KR20240174209A - Structure of multi line anchor station for floating offshore wind turbines - Google Patents

Abstract

The present invention relates to a multi-line anchor station structure for a floating offshore wind power plant, and more specifically, by using a buoyancy tank, the weight of the anchor station can be significantly reduced during launching and salvaging, and by forming a compartment, seawater can be selectively controlled to flow into only a portion of the buoyancy tank, thereby providing the effect of more easily controlling the center of gravity required during construction of the anchor station.
A multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention comprises: an anchor station installed on a seabed and provided to fix a floating position of a floating offshore wind power plant; wherein the anchor station is provided to provide buoyancy to the anchor station so that it can move while floating on the sea when moved to an installation position, and comprises: a buoyancy tank having a hollow portion forming an empty space of a predetermined volume therein and a partition portion provided to partition the hollow portion; and a seawater inflow portion formed to communicate with the hollow portion while penetrating the buoyancy tank so as to introduce seawater into the hollow portion.

Description

{Structure of multi line anchor station for floating offshore wind turbines}

The present invention relates to a multi-line anchor station structure for a floating offshore wind power plant, and more specifically, by using a buoyancy tank, the weight of the anchor station can be significantly reduced during launching and salvaging, and by forming a compartment, seawater can be selectively controlled to flow into only a portion of the buoyancy tank, thereby providing the effect of more easily controlling the center of gravity required during construction of the anchor station.

Wind power generation facilities are devices installed on land or at sea that convert wind energy into electrical energy and produce electricity. Wind power generation is gaining attention as a new renewable energy production system due to environmental regulations due to global warming and the instability of fossil fuel supply and demand.

Wind power facilities have been installed mainly on land, but offshore installations are gradually increasing. For wind power generation, the wind quality is generally better offshore than on land, and it has the advantage of being able to more easily respond to blade noise issues. In particular, in order to secure economic feasibility, securing a large-scale complex is required, but it is difficult to have such a complex on land, so coastal or offshore seas are emerging as large-scale offshore wind farms.

Structures for installing wind power generation facilities offshore can be broadly divided into fixed and floating types. Fixed structures are structures that are directly fixed to the seabed, as on land, and respond to environmental loads through structural deformation, while floating structures float on the water surface and are subject to self-weight, buoyancy, environmental loads, and mooring forces, and overcome environmental loads through the free movement of the structure.

Until recently, offshore wind power plants were mainly installed in shallow waters as fixed structures. However, fixed structures provide favorable operating conditions because the structure is fixed to the seabed, but as the water depth increases, the size of the structure becomes too large and it becomes difficult to avoid the risk of fatigue failure. In addition, there is a problem that the cost of manufacturing and installing the structure increases astronomically due to the trend of wind power generators becoming larger.

In addition, the wind becomes stronger and more constant the farther away from the land, so power generation efficiency can be increased. Accordingly, the need for wind power generation in deeper waters farther from the coast is being raised. Accordingly, much research is being conducted on floating wind power generation facilities that are not limited by the size of the structure even when the water depth increases.

In general, suction anchors are widely used as mooring devices applied to floating wind power generation facilities. When applying a suction anchor, the mooring line must be connected vertically to the structure in order to maintain the tension of the mooring line, so it is used by connecting it to the center of the top of the suction pile anchor.

That is, since tension is exerted between the suction anchor and the structure, and the mooring position of the structure and the mooring position of the suction anchor must correspond one-to-one, the suction anchor must be installed at the exact location. At this time, the suction anchor is a pile for offshore construction in the shape of an inverted cup, and it is a pile that uses the pressure difference between the inside and outside of the suction anchor to drain the water inside the suction anchor using the suction pump on the top of the suction anchor.

As an example of such a suction anchor, a technology described in Korean Patent No. 10-1546484 has been proposed. The technology described therein has a mooring line positioned above the suction anchor, but there is a problem that it is difficult to install to the desired depth if the penetration resistance is large.

In addition, in the case of these suction anchors or general anchors, as the scale and size of the floating wind power generation facilities to be fixed increase to a large capacity, the weight of the anchor itself increases or the number of anchors must increase, and accordingly, there are many time-consuming and economical problems that arise in the process of manufacturing a large-capacity anchor, transporting it from the manufacturing plant to the sea, and salvaging the anchor from the sea and installing it on the seabed.

Korean Patent Registration No. 10-1546484 (August 17, 2015)

The present invention has been created to solve the above-described problems, and more specifically, it aims to provide a multi-line anchor station structure for a floating offshore wind power plant, which can significantly reduce the weight of an anchor station during launching and lifting by using a buoyancy tank forming a hollow portion, and can selectively control the inflow of seawater only into a portion of the buoyancy tank by forming a compartment, thereby making it easier to control the center of gravity required during construction of the anchor station.

A multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention comprises: an anchor station installed on a seabed and provided to fix a floating position of a floating offshore wind power plant; wherein the anchor station is provided to provide buoyancy to the anchor station so that it can move while floating on the sea when moved to an installation position, and comprises: a buoyancy tank having a hollow portion forming an empty space of a predetermined volume therein and a partition portion provided to partition the hollow portion; and a seawater inflow portion formed to communicate with the hollow portion while penetrating the buoyancy tank so as to introduce seawater into the hollow portion.

More specifically, the partition is characterized by forming at least one partition wall of a predetermined thickness to divide the space of the hollow portion into upper and lower parts.

More specifically, the partition is characterized by forming at least one bulkhead of a predetermined thickness to radially divide the space of the hollow portion with the seawater inlet portion as the center.

More specifically, the anchor station is characterized by including a valve formed at one or more locations selected from the upper or lower portion of the anchor station and connected to the seawater inlet to control the amount of seawater flowing into the seawater inlet from the outside.

More specifically, the seawater inlet section is characterized by including: an inlet pipe provided at the center of the anchor station to form a passage for the inflow of seawater, and having at least one end selected from the upper end or the lower end open; and an inlet hole formed in multiple numbers on the outer surface of the inlet pipe so that seawater introduced through the inlet pipe is respectively injected into the partitioned spaces of the hollow section, and each inlet hole is respectively connected to the partitioned spaces of the hollow section.

More specifically, the anchor station is characterized by including a fixing member formed at the lower portion of the buoyancy tank to support the buoyancy tank and secure it to the seabed, and having a vertical plate formed to space the buoyancy tank from the seabed by a predetermined height.

More specifically, the vertical plates are provided in multiple numbers and are formed to intersect each other, so that a space is formed between each vertical plate.

More specifically, the anchor station is characterized by including a concrete injection part formed on the upper part of the anchor station so that concrete is injected and poured into the interior of the anchor station from the outside while floating on the sea.

More specifically, the anchor station is characterized by including a mooring line fastening section formed as many times as the number of mooring lines to be fastened, wherein the mooring line connecting the anchor station and the floating offshore wind turbine is fastened.

A multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention includes a buoyancy tank, thereby significantly reducing the weight of the anchor station when transporting it from a manufacturing plant to the sea, when launching it into the sea, and when lifting it to an installation location. As a result, large offshore heavy equipment that is essentially required when installing a conventional anchor station becomes unnecessary, and the time and cost required for transporting, installing, and constructing the anchor station can be reduced.

In addition, the multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention includes a seawater inlet and a valve, thereby controlling the amount of seawater flowing into the hollow portion of a buoyancy tank during construction of the anchor station while gradually submerging and lowering the anchor station to an installation location on the seabed, thereby providing the effect of preventing the anchor from shaking and moving out of the installation location.

In particular, the multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention includes a compartment, thereby providing an effect of selectively controlling seawater to flow into only a portion of the compartmented space of the buoyancy tank cavity in accordance with the center of gravity required for each situation of the anchor station through control of the valve and the seawater inlet.

In addition, a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention includes a vertical plate that forms a separation space while spacing a buoyancy tank apart from the seabed by a predetermined height, so that the vertical plate digs into sand and is fixed while being vertically pressed on the seabed, and sand on the seabed flows into the separation space, thereby providing an effect of increasing frictional force between the anchor station and the seabed.

In addition, since the multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention includes a concrete injection portion, concrete can be injected and poured into the interior of the anchor station while the anchor station is floating on the sea after being launched, thereby significantly reducing the weight of the anchor station when it is launched, thereby providing the effect of significantly reducing required manpower, equipment, time, and resulting costs.

In addition, the multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention includes a mooring line fastening section, so that multiple mooring lines can be fastened to one anchor station to simultaneously connect multiple floating offshore wind power generators, thereby fixing the positions of multiple floating offshore wind power generators with one anchor station. Therefore, compared to the conventional anchor installation method, the number of anchors required for installation can be significantly reduced, thereby providing the effect of reducing installation and construction costs.

FIG. 1 is a cross-sectional perspective view illustrating an anchor station of a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention.
FIG. 2 is a cross-sectional perspective view illustrating an example of a state in which a compartment is connected to a buoyancy tank of an anchor station constituting a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention.
FIG. 3 is a front perspective view illustrating an example of a state in which seawater has flowed into the hollow portion of an anchor station constituting a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention.
FIG. 4 is a cross-sectional perspective view illustrating another example of a state in which a compartment is connected to a buoyancy tank of an anchor station constituting a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention.
FIG. 5 is a plan perspective view illustrating another example of a state in which seawater has flowed into the hollow portion of an anchor station constituting a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention.
FIG. 6 is a perspective view showing the exterior of an anchor station constituting a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention.
FIG. 7 is a bottom perspective view illustrating an anchor station of a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention.
FIG. 8 is a front perspective view illustrating an anchor station of a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention.
Figure 9a is a drawing showing an example of a state in which concrete injected through a concrete injection part is poured onto the inner wall of a buoyancy tank.
Figure 9b is a drawing showing an example of a state in which concrete injected through a concrete injection part is poured onto the bottom surface of a buoyancy tank.
FIG. 10 is a drawing showing an example of a state in which an anchor station of a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention is constructed.

The detailed description of the invention set forth below refers to the accompanying drawings which illustrate specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the invention, while different from each other, are not necessarily mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention.

It should also be understood that the positions or arrangements of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the following detailed description is not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly so described. Like reference numerals in the drawings designate the same or similar functions throughout the several aspects.

Hereinafter, in order to enable a person having ordinary skill in the art to easily carry out the present invention, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

First, a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention will be described with reference to FIGS. 1 to 6.

FIG. 1 is a cross-sectional perspective view illustrating an anchor station of a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention, FIG. 2 is a cross-sectional perspective view illustrating an example of a state in which a compartment is combined with a buoyancy tank of the anchor station, and FIG. 3 is a front perspective view illustrating an example of a state in which seawater has flowed into a hollow portion of the anchor station.

In addition, FIG. 4 is a cross-sectional perspective view showing another example of a state in which a compartment is coupled to a buoyancy tank of an anchor station constituting a multi-line anchor station structure for a floating offshore wind power plant according to an embodiment of the present invention, FIG. 5 is a plan perspective view showing another example of a state in which seawater has flowed into a hollow portion of an anchor station, and FIG. 6 is a perspective view showing the exterior of an anchor station constituting a multi-line anchor station structure for a floating offshore wind power plant according to an embodiment of the present invention.

First, the multi-line anchor station structure for a floating offshore wind power plant of the present invention includes an anchor station (100).

Here, the anchor station (100) is installed on the seabed and is provided to fix the floating position of a floating offshore wind turbine (not shown).

More specifically, the anchor station (100) includes a buoyancy tank (110), a seawater inlet (120), and a valve (130), as shown in FIG. 1.

First, the buoyancy tank (110) is provided to provide buoyancy to the anchor station (100) so that the anchor station (100) can move while floating on the sea when moved to the installation location.

More specifically, the buoyancy tank (110) includes a hollow portion (111), a partition portion (112), a first frame (113), and a second frame (114), as shown in FIGS. 1 to 3.

Here, the hollow portion (111) is provided to form an empty space of a predetermined volume inside the anchor station, as shown in FIG. 1.

Accordingly, the multi-line anchor station structure for a floating offshore wind power plant of the present invention includes a buoyancy tank (110), thereby significantly reducing the weight of the anchor station when transporting it from the manufacturing plant of the anchor station to the sea, when launching it into the sea, and when lifting it to the installation location. As a result, the large offshore heavy equipment that is essentially required when installing a conventional anchor station is unnecessary, and the time and cost required for transporting, installing, and constructing the anchor station can be reduced.

In addition, since the anchor station is configured to include a buoyancy tank (110), it can float and move on the sea by its own buoyancy, and can be moved while floating from the manufacturing plant of the anchor station to the installation location on the sea with a small force of a tugboat (not shown) without the help of a large vessel, thereby providing the effect of significantly reducing the time and cost required for salvaging the anchor station.

In addition, as the capacity of the floating offshore wind turbine that is the fixed target increases to a large capacity, the weight required for the anchor station also increases to a large capacity, and the problem of manufacturing and transporting a large-scale and large-capacity anchor station is a difficulty that must be solved. However, since the anchor station is configured to include a buoyancy tank (110) forming a hollow portion (111), a process for manufacturing a large capacity anchor station is unnecessary, and thus, not only can the efficiency of work be improved when transporting it from the manufacturing plant to the sea, but also, since the anchor station has its own buoyancy, it can be moved to the sea by self-propulsion, thereby solving this problem.

Therefore, it provides the effect of being able to appropriately expand the required weight of the anchor station according to the capacity of the floating offshore wind turbine that is the fixed target.

In addition, although not shown in the drawing, the anchor station in which the hollow portion (111) is formed may be equipped with a sensing and monitoring device for collecting various data to monitor the underwater environment surrounding the anchor station and to monitor the maintenance of the anchor station itself.

Next, the above-mentioned partition (112) is provided to partition the above-mentioned hollow portion (111).

More specifically, the partition (112) is characterized by forming at least one partition wall of a predetermined thickness to divide the space of the hollow portion (111) into upper and lower parts, as shown in FIGS. 2 and 3.

Here, by controlling the seawater inlet and valve described later, seawater can be sequentially introduced into the upper and lower spaces of the hollow section divided by the partition (112).

For example, when the anchor station is lowered toward the installation location on the seabed, seawater (W) is introduced into the lower space (111a) of the hollow portion to increase the weight of the buoyancy tank, thereby stably submerging the anchor station and slowly lowering it in the vertical direction while maintaining balance in the horizontal direction.

In addition, when the anchor station arrives at the installation location on the seabed, the seawater inlet and valve described later can be controlled to allow seawater to flow into the upper space (111b) of the hollow portion, thereby fixing the anchor station so that it is completely settled on the seabed.

As another example, the partition (112) is characterized by forming at least one partition wall of a predetermined thickness to radially divide the space of the hollow portion (111) centered on the seawater inlet, as shown in FIGS. 4 and 5.

More specifically, by controlling the seawater inlet and valve described later, seawater can be sequentially introduced into the radial space of the hollow section divided by the partition (112).

For example, when the anchor station is lowered toward the installation location on the seabed, seawater (W) is introduced into the second space (111d) and the fourth space (111f) of the hollow portion to increase the weight of the buoyancy tank, thereby stably submerging the anchor station and gradually lowering it in the vertical direction while maintaining balance in the horizontal direction.

In addition, when the anchor station reaches the installation location on the seabed, the seawater inflow portion and valve described later can be controlled to allow seawater to flow into the first space (111c) and the third space (111e) of the hollow portion, thereby fixing the anchor station so that it is completely settled on the seabed.

Accordingly, the multi-line anchor station structure for a floating offshore wind power plant of the present invention includes a partition (112), thereby providing an effect of selectively controlling seawater to flow into only some of the partitioned spaces of the buoyancy tank cavity in accordance with the center of gravity required for each situation of the anchor station through control of the valve and the seawater inlet.

Next, the first frame (113) forms a border of a predetermined thickness from the inlet pipe (121) of the seawater inlet (120) to be described later to the inner wall surface of the buoyancy tank (110), as illustrated in FIG. 1.

More specifically, the first frame (113) may be provided in multiple numbers inside the buoyancy tank (110) and formed in a radial shape centered on the seawater inlet (120).

And, the second frame (114) is formed to surround the inner surface of the buoyancy tank, and is provided in multiple numbers and formed to intersect with each other.

More specifically, the first frame (113) and the second frame (114) are formed to prevent the structural strength of the anchor station from being reduced by forming a hollow space (111) inside the buoyancy tank (110).

Accordingly, the multi-line anchor station structure for a floating offshore wind power plant of the present invention includes a first frame (113) and a second frame (114), thereby providing an effect of preventing the occurrence of a problem in which the structural strength of the anchor station is reduced due to the formation of a hollow space inside the buoyancy tank.

Next, the seawater inlet (120) is formed to penetrate the buoyancy tank (110) and communicate with the hollow portion (111) to introduce seawater into the hollow portion (111), as shown in FIGS. 1 and 3.

More specifically, the seawater inlet (120) includes an inlet pipe (121) and an inlet hole (122).

First, the inlet pipe (121) is provided at the center of the anchor station (100) to form a passage for seawater to flow in, and is characterized in that at least one end selected from the upper or lower end is open.

Here, the inlet pipe (121) is connected to a valve (130) to be described later, and is characterized in that at least one end selected from the upper or lower end is opened or closed by control of the valve.

Next, the inlet holes (122) are formed in multiple numbers on the outer surface of the inlet pipe (121) so that seawater introduced through the inlet pipe (121) is injected into each of the partitioned spaces of the hollow portion (111), and are characterized in that they are each connected to the partitioned spaces of the hollow portion (111).

In addition, the above inlet port (122) is connected to a valve (130) to be described later, and some of the plurality of selected ones can be opened or closed by control of the valve.

For example, when the inlet pipe (121) connected to the valve (130) rotates under the control of the valve, some of the inlet holes (122) among the plurality are opened, and seawater can be injected only into some space of the hollow portion connected to the opened inlet holes.

More specifically, the inflow port (122) of the seawater inflow portion is connected to each space of the hollow portion divided through the above-described partition (112) so that the inflowing seawater can be sequentially injected.

Accordingly, by controlling the valve connected to the seawater inlet (120), the effect of selectively adjusting the space in which seawater is received among the partitioned spaces of the hollow section according to the center of gravity required depending on the situation of the anchor station is provided by allowing seawater to be introduced only through some of the inlet holes (122).

Next, the valve (130) is formed at one or more locations selected from the upper or lower portion of the anchor station (100) and is connected to the seawater inlet (120) to control the amount of seawater flowing into the seawater inlet (120) from the outside.

More specifically, when releasing and removing the anchor station, the valve (130) can be controlled to discharge seawater flowing into the buoyancy tank (110) and inject air so that self-floating of the anchor station is possible, thereby enabling recycling and reinstallation of the anchor station.

As described above, the multi-line anchor station structure for a floating offshore wind power plant of the present invention includes a seawater inlet (120) and a valve (130), thereby controlling the amount of seawater flowing into the hollow portion of a buoyancy tank during construction of the anchor station, while allowing the anchor station to be gradually submerged and lowered to an installation location on the seabed, thereby providing the effect of preventing the anchor from shaking and moving out of the installation location.

In addition, the multi-line anchor station structure for a floating offshore wind power plant of the present invention can freely adjust its own buoyancy by adjusting the weight and weight of the anchor station through the seawater inlet (120) and valve (130), thereby providing the effect of enabling self-floating and self-installation of the anchor station using the buoyancy difference.

Next, the anchor station (100) includes a fixed part (140), a concrete injection part (150), and a mooring line fastening part (160), as shown in FIG. 6.

First, the fixed part (140) is formed at the bottom of the buoyancy tank (110) and is provided to support the buoyancy tank (110) and fix it to the seabed.

In addition, the concrete injection part (150) is characterized by being formed on the upper part of the anchor station (100) so that concrete is injected and poured into the interior of the anchor station from the outside while the anchor station (100) is floating on the sea.

Accordingly, the multi-line anchor station structure for a floating offshore wind power plant of the present invention includes a concrete injection part (150), so that concrete can be injected and poured into the interior of the anchor station while the anchor station is floating on the sea after being launched, thereby significantly reducing the weight of the anchor station when it is launched, thereby providing the effect of significantly reducing required manpower, equipment, time, and resulting costs.

In addition, the mooring line fastening part (160) is provided so that a mooring line (not shown) connecting the anchor station (100) and the floating offshore wind turbine (not shown) is fastened.

Hereinafter, the fixed part (140), concrete injection part (150), and mooring line fastening part (160) will be described in more detail with reference to FIGS. 6 to 10, which will be described later.

Next, with reference to FIGS. 6 and 7, a fixing member (140) constituting a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention will be described in more detail.

FIG. 6 is a perspective view showing the exterior of an anchor station constituting a multi-line anchor station structure for a floating offshore wind power plant according to an embodiment of the present invention, as described above, and FIG. 7 is a bottom perspective view showing an anchor station of a multi-line anchor station structure for a floating offshore wind power plant according to an embodiment of the present invention.

First, the fixed member (140) is formed at the bottom of the buoyancy tank (110) as described above and is provided to support the buoyancy tank (110) and secure it to the seabed.

More specifically, the fixed part (140) includes a vertical plate (141), as shown in FIG. 7.

Here, the vertical plate (141) is characterized in that it is formed to separate the buoyancy tank (110) from the seabed by a predetermined height.

In addition, the vertical plates (141) are provided in multiple numbers and are formed to intersect each other, so that a space (SS) is formed between each vertical plate (141).

Accordingly, the multi-line anchor station structure for a floating offshore wind power plant of the present invention includes a vertical plate (141) that forms a separation space while spacing a buoyancy tank apart from the seabed by a predetermined height, so that the vertical plate is vertically pressed on the seabed and digs into the sand to be fixed, and sand on the seabed flows into the separation space, thereby providing an effect of increasing the frictional force between the anchor station and the seabed.

In addition, by including vertical plates (141) that are formed to intersect each other and form a separation space, it provides the effect of preventing the anchor station from tilting due to foreign substances such as rocks and stones when the anchor station comes into contact with the seabed.

Next, with reference to FIGS. 6, 8, and 9, a concrete injection part (150) constituting a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention will be described in more detail.

FIG. 6 is a perspective view showing the exterior of an anchor station constituting a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention, as described above, and FIG. 8 is a front perspective view showing an anchor station of a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention.

In addition, Fig. 9a is a drawing showing an example of a state in which concrete injected through a concrete injection part is poured onto the inner wall of a buoyancy tank, and Fig. 9b is a drawing showing an example of a state in which concrete injected through a concrete injection part is poured onto the bottom surface of a buoyancy tank.

First, the concrete injection part (150) is formed on the upper part of the anchor station (100) so that concrete is injected and poured from the outside into the interior of the anchor station while the anchor station (100) is floating on the sea, as described above.

Accordingly, the multi-line anchor station structure for a floating offshore wind power plant of the present invention includes a concrete injection part (150), so that concrete can be injected and poured into the interior of the anchor station while the anchor station is floating on the sea after being launched, thereby significantly reducing the weight of the anchor station when it is launched, thereby providing the effect of significantly reducing required manpower, equipment, time, and resulting costs.

More specifically, concrete injected through the concrete injection part (140) can be poured into the buoyancy tank (110) to form a height (H1), as shown in FIG. 8.

In addition, seawater flowing in through the seawater inlet (120) connected to the hollow portion (111) can flow in up to the remaining height (H2) excluding the height (H1) at which concrete is poured within the buoyancy tank (110).

Accordingly, the height formed by seawater flowing in through the seawater inlet (120) can be adjusted within the maximum height (H2) according to the sea environment and weather conditions so that the anchor station (100) can be lifted and moved while floating stably on the sea.

In addition, after the anchor station (100) is formed with a freeboard (H4) of a certain height after concrete is poured into the buoyancy tank (110), i.e. after it becomes a finished product, the anchor station (100) can be completely submerged by allowing seawater to flow in at a height (H3) equal to the freeboard (H4).

For example, when the valve described above is operated to install the anchor station (100) on the seabed and seawater is introduced into the buoyancy tank (110) through the seawater inlet (120) to a certain height (H3), the anchor station (100) can be stably submerged as the weight of the buoyancy tank (110) increases.

More specifically, the concrete injection part (150) may be formed in communication with the inner wall of the buoyancy tank so that the injected concrete (C) is poured along the inner wall of the buoyancy tank (110), as shown in FIG. 9a.

Here, by controlling the amount of concrete (C) injected through the concrete injection part (150) and thereby controlling the height at which it is poured on the inner wall of the buoyancy tank (110), the weight and weight of the anchor station (100) can be freely controlled.

As another example, the concrete injection part (150) may be formed in communication with the bottom surface of the buoyancy tank so that the injected concrete (C) spreads and is poured onto the bottom surface of the buoyancy tank (110), as shown in FIG. 9b.

Likewise, by controlling the amount of concrete (C) injected through the concrete injection part (150) and thereby controlling the height at which it is poured on the bottom surface of the buoyancy tank (110), the weight and weight of the anchor station (100) can be freely controlled.

As described above, the multi-line anchor station structure for a floating offshore wind power plant of the present invention provides the effect of being able to freely increase the amount of concrete injected into the buoyancy tank through the formation of a concrete injection portion (150) to suit the weight and weight required for the anchor station.

For example, the buoyancy tank (110) can be configured as a small-sized float, and about 750 tons of concrete can be filled inside the small float to enable a holding force of about 700 tons or more in an area 150 m below the seabed, thereby forming an efficient anchor station structure.

Next, with reference to FIGS. 6 and 10, a mooring line fastening member (160) constituting a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention will be described in more detail.

FIG. 6 is a perspective view showing the appearance of an anchor station constituting a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention, as described above, and FIG. 10 is a drawing showing an example of a state in which an anchor station of a multi-line anchor station structure for a floating offshore wind power plant according to one embodiment of the present invention is constructed.

First, the mooring line fastening part (160) is formed on the outer surface of the anchor station (100) so that a mooring line (not shown) is fastened, as shown in FIG. 6.

More specifically, the above mooring line fastening part (160) is characterized by being formed as many times as the number of mooring lines (not shown) to be fastened.

As shown in Fig. 10, the mooring line (ML) is provided to connect the anchor station (100) and the floating offshore wind turbine (T).

For example, as illustrated in FIG. 10, a plurality of mooring lines (ML, ML1, ML2) may be provided to connect the anchor station (100) and a plurality of floating offshore wind turbines (T, Ta, Tb).

At this time, the mooring lines (ML, ML1, ML2) are connected to the anchor station (100) through the mooring line fastening part.

More specifically, a multi-line anchor station (MAS) for a floating offshore wind power plant can be constructed by connecting the anchor station (100), mooring lines (ML, ML1, ML2) and floating offshore wind power generators (T, Ta, Tb).

As described above, the multi-line anchor station structure for a floating offshore wind power plant of the present invention includes a mooring line fastening member (160), thereby enabling multiple mooring lines to be fastened to a single anchor station to simultaneously connect multiple floating offshore wind power generators, thereby enabling the positions of multiple floating offshore wind power generators to be fixed with a single anchor station. Accordingly, the number of anchors required for installation can be significantly reduced compared to conventional anchor installation methods, thereby providing the effect of reducing installation and construction costs.

Although the present invention has been described above with specific details such as specific components and limited examples and drawings, these have been provided only to help a more general understanding of the present invention, and the present invention is not limited to the above examples, and those with common knowledge in the technical field to which the present invention belongs can make various modifications and variations from this description.

Therefore, the idea of the present invention should not be limited to the embodiments described above, and not only the claims described below but also all modifications equivalent to or equivalent to the claims are included in the scope of the idea of the present invention.

100: Anchor Station 110: Buoyancy Tank
111: Hollow 111a: Lower space
111b: Upper space 111c: First space
111d: 2nd space 111e: 3rd space
111f: 4th space 112: Compartment
113: 1st frame 114: 2nd frame
120: Seawater inlet 121: Inlet pipe
122: Inlet port 130: Valve
140: Fixed part 141: Vertical plate
150: Concrete injection part 160: Mooring line connection part
C: Concrete
MAS: Multi-line anchor station for floating offshore wind power
ML, ML1, ML2: Mooring line SS: Separation space
T, Ta, Tb: floating offshore wind turbine W: seawater

Claims (9)

Includes an anchor station (100) installed on the seabed and equipped to fix the floating position of a floating offshore wind turbine;
The above anchor station (100) is
A buoyancy tank (110) provided with a hollow portion (111) forming an empty space of a predetermined volume inside and a partition portion (112) provided to partition the hollow portion, which is provided to provide buoyancy to the anchor station so that it can float on the sea when moved to the installation location; and
A multi-line anchor station structure for a floating offshore wind power plant, characterized by including a seawater inflow portion (120) formed to communicate with the hollow portion while penetrating the buoyancy tank to introduce seawater into the hollow portion. In paragraph 1,
The above compartment (112) is
A multi-line anchor station structure for a floating offshore wind power plant, characterized in that at least one bulkhead of a predetermined thickness is formed to divide the space of the hollow portion into upper and lower parts. In paragraph 1,
The above compartment (112) is
A multi-line anchor station structure for a floating offshore wind power plant, characterized in that at least one bulkhead of a predetermined thickness is formed to radially divide the space of the above-mentioned hollow portion centered on the seawater inlet. In paragraph 1,
The above anchor station (100) is
A multi-line anchor station structure for a floating offshore wind power plant, characterized by including a valve (130) formed at one or more locations selected from the upper or lower portion of the anchor station and connected to the seawater inlet port to control the amount of seawater flowing into the seawater inlet port from the outside. In paragraph 1,
The above seawater inlet (120) is
An inlet pipe (121) provided at the center of the anchor station to form a passage for seawater to flow in, and having at least one end selected from the upper or lower end open; and
A multi-line anchor station structure for a floating offshore wind power plant, characterized in that it includes a plurality of inlet holes (122) formed on the outer surface of the inlet pipe so that seawater introduced through the inlet pipe is injected into each of the compartmented spaces of the hollow portion, and each inlet hole is connected to each of the compartmented spaces of the hollow portion. In paragraph 1,
The above anchor station (100) is
A multi-line anchor station structure for a floating offshore wind power plant, characterized by including a fixing member (140) formed at the lower portion of the buoyancy tank to support the buoyancy tank and fix it to the seabed, and having a vertical plate (141) formed to separate the buoyancy tank from the seabed by a predetermined height. In paragraph 6,
The above vertical plate (141) is
A multi-line anchor station structure for a floating offshore wind power plant, characterized in that it is provided in multiple numbers and formed to intersect with each other so that a space is formed between each vertical plate. In paragraph 1,
The above anchor station (100) is
A multi-line anchor station structure for a floating offshore wind power plant, characterized by including a concrete injection part (150) formed on the upper part of the anchor station so that concrete is injected and poured into the interior of the anchor station from the outside while floating on the sea. In paragraph 1,
The above anchor station (100) is
A multi-line anchor station structure for a floating offshore wind power plant, characterized by including a mooring line fastening section (160) formed as many times as the number of mooring lines to be fastened, which is provided to fasten mooring lines connecting the anchor station and the floating offshore wind power plant.