CN215890321U - Semi-submersible fan and fan foundation thereof - Google Patents

Abstract

The utility model discloses a semi-submersible fan and a fan foundation thereof, which are used for providing buoyancy for a supporting structure (2) of a fan (1), and are characterized by comprising the following components: a floating body assembly comprising a plurality of floating bodies connected to the support structure (2) and symmetrically arranged about the support structure (2), adjacent floating bodies being connected, the floating bodies comprising a plurality of connected floating spheres (3); a ballast module (7), the ballast module (7) being connected at the bottom of the support structure (2), and the ballast module (7) being a variable centre of gravity configuration. The floating bodies are arranged into a plurality of floating ball bodies for connection, so that the subdivision design is realized, when ship collision and floating ice collision are met, the subdivision is realized by the floating balls, the floating fan cannot sink immediately, and the safety of the structure and the maintainability of the whole structure are improved.

Description

Semi-submersible fan and fan foundation thereof

Technical Field

The utility model relates to the technical field of offshore wind turbines, in particular to a semi-submersible wind turbine and a wind turbine foundation thereof.

Background

At present, the basic forms of offshore wind turbines are divided into stationary and floating. Wherein, floating basis includes: semi-submersible, barge, tension leg, etc. With the maturity of offshore wind power technology, offshore wind power plants gradually move from offshore to deep sea, and the foundation form is changed from a fixed foundation to a floating foundation along with the change of water depth.

The semi-submersible type floating platform has the advantages of good stability, wide applicable water depth range, convenience in construction and transportation and the like, and becomes a mainstream foundation form of a future offshore floating wind power plant.

However, most of the main structures of the existing semi-submersible floating platforms are upright column structures distributed in a triangular manner, and the upright column at each vertex angle is a single upright column, so that when the semi-submersible floating platform is impacted by a ship and floating ice, if the upright column structures are damaged, the semi-submersible floating platform can incline or even sink, and the safety of the structure is affected.

Therefore, how to provide a fan foundation to increase the safety of the structure is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a wind turbine foundation to increase the safety of the structure. In addition, the utility model also provides a semi-submersible floating platform with the fan foundation.

In order to achieve the purpose, the utility model provides the following technical scheme:

a wind turbine foundation for providing buoyancy to a support structure of a wind turbine, comprising:

the floating body assembly comprises a plurality of floating bodies which are connected with the supporting structure and symmetrically arranged about the supporting structure, adjacent floating bodies are connected, and each floating body comprises a plurality of connected floating spheres;

a ballast module connected at the bottom of the support structure, the ballast module being a variable center of gravity configuration.

Preferably, in the above fan foundation, the adjacent floating bodies are connected by a connecting rod to form a quadrilateral.

Preferably, in the above fan foundation, the floating bodies are disc structures or rectangular structures spliced by the floating spheres.

Preferably, in the above fan foundation, the floating body is a conical structure formed by splicing the floating spheres and gradually expanded from the top end to the bottom end.

Preferably, in the above fan foundation, the floating sphere is of a rectangular pyramid structure.

Preferably, in the wind turbine foundation, a transmission pipe for connecting the outside and the ballast module is arranged in the support structure.

Preferably, in the wind turbine foundation, the ballast module is filled with sand.

Preferably, in the wind turbine foundation, the ballast module is a cylindrical structure, and the diameter of the ballast module is larger than that of the support structure.

Preferably, in the wind turbine foundation, the floating body is connected with a mooring line.

A semi-submersible fan comprises a fan foundation, wherein the fan foundation is any one of the fan foundations described above.

The utility model provides a fan foundation, which realizes the subdivision design by arranging a floating body into a form of connecting a plurality of floating spheres, and when the floating body is impacted by a ship and floating ice, the subdivision is realized by a plurality of floating spheres, so that a floating fan cannot sink immediately, and the safety of the structure and the maintainability of the whole structure are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a wind turbine foundation disclosed in an embodiment of the present invention;

FIG. 2 is a top view of a wind turbine foundation disclosed in an embodiment of the present invention;

FIG. 3 is a schematic structural view of a wind turbine based ballast module disclosed in an embodiment of the present invention;

FIG. 4 is a force analysis diagram of a wind turbine foundation disclosed in an embodiment of the present invention;

FIG. 5 is a force analysis diagram of a wind turbine foundation according to an embodiment of the present invention.

Detailed Description

The utility model discloses a fan foundation for improving the safety of a structure. In addition, the utility model also discloses a semi-submersible floating platform with the fan foundation.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-5, the present application discloses a wind turbine foundation for providing buoyancy to a support structure 2 of a wind turbine 1, comprising a floating body assembly and ballast modules 7. The floating body assembly comprises a plurality of floating bodies which are connected with the supporting structure 2 and are symmetrically arranged relative to the supporting structure 2, adjacent floating bodies are connected, and the floating bodies comprise a plurality of connected floating spheres 3; and ballast modules 7 are attached to the bottom of the support structure 2 and the ballast modules 2 are centrally variably arranged to achieve a tumbler configuration of the support structure 2.

Through the form that sets up floating body as a plurality of floating spheroid 3 connections in this application, realized the subdivision design promptly, when meetting boats and ships striking, float ice striking, have a plurality of floaters to realize the subdivision for floating fan can not sink immediately, has increased the security of structure, overall structure's maintainability.

In a specific embodiment, the adjacent floating bodies are connected by the connecting rods 5 to form a quadrangle, that is, four groups of floating bodies are formed, and the adjacent floating bodies are connected by the connecting rods 5, so that all the floating bodies form a whole, and the uniform distribution of the buoyancy in the circumferential direction of the support structure 2 is ensured. In addition, in practice, the adjacent floating bodies may be connected into a regular hexagon or a triangle, that is, the number of the floating bodies needs to be selected according to actual requirements, and the floating bodies need to be arranged into a symmetrical structure with the support structure 2 as the center, so as to avoid the inclination of the support structure 2.

In a preferred embodiment, the floating bodies are disc structures or rectangular structures spliced by the floating spheres 3. The number and size of the floating spheres 3 are not limited, and in practice, the floating spheres 3 may be bonded or integrally formed to form a structure with a rectangular or circular outer contour. The contact area of the floating body and the sea surface can be increased through the arrangement, the buoyancy of the floating fan foundation is further improved, the stability of the floating fan is guaranteed, the buoyancy of the whole structure is improved, the application range of the floating platform is reduced from more than 50m to more than 30m, and the application range is enlarged.

Combining the above arrangement, when the floating fan is balanced, the weight of F is G; when the floating fan inclines at an angle of alpha degrees, the restoring moment is Ffloat, d, sin alpha; and the design of floating ball 3 is raised the floating core to being close to the surface of water position, and ballast module 7 reduces the focus to overall structure lower most part, has greatly increased the distance d of floating core and focus promptly for the moment of restitution maximize is favorable to overall structure stable.

In addition, the floater in this application is the toper structure that expands gradually by the top to the bottom that 3 splice of floater become, and every floater is the toper structure of splicing by floater 3 promptly, so can further raise the position of floating the heart, and then increases the distance of floating the heart and center, increases the stability of every floater, prevents the slope to guarantee the stability of fan.

In a preferred embodiment, the floating body may be configured as a rectangular pyramid structure or a cone structure, and it will be understood by those skilled in the art that the specific shape of the floating body may be configured according to different needs, and it is central that the floating body is formed by splicing a plurality of floating spheres 3.

In a further embodiment, a transfer pipe 6 is provided in the support structure 2 for connecting the outside with the ballast modules 7, by which transfer pipe 6 filling material can be fed into the ballast modules 7 for adjusting the weight of the ballast modules 7. The installation manner and the structural form of the transfer pipe 6 are not particularly limited. In practice, the support structure 2 can be arranged in a hollow structure while the strength of the support structure 2 is ensured, the hollow part is used as a transmission channel or a pipeline is arranged in the hollow part, and the transmission pipe 6 can be effectively protected by arranging the transmission pipe 6 in the support structure 2, so that the damage probability is reduced.

The material filled in the ballast module 7 is preferably sand, since sand can adsorb water and at the same time facilitate a change of position in order to change the position of the centre of gravity. The volume and weight of the ballast module 7 can be increased according to the depth of water application, thereby reducing the length of the underwater part; the sand is typically mounted at a height slightly less than the height of the ballast module 7, preferably 0.2-0.5m, so that when the floating fan is tilted, the sand can be pushed into the upper, thinner section of the column and automatically fall back to fill the ballast module when it is returned.

The concrete structure for the ballast module 7 may be a cylindrical structure, and the diameter of the ballast module 7 is set larger than the diameter of the support structure 2 to ensure the stability of the support structure 2. The specific size, shape, etc. of the ballast module 7 are not particularly limited herein.

The floating body is connected with a mooring cable 4, and the floating body can be fixed by arranging the mooring cable 4. During installation: firstly, the floating ball 3 and the connecting rod 5 are installed and conveyed to a machine site; then mooring cables 4 are arranged on the floating body; then the ballast module 7 is mounted below the support structure 2 and sand, etc. is poured into the ballast module 7 through the transfer pipe 6; then the floating body assembly is arranged on the supporting structure 2; and finally, installing the fan 1.

In addition, this application still discloses a semi-submerged fan, including the fan basis, it is specific, this fan basis be the fan basis disclosed in the above-mentioned embodiment, consequently, the semi-submerged fan that has this fan basis also has all above-mentioned technological effects, no longer gives unnecessary detail here.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A wind turbine foundation for providing buoyancy to a support structure (2) of a wind turbine (1), comprising:

a floating body assembly comprising a plurality of floating bodies connected to the support structure (2) and symmetrically arranged about the support structure (2), adjacent floating bodies being connected, the floating bodies comprising a plurality of connected floating spheres (3);

a ballast module (7), the ballast module (7) being connected at the bottom of the support structure (2), and the ballast module (7) being a variable centre of gravity configuration.

2. Wind turbine foundation according to claim 1, characterised in that adjacent floating bodies are connected by connecting rods (5) and form a quadrilateral.

3. The wind turbine foundation according to claim 1, wherein the floating bodies are disc structures or rectangular structures spliced by the floating spheres (3).

4. The wind turbine foundation according to claim 3, wherein the floating body is a conical structure formed by splicing the floating spheres (3) and gradually expanding from the top end to the bottom end.

5. Wind turbine foundation according to claim 4, characterized in that the floating spheres (3) are of a rectangular pyramid structure.

6. Wind turbine foundation according to claim 1, characterised in that a transport pipe (6) is arranged inside the support structure (2) for connecting the outside with the ballast module (7).

7. Wind turbine foundation according to claim 1, wherein the ballast module (7) is filled with sand.

8. Wind foundation according to claim 7, wherein the ballast module (7) is of cylindrical construction and the diameter of the ballast module (7) is larger than the diameter of the support structure (2).

9. Wind turbine foundation according to any of claims 1-8, characterized in that a mooring line (4) is connected to the floating body.

10. A semi-submersible wind turbine comprising a wind turbine foundation, wherein the wind turbine foundation is as claimed in any one of claims 1 to 9.

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