A magnetic liquid-sealed oscillating water column wave energy power generation device

Abstract

This invention belongs to the field of wave energy generation technology and discloses a magnetic liquid-sealed oscillating water column wave energy generation device. It utilizes air pressure to convert wave undulations into the movement of power generation components, avoiding energy loss caused by traditional mechanical transmission structures and improving the power conversion efficiency of the device. A magnetic liquid sliding seal is established between the first magnetic structure and the first outer shell. The magnetic liquid is attracted to the first magnetic component by magnetic force, preventing leakage and reducing the friction coefficient between the first magnetic structure and the first outer shell, thus lowering movement resistance. This allows for relative movement between the first magnetic structure and the first outer shell even under weak wave conditions, converting wave energy into electrical energy, improving conversion efficiency, and reducing wear between the first magnetic structure and the first outer shell, thereby extending the service life of the power generation device.

Description

Technical Field

[0001] This invention relates to the field of wave energy generation technology, and in particular to a magnetic liquid sealed oscillating water column wave energy generation device. Background Technology

[0002] Widely distributed marine sensors are fundamental to ocean monitoring and play a crucial role in developing smart ocean technologies. However, a key bottleneck restricting the development of various marine sensors is the supply of electricity. The ever-changing waves of the ocean contain abundant energy, making wave energy a promising clean and renewable energy source that has attracted considerable attention. Given the widespread distribution and vast reserves of wave energy, fully utilizing it for efficient and reliable wave power generation is of great significance.

[0003] In existing technologies, wave energy is typically converted into mechanical energy. A floating plate on the water surface drives the relative movement of a magnet and an induction coil within the power generation device via mechanical transmission. According to the law of electromagnetic induction, the induction coil cuts magnetic field lines, converting wave energy into electrical energy for output. Existing solutions offer advantages such as high power generation efficiency, high durability, and long service life at high frequencies. However, for low-frequency, random energy sources like wave energy, the harvesting efficiency is lower, and the process is costly and difficult to install and maintain.

[0004] Therefore, there is an urgent need for a magnetic liquid-sealed oscillating water column wave energy generation device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a magnetic liquid-sealed oscillating water column wave energy power generation device that can convert wave energy into electrical energy using air pressure, without the need for mechanical transmission, thereby improving power generation efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A magnetic liquid-sealed oscillating water column wave energy generation device is provided, comprising:

[0008] A power generation component includes a first housing, a first magnetic structure, and a coil. The first housing is provided with a first pipe. The first magnetic structure includes a first magnetic element and a magnetic liquid. The magnetic liquid is adsorbed onto the surface of the first magnetic element and is sealed and filled between the first magnetic element and the inner wall of the first pipe. The first magnetic structure is slidably disposed in the first pipe. The coil is wound on the first housing.

[0009] A drive assembly includes a second housing that is sealed to a first housing. The second housing is provided with a second pipe, one end of which is connected to the first pipe, and the other end of which is open to allow waves to enter.

[0010] As an optional solution for a magnetic liquid-sealed oscillating water column wave energy generation device, the driving assembly further includes an isolator, a second magnetic structure, and a support. The isolator is fixed between the first outer shell and the second outer shell, and the isolator is provided with a through hole that connects the first pipe and the second pipe. The second magnetic structure is slidably disposed in the second pipe and is repelled by the first magnetic structure. The support is located on the side of the second magnetic structure away from the first magnetic structure and is fixed to the second pipe. The support drives the second magnetic structure to move toward the isolator, and the second magnetic structure can close the through hole.

[0011] As an alternative to the magnetic liquid sealed oscillating water column wave energy power generation device, the through hole is configured as a tapered hole, and the diameter of the tapered hole gradually decreases from the second pipe towards the first pipe.

[0012] As an alternative to the magnetic liquid-sealed oscillating water column wave energy power generation device, the second magnetic structure includes a closure and a second magnetic component. The second magnetic component is connected to the closure, and the closure matches the through hole. The closure can extend into and close the through hole.

[0013] As an alternative to the magnetic liquid-sealed oscillating water column wave energy power generation device, the second magnetic structure further includes a rolling element, which is connected to the periphery of the closure and abuts against the inner wall of the second pipe.

[0014] As an alternative to a magnetic liquid-sealed oscillating water column wave energy generation device, the support component is configured as a third magnetic component or a spring.

[0015] As an alternative to the magnetic liquid-sealed oscillating water column wave energy generation device, a reset component is also included, which is sealed and connected to the end of the first housing away from the drive component.

[0016] As an alternative solution for a magnetic liquid-sealed oscillating water column wave energy generation device, the reset assembly includes a third housing, a pressure chamber is provided inside the third housing, the third housing is sealed to the first housing, and the pressure chamber is connected to the first pipe.

[0017] As an alternative to a magnetic liquid-sealed oscillating water column wave energy generation device, the third outer shell is a flexible component.

[0018] As an alternative to the magnetic liquid-sealed oscillating water column wave energy generation device, the reset assembly further includes a pressure element that drives the first magnetic structure to move away from the reset assembly.

[0019] The beneficial effects of this invention are:

[0020] This magnetic liquid-sealed oscillating water column wave energy power generation device utilizes air pressure to convert wave undulations into the movement of power generation components, avoiding energy losses caused by traditional mechanical transmission structures and improving the power conversion efficiency of the device. A magnetic liquid sliding seal is established between the first magnetic structure and the first outer shell. The magnetic liquid is attracted to the first magnetic component by magnetic force, preventing leakage and reducing the coefficient of friction between the first magnetic structure and the first outer shell, thus lowering movement resistance. This allows for relative movement between the first magnetic structure and the first outer shell even under weak wave conditions, converting wave energy into electrical energy, improving conversion efficiency, and reducing wear between the first magnetic structure and the first outer shell, thereby extending the service life of the power generation device.

[0021] In this magnetic liquid sealed oscillating water column wave energy power generation device, the drive component can seal the second pipe under conditions of large waves, isolate the first pipe and the second pipe, prevent water from entering the first pipe, keep the first pipe clean, avoid contamination of the magnetic liquid, and improve the service life of the power generation device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the magnetic liquid-sealed oscillating water column wave energy generation device provided by the present invention;

[0023] Figure 2 This is a schematic diagram of the drive component of the magnetic liquid sealed oscillating water column wave energy generation device provided by the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the sealing component of the magnetic liquid-sealed oscillating water column wave energy generation device provided by the present invention;

[0025] Figure 4 This is a schematic diagram of the reset component of the magnetic liquid-sealed oscillating water column wave energy power generation device provided by the present invention.

[0026] In the picture:

[0027] 100. Power generation component; 110. First housing; 111. First conduit; 120. First magnetic structure; 121. First magnetic component; 1211. Magnetic yoke; 1212. Magnet; 122. Magnetic fluid; 130. Coil;

[0028] 200. Drive assembly; 210. Second housing; 211. Second pipe; 212. First stepped structure; 213. Second stepped structure; 2131. Third mounting groove; 214. First flange structure; 220. Isolator; 221. Through hole; 230. Second magnetic structure; 231. Sealing element; 2311. First mounting groove; 2312. Protrusion; 2313. Second mounting groove; 2314. Vent groove; 232. Second magnetic element; 233. Rolling element; 240. Support element; 250. First sealing ring;

[0029] 300. Reset assembly; 310. Third housing; 311. Pressure chamber; 312. Third stepped structure; 313. Second flange structure; 320. Pressure component; 330. Second sealing ring;

[0030] 400. Connector; 410. End bolt; 420. Nut. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0032] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0035] like Figures 1 to 4 As shown, the magnetic liquid-sealed oscillating water column wave energy generation device of this embodiment includes a power generation component 100 and a drive component 200. The power generation component 100 includes a first outer shell 110, a first magnetic structure 120, and a coil 130. The first outer shell 110 is provided with a first pipe 111. The first magnetic structure 120 includes a first magnetic element 121 and a magnetic liquid 122. The magnetic liquid 122 is adsorbed onto the outer surface of the first magnetic element 121 and is sealed and filled between the first magnetic element 121 and the inner wall of the first pipe 111. The first magnetic structure 120 is slidably disposed in the first pipe 111. The coil 130 is wound around the first outer shell 110, wherein the coil 130 can be configured as multiple sets of wires wound in different directions. The drive component 200 includes a second outer shell 210, which is sealed to the first outer shell 110. The second outer shell 210 is provided with a second pipe 211, one end of which is connected to the first pipe 111, and the other end of which can be used to allow waves to enter.

[0036] Based on the above design, in the magnetic liquid-sealed oscillating water column wave energy generation device of this embodiment, a sealed space is formed between the first magnetic structure 120, the first outer shell 110, the second outer shell 210, and the wave. When the wave rises, the air volume in the sealed space decreases and the air pressure increases, thereby pushing the first magnetic structure 120 upward. When the wave descends, the air volume in the sealed space increases and the air pressure decreases, causing the first magnetic structure 120 to move downward. The coil 130 is wound around the first outer shell 110. When the first magnetic structure 120 moves up and down, the first magnetic structure 120 and the coil 130 move relative to each other. According to the law of electromagnetic induction, the coil 130 cuts the magnetic field lines to generate current, thereby realizing the generation of power using wave energy.

[0037] Understandably, this magnetic liquid-sealed oscillating water column wave energy power generation device utilizes air pressure to convert wave undulations into the movement of the power generation component 100, avoiding energy loss caused by traditional mechanical transmission structures and improving the power conversion efficiency of the device. The first magnetic structure 120 and the first outer shell 110 are slidably sealed by a magnetic liquid 122. The magnetic liquid 122 is attracted to the first magnetic component 121 by magnetic attraction, preventing leakage of the magnetic liquid 122 and reducing the coefficient of friction between the first magnetic structure 120 and the first outer shell 110, thus reducing movement resistance. This allows for relative movement between the first magnetic structure 120 and the first outer shell 110 even under weak wave conditions, thereby converting wave energy into electrical energy, improving power generation efficiency, and reducing wear between the first magnetic structure 120 and the first outer shell 110, thereby extending the service life of the power generation device.

[0038] Specifically, the first magnetic component 121 includes several yokes 1211 and multiple magnets 1212. The multiple magnets 1212 are spaced apart along the sliding direction of the first magnetic structure 120. Each yoke 1211 is connected between two adjacent magnets 1212, thereby enhancing the magnetic induction intensity and improving power generation efficiency. In this embodiment, two magnets 1212 are provided, which ensures power generation efficiency while preventing excessive gravity of the first magnetic component 121 from affecting the sliding. In some other embodiments, three, four, or other magnets 1212 may be provided.

[0039] Furthermore, the drive assembly 200 also includes an isolator 220, a second magnetic structure 230, and a support 240. The isolator 220 is fixed between the first housing 110 and the second housing 210, and the isolator 220 is provided with a through hole 221, which connects the first pipe 111 and the second pipe 211. The second magnetic structure 230 is slidably disposed within the second pipe 211, and the second magnetic structure 230 repels the first magnetic structure 120. The support 240 is located on the side of the second magnetic structure 230 away from the first magnetic structure 120 and is fixed to the second pipe 211. The support 240 drives the second magnetic structure 230 to move toward the isolator 220, and the second magnetic structure 230 can close the through hole 221.

[0040] The supporting force of the support member 240 on the second magnetic structure 230 is equal to the sum of the repulsive force of the first magnetic structure 120 on the second magnetic structure 230 and the weight of the second magnetic structure 230, thereby suspending the second magnetic structure 230 in the second pipe 211. When the wave height reaches a certain height, in order to prevent the wave from entering the first pipe 111 and contaminating the magnetic liquid 122, the first magnetic structure 120 rises, increasing the distance between the first magnetic structure 120 and the second magnetic structure 230. This reduces the repulsive force between the first magnetic structure 120 and the second magnetic structure 230, allowing the support member 240 to push the second magnetic structure 230 upward and close the through hole 221. This isolates the first pipe 111 and the second pipe 211, preventing waves from entering the first pipe 111, ensuring the cleanliness of the first pipe 111, preventing contamination of the magnetic liquid 122, and extending the service life of the power generation device. When the wave height decreases, the first magnetic structure 120 falls, pushing the second magnetic structure 230 away from the isolator 220, and the first pipe 111 and the second pipe 211 are restored to a connected state.

[0041] Specifically, a first step structure 212 is provided on the inner wall of the second pipe 211, the isolation member 220 abuts against the first step structure 212, the first outer shell 110 penetrates into the second pipe 211 and abuts against the isolation member 220, and a first sealing ring 250 is provided between the outer wall of the first outer shell 110 and the inner wall of the second pipe 211 to ensure the stability and sealing of the connection between the first outer shell 110 and the second outer shell 210.

[0042] Furthermore, the second magnetic structure 230 includes a closure 231 and a second magnetic element 232. The second magnetic element 232 is connected to the closure 231. The closure 231 matches the through hole 221, and the closure 231 can extend into and close the through hole 221, thereby ensuring the sealing effect between the second magnetic structure 230 and the isolator 220. In this embodiment, a first mounting groove 2311 is provided on the side of the closure 231 facing the support 240, and the second magnetic element 232 is installed in the first mounting groove 2311 to ensure the compactness and robustness of the second magnetic structure 230.

[0043] Optionally, the sealing member 231 is provided with a protrusion 2312, which passes through the through hole 221. Preferably, the through hole 221 is a tapered hole, the diameter of which gradually decreases from the second pipe 211 to the first pipe 111. The sealing member 231 is provided with a tapered protrusion 2312, the tapered surface of which can abut against the inner wall surface of the tapered hole, thereby improving the sealing effect of the isolation member 220 and the sealing member 231.

[0044] Furthermore, the second magnetic structure 230 also includes rolling elements 233, which are connected to the periphery of the closure 231 and abut against the inner wall of the second pipe 211. In this embodiment, the rolling elements 233 can reduce the friction between the second magnetic structure 230 and the inner wall of the second pipe 211. In this embodiment, multiple rolling elements 233 are provided, and the multiple rolling elements 233 are evenly distributed on the sidewall of the closure 231 to ensure that the second magnetic structure 230 can move stably.

[0045] Preferably, a plurality of second mounting grooves 2313 are provided on the side wall of the closure 231. The second mounting grooves 2313 are arranged radially along the closure 231, and a plurality of rolling elements 233 are installed in the second mounting grooves 2313 one by one to ensure the stability of the rolling elements 233.

[0046] Preferably, the side wall of the closure 231 is also provided with a plurality of ventilation grooves 2314, which extend along the axial direction of the closure 231 to enhance the flow of gas in the second pipe 211, thereby ensuring that the first magnetic structure 120 can respond quickly to the movement of waves and improve power generation efficiency.

[0047] Furthermore, a second step structure 213 is provided on the inner wall of the second pipe 211, and the support member 240 is disposed on the second step structure 213 to ensure the stability of the support member 240. Preferably, the second step structure 213 is provided with a third mounting groove 2131, and the support member 240 can be positioned in the third mounting groove 2131 to achieve the positioning of the support member 240.

[0048] In some embodiments, the support member 240 is configured as a third magnetic element that repels the second magnetic structure 230. In some other embodiments, the support member 240 may also be configured as a spring that is compressed between the second step structure 213 and the second magnetic structure 230 to ensure support for the second magnetic structure 230.

[0049] Furthermore, the magnetic liquid-sealed oscillating water column wave energy generation device also includes a reset assembly 300, which is sealed and connected to the end of the first housing 110 away from the drive assembly 200. The reset assembly 300 includes a third housing 310, which is sealed and connected to the first housing 110. A pressure chamber 311 is provided inside the third housing 310, and the pressure chamber 311 is connected to the first pipe 111. When the first magnetic structure 120 moves upward, i.e., towards the reset assembly 300, the air pressure inside the pressure chamber 311 increases. The gas inside the pressure chamber 311 can exert downward pressure on the first magnetic structure 120, which can both prevent the first magnetic structure 120 from moving out of the first pipe 111 when it moves upward and accelerate the reset speed of the first magnetic structure 120 when the wave decreases, thereby improving the power generation efficiency. In addition, the third housing 310 can also prevent external impurities from affecting the first magnetic structure 120, improving the performance and lifespan of the power generation device.

[0050] Specifically, the end of the first housing 110 away from the drive assembly 200 is inserted into the third housing 310. A second sealing ring 330 is provided between the outer wall of the first housing 110 and the inner wall of the third housing 310. A third step structure 312 is also provided on the inner wall of the third housing 310. The top of the first housing 110 abuts against the third step structure 312, thereby fixing and sealing the first housing 110 and the third housing 310.

[0051] Optionally, the third housing 310 can be configured as a flexible component. For example, the third housing 310 can be made of engineering plastic, rubber, silicone, etc., so that when the air pressure in the pressure chamber 311 changes, the third housing 310 can deform under the action of air pressure, preventing the air pressure in the third housing 310 from exerting excessive resistance on the first magnetic structure 120.

[0052] Furthermore, the reset assembly 300 also includes a pressure member 320, which drives the first magnetic structure 120 to move away from the reset assembly 300, further improving the reset efficiency of the first magnetic structure 120. In some embodiments, the pressure member 320 is configured as a spring, which is compressed between the first magnetic structure 120 and the third step structure 312. In some other embodiments, the pressure member 320 may also be configured as a fourth magnetic member, which repels the first magnetic structure.

[0053] In this embodiment, a first flange structure 214 is provided on the top of the second outer shell 210, and a second flange structure 313 is provided on the bottom of the third outer shell 310. The magnetic liquid-sealed oscillating water column wave energy power generation device also includes a connector 400, which is connected between the first flange structure 214 and the second flange structure 313. The coil 130 is disposed between the first flange structure 214 and the second flange structure 313, thereby realizing the overall installation of the magnetic liquid-sealed oscillating water column wave energy power generation device.

[0054] Optionally, the connector 400 includes a double-ended bolt 410 and a nut 420. The two ends of the double-ended bolt 410 pass through the first flange structure 214 and the second flange structure 313 respectively and are fixed to the two nuts 420. In this embodiment, multiple sets of connectors 400 are provided, and the multiple sets of connectors 400 are distributed around the periphery of the magnetic liquid sealed oscillating water column wave energy power generation device to ensure the structural strength of the assembly.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A magnetic liquid-sealed oscillating water column wave energy generation device, characterized in that, include: A power generation assembly (100) includes a first housing (110), a first magnetic structure (120), and a coil (130). The first housing (110) is provided with a first pipe (111). The first magnetic structure (120) includes a first magnetic element (121) and a magnetic liquid (122). The magnetic liquid (122) is adsorbed onto the surface of the first magnetic element (121) and the magnetic liquid (122) is sealed and filled between the first magnetic element (121) and the inner wall of the first pipe (111). The first magnetic structure (120) is slidably disposed in the first pipe (111). The coil (130) is wound around the first housing (110). A drive assembly (200) includes a second housing (210) that is sealed to a first housing (110). The second housing (210) is provided with a second pipe (211), one end of which is connected to the first pipe (111), and the other end of which can be used to allow waves to enter. The drive assembly (200) further includes an isolator (220), a second magnetic structure (230), and a support (240). The isolator (220) is fixed between the first housing (110) and the second housing (210). The isolator (220) is provided with a through hole (221), which connects the first pipe (111) and the second pipe (211). The second magnetic structure (230) is slidably disposed inside the second pipe (211). The second magnetic structure (230) is repelled by the first magnetic structure (120). The support member (240) is located on the side of the second magnetic structure (230) away from the first magnetic structure (120) and is fixed to the second pipe (211). The support member (240) drives the second magnetic structure (230) to move toward the isolation member (220). The second magnetic structure (230) can close the through hole (221). The second magnetic structure (230) includes a closure (231) and a second magnetic element (232). The side wall of the closure (231) is also provided with a plurality of ventilation grooves (2314), which extend along the axial direction of the closure (231).

2. The magnetic liquid-sealed oscillating water column wave energy generation device according to claim 1, characterized in that, The through hole (221) is configured as a tapered hole, and the diameter of the tapered hole gradually decreases from the second pipe (211) toward the first pipe (111).

3. The magnetic liquid-sealed oscillating water column wave energy generation device according to claim 1, characterized in that, The second magnetic element (232) is connected to the closure element (231), the closure element (231) is matched with the through hole (221), and the closure element (231) can extend into and close the through hole (221).

4. The magnetic liquid-sealed oscillating water column wave energy generation device according to claim 3, characterized in that, The second magnetic structure (230) further includes a rolling element (233), which is connected to the periphery of the closure (231) and abuts against the inner wall of the second pipe (211).

5. The magnetic liquid-sealed oscillating water column wave energy generation device according to claim 1, characterized in that, The support member (240) is configured as a third magnetic element or a spring.

6. The magnetic liquid-sealed oscillating water column wave energy generation device according to claim 1, characterized in that, The magnetic liquid-sealed oscillating water column wave energy generation device also includes a reset component (300), which is sealed to the end of the first housing (110) away from the drive component (200).

7. The magnetic liquid-sealed oscillating water column wave energy generation device according to claim 6, characterized in that, The reset assembly (300) includes a third housing (310), a pressure chamber (311) is provided inside the third housing (310), the third housing (310) is sealed to the first housing (110), and the pressure chamber (311) is connected to the first pipe (111).

8. The magnetic liquid-sealed oscillating water column wave energy generation device according to claim 7, characterized in that, The third outer shell (310) is a flexible component.

9. The magnetic liquid-sealed oscillating water column wave energy generation device according to claim 6, characterized in that, The reset assembly (300) further includes a pressure element (320) that drives the first magnetic structure (120) to move away from the reset assembly (300).

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