Bottom-sitting type rotating and swinging ocean current power generation device

Abstract

The invention discloses a bottom-sitting type rotating and swinging ocean current power generation device, and belongs to the technical field of ocean current power generation devices. Comprising a rotating and swinging vibrator, a rotating and swinging guide rod, a rotating and swinging disc, a vortex-induced transmission device, a central transmission device and a barrel-shaped foundation. According to the invention, the vibrator group arranged along the water flow drives the rotary swing disc containing the annular gear ring through the rotary swing guide rod, and bidirectional swing is converted into unidirectional continuous rotation through a gear structure; the central transmission device is integrated with power to drive the generator; the cylindrical foundation provides stable support and is provided with a water and gas adjusting system, floating and sinking of the device are controlled through a charging and discharging valve, efficient energy conversion is achieved through a compound gear meshing mechanism, and meanwhile the seabed self-adaptive installation capacity is achieved.

Description

Technical Field

[0001] This application belongs to the technical field of ocean current power generation devices, and specifically relates to a bottom-mounted swinging ocean current power generation device. Background Art

[0002] As an emerging technology for utilizing ocean energy, flow-induced vibration power generation generates mechanical energy through the vibration of a fluid-induced energy capture body and converts it into electrical energy, with advantages such as a low starting flow velocity and a high energy density. Currently, in the existing technology, a linear vibration or single-column swinging structure is generally adopted. Although energy capture can be achieved, there are still significant problems: 1. Large and uncontrollable vibration amplitude: The linear vibration or single-column swinging structure is prone to large-scale vibration under the action of ocean currents, resulting in increased mechanical fatigue, affecting the device life, and at the same time increasing the requirement for the installation space.

[0003] 2. Insufficient installation adaptability: The existing devices lack a clear foundation structure design, making it difficult to adapt to complex seabed geological conditions, and the towing, sinking, and fixing technologies are not yet mature, resulting in low deployment efficiency.

[0004] 3. Limited energy conversion efficiency: When the traditional structure directly transmits vibration to the generator, due to the discontinuous movement direction, a complex mechanism is required to achieve energy conversion, increasing the system complexity and cost.

[0005] In addition, the existing flow-induced vibration power generation devices also have deficiencies in corrosion resistance, anti-marine organism attachment ability, and long-term operation stability, restricting their large-scale application.

[0006] In view of the above problems, there is an urgent need for a new type of ocean current power generation device that can limit the vibration amplitude while achieving stable conversion of mechanical energy into electrical energy through an efficient transmission structure, and combining modular design and mature foundation installation technology to improve the reliability, adaptability, and economy of the device, thereby breaking through the practical application bottleneck of flow-induced vibration power generation technology. Summary of the Invention

[0007] This application provides a bottom-mounted swinging ocean current power generation device, which adopts a swinging structure and combines a cylindrical foundation, with significant applicability, effectively providing an application scenario for flow-induced vibration power generation.

[0008] This application provides a bottom-mounted swinging ocean current power generation device, and the technical solution adopted is as follows, including: Swinging oscillators, with at least two arranged along the water flow direction, fixed at the bottom on an oscillator mounting plate, and connected and fixed at the top through an oscillator locking plate; Swinging guide rods, with a quantity of 2 to 4, arranged below the oscillator mounting plate, and their bottoms are connected to a swinging plate; Vortex-induced transmission device, used to change the reciprocating motion of the swinging plate into a one-way continuous motion; The central drive device includes a second waterproof protective housing, a generator, a central drive shaft, and a rotatable mounting base. The generator is disposed within the rotatable mounting base, and the central drive shaft is rotationally connected to the output end of the generator. The cylindrical foundation has its top connected and fixed to the bottom of the central drive device. Its interior is a cylindrical foundation cavity, and multiple water and gas charging and discharging valves are provided at the top of the cylindrical foundation.

[0009] Further, the vortex-induced drive device includes a waterproof protective housing, a swing plate, a sun gear, a sun gear shaft, planetary gears, a first ratchet, a second ratchet, a drive gear, a first pawl, a second pawl, and a central drive shaft. The swing plate, sun gear, sun gear shaft, planetary gears, first ratchet, second ratchet, drive gear, first pawl, second pawl, and central drive shaft are all disposed inside the waterproof protective housing. An annular gear ring is provided inside the swing plate. The number of planetary gears is multiple, and they are all meshed with the annular gear ring inside the swing plate. The sun gear is located in the middle of the multiple planetary gears and meshes with the planetary gears. A drive disk is fixedly installed on the upper part of the first ratchet, and the sun gear shaft is fixed in the middle of the drive disk on the upper part of the first ratchet to control the rotation of the first ratchet. The first pawl and the second pawl are fixedly installed on the central drive shaft. A drive gear is commonly meshed between the first ratchet and the second ratchet, and the bottom of the second ratchet is installed on the surface of the rotatable mounting base.

[0010] Further, annular gear rings are provided inside both the first ratchet and the second ratchet. The first pawl will mesh with the first ratchet when the first ratchet rotates forward, and the first pawl will not mesh with the first ratchet when the first ratchet rotates backward. The second pawl will mesh with the second ratchet when the second ratchet rotates forward, and the second pawl will not mesh with the second ratchet when the second ratchet rotates backward.

[0011] Further, a spring layer is also included, which is annularly arranged around the swing guide rod to provide a restoring force for the reciprocating motion.

[0012] Further, an energy storage charging and discharging battery pack is also included, which is connected to the generator through a charging cable for storing electrical energy.

[0013] Further, the swing oscillator, the oscillator locking disk, and the oscillator mounting disk are all made of stainless steel material or polymer material.

[0014] Further, the diameter of the swing oscillator is 0.5 m, the diameter of the swing plate is 3 m, and the swing plate is made of aluminum alloy material.

[0015] Further, the diameter of the cylindrical foundation is 4 m, it is made of steel, and its interior is coated with epoxy resin.

[0016] Further, the generator is a low-speed permanent magnet underwater generator.

[0017] Furthermore, the whole device adopts a modular design. All components are pre-installed in the factory and then towed and floated to the target sea area. The internal pressure of the cylindrical foundation is adjusted through the water and gas charging and discharging valves to achieve sinking and fixation.

[0018] Advantages of the present application: 1. The present application provides an ocean current power generation device applicable to the marine environment, which can effectively utilize fluid-induced vibration (such as vortex-induced vibration and galloping) for power generation. By means of a clear installation method (modular design, towing and sinking) and operation method (converting the swinging motion into a unidirectional rotation), the problems of unclear application scenarios and complex installation in the prior art are solved, providing reliable technical support for ocean energy development.

[0019] 2. Through the synergistic effect of the swing guide rod, the oscillator locking disc and the spring layer, the vibration range and amplitude of the swing oscillator are restricted, avoiding damage to the structure caused by excessive vibration. This precise control not only improves the reliability of the device, but also lays a foundation for large-scale application.

[0020] 3. The present application adopts a swing motion mode, and efficiently converts the reciprocating swing into a unidirectional continuous rotational motion through a planetary gear set. This design can directly apply a mature rotary underwater generator, reducing the power generation cost and improving the energy conversion efficiency at the same time.

[0021] 4. The mechanical structure design of the present application is simple. Key components (such as swing oscillators, swing discs, and gear sets) adopt modular design, which is easy to process and manufacture. In addition, the whole device can be directly towed to the target sea area after pre-installation in the factory, and rapid sinking and fixation are achieved through water and gas charging and discharging valves, significantly reducing the on-site installation difficulty.

[0022] 5. Key components such as swing oscillators, swing discs, and cylindrical foundations in the present application adopt high-strength anti-corrosion materials such as stainless steel and aluminum alloy, and the surface is coated with an anti-biological adhesion coating to ensure the long-term stable operation of the device in a harsh marine environment. Description of the drawings

[0023] For ease of explanation, the present application will be described in detail by the following specific embodiments and drawings.

[0024] Figure 1 is the structural schematic diagram of the present application; Figure 2 is the sectional view and gear meshing diagram of the present application; Figure 3 is the top view of the present application; Figure 4 is the installation layout diagram of the present application.

[0025] In the figure: 1. Oscillator locking disc; 2. Swing oscillator; 3. Oscillator mounting disc; 4. Vortex-induced drive device; 5. Central drive device; 6. Water and gas charging and discharging valve; 7. Cylindrical foundation; 8. Cylindrical foundation cavity; 9. Swing guide rod; 10. Swing plate; 11. Planetary gear; 12. Ratchet one; 13. Ratchet two; 14. Transmission gear; 15. Pawl one; 16. Pawl two; 17. Central drive shaft; 18. Generator; 19. Spring layer; 20. Sun gear; 21. Sun gear shaft; 22. Transmission disc; 23. Rotatable mounting seat. Specific embodiments

[0026] The following are specific embodiments of the present application and in combination with the accompanying drawings, the technical solutions of the present application are further described, but the present application is not limited to these embodiments; in the following description, providing specific details such as specific configurations and components is only to help comprehensively understand the embodiments of the present application. Therefore, those skilled in the art should clearly understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of known functions and structures are omitted for clarity and conciseness.

[0027] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0028] As Figures 1-3 shown in a specific embodiment of a bottom-sitting swing ocean current power generation device, including: At least two swing oscillators 2 are arranged in the water flow direction, with an anti-biofouling coating on the surface, fixed to the oscillator mounting disc 3 at the bottom, and connected and fixed to the oscillator locking disc 1 at the top. Specifically, the swing oscillator 2 is the core component that can capture the kinetic energy of ocean currents and generates a swing motion.

[0029] There are 2 - 4 swing guide rods 9, which are arranged under the oscillator mounting disc 3, and their bottoms are connected to the swing plate. The swing guide rods 9 transfer the swing energy of the swing oscillator 2 to the swing plate.

[0030] The vortex-induced drive device 4 is used to change the reciprocating motion of the swing plate 10 into a unidirectional continuous motion.

[0031] The central drive device 5 includes a waterproof protective shell two, a generator 18, a central drive shaft 17, and a rotatable mounting seat 23. The generator 18 is arranged in the rotatable mounting seat 23, and the output end of the central drive shaft 17 is rotationally connected to the generator 18.

[0032] The cylindrical foundation 7 is connected and fixed to the bottom of the central drive device 5 at the top, with a cylindrical foundation cavity 8 inside. A plurality of water and gas charging and discharging valves 6 are arranged at the top of the cylindrical foundation 7, and it sinks by injecting seawater to discharge air, or forms a negative pressure to adsorb the seabed by discharging seawater.

[0033] Specifically, the swing structure (swing guide rod 9 and spring layer 19) limits the vibration amplitude, avoids damage to the equipment caused by excessive vibration, and provides stable torque support through the spring layer 19, ensuring the continuous power generation capacity of the generator 18.

[0034] Specifically, the vortex-induced transmission device 4 includes a waterproof protective shell, a swing plate 10, a sun gear 20, a sun gear shaft 21, a planetary gear 11, a ratchet one 12, a ratchet two 13, a transmission gear 14, a pawl one 15, a pawl two 16 and a central transmission shaft 17. The swing plate 10, the sun gear 20, the sun gear shaft 21, the planetary gear 11, the ratchet one 12, the ratchet two 13, the transmission gear 14, the pawl one 15, the pawl two 16 and the central transmission shaft 17 are all arranged inside the waterproof protective shell. An annular gear ring is provided inside the swing plate 10. The number of the planetary gears 11 is multiple, and they are all meshed with the annular gear ring inside the swing plate 10. The sun gear 20 is located in the middle of the multiple planetary gears 11 and is meshed with the planetary gears 11. A transmission disc 22 is fixedly installed on the upper part of the ratchet one 12. The sun gear shaft is fixed in the middle of the transmission disc 22 on the upper part of the ratchet one 12 to control the rotation of the ratchet one 12. The bottom of the central transmission shaft 17 is connected to the output shaft of the generator 18, and the top is not connected to the bottom of the transmission disc 22. The pawl one 15 and the pawl two 16 are fixedly installed on the central transmission shaft 17. A transmission gear 14 is meshed between the ratchet one 12 and the ratchet two 13. The bottom of the ratchet two 13 is installed on the surface of the rotatable mounting seat 23.

[0035] Specifically, annular gear rings are provided on the lower part of the ratchet one 12 and the upper part of the ratchet two 13 to mesh with the transmission gear 14.

[0036] Specifically, annular gear rings are provided inside the ratchet one 12 and the ratchet two 13. The pawl one 15 will mesh with the ratchet one when the ratchet one 12 rotates forward, and when the ratchet one 12 rotates backward, the pawl one 15 will not mesh with the ratchet one 12. The pawl two 16 will mesh with the ratchet two 13 when the ratchet two 13 rotates forward, and when the ratchet two 13 rotates backward, the pawl two 16 will not mesh with the ratchet two 13. (The structure of the pawl and the ratchet here is a mature existing technology. Refer to the ratchet structure in a bicycle freewheel, and it will not be elaborated here).

[0037] Specifically, the bottom-mounted swing ocean current power generation device captures the kinetic energy of water flow through the swing oscillator 2 and converts it into electrical energy through a multi-stage transmission system. It includes: the swing oscillator 2 arranged along the water flow drives the swing plate 10 with an annular gear ring through the swing guide rod 9.

[0038] When rotating forward, the internal annular gear ring of the swing plate 10 drives the planetary gear 11 to rotate. The planetary gear 11 drives the sun gear 20 to rotate. The rotation of the sun gear 20 drives the rotation of the sun gear shaft 21. The rotation of the sun gear shaft 21 drives the rotation of the transmission disc 22, thereby driving the first ratchet 12 to rotate forward. When the first ratchet 12 rotates forward, the transmission gear 14 transmits power to the second ratchet 13 in a reverse rotation. The first pawl 15 meshes with the first ratchet 12. The forward rotation of the first ratchet 12 drives the first pawl 15 to drive the central transmission shaft 17 to rotate. At this time, the second ratchet 13 is rotating in the reverse direction, and at this time, the second pawl 16 and the second ratchet 13 cannot mesh.

[0039] When rotating in the reverse direction, the first ratchet 12 rotates in the reverse direction. The transmission gear 14 transmits power to the second ratchet 13 in a forward rotation. When the first ratchet 12 rotates in the reverse direction, the first pawl 15 cannot mesh with it. The first pawl 15 continuously rebounds and cannot transmit power to the central transmission shaft 17. However, the second ratchet 13 rotates forward, and the second pawl 16 catches the second ratchet 13. The forward rotation of the second ratchet 13 drives the second pawl 16 to rotate and drives the central transmission shaft 17 to rotate.

[0040] Specifically, it further includes a spring layer 19, which is annularly arranged around the swing guide rod 9, provides a restoring force for the reciprocating motion, and provides an elastic reset torque when the oscillator swings to the limit position, restricting the vibration amplitude of the swing oscillator 2 (as Figure 3 shown), avoiding damage to the structure caused by excessive vibration, and providing technical support for large-scale application.

[0041] Specifically, it further includes an energy storage charge and discharge battery pack, which is connected to the generator 18 through a charging cable for storing electrical energy. The energy storage charge and discharge battery pack is also provided with an output cable, which provides a stable power supply for underwater equipment through the output cable.

[0042] In other preferred embodiments, the swing oscillator 2, the oscillator locking disc 1, and the oscillator mounting disc 3 are all made of stainless steel material or polymer material, where: The swing oscillator 2 has a diameter of 0.5 m and is made of stainless steel material to ensure excellent corrosion resistance and strength in the marine environment.

[0043] The swing plate 10 has a diameter of 3 m and is made of aluminum alloy material, which not only ensures strength but also reduces weight, improves buoyancy, and is convenient for transportation and sinking.

[0044] The cylindrical foundation 7 has a diameter of 4 m and is made of steel. The inside of the cylindrical foundation 7 is coated with epoxy resin to increase the ability to resist marine organism attachment and improve stability.

[0045] The generator 18 is a low-speed permanent magnet underwater generator, suitable for operating under low-speed rotation conditions, and can start and generate electricity when the sea current speed is relatively low. The electric energy output by the generator 18 is transmitted to the energy storage battery pack through the charging cable for storage, and provides a stable power supply for underwater equipment through the output cable.

[0046] Specifically, all key components are made of materials with strong corrosion resistance and suitable for the marine environment to ensure the long-term stable operation of the equipment. Finally, the design of the cylindrical foundation 7 facilitates the installation and maintenance of the device, and through simplified floating and sinking technologies, on-site installation can be easily achieved.

[0047] Specifically, it is expected that the device can stably output about 1 kW of electricity in a suitable sea current environment (current speed greater than 0.5 m / s) to meet the energy requirements of underwater equipment. Combined with the energy storage system, the device can still provide stable power support in the absence of continuous sea currents, especially suitable for applications such as equipment in the deep sea and offshore exploration that require continuous power sources. Overall, this implementation provides a reliable and sustainable sea current power generation technology with strong adaptability and engineering feasibility, and can provide a new solution for the efficient utilization of ocean energy.

[0048] In other preferred embodiments, as Figure 4 shown, the whole device adopts a modular design. All components are pre-installed in the factory and then towed to the target sea area by floating. The internal pressure of the cylindrical foundation 7 is adjusted through the water and gas charging and discharging valve 6 to achieve sinking and fixation.

[0049] Specifically, the adoption of a mature modular design reduces the manufacturing cost and maintenance cost, and at the same time improves the reliability and applicability of the device.

[0050] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0053] Those skilled in the art to which this application pertains may make various modifications or supplements to the specific embodiments described or use similar means for substitution, but will not deviate from the spirit of this application or exceed the scope defined by the appended claims.

Claims

1. A bottom-mounted swing ocean current power generation device, characterized in that: include: At least two oscillating oscillators are arranged along the water flow direction, the bottom of which is fixed on the oscillator mounting plate, and the top is connected and fixed through the oscillator upper locking plate; The number of the swing guide rods is 2 to 4, which are arranged at the lower part of the vibrator mounting plate, and the bottom of the rods is connected to the swing plate; The vortex drive device is used to change the reciprocating motion of the wobble plate into a unidirectional continuous motion; The central transmission device comprises a second waterproof protective shell, a generator, a central transmission shaft and a rotatable mounting seat, wherein the generator is arranged in the rotatable mounting seat, and the central transmission shaft is rotatably connected to the output end of the generator; The top of the cylindrical foundation is connected and fixed to the bottom of the central transmission device, the interior is a cylindrical foundation cavity, and a plurality of water and gas charging and discharging valves are arranged on the top of the cylindrical foundation.

2. A bottom-mounted swing ocean current power generation device according to claim 1, characterized in that: The vortex-induced transmission device includes a waterproof protective shell, a swing plate, a sun gear, a sun gear shaft, a planetary gear, a ratchet wheel 1, a ratchet wheel 2, a transmission gear, a pawl 1, a pawl 2 and a central transmission shaft. The swing plate, the sun gear, the sun gear shaft, the planetary gear, the ratchet wheel 1, the ratchet wheel 2, the transmission gear, the pawl 1, the ratchet wheel 2 and the central transmission shaft are all arranged inside the waterproof protective shell. An annular gear ring is provided inside the swing plate. There are multiple planetary gears, all of which are meshed with the annular gear ring inside the swing plate; the sun gear is located in the middle of multiple planetary gears and meshes with the planetary gears; a transmission plate is fixedly installed on the upper part of the ratchet wheel 1, and the sun gear shaft is fixed to the middle part of the transmission plate on the upper part of the ratchet wheel 1 to control the rotation of the ratchet wheel 1; the pawl 1 and the pawl 2 are fixedly installed on the central transmission shaft, and a transmission gear is meshed between the ratchet wheel 1 and the ratchet wheel 2, and the bottom of the ratchet wheel 2 is installed on the surface of a rotatable mounting seat.

3. A bottom-mounted swing ocean current power generation device according to claim 2, characterized in that: Both ratchet wheel 1 and ratchet wheel 2 are provided with annular gear rings inside. Ratchet pawl 1 will mesh with ratchet wheel 1 when ratchet wheel 1 rotates forward, and will not mesh with ratchet wheel 1 when ratchet wheel 1 rotates reversely. Ratchet pawl 2 will mesh with ratchet wheel 2 when ratchet wheel 2 rotates forward, and will not mesh with ratchet wheel 2 when ratchet wheel 2 rotates reversely.

4. The bottom-mounted swing ocean current power generation device according to claim 1, characterized in that: It also includes a spring layer, which is annularly arranged around the swing guide rod to provide restoring force for the reciprocating motion.

5. The bottom-mounted swing ocean current power generation device according to claim 1, characterized in that: It also includes an energy storage charging and discharging battery pack, which is connected to the generator through a charging cable and is used to store electrical energy.

6. The bottom-mounted swing ocean current power generation device according to claim 1, characterized in that: The oscillating pendulum vibrator, the vibrator locking plate and the vibrator mounting plate are all made of stainless steel or polymer material.

7. The bottom-mounted swing ocean current power generation device according to claim 5, characterized in that: The diameter of the oscillator is 0.5m, the diameter of the oscillating plate is 3m, and the oscillating plate is made of aluminum alloy.

8. The bottom-mounted swing ocean current power generation device according to claim 1, characterized in that: The barrel foundation has a diameter of 4m, is made of steel, and is coated with epoxy resin inside.

9. The bottom-mounted swing ocean current power generation device according to claim 1, characterized in that: The generator is a low-speed permanent magnet underwater generator.

10. The bottom-mounted swing ocean current power generation device according to claim 1, characterized in that: The device adopts a modular design as a whole. All components are pre-installed in the factory and then floated and towed to the target sea area. The internal pressure of the cylindrical foundation is adjusted by water and gas filling and releasing valves to achieve sinking and fixation.

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