Flexible sail type vertical axis offshore wind power generation equipment

Abstract

The invention belongs to the technical field of offshore wind power generation, and discloses flexible sail type vertical axis offshore wind power generation equipment which comprises a foundation, a power generation device, a tower drum and a sail assembly. The power generation device is fixed to the top of the foundation, a rotating shaft of the power generation device is fixedly connected with the bottom of the tower drum, the tower drum is perpendicular to the foundation, a plurality of sail assemblies are arranged on the tower drum in the circumferential direction, the sail assemblies have the unfolded state and the folded state, and when the sail assemblies are in the unfolded state, the tower drum is driven to rotate under the action of wind power. The tower drum rotates to drive the power generation device to generate power. The tower drum is perpendicular to the foundation, a vertical axis wind power generation scheme is adopted, the sail assembly is in an unfolded state under the normal wind condition and is in a retracted state under the extreme weather such as typhoon, the sail can be flexibly retracted under the extreme weather, the load requirements of foundation and anchoring design of the floating type wind power generation system are reduced, and the wind power generation efficiency is improved. The purposes of reducing cost, increasing efficiency and improving self-storage capacity are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of offshore wind power generation, and in particular relates to a flexible sail-type vertical-axis offshore wind power generation equipment. Background Art

[0002] Vigorously developing offshore wind power is an important measure to increase the proportion of clean energy. Compared with offshore, deep sea has better wind resource conditions, huge development potential, and fewer restrictive factors. Therefore, the shift of offshore wind power layout from offshore to deep sea is an inevitable trend of industrial development.

[0003] Among them, floating offshore wind power technology is the key to the development of deep sea wind resources. The floating foundation supports the upper wind turbines and is connected to the seabed through a mooring system. It is less affected by water depth and is free from the constraints of complex seabed terrain and geological conditions. It has a wider range of applications and can obtain more wind energy resources. As one of the main forms of deep sea wind energy development in the future, floating offshore wind power has great development potential and is also a current research hotspot.

[0004] At present, since the floating offshore wind turbines were put into operation, such equipment generally adopts a horizontal axis design. With the increase of power generation capacity, the weight of the unit increases and the center of gravity rises, resulting in the required floating foundation becoming increasingly large to ensure stability. This not only increases the construction cost, but also makes the operation and maintenance costs of the unit continue to rise. Typhoons are frequent in some sea areas, and the strong waves and strong winds during typhoons have a very large impact on the safety of offshore wind power structures. Extreme meteorological and hydrological conditions such as typhoons are the controlling conditions for the design of floating offshore wind power.

[0005] Therefore, a new type of wind power structure is needed that can be flexibly retracted and deployed and has better adaptability, which can significantly reduce the load requirements of the foundation and anchoring design of the floating wind power system under extreme meteorological and hydrological conditions, and effectively reduce the cost of deep-sea wind power development. Summary of the invention

[0006] In view of the above problems, the present invention provides a flexible sail-type vertical axis offshore wind power generation equipment, which adopts the following technical solutions:

[0007] A flexible sail-type vertical axis offshore wind power generation equipment, comprising a foundation, a power generation device, a tower and a sail assembly;

[0008] Among them, the power generation device is fixed on the top of the foundation, the rotating shaft of the power generation device is fixedly connected to the bottom of the tower, the tower and the foundation are perpendicular to each other, and the tower is circumferentially provided with multiple sail assemblies, and the sail assembly has an unfolded state and a retracted state. When the sail assembly is in the unfolded state, the tower is driven to rotate under the action of wind force, and the rotation of the tower drives the power generation device to generate electricity.

[0009] Further, the sail assembly includes a flexible sail sheet, a first truss, a sail pole, a sail control component, a pulley, a second truss and a rope;

[0010] Wherein, the mast is fixedly connected to the bottom wall of the tower through the first truss, the sail control component is fixedly arranged on the mast, the bottom end of the sail sheet is fixedly connected to the mast, the pulley is fixedly connected to the top wall of the tower through the second truss, one end of the rope is connected to the sail control component, and the other end of the rope passes through the pulley and is connected to the top end of the sail sheet.

[0011] Furthermore, the bottom edge of the sail piece is fixedly connected to the mast, and the top of the sail piece is connected to the rope.

[0012] Furthermore, a hub flange is provided at the bottom of the tower, and the tower is fixedly connected to the rotating shaft of the power generation device through the hub flange.

[0013] Furthermore, the first truss and the mast of each sail assembly are located on a plane parallel to the foundation, one end of the first truss is connected to the bottom wall of the tower and are perpendicular to each other, and the other end of the first truss is connected to the middle position of the mast and are perpendicular to each other.

[0014] Furthermore, the second trusses of the plurality of sail assemblies are all located on a plane parallel to the foundation, one end of the second truss is fixedly connected to the top wall of the tower and is perpendicular to each other, and the pulley is provided at the bottom of the other end of the second truss.

[0015] Furthermore, it also includes an environment monitoring module, which is arranged on the top end surface of the tower, and the environment monitoring module is communicatively connected with the sail control component;

[0016] The environmental monitoring module is used to control the expansion or folding of the sails through the sail control component according to the obtained environmental data or remote manual instructions.

[0017] Furthermore, the foundation includes but is not limited to any one of a floating semi-submersible foundation, a tension leg foundation, a fixed monopile foundation, and a jacket foundation.

[0018] Further, the foundation includes a connecting plate, a central column and side columns;

[0019] Among them, the top of the central column is located above the water surface, the power generation device is fixedly connected to the top of the central column, a plurality of side columns are provided, and a plurality of side columns are arranged around the central column, and the bottom of each side column is fixedly connected to the bottom of the central column through a connecting plate, and a mooring point is provided on each side column.

[0020] Beneficial effects of the present invention:

[0021] 1. The tower and the foundation of the present invention are perpendicular to each other, and a vertical axis wind power generation scheme is adopted. The sail assembly is in an unfolded state under normal wind conditions and in a retracted state under extreme weather conditions such as typhoons. The sail can be flexibly recovered in extreme weather conditions, reducing the load requirements of the foundation and anchoring design of the floating wind power generation system, achieving the purpose of reducing costs, increasing efficiency and improving self-sustaining capacity.

[0022] 2. The sail of the present invention presents a specific airfoil in a horizontal cross-sectional view. Under the action of wind, the sail can generate lift, thereby providing the necessary torque for the rotation of the superstructure.

[0023] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic structural diagram of a flexible sail-type vertical axis offshore wind power generation device according to an embodiment of the present invention is shown;

[0026] Figure 2 A schematic diagram showing a sail assembly in an unfolded state according to an embodiment of the present invention is shown;

[0027] Figure 3 A schematic diagram of installing a sail assembly and a tower according to an embodiment of the present invention is shown;

[0028] Figure 4 A schematic diagram showing a sail assembly in a recovered state according to an embodiment of the present invention is shown.

[0029] In the figure: 1. foundation; 2. power generation device; 3. tower; 4. sail assembly; 41. sail sheet; 42. first truss; 43. sail pole; 44. sail control component; 45. pulley; 46. second truss; 47. rope; 5. environmental monitoring module; 11. connecting plate; 12. center column; 13. side column. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that the terms "first", "second" etc. in the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged in appropriate circumstances, so that the embodiments of the present application described here. In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" etc. are based on the orientation or positional relationship shown in the accompanying drawings.

[0032] The present invention provides a flexible sail-type vertical axis offshore wind power generation equipment, which can reduce the weight of the power generation equipment and reduce the load requirements of the foundation and anchoring design of the floating wind power generation system under extreme climatic conditions, thereby achieving the purpose of reducing costs, increasing efficiency and improving self-sustaining capacity.

[0033] like Figure 1 As shown, a flexible sail-type vertical axis offshore wind power generation equipment includes a foundation 1, a power generation device 2, a tower 3 and a sail assembly 4, wherein the power generation device 2 is fixed on the top of the foundation 1. For example, the form of the foundation 1 is not limited to a floating semi-submersible barge type, a fixed jacket, a barge type, a tension leg type, etc. The main body of the foundation 1 is located below the water surface and is used to provide upper structure support and anti-turning bending moment. Figure 1 The basic 1 form involved in the invention should not be used to limit the present invention.

[0034] The rotating shaft of the power generation device 2 is fixedly connected to the bottom of the tower 3. The tower 3 is perpendicular to the foundation 1. The tower 3 is provided with a plurality of sail assemblies 4 along the circumference. The sail assemblies 4 have an extended state and a retracted state. The power generation device 2 as a whole does not come into direct contact with the seawater, and there is space inside it to accommodate workers for maintenance.

[0035] When the sail assembly 4 is in the unfolded state, the tower 3 is driven to rotate under the action of wind force, and the rotation of the tower 3 drives the power generation device 2 to generate electricity.

[0036] The wind energy capture structure of the wind power generation equipment in the embodiment of the present invention adopts a vertical axis wind power generation solution as a whole. The sail assembly 4 is in an unfolded state under normal wind conditions and in a retracted state under extreme weather conditions such as typhoons. The sail can be flexibly recovered in extreme weather conditions, reducing the load requirements of the foundation and anchoring design of the floating wind power generation system, thereby achieving the purpose of reducing costs, increasing efficiency and improving self-sustaining capacity.

[0037] like Figure 2 and Figure 3 As shown, for example, the sail assembly 4 includes a flexible sail sheet 41, a first truss 42, a sail pole 43, a sail control component 44, a pulley 45, a second truss 46 and a rope 47, wherein the sail pole 43 is fixedly connected to the bottom wall of the tower 3 through the first truss 42, the sail control component 44 is fixedly arranged on the sail pole 43, the bottom end of the sail sheet 41 is fixedly connected to the sail pole 43, the pulley 45 is fixedly connected to the top wall of the tower 3 through the second truss 46, one end of the rope 47 is connected to the sail control component 44, and the other end of the rope 47 passes through the pulley 45 and is connected to the top end of the sail sheet 41.

[0038] The sail control component 44 is used to control the folding and unfolding of the sail sheet 41, specifically: Figure 2 As shown, when the sail control component 44 tightens the rope 47, the top of the sail 41 is stretched toward the top of the tower 3 and is in an open state. Under the action of wind force, the sail 41 drives the tower 3 to rotate through the first truss 42, and the tower 3 rotates to drive the generator 2 to generate electricity. Figure 4 As shown, when the sail control unit 44 releases the rope 47, the sail sheet 41 is folded on the sail pole 43 and is in a recovery mode, which is a shutdown state.

[0039] The sail 41 of the embodiment of the present invention is connected to the tower 3 through the first truss 42 and the second truss 46 to form a frame structure, which reduces the overall weight of the equipment and ensures stable support of the sail 41.

[0040] For example, the first truss 42 is parallel to the second truss 46, and the length of the second truss 46 is smaller than the length of the first truss 42, so that the sail 41 has a certain angle with the tower 3. For example, the sail 41 is triangular, the bottom edge of the sail 41 is fixedly connected to the mast 43, and the top of the sail 41 is connected to the rope 47.

[0041] The sail piece 41 of the embodiment of the present invention presents a specific airfoil in a horizontal cross-sectional view. Under the action of wind, the sail piece 41 can generate lift, thereby providing the necessary torque for the rotation of the superstructure.

[0042] For example, the tower 3 is entirely located above the water surface, a hub flange is provided at the bottom of the tower 3 , the tower 3 is fixedly connected to the rotating shaft of the power generation device 2 via the hub flange, and can be twisted relative to the foundation 1 .

[0043] For example, the first truss 42 and the mast 43 of each sail assembly 4 are located on a plane parallel to the foundation 1, one end of the first truss 42 is connected to the bottom wall of the tower 3 and are perpendicular to each other, and the other end of the first truss 42 is connected to the middle position of the mast 43 and are perpendicular to each other.

[0044] For example, the second trusses 46 of the plurality of sail assemblies 4 are all located on a plane parallel to the foundation 1 , one end of the second truss 46 is fixedly connected to the top wall of the tower 3 and is perpendicular to each other, and a pulley 45 is provided at the bottom of the other end of the second truss 46 .

[0045] For example, four sail assemblies 4 are provided, four masts 43 are fixedly connected to the bottom of the tower 3 through four first trusses 42 respectively, the four first trusses 42 form a horizontal scattering truss, and four pulleys 45 are fixedly connected to the top wall of the tower 3 through four second trusses 46 respectively.

[0046] For example, the offshore wind power generation equipment further includes an environment monitoring module 5 , which is disposed on the top end surface of the tower 3 , and the environment monitoring module 5 is communicatively connected with the sail control component 44 .

[0047] The environmental monitoring module 5 serves as the superior control system of the sail control component 44, and plays the role of uploading data and issuing instructions. The environmental monitoring module 5 is used to upload environmental data to the remote command center to provide data support for equipment monitoring. For example, the environmental monitoring module 5 includes a wind cup, which measures the wind speed in real time and uploads the wind speed data to the remote command center.

[0048] The environmental monitoring module 5 is also used to control the expansion or folding of the sail 41 through the sail control component 44 according to the acquired environmental data or remote manual instructions, so as to realize the function of manually remotely controlling the folding and unfolding of the sail 41 or automatically performing the folding and unfolding according to the environmental conditions.

[0049] Take the semi-submersible barge solution of foundation 1 as an example. Figure 3 As shown, for example, the foundation 1 can use an unsupported five-column floating type, the foundation 1 includes a connecting plate 11, a central column 12 and side columns 13, the top of the central column 12 is located above the water surface, the power generation device 2 is fixedly connected to the top of the central column 12, a plurality of side columns 13 are provided, and the plurality of side columns 13 are arranged around the central column 12, the bottom of each side column 13 is fixedly connected to the bottom of the central column 12 through a connecting plate 11, the axial center line of the central column 12 is parallel to the axial center lines of the plurality of side columns 13, and a mooring point is provided on each side column 13 to ensure that the equipment has a certain mooring stability.

[0050] For example, four side pillars 13 are provided, and the four side pillars 13 are evenly distributed on the outside of the central pillar 12 , and the four side pillars 13 are distributed on a circle with the central pillar 12 as the center.

[0051] Foundation 1 can also optimize the structural form through hydrodynamic experiments, simulations and other means to ensure good hydrodynamic characteristics.

[0052] For example, the power generation device 2 includes a generator, a gearbox and a brake component. The gearbox is used to adjust the generator speed so that the generator speed reaches the power generation speed. The brake component is used to brake the generator so that the generator remains in a shutdown state in an emergency or under extreme wind conditions.

[0053] The electricity generated by the present invention can be transmitted to an offshore substation via an underwater cable, and then transmitted to an onshore substation for use by end users.

[0054] The present invention adopts a retractable sail assembly 4 to achieve aerodynamic braking of the vertical axis, thereby reducing weight and enabling flexible recovery of the sail under extreme weather conditions, thereby improving the self-sustaining ability of the equipment and reducing the equipment's own weight and construction costs.

[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flexible sail-type vertical axis offshore wind power generation equipment, characterized in that: It comprises a foundation (1), a power generation device (2), a tower (3) and a sail assembly (4); The power generation device (2) is fixed on the top of the foundation (1), the rotating shaft of the power generation device (2) is fixedly connected to the bottom of the tower (3), the tower (3) and the foundation (1) are perpendicular to each other, and the tower (3) is provided with a plurality of sail assemblies (4) along the circumference, and the sail assembly (4) has an unfolded state and a retracted state. When the sail assembly (4) is in the unfolded state, it drives the tower (3) to rotate under the action of wind, and the tower (3) rotates to drive the power generation device (2) to generate electricity.

2. The flexible sail-type vertical axis offshore wind power generation equipment according to claim 1, characterized in that: The sail assembly (4) comprises a flexible sail sheet (41), a first truss (42), a sail pole (43), a sail control component (44), a pulley (45), a second truss (46) and a rope (47); The mast (43) is fixedly connected to the bottom wall of the tower (3) through the first truss (42), the sail control component (44) is fixedly arranged on the mast (43), the bottom end of the sail sheet (41) is fixedly connected to the mast (43), the pulley (45) is fixedly connected to the top wall of the tower (3) through the second truss (46), one end of the rope (47) is connected to the sail control component (44), and the other end of the rope (47) passes through the pulley (45) and is connected to the top end of the sail sheet (41).

3. The flexible sail-type vertical axis offshore wind power generation equipment according to claim 2 is characterized in that: The bottom edge of the sail sheet (41) is fixedly connected to the mast (43), and the top of the sail sheet (41) is connected to the rope (47).

4. The flexible sail-type vertical axis offshore wind power generation equipment according to claim 1, characterized in that: A hub flange is provided at the bottom of the tower (3), and the tower (3) is fixedly connected to the rotating shaft of the power generation device (2) via the hub flange.

5. The flexible sail-type vertical axis offshore wind power generation equipment according to claim 2, characterized in that: The first truss (42) and the mast (43) of each sail assembly (4) are located on a plane parallel to the foundation (1), one end of the first truss (42) is connected to the bottom wall of the tower (3) and are perpendicular to each other, and the other end of the first truss (42) is connected to the middle position of the mast (43) and are perpendicular to each other.

6. The flexible sail-type vertical axis offshore wind power generation equipment according to claim 2, characterized in that: The second trusses (46) of the plurality of sail assemblies (4) are all located on a plane parallel to the foundation (1); one end of the second truss (46) is fixedly connected to the top wall of the tower (3) and is perpendicular to each other; the pulley (45) is provided at the bottom of the other end of the second truss (46).

7. The flexible sail-type vertical axis offshore wind power generation equipment according to claim 2 or 3, characterized in that: It also includes an environmental monitoring module (5), the environmental monitoring module (5) is arranged on the top end surface of the tower (3), and the environmental monitoring module (5) is communicatively connected with the sail control component (44); The environmental monitoring module (5) is used to control the expansion or folding of the sail sheet (41) through the sail control component (44) according to the obtained environmental data or remote manual instructions.

8. The flexible sail-type vertical axis offshore wind power generation equipment according to any one of claims 1 to 6, characterized in that: The foundation (1) includes but is not limited to any one of a floating semi-submersible foundation, a tension leg foundation, a fixed monopile foundation, and a jacket foundation.

9. The flexible sail-type vertical axis offshore wind power generation equipment according to claim 8, characterized in that: The foundation (1) comprises a connecting plate (11), a central column (12) and side columns (13); The top of the central column (12) is located above the water surface, the power generation device (2) is fixedly connected to the top of the central column (12), a plurality of side columns (13) are provided, and the plurality of side columns (13) are arranged around the central column (12), the bottom of each side column (13) is fixedly connected to the bottom of the central column (12) via a connecting plate (11), and a mooring point is provided on each side column (13).

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