KR20220037117A - Offshore wind power generator - Google Patents

Abstract

The present invention relates to an offshore wind power generator. The offshore wind power generator comprises: a column structure composed of multiple hollow support columns spaced apart from each other and supported by a bedrock through a mud layer on the seafloor at lower ends thereof, and a distance-keeping means for keeping a distance between the support columns; a linear anchor device extending in a longitudinal direction from an upper part of the bedrock to be secured to the mud layer after reaching the bedrock down through the inside of each support column during construction of the column structure, thereby providing gripping force to the column structure; and a power generation part generating power by rotated by wind pressure. The offshore wind power generator of the present invention described above has a structure that can be easily installed in an area where a thick mud layer is formed and the water depth is relatively low, so it is good to be applied to the West Sea of Korea. In addition, since the offshore wind power generator is supported by the weight of the mud layer in principle, the generator is hardly affected by the pressure of tides or waves. Moreover, as composed of multiple independent curved columns, the generator can be easily constructed, shorten construction time, and reduce overall maintenance costs.

Description

Offshore wind power generator

The present invention relates to an offshore wind power generator, and more particularly, to an offshore wind power generator that has a thick mud layer on the seabed rock layer, has a structure suitable for a region with a relatively low water depth, is simple in construction, and can shorten construction time. It is about the generator.

Various studies and attempts have already been made to solve the problems of air pollution, global warming, and climate change caused by the increase in the use of fossil fuels. Most of these studies are related to the development of eco-friendly clean energy sources that replace fossil fuels. Eco-friendly energy sources include, for example, solar heat, solar power, wind power, tidal power, hydro power, and geothermal energy.

Among the above-mentioned various energy sources, wind power has a characteristic that it is possible to harvest energy in a wide area regardless of inland or sea and does not generate by-products. A wind power generator for generating electric power using wind power has a basic principle of converting flow energy of air according to a pressure difference into mechanical energy, and using the mechanical energy to turn a generator to obtain electric power.

In the early days, wind power generators have been mainly installed on land, but recently, offshore installations are increasing. The reason is that offshore wind quality is generally good, civil complaints due to operating noise do not occur, and it is easy to create large-scale wind farms to secure economic feasibility of wind power generation.

Wind power generators installed onshore are divided into fixed and floating types. The fixed type is a method in which a pile is driven into the seabed bedrock layer to fix it, and the structure is supported on the pile. However, the fixed power generation device has a disadvantage in that the size of the structure becomes very large as the depth of the water increases, and the cost required for manufacturing and installation of the structure increases significantly, thereby reducing economic efficiency.

In contrast, the floating power generator maintains the tension of the mooring device and floats on the sea level, and has the advantage that the size of the structure is not limited even if the water depth increases. However, it is greatly affected by currents or waves, and there is a problem that damage such as cutting occurs frequently, and the cost of maintenance and management increases.

As a background technology related to an offshore wind power generator, Korean Patent Registration No. 10-1342138 (offshore wind power generator and its installation method) has been disclosed. The disclosed offshore wind power generation device comprises a substructure fixed to the seabed, a tower installed on the upper end of the substructure, a nacelle installed on the upper part of the tower, and a blade mounted on the nacelle, The lower end of the tower is hinged to the upper end of the substructure to be rotatably provided in the lower structure, a buoyancy space is formed inside the tower, and a sealing member for sealing the interior of the tower is installed at the upper and lower portions of the tower, the tower And the substructure assembly has a configuration that is provided to be floating in the sea.

Domestic Patent Publication No. 10-1342138 (Offshore wind power generation device and its installation method) Domestic Patent Publication No. 10-2134996 (Floating Offshore Wind Power System)

The present invention was created to solve the above problems, and it is good to apply to the West Sea of Korea, is hardly affected by the pressure of currents or waves, is simple to construct and can shorten the construction time, and the overall maintenance cost is low. , an object of the present invention is to provide an offshore wind power generator.

The offshore wind power generator of the present invention as a means of solving the problem for achieving the above object, a plurality of hollow support pillars, the lower end of which is supported on the bedrock and spaced apart from each other through the seafloor mud layer, and maintaining the spacing between the support pillars a column structure provided with a spacing maintaining means; A linear anchor device that passes downward through the inside of each support column to reach the bedrock during construction of the columnar structure, extends in the longitudinal direction from the upper portion of the bedrock, and is embedded and fixed in the mud layer to provide a paving force to the columnar structure; It is installed on the upper side of the column structure, and includes a power generation unit for generating electricity by rotating by wind pressure.

In addition, another offshore wind power generator of the present invention as a means of solving the problem for achieving the above object, a plurality of hollow support pillars and a plurality of hollow support pillars spaced apart from each other and the lower end is supported on the bed through the seafloor mud layer, the support pillar a column structure provided with a gap maintaining means for maintaining a gap; When the column structure is constructed, it passes downward through the inside of each support column to reach the bedrock, then extends in the longitudinal direction and is inserted and fixed in the excavation hole pre-drilled in the bedrock, thereby providing a cruising force to the columnar structure. Wow; It is installed on the upper side of the pillar structure, and has a power generation unit that rotates by wind pressure to produce electric power.

In addition, the support pillar; A through-hole providing a passage through which the linear anchor device can exit to the outside of the support column, and a linear anchor device at the lower end of each support column, maintaining a radially spread state with respect to the vertical central axis of the column structure toward the lower part; A guide inclined plate is provided to guide the through hole.

In addition, the pillar structure is further provided with a center column extending vertically between the supporting pillars and fixed by the spacing maintaining means.

In addition, the linear anchor device; It includes a plurality of unit anchors connected in series in the longitudinal direction, extended in the mud layer by an external force and then stretched to the rear and fixed to the mud layer, wherein the unit anchors include; A body having a through passage formed through in a direction orthogonal to the traveling direction of the linear anchor device, a body having a connection groove formed at the rear of the through passage and open to the rear, a round-bar-shaped extension fixed to the front end of the body in the traveling direction; A head integrally formed with the end of the extension and having a locking part inserted into the connecting groove of the preceding unit anchor to maintain the combined state of the unit anchor, the head installed in the connecting groove and inserted into the connecting groove forward A spring for elastic support, is installed so as to be rotatable through connection pins on both sides of the body, and maintains a folded state when the unit anchor moves forward, and a plurality of locking wings that are caught in the mud when retreating, and the locking wings and an in-between angle limiting part for limiting the maximum unfolding angle of the .

In addition, two of the locking blades are symmetrically disposed on opposite sides with the body at the center, and the angle limiting portion has a wire accommodated in the through hole and both ends are fixed to the locking blade.

In addition, the unit anchor located at the rear end of the linear anchor device maintains a state fixed by a hanger pin in a state accommodated in the interior of the support column.

In addition, the linear anchor device; A plurality of unit anchors that are extended and fixed in the excavation hole when pulled rearward after entering the excavation hole by external force in a serially connected state in the longitudinal direction, wherein the unit anchors include; A body having an inner space open to the front and rear in the moving direction and having a side passage on both sides for opening the inner space to the side, a movable block installed so as to be able to adjust the position in the front and rear directions in the inner space of the body, in each of the side passages It is connected through a support pin to be rotatable around the support pin, and a toothed part is formed on the outer side, and one end is linked to the movable block and a locking wing that spreads according to the rear movement of the movable block, passes through the body and in the body It has a tension wire that is coupled to the movable block and is tensioned by an external force to move the movable block rearward so that the locking wing is unfolded.

And, the power generation unit is a horizontal axis wind power generator or a vertical axis wind power generator.

In addition, the power generation unit; A lifting-type stator installed so as to be liftable on the column structure, a ring-type rotor rotatable while surrounding the lifting-type stator, a plurality of support arms fixed to the ring-type rotor and extending in a longitudinal direction, and the support arms As a ring-shaped member coupled to the extended end of the elevating type stator, and a support ring positioned horizontally on the upper and lower portions of the elevating stator, and vertically installed on the support ring, elastically deformable to rotate the ring-type rotor by receiving wind pressure of the sea breeze It is a vertical axis wind power generator provided with a plurality of blades and a support means installed between the support ring and the blades to elastically support the blades.

The blade has a predetermined cross-sectional shape in the vertical direction and provides an internal space open up and down through an end hole, the support means; An entry rod fixed to the support ring and entering the inner space of the blade through an end hole, and a supporter having a rotation preventing head fixed to the end of the entry rod and preventing the rotation of the blade, and installed inside the blade It has a buffer spring that is in contact with the contact head and is elastically deformed when the blade is bent by wind pressure.

The offshore wind power generator of the present invention made as described above has a thick mud layer and has a structure that can be easily installed in an area with a relatively low water depth, so it is good to be applied to the Southwest Sea of Korea.

In addition, since it has a principle supported by the weight of the mud layer, it is hardly affected by the pressure of currents or waves.

And, it is composed of a combination of a plurality of independent pillars, so the construction is simple, the construction time can be shortened, and the overall maintenance cost is low.

1 is a side view schematically showing an offshore wind power generator according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 .
3 is a view for explaining a modified example of the offshore wind power generator according to an embodiment of the present invention.
FIG. 4 is a cross-sectional view taken along line BB of FIG. 3 .
5 and 6 are views for explaining the configuration and operating principle of the linear anchor device shown in FIG.
7 is a view for explaining another example of an offshore wind power generator according to an embodiment of the present invention.
8 is a side view showing a modified example of the offshore wind power generator of FIG.
9a, 9b, and 9c are diagrams for explaining the principle of elastic deformation of the blades in the vertical axis generator shown in FIGS. 7 and 8 .
10 is a view showing the mounting state of another type of linear anchor device applicable to the offshore wind power generator according to an embodiment of the present invention.
11 and 12 are views for explaining the detailed configuration and operation of the linear anchor device shown in FIG.

Hereinafter, one embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

Basically, the offshore wind power generator of the present invention has a structure optimized for the low-depth sea of the Southwest Sea of Korea, and the lower end passes through the seafloor mud layer and is supported on the bedrock and is spaced apart from each other. a column structure provided with a gap maintaining means for maintaining the distance between the support columns; A linear anchor device that passes downward through the inside of each support column to reach the bedrock during construction of the columnar structure, extends in the longitudinal direction from the upper portion of the bedrock, and is embedded and fixed in the mud layer to provide a paving force to the columnar structure; It is installed on the upper side of the pillar structure, and has a basic structure of a power generation unit that rotates by wind pressure to produce electric power.

In addition, the lower end is supported on the bedrock through the subsea mud layer and a plurality of hollow support columns spaced apart from each other, and a column structure provided with a gap maintaining means for maintaining the distance between the support columns; When the column structure is constructed, it passes downward through the inside of each support column to reach the bedrock, then extends in the longitudinal direction and is inserted and fixed in the excavation hole pre-drilled in the bedrock, thereby providing a cruising force to the columnar structure. Wow; It is installed on the upper side of the pillar structure, it may include a power generation unit for generating power by rotating by wind pressure.

1 is a side view schematically showing an offshore wind power generator 10 according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 .

As shown, the offshore wind power generator 10 according to this embodiment is configured to include a column structure 20 , a linear anchor device 50 , and a horizontal axis wind power generator 30 .

The column structure 20 is erected on the seabed rock 101 and supports the horizontal axis wind power generator 30 . The column structure 20 has three support columns 23 and one center column 21, and a space maintaining means. The number of applications of the supporting pillars 23 may vary, for example, four or five or more supporting pillars 23 may be applied. In addition, the diameter or height of the support column 23 may vary.

The support column 23 takes the form of a hollow pipe having a certain diameter, and as it goes to the lower part, it takes a shape that is spread in a radial direction with respect to the vertical central axis of the column structure 20 . That is, the upper end of the support column 23 is inclined to the vertical central axis of the column structure (20). The vertical central axis means a virtual vertical axis perpendicular to the ground.

The lower end of each support column 23 passes downward through the mud layer 103 to reach the bedrock 101 . In addition, a through hole 23e and a guide swash plate 23f are provided at the lower end of the support column 23 .

The through hole 23e is a hole open in the lateral direction of the support column 23, and serves as a passage through which the linear anchor device 50 input from the top can exit to the outside of the support column during construction.

In addition, the guide swash plate 23f is a swash plate fixed to the inside of the support column 23, and serves to guide the linear anchor device 50 descending to the lower portion to the through hole 23e. The linear anchor device 50 descending from the upper part of each support post 23 is twisted into the through hole 23e by the guide inclined plate 23f, and then advances into the mud layer 103 through the through hole.

The number of the support pillars 23 may be variously changed as long as the horizontal axis wind power generator 30 can be stably supported. As mentioned above, the number of four, five or more may be applied.

The support posts 23 are tied and fixed through a gap maintaining means in a state spaced apart from each other. The spacing means is for maintaining a constant spacing of the plurality of support pillars 23, and the shape thereof is very diverse as long as the spacing of the support pillars can be stably maintained. The spacing maintaining means in this embodiment is a horizontal fixed platform (25).

The fixing platform 25 is, so to speak, a plate-like member taking the form of a disk, and the support column 23 is passed through it in the thickness direction. Of course, a hole (no reference numeral) for passing the support column 23 is formed in the fixing platform 25 . The number of applications of the fixed platform 25 may vary depending on the embodiment.

In this way, since the plurality of support pillars 23 can be bundled and fixed with the fixing platform 25 (having the same configuration and different sizes), the construction is very simple and the construction time is short.

The center column 21 is a pipe-like member having a predetermined diameter and erected vertically, and is located in the center between the support pillars 23 . The center column 21 is coupled to the fixed platform 25 while passing through the center of each fixed platform 25 .

The horizontal axis wind power generator 30 is installed at the upper end of the center column 21 . The horizontal axis wind power generator 30 has a power generation unit 31 in which a generator (not shown) is built-in, a hub 33 rotatably installed in front of the power generation unit, and a blade 35 fixed to the hub. The horizontal axis wind power generator 30 is a general one, and a description thereof will be omitted. In addition, a power facility 36 such as a transformer for processing power generated by the horizontal axis wind power generator 30 is built in the center column 21 .

On the other hand, the linear anchor device 50, by providing a wave force to the column structure 20, so that the column structure 20 can stand stably on the bedrock (101).

The linear anchor device 50 is, at the time of construction of the column structure 20, input through the upper end of each support column 23, and then passes downward through the support column inside the support column 23 through the through hole 23e. After being pushed out to the outside, it extends in the longitudinal direction from the upper portion of the bedrock 101 and is embedded in the lower portion of the mud layer 103 to fix the columnar structure 20 .

This linear anchor device 50 has the structure shown in Figs.

5 and 6 are partial views of the linear anchor device for explaining the configuration and operating principle of the linear anchor device 50 shown in FIG. 5 is a view when the linear anchor device 50 advances inside the mud layer 103, and FIG. 6 is a view when it is pulled back.

The linear anchor device 50 includes a plurality of unit anchors that are connected in series in the longitudinal direction and are spread out and fixed in the mud layer when stretched rearward in a state in which they are advanced in the mud layer by an external force. The structure of each unit anchor is the same, and each unit anchor 51 is extended in a state of being connected back and forth, and refraction is possible within a certain angle range. That is, the preceding unit anchor 51 and the unit anchor 51 connected immediately behind it can be bent within a certain angle range.

The angle of refraction, when the linear anchor device 50 proceeds in the direction of the arrow F, is sufficient enough to bypass or cross the protrusion of the upper surface of the bedrock 101. For example, it may be an angle of 45 degrees or less.

As shown, the unit anchor 51 includes a body 51a, a head 51p, a spring 57, a pair of locking blades 53, and an angle limiting part between them.

The body 51a is made of metal and has a cylindrical shape having an approximately constant diameter, and has a wing groove 51b, a through-path 51e, a connection groove 51f, and a locking protrusion 51h.

The wing groove 51b is a groove formed on both sides of the body 51b and partially accommodates the locking blade 53 . The locking wing 53 is installed inside the wing groove 51b through the connecting pin 53a, and rotates in the direction of the arrow a to be opened or folded in the opposite direction. The locking wing 53 has a free end protruding to the outside of the wing groove (51b) in a fully folded state. Therefore, when the linear anchor device 50 is pulled in the direction of the arrow R, it is easily spread in the direction of the arrow a.

A through passage 51e is provided behind the wing groove 51b. The through passage 51e is a hole through in a direction orthogonal to the traveling direction of the linear anchor device, and accommodates the wire 55 .

The wire 55 is an example of the angle limiting part described above, and both ends are connected to the wire ring 53b of the locking wing 53 . As shown in FIG. 5, the wire 55 waits in a bent state inside the through passage 51e in the state in which the locking blade 53 is folded, and tightens when the locking blade 53 is unfolded in the arrow a direction. It is pulled to limit the unfolding angle of the locking wing 53. The locking wing 53 does not spread more than the angle set by the wire 55 . The angle between the angles is 180 degrees or less. However, by adjusting the length of the wire 55, the angle between the maximum spread of the locking wing 53 can be adjusted as much as possible.

The connection groove 51f is a space opened rearwardly through the opening 51g and has a locking protrusion 51h inside the opening 51g. The connection groove (51f) accommodates the engaging portion (51m) of the rear unit anchor (51). For example, the engaging portion 51m of the rear unit anchor 51 among the two unit anchors positioned front and back is inserted into the connection groove 51f.

The head 51p includes a round-bar extension portion 51k fixed to the front end of the body 51a, and a locking portion 51m integrally formed with the end portion of the extension portion. The locking part 51m takes the shape of a sphere and is inserted into the connection groove 51f. The diameter of the locking portion 51m is larger than the inner diameter of the opening 51g.

The spring 57 elastically supports the locking part 51m in the direction of the arrow c in a state of being sandwiched between the locking part 51m and the locking jaw 51h. Due to the action of the spring 57, there is no damage to the parts even when an impact is applied to the linear anchor device 50.

The linear anchor device 50 having the above configuration is introduced into the support column 23 from the upper end of each support column 23 and moves downward. The input operation of the linear anchor device 50 is to move by the calculated distance along the upper surface of the bedrock 101 after the unit anchor 51 located at the tip of the linear anchor device 50 exits the support column 23 . continues until The calculated distance means that the sum of the maximum lifting force that can be provided by all the unit anchors 51 exposed from the support column 23 is at least a force greater than the force that can firmly support the wind power generator 10 . is the distance until

In any case, when the front end of the linear anchoring device 50 has protruded from the support column 23 by a sufficient length, the rear end of the linear anchoring device 50 is pulled up using the tensioning device 41 . The tension device 41 is equipment installed at the upper end of the support column 23 and pulls up the unit anchor 51 located at the rearmost of the linear anchor devices 50 . When the lifting device 41 pulls up the linear anchor device 50 , each unit anchor 51 moves in the arrow R direction of FIG. 6 , and the locking wing 53 is unfolded. As the locking blade 53 is unfolded, the linear anchor device 50 is no longer pulled up. The construction of the column structure 20 is completed.

When the above process is completed, remove the locking wing 53 of the unit anchor 51 at the rear (the unit anchor 51 located at the uppermost in the support column 23 in the drawing) and insert it into the through passage 51e. The hanger pin 43 is inserted and fixed.

The above-mentioned linear anchor device 50 may be applied in one line within one support post 23, and if more powerful breaking force is required, two or more may be applied.

FIG. 3 is a view for explaining a modified example of the offshore wind power generator 10 according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3 .

Hereinafter, the same reference numerals as the above reference numerals indicate the same members having the same function.

The pillar structure 20 shown in FIG. 3 is a type in which the center column (21 in FIG. 1) is omitted, and the support pillar 23 directly supports the horizontal axis wind power generator 30. As shown in FIG. By omitting the center column 21, the structure of the column structure 20 becomes simpler, so that rapid construction is possible at a low cost. The power facility 36 may be disposed on the most easily accessible fixed platform 25 among the plurality of fixed platforms 25 .

7 is a view for explaining another example of the offshore wind power generator 10 according to an embodiment of the present invention.

As shown, the vertical axis wind power generator 60 is installed at the upper end of the center column 21 of the column structure 20 . The wind power generator 60 includes a bearing unit 63 mounted on the center column 21 , a plurality of support arms 62 fixed to the bearing unit 63 and extending in the longitudinal direction, and extended ends of the support arms 62 . It includes a support ring 61 coupled to the support ring 61, a plurality of blades 65 vertically fixed to the support ring 61, and support means.

The bearing unit 63 prevents the shaking of the axis of rotation of the wind power generator 60 when the vertical axis wind power generator 60 rotates, and rotates while surrounding the outer circumferential surface of the center column 21 .

The support arm 62 extends radially with one end fixed to the bearing unit 63 and has a support ring 61 at the extended end. The support ring 61 is a ring-shaped member having a certain diameter, which is horizontally positioned on the upper and lower portions of the bearing unit 63 , and supports upper and lower ends of each blade 65 .

The blade 65 is a rotating blade extending vertically and has a predetermined cross-sectional shape in the extending direction, and rotates the support ring 61 by receiving wind pressure. The vertical axis wind power generator 60 is rotated by the wind pressure applied to the blade 65 . The power generated by the wind power generator 60 is transmitted to the power facility 36 . Since the power generation method of the vertical axis wind power generator 60 itself is general, a description thereof will be omitted. The power generated by the wind power generator 60 is transmitted to the power equipment 36 .

The support means is installed between the blade 65 and the support ring 61 and serves to elastically support the blade 65 .

The structure and operation of the support means will be described with reference to FIGS. 9A, 9B and 9C. Figure 9a is a view showing the internal structure of the blade in the vertical axis wind turbine generator 60, Figure 9b is a view showing a state in which the blade 65 is elastically deformed. Also, FIG. 9C is a cross-sectional view taken along line D-D of FIG. 9A.

As shown, the blade 65 has a predetermined cross-sectional shape in the vertical direction and provides an inner space 65a opened up and down through the end hole 65c. The cross-sectional shape of the blade 65 is similar to that of an aircraft wing, as shown in FIG. 9C . The blade 65 is made of a material that can be elastically deformed by an external force. Since the shape of the blade is general, a description thereof will be omitted. In addition, a step 65e is formed at the upper and lower ends of the blade 65 .

The support means includes a supporter (66) and a buffer spring (67). The basic role of the support means is to support the blade 65 vertically, but to induce the blade 65 elastically deformed by a strong wind to be restored more quickly.

The supporter 66 is fixed to the support ring 61 and the entry rod 66b inserted into the blade inner space 65a through the end hole 65c, and the anti-rotation head 66a fixed to the end of the entry rod has The rotation prevention head 66a prevents rotation of the blade 65 itself (axial rotation using the entry rod 66b as a rotation axis) in a state accommodated in the inside of the blade 65, as shown in FIG. 9c.

The buffer spring 67 is fitted between the anti-rotation head (66a) and the step (65e), and when the blade is bent by wind pressure, one side is compressed and crushed, and the other side is stretched. In other words, the pitch of the coil constituting the buffer spring 67 is narrowed on one side and stretched on one side. The spring tries to get out of the crushed state by its own elastic restoring force. That is, to provide a force to restore the blade 65 to the vertical again.

As a result, even if the blade 65 is elastically deformed by a strong wind and bent to one side, it can be restored more quickly by the action of the support means.

8 is a side view showing a modified example of the offshore wind power generator 10 of FIG. The columnar structure 20 shown in FIG. 8 is the same as the columnar structure described with reference to FIG. 3 .

The vertical axis wind power generator 60 applied to the offshore wind power generator 10 of FIG. 8 can be lifted in a state supported by the support pillar 23 . The vertical axis wind power generator 60 includes a lifting-type stator 68 , a ring-type rotor 69 , a support arm 62 , a support ring 61 , a blade 65 , and support means.

The elevating stator 68 has a coil (not shown) wound around an outer circumferential surface, and can be elevated while being supported by the support pillar 23 . In addition, the ring-shaped rotor 69 is a ring-shaped member surrounding the elevating-type stator 68 is provided with a magnet (not shown) on the inner peripheral surface. The coils and magnets have the same arrangement and operation as coils and magnets in a general generator.

Since the vertical axis wind power generator 60 having the above configuration can ascend and descend, for example, when a typhoon blows and there is concern about damage, or when there is no wind and there is no wind to generate electricity with the power of a tide, it completely descends to the lower part of the sea level 105 . can do it

10 is a view showing the mounting state of another type of linear anchor device 70 that can be applied to the offshore wind power generator 10 according to an embodiment of the present invention, FIGS. 11 and 12 are shown in FIG. It is a view for explaining the detailed configuration and operation of the linear anchor device 70 shown.

The linear anchor device 70 shown in FIG. 10 is of the type used when the layered thickness of the mud layer 103 is thin and cannot press the linear anchor device 50 of FIG. 2 with sufficient pressure. In order to apply the linear anchor device 70, the excavation hole 101a must be pre-drilled in the bedrock 101. For reference, it is a relatively simple operation to drill the excavation hole (101a) in the bedrock 101 at a low water depth.

As shown, the linear anchor device 70 passes downward through the inside of each support column 23 constituting the column structure 20 to reach the bedrock, and then extends in the longitudinal direction and is pre-drilled in the bedrock. The ball 101a is inserted and fixed. The linear anchor device 70 is fixed to the inside of the excavation hole 101a, thereby providing a digging force to the column structure.

The linear anchor device 70 is input through the upper end of the support column 23 and moves to the lower part, and a part thereof enters the inside of the excavation hole 101a and moves in the direction of the arrow F in FIG. 11 . This linear anchor device 70, in a longitudinally connected state in series, enters the inside of the excavation hole by external force and then expands when pulled back and includes a plurality of unit anchors 71 fixed in the excavation hole 101a. . The guide swash plate 23f or the through hole 23e is not applied to the support column 23 for constructing the linear anchor device 70.

The unit anchor 71 includes a body 72 , a movable block 75 , a locking blade 73 , and a tension wire 76 .

The body 72 has a cylindrical shape and has an inner space 72b. The inner space 72b is a space for accommodating the movable block 75, and is opened to the front through the front central passage 72a, to both sides through the side passage 72c, and to the rear.

The movable block 75 bites the tension wire 76 as a member installed so as to be able to adjust the position in the front and rear directions in the inner space 72b of the body. As the movable block 75 pulls the tension wire 76 in the direction of the arrow R, it follows the rear in the inner space 72b, and expands the locking blade 73 in the direction of the arrow m.

The locking blade 73 is a member that is connected to each side passage through a support pin 73b and is rotatable in the direction of the arrow m or the opposite direction around the support pin, the outer surface, that is, the inner wall surface of the excavation hole 101a. It has a toothed portion (73a) on the surface facing the. The toothed part (73a) is a part that presses the inner wall surface of the excavation hole.

In addition, a long hole 73e is formed at one end of the locking blade 73, and a link pin 75a is inserted into the long hole. The link pin 75a is a part connecting the locking blade 73 and the movable block 75, and is coupled to the movable block 75 while being inserted into the long hole 73e.

The tension wire 76 extends in the longitudinal direction through the inner space 72b and the front central passage 72a of each unit anchor 71, and is coupled to the movable block in each body. When the tension wire 76 is pulled in the direction of the arrow R using the tension device 41 (after the setting of the linear anchor device 70 is completed), the movable block is moved rearward so that the locking blade is spread in the direction of the arrow m. . As the locking wing 73 is deployed, the unit anchor 71 is fixed in the excavation hole 101a to provide a digging force, of course.

As mentioned above, although the present invention has been described in detail through specific embodiments, the present invention is not limited to the above embodiments, and various modifications are possible by those of ordinary skill within the scope of the technical spirit of the present invention.

10: wind power generator 20: column structure 21: center column
23: support column 23e: through hole 23f: guide swash plate
25: fixed platform 30: horizontal axis wind power generator 31: power generation unit
33: hub 35: blade 36: power equipment
41: tension device 43: hanger pin 50: linear anchor device
51: unit anchor 51a: body 51b: wing groove
51e: Passage road 51f: Connection groove 51g: Open hole
51h: Clamping jaw 51k: Extension 51m: Clamping part
51p: Head 53: Locking wing 53a: Connection pin
53b: wire hook 55: wire 57: spring
60: vertical axis wind generator 61: support ring 62: support arm
63: bearing unit 65: blade 65a: inner space
65c: End hole 65e: Step 66: Supporter
66a: anti-rotation head 66b: entry rod 67: buffer spring
68: elevating stator 69: ring-type rotor 70: linear anchor device
71: unit anchor 72: body 72a: front central passage
72b: inner space 72c: side passage 73: locking wing
73a: toothed part 73b: support pin 73e: long hole
75: movable block 75a: link pin 76: tensile wire
101: bedrock 101a: excavation hole 103: mud layer
105: sea level

Claims (12)

a column structure provided with a plurality of hollow support pillars whose lower end passes through the seabed mud layer and is supported on the rock and is spaced apart from each other, and a gap maintaining means for maintaining the spacing between the support pillars;
A linear anchor device that passes through the inside of each support column downward to reach the bedrock during construction of the columnar structure, extends in the longitudinal direction from the upper portion of the bedrock, and is embedded and fixed in the mud layer to provide a paving force to the columnar structure;
It is installed on the upper side of the pillar structure, including a power generation unit for generating electricity by rotating by wind pressure,
Offshore wind turbines. a column structure provided with a plurality of hollow support pillars whose lower end passes through the seabed mud layer and is supported on the rock and is spaced apart from each other, and a gap maintaining means for maintaining the spacing between the support pillars;
When the column structure is constructed, it passes downward through the inside of each support column to reach the bedrock, then extends in the longitudinal direction and is inserted and fixed into the excavation hole pre-drilled in the bedrock, so that the linear anchor device provides a cruising force to the column structure. Wow;
It is installed on the upper side of the column structure, and has a power generation unit that rotates by wind pressure to produce electricity,
Offshore wind turbines. According to claim 1,
The support pillar is;
As it goes to the bottom, it maintains a radially spread state with respect to the vertical central axis of the column structure,
At the lower end of each support column, a through hole providing a passage through which the linear anchor device can exit to the outside of the support column, and a guide sloping plate for guiding the linear anchor device to the through hole are provided,
Offshore wind turbines. 3. The method of claim 2,
The support pillar is;
It is fixed by the gap maintaining means in a state that is spread in the radial direction with respect to the vertical central axis of the column structure toward the lower part,
Offshore wind turbines. 5. The method according to claim 3 or 4,
In the column structure,
A center column extending vertically between the support pillars and fixed by the gap maintaining means is further provided,
Offshore wind turbines. 4. The method of claim 3,
The linear anchor device;
It includes a plurality of unit anchors connected in series in the longitudinal direction and fixed to the mud layer by spreading out and fixed to the mud layer when it is stretched backward after advancing in the mud layer by an external force,
The unit anchor is;
A body having a through passage formed through it in a direction orthogonal to the traveling direction of the linear anchor device, and a connecting groove formed in the rear of the through passage and opened to the rear;
A head having a round bar-shaped extension fixed to the front end of the body, and a locking portion integrally formed with the end of the extension and inserted into the connection groove of the preceding unit anchor to maintain the combined state of the unit anchor;
A spring installed inside the connection groove and elastically supporting the head part inserted into the connection groove forward;
A plurality of locking wings that are rotatably installed on both sides of the body through connection pins, maintain a folded state when the unit anchor advances, and spread out by hanging on the mud when retreating;
Having an angle limiting part for limiting the maximum unfolding angle of the locking wing,
Offshore wind turbines. 7. The method of claim 6,
The locking wings are arranged symmetrically on opposite sides with the body in the center,
The angle limiting part,
Having a wire accommodated in the through hole and fixed at both ends to the locking wing,
Offshore wind turbines. 7. The method of claim 6,
The unit anchor located at the rear end of the linear anchor device maintains a fixed state by a hanger pin in a state accommodated in the interior of the support column,
Offshore wind turbines. 5. The method of claim 4,
The linear anchor device;
Including a plurality of unit anchors fixed in the excavation hole by expanding when pulled backward after entering into the excavation hole by external force in a serially connected state in the longitudinal direction,
The unit anchor is;
A body having an inner space open to the front and rear in the moving direction and having a side passage on both sides for opening the inner space to the side;
A movable block installed in the inner space of the body so that the position can be adjusted in the front and rear directions;
A locking blade connected to each side passage through a support pin to be rotatable about the support pin, a toothed portion is formed on the outer side, and one end is linked to the movable block and spreads according to the rear movement of the movable block;
Having a tension wire that penetrates through the body and is coupled to the movable block in the body, and is tensioned by an external force to move the movable block rearward so that the locking wing is unfolded,
Offshore wind turbines. 3. The method of claim 1 or 2,
The power generation unit is a horizontal axis wind power generator or a vertical axis wind power generator,
Offshore wind turbines. 11. The method of claim 10,
The power generation unit;
an elevating type stator installed so as to be elevating on the column structure;
A ring-type rotor capable of being rotated while surrounding the elevating-type stator, and
a plurality of support arms fixed to the ring-shaped rotor and extending in the longitudinal direction;
a ring-shaped member coupled to the extended end of the support arm, and a support ring positioned horizontally on upper and lower portions of the elevating-type stator;
A plurality of elastically deformable blades installed vertically on the support ring and rotating the ring-type rotor by receiving wind pressure of the sea breeze;
A vertical axis wind power generator installed between the support ring and the blade and having a support means for elastically supporting the blade,
Offshore wind turbines. 12. The method of claim 11,
The blade has a predetermined cross-sectional shape in the vertical direction and provides an internal space open up and down through the end hole,
The support means;
An entry rod fixed to the support ring and entering the inner space of the blade through an end hole, and a supporter having a rotation preventing head fixed to the end of the entry rod and preventing rotation of the blade;
Having a buffer spring that is in contact with the contact head in a state installed inside the blade and is elastically deformed when the blade is bent by wind pressure,
Offshore wind turbines.

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