Offshore power generation equipment utilizing photovoltaic, wind energy and tidal current energy

Abstract

The invention discloses offshore power generation equipment utilizing photovoltaic energy, wind energy and tidal current energy, which comprises a fan power generation device, a telescopic tower drum assembly, a power generation part, a power transmission device and a power transmission device, the fan blade part is arranged at the axial top of the telescopic tower drum assembly in a circumferential rotation manner and is connected with the power generation part; provided is a photovoltaic power generation device. Therefore, the telescopic tower barrel assembly selectively stretches out and draws back to drive the fan blade piece to stretch out of the sea surface or retract into the sea according to different sea conditions, and therefore the fan power generation device can generate power through wind energy on the sea or tidal current under the sea, and photovoltaic power generation can also be achieved through the photovoltaic power generation device; the offshore power generation equipment can utilize various clean energy to efficiently generate power, the position of the fan power generation device can be adjusted according to different sea conditions, the damage risk of the fan power generation device can be reduced, and the service life of the offshore power generation equipment can be prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation equipment, and in particular to offshore power generation equipment utilizing photovoltaic energy, wind energy and tidal energy. Background Art

[0002] The vast ocean contains abundant clean and renewable energy, and its development and utilization plays an important role in promoting global energy transformation. Compared with traditional land energy development, the use of marine energy can effectively avoid problems such as land occupation and noise caused by the installation of facilities, and can also reduce interference with the ecological environment. Therefore, the efficient development of marine energy has become a strategic focus for the development of major coastal countries. At present, the development of marine energy is diverse, among which the main ones with large-capacity development potential include offshore photovoltaics, wave energy, and ocean current energy development. While making full use of the natural conditions of the ocean, these technologies have promoted the innovative development of clean energy technologies and provided a strong impetus for achieving global sustainable development goals.

[0003] my country's patent (announcement number: CN114483452A; announcement date: 2022.05.13) discloses an offshore power generation device that integrates ocean energy, photovoltaics and wind energy. The offshore power generation device consists of wind turbine blades, wind turbine towers, solar photovoltaic panels, box-type support truss structures, wave energy power generation equipment, wind turbine floating foundations and tidal energy power generation equipment. The box-type truss structure includes a top railing, a box-type ring beam and a box-type straight beam. The wind turbine blades and wind turbine tower constitute a wind power generation device, which is located at the top of the device. Taking into account the requirements of economy and overall flexibility of the device, the wind turbine equipment uses a small unit with mature technology at present. The solar photovoltaic panels are arranged in a flat manner on the upper surface of the box-type support truss structure. On the outside, multiple annular photovoltaic panels are arranged in a circular shape and expand outward in sequence. The photovoltaic panels have certain anti-corrosion and wave resistance performance, which meets the requirements of long-term operation at sea. The equipment can be purchased directly as a finished product, and the number of arrangements can be flexibly adjusted according to the size of the project.

[0004] The wind turbine blades and wind turbine tower of the offshore power generation device disclosed in the above patent document are both located at the top of the device. When extreme weather occurs on the sea surface and the offshore power generation device encounters extremely severe sea conditions, the wind turbine blades and wind turbine tower of the above patent document have no protection measures, are prone to damage, and have a short service life. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide an offshore power generation device utilizing photovoltaic energy, wind energy and tidal energy, which can not only fully utilize multiple energy sources at sea, but also has a low risk of damage and a long service life.

[0006] An offshore power generation device utilizing photovoltaic, wind, and tidal energy according to an embodiment of the present invention includes: a wind turbine power generation device, which includes a telescopic tower barrel assembly, a wind blade assembly, and a power generation component. The telescopic tower barrel assembly is axially telescopic. The power generation component is disposed within the telescopic tower barrel assembly. The wind blade assembly is circumferentially rotatably disposed at the axial top of the telescopic tower barrel assembly and is connected to the power generation component, so as to generate electricity using offshore wind energy when the telescopic tower barrel assembly drives the wind blade assembly to extend out of the sea surface, and to generate electricity using underwater tidal energy when the telescopic tower barrel assembly drives the wind blade assembly to retract under the sea surface; a photovoltaic power generation device, and a telescopic connecting rope is connected between the photovoltaic power generation device and the telescopic tower barrel assembly.

[0007] Thus, the telescopic tower barrel assembly selectively extends and retracts according to different sea conditions to drive the wind blade assembly to extend out of the sea surface or retract under the sea surface, so that the wind turbine power generation device can generate electricity using offshore wind energy or underwater tidal energy. And a telescopic connecting rope is connected between the photovoltaic power generation device and the telescopic tower barrel assembly, so that photovoltaic power generation can also be utilized. With such a setting, not only can the offshore power generation device generate electricity efficiently using multiple clean energies, but also the position of the wind turbine power generation device can be adjusted according to different sea conditions, the types of clean energies utilized by the wind turbine power generation device can be adjusted, and the safety of the offshore power generation device can be ensured, reducing the risk of its damage, and the service life of the offshore power generation device can be extended. In addition, the telescopic movement of the connecting rope can also selectively pull the photovoltaic power generation device under the sea or put it back to the sea surface, which can more comprehensively protect the offshore power generation device according to the sea conditions.

[0008] In some examples of the present invention, the telescopic tower barrel assembly includes a base, a telescopic tower barrel member, and a fixed tower barrel member. The telescopic tower barrel member is disposed on the base and is axially telescopic. The fixed tower barrel member is disposed at the axial top of the telescopic tower barrel member. The power generation component is disposed within the fixed tower barrel member, and the wind blade assembly is disposed at the axial top of the fixed tower barrel member.

[0009] In some examples of the present invention, the telescopic tower barrel member includes a scissor-type telescopic frame and a plurality of barrel bodies. The plurality of barrel bodies are concentrically arranged and are axially telescopically connected. The scissor-type telescopic frame is in transmission connection with the innermost barrel body among the plurality of barrel bodies.

[0010] In some examples of the present invention, the wind blade assembly includes a rotating shaft, a blade member, and a connecting rod. The rotating shaft is circumferentially rotatably disposed at the axial top of the fixed tower barrel member, and the blade member is connected to the rotating shaft through the connecting rod.

[0011] In some examples of the present invention, the base is provided with a connecting rope control assembly. The connecting rope control assembly includes a box body, an inner shaft, an outer shaft, and a wound spring member. The inner shaft and the outer shaft are both rotatably disposed circumferentially within the box body. The inner shaft is disposed inside the outer shaft, and the wound spring member is disposed between the inner shaft and the outer shaft. The inner ring of the wound spring member is connected to the inner shaft, and the outer ring of the wound spring member is connected to the connecting rope. The connecting rope is wound around the outer shaft and one end of the connecting rope is connected to the outer shaft. The other end of the connecting rope passes through the box body and is connected to the photovoltaic power generation device.

[0012] In some examples of the present invention, the connecting rope control assembly further includes a bayonet member and a control member. The bayonet member is connected to the inner shaft and the outer shaft, and the control member selectively locks the bayonet member.

[0013] In some examples of the present invention, a tension sensor is provided on the connecting rope, and the tension sensor is electrically connected to the control member.

[0014] In some examples of the present invention, the base includes a main fixing column and a plurality of auxiliary fixing columns. The axial bottom of the telescopic tower barrel member is disposed on the main fixing column. The height of the auxiliary fixing columns in the axial direction is less than that of the main fixing column. The plurality of auxiliary fixing columns are circumferentially spaced apart outside the main fixing column and correspond to the axial bottom of the main fixing column. A first support arm is connected between two adjacent auxiliary fixing columns, and a second support arm is connected between the auxiliary fixing column and the main fixing column.

[0015] In some examples of the present invention, there are a plurality of wind power generation devices and at least one photovoltaic power generation device. Each photovoltaic power generation device is connected between two adjacent wind power generation devices at least through the connecting rope.

[0016] In some examples of the present invention, the photovoltaic power generation device includes a photovoltaic member and a floating member. The photovoltaic member is disposed on the floating member, and the floating member is connected to the connecting rope.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein: Figure 1 is a schematic diagram of an offshore power generation device utilizing photovoltaic, wind, and tidal energy according to an embodiment of the present invention; Figure 2It is a schematic diagram of an offshore power generation device that utilizes photovoltaic, wind, and tidal energy according to an embodiment of the present invention; Figure 3 It is a schematic diagram of a scissor-type telescopic frame according to an embodiment of the present invention; Figure 4 It is a schematic diagram of a connecting rope control assembly according to an embodiment of the present invention; Figure 5 It is a schematic diagram of a coiled spring member according to an embodiment of the present invention.

[0019] Reference numerals: 100, offshore power generation device; 10, wind turbine power generation device; 11, telescopic tower barrel assembly; 12, telescopic tower barrel member; 121, scissor-type telescopic frame; 1211, scissor-type frame; 1212, rotating shaft; 1213, controller; 122, barrel; 13, fixed tower barrel member; 14, base; 141, main fixed column; 142, auxiliary fixed column; 143, first support arm; 144, second support arm; 15, wind blade member; 151, rotating shaft; 152, blade member; 153, connecting rod; 17, connecting rope control assembly; 171, box body; 172, inner shaft; 173, outer shaft; 174, coiled spring member; 175, bayonet member; 176, control member; 18, connecting rope; 20, photovoltaic power generation device; 21, floating body member; 22, photovoltaic member. Detailed implementation manners

[0020] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0021] Reference will be made below Figures 1 - 5 to describe the offshore power generation device 100 that utilizes photovoltaic, wind, and tidal energy according to an embodiment of the present invention.

[0022] In combination with Figures 1 - 5 as shown, the offshore power generation device 100 that utilizes photovoltaic, wind, and tidal energy according to the present invention may mainly include: a wind turbine power generation device 10 and a photovoltaic power generation device 20. Among them, the wind turbine power generation device 10 includes a telescopic tower barrel assembly 11, a wind blade member 15, and a power generation member. The telescopic tower barrel assembly 11 is axially telescopic. The power generation member is disposed within the telescopic tower barrel assembly 11. The wind blade member 15 is rotatably disposed circumferentially at the axial top of the telescopic tower barrel assembly 11 and is connected to the power generation member. When the telescopic tower barrel assembly 11 drives the wind blade member 15 to extend out of the sea surface, wind energy at sea is utilized for power generation. When the telescopic tower barrel assembly 11 drives the wind blade member 15 to retract under the sea, tidal energy under the sea is utilized for power generation. A telescopic connecting rope 18 is connected between the photovoltaic power generation device 20 and the telescopic tower barrel assembly 11.

[0023] Specifically, by rotatably arranging the wind blade member 15 at the axial top of the telescopic tower barrel assembly 11 and connecting the wind blade member 15 to the power generation member, when the weather at sea is normal and the sea conditions where the offshore power generation device 100 is located are good, when the telescopic tower barrel assembly 11 drives the wind blade member 15 to extend out of the sea surface, the wind energy on the sea surface will drive the wind blade member 15 to rotate. As a result, the power generation member converts kinetic energy into electrical energy through the internal electromagnetic induction phenomenon, thereby realizing wind energy power generation. Correspondingly, when the weather at sea is severe, the sea conditions where the offshore power generation device 100 is located are poor, the wind on the sea surface may be too strong, and lightning strikes may occur, the risk of damage to the fan power generation device 10 will increase. Therefore, by driving the wind blade member 15 to retract under the sea by the telescopic tower barrel assembly 11, on the one hand, it can not only protect the fan power generation device 10 from damage, reduce the maintenance frequency of the fan power generation device 10, improve the service life of the fan power generation device 10, and reduce the maintenance cost of the fan power generation device 10. On the other hand, the tidal current under the sea will also drive the wind blade member 15 to rotate circumferentially, so that the power generation member converts kinetic energy into electrical energy through the electromagnetic induction phenomenon, thereby realizing tidal current power generation.

[0024] With such an arrangement, not only can the fan power generation device 10 selectively utilize wind energy and tidal current energy according to the sea conditions, but also the structural safety of the fan power generation device 10 can be ensured, enabling the fan power generation device 10 to adjust its position according to different sea conditions, thereby reducing the risk of damage.

[0025] In some specific embodiments of the present invention, the circumferential rotation of the wind blade member 15 drives the rotation of the rotor of the power generation member through transmission mechanisms such as a shaft body and a gearbox. The rotation of the rotor causes a change in its internal magnetic field. Due to the electromagnetic induction phenomenon, this causes a change in the magnetic flux in the stator coil, thereby generating an induced electromotive force in the coil and further generating an electric current.

[0026] Furthermore, a telescopic connecting rope 18 is connected between the photovoltaic power generation device 20 and the telescopic tower barrel assembly 11. Specifically, when the weather at sea is normal and the sea conditions where the offshore power generation device 100 is located are good, the connecting rope 18 can be extended. At this time, the photovoltaic power generation device 20 is exposed above the sea surface and can utilize the sunlight in the air above the sea for power generation. When the weather at sea is severe, the sea conditions where the offshore power generation device 100 is located are poor, the wind on the sea surface may be too strong, and lightning strikes may occur, the connecting rope 18 can be contracted, so that the photovoltaic power generation device 20 can be pulled under the sea for protection. This can further improve the safety of the offshore power generation device 100 on the premise that the offshore power generation device 100 has the function of photovoltaic power generation.

[0027] It should be noted that in the case of severe sea conditions, the lighting conditions on the sea surface are generally relatively poor, and it is also difficult for the photovoltaic power generation device 20 to obtain light energy. Therefore, pulling the photovoltaic power generation device 20 underwater for protection will not have much impact on the acquisition of light energy.

[0028] In addition, when the weather on the sea surface is relatively poor but not enough to damage the photovoltaic power generation device 20, the connecting rope 18 can be tightened relatively to a preset amount, just ensuring that the photovoltaic power generation device 20 will not shake randomly on the sea surface. In this way, on the premise of ensuring the structural safety of the photovoltaic power generation device 20, the photovoltaic power generation device 20 can still stably generate photovoltaic power, which can improve the energy utilization efficiency.

[0029] Thus, the telescopic tower barrel assembly 11 selectively extends or retracts the wind blade member 15 out of the sea surface or into the sea according to different sea conditions, so that the wind turbine power generation device 10 can generate electricity using the wind energy on the sea or the tidal current under the sea. And a telescopic connecting rope 18 is connected between the photovoltaic power generation device 20 and the telescopic tower barrel assembly 11, so that photovoltaic power generation can also be utilized. With such a setting, not only can the offshore power generation equipment 100 generate electricity efficiently using a variety of clean energies, but also the position of the wind turbine power generation device 10 can be adjusted according to different sea conditions, the types of clean energies utilized by the wind turbine power generation device 10 can be adjusted, and the safety of the offshore power generation equipment 100 can be ensured, reducing the risk of its damage, which can extend the service life of the offshore power generation equipment 100. In addition, the telescopic movement of the connecting rope 18 can also selectively pull the photovoltaic power generation device 20 into the sea or put it back on the sea surface, which can more comprehensively protect the offshore power generation equipment 100 according to the sea conditions.

[0030] Combined Figure 1 and Figure 2 As shown, the telescopic tower barrel assembly 11 includes a base 14, a telescopic tower barrel member 12 and a fixed tower barrel member 13. The telescopic tower barrel member 12 is arranged on the base 14 and is axially telescopic. The fixed tower barrel member 13 is arranged at the axial top of the telescopic tower barrel member 12. The power generation member is arranged inside the fixed tower barrel member 13, and the wind blade member 15 is arranged at the axial top of the fixed tower barrel member 13. Specifically, the base 14 is arranged on the seabed or connected and fixed to the seabed. The telescopic tower barrel member 12 is arranged on the base 14 and is axially telescopic. The fixed tower barrel member 13 is arranged at the axial top of the telescopic tower barrel member 12, and the power generation member is arranged inside the fixed tower barrel member 13, and the wind blade member 15 is arranged at the axial top of the fixed tower barrel member 13. In this way, not only can the installation and setting of the power generation member and the wind blade member 15 on the telescopic tower barrel assembly 11 be stable and firm, but also since the power generation member and the wind blade member 15 are not directly installed on the telescopic tower barrel member 12, the telescopic movement of the telescopic tower barrel member 12 will not affect the normal operation of the power generation member or the wind blade member 15, which can optimize the structural design of the offshore power generation equipment 100.

[0031] Furthermore, by providing a fixed tower member 13 at the axial top of the telescopic tower member 12, the height of the telescopic tower assembly 11 can be increased while ensuring the structural stability of the telescopic tower member 12, so that the wind blade member 15 at the axial top of the fixed tower member 13 can be at a higher height, thereby enabling the acquisition of the maximum amount of wind energy.

[0032] Combined with Figures 1 - 4 As shown, the telescopic tower member 12 includes a scissor lift 121 and a plurality of cylinders 122. The plurality of cylinders 122 are concentrically arranged and are axially telescopically connected. The scissor lift 121 is drivingly connected to the innermost cylinder 122 among the plurality of cylinders 122. Specifically, by concentrically arranging the plurality of cylinders 122, the cylinder 122 with a larger diameter is sequentially sleeved outside the cylinder 122 with a smaller diameter, and the plurality of cylinders 122 are axially telescopically connected. The scissor lift 121 is drivingly connected to the innermost cylinder 122 among the plurality of cylinders 122. When the scissor lift 121 axially expands and contracts, it can drive the innermost cylinder 122 among the plurality of cylinders 122 to axially expand and contract, and then sequentially drive the other cylinders 122 to axially expand and contract, thereby realizing the axial expansion and contraction of the telescopic tower member 12.

[0033] In some embodiments of the present invention, combined with Figure 3 As shown, the scissor lift 121 includes two scissor frames 1211 and a rotating shaft 1212 connected between the bottoms of the two scissor frames 1211. A controller 1213 is provided on the rotating shaft 1212. The controller 1213 can selectively control the rotation of the rotating shaft 1212, so that the rods at the bottoms of the two scissor frames 1211 rotate simultaneously, thereby realizing the simultaneous lifting and lowering of the two scissor frames 1211. This can not only make the forces on the two scissor lifts 121 more uniform, but also increase the maximum force-bearing capacity of the telescopic tower member 12, and make the stability of the telescopic tower member 12 better.

[0034] It should be noted that in some embodiments of the present invention, the method of expanding and contracting the telescopic tower member 12 is not limited to the combination of the above-mentioned plurality of cylinders 122 and the scissor lift 121, as long as the axial expansion and contraction of the wind blade member 15 and the power generation member can be realized.

[0035] Combined with Figure 1 and Figure 2As shown, the wind blade member 15 includes a rotating shaft 151, a blade member 152, and a connecting rod 153. The rotating shaft 151 is circumferentially rotatably provided at the axial top of the fixed tower barrel member 13, and the blade member 152 is connected to the rotating shaft 151 through the connecting rod 153. Specifically, by circumferentially rotatably arranging the rotating shaft 151 at the axial top of the fixed tower barrel member 13 and connecting the blade member 152 to the rotating shaft 151 through the connecting rod 153, when wind or tide acts on the blade member 152, the blade member 152 will rotate together with the connecting rod 153 and the rotating shaft 151, so that the rotation of the wind blade member 15 can drive the power generation member to generate electricity.

[0036] In some embodiments of the present invention, there are multiple blade members 152. The multiple blade members 152 are circumferentially spaced apart outside the rotating shaft 151, which can make full use of the outer space of the rotating shaft 151, thereby improving the utilization efficiency of wind energy or tidal energy.

[0037] In some embodiments of the present invention, the blade member 152 adopts an airfoil design, and the number and shape of the blades can be optimized and adjusted according to specific conditions such as the wind speed at sea and the tidal current intensity underwater. For example, the blade member 152 of the present invention can be four, and the blades can be rectangular.

[0038] Combined with Figure 4 and Figure 5 As shown, the base 14 is provided with a connecting rope control assembly 17. The connecting rope control assembly 17 includes a box body 171, an inner shaft 172, an outer shaft 173, and a wound spring member 174. The inner shaft 172 and the outer shaft 173 are both circumferentially rotatably provided in the box body 171. The inner shaft 172 is arranged inside the outer shaft 173, and the wound spring member 174 is arranged between the inner shaft 172 and the outer shaft 173. The inner ring of the wound spring member 174 is connected to the inner shaft 172, the outer ring of the wound spring member 174 is connected to the connecting rope 18, the connecting rope 18 is wound around the outer shaft 173 and one end is connected to the outer shaft 173, and the other end of the connecting rope 18 passes through the box body 171 and is connected to the photovoltaic power generation device 20.

[0039] Specifically, by disposing the inner shaft 172 inside the outer shaft 173 and spacing the inner shaft 172 and the outer shaft 173 radially, the coiled spring member 174 can be disposed between the inner shaft 172 and the outer shaft 173. Connect the inner ring of the coiled spring member 174 to the inner shaft 172 and connect the outer ring of the coiled spring member 174 to the connecting rope 18. When both the inner shaft 172 and the outer shaft 173 rotate in one direction, either clockwise or counterclockwise, the coiled spring member 174 can be tightened and the connecting rope 18 can be tightened. Since the connecting rope 18 is wound around the outer shaft 173 and one end is connected to the outer shaft 173 and the other end passes through the box body 171 and is connected to the photovoltaic power generation device 20, when the connecting rope 18 is tightened, the tightened connecting rope 18 will wind more circles around the outer shaft 173, so that the photovoltaic power generation device 20 connected to the other end of the connecting rope 18 is pulled closer to the connecting rope control assembly 17 of the base 14. In the case of severe sea conditions, the photovoltaic power generation device 20 can be pulled underwater for protection.

[0040] Correspondingly, when both the inner shaft 172 and the outer shaft 173 rotate in the other direction, either clockwise or counterclockwise, the inner shaft 172 will remove the tightening force on the coiled spring member 174. Due to the elastic force of the coiled spring member 174 itself, a longer connecting rope 18 on the outer shaft 173 can pass through the box body 171, so that the distance between the photovoltaic power generation device 20 and the connecting rope control assembly 17 of the base 14 can be lengthened, and thus the photovoltaic power generation device 20 can float to the sea surface to obtain light energy.

[0041] With such a setting, not only is the structure of the connecting rope control assembly 17 simple, the control principle is relatively simple and direct, and it is not easy to get stuck or damaged, which can make the tightening or release of the connecting rope 18 on the photovoltaic power generation device 20 more stable, but also it is convenient for maintenance, which can further reduce the cost of the offshore power generation equipment 100.

[0042] It should be noted that in some embodiments of the present invention, the method of making the connecting rope 18 expand and contract is not limited to the structural design of the above-mentioned connecting rope control assembly 17, as long as the expansion and contraction of the connecting rope 18 can be realized.

[0043] Combined with Figure 4As shown, the connecting rope control assembly 17 further includes a bayonet member 175 and a control member 176. The bayonet member 175 is connected to the inner shaft 172 and the outer shaft 173, and the control member 176 selectively locks the bayonet member 175. Specifically, by connecting the bayonet member 175 to the inner shaft 172 and the outer shaft 173, when the sea conditions are severe and the connecting rope control assembly 17 pulls the photovoltaic power generation device 20 into the sea, the control member 176 controls the bayonet member 175 to lock, which can prevent the inner shaft 172 and the outer shaft 173 from rotating. When the photovoltaic power generation device 20 is put back on the sea surface, damage to the photovoltaic power generation device 20 can be avoided, which can further improve the reliability of the connecting rope control assembly 17.

[0044] In some embodiments of the present invention, a tension sensor is provided on the connecting rope 18, and the tension sensor is electrically connected to the control member 176. Specifically, by providing a tension sensor on the connecting rope 18, the tension sensor can monitor the tension on the connecting rope 18. The tension sensor is electrically connected to the control member 176. When the tension sensor monitors that the tension on the connecting rope 18 reaches the tension threshold, the control member 176 controls the inner shaft 172 and the outer shaft 173 to rotate to tighten the connecting rope 18, which can prevent the connecting rope 18 from breaking and the photovoltaic power generation device 20 from losing its connection with the wind turbine power generation device 10, which can further improve the reliability of the connecting rope control assembly 17.

[0045] It should be noted that the tension threshold means that when the tension on the connecting rope 18 is greater than this tension threshold, the connecting rope 18 is prone to break.

[0046] Combined Figure 1 and Figure 2 As shown, the base 14 includes a main fixing column 141 and a plurality of auxiliary fixing columns 142. The axial bottom of the telescopic tower barrel member 12 is arranged on the main fixing column 141. The axial height of the auxiliary fixing columns 142 is less than that of the main fixing column 141. The plurality of auxiliary fixing columns 142 are circumferentially spaced apart outside the main fixing column 141 and correspond to the axial bottom of the main fixing column 141. A first support arm 143 is connected between two adjacent auxiliary fixing columns 142, and a second support arm 144 is connected between the auxiliary fixing column 142 and the main fixing column 141.

[0047] Specifically, by setting the axial bottom of the telescopic tower barrel component 12 on the main fixed column 141, the main fixed column 141 can maintain the stability and reliability of the telescopic tower barrel component 12 and the fixed tower barrel component 13 and the wind blade component 15 above, and the axial height of the auxiliary fixed column 142 is smaller than the main fixed column 141. Multiple auxiliary fixed columns 142 are arranged at intervals on the outer circumferential side of the main fixed column 141 and correspond to the axial bottom of the main fixed column 141. A first support arm 143 is connected between two adjacent auxiliary fixed columns 142, and a second support arm 144 is connected between the auxiliary fixed column 142 and the main fixed column 141. The auxiliary fixed column 142 can make the main fixed column 141 more stable and reliable, and not easy to tilt or tilt, without increasing the volume of the main fixed column 141 and reducing the cost of the offshore power generation equipment 100 as much as possible.

[0048] Furthermore, the first support arm 143 between two adjacent auxiliary fixing columns 142 and the second support arm 144 between the auxiliary fixing column 142 and the main fixing column 141 can reduce the weight of the base 14 while ensuring the stability of the base 14, and can achieve lightweight offshore power generation equipment 100 to a certain extent.

[0049] Combination Figure 1 and Figure 2 As shown, there are multiple wind turbine generators 10, at least one photovoltaic generator 20, and each photovoltaic generator 20 is connected between at least two adjacent wind turbine generators 10 through a connecting rope 18. Specifically, by providing multiple wind turbine generators 10, and providing at least one photovoltaic generator 20, and each photovoltaic generator 20 is connected between at least two adjacent wind turbine generators 10 through a connecting rope 18, not only can the connection strength between the photovoltaic generator 20 and the wind turbine generator 10 be improved, but also the connection force between the photovoltaic generator 20 and the wind turbine generator 10 can be made more uniform, and the photovoltaic generator 20 can be prevented from tilting sideways.

[0050] Combination Figure 1 and Figure 2 As shown, the photovoltaic power generation device 20 includes a photovoltaic component 22 and a floating component 21, wherein the photovoltaic component 22 is disposed on the floating component 21, and the floating component 21 is connected to the connecting rope 18. Specifically, by arranging the photovoltaic component 22 on the floating component 21, the floating component 21 will float freely on the sea surface without being subjected to external force, and after the connecting rope 18 pulls the floating component 21 downward into the sea, the photovoltaic component 22 will sink into the sea together with the floating component 21.

[0051] In some embodiments of the present invention, the photovoltaic element 22 is arranged in plurality, and the plurality of photovoltaic elements 22 are arranged at intervals on the floating element 21 , which can not only improve the power generation efficiency of the photovoltaic power generation device 20 .

[0052] In some embodiments of the present invention, the sun above the sea surface is moving, and the photovoltaic element 22 can move according to the direction of the light, so that the photovoltaic element 22 can always face the sun above the sea surface, which can further improve the power generation efficiency of the photovoltaic element 22.

[0053] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0055] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An offshore power generation device utilizing photovoltaic, wind and tidal energy, characterized in that: include: A wind turbine power generation device, the wind turbine power generation device comprising a telescopic tower assembly, a wind blade and a power generation element, the telescopic tower assembly is telescopic in the axial direction, the power generation element is arranged in the telescopic tower assembly, the wind blade is rotatably arranged at the axial top of the telescopic tower assembly and is connected to the power generation element, so that when the telescopic tower assembly drives the wind blade to extend out of the sea surface, offshore wind energy is used to generate electricity, and when the telescopic tower assembly drives the wind blade to retract into the sea, underwater tidal energy is used to generate electricity; A photovoltaic power generation device, wherein a retractable connecting rope is connected between the photovoltaic power generation device and the telescopic tower assembly.

2. The offshore power generation equipment using photovoltaic, wind and tidal energy according to claim 1, characterized in that: The telescopic tower assembly includes a base, a telescopic tower member and a fixed tower member. The telescopic tower member is arranged on the base and is telescopic in the axial direction. The fixed tower member is arranged at the axial top of the telescopic tower member. The power generation member is arranged in the fixed tower member. The wind blade member is arranged at the axial top of the fixed tower member.

3. The offshore power generation equipment using photovoltaic, wind and tidal energy according to claim 2, characterized in that: The telescopic tower member includes a scissor-type telescopic frame and a plurality of cylinders, the plurality of cylinders are concentrically arranged and telescopically connected in the axial direction, and the scissor-type telescopic frame is drivingly connected to the innermost cylinder among the plurality of cylinders.

4. The offshore power generation equipment using photovoltaic, wind and tidal energy according to claim 2, characterized in that: The wind blade member comprises a rotating shaft, a blade member and a connecting rod. The rotating shaft is rotatably arranged at the axial top of the fixed tower member, and the blade member is connected to the rotating shaft through the connecting rod.

5. The offshore power generation equipment using photovoltaic, wind and tidal energy according to claim 2, characterized in that: The base is provided with a connecting rope control assembly, which includes a box body, an inner shaft, an outer shaft and a coil spring member, wherein both the inner shaft and the outer shaft are rotatably arranged in the box body; The inner shaft is arranged inside the outer shaft, the coil spring component is arranged between the inner shaft and the outer shaft, the inner ring of the coil spring component is connected to the inner shaft, the outer ring of the coil spring component is connected to the connecting rope, the connecting rope is arranged around the outer shaft and one end is connected to the outer shaft, and the other end of the connecting rope passes through the box body and is connected to the photovoltaic power generation device.

6. The offshore power generation equipment using photovoltaic, wind and tidal energy according to claim 5, characterized in that: The connecting rope control assembly further comprises a bayonet member and a control member, wherein the bayonet member is connected to the inner shaft and the outer shaft, and the control member selectively locks the bayonet member.

7. The offshore power generation equipment using photovoltaic, wind and tidal energy according to claim 6, characterized in that: A tension sensor is arranged on the connecting rope, and the tension sensor is electrically connected to the control component.

8. The offshore power generation equipment using photovoltaic, wind and tidal energy according to claim 2, characterized in that: The base includes a main fixing column and multiple auxiliary fixing columns, the axial bottom of the telescopic tower barrel is arranged on the main fixing column, the axial height of the auxiliary fixing column is smaller than that of the main fixing column, the multiple auxiliary fixing columns are arranged at intervals in the circumferential direction on the outer side of the main fixing column and correspond to the axial bottom of the main fixing column, a first support arm is connected between two adjacent auxiliary fixing columns, and a second support arm is connected between the auxiliary fixing column and the main fixing column.

9. The offshore power generation equipment using photovoltaic, wind and tidal energy according to claim 1, characterized in that: There are multiple wind turbine power generation devices and at least one photovoltaic power generation device, and each photovoltaic power generation device is connected between at least two adjacent wind turbine power generation devices through the connecting rope.

10. The offshore power generation equipment using photovoltaic, wind and tidal energy according to claim 1, characterized in that: The photovoltaic power generation device comprises a photovoltaic component and a floating component, wherein the photovoltaic component is arranged on the floating component, and the floating component is connected to the connecting rope.

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