A sea snake type wave energy power generation device

Abstract

The present invention discloses a sea snake type wave energy power generation device, comprising at least three floating plates arranged in sequence along a first direction, wherein the relative rear ends of at least two floating plates located at the relative front ends along the first direction are concavely provided with grooves, a central axis is arranged in the groove, the relative front ends of the floating plates adjacent to the floating plates with grooves are convexly provided with convex parts, and the convex parts are rotatably connected to the central axis; the central axis is connected to a power generation assembly, and the power generation assembly is driven by the rotation of the central axis to generate electricity; a support assembly for floating in water is provided on the outer side wall of one end of the floating plate with the groove, each support assembly comprises two brackets, and the two brackets are arranged at intervals along the second direction; a vortex-induced vibration mechanism is provided between the two brackets of each support assembly, and the vortex-induced vibration mechanism is located below the central axis. The present invention can generate electricity continuously and stably in deep sea or areas with large waves, and can also generate electricity efficiently and stably in areas with small waves.

Description

Technical Field

[0001] The invention relates to the technical field of wave energy power generation, and in particular to a sea snake type wave energy power generation device. Background Art

[0002] Serpentine wave power generation is a technology that uses ocean wave energy to convert into electrical energy. Its principle is to convert the mechanical energy of waves into electrical energy. Compared with other renewable energy technologies, wave power generation technology is still in its early stages of development. Most of the existing wave power generation devices use the following two methods to generate electricity: the first is to use a floating platform that combines wind energy and serpentine wave power generation to generate electricity, but the connection between the wind turbine wind turbine and the serpentine wave power generation device in the floating platform makes the center of gravity of the entire platform unstable and can only be implemented in specific coastline areas; the second is to use an air-driven vibration power generation structure, but the air-driven vibration power generation mode has low power generation efficiency when the waves are small or there are no waves, and has a narrow scope of application.

[0003] It can be seen that most of the current wave energy power generation devices can only be implemented in specific coastline areas, and the power generation efficiency is low, which is not conducive to the promotion and use of serpentine wave energy power generation technology. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the wave energy power generation device can only be implemented in a specific coastline area and has a low power generation efficiency, which is not conducive to the promotion and use of snake-shaped wave energy power generation technology, thereby providing a sea snake-shaped wave energy power generation device.

[0005] A sea snake type wave energy power generation device provided according to the present invention comprises:

[0006] At least three floating plates are arranged in sequence along a first direction, wherein at least two of the floating plates located at relatively front ends along the first direction have grooves at their relatively rear ends, a central axis is arranged in the grooves, and the floating plates adjacent to the floating plates with the grooves have convex portions at their relatively front ends, and the convex portions are rotatably connected to the central axis;

[0007] A power generation assembly connected to the central shaft and driven by the central shaft to generate electricity;

[0008] A support assembly is arranged on the outer side wall of one end of the floating plate with the groove and is used to float in water, each of the support assemblies includes two brackets, and the two brackets are arranged at intervals along the second direction;

[0009] The vortex-induced vibration mechanisms are arranged one by one on the support assembly, and each of the vortex-induced vibration mechanisms includes a first vibration bar and a second vibration bar connected between two of the brackets, and the second vibration bar is located directly below the first vibration bar in the vertical direction.

[0010] A sea snake type wave energy power generation device according to the present invention has at least the following technical effects:

[0011] By rotating the convex part of the floating plate to connect it to the central axis of the groove of the adjacent floating plate, relative rotation can be generated between the floating plates, and the power generation component is connected to the central axis, and generates electricity under the rotation drive of the central axis; when waves come, the relative rotation between the floating plates makes the sea snake type wave energy power generation device move on the sea surface like a sea snake, and such a flexible structure is sufficient to cope with various complex situations on the sea surface. At the same time, the floating plate with the groove can rotate relative to the floating plate located on its adjacent rear side, so that the rotation of the central axis drives the power generation component to generate electricity; therefore, the sea snake type wave energy power generation device can generate electricity continuously and stably in deep sea or areas with large waves, and continuously output electricity. Two brackets are relatively arranged along the second direction on the outer side wall of the rear end of the floating plate with the groove, and a first vibration rod and a second vibration rod are arranged between the two brackets along the vertical interval. When the seawater flow impacts the first vibration rod and the second vibration rod, vortex-induced vibration phenomenon is generated, and the kinetic energy of the seawater along the first direction is converted into kinetic energy along the vertical vibration, thereby realizing energy conversion and utilization, increasing the rotation angle between the floating plates, and improving the power generation efficiency. Therefore, the sea snake type wave energy power generation device can generate electricity continuously and stably in the deep sea or areas with large waves, and can also generate electricity efficiently and stably in areas with small waves, which is conducive to the promotion and use of snake wave energy power generation technology.

[0012] Preferably, the first vibration bar is vertically slidably disposed between the two brackets, and is driven to rise and fall by a lifting assembly.

[0013] Preferably, the lifting assembly includes at least one screw, which is vertically arranged on one of the brackets and has a driving member at one end for driving the screw to rotate. A nut seat is arranged on the screw, and the first vibration rod is arranged on the screw.

[0014] Preferably, guide rails are provided on the side surfaces of the two brackets facing each other, and the first vibration bar is vertically slidably connected between the two guide rails.

[0015] Preferably, each of the power generation components comprises a generator, and the rotating shaft of the generator is connected to the corresponding central shaft through a gear transmission assembly.

[0016] Preferably, the gear transmission assembly comprises a first gear and a second gear meshing with each other, the first gear has more teeth than the second gear, the first gear is arranged on the central shaft, and the second gear is arranged on the rotating shaft of the generator.

[0017] Preferably, the gear transmission assembly also includes a third gear and a fourth gear coaxially connected, the number of teeth of the third gear is less than the number of teeth of the fourth gear, the third gear is meshed with the first gear, the number of teeth of the third gear is less than the number of teeth of the first gear, and the fourth gear is meshed with the second gear, the number of teeth of the fourth gear is more than the number of teeth of the second gear.

[0018] Preferably, a one-way bearing is provided between the central shaft and the first gear.

[0019] Preferably, a counterweight block is provided inside the floating plate with the protrusion, and the counterweight block is used to position the center of gravity of the floating plate with the protrusion relatively in front of the central axis.

[0020] Preferably, the water-facing surface of the first vibrating rod along the first direction is set as a first arc surface;

[0021] And / or, the water-facing surface of the second vibrating rod along the first direction is set to be a second arc surface.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the structure of a sea snake type wave energy power generation device of this embodiment with the front and rear floating plates removed;

[0025] Figure 2 for Figure 1 A perspective structural diagram of

[0026] Figure 3 It is a schematic structural diagram of a power generation component in a sea snake type wave energy power generation device of this embodiment;

[0027] Figure 4It is a structural schematic diagram of the assembly of the vortex-induced vibration mechanism and the support assembly in a sea snake type wave energy power generation device of this embodiment.

[0028] Description of reference numerals:

[0029] 1-floating plate, 11-groove, 12-central axis, 13-convex part;

[0030] 2-power generation assembly, 21-generator, 22-first gear, 23-second gear, 24-third gear, 25-fourth gear, 26-one-way bearing;

[0031] 31- bracket;

[0032] 41 - first vibration rod, 411 - first arc surface, 42 - second vibration rod, 421 - second arc surface; 51 - lead screw, 52 - driving member, 53 - nut seat. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] like Figure 1 , Figure 2 and Figure 4 The present embodiment shows a sea snake type wave energy power generation device, comprising at least three floating plates 1 arranged in sequence along a first direction, preferably seven floating plates 1, wherein the six floating plates 1 located at the relatively front ends along the first direction are provided with grooves 11 at the relatively rear ends, and a central axis 12 is provided in each of the grooves 11; the six floating plates 1 located at the relatively rear ends along the first direction are provided with convex portions 13 at the relatively front sides, and the convex portions 13 are rotatably connected to the central axis 12 in the grooves 11 of the adjacent floating plates 1; each of the central axes 12 is connected to a power generation group Part 2, the power generation component 2 is driven by the central shaft 12 to generate electricity; a support component is provided on the outer wall of one end of the floating plate 1 with the groove 11, and the support component is used to float in the water, and each of the support components includes two brackets 31, and the two brackets 31 are arranged at intervals along the second direction; a vortex-induced vibration mechanism is provided on the support component, and each of the vortex-induced vibration mechanisms includes a first vibration rod 41 and a second vibration rod 42 connected between the two brackets 31, and the second vibration rod 42 is located directly below the first vibration rod 41 in the vertical direction. The first direction, the second direction and the vertical direction mentioned in this embodiment refer to Figure 1 The first direction, the second direction and the vertical direction.

[0038] The sea snake type wave energy power generation device of the present embodiment is connected by rotating the protrusion 13 of the floating plate 1 to the central axis 12 of the groove 11 of the adjacent floating plate 1, so that relative rotation can be generated between the floating plates 1 and the floating plates 1, and the power generation component 2 is connected to the central axis 12 and generates electricity under the rotation drive of the central axis 12; when the waves come, the relative rotation between the floating plates 1 and the floating plates 1 makes the sea snake type wave energy power generation device of the present embodiment move in a winding way on the sea surface like a sea snake, and such a flexible structure is sufficient to cope with various complex situations on the sea surface, and at the same time, the floating plate 1 with the groove 11 can rotate relative to the floating plate 1 located on its adjacent rear side, so that the central axis 12 rotates to drive the power generation component 2 to generate electricity; therefore, the sea snake type wave energy power generation device of the present embodiment can generate electricity continuously and stably in the deep sea or in areas with large waves, and continuously output electricity. Two brackets 31 are relatively arranged along the second direction on the outer side wall of the rear end of the floating plate 1 with the groove 11, and a first vibration rod 41 and a second vibration rod 42 are arranged between the two brackets 31 along the vertical interval. When the seawater flow impacts the first vibration rod 41 and the second vibration rod 42, vortex-induced vibration is generated, and the kinetic energy of the seawater along the first direction is converted into kinetic energy along the vertical vibration, thereby realizing energy conversion and utilization, and increasing the rotation angle between the floating plates 1 to improve the power generation efficiency. Therefore, it can also generate electricity efficiently and stably in areas with smaller waves, which is conducive to the promotion and use of snake-shaped wave energy power generation technology. The sea snake type wave energy power generation device of this embodiment can generate electricity continuously and stably in deep sea or areas with larger waves.

[0039] It should be noted that the sea waves flow from the rear end to the front end along the first direction.

[0040] The floating plates 1 in the sea snake type wave energy power generation device of this embodiment can be relatively rotated only through the central axis 12, which has a simple structure and little mechanical damage, thereby extending the service life of the sea snake type wave energy power generation device of this embodiment.

[0041] The vortex-induced vibration mechanism in the sea snake type wave energy power generation device of this embodiment is composed of a first vibration rod 41 and a second vibration rod 42. Compared with the existing complex mechanical vibration system, the structure of the vortex-induced vibration mechanism is relatively simple and easy to manufacture, install and maintain.

[0042] In specific applications, the number of the floating plates 1 is reasonably increased or decreased according to the actual arrangement length. For example, in other embodiments, the number of the floating plates 1 is three, four, five, six, ten, eleven or other numbers.

[0043] It should be noted that the sea snake type wave energy power generation device of this embodiment is anchored to the seabed by an anchor chain, and the location can be at sea 2 to 3 kilometers away from the coast, above the sea level or about 30 meters deep in shallow sea water near the sea level.

[0044] like Figure 4 As shown, in some embodiments of the present invention, the first vibration bar 41 is vertically slidably arranged between the two brackets 31, and is driven to rise and fall by the lifting assembly. By sliding the first vibration bar 41 vertically between the two brackets 31, and because the frequency and amplitude of the vortex-induced vibrations of the first vibration bar 41 and the second vibration bar 42 at different vertical spacings are different, the first vibration bar 41 can be adjusted to move vertically relative to the second vibration bar 42 by the lifting assembly according to different sea conditions (frequency and amplitude of waves), so that the frequency of the vortex-induced vibrations of the first vibration bar 41 and the second vibration bar 42 is consistent with the wave frequency, thereby increasing the rotation angle between the floating plates 1 and improving the power generation efficiency; achieving continuous and stable power generation in deep sea or areas with large waves, and efficient and stable power generation in areas with small waves, which is conducive to the promotion and use of serpentine wave energy power generation technology.

[0045] like Figure 4 As shown, in some embodiments of the present invention, the lifting assembly includes at least one lead screw 51, the lead screw 51 is vertically arranged on one of the brackets 31, and a driving member 52 for driving the lead screw 51 to rotate is arranged at one end, a nut seat 53 is arranged on the lead screw 51, and the first vibrating rod 41 is arranged on the lead screw 51. When the vertical spacing between the first vibrating rod 41 and the second vibrating rod 42 needs to be adjusted according to different sea conditions, the lead screw 51 is driven to rotate forward or reversely by the driving member 52, thereby driving the first vibrating rod 41 to rise and fall vertically, and the adjustment operation is simple; specifically, the driving member 52 is set as a rotating part, so that the operator can hold and drive the lead screw 51 to rotate, especially compared with using a motor as the driving member 52, it is more convenient to adjust the height position of the first vibrating rod 41 in the field.

[0046] In some embodiments of the present invention, the two sides of the two brackets 31 facing each other are provided with guide rails, and the first vibration rod 41 is vertically slidably connected between the two guide rails. The two guide rails guide the first vibration rod 41 on both sides along the second direction, so that each position of the first vibration rod 41 along the second direction is smoothly raised and lowered by the same amount under the drive of the lead screw 51, thereby more accurately adjusting the vertical spacing between the first vibration rod 41 and the second vibration rod 42, ensuring that the frequency of the vortex-induced vibration generated by the first vibration rod 41 and the second vibration rod 42 is consistent with the wave frequency of the actual sea area, thereby increasing the rotation angle between the floating plates 1 and improving the power generation efficiency. Specifically, the lead screw 51 and the guide rail are integrally arranged to form a lead screw guide rail structure.

[0047] like Figure 1 and Figure 3As shown, in some embodiments of the present invention, each of the power generation components 2 includes a generator 21, and the rotating shaft of the generator 21 is connected to the corresponding central shaft 12 through a gear transmission component. The rotating shaft of the generator 21 is connected to the central shaft 12 through the gear transmission component. When the waves come, the floating board 1 with the groove 11 can rotate relative to the floating board 1 located at the adjacent rear side, so that the central shaft 12 rotates and drives the rotating shaft of the generator 21 to rotate through the gear transmission component to generate electricity.

[0048] like Figure 3 As shown, in some embodiments of the present invention, the gear transmission assembly includes a first gear 22 and a second gear 23 that are meshed with each other, the first gear 22 has more teeth than the second gear 23, the first gear 22 is disposed on the central shaft 12, and the second gear 23 is disposed on the rotating shaft of the generator 21. Because the transmission ratio of the first gear 22 and the second gear 23 is less than 1, a smaller rotation angle of the central shaft 12 can drive the rotating shaft of the generator 21 to generate a larger rotation angle, thereby further improving the power generation efficiency.

[0049] like Figure 3 As shown, in some embodiments of the present invention, the gear transmission assembly further includes a third gear 24 and a fourth gear 25 connected coaxially, the number of teeth of the third gear 24 is less than the number of teeth of the fourth gear 25, the third gear 24 is meshed with the first gear 22, the number of teeth of the third gear 24 is less than the number of teeth of the first gear 22, and the fourth gear 25 is meshed with the second gear 23, the number of teeth of the fourth gear 25 is more than the number of teeth of the second gear 23. By adding the third gear 24 and the fourth gear 25 between the first gear 22 and the second gear 23, and because the number of teeth of the first gear of the two meshing gears is larger and the number of teeth of the second gear is smaller, a larger transmission ratio can be achieved, so that the central shaft 12 can produce a smaller rotation angle to drive the rotating shaft of the generator 21 to produce a larger rotation angle, further improving the power generation efficiency. At the same time, because the diameter of the first gear of the two meshing gears is larger and the meshing area is larger, the stress in the transmission will be relatively dispersed, and a more stable transmission can be provided, which can reduce the vibration and noise level, making the mechanical system in the application more stable and reliable. It can be understood that the previous gear of the two gears meshing with each other refers to the driving tooth of the two gears meshing with each other, that is, the first gear 22 or the fourth gear 25 .

[0050] like Figure 3As shown, in some embodiments of the present invention, a one-way bearing 26 is provided between the central shaft 12 and the first gear 22. The one-way bearing 26 can effectively bear the axial load and transmit the force in one direction, while there is almost no transmission force in the opposite direction. Therefore, when the floating plate 1 and the floating plate 1 generate relative rotational motion on the sea surface, the rotation in one direction will drive the generator 21 to work, and the rotation in the other direction will idle, which is conducive to the rapid return of the floating plate 1 so that the floating plate 1 can continue to work. Moreover, the one-way bearing 26 only allows axial rotation in one direction, which reduces friction and energy loss and further improves the power generation efficiency. It can be understood that when the one-way bearing 26 is in the specified direction, the central shaft 12 is connected to the first gear 22 to realize the transmission of torque. If the central shaft 12 rotates in the opposite direction, the one-way bearing 26 will not affect the rotation of the central shaft 12, but will no longer continue to transmit the torque to the first gear 22.

[0051] In some embodiments of the present invention, a counterweight is provided inside the floating plate 1 with the protrusion 13, and the counterweight is used to locate the center of gravity of the floating plate 1 with the protrusion 13 relatively in front of the central axis 12. Because the center of gravity of the floating plate 1 is located relatively in front of the connection position between the central axis 12 and the groove 11, the floating plate 1 will quickly return to its original position under the action of its own weight, ensuring that the floating plate 1 can continue to work.

[0052] like Figure 4 As shown, in some embodiments of the present invention, the water-facing surface of the first vibration bar 41 along the first direction is set to a first arc surface 411. Through the transition of the first arc surface 411, the loss of kinetic energy of the waves is reduced, and the vortex-induced vibration phenomenon is better generated on the first vibration bar 41 and the second vibration bar 42, further improving the power generation efficiency. It should be noted that the water-facing surface of the first vibration bar 41 refers to the surface on which the flowing seawater acts on the first vibration bar 41.

[0053] like Figure 4 As shown, in some embodiments of the present invention, the water-facing surface of the second vibration bar 42 along the first direction is set to a second arc surface 421. Through the transition of the second arc surface 421, the loss of kinetic energy of the waves is reduced, and the vortex-induced vibration phenomenon is better generated on the first vibration bar 41 and the second vibration bar 42, further improving the power generation efficiency. It should be noted that the water-facing surface of the second vibration bar 42 refers to the surface on which the flowing seawater acts on the second vibration bar 42.

[0054] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A sea snake type wave energy power generation device, characterized in that: include: At least three floating plates (1) are arranged in sequence along a first direction, wherein at least two of the floating plates (1) located at relatively front ends along the first direction have grooves (11) at their relatively rear ends, a central axis (12) is arranged in the grooves (11), and the floating plates (1) adjacent to the floating plates (1) with the grooves (11) have convex portions (13) at their relatively front ends, and the convex portions (13) are rotatably connected to the central axis (12); A power generation assembly (2) connected to the central shaft (12) and driven by the central shaft (12) to generate electricity; A support assembly, arranged on the outer side wall of one end of the floating plate (1) having the groove (11), and used for floating in water, each of the support assemblies comprising two brackets (31), the two brackets (31) being arranged at intervals along the second direction; Vortex-induced vibration mechanisms are arranged one by one on the support assembly, each of the vortex-induced vibration mechanisms comprises a first vibration bar (41) and a second vibration bar (42) connected between two of the brackets (31), and the second vibration bar (42) is located directly below the first vibration bar (41) in the vertical direction; The first vibration bar (41) is vertically slidably disposed between the two brackets (31) and is driven to rise and fall by a lifting assembly.

2. A sea snake type wave energy power generation device according to claim 1, characterized in that: The lifting assembly comprises at least one lead screw (51), the lead screw (51) being vertically arranged on one of the brackets (31), and having one end provided with a driving member (52) for driving the lead screw (51) to rotate, a nut seat (53) being arranged on the lead screw (51), and the first vibration rod (41) being arranged on the lead screw (51).

3. A sea snake type wave energy power generation device according to claim 2, characterized in that: A guide rail is provided on the side surfaces of the two brackets (31) facing each other, and the first vibration bar (41) is vertically slidably connected between the two guide rails.

4. A sea snake type wave energy power generation device according to claim 1, characterized in that: Each of the power generation components (2) comprises a generator (21), and the rotating shaft of the generator (21) is connected to the corresponding central shaft (12) via a gear transmission component.

5. A sea snake type wave energy power generation device according to claim 4, characterized in that: The gear transmission assembly comprises a first gear (22) and a second gear (23) meshing with each other, the number of teeth of the first gear (22) is greater than the number of teeth of the second gear (23), the first gear (22) is arranged on the central shaft (12), and the second gear (23) is arranged on the rotating shaft of the generator (21).

6. A sea snake type wave energy power generation device according to claim 5, characterized in that: The gear transmission assembly further comprises a third gear (24) and a fourth gear (25) which are coaxially connected, the number of teeth of the third gear (24) being less than the number of teeth of the fourth gear (25), the third gear (24) being meshed with the first gear (22), the number of teeth of the third gear (24) being less than the number of teeth of the first gear (22), the fourth gear (25) being meshed with the second gear (23), the number of teeth of the fourth gear (25) being greater than the number of teeth of the second gear (23).

7. A sea snake type wave energy power generation device according to claim 5 or 6, characterized in that: A one-way bearing (26) is provided between the central shaft (12) and the first gear (22).

8. The sea snake type wave energy power generation device according to claim 1, characterized in that: A counterweight block is arranged inside the floating plate (1) with the protrusion (13), and the counterweight block is used to position the center of gravity of the floating plate (1) with the protrusion (13) relatively in front of the central axis (12).

9. A sea snake type wave energy power generation device according to claim 1, characterized in that: The water-facing surface of the first vibration bar (41) along the first direction is configured as a first arc surface (411); And / or, the water-facing surface of the second vibration bar (42) along the first direction is configured as a second arc surface (421).

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