Wave energy capture power generation device

Abstract

The invention belongs to the technical field of ocean wave energy development, and discloses a wave energy capture power generation device which comprises a floating frame, an oscillation mechanism and a first fan, the floating frame is located on the sea surface, an oscillation cavity is formed in the floating frame, and an air inlet and an air outlet are formed in the oscillation cavity; the oscillation chamber is arranged in seawater to form a water cavity and an air cavity, the multiple oscillation floating bodies are distributed in the air cavity in an array mode, under the fluctuation effect of waves in the water cavity, the multiple oscillation floating bodies can ascend and descend in the vertical direction so that the air cavity can be in an exhaust state and an air suction state, and the fluctuation of the waves in the oscillation chamber can be changed into rising or falling relatively stable; and the first fan is arranged at the air inlet or the air outlet, is rotationally connected to the input end of the generator and is used for generating power by the generator, so that the condition that small waves in a single oscillation cavity are mutually counteracted and cannot be captured is completely eliminated, and the energy capturing efficiency is greatly improved.

Description

Technical Field

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

[0002] Green and renewable energy is the main energy source for developing the ocean and solving the problem of marine electricity. Wave energy in ocean energy is a kind of green and renewable energy, which has the advantages of rich reserves, wide distribution, all-weather, and convenient use.

[0003] Marine equipment that uses wave energy to generate electricity is called a wave energy power generation device. The traditional oscillating water column air chamber plus Wells wind turbine structure currently used can realize the conversion from wave energy to electrical energy. The oscillating water column wave energy power generation device has the advantages of high energy conversion efficiency and reliable structural design. However, since the waves rise and fall in a single oscillating water column air chamber, they offset each other's forces, thus failing to achieve maximum energy capture. For example, when the wave height is small, or the wavelength is too small, or the wavelength is too large, or it is in the transition between crests and troughs, etc., the ups and downs of the waves may even cancel out most of them, failing to generate enough intake and exhaust kinetic energy, and failing to maximize the rotation of the Wells wind turbine, so the generated electricity fails to meet expectations.

[0004] Therefore, there is an urgent need for wave energy capture and power generation devices to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a wave energy capture power generation device, which can change the fluctuation of the waves in the oscillation chamber into a relatively stable rise or fall, reduce the mutual cancellation of the wave fluctuations, and thus improve the energy capture efficiency.

[0006] In order to solve the above problems existing in the prior art, the present invention adopts the following technical solutions:

[0007] Wave energy capture power generation device, comprising:

[0008] floating rack, located on the sea surface;

[0009] An oscillation mechanism, comprising an oscillation chamber and a plurality of oscillation floats arranged in the oscillation chamber, wherein the oscillation chamber is arranged on the floating frame, and an air inlet and an air outlet are provided in the oscillation chamber, wherein the oscillation chamber is placed in seawater to form a water cavity and an air cavity, wherein a plurality of the oscillation floats are distributed in the air cavity in an array, and under the action of the ups and downs of waves in the water cavity, the plurality of the oscillation floats can be lifted and lowered in a vertical direction so that the air cavity is in an exhaust state and an intake state, wherein when the air cavity is in an exhaust state, the volume of the air cavity is reduced, and the gas in the air cavity is discharged through the air outlet, and when the air cavity is in an intake state, the volume of the air cavity is increased, and the air inlet is configured to provide gas to the air cavity;

[0010] A first fan is disposed at the air inlet or the air outlet, and the first fan is rotatably connected to the input end of the generator and is used for the generator to generate electricity.

[0011] Preferably, the wave energy capture power generation device also includes a second fan, a main air inlet pipe and a main air outlet pipe, and there are multiple oscillation mechanisms. The main air inlet pipe is connected to the air inlets corresponding to the multiple oscillation chambers, and the main air outlet pipe is connected to the air outlets corresponding to the multiple oscillation chambers. The second fan is arranged at the inlet of the main air inlet pipe or the outlet of the main air outlet pipe.

[0012] Preferably, the plurality of oscillating mechanisms are distributed in a matrix.

[0013] Preferably, the wave energy capture power generation device further comprises a third fan, the main air inlet pipe and the main air outlet pipe are connected via a connecting pipe, and the third fan is arranged in the connecting pipe.

[0014] Preferably, the third fan comprises blades and a connecting shaft, the blades and the generator are respectively located inside and outside the connecting pipe, and both ends of the connecting shaft are respectively connected to the blades and input ends of the generator.

[0015] Preferably, the connecting pipe is provided with a through hole, and the connecting shaft is rotatably disposed through the through hole.

[0016] Preferably, the wave energy capture power generation device further comprises an air intake check valve, the air intake end of the air intake check valve is connected to the main air intake pipe, and the air outlet end of the air intake check valve is connected to the air inlet.

[0017] Preferably, the wave energy capture power generation device further comprises an air outlet one-way valve, the air inlet end of the air outlet one-way valve is connected to the air outlet, and the air outlet end of the air outlet one-way valve is connected to the main air outlet pipe.

[0018] Preferably, the cross-sectional shape of the oscillation chamber is circular or square.

[0019] Preferably, the wave energy capture and power generation device further comprises a photovoltaic panel, wherein the photovoltaic panel is disposed on the floating frame and the photovoltaic panel is located above the oscillating mechanism.

[0020] The beneficial effects of the present invention are:

[0021] The wave energy capture power generation device provided by the present invention has a floating frame located on the sea surface, an oscillation mechanism including an oscillation chamber and a plurality of oscillation floats arranged in the oscillation chamber, the oscillation chamber is arranged on the floating frame, the oscillation chamber is provided with an air inlet and an air outlet, the oscillation chamber is placed in the seawater to form a water cavity and an air cavity, a plurality of oscillation floats are distributed in the air cavity in an array, and under the action of the ups and downs of the waves in the water cavity, the plurality of oscillation floats can be lifted and lowered in the vertical direction so that the air cavity is in an exhaust state and an intake state. When the rise of the waves is greater than the fall, that is, the number of the plurality of oscillation floats in the oscillation chamber that rise is greater than the number of the plurality of oscillation floats that fall, the air in the air cavity is compressed by the oscillation floats, and the air is discharged through the air outlet, at which time, the air cavity is in an exhaust state. When the fall of the waves is greater than the rise, that is, the number of the plurality of oscillation floats in the oscillation chamber that rise is less than the number of the plurality of oscillation floats that fall, the volume of the air cavity becomes larger, and the external air enters the air cavity through the air inlet, at which time, the air cavity is in an intake state. The undulating waves in the oscillation chamber are changed to relatively stable waves, which reduces the mutual cancellation of the waves. Fans are provided at both the air inlet and the air outlet, so that the energy of the intake and the energy of the exhaust are respectively transmitted through the air inlet and the air outlet to drive the first fan, which rotates to drive the generator to generate electricity, completely eliminating the situation where small waves in a single oscillation chamber cancel each other out and cannot be captured, greatly improving the energy capture efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of an array of oscillating floating bodies provided in an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of an oscillation chamber provided in an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the structure of a wave energy capture power generation device provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the connection between a third fan and a generator provided in an embodiment of the present invention;

[0026] Figure 5 A top view of a wave energy capture and power generation device provided in an embodiment of the present invention installed on a device vessel.

[0027] Reference numerals:

[0028] 100. Equipment ship;

[0029] 1. Floating rack;

[0030] 2. Oscillation chamber; 21. Air inlet; 22. Air outlet; 23. Water chamber; 24. Air chamber;

[0031] 3. Oscillating float;

[0032] 4. Generator;

[0033] 5. Main air intake pipe;

[0034] 6. Main air outlet pipe;

[0035] 7. third fan; 71. fan blade; 72. connecting shaft;

[0036] 8. Intake check valve;

[0037] 9. Air outlet one-way valve;

[0038] 10. Photovoltaic panels. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] like Figure 1-Figure 5 As shown, in this embodiment, the wave energy capture power generation device includes a floating frame 1, an oscillation mechanism and a first fan. The floating frame 1 is located on the sea surface, the oscillation mechanism includes an oscillation chamber 2 and a plurality of oscillation floats 3 arranged in the oscillation chamber 2, the oscillation chamber 2 is arranged on the floating frame 1, the oscillation chamber 2 is provided with an air inlet 21 and an air outlet 22, the oscillation chamber 2 is placed in the sea water to form a water cavity 23 and an air cavity 24, and a plurality of oscillation floats 3 are distributed in the air cavity 24 in an array. Under the action of the ups and downs of the waves in the water cavity 23, the plurality of oscillation floats 3 can be lifted and lowered in the vertical direction to put the air cavity 24 in an exhaust state and an intake state. When the air cavity 24 is in the exhaust state, the volume of the air cavity 24 is reduced, and the gas in the air cavity 24 is discharged through the air outlet 22. When the air cavity 24 is in the intake state, the volume of the air cavity 24 is increased, and the air inlet 21 is configured to provide gas to the air cavity 24. The first fan is disposed at the air inlet 21 or the air outlet 22 , and the first fan is rotatably connected to the input end of the generator 4 and is used for the generator 4 to generate electricity.

[0044] Specifically, the floating frame 1 is composed of a bottom frame and a plurality of buoys and floats on the sea surface. The oscillation chamber 2 is a cylindrical or cube structure, and its cross-sectional area is designed according to the conditions of the sea waves, and the area is 1 to 3 square meters. The oscillation float 3 is set as an oscillating water column, and a plurality of oscillation floats 3 are fastened in the oscillation chamber 2 in a row and column manner to form a semi-submersible array structure, such as a row of 5 oscillation floats 3, a total of 5 rows, and a total of 25 oscillation floats 3 to form an array distribution. Optionally, the density of the array can be designed according to the sea conditions of the sea area. The oscillation chamber 2 is provided with two air inlets 21 and air outlets 22 in different directions, the air inlet 21 is arranged on the side wall of the oscillation chamber 2, and the air outlet 22 is arranged on the top of the oscillation chamber 2. The size of the air inlet 21 and the air outlet 22 is designed according to the sea conditions, wave height, wave energy density, designed power generation, etc. The upper and lower parts of the oscillation chamber 2 are located on the sea surface and in the sea water, respectively, and the bottom of the oscillation chamber 2 has an opening, and the sea water can enter the interior of the oscillation chamber 2 through the bottom opening to form a water cavity 23. One end of the multiple oscillation floats 3 distributed in an array is located in the air cavity 24, and the other end is in contact with the sea surface of the water cavity 23. The oscillation floats 3 can move in the vertical direction with the ups and downs of the waves, thereby squeezing or releasing the air in the air cavity 24. When the rise of the waves is greater than the fall, that is, the number of the multiple oscillation floats 3 in the oscillation chamber 2 that rise is greater than the number of the descending ones, the air in the air cavity 24 is compressed by the oscillation floats 3, and the air is discharged through the air outlet 22. At this time, the air cavity 24 is in an exhaust state. When the fall of the waves is greater than the rise, that is, the number of the multiple oscillation floats 3 in the oscillation chamber 2 that rise is less than the number of the descending ones, the volume of the air cavity 24 becomes larger, and the external air enters the air cavity 24 through the air inlet 21. At this time, the air cavity 24 is in an air intake state. The wave fluctuations in the oscillation chamber 2 are changed to relatively stable, reducing the mutual cancellation of the wave fluctuations, thereby improving the energy capture efficiency. The air inlet 21 and the air outlet 22 are divided into two different pipes, and the air inlet 21 and the air outlet 22 are both provided with fans, so that the energy of the intake and the energy of the exhaust are transmitted through the air inlet 21 and the air outlet 22 respectively and drive the first fan, and the first fan rotates to drive the generator 4 to generate electricity, completely eliminating the situation where the small waves in the single oscillation chamber 2 cancel each other and cannot be captured, and greatly improving the energy capture efficiency. Since the energy captured is the energy of the up and down oscillation of the waves, and the energy of the lateral movement of the waves is not captured, there is no need to consider the direction of the waves, that is, the capture efficiency is independent of the direction of the waves, and is more suitable for power generation in various sea conditions.

[0045] Further, continue to refer to Figure 1-Figure 5The wave energy capture power generation device further includes a second fan, a main air inlet pipe 5 and a main air outlet pipe 6. There are multiple oscillation mechanisms. The main air inlet pipe 5 is connected to the air inlets 21 corresponding to the multiple oscillation chambers 2. The main air outlet pipe 6 is connected to the air outlets 22 corresponding to the multiple oscillation chambers 2. The second fan is arranged at the inlet of the main air inlet pipe 5 or the outlet of the main air outlet pipe 6. There are two second fans and generators 4. The multiple oscillation mechanisms are distributed in a matrix. The air outlets 22 of the multiple oscillation chambers 2 are connected to the main air outlet pipe 6 by air pipes, that is, all exhaust gases are discharged through the main air outlet pipe 6. The wind discharged through the main air outlet pipe 6 drives the second fan to rotate, thereby driving the generator 4 to generate electricity. The air inlets 21 of the multiple oscillation chambers 2 are connected to the main air inlet pipe 5 by air pipes, and the external air enters each air inlet 21 through the main air inlet pipe 5. The wind sucked in through the main air inlet pipe 5 drives the second fan to rotate, thereby driving the generator 4 to generate electricity. The generator 4, the second fan, the main air inlet pipe 5, the main air outlet pipe 6 and the anchor chain are installed on the equipment ship 100, and a plurality of oscillation mechanisms are installed on both sides of the equipment ship 100 through fixed structures such as shafts.

[0046] Further, continue to refer to Figure 1-Figure 5 The wave energy capture power generation device further includes a third fan 7. The main air inlet pipe 5 and the main air outlet pipe 6 are connected via a connecting pipe, and the third fan 7 is arranged in the connecting pipe. The number of the third fan 7 and the generator 4 is one. The third fan 7 includes a fan blade 71 and a connecting shaft 72, which connect and seal the main air inlet pipe 5 and the main air outlet pipe 6, that is, the main air inlet pipe 5 and the main air outlet pipe 6 form a closed space. Under the action of the ups and downs of the waves, the gas circulates in the closed space and drives the fan blade 71 to rotate, the fan blade 71 drives the connecting shaft 72 to rotate, and the connecting shaft 72 drives the generator 4, so that the generator 4 generates electricity. When the diameter of the connecting pipe is large enough, the generator 4 can be installed inside the connecting pipe. When the diameter of the connecting pipe is not enough to install the generator 4, the fan blades 71 and the generator 4 are located inside and outside the connecting pipe respectively. The connecting pipe is provided with a through hole. The connecting shaft 72 rotates and penetrates through the through hole without affecting the rotation of the connecting shaft 72. The two ends of the connecting shaft 72 are respectively connected to the fan blades 71 and the input end of the generator 4 to drive the generator 4 to generate electricity. The opening of the through hole is as small as possible to reduce the penetration of the pipe inside and outside. Optionally, a bearing is installed on the through hole, and the connecting shaft 72 of the fan is penetrated by the bearing.

[0047] Further, continue to refer to Figure 1-Figure 5The wave energy capture power generation device also includes an air inlet check valve 8 and an air outlet check valve 9. The air inlet end of the air inlet check valve 8 is connected to the main air inlet pipe 5, and the air outlet end of the air inlet check valve 8 is connected to the air inlet 21. The air inlet end of the air outlet check valve 9 is connected to the air outlet 22, and the air outlet end of the air outlet check valve 9 is connected to the main air outlet pipe 6. Under the action of the air inlet check valve 8, the external air can enter the air cavity 24 through the main air inlet pipe 5, while the air in the air cavity 24 cannot be discharged to the outside through the main air inlet pipe 5. Under the action of the air outlet check valve 9, the air in the air cavity 24 can enter the outside through the main air outlet pipe 6, while the external air cannot enter the air cavity 24 through the main air outlet pipe 6. Optionally, a silicone pad or a spherical valve body is used, and when there is an air pressure difference between the inside and outside of the oscillation chamber 2, closing or opening can be achieved in one direction.

[0048] Further, continue to refer to Figure 1-Figure 5 The wave energy capture power generation device further includes a photovoltaic panel 10, which is disposed on the floating frame 1 and is located above the oscillating mechanism. The photovoltaic panel 10 can generate electricity.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A wave energy capture power generation device, characterized in that: include: A floating frame (1) located on the sea surface; An oscillation mechanism comprises an oscillation chamber (2) and a plurality of oscillation floats (3) arranged in the oscillation chamber (2); the oscillation chamber (2) is arranged on the floating frame (1); the oscillation chamber (2) is provided with an air inlet (21) and an air outlet (22); the oscillation chamber (2) is placed in seawater to form a water cavity (23) and an air cavity (24); the plurality of oscillation floats (3) are distributed in an array in the air cavity (24); and the rise and fall of waves in the water cavity (23) is induced by the oscillation of the oscillation floats. Under the action, the plurality of oscillating floats (3) can be lifted and lowered in the vertical direction so that the air cavity (24) is in an exhaust state and an intake state. When the air cavity (24) is in the exhaust state, the volume of the air cavity (24) is reduced, and the gas in the air cavity (24) is discharged through the gas outlet (22). When the air cavity (24) is in the intake state, the volume of the air cavity (24) is increased, and the gas inlet (21) is configured to provide gas to the air cavity (24); A first fan, wherein the first fan is arranged at the air inlet (21) or the air outlet (22), and the first fan is rotatably connected to the input end of the generator (4) and is used for the generator (4) to generate electricity.

2. The wave energy capture power generation device according to claim 1, characterized in that: The wave energy capture power generation device also includes a second fan, a main air inlet pipe (5) and a main air outlet pipe (6). There are multiple oscillation mechanisms. The main air inlet pipe (5) is connected to the air inlets (21) corresponding to the multiple oscillation chambers (2), and the main air outlet pipe (6) is connected to the air outlets (22) corresponding to the multiple oscillation chambers (2). The second fan is arranged at the inlet of the main air inlet pipe (5) or the outlet of the main air outlet pipe (6).

3. The wave energy capture power generation device according to claim 2, characterized in that: The plurality of oscillating mechanisms are distributed in a matrix.

4. The wave energy capture power generation device according to claim 2, characterized in that: The wave energy capture power generation device further comprises a third fan (7); the main air inlet pipe (5) and the main air outlet pipe (6) are connected via a connecting pipe, and the third fan (7) is arranged in the connecting pipe.

5. The wave energy capture and power generation device according to claim 4, characterized in that: The third fan (7) comprises a fan blade (71) and a connecting shaft (72); the fan blade (71) and the generator (4) are respectively located inside and outside the connecting pipe; and two ends of the connecting shaft (72) are respectively connected to the fan blade (71) and the input end of the generator (4).

6. The wave energy capture and power generation device according to claim 5, characterized in that: The connecting pipe is provided with a through hole, and the connecting shaft (72) is rotatably arranged to pass through the through hole.

7. The wave energy capture and power generation device according to claim 2, characterized in that: The wave energy capture power generation device also includes an air intake check valve (8), the air intake end of the air intake check valve (8) is connected to the main air intake pipe (5), and the air outlet end of the air intake check valve (8) is connected to the air inlet (21).

8. The wave energy capture and power generation device according to claim 2, characterized in that: The wave energy capture power generation device also includes an outlet one-way valve (9), the air inlet end of the outlet one-way valve (9) is connected to the air outlet (22), and the air outlet end of the outlet one-way valve (9) is connected to the main air outlet pipe (6).

9. The wave energy capture and power generation device according to claim 1, characterized in that: The cross-sectional shape of the oscillation chamber (2) is circular or square.

10. The wave energy capture and power generation device according to claim 1, characterized in that: The wave energy capture and power generation device further comprises a photovoltaic panel (10), wherein the photovoltaic panel (10) is arranged on the floating frame (1), and the photovoltaic panel (10) is located above the oscillating mechanism.

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