Small floating sea wave power generation device

Abstract

This application discloses a small floating wave energy generation device, belonging to the field of marine renewable energy development and utilization. It includes: an inflatable float; an underwater integrated component incorporating a hydraulic energy conversion structure and / or a mechanical energy conversion structure; a levitation and anchoring component; and an energy storage module. The inflatable float comprises an annular air bladder, a storage tank disposed within the annular air bladder, a partition plate disposed within the storage tank, a cutting structure disposed on one side of the partition plate, and a power transmission structure disposed on the cutting structure and connected to the inflatable float. The partition plate divides the storage tank into a first chamber for storing Na₂O₂ or CaC₂ reagents and a second chamber for storing water. The beneficial effect of this application is the rapid and automatic expansion of the air bladder. This design completely eliminates the dependence on external high-pressure gas cylinders or air compressors, achieving immediate deployment upon water entry, suitable for emergency airdrop deployment or rapid deployment by small vessels.

Description

Technical Field

[0001] This application relates to the field of marine renewable energy development and utilization, and in particular to a small floating wave energy power generation device. Background Technology

[0002] With the rapid development of marine monitoring and the marine Internet of Things industry, the demand for distributed, unattended power supply systems for small and medium-sized marine equipment is becoming increasingly urgent. Wave energy, as a clean and renewable energy source, has seen its miniaturized utilization become a research hotspot in the industry. Currently, mainstream micro wave energy generation devices adopt a technical architecture of "float capture - mechanical / hydraulic transmission - generator - energy storage." The core working logic is as follows: a fixed-size float receives the force of ocean waves, transferring mechanical energy to a single energy storage transmission mechanism to drive a generator to produce electricity. A fixed anchoring device is used to achieve positioning at sea, and the energy storage battery is often designed in conjunction with the energy storage structure.

[0003] Existing technologies generally include a floating body, a single energy storage transmission mechanism, a generator, a fixed anchoring device, and a linked energy storage battery. The components are mechanically connected in sequence, the anchoring device adopts a fixed counterweight structure, and the energy storage battery is directly linked to the energy storage transmission mechanism.

[0004] Existing technologies still face the following technical bottlenecks in practical applications:

[0005] Traditional wave energy capture floats are mostly made of fiberglass or steel rigid structures, which are huge and non-foldable. They occupy a lot of space when transported on land and deployed at sea, and require large specialized engineering vessels and lifting equipment for hoisting operations, making construction complicated and costly.

[0006] The few devices that use inflatable floats usually require additional high-pressure gas cylinders or rely on air compressors carried by the deployment vessel for on-site inflation. High-pressure gas cylinders pose safety hazards and add weight, while on-site inflation operations are extremely difficult to perform in harsh sea conditions, making rapid and automated deployment challenging. Summary of the Invention

[0007] To address the challenges of large, non-foldable devices that are difficult to deploy quickly and automatically, this application provides a small floating wave energy generation device.

[0008] The small floating wave energy generation device provided in this application adopts the following technical solution:

[0009] A small floating wave energy generation device includes: an inflatable float placed on the sea surface to capture wave energy and perform reciprocating linear motion; an underwater integrated component located below the float, integrating a hydraulic energy conversion structure and / or a mechanical energy conversion structure; a suspension anchoring component connected to the bottom of the underwater integrated component via an adaptive mooring line; and an energy storage module connected to the mechanical energy conversion structure and / or the hydraulic energy conversion structure. The inflatable float includes an annular airbag, a storage tank disposed within the annular airbag, a partition plate disposed within the storage tank, a cutting structure disposed on one side of the partition plate, and a power transmission structure disposed on the cutting structure and connected to the inflatable float. The partition plate divides the storage tank into a first chamber for storing Na2O2 or CaC2 reagent and a second chamber for storing water.

[0010] Furthermore, the underwater integrated component has a built-in drive rod driven by the reciprocating linear motion; the mechanical energy conversion structure includes at least a permanent magnet generator with a rotational energy input end; the drive rod is connected to the input end of the permanent magnet generator via at least a rotating structure.

[0011] Furthermore, the rotating structure includes: a first rotating tube disposed within the main body and rotatably connected to the main body; a first arc-shaped groove is formed in the wall of the first rotating tube, and a first crossbar is provided on the drive rod, the first crossbar passing through the first arc-shaped groove.

[0012] Furthermore, the mechanical energy conversion structure includes: a rotating frame, an elastic component disposed on the rotating frame, a transmission component connecting the input end of the permanent magnet generator and the elastic component, a pawl disposed on the rotating frame, and a ratchet disposed on the rotating tube; the pawl engages with the ratchet.

[0013] The rotating frame rotates in one direction using a ratchet and pawl mechanism. Since the drive rod reciprocates under the influence of the inflatable float, the rotating tube rotates back and forth. The ratchet and pawl mechanism transforms the reciprocating rotation of the rotating tube into the unidirectional rotation of the rotating frame. The elastic component is a coil spring. Thus, with each rotation of the rotating frame, the coil spring slowly releases its elasticity, causing the input end of the permanent magnet generator to continuously rotate for power generation, resulting in more stable power output.

[0014] Furthermore, the transmission component includes a transmission gear mounted on the coil spring and a speed-increasing mechanism connected between the transmission gear and the permanent magnet generator. The speed-increasing mechanism is a gear meshing mechanism, utilizing a large transmission gear, a medium gear, and a small gear in the speed-increasing mechanism. The large gear meshes with the medium gear, and the medium gear meshes with the small gear. The small gear is connected to the input end of the permanent magnet motor.

[0015] Furthermore, the hydraulic energy conversion structure includes: a hydraulic generator, a hydraulic pump, a first check valve, a second check valve, and a hydraulic oil tank; the inlet of the hydraulic pump is connected to the hydraulic oil tank through the first check valve; the outlet of the hydraulic pump is connected to the hydraulic pump through the second check valve; and the drive rod is directly or indirectly connected to the input end of the hydraulic pump.

[0016] Furthermore, the hydraulic energy conversion structure further includes: a second rotating tube, which is disposed within the main body and rotatably connected to the main body; a second arc-shaped groove is formed in the wall of the second rotating tube, and a second crossbar is provided on the drive rod, the second crossbar passing through the second arc-shaped groove; an eccentric protrusion is directly or indirectly provided on the outer wall of the second rotating tube, and a spring-loaded component is provided at the input end of the hydraulic pump, the input end of the hydraulic pump being pressed against the eccentric protrusion through the spring-loaded component.

[0017] Furthermore, a support plate is provided in the annular airbag, the support plate is connected to the drive rod, and the power transmission structure is disposed between the support plate and the cutting structure.

[0018] Furthermore, the cutting structure includes: a guide rod, an insert rotatably mounted on the guide rod, a first connecting part and a cutter fixed on the insert, and a spring component mounted on the first connecting part; the power transmission structure includes: a tube and an insert rod inserted into the sleeve; the cutter abuts against the insert rod, and the top of the insert rod is connected to the bearing plate.

[0019] In summary, the beneficial technical effects of this application are as follows:

[0020] The inflatable float of this application is in a folded, uninflated state before use, making it compact and easy to transport and store in large quantities. An ingeniously designed isolation plate inside the float separates water from the Na2O2 or CaC2 reagent. During deployment, wave force drives the power transmission structure, causing the cutting structure to puncture the isolation plate and trigger a chemical reaction: Na2O2 reacts with water to produce oxygen, or CaC2 reacts with water to produce acetylene gas, thus achieving rapid and automatic inflation of the airbag. This design completely eliminates the reliance on external high-pressure gas cylinders or air compressors, allowing for immediate deployment upon water entry, making it suitable for emergency airdrop deployment or rapid deployment by small boats. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0022] Figure 2 yes Figure 1 A partial structural diagram;

[0023] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0024] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle;

[0025] Figure 5 yes Figure 3 Enlarged schematic diagram of part B;

[0026] Figure 6 This is a schematic diagram of a mechanical energy conversion structure;

[0027] Figure 7 This is a schematic diagram of the hydraulic energy conversion structure;

[0028] Figure 8 This is a schematic diagram of the internal structure of the storage box;

[0029] Figure 9 yes Figure 8 A partial structural diagram.

[0030] Figure label:

[0031] 1. Inflatable float; 11. Annular airbag; 12. Storage box; 121. First chamber; 122. Second chamber; 123. Air duct; 13. Isolation plate; 14. Cutting structure; 141. Guide rod; 142. Insertion tube; 143. First connecting part; 144. Cutter; 145. Spring component; 15. Power transmission structure; 151. Sleeve; 152. Insertion rod; 16. Bearing plate;

[0032] 2. Underwater integrated components; 21. Main body; 211. Mounting cavity;

[0033] 3. Drive lever;

[0034] 4. Mechanical energy conversion structure; 41. Permanent magnet generator; 42. Rotating structure; 421. First rotating tube; 422. First arc-shaped groove; 423. First crossbar; 43. Rotating frame; 44. Elastic component; 45. Transmission component; 451. Transmission gear; 452. Medium gear; 453. Small gear; 46. Pawl; 47. Ratchet;

[0035] 5. Hydraulic energy conversion structure; 51. Hydraulic generator; 52. Hydraulic pump; 53. First check valve; 54. Second check valve; 55. Hydraulic oil tank; 56. Second rotating tube; 561. Second arc groove; 562. Second crossbar; 563. Eccentric protrusion; 57. Springback component;

[0036] 6. Dynamic suspension anchoring; 61. Suspended anchor body; 62. Adaptive mooring rope;

[0037] 7. Energy storage module. Detailed Implementation

[0038] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed description of a small floating wave energy generation device according to this application. It should be understood that the following detailed embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this application. Where there is no conflict, the technical features in the following embodiments can be combined with each other.

[0039] It should be noted that in the description of this application, terms such as "upper," "lower," "top," "bottom," "inner side," "outer side," "along the axial direction," and "along the radial direction," etc., are used only for the convenience of describing this application in conjunction with the accompanying drawings and for simplifying the description, and do not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. For those skilled in the art, appropriate adjustments can be made according to the actual installation state, sea conditions, and structural layout without departing from the concept of this application.

[0040] It should also be noted that the terms "connection," "setup," "assembly," "fixing," and "rotational connection" should be interpreted broadly. For example, "connection" can be a direct connection or an indirect connection through an intermediate component; it can be a detachable connection or an integral connection; it can be a mechanical connection, an electrical connection, a hydraulic connection, or a control connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] Furthermore, the use of "and / or" in this text indicates any one, any two, or any combination of related objects. For example, "mechanical energy conversion structure 4 and / or hydraulic energy conversion structure 5" can mean that only mechanical energy conversion structure 4 is provided, only hydraulic energy conversion structure 5 is provided, or both mechanical energy conversion structure 4 and hydraulic energy conversion structure 5 are provided simultaneously.

[0042] Reference Figures 1-9 This embodiment provides a small floating wave energy generation device, including: an inflatable float 1, an underwater integrated component 2, a suspension anchoring component, and an energy storage module 7.

[0043] Among them, the inflatable float 1 is placed on the sea surface to capture wave energy and make reciprocating linear motion under the action of waves, specifically including up and down reciprocating motion in the vertical direction.

[0044] The underwater integrated assembly 2 is located below the float and can be positioned at a predetermined depth below the sea surface. It contains a drive rod 3 driven by the reciprocating linear motion and integrates a hydraulic energy conversion structure 5 and / or a mechanical energy conversion structure 4. The drive rod 3 is connected to the hydraulic energy conversion structure 5 and / or the mechanical energy conversion structure 4 to transmit the mechanical motion generated by the float relative to the underwater integrated assembly 2 to the corresponding energy conversion unit.

[0045] The levitation anchoring component is connected to the bottom of the underwater integrated module 2 and extends towards the seabed. It is used to maintain the wave-affected attitude of the buoy and provide flexible constraint and levitation support for the underwater integrated module 2 by pulling downward. The levitation anchoring component is connected to the bottom of the underwater integrated module 2 and extends towards the seabed through an adaptive mooring line 62. The adaptive mooring line 62 is in a slack state under normal conditions. That is, when the inflatable buoy 1 pulls the underwater integrated module 2 upward, the underwater integrated module 2 is pulled upward a greater distance when the waves are large. At this time, the adaptive mooring line 62 is pulled from the slack state to the taut state, thereby preventing the underwater integrated module 2 from moving too high. This allows the lower integrated module to maintain a suitable relative position in the wave environment, improving energy capture efficiency and structural stability.

[0046] The energy storage module 7 is connected to the mechanical energy conversion structure 4 and / or the hydraulic energy conversion structure 5 to store the generated electrical energy. It can also be further connected to rectifier modules, voltage regulator modules, energy management modules, inverter modules, monitoring modules and load interfaces to meet the power supply requirements of marine monitoring equipment, communication relay equipment, navigation marker equipment, marine sensor arrays or grid-connected units.

[0047] In one embodiment, the inflatable float 1, the underwater integrated assembly 2, and the suspension anchoring assembly are arranged coaxially along a vertical axis. The float is located near the sea surface, the underwater integrated assembly 2 is in a water layer with relatively small wave disturbance, and the suspension anchoring assembly extends further towards the seabed and is anchored thereto. Mechanical and / or hydraulic power generation is directly achieved using the reciprocating motion of the surface float.

[0048] In one embodiment, the inflatable float 1 includes an annular airbag 11, a storage box 12 disposed within the annular airbag 11, an isolation plate 13 disposed within the storage box 12, a cutting structure 14 disposed on one side of the isolation plate 13, and a power transmission structure 15 disposed on the cutting structure 14.

[0049] The annular airbag 11 is used to provide buoyancy to the main body 21. Designing the airbag as an annular shape is beneficial for forming a stable circumferential buoyancy distribution. On the other hand, the central area is used to reserve installation space for the drive rod 3, the bearing plate 16 and related transmission components 45, which facilitates structural integration and force transmission.

[0050] A support plate 16 is provided in the annular airbag 11, and the support plate 16 is connected to the drive rod 3. The support plate 16 can be located in the central area of ​​the annular airbag 11 to bear the buoyancy of the airbag. The support plate 16 can be made of corrosion-resistant metal materials, composite materials or reinforced engineering plastics to balance strength, weight and seawater corrosion resistance.

[0051] The storage tank 12 is preferably fixedly disposed within the internal space enclosed by the annular airbag 11. A separator 13 divides the storage tank 12 into a first chamber 121 and a second chamber 122. The first chamber 121 is used to store Na2O2 or CaC2 reagents, and the second chamber 122 is used to store water. The two chambers are isolated from each other by the separator 13 to prevent reaction.

[0052] When the cutting structure 14 is activated, it cuts or destroys the isolation plate 13. The Na2O2 or CaC2 reagent in the first chamber 121 comes into contact with the water in the second chamber 122 and reacts to generate oxygen, thereby inflating the annular airbag 11. This allows the entire annular airbag 11 to maintain a small volume before deployment, transportation, or arrangement, and then automatically expands after entering the water or reaching the predetermined working conditions, facilitating transportation and offshore deployment.

[0053] In some embodiments, the storage tank 12 and the annular airbag 11 are connected by an air guide channel 123 provided on the wall of the storage tank 12, and the gas generated by the reaction enters the annular airbag 11 through the air guide channel 123. A flow restrictor or a one-way valve can be provided on the air guide channel 123 to improve the uniformity and safety of inflation.

[0054] In practical implementation, Na2O2 can be designed in granular, flake, or block form; the water can be fresh water. As long as it can be stored in an isolated state and mixed to generate gas after cutting, it falls within the scope of the technical concept of this application.

[0055] In one embodiment, the cutting structure 14 includes a guide rod 141, an insertion tube 142 rotatably disposed on the guide rod 141, a first connecting part 143 fixed on the insertion tube 142, a cutter 144, and a spring member 145 disposed on the first connecting part 143.

[0056] The guide rod 141 is used to guide and support the movement trajectory of the cannula 142. The cannula 142 can rotate relative to the guide rod 141 and / or swing within a certain range. The first connecting part 143 serves as a connection and force-bearing transition member. One end of the first connecting part 143 is fixed to the cannula 142; the other end is fixed to the spring member 145, which may be a tension spring. The power transmission structure 15 includes a sleeve 151 and a rod 152 inserted into the sleeve 151. The top of the rod 152 is connected to the support plate 16. The cutter 144 abuts against the rod 152. This abutment is caused by the external force applied by the elastic member 44, which causes the cutter 144 on the cannula 142 to rotate in the direction toward the rod 152.

[0057] In the initial stage of device deployment or use, when the support plate 16 is displaced by buoyancy, waves, or a preset trigger action, since both the support plate 16 and the storage tank 12 are fixed to the annular airbag 11, relative movement will occur between them. That is, the support plate 16 will move upward or downward due to buoyancy, while the storage tank 12, due to its different gravity or surface area compared to the support plate 16, will move upward or downward by a different amount than the support plate 16. This will result in at least one instance where the support plate 16 moves upward, pulling the insertion rod 152 outward from the sleeve 151. At this time, the insertion rod 152 will not be in contact with the cutter 144, and the cutter 144 will rotate under the action of the spring component 145, causing the cutter 144 to cut the isolation plate 13. After the isolation plate 13 ruptures, the Na2O2 or CaC2 reagent comes into contact with and reacts with the water, generating gas and inflating the annular airbag 11. As the airbag inflates, the float gains sufficient buoyancy and enters the working state.

[0058] In one embodiment, the cutter 144 can be a blade-type, needle-type, wedge-type, or membrane-breaking structure; the separator 13 can be a thin film, a brittle separator, a cutable sheet, or a composite separator layer. As long as the two chambers can be connected under the displacement trigger of the support plate 16, they can fall within the protection scope of this application.

[0059] With the above settings, the inflatable float 1 can be deployed without an external air pump or manual inflation, making it particularly suitable for long-distance maritime transport, self-deployment, and emergency applications.

[0060] In one embodiment, the underwater integrated assembly 2 includes a body 21. An installation cavity 211 is formed inside the body 21 to accommodate the mechanical energy conversion structure 4 and / or the hydraulic energy conversion structure 5. The body 21 is preferably a sealed, pressure-resistant shell, which may be a metal shell, a composite material shell, or a multi-layered corrosion-resistant shell structure.

[0061] The upper end of the drive rod 3 is connected to the support plate 16, and the lower end or middle part is connected to the mechanical energy conversion structure 4 and / or the hydraulic energy conversion structure 5. When the float moves up and down relative to the main body 21 under the action of waves, the drive rod 3 generates a reciprocating linear displacement relative to the main body 21, thereby converting the kinetic energy of the drive rod 3 into electrical energy stored in the final storage module.

[0062] In one embodiment, the mechanical energy conversion structure 4 includes at least a permanent magnet generator 41 with a rotational energy input end, and the drive rod 3 is connected to the input end of the permanent magnet generator 41 via at least a rotating structure 42.

[0063] The permanent magnet generator 41 can be a low-speed permanent magnet generator 41, a high-speed permanent magnet generator 41, or an integrated permanent magnet power generation component with a rectifier module. Its input end can be a rotating shaft, a gear shaft, a coupling end, or other input parts suitable for receiving rotational power.

[0064] The drive rod 3 itself performs reciprocating linear motion, while the permanent magnet generator 41 typically requires rotary input. Therefore, the rotary structure 42 converts the linear reciprocating motion of the drive rod 3 into rotary motion to achieve power generation output.

[0065] In one embodiment, the rotating structure 42 includes a first rotating tube 421. The first rotating tube 421 is disposed inside the main body 21 and is rotatably connected to the main body 21. A first arc-shaped groove 422 is formed in the wall of the first rotating tube 421, and a first crossbar 423 is provided on the drive rod 3, the first crossbar 423 passing through the first arc-shaped groove 422.

[0066] In the above structure, when the drive rod 3 moves up and down axially, the first crossbar 423 slides relative to it within the first arc-shaped groove 422. Because the first arc-shaped groove 422 has an arc-shaped trajectory extending circumferentially, the axial displacement of the first crossbar 423 is constrained and converted into torque on the first rotating tube 421, thereby driving the first rotating tube 421 to reciprocate around its axis. The first crossbar 423 can be a through-type round rod, a pin, a roller pin, or a transverse component with a rolling sleeve to reduce contact friction and wear.

[0067] In one embodiment, a rolling bearing or a sliding bearing is provided between the first rotating tube 421 and the main body 21, and a seal is provided to achieve reliable rotation in a marine environment. The number of first arc-shaped grooves 422 can be one or more; multiple arc-shaped grooves can be evenly distributed circumferentially to improve force balance.

[0068] In one embodiment, the mechanical energy conversion structure 4 further includes: a rotating frame 43, an elastic component 44 disposed on the rotating frame 43, a transmission component 45 connecting the input end of the permanent magnet generator 41 and the elastic component 44, a pawl 46 disposed on the rotating frame 43, and a ratchet 47 disposed on the first rotating tube 421; the pawl 46 and the ratchet 47 cooperate.

[0069] The rotating frame 43 can be rotatably mounted relative to the main body 21 or connected to part of the transmission shaft system. The ratchet 47 reciprocates synchronously with the first rotating tube 421, and the pawl 46 is mounted on the rotating frame 43 to drive the rotating frame 43 to rotate synchronously when the first rotating tube 421 rotates in one direction, and to disengage or idle when the first rotating tube 421 rotates in the opposite direction. Thus, the reciprocating rotation of the first rotating tube 421 is converted into the unidirectional rotation of the rotating frame 43.

[0070] The elastic component 44 is preferably a coil spring. One end of the coil spring is connected to the rotating frame 43, and the other end is connected to the transmission component 45 or a corresponding transmission shaft. When the rotating frame 43 rotates unidirectionally under the action of the ratchet 47 and pawl 46, the coil spring is gradually wound up and stores energy; during input intervals or input speed fluctuations, the coil spring releases its elastic energy, driving the transmission component 45 to continuously rotate the input end of the permanent magnet generator 41, thereby reducing the impact of wave excitation discontinuity on power generation output and improving power generation stability.

[0071] That is, through a multi-stage energy conversion link of "reciprocating linear motion - reciprocating rotation - unidirectional stepping rotation - elastic energy storage and slow release - stable unidirectional rotation of generator rotating input", the random, low-frequency, bidirectional mechanical input of ocean waves is effectively rectified into a more continuous rotating input that is more suitable for motor power generation.

[0072] In one embodiment, the transmission component 45 includes a transmission gear 451 disposed on a coil spring and a speed-increasing mechanism connected between the transmission gear 451 and the permanent magnet generator 41.

[0073] Preferably, the transmission gear 451 is a large gear, and the speed-increasing mechanism includes a medium gear 452 and a small gear 453 that mesh with each other. The large gear meshes with the medium gear 452, the medium gear 452 meshes with the small gear 453, and the small gear 453 is connected to the input end of the permanent magnet generator 41.

[0074] Thus, when the coil spring releases energy to drive the large gear to rotate, after being transmitted through the medium gear 452 and the small gear 453, the input end of the permanent magnet generator 41 can rotate at a speed higher than that of the large gear, thereby improving the stability of the generator's operation. This is especially suitable for working conditions where the input frequency of ocean waves is low and the direct drive speed is insufficient.

[0075] In other embodiments, the speed-increasing mechanism may also be a multi-stage gear set, a planetary speed-increasing mechanism, a synchronous belt pulley speed-increasing mechanism, a sprocket speed-increasing mechanism, or a gear and belt combination mechanism.

[0076] In one embodiment, the hydraulic energy conversion structure 5 includes: a hydraulic generator 51, a hydraulic pump 52, a first check valve 53, a second check valve 54, and a hydraulic oil tank 55.

[0077] The inlet of the hydraulic pump 52 is connected to the hydraulic oil tank 55 through the first check valve 53; the outlet of the hydraulic pump 52 is connected to the hydraulic generator 51 through the second check valve 54; the drive rod 3 is directly or indirectly connected to the input end of the hydraulic pump 52.

[0078] During operation, the reciprocating motion of the drive rod 3 drives the hydraulic pump 52 to operate, drawing hydraulic oil from the hydraulic oil tank 55 and pumping it to the hydraulic generator 51. The first check valve 53 ensures a single direction of oil suction, and the second check valve 54 ensures a single direction of oil pressure, thereby achieving hydraulic flow rectification. The hydraulic generator 51 rotates to generate electricity under the drive of the hydraulic flow, and then returns the hydraulic oil to the hydraulic oil tank 55 through the return oil passage, forming a circulation loop.

[0079] Through a hydraulic circuit, the low-speed, high-thrust reciprocating motion caused by waves can be converted into relatively stable hydraulic energy, and then into electrical energy.

[0080] In one embodiment, the hydraulic energy conversion structure 5 further includes a second rotating tube 56. The second rotating tube 56 is disposed inside the main body 21 and is rotatably connected to the main body 21; a second arc-shaped groove 561 is formed in the tube wall of the second rotating tube 56, and a second crossbar 562 is provided on the drive rod 3, the second crossbar 562 passing through the second arc-shaped groove 561.

[0081] The outer wall of the second rotating tube 56 is provided with an eccentric protrusion 563 directly or indirectly, and the input end of the hydraulic pump 52 is provided with a spring-loaded component 57. The input end of the hydraulic pump 52 is pressed against the eccentric protrusion 563 through the spring-loaded component 57.

[0082] In this structure, when the drive rod 3 reciprocates up and down, the second crossbar 562 moves within the second arc-shaped groove 561, thereby driving the second rotating tube 56 to rotate reciprocally around its axis. The eccentric protrusion 563 on the second rotating tube 56 rotates accordingly and periodically presses against the input end of the hydraulic pump 52. The rebound component 57 keeps the input end of the hydraulic pump 52 pressed against the surface of the eccentric protrusion 563, thus achieving the reciprocating extension or oscillating drive of the input end of the hydraulic pump 52 during the changes in the high and low points of the eccentric protrusion 563, thereby completing the pumping action.

[0083] Among them, the springback component 57 can be a compression spring, tension spring, torsion spring, elastic sheet, gas spring or hydraulic reset unit; the eccentric protrusion 563 can be an eccentric wheel, cam, eccentric disc, eccentric ring or a protrusion with an eccentric profile.

[0084] By converting the linear reciprocating motion of the drive rod 3 into the reciprocating rotation of the second rotating tube 56, and then using the eccentric protrusion 563 to convert the rotational motion into periodic input to the hydraulic pump 52.

[0085] The mechanical energy conversion structure and the hydraulic energy conversion structure can work independently or be set up in parallel, thereby improving the overall wave energy utilization rate.

[0086] The hydraulic pump 52 and its surrounding components can be configured in two or more sets to improve power generation efficiency.

[0087] In one embodiment, the drive rod 3 is connected to both the mechanical energy conversion structure 4 and the hydraulic energy conversion structure 5. That is, when the same drive rod 3 moves up and down with the float, it drives the first rotating tube 421 through the first crossbar 423 cooperating with the first arc-shaped groove 422; and drives the second rotating tube 56 through the second crossbar 562 cooperating with the second arc-shaped groove 561.

[0088] Therefore, the mechanical energy input from the waves can be simultaneously distributed to both the mechanical energy conversion structure 4 and the hydraulic energy conversion structure 5. The mechanical power generation path has a fast response and a direct structure, making it suitable for rapid initiation in smaller waves; the hydraulic power generation path has better buffering and voltage stabilization characteristics, making it suitable for smoothing output fluctuations. When the two work together, higher overall power generation efficiency and more stable power output can be achieved under different sea conditions.

[0089] In another embodiment, the device only includes the mechanical energy conversion structure 4 and not the hydraulic energy conversion structure 5. In this case, the drive rod 3 drives the permanent magnet generator 41 to generate electricity only through the rotating structure 42 and its subsequent transmission.

[0090] In another embodiment, the device only includes a hydraulic energy conversion structure 5 and not a mechanical energy conversion structure 4. In this case, the drive rod 3 only drives the hydraulic pump 52 to work, and then generates electricity through the hydraulic generator 51.

[0091] In one embodiment, the buoyancy anchoring assembly is connected to the bottom of the main body 21 and extends towards the seabed to maintain the wave-affected attitude of the buoy. The buoyancy anchoring assembly includes a buoyancy anchor body 61 and an adaptive mooring line 62.

[0092] The suspended anchor 61 and the adaptive mooring line 62 constrain the main body 21 to the predetermined sea area. By rationally designing the cable length, counterweight mass, and anchoring method, the buoy can always maintain an optimal wave-facing state.

[0093] "Maintaining the buoy's wave-receiving attitude" should be understood as ensuring that the buoy's relative attitude and working position with respect to the main incoming wave direction and with respect to the underwater integrated component 2 are within a range suitable for capturing wave energy, without requiring absolute stillness. Therefore, as long as the suspending and anchoring component can maintain the attitude of the device in the marine environment, it falls within the scope of protection of this application.

[0094] In one embodiment, the energy storage module 7 is connected to the mechanical energy conversion structure 4 and / or the hydraulic energy conversion structure 5. The energy storage module 7 may include a battery pack, a supercapacitor pack, a lithium battery module, a lithium iron phosphate battery module, or other energy storage units.

[0095] Furthermore, the energy storage module 7 can be connected to a rectifier circuit, a DC / DC converter circuit, a charging management circuit, an overvoltage protection circuit, an overcurrent protection circuit, and a remote monitoring module. The AC power output from the permanent magnet generator 41 can be rectified to charge the energy storage module 7; the electrical energy output from the hydraulic generator 51 can also be converted and stored according to its output form.

[0096] Work process:

[0097] When the device is in transport, the annular airbag 11 is in a partially inflated or partially folded state. The first chamber 121 and the second chamber 122 in the storage box 12 store Na2O2 or CaC2 and water, respectively, and are separated by the isolation sheet 13.

[0098] After the device is deployed to the sea surface, the support plate 16, under the influence of buoyancy changes, installation and release actions, or initial wave action, drives the insertion rod 152 to move relative to the sleeve 151. The insertion rod 152 presses against the cutter 144, causing the cutter 144 to cut through the isolation plate 13. The first chamber 121 and the second chamber 122 are connected. The Na2O2 agent or CaC2 agent reacts with water to produce gas. The gas enters the annular airbag 11, which gradually inflates and expands. The inflated float 1 generates sufficient buoyancy and floats on the sea surface.

[0099] Subsequently, under the action of the waves, the float drives the supporting plate 16 and the drive rod 3 to move up and down reciprocally. When the drive rod 3 moves relative to the main body 21:

[0100] The first rotating tube 421 is driven to reciprocate through the cooperation of the first crossbar 423 and the first arc groove 422;

[0101] The ratchet 47 on the first rotating tube 421 engages with the pawl 46 on the rotating frame 43 to rectify the reciprocating rotation into a unidirectional rotation of the rotating frame 43.

[0102] The rotating frame 43 drives the coil spring to store energy, and the coil spring then drives the input end of the permanent magnet generator 41 to rotate continuously through the transmission gear 451 and the speed-increasing mechanism, thereby outputting electrical energy;

[0103] Simultaneously or optionally:

[0104] The drive rod 3 drives the second rotating tube 56 to reciprocate through the cooperation of the second crossbar 562 and the second arc-shaped groove 561;

[0105] The eccentric protrusion 563 on the second rotating tube 56 periodically presses against the input end of the hydraulic pump 52, and works with the spring-back component 57 to make the hydraulic pump 52 suck and press oil.

[0106] The hydraulic oil is rectified by the first check valve 53 and the second check valve 54 and then drives the hydraulic generator 51 to generate electricity.

[0107] The electrical energy generated by the mechanical power generation structure and the hydraulic power generation structure is transmitted to the energy storage module 7 for storage, and is supplied to external loads as needed.

[0108] Throughout the process, the suspension and anchoring components maintain a relatively stable force and attitude foundation for the underwater integrated component 2, reducing system drift and ensuring the float's effective response to waves.

[0109] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A small floating wave energy generation device, characterized in that, include: An inflatable float is placed on the sea surface to capture wave energy and make reciprocating linear motion. An underwater integrated component, located below the float, integrates a hydraulic energy conversion structure and / or a mechanical energy conversion structure; The suspending and anchoring component is connected to the bottom of the underwater integrated component via an adaptive mooring line; An energy storage module is connected to the mechanical energy conversion structure and / or the hydraulic energy conversion structure; The inflatable float includes an annular airbag, a storage box disposed within the annular airbag, an isolation plate disposed within the storage box, a cutting structure disposed on one side of the isolation plate, and a power transmission structure disposed on the cutting structure and connected to the inflatable float. The separator divides the storage box into a first chamber for storing Na2O2 or CaC2 reagents and a second chamber for storing water.

2. The small floating wave energy generation device according to claim 1, characterized in that: The underwater integrated component has a built-in drive rod driven by the reciprocating linear motion; The mechanical energy conversion structure includes at least a permanent magnet generator equipped with a rotational energy input terminal; The drive rod is connected to the input end of the permanent magnet generator via at least a rotating structure.

3. The small floating wave energy generation device according to claim 2, characterized in that: The rotating structure includes: a first rotating tube, which is disposed inside the main body and is rotatably connected to the main body; The first rotating tube has a first arc-shaped groove in its wall, and the drive rod has a first crossbar that passes through the first arc-shaped groove.

4. The small floating wave energy generation device according to claim 3, characterized in that: The mechanical energy conversion structure includes: a rotating frame, an elastic component disposed on the rotating frame, a transmission component connecting the input end of the permanent magnet generator and the elastic component, a pawl disposed on the rotating frame, and a ratchet disposed on the rotating tube; the pawl and the ratchet cooperate with each other.

5. The small floating wave energy generation device according to claim 4, characterized in that: The elastic component is a coil spring.

6. The small floating wave energy generation device according to claim 5, characterized in that: The transmission component includes a transmission gear mounted on the coil spring and a speed-increasing mechanism connected between the transmission gear and the permanent magnet generator.

7. The small floating wave energy generation device according to claim 1, characterized in that: The underwater integrated component has a built-in drive rod driven by the reciprocating linear motion; The hydraulic energy conversion structure includes: a hydraulic generator, a hydraulic pump, a first check valve, a second check valve, and a hydraulic oil tank; The inlet of the hydraulic pump is connected to the hydraulic oil tank through the first check valve; the outlet of the hydraulic pump is connected to the hydraulic pump through the second check valve. The drive rod is directly or indirectly connected to the input end of the hydraulic pump.

8. The small floating wave energy generation device according to claim 7, characterized in that: The hydraulic energy conversion structure further includes: a second rotating tube, which is disposed inside the main body and is rotatably connected to the main body; The second rotating tube has a second arc-shaped groove in its wall, and a second crossbar is provided on the drive rod, the second crossbar passing through the second arc-shaped groove; The outer wall of the second rotating tube is provided with an eccentric protrusion directly or indirectly, and the input end of the hydraulic pump is provided with a spring-loaded component, which abuts against the eccentric protrusion through the spring-loaded component.

9. The small floating wave energy generation device according to claim 1, characterized in that: A support plate is provided in the annular airbag, the support plate is connected to the drive rod, and the power transmission structure is disposed between the support plate and the cutting structure.

10. The small floating wave energy generation device according to claim 9, characterized in that: The cutting structure includes: a guide rod, an insertion tube rotatably mounted on the guide rod, a first connecting part and a cutter fixed on the insertion tube, and a spring component mounted on the first connecting part; The power transmission structure includes: a sleeve and a rod inserted into the sleeve; The cutter abuts against the insert rod, and the top of the insert rod is connected to the support plate.

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