of the floating body 1100. In this way, when the lower end of the wind turbine 1200 is rotatably connected to the upper end of the floating body 1100, the wind power is prevented from being transmitted to the floating body 1100 when wind power of a certain strength or more is generated. By blocking the occurrence of vibration caused by, the floating body 1100 can stably support the wind power generator 1200.

The lower end of the floating body 1100 may be fixed to the sea floor at the installation point, but is not limited thereto, and the lower end of the floating body 1100 is not directly fixed to the sea floor, but by the underwater mooring wire 1120 It may be connected to a weight-added structure (not shown) installed on the sea floor and fixed so as not to flow at sea.

An equilibrium holding part 1300 is connected to the floating body 1100, and the balance holding part 1300 supports the floating body 1100 at sea while absorbing the wave kinetic energy of the sea and the floating body 1100 ) And the wind power generator 1200 in an equilibrium state, and the balance holding unit 1300 is a floating material having buoyancy to support the floating body 1100, and is formed of various buoyancy structures. desirable.

The balance maintaining part 1300 is connected to the circumferential surface of the floating body 1100, and the balance maintaining part 1300 is a gap connecting the plurality of support members 1320 and the plurality of support members 1320 And a retaining bar member 1340.

The floating body 1100 and the plurality of support members 1320 constituting the balance holding part 1300 are connected by a plurality of vertical connection bar members 1600 and are fixed at regular intervals.

The plurality of support members 1320 are connected to the circumferential surface of the floating body 1100 by the plurality of vertical connection bar members 1600, and the plurality of support members 1320 are formed of the floating body 1100. It is preferable that they are arranged to have a triangular shape or a polygonal shape on the circumferential surface. A plurality of support members 1320 arranged to be spaced apart in a triangular shape or polygonal shape on the circumferential surface of the floating body 1100 are connected by a spacing bar member 1340 to be spaced apart at equal intervals.

The floating body 1100 is preferably disposed in the center between a plurality of support members 1320 provided spaced apart, and the plurality of support members 1320 are located on the circumferential surface of the floating body 1100 to By absorbing the wave kinetic energy of the floating body 1100 and the wind turbine 1200 installed in the floating body 1100 to maintain an equilibrium state.

1 to 3, the plurality of support members 1320 includes a first support member 1322 and a second support member 1324, and the first support member 1322 and the second support member 1320 The inside of the support member 1324 is preferably divided into a plurality of first inner spaces 1322b and second inner spaces 1324b by first partition walls 1322a and second partition walls 1324a, respectively.

The first support member 1322 has a cylindrical shape, a second support member 1324 is provided above the first support member 1322, and the second support member 1324 also has a cylindrical shape. The diameter of the second support member 1324 is smaller than the diameter of the first support member 1322.

A damage detection part 1400 is installed inside the balance maintaining part 1300, preferably in the first internal space 1322b and the second internal space 1324b, and the damage detection part 1400 Serves to determine whether or not the balance maintaining unit 1300 is damaged by detecting seawater inflow into the first inner space 1322b and the second inner space 1324b, and preferably A damaged area of the divided first inner space 1322b and the second inner space 1324b is determined, and the damage detection unit 1400 includes each of the divided first inner space 1322b and the first 2 It is preferable to be installed on the bottom of the inner space (1324b).

A water level sensor is preferably used as the damage detection unit 1400, but is not limited thereto, and is installed on the bottom surfaces of the first inner space 1322b and the second inner space 1324b, and the first inner space ( 1322b) and various types of sensors capable of detecting seawater flowing into the second inner space 1324b may be used.

The damage detecting part 1400 is connected to the damaged packing part 1500, and the damaged packing part 1500 is inside the balance holding part 1300, preferably the first inner space 1322b divided into a plurality of ) And the second inner space 1324b.

2 and 3, in the damage filling part 1500, the damage detection part 1400 is the balance maintaining part 1300, preferably the first inner space 1322b and the second inner space. When detecting the inflow of seawater into the interior of (1324b), the first inner space 1322b and the second inner space are prevented from entering the first inner space 1322b and the second inner space 1324b. It serves to fill the damaged area where seawater flows into the space 1324b.

The damaged filling part 1500 includes a tube body 1510, an air injection member 1520, and a control member 1530. The tube body 1510 is provided inside the first inner space 1322b and the second inner space 1324b, and the tube body 1510 is expanded by air injected with a rubber material resistant to impact. desirable.

The air injection member 1520 is connected to the tube member 1510 and serves to fill air into the tube member 1510, and the air injection member 1520 is connected to the tube member 1510. As air is filled in the tube member 1510, the tube member 1510 expands inside the first inner space 1322b and the second inner space 1324b, and the first inner space 1322b and the second inner space 1324b ) To prevent seawater from flowing into the damaged area.

The air injection member 1520 is connected to the control member 1530, and the control member 1530 serves to control the operation of the air injection member 1520. A detection sensor (not shown) is provided inside the first inner space 1322b and the second inner space 1324b, and the detection sensor (not shown) includes the first inner space 1322b and the second inner space It is preferable to be located on top of (1324b).

The detection sensor (not shown) is also connected to the control member 1530, and when the detection sensor (not shown) detects the close contact of the tube member 1510, the control member 130 causes the air injection member 1520 ) Will stop the operation.

The control member 1530 operates the air injection member 1520 when the damage detection unit 1400 detects damage to the first inner space 1322b and the second inner space 1324b to operate the tube member ( 1510) is expanded, and when the detection sensor (not shown) detects close contact of the tube member 1510, the operation of the air injection member 1520 is stopped so that the tube member 1510 is no longer inflated. Thus, damage to the first and

second partition walls

1322a and 1324a, the first inner space 1322b and the second inner space 1324b by the tube member 1510 is prevented.

The damaged filling part 1500 is not limited to including the tube body 1510, the air injection member 1520, and the control member 1530, as shown in FIGS. 4 and 5 The design may be changed to be composed of a main body 1550 and a locking means controller 1560.

The inside of the filling member body 1550 is filled with urethane foam as a filling member, and at one side of the filling member body 1550, a locking means 1552 for controlling the exposure of the urethane foam filled therein to the outside is provided. It is equipped. The locking means 1552 is connected to the locking means controller 1560, and the locking means controller 1560 serves to control the operation of the locking means 1552.

The locking means controller (1560) is connected to the damage detection unit (1400), and when the damage detection unit (1400) detects the damage of the first internal space (1322b) and the second internal space (1324b), the locking means By operating (1552), the urethane foam filled in the filling member body 1550 is exposed to the outside of the filling member main body 1550, and the urethane foam exposed to the outside is exposed to the first inner space 1322b. And the second inner space 1324b is hardened while filling the inside of the first inner space 1322b and the second inner space 1324b, thereby sealing the damaged portions of the first inner space 1322b and the second inner space 1324b to prevent seawater from flowing into the damaged portions.

Therefore, when a wind power generator is installed and a floating body floating on the sea by buoyancy is supported by the balance holding unit and shaking occurs by wind or waves, the balance holding unit absorbs the movement of the floating body, so that the floating body is balanced. When the balance holding part that supports the floating body to maintain the equilibrium state is damaged by external force, the damage detection part detects whether it is damaged, and then the damaged filling part fills the damaged part to prevent seawater from entering the damaged part. And the balance of the wind turbine is maintained.

The present invention has been described with reference to the embodiments shown in the drawings, but these are only exemplary, and those of ordinary skill in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

The present invention can be used in an offshore wind turbine generator.

Claims

A floating body having buoyancy to float on the sea;

A wind turbine installed on the upper part of the floating body and generating electric power by using wind power generated at sea;

An equilibrium holding unit connected to the floating body and absorbing wave kinetic energy at sea to maintain the floating body and the wind turbine in an equilibrium state;

A damage detection unit installed inside the balance maintaining unit and detecting whether seawater is introduced into the balance maintaining unit to determine whether the balance unit is damaged; And

A breakage installed inside the balance maintaining unit and filling the damaged area inside the balance maintaining unit so as to prevent seawater from flowing into the balance unit when the damage detection unit detects the inflow of seawater into the balance unit Floating offshore wind power generator including a filling unit.
The method according to claim 1,

The floating body,

It has a column structure, the lower part is submerged in the water and the upper part protrudes outside the water surface,

The floating body and the balance holding part are connected to the circumferential surface of the floating body, and the floating body and the balance holding part are connected by a plurality of vertical connection bar members to be fixed at regular intervals.
The method according to claim 2,

The balance holding part,

A plurality of support members connected to the floating body by the vertical connection bar member and spaced apart from the circumference of the floating body,

Floating offshore wind power generation apparatus comprising a gap maintaining bar member for connecting the plurality of support members so that the plurality of support members are positioned to be spaced apart at equal intervals.
The method of claim 3,

The plurality of support members are arranged to have a triangular shape or a polygonal shape on the circumferential surface of the floating body,

Floating offshore wind power generator, characterized in that the floating body is disposed in a central portion between a plurality of support members provided to be spaced apart.
The method of claim 3,

The support member,

A first supporting member having a cylindrical shape,

It is located above the first support member and includes a second support member having a diameter smaller than the diameter of the first support member,

The inside of the first support member and the second support member is a floating offshore wind turbine, characterized in that divided into a plurality of first and second internal spaces by a first partition wall and a second partition wall, respectively.
The method of claim 5,

Each of the first inner space and the second inner space are individually provided with the damage detection unit and the damage filling unit,

The damage detection unit is a floating offshore wind power generator installed on the bottom of the first inner space and the second inner space.
The method of claim 6,

The damaged filling part,

A tube member provided inside the first inner space and the second inner space,

An air injection member connected to the tube member and filling air into the tube member,

It includes a control member for controlling the operation of the air injection member,

The control member is connected to the damage detection unit, and when the damage detection unit detects the damage of the first inner space and the second inner space, the floating offshore wind power generator, characterized in that to operate the air injection member.
The method of claim 6,

The damaged filling part,

A filling member main body is filled with urethane foam, which is a filling member, and a locking means is provided on one side of the filling member to prevent leakage of the filling member to the outside;

And a locking means controller connected to the locking means and controlling the operation of the locking means,

The locking means controller is connected to the damage detection unit so that when the damage detection unit detects damage to the first and second internal spaces, the locking means is released to allow the filling member to flow out of the filling member body. Floating offshore wind power generator.