A tidal power device

Abstract

The utility model relates to a power generation technical field, more particularly, a tidal power generation device. The tidal power generation device includes: waterproof box, power generation subassembly, support, lifting rod, waterproof box, floats on the sea surface, and has sealed chamber;Power generation subassembly is located in sealed chamber, including upper substrate, lower substrate and the dielectric elastic film of fixed between both, the upper substrate is fixed in waterproof box inner top wall;The upper end of dielectric elastic film has an upper electrode, and the lower end has a lower electrode;Dielectric elastic film stress can take place elastic deformation, but the total volume is invariable;Support is fixed below the sea surface;The upper end of lifting rod is connected to lower substrate, and the lower end is connected to support, and lifting rod sliding connection is connected to waterproof box and can be opposite motion relative to waterproof box up and down. The tidal power generation device has the advantages of simple structure, small size, no noise, low cost.

Description

Technical Field

[0001] This utility model relates to the field of power generation technology, and more specifically, to a tidal power generation device. Background Technology

[0002] As people's living standards gradually improve, the demand for various energy sources is also increasing. On the one hand, traditional non-renewable fossil fuels are becoming increasingly depleted; on the other hand, the carbon dioxide produced by burning fossil fuels contributes to global warming, and the combustion products also cause significant environmental pollution. Ocean energy is characterized by its large resource volume and is typically used for hydroelectric power generation. However, due to its massive size and the high required flow velocity, its energy utilization rate is low, and its cost is high. Utility Model Content

[0003] The purpose of this utility model is to provide a tidal power generation device to solve at least one of the technical problems of ocean energy power generation equipment being large in size, requiring high flow velocity, having low energy utilization rate, and high cost.

[0004] The tidal power generation device provided by this utility model includes:

[0005] The waterproof tank floats on the sea surface and has a sealed chamber;

[0006] A power generation component, located within the sealed cavity, includes an upper substrate, a lower substrate, and a dielectric elastic film fixed between the two. The upper substrate is fixed to the inner top wall of the waterproof enclosure. The upper end of the dielectric elastic film has an upper electrode, and the lower end has a lower electrode. The dielectric elastic film can undergo elastic deformation under stress, but its overall volume remains unchanged.

[0007] The support structure is fixed below the seawater surface.

[0008] A lifting rod, the upper end of which is connected to the lower base plate and the lower end of which is connected to the bracket; the lifting rod is slidably connected to the waterproof box and can move up and down relative to the waterproof box.

[0009] Furthermore, the support includes a first support and a second support arranged at intervals, with a crankshaft pivotally connected between the first support and the second support, and the lower end of the lifting rod pivotally connected to the eccentric shaft section of the crankshaft.

[0010] Furthermore, a propeller is fixed to one end of the crankshaft, and the propeller has multiple blades.

[0011] Furthermore, the power generation component also includes an upper ring fixed to the upper substrate, and the dielectric elastic film is fixed to the upper ring.

[0012] Furthermore, the power generation component also includes a lower ring fixed to the lower end of the dielectric elastic film.

[0013] Furthermore, a waterproof sealing ring is provided at the sliding fit between the lifting rod and the waterproof housing.

[0014] Furthermore, the power generation component also includes a power source and an electrical output terminal. One end of the power source is electrically connected to the upper electrode, and the other end is electrically connected to the lower electrode. One end of the electrical output terminal is electrically connected to the upper electrode, and the other end is electrically connected to the lower electrode.

[0015] Furthermore, the dielectric elastic film has a frustum structure that is larger at the top and smaller at the bottom.

[0016] Furthermore, both the upper electrode and the lower electrode are flexible electrodes and are coated on the dielectric elastic film.

[0017] Furthermore, the power generation components are multiple and spaced apart.

[0018] The tidal power generation device provided by this utility model has the following beneficial effects:

[0019] In the tidal power generation device provided by this utility model, the support is fixed below the sea surface, and the waterproof tank floats on the sea surface. Because the dielectric elastic film can undergo elastic deformation without changing its overall volume, it will extend and expand in other directions after being compressed in one direction. During actual operation, the impact / slapping action of tidal energy on the waterproof tank drives the lifting rod to move relative to the waterproof tank vertically (approaching or moving away from each other). During this relative movement, the dielectric elastic film is compressed and stretched vertically. During compression, the thickness of the dielectric elastic film decreases, and its lateral dimension increases. During stretching, the thickness of the dielectric elastic film increases, and its lateral dimension increases. The size will decrease. According to the power generation principle of dielectric elastic film, when power is provided at both ends of the dielectric elastic film, the thickness of the dielectric elastic film increases during the thickness stretching process, and the lateral size will decrease. According to the principle of charge conservation, the same charge density of the upper and lower electrodes increases, which increases the voltage between the upper and lower electrodes at both ends of the dielectric elastic film and generates electrical energy. It has the advantages of simple structure, small size, no noise, and low cost. Furthermore, this tidal power generation device has no requirements on the water flow rate. Even small-amplitude / small-flow tides can force the dielectric elastic film to undergo compression / stretch deformation and be converted into electrical energy, which improves the energy utilization rate. That is, it can effectively utilize natural resources and has no environmental pollution. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the tidal power generation device in an embodiment of the present invention;

[0022] Figure 2 This is a first-view structural schematic diagram of the power generation component in an embodiment of the present invention;

[0023] Figure 3 This is a second-view structural diagram of the power generation component in an embodiment of the present invention;

[0024] Figure 4 This is a third-view structural diagram of the power generation component in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the dielectric elastic film being compressed and a low voltage source being input in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of a dielectric elastic film being stretched and outputting a high voltage in an embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram of the crankshaft in an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100-Waterproof enclosure;

[0030] 200 - Power generation components;

[0031] 210-upper base plate;

[0032] 220-lower base plate;

[0033] 230 - Dielectric elastic film;

[0034] 240 - Upper electrode;

[0035] 250 - Lower electrode;

[0036] 260 - Upper Ring;

[0037] 300-Standard;

[0038] 310 - First stent;

[0039] 320 - Second stent;

[0040] 330 - Crankshaft; 331 - Eccentric shaft section;

[0041] 400-Lifting boom;

[0042] 500-propeller. Detailed Implementation

[0043] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0044] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0045] This utility model embodiment provides a tidal power generation device, such as Figure 1 As shown, it includes: a waterproof housing 100, a power generation component 200, a support frame 300, and a lifting rod 400. The waterproof housing 100 floats on the sea surface and has a sealed chamber; the support frame 300 is fixed below the sea surface.

[0046] The power generation component 200 is located in a sealed chamber, such as Figures 2-4 As shown, the power generation component 200 includes an upper substrate 210, a lower substrate 220, and a dielectric elastic film 230 fixed between the two. The upper substrate 210 is fixed to the inner top wall of the waterproof housing 100; as Figures 5-6 As shown, the upper end of the dielectric elastic film 230 has an upper electrode 240 and the lower end has a lower electrode 250; the dielectric elastic film 230 can deform under force, but its total volume remains unchanged.

[0047] like Figure 1 As shown, the upper end of the lifting rod 400 is connected to the lower base plate 220, and the lower end is connected to the bracket 300; the lifting rod 400 is slidably connected to the waterproof box 100 and can move up and down relative to the waterproof box 100.

[0048] In this embodiment, the support 300 is fixed below the sea surface, and the waterproof box 100 floats on the sea surface. Since the dielectric elastic film 230 can undergo elastic deformation without changing its overall volume, i.e., the dielectric elastic film 230 is generally incompressible, it will extend and expand in other directions after being compressed in one direction. For example, if it deforms elastically in the vertical direction, it will extend and expand in lateral directions (front, back, left, right, etc.) to keep the overall volume of the dielectric elastic film 230 constant. During actual operation, the lifting rod 400 can move vertically relative to the waterproof box 100. Under the impact / beating action of tidal energy on the waterproof box 100, the lifting rod 400 and the waterproof box 100 can move vertically relative to each other (approaching or moving away from each other). During this relative movement, the dielectric elastic film 230 will be compressed and stretched in the vertical direction. During compression, the thickness of the dielectric elastic film 230 will decrease, and its lateral dimension will increase (e.g., ...). Figure 5 As shown), during the stretching deformation process, the thickness of the dielectric elastic film 230 will increase, and its lateral dimension will decrease (as shown). Figure 6 As shown), based on the power generation principle of the dielectric elastic film 230, when a power source is provided at both ends of the dielectric elastic film 230, for example, if the power source is a low-voltage power source (such as...), Figure 5 As shown, during compression, the low voltage U in，l During the thickness stretching process of the dielectric elastic film 230, the thickness of the dielectric elastic film 230 increases, and the lateral dimension will decrease (e.g., ...). Figure 6 As shown), according to the principle of charge conservation, the increase in the same charge density of the upper / lower electrode causes an increase in the voltage between the upper and lower electrodes (245, 250) at both ends of the dielectric elastic film 230 (as shown). Figure 6 As shown, during stretching, the high voltage U out，h The tidal power generation device generates electrical energy by actively forcing the dielectric elastic film 230 to undergo elastic deformation, ultimately converting it into electrical energy. It boasts advantages such as simple structure, small size, no noise, and low cost. Furthermore, this tidal power generation device is not limited by water flow velocity; even small-amplitude / low-flow tides can force the dielectric elastic film 230 to undergo compression / stretch deformation and convert it into electrical energy, improving energy utilization efficiency. This effectively utilizes natural resources without environmental pollution. It should be noted that the low voltage U here... in，l High voltage U out，h It has no special meaning; it is mainly used to illustrate the voltage U input when the dielectric elastic film 230 is compressed. in， l is lower than the voltage U output during stretching. out，h .

[0049] It should be noted that the up-and-down movement in this utility model is not an absolute vertical up-and-down movement, but can deviate from the vertical direction, and refers to a relative up-and-down movement in a roughly vertical direction; wherein, the upper substrate 210 is located above the lower substrate 220, and the dielectric elastic film 230 is elastically deformed in the direction of the up-and-down direction, that is, the direction in which the upper substrate 210 and the lower substrate 220 move closer or further away from each other, which is the up-and-down direction; the lifting rod 400 is located below the waterproof box 100, and the direction in which the two move closer or further away from each other is the direction of relative up-and-down movement. In addition, in this embodiment, the compression deformation of the dielectric elastic film 230 refers to the relative movement of the lifting rod 400 and the waterproof box 100 towards each other, causing the thickness of the dielectric elastic film 230 to decrease along the direction of relative movement; the tensile deformation of the dielectric elastic film 230 refers to the relative movement of the lifting rod 400 and the waterproof box 100 towards each other, causing the thickness of the dielectric elastic film 230 to increase along the direction of relative movement. It mainly presents the trend of thickness change of the dielectric elastic film 230 during the relative movement of the lifting rod 400 and the waterproof box 100, and is not an absolute stretching and compression.

[0050] In this embodiment, as Figure 1 As shown, the bracket 300 includes a first bracket 310 and a second bracket 320 spaced apart. A crankshaft 330 is pivotally connected between the first bracket 310 and the second bracket 320. The lower end of the lifting rod 400 is pivotally connected to an eccentric shaft section 331 of the crankshaft 330, wherein the eccentric shaft section 331 is as follows: Figure 7 The part shown is configured such that, during the rotation of the crankshaft 330, the lifting rod 400 can be driven to move up and down, thereby moving up and down relative to the waterproof housing 100; it should be noted that the upper end of the lifting rod 400 can be hinged to the lower base plate 220 of the power generation component 200.

[0051] In this embodiment, as Figure 1 As shown, a propeller 500 is fixed to one end of the crankshaft 330, and the propeller 500 has multiple blades (not shown in the figure). With this configuration, tidal energy can drive the propeller 500 to rotate, which in turn drives the crankshaft 330 to rotate. During the rotation of the crankshaft 330, it can drive the eccentric shaft segment 331 to move up and down around the rotation axis of the crankshaft 330, thereby driving the lifting rod 400 to move up and down. This enables the lifting rod 400 to move closer or further away from the waterproof housing 100, thereby compressing or stretching the dielectric elastic film 230, so that the lateral dimension and thickness of the dielectric elastic film 230 change.

[0052] In this embodiment, as Figures 2-4As shown, the power generation component 200 also includes an upper ring 260 fixed to the upper substrate 210; the dielectric elastic film 230 is fixed to the upper ring 260; with this configuration, when installing the power generation component 200, the dielectric elastic film 230 can be pre-installed on the upper ring 260 / upper substrate 210 and then installed in the sealed cavity of the waterproof housing 100, which is convenient for disassembly and assembly.

[0053] In this embodiment, the power generation component 200 also includes a lower ring (not shown in the figure) fixed to the lower end of the dielectric elastic film 230.

[0054] In this embodiment, a waterproof sealing ring (not shown in the figure) is provided at the sliding fit between the lifting rod 400 and the waterproof box 100 to prevent seawater from entering the sealed cavity of the waterproof box 100.

[0055] In this embodiment, as Figures 5-6 As shown, the power generation component 200 also includes a power source and an energy output terminal. One end of the power source is electrically connected to the upper electrode 240, and the other end is electrically connected to the lower electrode 250. This power source uses a low-voltage power supply to provide an initial voltage between the upper electrode 240 and the lower electrode 250. One end of the energy output terminal is electrically connected to the upper electrode 240, and the other end is electrically connected to the lower electrode 250. Both the upper electrode 240 and the lower electrode 250 are flexible electrodes, which can be formed through a coating process. Furthermore, the energy output terminal can be connected to an energy harvesting device to collect the electrical energy converted from tidal energy, further supplying power / charging to batteries or electronic devices.

[0056] In this embodiment, as Figures 1-4 As shown, the dielectric elastic film 230 has a frustum structure, wider at the top and narrower at the bottom. The materials of the dielectric elastic film 230 include acrylic acid and silicone rubber, but are not limited to these two materials. For example, other electroactive polymer materials can also be used, as long as the dielectric material exhibits elastic deformation and its overall volume is not compressed. For instance, the dielectric elastic film 230 is a sandwich structure formed by using a polymer as the main material and infiltrating flexible electrode layers into its top and bottom sides, similar to a parallel variable capacitor. The flexible electrode material can be selected from conductive carbon ester, carbon nanotube films, graphite, and other flexible electrode materials with ductility.

[0057] In this embodiment, there are multiple power generation components 200, which are spaced apart to increase power generation and improve the total power output. Specifically, multiple eccentric shaft segments 331 can be arranged in a spaced array along the rotation axis of the crankshaft 330; or, multiple spaced lifting rods 400 can be pivotally connected to the same eccentric shaft segment 331, and each lifting rod 400 is connected to a waterproof housing 100 and a power generation component 200.

[0058] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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 this utility model.

[0059] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "installation" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; and it can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tidal power generation device, characterized in that, include: A waterproof enclosure (100) floats on the sea surface and has a sealed chamber; A power generation component (200) is disposed in the sealed cavity and includes an upper substrate (210), a lower substrate (220), and a dielectric elastic film (230) fixed between the two. The upper substrate (210) is fixed to the inner top wall of the waterproof housing (100). The upper end of the dielectric elastic film (230) has an upper electrode (240), and the lower end has a lower electrode (250). The dielectric elastic film (230) can undergo elastic deformation under force, but its total volume remains unchanged. The support frame (300) is fixed below the sea surface; A lifting rod (400) is provided, with its upper end connected to the lower base plate (220) and its lower end connected to the bracket (300). The lifting rod (400) is slidably connected to the waterproof housing (100) and can move up and down relative to the waterproof housing (100).

2. The tidal power generation device according to claim 1, characterized in that, The bracket (300) includes a first bracket (310) and a second bracket (320) spaced apart, with a crankshaft (330) pivotally connected between the first bracket (310) and the second bracket (320), and the lower end of the lifting rod (400) is pivotally connected to the eccentric shaft section (331) of the crankshaft (330).

3. The tidal power generation device according to claim 2, characterized in that, One end of the crankshaft (330) is fixed with a propeller (500), which has multiple blades.

4. The tidal power generation device according to claim 3, characterized in that, The power generation component (200) also includes an upper ring fixed to the upper substrate (210), and the dielectric elastic film (230) is fixed to the upper ring (260).

5. The tidal power generation device according to claim 4, characterized in that, The power generation component (200) also includes a lower ring fixed to the lower end of the dielectric elastic film (230).

6. The tidal power generation device according to claim 4 or 5, characterized in that, A waterproof sealing ring is provided at the sliding fit between the lifting rod (400) and the waterproof box (100).

7. The tidal power generation device according to claim 6, characterized in that, The power generation component (200) also includes a power source and an electrical output terminal. One end of the power source is electrically connected to the upper electrode (240), and the other end is electrically connected to the lower electrode (250). One end of the electrical output terminal is electrically connected to the upper electrode (240), and the other end is electrically connected to the lower electrode (250).

8. The tidal power generation device according to claim 7, characterized in that, The dielectric elastic film (230) has a frustum structure that is larger at the top and smaller at the bottom.

9. The tidal power generation device according to claim 8, characterized in that, Both the upper electrode (240) and the lower electrode (250) are flexible electrodes and are coated on the dielectric elastic film (230).

10. The tidal power generation device according to claim 8, characterized in that, The power generation components (200) are multiple and spaced apart.

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