Floating type fan and offshore wind power generation system

Abstract

The invention relates to the field of offshore wind power engineering, in particular to a floating type draught fan and an offshore wind power generation system.The floating type draught fan comprises a modular buoyancy tank, the modular buoyancy tank comprises a plurality of buoyancy tank type floating bodies arranged in parallel and connecting pieces, each buoyancy tank type floating body is of a cylindrical structure and is made of concrete, and the connecting pieces are divided into middle connecting pieces and end connecting pieces; the adjacent buoyancy tank type floating bodies are connected through middle connecting pieces, the two ends of each modular buoyancy tank are provided with end connecting pieces respectively, a hollow cabin is arranged in each modular buoyancy tank, at least one cabin dividing plate is arranged in each hollow cabin to divide each hollow cabin into at least two independent cabins, and air bags are arranged in the independent cabins. The tower drum is arranged at the central position of the top of the modular buoyancy tank; the wind turbine generator is mounted at the top of the tower drum; and the mooring system is connected to one end of the modular buoyancy tank. Modularized assembly and buoyancy safety redundancy can be achieved.

Description

Technical Field

[0001] This invention relates to the field of offshore wind power engineering, and more specifically, to a floating wind turbine and an offshore wind power generation system. Background Technology

[0002] With the accelerated development of deep-sea wind energy resources, floating wind power has become an important solution for deep-water (>50m) areas. However, existing monolithic concrete floating structures suffer from problems such as high manufacturing difficulty, high transportation and installation costs, difficult repair after partial damage, and insufficient buoyancy redundancy, which limit their large-scale application. To solve these problems, there is an urgent need for a new type of floating foundation structure with modular assembly and buoyancy safety redundancy to improve the economy, safety, and durability of deep-sea floating wind power systems. Summary of the Invention

[0003] The purpose of this invention is to provide a floating wind turbine that can achieve modular assembly and buoyancy safety redundancy.

[0004] Another objective of this invention is to provide an offshore wind power generation system that enables modular assembly and buoyancy safety redundancy.

[0005] The technical solution of this invention is implemented as follows: A floating wind turbine, comprising: A modular floating box includes multiple parallel floating box-type floats and several connectors. The floating box-type floats are cylindrical structures and are made of concrete. The connectors are divided into intermediate connectors located in the middle and end connectors located at both ends. Adjacent floating box-type floats are connected by the intermediate connectors. The end connectors are respectively provided at both ends of the modular floating box. A hollow compartment is provided inside the modular floating box. At least one partition plate is provided in the hollow compartment to divide the hollow compartment into at least two independent compartments. An airbag is provided in the independent compartment. The tower is located at the center of the top of the modular floating box; The wind turbine is installed on the top of the tower. A mooring system, connected to one end of the modular pontoon, is used to anchor the floating wind turbine to the seabed.

[0006] Furthermore, a ring of bosses is provided at each of the two ends of the floating box-type float, and a ring of first prestressed stranded wire holes is provided on the outer ring of the bosses; The intermediate connector has a groove on each of its two sides, and the end connector also has a groove on one side. The grooves correspond to and fit the bosses one by one. A sealing structure is provided between the bosses and the grooves. The outer ring of the grooves has a second prestressed strand hole. The first prestressed strand hole and the second prestressed strand hole are provided one to one. The prestressed steel strands pass through the first prestressed strand hole and the second prestressed strand hole in sequence and are connected to the connector by prestressing tension.

[0007] Furthermore, the connector has a flat plate structure, the number of the floating box-type floats is an even number and not less than four, and the intermediate connectors are divided into two types of central connectors and transition connectors with different thicknesses. The connector located in the middle of the modular floating box is the central connector, and the connector located between the central connector and the end connector is the transition connector. The end connector, the transition connector and the central connector have the same length and the same width but different thicknesses. The thickness of the end connector is H1, the thickness of the transition connector is H2, and the thickness of the central connector is H3, satisfying: H1 < H2 < H3. The thickness of the central connector is not less than the diameter of the bottom end of the tower. The bottom end of the tower is welded to the center position of the central connector.

[0008] Furthermore, the floating box-type float is a rectangular cylindrical structure, including two long plate sections and two short plate sections, wherein the long plate sections are arranged horizontally and the short plate sections are arranged vertically; The boss is a rectangular boss, and the first prestressed strand holes are distributed in a rectangular pattern around the outer ring of the boss. The connector is a rectangular plate, which has the same length and width as the pontoon-type float. The groove is a rectangular annular groove, and the second prestressed strand holes on the outer ring of the groove are distributed in a rectangular pattern.

[0009] Furthermore, the compartment panel inside the hollow cabin is configured as one, and the compartment panel is parallel to the short plate portion and disposed in the middle of the hollow cabin.

[0010] Furthermore, both the floating box-type float and the compartment plate are made of concrete, and the floating box-type float and the compartment plate are integrally formed structures. The connector is made of steel.

[0011] Furthermore, it also includes sealing plates, with the sealing plates respectively installed at both ends of the hollow compartment, the sealing plates being used to seal the hollow compartment.

[0012] Furthermore, the airbag is a rubber airbag and the size of the airbag matches the size of the independent compartment, and the sealing structure uses a rubber waterstop.

[0013] Furthermore, the mooring system includes a mooring cable, the upper end of which is connected to the modular buoy.

[0014] An offshore wind power generation system, comprising the aforementioned floating wind turbine.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The pontoon of this application adopts a modular design, which is assembled from multiple cylindrical concrete floats. The modular design enables modular assembly, facilitating manufacturing, transportation, and installation, as well as subsequent maintenance and replacement. Each hollow chamber within the concrete float is divided into several independent compartments by partition plates, and each independent compartment is equipped with an airbag. These airbags ensure the buoyancy of the entire modular pontoon. Even if water seepage or leakage occurs in the concrete float or at the connection points, the overall buoyancy of the pontoon will not be significantly lost. Furthermore, because the pontoon contains many smaller airbags, even if one or several airbags leak, it will not significantly affect the buoyancy. In contrast, if each hollow compartment only has one large airbag, a large airbag leak would cause all the airbags in the hollow compartment to fail. Therefore, the design of multiple smaller airbags effectively avoids the problem of overall buoyancy failure, further preventing the platform from sinking. Moreover, the overall structure is simple, highly stable, and highly safe, achieving buoyancy safety redundancy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an isometric view of the floating fan of the present invention; Figure 2 This is a top view of the floating fan of the present invention; Figure 3 This is an isometric view of the floating box-type float of the present invention; Figure 4 This is a top view of the floating box-type float of the present invention; Figure 5 This is a front view of the floating box-type float of the present invention; Figure 6 This is a three-dimensional view of the connector and sealing plate of the present invention; Figure 7 This is an overall top view of the central connector and the sealing plate of the present invention; Figure 8 This is an overall front view of the connector and sealing plate of the present invention.

[0018] In the picture: 100 - Modular floating box; 110 - Floating box-type floating body; 111 - Independent compartment; 112 - First prestressed strand hole; 113 - Boss; 120 - Connector; 1201 - End connector; 1202 - Transition connector; 1203 - Center connector; 121 - Groove; 122 - Second prestressed strand hole; 130 - Cabin sealing plate; 140 - Cabin dividing plate; 200 - Tower; 300 - Wind turbine; 400 - Mooring cable. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] Example 1 Reference Figures 1-8 This embodiment provides a floating fan, which includes: The modular floating box 100 is modularly designed and includes multiple parallel floating box-type floats 110 and several connectors 120. The floating box-type floats 110 are cylindrical structures. The connectors 120 are divided into intermediate connectors 120 located in the middle and end connectors 1201 located at both ends. Adjacent floating box-type floats 110 are connected by intermediate connectors 120. End connectors 1201 are respectively provided at both ends of the modular floating box 100. A hollow compartment is provided inside the modular floating box 100. At least one partition plate 140 is provided inside the hollow compartment to divide the hollow compartment into at least two independent compartments 111. An airbag is provided inside the independent compartment 111. The tower 200 is located at the center of the modular floating box 100; Wind turbine 300 is installed on top of tower 200; The mooring system, connected to one end of the modular pontoon 100, is used to anchor the floating wind turbine to the seabed.

[0027] Specifically, a ring of bosses 113 is provided at each of the two ends of the floating box type float 110, and a ring of first prestressed strand holes 112 is provided on the outer ring of the bosses 113. The intermediate connector 120 has a groove 121 on each of its two sides. The end connector 1201 also has a groove 121 on one side and a flat surface on the other side (outer surface). The grooves 121 and bosses 113 are matched and fit together. The grooves 121 on both sides of the intermediate connector 120 are used to connect with the bosses 113 on the floating hull 110 on both sides. After connection, a sealing structure is set between the bosses 113 and the grooves 121. The sealing structure uses a rubber waterstop to ensure that there is no water leakage at the connection. The outer ring of the groove 121 has a second prestressed strand hole 122. The first prestressed strand hole 112 and the second prestressed strand hole 122 are set one-to-one. After the bosses 113 connect with the grooves 121, the prestressed steel strands are passed through the first prestressed strand hole 112 and the second prestressed strand hole 122 in sequence, and the floating hull 110 and the connector 120 are connected by prestressing tension.

[0028] The connector 120 has a flat plate-like structure. The number of floating pontoons 110 is an even number and no less than four. The intermediate connectors 120 are divided into two types of connectors with different thicknesses: a central connector 1203 and a transition connector 1202. The connector 120 located in the exact center of the modular pontoon 100 is the central connector 1203, and the connector 120 located between the central connector 1203 and the end connector 1201 is the transition connector 1202. The end connector 1201 and the transition connector... The end connector 1201 and the transition connector 1202 have the same length and width but different thicknesses. The thickness of the end connector 1201 is H1, the thickness of the transition connector 1202 is H2, and the thickness of the central connector 1203 is H3, satisfying the condition: H1 < H2 < H3. Furthermore, the thickness of the central connector 1203 is not less than the diameter of the bottom end of the tower 200 to facilitate support of the tower 200. The tower 200 is vertically positioned, and its bottom end is welded to the center of the central connector 1203. Since the end connector 1201 connects only one float 110, its required thickness is less, hence its minimum thickness. The transition connector 1202 needs to connect two adjacent sets of float assemblies, therefore its thickness needs to be greater than that of the end connector 1201. Since the central connector 1203 is located at the very center of the modular pontoon 100 and needs to support the tower 200, its thickness is not less than the diameter of the bottom of the tower 200. The bottom of the tower 200 is welded to the center of the top of the central connector 1203. In this way, the tower 200 is set at the very center of the modular pontoon 100, which can maximize the stability.

[0029] This embodiment provides a preferred implementation. The modular floating box 100 includes four floating box-type floats 110 and five connectors 120. The five connectors 120 include three types of connectors 120 with different thicknesses, namely two end connectors 1201, one central connector 1203, and a transition connector 1202 located between the end connectors 1201 and the central connector 1203. The central connector 1203 is located at the middle position of the modular floating box 100.

[0030] It should be noted that the number of pontoon-type floats 110 is an even number, not limited to four; the number of center connectors 1203 is one; and the number of end connectors 1201 is two. When the number of pontoon-type floats 110 is greater than four, the number of transition connectors 1202 increases accordingly. For example, when the number of pontoon-type floats 110 is six, the number of transition connectors 1202 is four; when the number of pontoon-type floats 110 is eight, the number of transition connectors 1202 is six. That is, the number of pontoon-type floats 110 is always two more than the number of transition connectors 1202.

[0031] Specifically, the floating box-type float 110 is a rectangular cylindrical structure, including two long plate sections and two short plate sections, wherein the long plate sections are arranged horizontally and the short plate sections are arranged vertically. The boss 113 is a rectangular boss 113, and the first prestressed strand holes 112 located on the outer ring of the boss 113 are distributed in a rectangular shape. The connector 120 is a rectangular plate, with the same length and width as the pontoon-type float 110. The groove 121 is a rectangular annular groove, and a ring of second prestressed strand holes 122 located around the outer ring of the groove 121 are distributed in a rectangular pattern. Prestressed steel strands are used for the prestressed strands. After the prestressed steel strands are threaded through the first and second prestressed strand holes 112, prestressing tensioning connects the connector 120 to the pontoon-type float 110, resulting in a more uniform connection and improved connection stability. Prestressing is applied to the prestressed steel strands, ensuring a tight connection between each connector 120 and the pontoon-type float 110. The groove 121 on the connector 120 and the boss 113 on the pontoon-type float 110 engage with each other, ensuring the transmission of lateral shear force. The engagement of the groove 121 and the boss 113 enhances the connection strength and transmits lateral shear force, preventing slippage at the joint. A rubber waterstop is arranged between the groove 121 and the boss 113 to achieve the function of preventing water seepage and ensure long-term durability.

[0032] This embodiment provides a preferred implementation, wherein the compartment panel 140 inside the hollow cabin is configured as one, such as... Figure 3 and Figure 5As shown, the partition plate 140 is parallel to the short plate section and is located in the middle of the hollow compartment. This partition plate 140 divides the hollow compartment into two independent compartments 111, and each independent compartment 111 is equipped with an airbag. The airbag is a rubber airbag, and the size of the airbag matches the size of the independent compartment 111. The rubber airbag can provide emergency buoyancy, avoid significant loss of buoyancy, and ensure platform safety. These airbags ensure the buoyancy of the entire modular pontoon 100. Even if water seeps or leaks at the concrete float or the connection with the connector 120, the buoyancy of the entire pontoon will not be significantly lost. Furthermore, since there are many smaller airbags inside the pontoon, even if one or more airbags leak, it will not significantly affect the buoyancy. In contrast, if each hollow compartment is designed with only one large airbag, a leak in the large airbag would cause all the airbags in the hollow compartment to fail. Therefore, designing multiple smaller airbags can effectively avoid the problem of overall buoyancy failure, further preventing the platform from sinking. Moreover, the overall structure is simple, highly stable, and highly safe, and can achieve buoyancy safety redundancy.

[0033] Both the pontoon-type float 110 and the compartment plate 140 are made of concrete, and the pontoon-type float 110 and the compartment plate 140 are integrally formed structures to improve structural strength; the connector 120 is made of steel.

[0034] It also includes a sealing plate 130. Since the two ends of the pontoon-type float 110 have openings, sealing plates 130 are installed at the two ends of the pontoon-type float 110 to seal them. The dimensions of the sealing plate 130 and the hollow chamber of the pontoon-type float 110 are matched. The sealing plate 130 can be embedded in the hollow chamber and can transmit a certain amount of lateral shear force. Similarly, a rubber waterstop is also provided around the sealing plate 130 to ensure that the connection does not leak water and improve the sealing performance. The dimensions of the sealing plate 130 match the dimensions of the hollow chamber ports. After being embedded in the hollow chamber, it further transmits lateral shear force and increases the water-stopping performance.

[0035] The mooring system includes a mooring cable 400, the upper end of which is connected to a modular buoy 100.

[0036] In this scheme, several modular pontoons 100 and connectors 120 are arranged alternately. Prestressed steel strands are passed through the corresponding first prestressed strand holes 112 and second prestressed strand holes 122 and tensioned to apply prestress, thereby assembling the pontoon-type floats 110 into a whole, improving the overall structural integrity and fatigue resistance.

[0037] Example 2 An offshore wind power generation system comprising the aforementioned floating wind turbine.

[0038] The pontoon of this application adopts a modular pontoon 100, which is spliced ​​together from multiple cylindrical concrete floats. The modular design enables modular assembly, which facilitates manufacturing, transportation and installation, and is also easy to maintain and replace later. Each hollow compartment within the concrete buoy is divided into several independent compartments 111 by a partition plate 140, and each independent compartment 111 is equipped with an airbag. These airbags ensure the buoyancy of the entire modular buoy 100. Even if water seepage / leakage occurs in the concrete buoy or at the connection with the connector 120, the buoyancy of the entire buoy will not be significantly lost. Furthermore, since there are many small-volume airbags inside the buoy, even if one or several airbags leak, it will not significantly affect the buoyancy. However, if each hollow compartment is designed with only one large-volume airbag, if the large airbag leaks, it will cause the airbags in the entire hollow compartment to fail. Therefore, designing multiple small-volume airbags can effectively avoid the problem of overall buoyancy failure, further preventing the platform from sinking. Moreover, the overall structure is simple, highly stable, and highly safe, and can achieve buoyancy safety redundancy.

[0039] The beneficial effects of the technical solution of the present invention are: 1. Modular design: Facilitates manufacturing, transportation, and installation, and also makes later maintenance and replacement easy; 2. Multiple buoyancy protection: Even if water enters the pontoon box, the rubber airbags will ensure that the platform does not sink; 3. High-strength connection: The connection is made through prestressed steel strands and concave-convex structures (protrusion 113 and groove 121), resulting in a very robust overall structure; 4. Good waterproof performance: Rubber waterstops are provided at the connection between the groove 121 and the boss 113 and at the connection between the sealing plate 130 and the port of the floating box 110 to prevent seawater from seeping in. 5. Suitable for deep-sea environments: Suitable for deep-sea areas with water depths of over 50 meters, providing a stable platform for offshore wind power.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A floating fan, characterized in that, include: The modular floating box (100) includes multiple parallel floating box-type floats (110) and several connectors (120). The floating box-type floats (110) are cylindrical structures and are made of concrete. The connectors (120) are divided into intermediate connectors (120) located in the middle and end connectors (1201) located at both ends. Adjacent floating box-type floats (110) are connected by the intermediate connectors (120). The end connectors (1201) are respectively provided at both ends of the modular floating box (100). The modular floating box (100) is provided with a hollow compartment. At least one partition plate (140) is provided in the hollow compartment to divide the hollow compartment into at least two independent compartments (111). An airbag is provided in the independent compartment (111). The tower (200) is located at the center of the top of the modular floating box (100); A wind turbine generator (300) is installed on top of the tower (200); A mooring system, connected to one end of the modular pontoon (100), is used to anchor the floating wind turbine to the seabed.

2. The floating fan according to claim 1, characterized in that, The two ends of the floating box type float (110) are respectively provided with a ring of bosses (113), and the outer ring of the bosses (113) is provided with a ring of first prestressed strand holes (112). The intermediate connector (120) has a groove (121) on each of its two sides, and the end connector (1201) also has a groove (121) on one side. The groove (121) and the boss (113) are matched and fit together. A sealing structure is provided between the boss (113) and the groove (121). The outer ring of the groove (121) is provided with a second prestressed strand hole (122). The first prestressed strand hole (112) and the second prestressed strand hole (122) are provided in a one-to-one correspondence. The prestressed steel strand passes through the first prestressed strand hole (112) and the second prestressed strand hole (122) in sequence and is connected to the pontoon-type float (110) and the connector (120) by prestressing tension.

3. The floating fan according to claim 2, characterized in that, The connector (120) has a flat plate-like structure. The number of the floating box-type floats (110) is an even number and not less than four. The intermediate connector (120) is divided into two types of connectors with different thicknesses: a central connector (1203) and a transition connector (1202). The connector (120) located in the center of the modular float (100) is the central connector (1203), and the connector (120) located between the central connector (1203) and the end connector (1201) is the transition connector (1202). The end connector (1201), the transition connector (1202), and the center connector (1203) have the same length and width but different thicknesses. The thickness of the end connector (1201) is H1, the thickness of the transition connector (1202) is H2, and the thickness of the center connector (1203) is H3, satisfying that H1 < H2 < H3. Furthermore, the thickness of the center connector (1203) is not less than the diameter of the bottom end of the tower (200). The bottom end of the tower (200) is welded to the center position of the center connector (1203).

4. The floating fan according to claim 2, characterized in that, The floating box type float (110) is a rectangular cylindrical structure, including two long plate sections and two short plate sections, wherein the long plate sections are arranged horizontally and the short plate sections are arranged vertically; The boss (113) is a rectangular boss (113), and the first prestressed strand holes (112) in a ring around the outer ring of the boss (113) are distributed in a rectangular shape; The connector (120) is a rectangular plate, which has the same length and width as the floating box-type float (110). The groove (121) is a rectangular annular groove, and the second prestressed strand holes (122) on the outer ring of the groove (121) are distributed in a rectangular pattern.

5. The floating fan according to claim 4, characterized in that, The compartment panel (140) in the hollow cabin is configured as one, and the compartment panel (140) is parallel to the short plate portion and is located in the middle of the hollow cabin.

6. The floating fan according to claim 5, characterized in that, Both the floating box type float (110) and the compartment plate (140) are made of concrete, and the floating box type float (110) and the compartment plate (140) are integrally formed structures. The connector (120) is made of steel.

7. The floating fan according to claim 1, characterized in that, It also includes a sealing plate (130), which is provided at both ends of the hollow compartment. The sealing plate (130) is used to seal the hollow compartment.

8. The floating fan according to claim 2, characterized in that, The airbag is a rubber airbag and the size of the airbag matches the size of the independent compartment (111). The sealing structure is a rubber waterstop.

9. The floating fan according to claim 1, characterized in that, The mooring system includes a mooring cable (400), the upper end of which is connected to the modular buoy (100).

10. An offshore wind power generation system, characterized in that, Includes the floating fan as described in any one of claims 1-9.

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