CN115977887A - Modularized floating foundation and fan - Google Patents

Abstract

The embodiment of the application provides a modularization floats formula basis and fan. The modular floating foundation is connected to the side of the bottom of the tower of the wind turbine. The modular floating foundation includes a plurality of standard buoyant modules and a plurality of connecting structures. A plurality of standard floating body modules are connected in sequence to form a polygon. And two adjacent standard floating body modules at each corner of the polygon are connected through a connecting structural member, wherein the tower is connected to the connecting structural member at one corner of the polygon. This application can reduce and make the threshold, reduces pier occupation time.

Description

Modularized floating foundation and fan

Technical Field

The embodiment of the application relates to the technical field of wind power generation, in particular to a modularized floating foundation and a fan.

Background

With the gradual depletion of energy sources such as coal and petroleum, human beings increasingly pay more attention to the utilization of renewable energy sources. Wind energy is increasingly gaining attention as a clean renewable energy source in all countries of the world. With the continuous development of wind power technology, the application of wind generating sets in power systems is increasing day by day. The wind turbine is a large-scale device for converting wind energy into electric energy, and is generally arranged in areas with rich wind energy resources.

Because the foundation of the semi-submersible type wind turbine is strong in universality and wide in applicable water depth range, a plurality of floating wind power projects using the semi-submersible type foundation at home and abroad are provided. The overall layout of the semi-submersible floating type fan foundation designed by the mainstream at present adopts a three-upright-column or four-upright-column scheme. The plurality of upright posts are connected with each other through the beam bracket. The existing semi-submersible floating foundation design scheme is mostly based on 5 MW-level fan design, after the fan is large-sized, the diameter of a stand column mainly providing buoyancy is mostly larger than 12m, and a steel cylinder with the size larger than the size needs to be provided with dense structural reinforcements to prevent the buckling damage of the structure. Therefore, a complex welding and construction process is brought, professional technology is needed for long-time operation, a large area of field is occupied for a long time at a wharf for manufacturing and assembling, construction efficiency is low, economical efficiency is poor, and therefore market popularization performance is not achieved.

Disclosure of Invention

An object of the embodiment of the application is to provide a modularization floats formula basis and fan, can reduce and make the threshold, reduces pier occupation time.

One aspect of an embodiment of the present application provides a modular floating foundation that is attached to the side of the bottom of a tower of a wind turbine. The modular floating foundation includes a plurality of standard buoyant modules and a plurality of connecting structures. The plurality of standard floating body modules are connected in sequence to form a polygon. And two adjacent standard floating body modules at each corner of the polygon are connected through the connecting structural members, wherein the tower is connected to the connecting structural members at one corner of the polygon.

Further, each standard floating body module comprises two first floating columns, an upper cross brace bracket and a lower cross brace bracket, the two first floating columns are connected with each other through the upper cross brace bracket and the lower cross brace bracket respectively, and the connecting structural member is connected with each first floating column in the two adjacent standard floating body modules.

Furthermore, a prefabricated groove part is arranged on the first floating upright post, a clamping piece is arranged on the connecting structural member, and the clamping piece is clamped in the prefabricated groove part to connect the first floating upright post with the connecting structural member.

Further, the plurality of connecting structural members include a first connecting structural member which is not connected with the tower and a second connecting structural member which is connected with the tower, the first connecting structural member and the second connecting structural member both have two first matching surfaces, the two first matching surfaces are respectively connected with the two first floating columns correspondingly, and the second connecting structural member also has a tower matching surface which is used for being connected with the tower.

Furthermore, other corners except the corner connected with the tower are also provided with second floating columns, the first connecting component is also provided with a second matching surface, and the second matching surface is correspondingly connected with the second floating columns.

Further, the second floating upright column has the same structure as the first floating upright column.

Furthermore, two first floating columns, the upper cross brace bracket and the lower cross brace bracket in each standard floating body module enclose a rectangular frame, and each standard floating body module further comprises one or more inclined brace brackets arranged in the rectangular frame.

Furthermore, each standard floating body module comprises two inclined strut supports, one ends of the two inclined strut supports are respectively connected to the middle position of the upper cross strut support, and the other ends of the two inclined strut supports are respectively connected to the positions, close to the lower cross strut support, of the two first floating columns.

Furthermore, each angle of the polygon is also provided with a droop swinging plate, and the droop swinging plates are connected to the bottoms of the first floating upright post and the second floating upright post at the corresponding angle.

And further, a damping reinforcing plate is connected between the lower cross brace brackets of two adjacent standard floating body modules at each corner of the polygon.

Furthermore, be equipped with prefabricated eye plate on the stull support of lower part set up the installation department that has the mounting hole on the damping reinforcing plate, the installation department with prefabricated eye plate passes through bolted connection.

Furthermore, the standard floating body modules comprise three standard floating body modules which are sequentially connected to form a triangle.

Compared with the existing three-upright-column floating foundation, under the condition that the section areas are the same, the diameter of a single floating upright column of a standard floating body module in the modularized floating foundation of the embodiment of the application can be reduced by about 29 percent, the floating upright column is internally reinforced by using fewer structures, and the modularized floating foundation is convenient to process and manufacture. And the standard floating body module can be pre-installed in a factory outside the wharf and then is transported to the wharf and then is assembled by combining a small number of connecting structural members, so that the manufacturing threshold is low, the time for occupying the wharf is short, and the transportation and installation efficiency is high.

The modularization of this application embodiment floats formula basis and connects in the pylon side, and the gravity load that receives pylon and fan can be avoided to the modularization floating formula basis, and the load is not concentrated at the bottom of the tower, and the load transmits the structure more even, and is friendly to the pylon installation.

Another aspect of an embodiment of the present application provides a wind turbine. The wind turbine comprises the modularized floating foundation, a tower and a wind wheel, wherein the modularized floating foundation is connected to the side face of the bottom of the tower, and the wind wheel is installed at the top of the tower.

Drawings

Fig. 1 is a perspective view of a modular floating foundation according to one embodiment of the present application.

FIG. 2 is a top view of a modular floating foundation according to one embodiment of the present application.

Fig. 3 is a side view of a standard buoyant module according to one embodiment of the present application.

Fig. 4 is a schematic view of a first connecting member according to an embodiment of the present application.

Fig. 5 is a perspective view of a modular floating foundation according to another embodiment of the present application.

Figure 6 is a top view of a modular floating foundation according to another embodiment of the present application.

Fig. 7 is an exploded view of a modular floating foundation according to another embodiment of the present application.

Figure 8 is a side view of a standard buoyant body module according to another embodiment of the present application.

Fig. 9 is a schematic view of a first connecting member according to another embodiment of the present application.

Figure 10 is a schematic top view of a connection between a floating riser and a connecting structure according to one embodiment of the present application.

Figure 11 is a side view schematic of a connection between a floating column and a connecting structure according to one embodiment of the present application.

FIG. 12 is a top view of the connection between the lower cross brace bracket and the damper reinforcing plate according to one embodiment of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used in the embodiments of the present application should have the ordinary meaning as understood by those having ordinary skill in the art to which the present application belongs. The use of "first," "second," and similar terms in the description and claims of this application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed after "comprises" or "comprising" is inclusive of the element or item listed after "comprising" or "comprises", and the equivalent thereof, and does not exclude additional elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The embodiment of the application provides a floating formula basis of modularization, through the modular design, can guarantee under the condition of the floating formula fan basis of semi-submerged type overall performance, strengthen market competition from aspects such as building, transportation and equipment by a wide margin.

Fig. 1 and 2 disclose an illustration of a modular floating foundation 1 according to an embodiment of the present application, wherein fig. 1 discloses a schematic perspective view of the modular floating foundation 1 and fig. 2 discloses a top view of the modular floating foundation 1. As shown in fig. 1 and 2, a modular floating foundation 1 according to an embodiment of the present application is attached to the bottom side of a tower 6 of a wind turbine. The modular floating foundation 1 comprises a plurality of standard buoyant modules 10 and a plurality of connecting structural members 20. A plurality of standard floating body modules 10 are connected in sequence to form a polygon. Two adjacent standard buoyant modules 10 at each corner of the polygon are connected by a connecting structural member 20, wherein the tower 6 is connected to the connecting structural member 20 at one of the corners of the polygon.

In some embodiments, the modular floating foundation 1 of the present application includes three standard buoyant modules 10. Three standard floating body modules 10 are connected in sequence to form a triangle.

Fig. 3 discloses a side view of a standard buoyant body module 10 according to one embodiment of the present application. As shown in fig. 3, each standard buoyant module 10 comprises two first floating columns 11, an upper wale bracket 12 and a lower wale bracket 13. The two first floating pillars 11 are connected to each other by upper and lower wale brackets 12 and 13, respectively. Wherein the connecting structural member 20 connects each of the first floating columns 11 of two adjacent standard floating modules 10. The two first floating pillars 11, the upper wale bracket 12 and the lower wale bracket 13 in each standard floating body module 10 enclose a rectangular frame body, and thus, the standard floating body module 10 has a substantially rectangular frame body.

As shown in fig. 1 and 2, each of the floating columns of each two adjacent standard floating body modules 10 is connected by a connecting structural member 20. Thus, as shown in fig. 2, there are two first floating pillars 11 at each corner of the polygon (e.g., the triangle of fig. 2).

In some embodiments, the cross-sectional shape of the first floating pillars 11 of the present application is circular. The first floating upright post 11 is a circular pontoon. The two first floating columns 11 in each standard buoyant module 10 have the same diameter. Of course, the sectional shape of the first floating upright 11 of the present application is not limited to a circle. In other embodiments, the first floating pillar 11 of the present application may also take the shape of a square, a diamond, or other polygon.

The buoyancy and restoring force of the modular floating foundation 1 is mainly provided by the first floating column 11 in a plurality of standard buoyant modules 10. In this embodiment, the buoyancy and restoring force of the modular floating foundation 1 is provided primarily by the six first floating columns 11 in the three standard buoyant modules 10.

The plurality of connecting structure members 20 of the present application include a first connecting structure member 21 that is not connected to the tower 6 and a second connecting structure member 22 that is connected to the tower 6. Fig. 4 discloses a schematic view of a first connecting member 21 according to an embodiment of the present application. As shown in fig. 4, the first connecting member 21 has two first engaging surfaces 211, the two first engaging surfaces 211 are respectively connected to the two first floating pillars 11, and the first engaging surfaces 211 have a shape matching with the outer shape of the first floating pillars 11.

The second connecting structural member 22 is similar to the first connecting member 21, and the second connecting structural member 22 is different from the first connecting member 21 in that the second connecting structural member 22 is required to be connected to the tower 6, so that the second connecting structural member 22 has a tower mating surface (not numbered) for connecting to the tower 6 in addition to two first mating surfaces 211 respectively connected to the two first floating vertical columns 11. Similarly, the tower mating surface has a shape that matches the exterior profile of the tower 6.

Compared with a WindFloat type three-upright-column floating foundation, under the condition that the cross section area is the same, the diameter of a single floating upright column of the standard floating body module 10 in the modularized floating foundation 1 can be reduced by about 29%, and the floating upright column is internally reinforced by less structures, so that the floating upright column is convenient to process and manufacture. And, the standard floating body module 10 can be pre-installed in a factory outside the wharf, and then is transported to the wharf and then assembled with a small number of connecting structural members 20, so that the manufacturing threshold is low, the time for occupying the wharf is short, and the transportation and installation efficiency is high.

The modularization of this application embodiment floats formula basis 1 and connects in 6 sides of pylon, and the gravity load that receives pylon 6 and fan can be avoided to modularization floats formula basis 1, and the load is not concentrated at the bottom of the tower, and the structure is more even in the load transfer, and is friendly to the installation of pylon 6.

Fig. 5-7 disclose illustrations of a modular floating foundation 2 according to another embodiment of the present application, wherein fig. 5 discloses a perspective view of the modular floating foundation 2, fig. 6 discloses a top view of the modular floating foundation 2, and fig. 7 discloses an exploded view of the modular floating foundation 2. Referring to fig. 5 to 7 in combination, unlike the modular floating foundation 1 shown in fig. 1 and 2, in the modular floating foundation 2 shown in fig. 5 to 7, a second floating upright column 30 is additionally provided at the corner of the polygon except the connecting tower 6. A plurality of standard buoyant modules 10 and a second buoyant riser 30 are connected by connecting structural members 20.

In some embodiments, the second floating column 30 may have the same structure as the first floating column 11. Therefore, all the components of the whole modularized floating foundation 2 can be standardized, and the production and the manufacture are convenient.

The buoyancy and restoring force of the modular floating foundation 2 are mainly provided by the first floating column 11 and the additional second floating column 30 of the plurality of standard buoyant modules 10. In this embodiment, the buoyancy and restoring force of the modular floating foundation 2 are provided primarily by six first floating columns 11 and two second floating columns 30 (eight floating columns total) in three standard buoyant modules 10. The additional second floating column 30 serves to upgrade the buoyancy and restoring force of the modular floating foundation 2 with the onboard fan capacity.

Fig. 8 discloses a side view of a standard buoyant body module 10 of another embodiment of the present application. As shown in fig. 8, each standard buoyant body module 10 also includes one or more bracing brackets 14. One or more bracing brackets 14 are provided in a rectangular frame enclosed by the two first floating columns 11, the upper wale bracket 12 and the lower wale bracket 13 in each standard buoyant body module 10.

In some embodiments, each standard floating body module 10 includes two bracing brackets 14, one end of each of the two bracing brackets 14 is connected to the middle position of the upper wale bracket 12, and the other end of each of the two bracing brackets 14 is connected to the position of the two first floating poles 11 near the lower wale bracket 13. Thereby, the structural strength of the standard buoyant body module 10 may be increased.

Fig. 9 discloses a schematic view of a first connecting member 21 according to another embodiment of the present application. As shown in fig. 9, since the first connecting members 21 at the other corners not connected with the tower 6 need to connect the second floating columns 30 in addition to connecting each of the first floating columns 11 of the adjacent two standard floating body modules 10. Therefore, the first connecting member 21, which is not connected to the tower 6, has one second mating surface connected to the second floating column 30 in addition to the two first mating surfaces 211 connected to the two first floating columns 11, respectively. The second mating surface has a shape matching the outer profile of the second floating upright 30.

Fig. 10 and 11 disclose a connection manner between the floating pillar and the connecting structural member 20 according to an embodiment of the present application, wherein fig. 10 discloses a schematic top view of the connection between the floating pillar and the connecting structural member 20, and fig. 11 discloses a schematic side view of the connection between the floating pillar and the connecting structural member 20. As shown in fig. 10 and 11, a prefabricated groove part 111 is provided on the floating column (which may be the first floating column 11 and/or the second floating column 30), and a latch 201 is provided on the connecting structural member 20, and the latch 201 on the connecting structural member 20 can be latched in the prefabricated groove part 111 on the floating column, thereby connecting the floating column and the connecting structural member 20. Further, the clip 201 on the connecting structural member 20 and the prefabricated groove member 111 on the floating column can be fixed by welding again at the clipping point, thereby further enhancing the connecting effect.

The connection between the floating column and the connecting structural member 20 shown in fig. 10 may be applied to the connection between the first floating column 11 and the first/second connecting structural members 21/22, and may also be applied to the connection between the second floating column 30 and the first connecting structural member 21.

The floating columns and the connecting members 20 in the modular floating foundation 1 of the present application can greatly improve the installation efficiency between the standard floating body modules 10 by adopting such a connection manner of the prefabricated groove parts 111 and the clip parts 201.

With continued reference to fig. 5 through 7, in some embodiments, a lower swing plate 40 is further provided at each corner of the polygon, and the lower swing plate 40 is connected to the bottoms of the two first and second floating posts 11 and 30 at the corresponding corner.

As shown in fig. 6, in some embodiments, a damping reinforcing plate 50 is connected between the lower wale brackets 13 of two adjacent standard buoyant modules 10 at each corner of the polygon. The damping reinforcing plate 50 is a plate-like structure, and the material of the damping reinforcing plate 50 can be steel or composite material, and the damping reinforcing plate has the following functions: firstly, the vertical and rotational damping of the modularized floating foundation 2 is increased, and the motion response of the degrees of freedom is reduced; secondly, the structure between the cross brace supports is strengthened and the strength is enhanced.

Fig. 12 discloses a schematic top view of the connection between the lower wale bracket 13 and the damping reinforcing plate 50 according to an embodiment of the present application. As shown in fig. 12, the prefabricated eye plate 131 is provided on the lower wale bracket 13, the mounting portion 51 having the mounting hole is provided on the damping reinforcing plate 50, and the mounting portion 51 on the damping reinforcing plate 50 and the prefabricated eye plate 131 on the lower wale bracket 13 may be connected by the bolt 52, thereby connecting the damping reinforcing plate 50 and the lower wale bracket 13. The damping reinforcing plate 50 is connected with the lower cross brace bracket 13 by the bolt, so that the installation efficiency of the damping reinforcing plate 50 can be improved.

The modular floating foundation 2 of the second embodiment of the present application has similar advantageous technical effects to the modular floating foundation 1 of the first embodiment.

In addition, the modular floating foundation 2 of the second embodiment of the present application is particularly suitable for high capacity wind turbines. After the capacity of a fan is increased, the existing three-upright-column floating foundation needs larger cross-brace span and larger diameter of the floating upright column, the cross-brace becomes flexible after being too long, and the structural deformation is difficult to overcome; in addition, larger diameter floating columns require denser structural reinforcement. In contrast, the length of the wale support of the modular floating foundation 2 according to the second embodiment of the present invention can be greatly reduced compared to that of only one floating column at the triangular point of the conventional three-column floating foundation because the modular floating foundation 2 according to the second embodiment of the present invention is composed of three floating columns (two first floating columns 11 and one second floating column 30) at the other corners (for example, triangular points) of the polygon except for the connecting tower 6, and the three floating columns are connected by the connecting structural members 20; in addition, the diameter of a single floating column of the modular floating foundation 2 of the second embodiment of the present application can be reduced by more than 40% compared to the conventional three-column floating foundation design under the condition of the same cross-sectional area, and the single floating column also plays a role of reducing the internal structural reinforcement of the floating column, and the dispersed cross-section has a larger area moment relative to the center of the water plane of the foundation under the condition of the same cross-sectional area, and the larger the restoring force is, the more stable the modular floating foundation 2 is.

In addition, the damping reinforcing plate 50 on the lower cross brace bracket 13 added in the modular floating foundation 2 of the second embodiment of the present application can effectively improve the damping of the modular floating foundation 2 in the heave and sway directions, reduce the motion response of the floating body structure, and the added structural cost and installation cost are very low, and the economy is excellent.

Deal with the fan of bigger capacity, the floating column and the bearing structure yardstick in each modularization subassembly of the modularization of the formula basis 2 that floats of this application second embodiment are the same, and structural component is few, is convenient for produce processing and transportation.

Two implementations of the modular floating foundation of the present application are provided below.

The first implementation scheme is as follows: in the standard floating body module, a single floating upright post can adopt a circle, a square, a diamond or a polygon, and the diameter is about 7m; the span of the cross brace support is 25-50 m, the minimum draft is 20m, and connecting structural members among the standard floating body modules and between the tower and the standard floating body modules are connected by welding or clamping groove bolts; the diameter of the column bottom is at least 6m. It is possible to obtain a total displacement of the modular floating foundation of about 6000-9000 tons.

The second implementation scheme is as follows: in the standard floating body module, the shape of a single floating upright column can adopt a circle, a square, a diamond or a polygon, and the diameter is about 8m; the span of the cross brace support is 50-60 m, the draught is at least 20m, and the connection between the standard floating body modules, the connection structural member of the tower and the standard floating body module, the connection between the damping reinforcing plate and the cross brace support at the lower part of the standard floating body module adopt welding or bolt connection; the diameter of the bottom of the column is at least 8m. It can be seen that the total displacement of the modular floating foundation is about 9000-13000 tons.

The modularized floating foundation can be suitable for sea areas with water depth larger than 40m, and can be used for installing high-power offshore wind turbines with the power of more than 10 MW.

The embodiment of the application also provides the fan. As shown in fig. 1 and 5, the wind turbine includes a modular floating foundation 1 or 2 as shown in fig. 1 or 5, a tower 6, and a wind turbine 7, the modular floating foundation 1 or 2 is connected to the side of the bottom of the tower 6, and the wind turbine 7 is installed on the top of the tower 6.

The modular floating foundation and the fan provided by the embodiment of the application are described in detail above. The modularized floating foundation and the wind turbine of the embodiment of the present application are described herein by using specific embodiments, and the description of the embodiments is only used to help understand the core idea of the present application and is not intended to limit the present application. It should be noted that, for those skilled in the art, without departing from the spirit and principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications should also fall into the protection scope of the appended claims of the present application.

Claims (13)

1. The utility model provides a modularization floats formula basis, connects in the side of the pylon bottom of fan which characterized in that: the modular floating foundation includes:

the standard floating body modules are sequentially connected to form a polygon; and

and a plurality of connecting structural members, wherein two adjacent standard floating body modules at each corner of the polygon are connected through the connecting structural members, and the tower is connected to the connecting structural members at one corner of the polygon.

2. A modular floating foundation as claimed in claim 1 wherein: each standard floating body module comprises two first floating upright columns, an upper cross brace bracket and a lower cross brace bracket, wherein the two first floating upright columns are connected with each other through the upper cross brace bracket and the lower cross brace bracket respectively, and the connecting structural member is connected with each first floating upright column in the two adjacent standard floating body modules.

3. A modular floating foundation as claimed in claim 2 wherein: the first floating upright post is provided with a prefabricated groove part, the connecting structural member is provided with a clamping piece, and the clamping piece is clamped in the prefabricated groove part to connect the first floating upright post with the connecting structural member.

4. A modular floating foundation as claimed in claim 2 wherein: the connecting structural members comprise first connecting structural members which are not connected with the tower and second connecting structural members which are connected with the tower, the first connecting structural members and the second connecting structural members are provided with two first matching surfaces, the two first matching surfaces are respectively connected with the two first floating stand columns correspondingly, and the second connecting structural members are also provided with a tower matching surface which is used for being connected with the tower.

5. A modular floating foundation as claimed in claim 4 wherein: and the other corners except the corner connected with the tower are also provided with second floating columns, the first connecting component is also provided with a second matching surface, and the second matching surface is correspondingly connected with the second floating columns.

6. The modular floating foundation as set forth in claim 5, wherein: the second floating upright column has the same structure as the first floating upright column.

7. A modular floating foundation as claimed in claim 5 wherein: the two first floating upright columns, the upper cross brace bracket and the lower cross brace bracket in each standard floating body module enclose a rectangular frame, and each standard floating body module further comprises one or more inclined brace brackets arranged in the rectangular frame.

8. A modular floating foundation as claimed in claim 7 wherein: each standard floating body module comprises two inclined strut supports, one ends of the two inclined strut supports are connected to the middle position of the upper cross strut support respectively, and the other ends of the two inclined strut supports are connected to the positions, close to the lower cross strut support, of the two first floating upright columns respectively.

9. The modular floating foundation as set forth in claim 5, wherein: polygonal every angle department still is equipped with the flagging and swashing board, two at corresponding angle department are connected to the flagging and swashing board first float the stand with the bottom that the stand was floated to the second.

10. A modular floating foundation according to claim 5 or 9 wherein: and a damping reinforcing plate is connected between the lower cross brace brackets of two adjacent standard floating body modules at each corner of the polygon.

11. A modular floating foundation as claimed in claim 10 wherein: the damping reinforcing plate is provided with a mounting part with a mounting hole, and the mounting part is connected with the prefabricated eye plate through a bolt.

12. A modular floating foundation as claimed in claim 1 wherein: the standard floating body modules comprise three standard floating body modules which are sequentially connected to form a triangle.

13. A fan, its characterized in that: comprising a modular floating foundation according to any one of claims 1-12 connected to the side of the bottom of the tower, a tower, and a wind turbine mounted on top of the tower.

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