Floating multi-machine combined wind driven generator

Abstract

According to the floating multi-machine combined wind driven generator provided by the invention, the fan blades, the wind driven generator, the base power generation assembly and the base power generator are arranged, so that the floating multi-machine combined wind driven generator not only can generate power by capturing wind power, but also can generate power when wind waves are large and wind waves are large. Under the condition that the base swings and / or moves, the base power generation assembly is used for driving the base power generator to generate power, the working range of the floating multi-machine combined wind driven generator is greatly widened, meanwhile, the stability of the base under large stormy waves is improved, and the floating multi-machine combined wind driven generator is simple and reliable in structure, low in cost and suitable for popularization and application. And large-scale construction and popularization are facilitated, so that the utilization rate of clean energy is improved.

Description

Technical Field

[0001] This invention relates to the field of wind turbine technology, and more particularly to a floating multi-unit combined wind turbine. Background Technology

[0002] Existing floating wind turbines generally rely solely on wind power for electricity generation. However, in strong winds, normal power generation is often impossible to achieve in order to protect the turbine structure, resulting in a significant amount of clean energy remaining unutilized. Furthermore, maintaining the overall stability and wave resistance of floating wind turbines typically requires a large and heavy floating base, or complex stabilization devices or structures, making existing floating wind turbines structurally complex and costly. Therefore, how to collect clean energy more broadly, simplify the structure of floating wind turbines, and reduce their construction costs are urgent technical problems that those skilled in the art need to solve. Summary of the Invention

[0003] To address at least one of the aforementioned technical problems, this invention proposes a floating multi-unit combined wind turbine, which improves the operating range of the floating wind turbine, simplifies its structure, reduces its construction cost, thereby increasing its power generation and facilitating the improvement of clean energy adoption.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A floating multi-unit combined wind turbine includes a base capable of floating on water, at least one anchor chain, at least two generators, a transmission assembly, wind turbine blades, and a base power generation assembly, wherein... The base is floating on the water surface and fixed in relative position by at least one anchor chain; the at least two generators include a wind turbine generator and a base generator. The wind turbine generator is connected to the wind turbine blades through the transmission assembly. The wind turbine blades include a rotating shaft and at least two evenly distributed sub-blades. The wind turbine blades rotate around their rotating shaft under the action of wind force, and drive the wind turbine generator to rotate through the transmission assembly to generate electrical energy. The base power generation component is driven to at least one of the base generators. The base power generation component drives at least one of the base generators to rotate by the swinging motion and / or translational motion of the base around its center, thereby generating electrical energy.

[0005] Preferably, the base power generation component is a gear and rack assembly, wherein the gear assembly is driven to the base generator, and the rack assembly is driven to the anchor chain. When the base swings and / or translates around its center, the anchor chain drives the rack assembly to reciprocate in the tangential direction of the gear assembly, thereby driving the base generator to rotate and generate electrical energy.

[0006] Preferably, the system also includes a turbine, and the at least two generators further include turbine generators. The base is divided into an equipment compartment and a ballast water compartment. The equipment compartment is used to fix the generators and the transmission components. The ballast water compartment contains a portion of ballast water to add counterweight to the base. The turbine is disposed in the ballast water compartment and is driveably connected to at least one of the turbine generators. The turbine rotates under the action of the ballast water, driving at least one of the turbine generators to rotate and generate electrical energy.

[0007] Preferably, it further includes a water level regulating component, which is used to controllably connect the ballast water tank and the outside of the base to controllably regulate the water level of the ballast water.

[0008] Preferably, the fan blade is a vertical axis fan blade, and the rotation axis is integrally formed with the sub-blade.

[0009] Preferably, the number of the sub-blades is 3, and their shape and size remain consistent along the axial direction of the rotation axis.

[0010] Preferably, the sub-blade is arc-shaped along the diametrical direction of the rotation axis.

[0011] Preferably, the transmission assembly includes at least one of shaft drive, chain drive, belt drive, gear drive, magnetic coupling drive, hydraulic drive, gear rack drive, and ratchet pawl drive, with one end connected to the wind turbine blades and the other end connected to the generator input shaft.

[0012] Preferably, the generator and the transmission assembly are fixedly positioned relative to the base, and the wind turbine blades are movably connected to one end of the transmission assembly.

[0013] Preferably, the rotating shaft is a shaft mounting through hole, and at least one cross-section of the shaft mounting through hole is non-circular, for transmission connection with one end of the transmission component passing through it; or, At least one end of the fan blade is provided with a groove or through hole around the rotation axis for transmission connection with one end of the transmission assembly to transmit the rotational torque of the fan blade.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention discloses a floating multi-unit combined wind turbine generator. By configuring the wind turbine blades and the wind turbine generator, the base power generation component and the base generator, the floating multi-unit combined wind turbine generator can not only generate electricity by capturing wind power, but also generate electricity by using the base power generation component to drive the base generator when the wind and waves are large, causing the base to sway and / or move. This greatly expands the working range of the floating multi-unit combined wind turbine generator, and also improves the stability of the base under large wind and waves. The structure is simple, reliable, and low in cost, making it easy to build and popularize on a large scale, thereby improving the utilization rate of clean energy. Attached Figure Description

[0015] Figure 1 This is a structural cross-sectional view of a floating multi-machine combined wind turbine according to an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the operation of the wind turbine blades of a floating multi-machine combined wind turbine generator according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of a floating multi-machine combined wind turbine generator according to an embodiment of the present invention.

[0018] In the diagram: 1-base, 2-anchor chain, 3-generator, 4-transmission assembly, 5-wind turbine blade, 8-lifting assembly, 9-end cover, 10-turbine, 11-water level regulating assembly, 12-gear assembly, 21-reset structure, 22-rack assembly, 23-reset rack structure, 24-fixed anchor chain, 41-transmission coupling assembly, 42-drive shaft, 51-rotating shaft, 52-sub-blade. Detailed Implementation

[0019] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses or methods consistent with some aspects of this application as detailed in the appended claims.

[0020] In this invention, the term "upper end" should be understood to include the upper part or top, and "lower end" should be understood to include the lower part or bottom. Both "upper end" and "lower end" only indicate relative arrangement with respect to the accompanying drawings. In this invention, the terms "first" and "second" are merely used to distinguish different structures or functions and do not represent a chronological order or degree of importance.

[0021] like Figures 1-3As shown, a floating multi-unit combined wind turbine includes a base 1 that can float on the water surface, at least one anchor chain 2, at least two generators 3, a transmission assembly 4, wind turbine blades 5, and a base power generation assembly, wherein... The base 1 is floating on the water surface and is fixed in relative position by at least one anchor chain 2; the at least two generators 3 include a wind turbine generator and a base generator. The wind turbine generator is connected to the wind turbine blades 5 through the transmission assembly 4. The wind turbine blades 5 include a rotating shaft 51 and at least two evenly distributed sub-blades 52. The wind turbine blades 5 rotate around their rotating shaft 51 under the action of wind force, and drive the wind turbine generator to rotate through the transmission assembly 4 to generate electrical energy. The base power generation component is driven to at least one of the base generators. The base power generation component drives at least one of the base generators to rotate by the swinging motion and / or translational motion of the base 1 around its center, thereby generating electrical energy.

[0022] Specifically, the base 1 can be a hexahedron, cylinder, cone, or other irregular object, as long as it can float on the water surface. Preferably, the base 1 is a cone with a smaller lower section and a larger upper section. Compared to a hexahedron floating base, it distributes the force more evenly and has higher structural strength. Compared to a cylindrical floating base, it has a greater draft, more balanced force, more stable floating, and better anti-overturning performance. The anchor chain 2 can be one, two, or more. The specific number of anchor chains 2 can be determined according to the total weight and volume of the floating multi-unit combined wind turbine, the wind force, the water flow thrust, and the underwater geological conditions. The base 1 can be relatively fixed to the water surface by at least one anchor chain to prevent it from being pushed away from the preset position by the wind or water flow.

[0023] The base generator assembly can be a pendulum assembly, wherein one end of the pendulum assembly is connected to the input shaft of the base generator, and the other end is connected to a weight through a connecting rod. The base generator is fixed to the base 1. When the base 1 sways under the action of wind and waves, the weight in the pendulum assembly remains stationary under the action of inertia, thereby causing the connecting rod in the pendulum assembly to rotate relative to the base 1, thereby driving the base generator fixedly connected to the base 1 to rotate and generate electricity.

[0024] Preferably, the base power generation component is a gear and rack assembly, wherein the gear assembly 12 is driven to the base generator, and the rack assembly 22 is driven to the anchor chain 2. When the base 1 swings and / or translates around its center, the anchor chain 2 drives the rack assembly 22 to reciprocate in the tangential direction of the gear assembly 12, thereby driving the base generator to rotate and generate electrical energy.

[0025] Specifically, such as Figure 1 As shown, the base power generation components are all unidirectional gear and rack assemblies. This unidirectional transmission means that when the rack assembly 22 moves along one direction of the tangent to the gear assembly 12, the rack assembly 22 can drive the gear assembly 12 to rotate; when it moves along the other direction of the tangent, the rack assembly 22 cannot drive the gear assembly 12 to rotate. This design ensures that the base generator always rotates in one direction, eliminating the need for frequent reversals that could lead to energy loss and mechanical impact, thus improving energy conversion efficiency and extending the structural lifespan. Of course, the base power generation components can also be bidirectional gear and rack assemblies; this is not a limitation.

[0026] like Figure 1 As shown, the base power generation assembly also includes a set of reversing wheels, a reset structure 21, a reset rack assembly 23, and a fixed anchor chain 24. The gear assembly 12 is driven by the base generator. The reset structure 21, the unidirectional rack assembly 22, and the reset rack assembly 23 are all driven by the fixed anchor chain 24. The unidirectional rack assembly 22 and the reset rack assembly 23 achieve opposite movement directions in the tangential direction of the gear assembly 12 through a set of reversing wheels, thereby enabling the unidirectional rack assembly 22 and the reset rack assembly 23 to drive the gear assembly 12 to rotate in the same direction during reciprocating motion. The reset structure 21 can be a weight driven by the fixed anchor chain 24. When the fixed anchor chain 24 is stretched due to the swaying motion and / or translational motion of the base 1, such as... Figure 1 As shown in the left half of the diagram, on one hand, the rack assembly 22 moves along the tangential direction of the gear assembly 12, driving the gear assembly to rotate clockwise, which in turn drives the base generator to rotate and generate electrical energy. On the other hand, through the set of reversing wheels, the reset rack assembly 23 is driven to move in the opposite direction to reset, and at the same time, the weight of the reset structure 21 is driven to rise, increasing the gravitational potential energy of the weight. Conversely, when the fixed anchor chain 24 is compressed due to the swaying motion and / or translational motion of the base 1, such as Figure 1 As shown in the right half of the diagram, on one hand, the weight of the reset structure 21 descends, reducing its gravitational potential energy. On the other hand, the reset rack assembly 23 moves along the tangential direction of the gear assembly 12, driving the gear assembly to rotate clockwise, which in turn drives the base generator to rotate, generating electrical energy. Simultaneously, through the set of reversing wheels, the rack assembly 22 is driven to move in the opposite direction to reset. Of course, the reset structure 21 can also be an elastic reset structure, such as a spring reset structure, etc., which is not limited here, as long as it can achieve the energy storage reset function.

[0027] The base power generation assembly and the base generator can be in one set, relying on the swaying and / or translational motion of the base 1 to stretch the fixed anchor chain 24 and the reset structure 21 to release energy, thereby driving the gear assembly 12 to rotate, and thus driving the base generator to generate electricity; or there can be two sets, wherein the two sets of base power generation assemblies and base generators can be arranged on the same plane, thereby achieving the following: Figure 1 As shown, it achieves the effect of stretching and resetting simultaneously; it can also be set in a cross plane, thereby enabling the base 1 to effectively capture and generate electricity from swinging and / or moving movements in all directions, thus improving power generation efficiency.

[0028] Preferred, such as Figure 2 and 3 As shown, there are four sets of base power generation components and base generators, arranged in pairs on the same plane, with the two sets intersecting each other. This is to capture and generate electricity from the omnidirectional swaying motion energy and / or moving motion energy of the base 1, thereby improving the power generation capacity and efficiency of the floating combined multi-stage wind turbine.

[0029] Preferably, the floating multi-unit combined wind turbine further includes a turbine 10, and the at least two generators 3 further include turbine generators. The base 1 is internally divided into an equipment compartment and a ballast water compartment. The equipment compartment is used to fix the generators 3 and the transmission assembly 4. The ballast water compartment contains a portion of ballast water to add counterweight to the base 1. The turbine 10 is disposed in the ballast water compartment and can be driven to at least one of the turbine generators. The turbine 10 rotates under the action of the ballast water, driving at least one of the turbine generators to rotate and generate electrical energy.

[0030] Specifically, the base 1 is internally divided into an equipment compartment and a ballast water tank. The equipment compartment and the ballast water tank can be arranged vertically, with the equipment compartment located above the ballast water tank. This arrangement lowers the center of gravity of the base 1, improving its stability, and also facilitates the installation and maintenance of equipment within the equipment compartment. Alternatively, the equipment compartment and the ballast water tank can be distributed internally and externally, with the equipment compartment located inside the ballast water tank. This arrangement protects the equipment compartment from water ingress and damage to the machinery in the event of a collision or runaway impact on the base 1, and also reduces the draft of the base 1, allowing the floating multi-unit combined wind turbines to be distributed over a wider area of ​​water. Furthermore, it increases the depth difference of the ballast water on both sides of the turbine when the base sways due to wind and waves, increasing the power generation generated by the ballast water passing through the turbine. Finally, the equipment compartment and the ballast water tank can be mixed, with the ballast water tank distributed around the perimeter and bottom of the equipment compartment. This arrangement combines the advantages of both of the above distribution methods. Of course, the distribution of the equipment compartment and the ballast water compartment can also be in other ways, which will not be elaborated on here.

[0031] Preferably, the ballast water tank is disposed at the bottom and / or around the base 1, and the turbine 10 is disposed at the bottom of the ballast water tank to divide the ballast water tank into at least two interconnected opposing parts.

[0032] The number of generators 3 in the equipment compartment can be two, three, or more. When there are two generators 3, one side of the wind turbine generator or the base generator is connected to the wind turbine blades 5 via the transmission assembly 4, or to the anchor chain 2 via the base generator assembly. This allows the wind turbine blades 5 to drive the wind turbine generator to generate electricity under wind power, or the base generator assembly to drive the base generator to generate electricity based on the swaying and / or translational motion of the base 1 around its center. The other side of the wind turbine generator or the base generator is connected to the turbine 10, allowing the turbine 10 to drive the wind turbine generator or the base generator to generate electricity simultaneously under the impact of ballast water flow. This configuration reduces the amount of equipment needed to construct the floating multi-generator combined wind turbine, lowers the cost, and increases reliability. When there are three generators 3, they can be divided into wind turbines... The system comprises a generator, a base generator, and a turbine generator. The working principles of the wind turbine generator and the base generator are not detailed here. The turbine generator is driven by the turbine 10, allowing the turbine 10 to drive the turbine generator to generate electricity under the impact of ballast water flow. This arrangement increases the overall power output of the three generators while improving power generation efficiency, resulting in more precise control over wind power generation, base swaying and / or moving power generation, and turbine power generation. Alternatively, the equipment compartment can contain four generators, with two turbine generators arranged side-by-side, driven by two intersecting turbines 10. This allows the intersecting turbines 10 to effectively capture the swaying energy of the base in any direction, increasing the overall power output of the floating multi-generator combined wind turbine generator. Furthermore, the number of generators 3 can be increased through other combination methods, which will not be elaborated upon here.

[0033] Preferably, it further includes a water level regulating component 11, which is used to controllably connect the ballast water tank and the outside of the base 1, and controllably regulate the water level of the ballast water.

[0034] Specifically, the ballast water tank contains a portion of ballast water to add counterweight to the base 1. The ballast water in the tank is not completely full. This is to prevent the ballast water from freezing and causing stress damage to the tank's structure, and also to allow the ballast water to flow within the tank as the base 1 sways and / or moves, thereby driving the turbine 10 to generate electricity. Meanwhile, the ballast water in the ballast water tank can be injected into the ballast water tank all at once during the construction and maintenance of the floating multi-turbine combined wind turbine, and then sealed. This arrangement simplifies the structure and improves structural stability. Alternatively, the ballast water in the ballast water tank can be injected into the ballast water tank in real time from outside the base 1 by a water level regulating component installed in the base 1. The water level regulating component is used to controllably connect the ballast water tank and the outside of the base 1. This arrangement allows the floating multi-turbine combined wind turbine to discharge some of the ballast water in the ballast water tank when the wind force is low, thereby reducing the total weight of the floating wind turbine. On the one hand, it can reduce the draft of the base 1 and increase the windward height of the turbine blades 5, thereby increasing the wind energy captured by the turbine blades 5. On the other hand, it can raise the center of gravity of the floating multi-turbine combined wind turbine, increase the swaying / movement range of the base 1, thereby increasing the power generation of the turbine from the ballast water flow and the power generation of the base generator from the swaying / movement range of the base 1. When the wind is strong, some of the ballast water in the ballast tank is injected to increase the total weight of the floating wind turbine. On the one hand, this can increase the draft of the base 1 and reduce the windward height of the turbine blades 5, thereby reducing the wind energy captured by the turbine blades 5 and protecting the turbine blades 5. On the other hand, it can lower the center of gravity of the floating multi-unit combined wind turbine and reduce the swaying / movement amplitude of the base 1, thereby protecting the floating multi-unit combined wind turbine and preventing it from overturning.

[0035] Preferably, the floating multi-unit combined wind turbine further includes a water level regulating component, which is used to controllably connect the ballast water tank and the outside of the base 1 to controllably regulate the water level of the ballast water.

[0036] Specifically, the water level regulating component can be a bidirectional water pump assembly, used to pump water from outside the base 1 into the ballast water tank according to control requirements to increase the ballast water, or to discharge ballast water from the ballast water tank out of the base 1 according to control requirements to decrease the ballast water. The water level regulating component can also be a solenoid valve and an air conditioning assembly, wherein the solenoid valve is located at the lower part of the ballast water tank and the air conditioning assembly is located at the upper part of the ballast water tank. When it is necessary to inject ballast water into the ballast water tank, the solenoid valve and the air conditioning assembly are opened, so that water outside the base 1 flows into the ballast water tank under the action of external water pressure to increase the ballast water. When it is necessary to discharge the ballast water, the solenoid valve is opened and compressed air is injected into the ballast water tank through the air conditioning assembly, so that the ballast water inside the ballast water tank is discharged from the ballast water tank under the action of internal air pressure to decrease the ballast water. Of course, the water level regulating component can also be other water level regulating components, as long as it can achieve controllable injection or discharge of the ballast water.

[0037] Preferably, the fan blade 5 is a vertical axis fan blade, and the rotating shaft 51 and the sub-blade 52 are integrally formed.

[0038] Specifically, the wind turbine blades 5 can be horizontal-axis, vertical-axis, or tilted-axis blades. However, since horizontal-axis and tilted-axis blades are directional, they can only capture wind energy from one direction and cannot effectively capture wind energy from other directions. Therefore, they need to be used in conjunction with a wind direction tracking component to achieve omnidirectional wind energy capture. Vertical-axis blades, where the rotation axis 51 of the blades 5 is perpendicular to the horizontal plane, allow the base 1, generator 3, and transmission assembly 4 to be located at the bottom of the blades 5. This significantly lowers the overall structural center of gravity of the floating multi-machine combined wind turbine, improving structural stability and reducing construction and maintenance costs. It also reduces the volume and weight requirements of the base 1, further lowering construction costs. The structure is simple, reliable, small in size, and low in cost, facilitating the construction and widespread adoption of the floating multi-machine combined wind turbine. Meanwhile, the vertically arranged rotating shaft 51 and the sub-blades 52 can capture wind energy from all horizontal directions simultaneously without any adjustment, eliminating the wind direction tracking mechanism required for wind turbines with horizontal axis blades, simplifying the structure, reducing costs, and improving structural reliability.

[0039] More specifically, the generator 3 is fixedly mounted on the base 1, which can be mounted on the upper surface, middle, or inner bottom of the base 1, preferably on the inner bottom of the base 1, to minimize the center of gravity of the floating multi-unit combined wind turbine and improve its stability. The generator 3 is connected to the wind turbine blades 5 via the transmission assembly 4. This connection can be a direct transmission connection, such as fixing the wind turbine blades 5 to one end of the input shaft of the generator 3 through a transmission structure to ensure transmission efficiency; or an indirect transmission connection, such as connecting the generator 3 to the wind turbine blades 5 via a coupling, hydraulic coupling, or magnetic coupling, to reduce mechanical impact on the generator 3 and extend its service life.

[0040] Preferably, the transmission component 4 includes at least one of shaft drive, chain drive, belt drive, gear drive, magnetic coupling drive, hydraulic drive, gear rack drive, and ratchet pawl drive, with one end connected to the fan blade 5 and the other end connected to the input shaft of the generator 3.

[0041] More preferably, such as Figure 1 The transmission assembly 4 includes a transmission shaft 42 and a transmission coupling assembly 41. The transmission shaft 42 is connected to the rotating shaft 51 of the wind turbine blade 5. One end of the transmission coupling assembly 41 is connected to the transmission shaft 42, and the other end is connected to the input shaft of the generator 3. This enables the generator 3 to be connected to the wind turbine blade 5 through the transmission assembly 4. The structure is extremely simple and reliable, small in size and low in cost, which facilitates the construction and popularization of the floating multi-unit combined wind turbine generator.

[0042] The number of sub-blades 52 in the fan blade 5 can be 2, 3, or more. The shape of the sub-blades 52 can be a planar shape that passes through or is parallel to the rotation axis 51, or it can be arc-shaped, spiral-shaped, semi-circular, etc. The connection method between the sub-blades 52 and the rotation axis 51 can be a detachable connection, such as a plug-in connection, tenon-and-mortise connection, bolt and nut connection, etc., or a non-detachable connection, such as welding, riveting, etc. To reduce production costs, preferably, the sub-blade 52 and the rotating shaft 51 are integrally formed. The specific integral forming method can be any one or more of the following: stamping, casting, die casting, forging, injection molding, blow molding, vacuum forming, extrusion, wire drawing, 3D printing, powder metallurgy, etc. Other integral forming methods will not be listed here. The wind turbine blade 5 produced by the integral forming process has a simple structure, high strength, simple production, high standardization, low cost, and is easy to mass-produce. This greatly reduces the construction cost of the floating multi-unit combined wind turbine generator with the wind turbine blade 5 installed, and facilitates the construction and popularization of the floating multi-unit combined wind turbine generator.

[0043] Preferably, the number of the sub-blades 52 is 3, and their shape and size are consistent along the axial direction of the rotation axis 51.

[0044] Setting three sub-blades 52, compared to setting two sub-blades 52, can significantly improve the structural strength and rigidity of the wind turbine blade 5, increase the service life and structural reliability of the wind turbine blade 5, and compared to setting four or more sub-blades 52, can reduce material usage, reduce structural weight, and improve power generation efficiency.

[0045] Meanwhile, the consistent shape and size of the sub-blades 52 along the axial direction of the rotation axis 51 ensures the consistency of strength and stiffness of the sub-blades 52 along the axial direction of the rotation axis 51, thereby guaranteeing the stability and reliability of the structure. Furthermore, the consistent shape and size of the sub-blades 52 along the axial direction of the rotation axis 51 facilitates the rapid one-time molding of larger wind turbine blades 5 using integrated molding methods such as extrusion. This allows for the rapid production of larger wind turbine blades 5 at extremely low production costs, thereby increasing the power generation of the floating multi-unit combined wind turbine generator and further improving the construction efficiency and the penetration rate of clean energy.

[0046] Preferably, the sub-blade 52 is arc-shaped along the diameter direction of the rotation axis 51.

[0047] This configuration can improve the wind energy conversion efficiency of the wind turbine blades 5 to a certain extent, thereby increasing wind energy utilization. It also improves the strength and rigidity of the integrally molded sub-blades 52, thus enhancing the structural reliability of the wind turbine blades 5 and reducing the operating and maintenance costs of the floating multi-unit combined wind turbine generator.

[0048] Preferably, the transmission assembly 4 further includes at least one external transmission interface for transmitting the transmission between at least two of the wind turbine blades 5 or at least two of the floating multi-unit combined wind turbine generators.

[0049] Specifically, the external transmission interface can be a synchronous pulley, belt pulley, sprocket, gear, drive shaft, or other transmission structure. The external transmission interface can be connected to the wind turbine blade 5. For example, the transmission structure of the external transmission interface can be fixedly set at one end of the wind turbine blade 5, thereby realizing the transmission connection of at least two wind turbine blades 5. This allows at least two wind turbine blades 5 to rotate simultaneously and at the same speed, driving the same generator 3. This reduces the speed impact of local gusts on a single wind turbine blade 5, improves the service life of the floating multi-unit combined wind turbine generator, and also increases the windward area of ​​the blades of the floating multi-unit combined wind turbine generator. Thus, by using the external transmission interface to connect at least two wind turbine blades 5, the overall wind energy capture of the floating multi-unit combined wind turbine generator is increased, thereby increasing the wind power generation.

[0050] Correspondingly, the external transmission interface can also be connected to the transmission component 4. For example, if the transmission structure of the external transmission interface is fixedly set outside the transmission shaft, the above-mentioned technical effects can also be achieved, which will not be elaborated here.

[0051] The external transmission interface can also be configured to drive at least two of the floating multi-unit combined wind turbines. At the same time, by scientifically and rationally distributing the floating multi-unit combined wind turbines in a matrix, the overall wind energy capture of the at least two floating multi-unit combined wind turbines connected through the external transmission interface can be increased, thereby increasing the wind power generation.

[0052] Preferably, the external transmission interface is a transmission shaft assembly, and at least one end of the transmission shaft assembly is a universal joint structure for transmission connection with the external wind turbine blades 5 or the floating multi-unit combined wind turbine generator.

[0053] Specifically, since the base 1 floats on the water surface, the position of the floating multi-unit combined wind turbine cannot be completely fixed. Furthermore, due to the undulating water surface, the tilt angle of each floating turbine is not exactly the same at any given moment. Therefore, to ensure the transmission stability and reliability of the external transmission interface 6, simplify the transmission structure, and improve structural strength, a transmission shaft assembly is used to connect and transmit power between the floating multi-unit combined wind turbines. One end of the transmission shaft assembly is connected to the transmission shaft in the transmission assembly 4 via a gear set, and the other end is connected to the universal joint structure of the external transmission interface of other floating multi-unit combined wind turbines via a universal joint structure. This achieves both a simple, stable, and reliable connection between two or more floating multi-unit combined wind turbines and stable transmission when two or more floating multi-unit combined wind turbines are at different tilt angles.

[0054] Preferably, the external transmission interface further includes a positioning component for fixing the relative positions of at least two wind turbine blades 5 or at least two floating multi-unit combined wind turbines that are connected to each other in a transmission manner.

[0055] Specifically, at least one of the external transmission interfaces is rotatable around the rotation axis 51 of the wind turbine blade 5. This arrangement facilitates the connection of other floating multi-unit combined wind turbines distributed around the floating multi-unit combined wind turbine through the external transmission interface. However, to maintain the relative position of the two floating multi-unit combined wind turbines connected by the external transmission interface and to prevent the anchor chains 2 used to fix the floating multi-unit combined wind turbines from tangling, a positioning component for positioning the external transmission interface is also provided at the relative position between the base 1 and the external transmission interface. This positioning component can be a bolt or nut with a fixed interval angle, requiring manual adjustment and tightening, or it can be a positioning component that uses an electromagnetic adsorption structure for stepless adjustment and adsorption fastening. This arrangement ensures that the floating multi-unit combined wind turbines connected by the external transmission interface are fixed in position to each other, preventing them from floating randomly under the action of wind and water flow, and avoiding entanglement and damage to the anchor chains 2, thereby improving the structural reliability of the floating multi-unit combined wind turbine.

[0056] Preferably, the external transmission interface further includes an angle adjustment component, which is used to adjust the relative positions of at least two wind turbine blades 5 or at least two floating multi-unit combined wind turbines that are connected to each other in a transmission manner.

[0057] Specifically, each of the aforementioned floating multi-unit combined wind turbines includes two external transmission interfaces. At least one of the two transmission interfaces can rotate around the rotation axis 51 of the wind turbine blade 5 under the drive of the angle adjustment component. The angle adjustment component can be a drive gear ring structure, which is coaxially arranged with the rotation axis of the external transmission interface. One of the external transmission interfaces is fixed at a point on the drive gear ring. The drive gear ring rotates under the drive of a drive motor, causing the external transmission interface fixed at that point to rotate, thereby achieving angle adjustment between the two external transmission interfaces. By adjusting the angle between the external transmission interfaces, multiple combined floating multi-unit combined wind turbines can be arranged in a straight line along the wind direction during strong winds, so as to minimize the windward area of ​​the multiple combined floating multi-unit combined wind turbines and reduce the degree of damage to the floating multi-unit combined wind turbines by strong winds. Meanwhile, in weak wind conditions, multiple floating multi-unit combined wind turbines can be arranged into a triangle with openings facing the wind direction to maximize wind energy capture and power generation, thereby increasing the total power generation of the multiple floating multi-unit combined wind turbines.

[0058] Preferably, the generator 3 and the transmission assembly 4 are fixedly positioned relative to the base 1, and the fan blade 5 is movably connected to one end of the transmission assembly 4.

[0059] Specifically, such as Figure 1 , 2 As shown, the wind turbine blades 5 can move up and down on the transmission shaft in the transmission assembly 4 under the action of the lifting assembly 8. This allows the floating multi-unit combined wind turbine generator to capture high-altitude wind energy and increase wind power generation when the low-altitude wind force is small, by raising the wind turbine blades 5. At the same time, when the high-altitude wind force is large, the wind turbine blades 5 can be partially or completely lowered to protect the structure of the floating multi-unit combined wind turbine generator, thereby improving the service life of the floating multi-unit combined wind turbine generator.

[0060] The lifting assembly 8 can be a hydraulic lifting assembly, a connecting rod lifting assembly, a pulley lifting assembly, a rope traction lifting assembly, a gear and rack lifting assembly, a worm gear lifting assembly, an electromagnetic lifting assembly (linear motor), or other linear lifting assemblies. There is no limitation on these assemblies, as long as they can achieve the lifting function of the fan blades 5.

[0061] More preferably, the floating multi-unit combined wind turbine generator may further include end caps 9, which may be disposed at the upper and lower ends of the wind turbine blades 5, to seal the opening of the base 1 when the wind turbine blades 5 are raised and / or lowered, preventing rainwater, lake water, river water, seawater, dust or animals such as birds from entering the interior of the base 1 and affecting the normal operation of the floating multi-unit combined wind turbine generator, thereby improving the reliability of the floating multi-unit combined wind turbine generator, reducing the maintenance cost of the floating multi-unit combined wind turbine generator, and increasing the service life of the floating multi-unit combined wind turbine generator.

[0062] In another preferred embodiment, the floating multi-unit combined wind turbine further includes a lifting assembly 8 and a generator base. The generator base is movable relative to the base 1 via the lifting assembly 8. The generator 3, the transmission assembly 4, and the wind turbine blades 5 are fixedly positioned relative to the generator base.

[0063] Specifically, in the floating multi-unit combined wind turbine generator, one end of the lifting assembly 8 is fixedly connected to the base 1, and the other end is fixedly connected to the generator base. The generator 3, the transmission assembly 4, and the wind turbine blades 5 are all fixed in relative position to the generator base. When the low-altitude wind force is small, the generator base is raised by the lifting assembly 8, thereby raising the wind turbine blades 5, enabling the floating multi-unit combined wind turbine generator to capture high-altitude wind energy and increase wind power generation. At the same time, when the high-altitude wind force is large, the generator base can be lowered by the lifting assembly 8, thereby lowering the generator 3, transmission assembly 4, and wind turbine blades 5 together, better protecting the structure of the floating multi-unit combined wind turbine generator, thereby increasing its service life. It also lowers the overall structural center of gravity of the floating multi-unit combined wind turbine generator, improving its stability under high wind force.

[0064] Preferably, the rotating shaft 51 is a rotating shaft mounting through hole, and at least one cross-section of the rotating shaft mounting through hole is non-circular, for transmission connection with one end of the transmission component 4 passing through it.

[0065] Specifically, the rotating shaft 51 is a through hole for shaft mounting, which facilitates the extrusion molding of the integral blade. At the same time, the central through hole of the fan blade 5 also helps to reduce the amount of processing material and reduce the processing and manufacturing cost. Compared with the rotating shaft 51 being a solid structure, the fan blade 5 has higher strength, rigidity and longer service life under the same material usage.

[0066] The rotating shaft 51 can have all non-circular cross sections, which facilitates the one-time extrusion molding of the fan blades 5. By setting a rotating shaft with a cross section corresponding to the rotating shaft mounting through hole, the transmission connection between the fan blades 5 and the transmission assembly 4 is realized, resulting in low processing costs.

[0067] Optionally, the shaft mounting through hole of the rotating shaft 51 can be made circular in all cross sections during extrusion molding, which facilitates the one-time extrusion molding of the fan blade 5. Subsequently, at least one non-circular cross section can be processed by secondary processing at one or both ends of the shaft mounting through hole of the rotating shaft 51. Then, by setting the rotating shaft 32 corresponding to the non-circular cross section of the shaft mounting through hole, the transmission connection between the integrated blade and the transmission assembly 4 can be realized. The processing accuracy is high, which reduces the overall processing accuracy requirements of the fan blade 5 and the rotating shaft, thereby reducing the processing cost.

[0068] Preferably, at least one end of the fan blade 5 is provided with a groove or through hole around the rotation axis 51 for transmission connection with one end of the transmission assembly 4 to transmit the rotational torque of the fan blade 5.

[0069] Specifically, the rotating shaft 51 can be a solid rotating shaft or a circular cross-section through hole, but at least one end of the fan blade 5 is provided with at least one groove or through hole around the rotating shaft 51, which is used to cooperate with the protrusions provided around the transmission shaft of the transmission assembly 4 to realize the transmission connection between the integrated blade and the transmission assembly and transmit the rotational torque of the fan blade 5.

[0070] The specific embodiments of the present invention have been described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to this utility model are also within the scope of the present invention. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered within the scope of the present invention.

Claims

1. A floating multi-unit combined wind turbine generator, characterized in that, Includes a floating base (1), at least one anchor chain (2), at least two generators (3), a transmission assembly (4), wind turbine blades (5), and a base-mounted power generation assembly, wherein, The base (1) is floating on the water surface and is fixed in relative position by the at least one anchor chain (2); the at least two generators (3) include a wind turbine generator and a base generator. The wind turbine generator is connected to the wind turbine blade (5) through the transmission assembly (4). The wind turbine blade (5) includes a rotating shaft (51) and at least two evenly distributed sub-blades (52). The wind turbine blade (5) rotates around its rotating shaft (51) under the action of wind force, and drives the wind turbine generator to rotate through the transmission assembly (4) to generate electrical energy. The base power generation component is driven to at least one of the base generators. The base power generation component drives at least one of the base generators to rotate by the swinging motion and / or translational motion of the base (1) around its center, thereby generating electrical energy.

2. The floating multi-unit combined wind turbine generator as described in claim 1, characterized in that, The base power generation component is a gear and rack assembly, wherein the gear assembly (12) is connected to the base generator in a transmission connection, and the rack assembly (22) is connected to the anchor chain (2) in a transmission connection. When the base (1) swings and / or translates around its center, the anchor chain (2) drives the rack assembly (22) to reciprocate in the tangential direction of the gear assembly (12), thereby driving the base generator to rotate and generate electrical energy.

3. The floating multi-unit combined wind turbine generator as described in claim 1, characterized in that, It also includes a turbine (10), and the at least two generators (3) also include turbine generators. The base (1) is divided into an equipment compartment and a ballast water compartment. The equipment compartment is used to fix the generators (3) and the transmission assembly (4). The ballast water compartment contains some ballast water to add counterweight to the base (1). The turbine (10) is set in the ballast water compartment and can be driven to at least one of the turbine generators. The turbine (10) rotates under the action of the ballast water, driving at least one of the turbine generators to rotate and generate electrical energy.

4. The floating multi-unit combined wind turbine generator as described in claim 3, characterized in that, It also includes a water level regulating component (11), which is used to controllably connect the ballast water tank and the outside of the base (1) to controllably regulate the water level of the ballast water.

5. The floating multi-unit combined wind turbine generator as described in claim 1, characterized in that, The fan blade (5) is a vertical axis fan blade, and the rotating shaft (51) and the sub-blade (52) are integrally formed.

6. The floating multi-unit combined wind turbine generator as described in claim 1, characterized in that, The number of the sub-blades (52) is 3, and their shape and size are consistent along the axis of the rotation axis (51).

7. The floating multi-unit combined wind turbine generator as described in claim 6, characterized in that, The sub-blade (52) is arc-shaped along the diameter direction of the rotation axis (51).

8. The floating multi-unit combined wind turbine generator as described in claim 1, characterized in that, The transmission component (4) includes at least one of shaft transmission, chain transmission, belt transmission, gear transmission, magnetic coupling transmission, hydraulic transmission, gear and rack transmission, and ratchet and pawl transmission. One end is connected to the fan blade (5) and the other end is connected to the input shaft of the generator (3).

9. The floating multi-unit combined wind turbine generator as described in claim 1, characterized in that, The generator (3) and the transmission assembly (4) are fixedly positioned relative to the base (1), and the fan blade (5) is movably connected to one end of the transmission assembly (4).

10. The floating multi-unit combined wind turbine generator as described in any one of claims 1 to 9, characterized in that, The rotating shaft (51) is a shaft mounting through hole, at least one cross-section of which is non-circular, for transmission connection with one end of the transmission assembly (4) passing through it; or, At least one end of the fan blade (5) is provided with a groove or through hole around the rotation axis (51) for transmission connection with one end of the transmission assembly (4) to transmit the rotational torque of the fan blade (5).

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