Composite wave power generation device

Abstract

The utility model discloses a composite type wave energy power generation device which comprises a wave energy power generation system, and the wave energy power generation system comprises a buoy, an upper base, a lower base and a power generation assembly installed in the buoy. The buoy is of an annular structure and comprises a plurality of arc-shaped shells and porous arc-shaped shells which are alternately arranged in the circumferential direction, and the porous arc-shaped shells are wave inlets; the power generation assembly comprises a supporting column, a fan blade assembly installed on the periphery of the supporting column, piezoelectric patches installed at the upper end and the lower end of the supporting column and a permanent magnet installed in the lower base. Waves enter the buoy from the porous arc-shaped shell to drive the fan blade assembly to rotate around the supporting column in a magnetic field generated by the permanent magnet so as to generate induced current. Waves drive the fan blade assemblies to oscillate up and down along the supporting columns, and periodic pressure is applied to the piezoelectric patches at the upper and lower ends to enable the piezoelectric patches to generate electricity. According to the wave energy power generation system, transverse and longitudinal energy of waves can be utilized at the same time, and power generation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wave energy power generation technical field especially relates to a composite wave energy power generation device. BACKGROUND

[0002] According to the statistics released by the International Renewable Energy Agency, the global ocean energy annual development potential is 45 trillion kWh to 130 trillion kWh, and mainly exists in the form of wave energy. Although the energy density of wave energy is low, the energy storage is huge, and it is renewable and pollution-free in the power generation process. The most basic principle of wave energy power generation at present is to make the device work and drive the generator to generate electricity through the movement of waves, and to convert the mechanical energy of water in the form of kinetic energy and potential energy into electrical energy.

[0003] However, according to the calculation of relevant experts, the power generation cost of ocean wave energy at the present stage is about ten times higher than that of conventional thermal power generation, so the cost problem has become the biggest obstacle to popularize and large-scale use of wave energy power generation. Moreover, under normal circumstances, the waves of the ocean are changing all the time, and the energy of the wave energy is dispersed and not easy to concentrate, so the total efficiency of the device is not high. In addition, the ocean floating garbage not only destroys the environment, but also hits the device and gathers to block the power generation point array, eventually leading to the destruction of the device. SUMMARY

[0004] The main purpose of the utility model is to provide a composite wave energy power generation device, which is a floating point type power generation device. When the floating point is excited by the sea waves, the fan blades inside the device rotate under the drive of wave energy to make a cutting magnetic induction line motion to generate current, realizing the capture of transverse wave energy. At the same time, the up and down vibration of the waves applies pressure to the piezoelectric sheet to generate current, realizing the capture of longitudinal wave energy. Therefore, the device can reduce the power generation cost and improve the power generation efficiency.

[0005] The technical scheme adopted by the utility model is:

[0006] A composite wave energy power generation device, comprising a wave energy power generation system, the wave energy power generation system comprising a float, an upper base installed on the upper end of the float, a lower base installed on the lower end of the float, and a power generation assembly installed inside the float; the float is a ring structure, comprising a plurality of arc-shaped shells and porous arc-shaped shells arranged alternately in the circumferential direction, and the porous arc-shaped shells are wave inlets; the power generation assembly comprises a support column, a fan blade assembly installed on the periphery of the support column, piezoelectric sheets installed on the upper and lower ends of the support column, and a permanent magnet installed inside the lower base; waves enter the inside of the float from the porous arc-shaped shells, drive the fan blade assembly to rotate around the support column in the magnetic field generated by the permanent magnet to generate induced current; at the same time, the waves drive the fan blade assembly to oscillate up and down along the support column, and the periodic pressure on the piezoelectric sheets at the upper and lower ends makes the piezoelectric sheets generate electricity.

[0007] In the above scheme, the fan assembly comprises a first sleeve sleeved on the outer circle of the support column and a plurality of arc-shaped fan blades installed on the outer periphery of the first sleeve; the first sleeve and the support column are installed with a first ball bearing.

[0008] In the above scheme, the wave energy power generation system further comprises a current collecting assembly, the current collecting assembly comprises a second sleeve, a second ball bearing, a wire and a battery assembly, the second sleeve is sleeved on the bottom end of the support column, the second sleeve and the support column are installed with the second ball bearing, and the battery assembly is installed on the second sleeve; the two ends of the arc-shaped fan blade perpendicular to the direction of the magnetic field are connected with the battery assembly through the wire respectively.

[0009] In the above scheme, springs are installed between the fan assembly and the piezoelectric sheets at the upper and lower ends of the fan assembly respectively.

[0010] In the above scheme, the floating tube is in the shape of a circular truncated cone with a thin upper end and a thick lower end.

[0011] In the above scheme, the composite wave energy power generation device further comprises a garbage collecting system installed on the upper part of the wave energy power generation system, the garbage collecting system comprises a stand, a plurality of perforated arc-shaped doors and an arc-shaped baffle; a plurality of the stands are fixedly installed along the upper surface of the upper base in a circumferential direction, one perforated arc-shaped door is rotatably installed on the two sides of each stand, and all the perforated arc-shaped doors form a cylindrical structure after being enclosed, and an arc-shaped baffle is fixedly installed on the outer side of each stand to prevent the perforated arc-shaped door from rotating outward and only allow the perforated arc-shaped door to rotate inward.

[0012] In the above scheme, the garbage collecting system further comprises a perforated baffle, and the two ends of the perforated baffle are fixedly connected with the inner sides of two oppositely arranged stands.

[0013] In the above scheme, the garbage collecting system further comprises a perforated cover plate, and the perforated cover plate is fixedly installed on the upper end of the stand.

[0014] In the above scheme, the piezoelectric sheet at the upper end of the support column is fixedly connected with the upper base, and the piezoelectric sheet at the lower end of the support column is fixedly connected with the lower base.

[0015] In the above scheme, the composite wave energy power generation device is installed on the offshore platform in an array manner.

[0016] The beneficial effects of the present application are as follows:

[0017] 1. The wave energy power generation system of the utility model cuts the magnetic induction line to produce induced current by rotating the arc-shaped fan blade in the horizontal direction driven by the wave, simultaneously, produces current by pressing the piezoelectric sheet driven by the arc-shaped fan blade in the vertical direction, therefore, can utilize the energy of the wave in the horizontal and vertical directions, and improve the power generation efficiency.

[0018] 2. The utility model discloses a garbage collection system is arranged on the top of the wave energy power generation system, collects the marine garbage through the multi -hole arc -shaped door of inboard rotation, protects the fan blade from the impact, improves the device life and helps environmental protection.

[0019] 3. The utility model discloses a composite wave energy power generation device, which is small in size and light in weight, can be installed on a marine platform (such as a large offshore photovoltaic power generation pile, an offshore natural gas exploitation platform, a large offshore wind power platform, etc.) in an array arrangement mode through a rope, a chain or the like, and does not need an additional fixing device. DETAILED DESCRIPTION

[0020] The utility model will be described further below in combination with the drawings and examples, and the drawings are as follows:

[0021] Figure 1 It is the structure schematic diagram of the utility model composite wave energy power generation device;

[0022] Figure 2 It is the internal structure schematic diagram of the wave energy power generation system;

[0023] Figure 3 It is Figure 2 The partial close-up view of the upper end structure;

[0024] Figure 4 It is Figure 2 The partial close-up view of the lower end structure;

[0025] Figure 5 It is the schematic diagram of the water flow driving fan blade rotation;

[0026] Figure 6 It is the structure schematic diagram of the garbage collection system;

[0027] Figure 7 It is the partial structure close-up view of the column of the garbage collection system.

[0028] In the drawing: 10, wave energy power generation system;11, buoy;111, arc-shaped shell;112, multi -hole arc -shaped shell;12, upper base;13, lower base;14, fan blade assembly;141, first sleeve;142, arc-shaped fan blade;143, first ball bearing;15, support column;16, spring;17, piezoelectric sheet;18, current collection assembly;181, second sleeve;182, second ball bearing;183, wire;184, battery assembly;

[0029] 20. Waste collection system; 21. Column; 22. Perforated arched door; 23. Hinge; 24. Arched baffle; 25. Perforated baffle; 26. Perforated cover. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0031] like Figures 1-4 The diagram shows a preferred embodiment of a composite wave energy power generation device of the present invention, comprising a wave energy power generation system 10 and a waste collection system 20 installed on the upper part of the wave energy power generation system 10. The wave energy power generation system 10 includes a float 11, an upper base 12 installed on the upper end of the float 11, a lower base 13 installed on the lower end of the float 11, and a power generation component installed inside the float 11. The float 11 has an annular structure, including a plurality of arc-shaped outer shells 111 and porous arc-shaped outer shells 112 arranged alternately along the circumference; the porous arc-shaped outer shells 112 serve as wave inlets. The power generation component includes a support column 15, a fan blade assembly 14 installed around the support column 15, piezoelectric plates 17 installed at the upper and lower ends of the support column 15, and a permanent magnet (not shown) installed inside the lower base 13. Waves enter the interior of the float 11 through the porous arc-shaped outer shell 112, causing the fan blade assembly 14 to rotate around the support column 15 in the magnetic field generated by the permanent magnet, thereby generating an induced current. At the same time, the waves cause the fan blade assembly 14 to oscillate up and down along the support column 15, applying periodic pressure to the piezoelectric plates 17 at the upper and lower ends, causing the piezoelectric plates 17 to generate electricity.

[0032] In a preferred embodiment, the fan blade assembly 14 includes a first sleeve 141 fitted around the outer ring of the support column 15 and four arc-shaped fan blades 142 mounted on the outer periphery of the first sleeve 141. A first ball bearing 143 is installed between the first sleeve 141 and the support column 15 to reduce the frictional force on the rotating fan blades and improve power generation efficiency.

[0033] In this invention, the main principle of electromagnetic induction power generation is that waves, after being rectified and converged by the porous arc-shaped outer shell 112, enter the interior of the float 11, driving the arc-shaped fan blades 142 to rotate and cut magnetic field lines, generating an induced current. Due to the outer shell restricting the water entry position and the design of the arc-shaped fan blades 142, no matter how complex the waves are, the force of the incoming water flow driving the fan blades to rotate in a certain direction is always much greater than the force driving the fan blades to rotate in the opposite direction, avoiding the mutual collision of wave energy in complex environments that could affect power generation efficiency or even damage the device. Figure 5As shown, assuming the wavy lines in the figure are the water flow direction, the total area of water flow pushing the fan blades to rotate clockwise is always much larger than that pushing the fan blades to rotate counterclockwise in the figures (5-1) and (5-2), thus the fan blades can continuously rotate clockwise.

[0034] In the preferred embodiment, the fan blade assembly 14 further comprises a current collection assembly 18 for collecting the induced current generated by the fan blade assembly 14. The current collection assembly comprises a second sleeve 181, a second ball bearing 182, a wire 183 and a battery assembly 184, the second sleeve 181 is sleeved on the bottom end of the support column 15, the second ball bearing 182 is installed between the second sleeve 181 and the support column 15, and the battery assembly 184 is installed on the second sleeve 181; the two ends of the arc-shaped fan blade 142 perpendicular to the direction of the magnetic field are connected to the battery assembly 184 through the wire 183, respectively. In this embodiment, the four arc-shaped fan blades 142 cut the magnetic field respectively, so that potential difference is generated at the two ends perpendicular to the direction of the magnetic field, and the two ends are connected to the battery assembly 184 through the wire 183, respectively, to charge it. The rectifier device and the battery are provided in the battery 184, which is connected with the support column 15 through the second sleeve 181 and the second ball bearing 182, so that it can rotate with the arc-shaped fan blade 142, preventing the wire 183 from winding.

[0035] In the preferred embodiment, springs 16 are installed between the fan blade assembly 14 and the piezoelectric sheets 17 at the upper and lower ends thereof. Under the action of the sea waves, the ball bearings 143 can slide up and down along the support column 15, giving the springs 16 periodic pressure, which is transmitted to the piezoelectric sheets 17 to make them generate electricity. Due to the different degrees of action of the sea waves, the amplitude and speed of the up-and-down vibration of the fan blade assembly 14 are different, and the springs 16 also act as dampers to reduce the vibration amplitude of the fan blade assembly 14 under the waves, avoiding damage to the device due to excessive force.

[0036] In the preferred embodiment, the piezoelectric sheet 17 at the upper end of the support column 15 is fixedly connected with the upper base 12, the piezoelectric sheet 17 at the lower end of the support column 15 is provided with a hole for the support column 15 to pass through, and the piezoelectric sheet 17 at the lower end is fixedly connected with the support column 15, and the bottom end of the support column 15 is fixedly connected with the lower base 13.

[0037] In the preferred embodiment, the buoy 11 is in the shape of a circular truncated cone with a thin upper end and a thick lower end.

[0038] As Figures 6-7As shown, the garbage collection system 20 comprises a plurality of columns 21, a plurality of perforated arc-shaped doors 22 and an arc-shaped baffle 24; the plurality of columns 21 are fixedly installed along the upper surface of the upper base 12 in a circumferential direction, and each of the plurality of columns 21 is rotatably installed with a perforated arc-shaped door 22 through a hinge 23 on both sides thereof, all the perforated arc-shaped doors 22 form a cylindrical structure after being enclosed, and an arc-shaped baffle 24 is fixedly installed on the outer side of the plurality of columns 21 to prevent the perforated arc-shaped doors 22 from rotating outward, so that the perforated arc-shaped doors 22 can only rotate inward.

[0039] In a preferred embodiment, the garbage collection system 20 further comprises a plurality of perforated baffles 25, and each of the plurality of perforated baffles 25 is fixedly connected to the inner side of two oppositely arranged columns 21. The plurality of perforated baffles 25 can increase the structural strength of the garbage collection system 20 and block garbage while allowing water to flow through.

[0040] In a preferred embodiment, the garbage collection system 20 further comprises a plurality of perforated cover plates 26, and each of the plurality of perforated cover plates 26 is fixedly installed at the upper end of a column 21.

[0041] In a preferred embodiment, the plurality of columns 21 and the arc-shaped baffle 24 are both arranged in a cross shape, and the plurality of perforated baffles 25 are arranged in a cross shape inside the plurality of perforated arc-shaped doors 22. The plurality of perforated arc-shaped doors 22 are arranged in eight, and can form a complete circle after being enclosed.

[0042] The principle of the garbage collection system 20 is that, after the garbage hits the wave power generation system 10, the garbage cannot pass through the net-shaped protection structure of the water inlet and will climb to the top along the circular-truncated-cone-shaped shell under the action of the sea waves, the perforated arc-shaped door 22 at the top is forced to open, and the large garbage is washed into the net-shaped collection device, and the protection fan blades are prevented from being hit, thereby improving the service life of the device and assisting environmental protection. Since the entire system adopts fine and dense net-shaped materials, the waves will not be blocked inside the device to generate backflow and take the garbage out again.

[0043] Since the power generation device is small in size and light in weight, the composite wave power generation device can be installed on the offshore platform (such as a large offshore photovoltaic power generation pile, an offshore natural gas exploitation platform, a large offshore wind power generation platform, etc.) in an array arrangement mode through a rope, a chain or the like without the need for additional fixing devices.

[0044] It should be understood that those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall fall within the protection scope of the appended claims of the present utility model.

Claims

1. A composite wave energy generation device, characterized in that, The system includes a wave energy power generation system, which includes a buoy, an upper base installed at the upper end of the buoy, a lower base installed at the lower end of the buoy, and a power generation component installed inside the buoy. The pontoon has a ring-shaped structure, including several arc-shaped outer shells and a porous arc-shaped outer shell arranged alternately along the circumference. The porous arc-shaped outer shell serves as a wave inlet. The power generation component includes a support column, a fan blade assembly installed around the support column, piezoelectric sheets installed at the upper and lower ends of the support column, and a permanent magnet installed inside the lower base. Waves enter the interior of the float through the porous arc-shaped outer shell, causing the fan blade assembly to rotate around the support column in the magnetic field generated by the permanent magnet, thereby generating an induced current. At the same time, the waves cause the fan blade assembly to oscillate up and down along the support column, applying periodic pressure to the piezoelectric plates at the upper and lower ends to generate electricity.

2. The composite wave energy generation device according to claim 1, characterized in that, The fan blade assembly includes a first sleeve fitted around the outer ring of the support column and a plurality of arc-shaped fan blades installed around the outer periphery of the first sleeve; a first ball bearing is installed between the first sleeve and the support column.

3. The composite wave energy generation device according to claim 2, characterized in that, The wave energy power generation system also includes a current collection component, which includes a second sleeve, a second ball bearing, wires, and a battery assembly. The second sleeve is fitted onto the bottom end of the support column, and the second ball bearing is installed between the second sleeve and the support column. The battery assembly is installed on the second sleeve. The two ends of the arc-shaped fan blade perpendicular to the magnetic field direction are respectively connected to the battery assembly through wires.

4. The composite wave energy generation device according to claim 1, characterized in that, Springs are installed between the fan blade assembly and the piezoelectric plates at its upper and lower ends.

5. The composite wave energy generation device according to claim 1, characterized in that, The pontoon is shaped like a frustum, narrower at the top and wider at the bottom.

6. The composite wave energy generation device according to claim 1, characterized in that, The composite wave energy power generation device also includes a waste collection system installed on the upper part of the wave energy power generation system. The waste collection system includes columns, perforated arc-shaped doors, and arc-shaped baffles. Several columns are fixedly installed circumferentially along the upper surface of the upper base. A perforated arc-shaped door is rotatably installed on each side of the column. All the perforated arc-shaped doors form a cylindrical structure when they are closed. An arc-shaped baffle is fixedly installed on the outside of the column to prevent the perforated arc-shaped doors from rotating outward, so that they can only rotate inward.

7. The composite wave energy generation device according to claim 6, characterized in that, The waste collection system also includes a perforated baffle, the two ends of which are fixedly connected to the inner sides of two oppositely arranged columns.

8. The composite wave energy generation device according to claim 6, characterized in that, The waste collection system also includes a perforated cover plate, which is fixedly installed on the upper end of the column.

9. The composite wave energy generation device according to claim 1, characterized in that, The piezoelectric sheet at the upper end of the support column is fixedly connected to the upper base, and the piezoelectric sheet at the lower end of the support column is fixedly connected to the lower base.

10. The composite wave energy generation device according to claim 1, characterized in that, The composite wave energy generation device is installed on an offshore platform in an array.

Images