Offshore wind power system energy storage device and operation method

Abstract

The present invention relates to the field of offshore wind power energy storage technology, and proposes an offshore wind power system energy storage device and operation method, including a power generation platform, a power generation mechanism, a buoyancy adjustment mechanism and a driving mechanism. The power generation mechanism is arranged in the center of the power generation platform, and the power generation mechanism is used to generate electricity through wind power, and convert the stored buoyancy into electrical energy for power generation; the buoyancy adjustment mechanism is arranged below the power generation platform, and the buoyancy adjustment mechanism is used to convert and store excess wind energy and buoyancy. The driving mechanism is connected to the power generation mechanism by transmission, and the driving mechanism is used to enable the power generation mechanism to drive the buoyancy adjustment mechanism to move, wherein a transmission channel is provided on the side of the power generation platform away from the power generation mechanism, and the driving mechanism and the buoyancy adjustment mechanism are both assembled and installed through the transmission channel. Through the above technical solution, excess energy can be directly converted into buoyancy while generating electricity normally, reducing the use of excess devices and energy loss.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power energy storage technology, and in particular to an offshore wind power system energy storage device and an operating method. Background Art

[0002] Offshore wind power, like onshore wind power, is volatile, intermittent and irregular, resulting in a lot of energy being wasted, so offshore wind power requires energy storage.

[0003] Traditional offshore energy storage mostly uses the same electrochemical energy storage technology as on land, such as lithium-ion batteries. Batteries can quickly respond and efficiently store and release energy. This requires each wind turbine to be equipped with a battery energy storage device. This energy storage method improves the adjustment speed and response accuracy of the wind farm. However, the production and maintenance costs of battery energy storage equipment are high, and the service life is limited. The buoyancy of seawater can be used to store energy at sea. This method saves battery costs and reduces the failure rate. The patent with application number CN202110756986.5 discloses a composite offshore wind power generation and storage device using buoyancy and gravity. By controlling the energy storage The buoyancy regulating mechanism rises in the water, and when releasing energy, the buoyancy regulating mechanism moves downward under the action of gravity, and drives the rotating propeller to rotate through contact with sea water to generate electricity. However, this method has high requirements on the depth of the water area. At the same time, the buoyancy regulating mechanism is provided with multiple devices such as power generation components and energy conversion mechanisms. There are wires connected between the buoyancy regulating mechanism and the wind turbine. When in use, the buoyancy regulating mechanism is likely to float in the water, pulling the wind turbine, and is prone to collision and failure. Therefore, in order to minimize the equipment in the water during energy storage and thereby reduce the failure rate during energy storage, it is necessary to propose an offshore wind power system energy storage device. Summary of the Invention

[0004] In response to the defects of the existing technology, the present invention provides an offshore wind power system energy storage device and operation method, which solves the problem in the existing technology that there are too many devices moving in the water to store energy through buoyancy and gravity, which is prone to failure.

[0005] The technical solution adopted in the present invention is as follows:

[0006] The present invention provides an offshore wind power system energy storage device, comprising:

[0007] Power generation platform;

[0008] A power generation mechanism, the power generation mechanism being arranged in the center of the power generation platform, the power generation mechanism being used to generate electricity through wind power and to convert stored buoyancy into electrical energy for generating electricity;

[0009] A buoyancy regulating mechanism, which is arranged below the power generation platform and is used to convert and store excess wind energy into buoyancy;

[0010] A driving mechanism, the driving mechanism being arranged on the power generation platform, the driving mechanism being in transmission connection with the power generation mechanism, the driving mechanism being in transmission connection with the buoyancy regulating mechanism, and the driving mechanism being used to perform transmission connection between the power generation mechanism and the buoyancy regulating mechanism;

[0011] Wherein, a transmission channel is provided on the side of the power generation platform away from the power generation mechanism, and the driving mechanism and the buoyancy regulating mechanism are both assembled and installed through the transmission channel.

[0012] Preferably, the power generation mechanism includes:

[0013] A column, wherein the column is fixedly arranged at the center of the power generation platform, and the center of the column is hollow;

[0014] A unit casing, the unit casing being fixedly arranged on the top of the column;

[0015] a blade, the blade being rotatably arranged outside the casing of the unit;

[0016] A clutch, the clutch being fixedly disposed inside the unit housing and being in transmission connection with the blade; the clutch being in transmission connection with one end of the drive mechanism;

[0017] A generator is fixedly arranged inside the unit housing and is transmission-connected to the clutch.

[0018] Preferably, the clutch is provided with a transmission shaft 1, a transmission shaft 2 and a transmission shaft 3; the transmission shaft 1 is connected to the blade, the transmission shaft 2 is connected to the generator; the transmission shaft 3 is in transmission connection with one end of the driving mechanism;

[0019] The transmission shaft one, the transmission shaft two and the transmission shaft three are all transmitted through the gear device that cooperates with each other inside the clutch; by adjusting the gear device inside the clutch, the mutual transmission between the transmission shaft one, the transmission shaft two and the transmission shaft three can be controlled; the clutch can adjust the transmission shaft one to drive the transmission shaft two to rotate, and perform a wind power generation operation; the clutch can adjust the transmission shaft one to drive the transmission shaft three to rotate, and perform an energy storage operation in which wind energy is converted into buoyancy; the clutch can adjust the transmission shaft three to drive the transmission shaft two to rotate, and perform an energy release operation.

[0020] Preferably, the driving mechanism includes:

[0021] A linkage assembly, the linkage assembly being in transmission connection with the clutch, the linkage assembly passing through the column and extending into the transmission channel, the end of the linkage assembly extending into the transmission channel being connected to a gear set, the linkage assembly being used to drive the gear set to move;

[0022] A transmission frame 1, wherein the transmission frame 1 is fixedly disposed in the transmission channel and a set of the transmission frame is disposed on the linkage assembly;

[0023] The gear set is sleeved on the transmission frame 1 and is used to drive the buoyancy adjustment mechanism to move under the action of the linkage assembly;

[0024] A second transmission frame, the second transmission frame being fixedly disposed in the transmission channel and sleeved on the outside of the gear set;

[0025] The rotation of the blade is transmitted to the gear set through the linkage assembly, and the gear set then transmits the kinetic energy to the buoyancy adjustment mechanism, thereby performing an energy storage condition in which wind energy is converted into buoyancy; and when the buoyancy adjustment mechanism moves upward, it drives the gear set to rotate, and the gear set then drives the clutch to move through the linkage assembly, thereby enabling the generator to generate electricity, thereby performing an energy release condition.

[0026] Preferably, the linkage component includes:

[0027] A linkage frame, the linkage frame being fixedly arranged in the column;

[0028] A transmission wheel 1, the transmission wheel 1 being rotatably disposed in the linkage frame and connected to the transmission shaft 3;

[0029] Transmission wheel 2, the transmission wheel 2 is rotatably arranged in the linkage frame, the transmission wheel 1 is transmission-connected with the transmission wheel 2, and a driving rod is provided on the transmission wheel 2, and the driving rod passes through the linkage frame and the transmission frame 1;

[0030] A transmission member is sleeved between the transmission wheel 1 and the transmission wheel 2; when the transmission shaft 3 drives the transmission wheel 1 to rotate, the transmission member drives the transmission wheel 2 to rotate; when the transmission wheel 2 rotates, the driving rod is driven to rotate.

[0031] Preferably, the transmission frame 1 is rotatably provided with a plurality of transmission rods, and the transmission rods pass through the transmission frame 2; one of the transmission rods is connected to the driving rod; when the driving rod rotates, it drives one of the transmission rods to rotate.

[0032] Preferably, the gear set comprises:

[0033] A bevel gear, wherein a plurality of the bevel gears are provided, and each of the bevel gears is provided at one end of each of the transmission rods;

[0034] Gear rings, two of which are provided, and the two gear rings are provided on the upper and lower sides of the plurality of bevel gears, the gear rings are rotatably provided on the transmission frame 1, and the plurality of bevel gears are meshed with the two gear rings;

[0035] When the driving rod rotates, it drives the transmission rod connected to it to rotate. When the transmission rod rotates, it drives the bevel gear at its end to rotate, and then drives the two gear rings on the transmission frame to rotate; when the two gear rings rotate, they drive the other bevel gears to rotate at the same time, and then drive the other transmission rods to rotate, thereby achieving the same speed rotation of all the transmission rods.

[0036] Preferably, the buoyancy adjustment mechanism includes:

[0037] A deep water frame, wherein a plurality of deep water frames are provided, each of the deep water frames corresponds to the transmission rod one by one, the deep water frame is fixedly provided in the transmission channel, and one end of the transmission rod extends into the deep water frame;

[0038] A driving wheel, the driving wheel is rotatably arranged in the deep water frame, and a transmission chain is provided between the driving wheel and a tensioning sleeve at one end of the transmission rod;

[0039] A buoyancy assembly, the buoyancy assembly being arranged on the transmission chain and being used for rising and falling in seawater to store energy;

[0040] When the transmission rod rotates, it drives the transmission chain to move with the driving wheel as support; when the transmission chain moves, it drives the buoyancy assembly to move up and down;

[0041] The buoyancy assembly comprises:

[0042] a passing slot, the passing slot being opened on the side of the deep water frame;

[0043] A connecting rod, each of the transmission chains is fixedly provided with the connecting rod, and the connecting rod passes through the through slot;

[0044] A motion frame, the motion frame is arranged on the connecting rod and is fixedly connected to each of the connecting rods; the motion frame is sleeved on the outside of the multiple deep water frames;

[0045] Floats, wherein a plurality of floats are provided, and the plurality of floats are arranged on the motion frame;

[0046] When the transmission rods rotate simultaneously, the corresponding transmission chains are driven to move through the support of the corresponding driving wheels, and then the connecting rods are driven to rise and fall along the through grooves on the sides of the deep water frame; when all the connecting rods are raised and lowered, the motion frame is driven to rise and fall; since the deep water frame is deep into the water, the motion frame surrounds the deep water frame, and therefore, the motion frame can be raised and lowered within the range where the deep water frame is deep into the water.

[0047] The present invention also provides an operating method of an offshore wind power system energy storage device, comprising the following steps:

[0048] Step S1, by adjusting the clutch, the offshore wind power system energy storage device performs the wind power generation operation mode of step S2, the energy storage operation mode of converting wind energy into buoyancy of step S3, and the energy release operation mode of step S4 as needed;

[0049] Step S2, wind power generation condition:

[0050] In wind power generation operation, the clutch is adjusted to enable transmission shaft 1 and transmission shaft 2 to transmit power, disconnect transmission shaft 3 from transmission shaft 1, and disconnect transmission between transmission shaft 3 and transmission shaft 2;

[0051] The blades rotate under the action of wind. When the blades rotate, the transmission between the clutch transmission shaft 1 and the transmission shaft 2 drives the generator to generate electricity.

[0052] Step S3, wind energy is converted into buoyancy energy storage condition:

[0053] In the energy storage working condition where wind energy is converted into buoyancy, the clutch is adjusted to enable transmission shaft 1 and transmission shaft 3 to transmit, and disconnect transmission between transmission shaft 3 and transmission shaft 2. Transmission shaft 1 and transmission shaft 2 can transmit or disconnect transmission;

[0054] The blades rotate under the action of wind. Through the transmission action between the transmission shaft 1 and the transmission shaft 3 of the clutch, when the blades rotate, the transmission shaft 1 rotates, and then the transmission shaft 3 rotates.

[0055] When the transmission shaft rotates, the motion frame in the buoyancy adjustment mechanism is driven to steadily descend through the driving mechanism, thereby causing the float to move into the water, converting wind energy into buoyancy, and performing an energy storage condition of converting wind energy into buoyancy;

[0056] Step S4, energy release condition:

[0057] In the energy release working condition, the clutch is adjusted to enable transmission between transmission shaft 3 and transmission shaft 2, and disconnect transmission between transmission shaft 1 and transmission shaft 3; transmission between transmission shaft 1 and transmission shaft 2 can be enabled or disconnected;

[0058] The float moves upward under the action of buoyancy, thereby driving the moving frame to move upward; when the moving frame moves upward, the driving mechanism drives the transmission shaft three to rotate, and the transmission shaft three drives the transmission shaft two to rotate, thereby driving the generator 7 to generate electricity and complete the energy release.

[0059] Preferably, when the wind energy is converted into buoyancy energy storage working condition, when the transmission shaft rotates, the motion frame in the buoyancy adjustment mechanism is driven to steadily descend through the driving mechanism, specifically:

[0060] When the transmission shaft 3 rotates, it drives the transmission wheel 1 to rotate, and the transmission wheel 1 drives the transmission wheel 2 to rotate through the transmission member; when the transmission wheel 2 rotates, it drives the connected driving rod to rotate;

[0061] When the driving rod rotates, it drives one of the transmission rods connected to it to rotate;

[0062] When the transmission rod rotates, it drives the bevel gear at its end to rotate, and then drives the two gear rings on the transmission frame to rotate; when the two gear rings rotate, they drive the other bevel gears to rotate at the same time, and then drive the other transmission rods to rotate, thereby achieving uniform rotation of all the transmission rods;

[0063] When all the transmission rods rotate at a constant speed, they drive the transmission chains to move with the driving wheels as support; when the transmission chains move, they drive the connecting rods to descend in the grooves, and all the connecting rods drive the motion frame to descend stably;

[0064] During the energy release operation, when the motion frame moves upward, the drive mechanism drives the transmission shaft 3 to rotate, specifically:

[0065] When the motion frame moves upward, it drives the connecting rod to move upward in the groove; when each connecting rod moves upward, it drags the transmission chain to move; the movement of the transmission chain drives the transmission rod to rotate, and the transmission rod then drives the driving rod to rotate through the engagement of the bevel gear and the gear ring; the driving rod drives the transmission wheel 2 to rotate; the transmission wheel 2 drives the transmission wheel 1 to rotate through the transmission member, and then drives the transmission shaft 3 to rotate.

[0066] The offshore wind power system energy storage device and operation method provided by the present invention have the following advantages:

[0067] 1. The present invention provides a clutch, which allows the regulating blades to directly drive the generator to generate electricity, or the blades drive the moving frame to dive into the water, directly converting wind power into buoyancy of the float, thereby reducing the steps of converting wind power into electrical energy, and then converting electrical energy into buoyancy and gravitational potential energy for energy storage, thereby reducing the use of some underwater equipment, thereby reducing the failure rate and cost;

[0068] 2. In the present invention, by providing a power generation mechanism, excess energy can be directly converted into buoyancy while generating electricity normally, thereby reducing the use of redundant devices and energy loss. By providing a buoyancy adjustment mechanism, energy can be stored simply by rising and falling in the water. By providing a driving mechanism, the kinetic energy of the rotation of the blades can be evenly transferred to the motion frame, so that the motion frame maintains balance during rising and falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0070] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0071] Figure 2 It is a structural schematic diagram of another perspective of the present invention as a whole;

[0072] Figure 3 Schematic diagram of the internal partial cross-section structure of the column and the unit casing of the present invention

[0073] Figure 4 This is a schematic diagram of a partial cross-section of the structure of the column and the unit casing from another perspective of the present invention;

[0074] Figure 5 It is a schematic diagram of the internal cross-sectional partial structure of the transmission channel and the deep water frame in the present invention;

[0075] Figure 6 Schematic diagram of the internal cross-sectional structure of the transmission channel in the present invention;

[0076] Figure 7 This is a schematic diagram of the internal cross-sectional structure of the transmission channel in the present invention from another perspective;

[0077] Figure 8 It is a schematic diagram of the internal cross-sectional structure of the transmission channel and the column in the present invention.

[0078] In the figure: 1. Power generation platform; 2. Transmission channel; 3. Column; 4. Unit casing; 5. Blade; 6. Clutch; 7. Generator; 8. Drive shaft 1; 9. Drive shaft 2; 10. Drive shaft 3; 11. Transmission frame 1; 12. Transmission frame 2; 13. Linkage frame; 14. Transmission wheel 1; 15. Transmission wheel 2; 16. Drive rod; 17. Transmission rod; 18. Bevel gear; 19. Gear ring; 20. Deep water frame; 21. Drive wheel; 22. Through slot; 23. Connecting rod; 24. Moving frame; 25. Float. DETAILED DESCRIPTION

[0079] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0080] like Figures 1 to 8 As shown, this embodiment proposes an offshore wind power system energy storage device, including a power generation platform 1, a power generation mechanism, a buoyancy adjustment mechanism and a driving mechanism; the power generation mechanism is arranged in the center of the power generation platform 1, and the power generation mechanism is used to generate electricity through wind power, and convert the stored buoyancy into electrical energy for power generation; the buoyancy adjustment mechanism is arranged below the power generation platform 1, and the buoyancy adjustment mechanism is used to convert and store excess wind energy and buoyancy; the driving mechanism is arranged on the power generation platform 1, and the driving mechanism is transmission-connected with the power generation mechanism, and the driving mechanism is transmission-connected with the buoyancy adjustment mechanism, and the driving mechanism is used to transmission-connect the power generation mechanism with the buoyancy adjustment mechanism; wherein, a transmission channel 2 is provided on the side of the power generation platform 1 away from the power generation mechanism, and the driving mechanism and the buoyancy adjustment mechanism are both assembled and installed through the transmission channel 2.

[0081] like Figures 1 to 4 As shown, the power generation mechanism includes a column 3, a unit casing 4, blades 5, a clutch 6 and a generator 7; the column 3 is fixedly arranged in the center of the power generation platform 1, and the center of the column 3 is arranged to be hollow; the unit casing 4 is fixedly arranged on the top of the column 3; the blades 5 are rotatably arranged on the outside of the unit casing 4; the clutch 6 is fixedly arranged inside the unit casing 4, and the clutch 6 is transmission-connected to the blades 5; the generator 7 is fixedly arranged inside the unit casing 4, and the generator 7 is transmission-connected to the clutch 6, so that the blades 5 directly drive the generator 7 to generate electricity through the clutch 6, or the blades 5 drive the moving frame 24 to dive into the water, directly converting wind power into the buoyancy of the float 25, reducing the steps of converting wind power into electrical energy, and then converting electrical energy into buoyancy and gravitational potential energy for energy storage, reducing the use of some underwater equipment, and thus reducing the failure rate and cost.

[0082] like Figures 1 to 4As shown, the clutch 6 is provided with a transmission shaft 1 8, a transmission shaft 2 9 and a transmission shaft 3 10. The transmission shaft 1 8 is connected to the blade 5, and the transmission shaft 2 9 is connected to the generator 7. The transmission shaft 1 8, the transmission shaft 2 9 and the transmission shaft 3 10 are all transmitted through the gears and other devices that cooperate with each other inside the clutch 6. By adjusting the internal devices of the clutch 6, the mutual transmission between the transmission shaft 1 8, the transmission shaft 2 9 and the transmission shaft 3 10 can be controlled; specifically, the clutch 6 can adjust the transmission shaft 1 8 to drive the transmission shaft 2 9 to rotate to perform a wind power generation operation; the clutch 6 can adjust the transmission shaft 1 8 to drive the transmission shaft 3 10 to rotate to perform an energy storage operation in which wind energy is converted into buoyancy; the clutch 6 can adjust the transmission shaft 3 10 to drive the transmission shaft 2 9 to rotate through the gears and other mechanisms inside the clutch 6 to perform an energy release operation.

[0083] like Figures 3 to 7 As shown, the driving mechanism includes a linkage component, a transmission frame 11, a gear set and a transmission frame 2 12; the linkage component is connected to the clutch 6, the linkage component passes through the column 3 and extends into the transmission channel 2, and the end of the linkage component extending into the transmission channel 2 is connected with a gear set, and the linkage component is used to drive the gear set to move; the transmission frame 11 is fixedly set in the transmission channel 2, and the transmission frame 11 is sleeved on the linkage component; the gear set is sleeved on the transmission frame 11, and the gear set is used to drive the buoyancy adjustment mechanism to move under the action of the linkage component; the transmission frame 2 12 is fixedly set in the transmission channel 2, and the transmission frame 2 12 is sleeved on the outside of the gear set.

[0084] The linkage assembly transmits the rotation of the blades 5 to the gear set, which then transfers the kinetic energy to the buoyancy adjustment mechanism, performing an energy storage operation that converts wind energy into buoyancy. The drive mechanism, acting as a transmission device, directly transmits the energy from the rotation of the blades 5 to the motion frame 24 of the buoyancy adjustment mechanism. The rotation of the blades 5 pulls the motion frame 24 to store energy, performing an energy storage operation that converts wind energy into buoyancy. Furthermore, when the motion frame 24 in the buoyancy adjustment mechanism rises under the action of buoyancy, it drives the gear set to rotate. The gear set then drives the clutch 6 through the linkage assembly, which then causes the generator 7 to generate electricity, performing an energy release operation. This achieves both energy storage and release.

[0085] like Figure 4 and Figure 8As shown, the linkage assembly includes a linkage frame 13, a transmission wheel 14, and a transmission wheel 2 15. The linkage frame 13 is fixedly mounted in the column 3, and the transmission wheel 14 is rotatably mounted in the linkage frame 13. The transmission wheel 14 is connected to the transmission shaft 3 10, and the transmission wheel 2 15 is rotatably mounted in the linkage frame 13. The transmission wheel 14 and the transmission wheel 2 15 are in transmission connection with each other. A driving rod 16 is mounted on the transmission wheel 2 15, and the driving rod 16 passes through the linkage frame 13 and the transmission frame 1 11. The transmission wheel 14 and the transmission wheel 2 15 are provided with a belt or chain or other transmission device. A transmission member is mounted between the transmission wheel 14 and the transmission wheel 2 15. When the transmission shaft 3 10 drives the transmission wheel 14 to rotate, the transmission member drives the transmission wheel 2 15 to rotate. When the transmission wheel 2 15 rotates, it drives the driving rod 16 to rotate.

[0086] like Figures 6 to 8 As shown, the transmission frame 11 is rotatably provided with a plurality of transmission rods 17, which pass through the transmission frame 2 12, and one of the transmission rods 17 is connected to the driving rod 16. When the driving rod 16 rotates, it drives one of the transmission rods 17 to rotate.

[0087] The gear set includes a bevel gear 18 and a gear ring 19. Multiple bevel gears 18 are provided, each mounted on a transmission rod 17. Two gear rings 19 are provided, one above the other of the multiple bevel gears 18. The gear rings 19 are rotatably mounted on the transmission frame 11, and the multiple bevel gears 18 mesh with the two gear rings 19. In this embodiment, there are four transmission rods 17 and four deep-water frame 20. When the drive rod 16 rotates the transmission rod 17 connected thereto, it rotates one of the bevel gears 18 at its end, which in turn rotates the two gear rings 19 on the transmission frame 11. The rotation of the two gear rings 19 simultaneously rotates the other three bevel gears 18, causing the four bevel gears 18 to rotate at the same speed as the four transmission rods 17. The transmission rod 17 drives the transmission chain to move, pulling the motion frame 24 into the water.

[0088] like Figures 1 to 6 As shown, the buoyancy adjustment mechanism includes a deep-water frame 20, a driving wheel 21 and a buoyancy assembly. There are multiple deep-water frames 20, and the deep-water frames 20 correspond one to one with the transmission rod 17. The deep-water frame 20 is fixedly arranged in the transmission channel 2, and one end of the transmission rod 17 extends into the deep-water frame 20. The driving wheel 21 is rotatably arranged in the deep-water frame 20. A transmission chain is provided between the driving wheel 21 and the tensioning sleeve on the transmission rod 17. The buoyancy assembly is arranged on the transmission chain. The buoyancy assembly is used to rise and fall in seawater to store energy; specifically, when the transmission rod 17 rotates, it drives the transmission chain to move with the driving wheel 21 as the support; when the transmission chain moves, it drives the buoyancy assembly to rise and fall.

[0089] The buoyancy assembly includes a through slot 22, a connecting rod 23, a motion frame 24, and a float 25. The through slot 22 is provided on the side of the deep water frame 20. A connecting rod 23 is fixedly mounted on each transmission chain, passing through the through slot 22. The motion frame 24 is mounted on the connecting rod 23 and fixedly connected to each connecting rod 23. Multiple floats 25 are provided, and multiple floats 25 are arranged on the motion frame 24. The motion frame 24 is mounted outside the multiple deep water frames 20 and connected to four connecting rods 23. In this embodiment, there are eight floats 25. Therefore, the connecting rod 23 passes through the through slot 22 and connects to the motion frame 24. The deep water frame 20 is immersed in the water. The motion frame 24 surrounds the deep water frame 20, and the deep water frame 20 can be raised and lowered within the range of its immersion in the water.

[0090] When each transmission rod 17 rotates simultaneously, the corresponding transmission chain is driven to move through the support of the corresponding driving wheel 21, and then the connecting rod 23 is driven to rise and fall along the through groove 22 on the side of the deep water frame 20; when all the connecting rods 23 are raised and lowered, the moving frame 24 is driven to rise and fall; because the deep water frame 20 is deep in the water, the moving frame 24 surrounds the deep water frame 20, and therefore, the moving frame 24 can be raised and lowered within the range where the deep water frame 20 is deep in the water.

[0091] In summary, the working principle of the energy storage device of this offshore wind power system is:

[0092] The blades 5 rotate under the action of wind power, and the blades 5 drive the generator 7 to generate electricity through the clutch 6; when energy storage is needed, the clutch 6 causes the transmission shaft 1 8 to drive the transmission shaft 3 10 to rotate, and the transmission shaft 3 10 drives the transmission wheel 2 15 to rotate through the transmission wheel 1 14, and the transmission wheel 2 15 drives the driving rod 16 to rotate, and the driving rod 16 drives the transmission rod 17 connected thereto to rotate, and the transmission rod 17 drives the bevel gear 18 to rotate, and the bevel gear 18 drives the two gear rings 19 to rotate, and the two gear rings 19 drive the other three bevel gears 18 to rotate, so that the four transmission rods 17 rotate at a uniform speed. The transmission rod 17 rotates through the transmission chain to drive the driving wheel 21 to rotate, and the transmission chain drives the connecting rod 23 to rise and fall in the groove 22. The four connecting rods 23 drive the moving frame 24 to descend, and the float 25 moves into the water. When the stored energy needs to be released, the clutch 6 controls the transmission shaft three 10 to drive the transmission shaft two 9 to rotate, and the float 25 moves upward under the action of buoyancy, and the transmission chain drives the transmission rod 17 to rotate. The transmission rod 17 then drives the transmission wheel one 14 to rotate through the bevel gear 18, the gear ring 19, the driving rod 16 and the transmission wheel two 15, thereby driving the generator 7 to generate electricity.

[0093] Specifically, the present invention provides an operating method for an offshore wind power system energy storage device, comprising the following steps:

[0094] Step S1, by adjusting the clutch 6, the offshore wind power system energy storage device performs the wind power generation operation mode of step S2, the energy storage operation mode of converting wind energy into buoyancy of step S3, and the energy release operation mode of step S4 as needed;

[0095] Step S2, wind power generation condition:

[0096] In the wind power generation mode, the clutch 6 is adjusted to make the transmission shaft 1 8 and the transmission shaft 2 9 transmit, and the transmission shaft 3 10 and the transmission shaft 1 8 are disconnected, and the transmission between the transmission shaft 3 10 and the transmission shaft 2 9 is disconnected;

[0097] The blades 5 rotate under the action of wind. When the blades 5 rotate, the transmission between the transmission shaft 1 8 and the transmission shaft 2 9 of the clutch 6 drives the generator 7 to generate electricity.

[0098] Step S3, wind energy is converted into buoyancy energy storage condition:

[0099] During the energy storage condition in which wind energy is converted into buoyancy, the clutch 6 is adjusted to allow transmission shaft 1 8 and transmission shaft 3 10 to transmit, and the transmission between transmission shaft 3 10 and transmission shaft 2 9 is disconnected. Transmission between transmission shaft 1 8 and transmission shaft 2 9 can be transmitted or disconnected; that is, the energy storage condition in which wind energy is converted into buoyancy can be carried out independently or simultaneously with the wind power generation condition.

[0100] The blades 5 rotate under the action of wind. Through the transmission action between the transmission shaft 1 8 and the transmission shaft 3 10 of the clutch 6, the blades 5 rotate, driving the transmission shaft 1 8 to rotate, and then driving the transmission shaft 3 10 to rotate;

[0101] When the transmission shaft 3 10 rotates, the motion frame 24 in the buoyancy adjustment mechanism is driven to steadily descend through the driving mechanism, thereby causing the float 25 to move into the water, converting wind energy into buoyancy, and performing an energy storage mode of converting wind energy into buoyancy;

[0102] In this step, when the transmission shaft 3 10 rotates, the motion frame 24 in the buoyancy adjustment mechanism is driven to steadily descend through the driving mechanism, specifically:

[0103] When the transmission shaft 3 10 rotates, it drives the transmission wheel 14 to rotate, and the transmission wheel 14 drives the transmission wheel 2 15 to rotate through the transmission member; when the transmission wheel 2 15 rotates, it drives the connected drive rod 16 to rotate;

[0104] When the driving rod 16 rotates, it drives one of the transmission rods 17 connected to it to rotate;

[0105] When the transmission rod 17 rotates, it drives the bevel gear 18 at its end to rotate, and then drives the two gear rings 19 to rotate on the transmission frame 11; when the two gear rings 19 rotate, they drive the other bevel gears 18 to rotate at the same time, and then drive the other transmission rods 17 to rotate, thereby achieving uniform rotation of all transmission rods 17;

[0106] When all the transmission rods 17 rotate at a constant speed, they drive the transmission chains to move with the drive wheels 21 as support. When the transmission chains move, they drive the connecting rods 23 to descend in the grooves 22. All the connecting rods 23 drive the motion frame 24 to descend stably.

[0107] Step S4, energy release condition:

[0108] During the energy release condition, the clutch 6 is adjusted to enable transmission between the transmission shaft three 10 and the transmission shaft two 9, and to disconnect the transmission between the transmission shaft one 8 and the transmission shaft three 10; transmission can be enabled or disconnected between the transmission shaft one 8 and the transmission shaft two 9; that is, the energy release condition can be performed independently or simultaneously with the wind power generation condition.

[0109] The float 25 moves upward under the action of buoyancy, thereby driving the moving frame 24 to move upward; when the moving frame 24 moves upward, the driving mechanism drives the transmission shaft three 10 to rotate, and the transmission shaft three 10 drives the transmission shaft two 9 to rotate, thereby driving the generator 7 to generate electricity and complete the energy release.

[0110] In this step, when the moving frame 24 moves upward, the driving mechanism drives the transmission shaft 3 10 to rotate, specifically:

[0111] When the motion frame 24 moves upward, it drives the connecting rod 23 to move upward in the groove 22; when each connecting rod 23 moves upward, it drags the transmission chain to move; the movement of the transmission chain drives the transmission rod 17 to rotate, and the transmission rod 17 then drives the drive rod 16 to rotate through the engagement of the bevel gear 18 and the gear ring 19; the drive rod 16 drives the transmission wheel 2 15 to rotate; the transmission wheel 2 15 drives the transmission wheel 1 14 to rotate through the transmission member, and then drives the transmission shaft 3 10 to rotate.

[0112] The offshore wind power system energy storage device and operation method provided by the present invention have the following advantages:

[0113] 1. The present invention provides a clutch, which allows the regulating blades to directly drive the generator to generate electricity, or the blades drive the moving frame to dive into the water, directly converting wind power into buoyancy of the float, thereby reducing the steps of converting wind power into electrical energy, and then converting electrical energy into buoyancy and gravitational potential energy for energy storage, thereby reducing the use of some underwater equipment, thereby reducing the failure rate and cost;

[0114] 2. In the present invention, by providing a power generation mechanism, excess energy can be directly converted into buoyancy while generating electricity normally, thereby reducing the use of redundant devices and energy loss. By providing a buoyancy adjustment mechanism, energy can be stored simply by rising and falling in the water. By providing a driving mechanism, the kinetic energy of the rotation of the blades can be evenly transferred to the motion frame, so that the motion frame maintains balance during rising and falling.

[0115] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An offshore wind power system energy storage device, characterized in that: include: Power generation platform (1); A power generation mechanism, the power generation mechanism being arranged at the center of the power generation platform (1), the power generation mechanism being used to generate electricity through wind power and to convert stored buoyancy into electrical energy for generating electricity; A buoyancy regulating mechanism, the buoyancy regulating mechanism being arranged below the power generation platform (1), and being used for converting and storing excess wind energy into buoyancy; A driving mechanism, the driving mechanism being arranged on the power generation platform (1), the driving mechanism being in transmission connection with the power generation mechanism, the driving mechanism being in transmission connection with the buoyancy regulating mechanism, and the driving mechanism being used to perform transmission connection between the power generation mechanism and the buoyancy regulating mechanism; Wherein, a transmission channel (2) is provided on the power generation platform (1) on a side away from the power generation mechanism, and the driving mechanism and the buoyancy adjustment mechanism are both assembled and installed through the transmission channel (2); The power generation mechanism includes: A column (3), the column (3) is fixedly arranged at the center of the power generation platform (1), and the center of the column (3) is arranged to be hollow; A unit housing (4), the unit housing (4) being fixedly arranged on the top of the column (3); a blade (5), the blade (5) being rotatably arranged outside the unit housing (4); A clutch (6), the clutch (6) being fixedly arranged inside the unit housing (4), the clutch (6) being transmission-connected to the blade (5); the clutch (6) being transmission-connected to one end of the drive mechanism; A generator (7), the generator (7) being fixedly disposed inside the unit housing (4), and the generator (7) being transmission-connected to the clutch (6); The driving mechanism comprises: A linkage assembly, the linkage assembly being in transmission connection with the clutch (6), the linkage assembly passing through the column (3) and extending into the transmission channel (2), the end of the linkage assembly extending into the transmission channel (2) being connected to a gear set, the linkage assembly being used to drive the gear set to move; A transmission frame (11), wherein the transmission frame (11) is fixedly arranged in the transmission channel (2), and the transmission frame (11) is sleeved on the linkage assembly; The gear set is sleeved on the transmission frame 1 (11), and the gear set is used to drive the buoyancy adjustment mechanism to move under the action of the linkage assembly; A second transmission frame (12), wherein the second transmission frame (12) is fixedly arranged in the transmission channel (2), and the second transmission frame (12) is sleeved on the outside of the gear set; The rotation of the blade (5) is transmitted to the gear set through the linkage assembly, and the gear set then transmits the kinetic energy to the buoyancy regulating mechanism, thereby performing an energy storage operation mode in which wind energy is converted into buoyancy; and when the buoyancy regulating mechanism moves upward, it drives the gear set to rotate, and the gear set then drives the clutch (6) to operate through the linkage assembly, thereby causing the generator (7) to generate electricity, thereby performing an energy release operation mode; The transmission frame 1 (11) is rotatably provided with a plurality of transmission rods (17), and the transmission rods (17) pass through the transmission frame 2 (12); The buoyancy adjustment mechanism comprises: A deep water frame (20), wherein a plurality of deep water frames (20) are provided, and each of the deep water frames (20) corresponds to the transmission rod (17) on a one-to-one basis. The deep water frame (20) is fixedly provided in the transmission channel (2), and one end of the transmission rod (17) extends into the deep water frame (20); A driving wheel (21), the driving wheel (21) being rotatably disposed in the deep water frame (20), and a transmission chain being provided between the driving wheel (21) and a tensioning sleeve at one end of the transmission rod (17); A buoyancy assembly, the buoyancy assembly being arranged on the transmission chain and being used for rising and falling in seawater to store energy; When the transmission rod (17) rotates, it drives the transmission chain to move with the driving wheel (21) as support; when the transmission chain moves, it drives the buoyancy component to move up and down; The buoyancy assembly comprises: A passing groove (22), wherein the passing groove (22) is opened on the side of the deep water frame (20); A connecting rod (23), each transmission chain is fixedly provided with the connecting rod (23), and the connecting rod (23) passes through the through slot (22); A motion frame (24), the motion frame (24) being arranged on the connecting rods (23) and being connected and fixed to each of the connecting rods (23); the motion frame (24) being sleeved on the outside of the plurality of deep-water frames (20); A float (25), wherein a plurality of floats (25) are provided, and the plurality of floats (25) are provided on the motion frame (24); When the transmission rods (17) rotate simultaneously, the corresponding transmission chains are driven to move through the support of the corresponding driving wheels (21), thereby driving the connecting rods (23) to move up and down along the through slots (22) on the sides of the deep water frame (20); when all the connecting rods (23) move up and down, they drive the motion frame (24) to move up and down; because the deep water frame (20) is immersed in the water, the motion frame (24) surrounds the deep water frame (20), and therefore, the motion frame (24) can be raised and lowered within the range in which the deep water frame (20) is immersed in the water.

2. The offshore wind power system energy storage device according to claim 1, characterized in that: The clutch (6) is provided with a transmission shaft 1 (8), a transmission shaft 2 (9) and a transmission shaft 3 (10); the transmission shaft 1 (8) is connected to the blade (5), the transmission shaft 2 (9) is connected to the generator (7); the transmission shaft 3 (10) is in transmission connection with one end of the driving mechanism; The transmission shaft 1 (8), the transmission shaft 2 (9) and the transmission shaft 3 (10) are all driven by the gear device matched with each other inside the clutch (6); by adjusting the gear device inside the clutch (6), the mutual transmission between the transmission shaft 1 (8), the transmission shaft 2 (9) and the transmission shaft 3 (10) can be controlled; the clutch (6) can adjust the transmission shaft 1 (8) to drive the transmission shaft 2 (9) to rotate, so as to perform a wind power generation operation; the clutch (6) can adjust the transmission shaft 1 (8) to drive the transmission shaft 3 (10) to rotate, so as to perform an energy storage operation in which wind energy is converted into buoyancy; the clutch (6) can adjust the transmission shaft 3 (10) to drive the transmission shaft 2 (9) to rotate, so as to perform an energy release operation.

3. The offshore wind power system energy storage device according to claim 2, characterized in that: The linkage component includes: A linkage frame (13), the linkage frame (13) being fixedly arranged in the column (3); Transmission wheel one (14), the transmission wheel one (14) is rotatably arranged in the linkage frame (13), and the transmission wheel one (14) is connected to the transmission shaft three (10); A second transmission wheel (15), the second transmission wheel (15) is rotatably disposed in the linkage frame (13), the first transmission wheel (14) is transmission-connected to the second transmission wheel (15), the second transmission wheel (15) is provided with a drive rod (16), the drive rod (16) passes through the linkage frame (13) and the first transmission frame (11); A transmission member is provided between the transmission wheel 1 (14) and the transmission wheel 2 (15); when the transmission shaft 3 (10) drives the transmission wheel 1 (14) to rotate, the transmission member drives the transmission wheel 2 (15) to rotate; when the transmission wheel 2 (15) rotates, the driving rod (16) is driven to rotate.

4. The offshore wind power system energy storage device according to claim 3, characterized in that: One of the transmission rods (17) is connected to the driving rod (16); when the driving rod (16) rotates, it drives one of the transmission rods (17) to rotate.

5. The offshore wind power system energy storage device according to claim 4, characterized in that: The gear set includes: A bevel gear (18), wherein a plurality of the bevel gears (18) are provided, and each of the bevel gears (18) is provided at one end of each of the transmission rods (17); A gear ring (19), wherein two gear rings (19) are provided, and the two gear rings (19) are provided on upper and lower sides of the plurality of bevel gears (18), and the gear rings (19) are rotatably provided on the transmission frame (11), and the plurality of bevel gears (18) are all meshed with the two gear rings (19); When the driving rod (16) rotates, it drives the transmission rod (17) connected thereto to rotate. When the transmission rod (17) rotates, it drives the bevel gear (18) at its end to rotate, thereby driving the two gear rings (19) to rotate on the transmission frame (11). When the two gear rings (19) rotate, they drive the other bevel gears (18) to rotate simultaneously, thereby driving the other transmission rods (17) to rotate, thereby achieving the same speed rotation of all the transmission rods (17).

6. The method for operating the offshore wind power system energy storage device according to claim 5, characterized in that: The following steps are involved: Step S1, by adjusting the clutch (6), the offshore wind power system energy storage device performs the wind power generation working condition of step S2, the energy storage working condition of converting wind energy into buoyancy of step S3, and the energy release working condition of step S4 as needed; Step S2, wind power generation condition: In the wind power generation operating condition, the clutch (6) is adjusted to make the transmission shaft 1 (8) and the transmission shaft 2 (9) transmit, disconnect the transmission shaft 3 (10) and the transmission shaft 1 (8), and disconnect the transmission between the transmission shaft 3 (10) and the transmission shaft 2 (9); The blades (5) rotate under the action of wind. When the blades (5) rotate, the transmission action between the transmission shaft 1 (8) and the transmission shaft 2 (9) of the clutch (6) drives the generator (7) to generate electricity; Step S3, wind energy is converted into buoyancy energy storage condition: When the wind energy is converted into buoyancy energy storage working condition, the clutch (6) is adjusted to make the transmission shaft 1 (8) and the transmission shaft 3 (10) transmit the power, and the transmission between the transmission shaft 3 (10) and the transmission shaft 2 (9) is disconnected, so that the transmission shaft 1 (8) and the transmission shaft 2 (9) can transmit or disconnect the power; The blade (5) rotates under the action of wind, and through the transmission action between the transmission shaft 1 (8) and the transmission shaft 3 (10) of the clutch (6), when the blade (5) rotates, the transmission shaft 1 (8) is driven to rotate, and then the transmission shaft 3 (10) is driven to rotate; When the transmission shaft 3 (10) rotates, the motion frame (24) in the buoyancy regulating mechanism is driven to steadily descend through the driving mechanism, thereby causing the float (25) to move into the water, converting wind energy into buoyancy, and performing an energy storage condition of converting wind energy into buoyancy; Step S4, energy release condition: In the energy release working condition, the clutch (6) is adjusted to enable transmission between the transmission shaft 3 (10) and the transmission shaft 2 (9), and to disconnect the transmission between the transmission shaft 1 (8) and the transmission shaft 3 (10); the transmission between the transmission shaft 1 (8) and the transmission shaft 2 (9) can be either transmitted or disconnected; The float (25) moves upward under the action of buoyancy, thereby driving the motion frame (24) to move upward; when the motion frame (24) moves upward, the drive mechanism drives the transmission shaft three (10) to rotate, and the transmission shaft three (10) drives the transmission shaft two (9) to rotate, thereby driving the generator (7) to generate electricity, completing energy release.

7. The operating method according to claim 6, characterized in that: When the wind energy is converted into buoyancy energy storage working condition, when the transmission shaft 3 (10) rotates, the motion frame (24) in the buoyancy adjustment mechanism is driven to steadily descend through the driving mechanism, specifically: When the transmission shaft 3 (10) rotates, it drives the transmission wheel 1 (14) to rotate, and the transmission wheel 1 (14) drives the transmission wheel 2 (15) to rotate through the transmission member; when the transmission wheel 2 (15) rotates, it drives the connected driving rod (16) to rotate; When the driving rod (16) rotates, it drives one of the transmission rods (17) connected thereto to rotate; When the transmission rod (17) rotates, it drives the bevel gear (18) at its end to rotate, thereby driving the two gear rings (19) to rotate on the transmission frame (11); when the two gear rings (19) rotate, they drive the other bevel gears (18) to rotate at the same time, thereby driving the other transmission rods (17) to rotate, thereby achieving uniform rotation of all the transmission rods (17); When all the transmission rods (17) rotate at a uniform speed, they drive each transmission chain to move with the driving wheel (21) as support; when the transmission chain moves, it drives the connecting rod (23) to descend in the groove (22), and all the connecting rods (23) drive the motion frame (24) to descend stably; When the energy release operation is in progress, the moving frame (24) moves upward, and the drive shaft 3 (10) is driven to rotate by the driving mechanism, specifically: When the motion frame (24) moves upward, it drives the connecting rod (23) to move upward in the groove (22); when each connecting rod (23) moves upward, it drags the transmission chain to move; the movement of the transmission chain drives the transmission rod (17) to rotate, and the transmission rod (17) then drives the driving rod (16) to rotate through the engagement of the bevel gear (18) and the gear ring (19); the driving rod (16) drives the transmission wheel 2 (15) to rotate; the transmission wheel 2 (15) drives the transmission wheel 1 (14) to rotate through the transmission member, and then drives the transmission shaft 3 (10) to rotate.

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