Oscillating water column type wave power generation device

Abstract

The utility model discloses an oscillating water column type wave power generation device which comprises a cavity and an air turbine power generation device, and the air turbine power generation device is communicated with the cavity and is configured to generate power under the action of air pressure difference. The device further comprises a wave frequency monitoring device, a driving device, a controller and a first plate. The first plate is arranged in the cavity, and the first plate is configured to be movable to change the capacity of the cavity; the driving device is connected with the first plate and is used for driving the first plate to move; the controller is electrically connected with the wave frequency monitoring device and the driving device. Due to the adoption of the technical scheme, compared with the prior art, the capacity of the cavity is changed by moving the first plate, and then the fundamental frequency of the cavity is changed to enable waves in the cavity to achieve resonance, so that the movement amplitude of the waves in the cavity is increased, and the power generation efficiency of the oscillating water column type wave energy power generation device is improved; and efficient work of power generation equipment is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of marine renewable energy utilization, in particular to an oscillating water column type wave energy power generation device. Background Art

[0002] With the acceleration of industrialization and urbanization, greenhouse gas emissions from human activities are increasing, leading to global warming and environmental degradation. To protect the environment and promote sustainable development, the development of alternative energy sources has become a major trend. The ocean is one of the most prominent features of the Earth's surface, covering 71% of its surface area. The ocean offers numerous renewable energy sources with vast reserves, offering promising prospects for their development and utilization. Wave energy, among other options, is particularly attractive due to its wide distribution and high energy density.

[0003] Most wave energy power generation devices can be divided into three types according to their working principles: oscillating water column type, oscillating float type and overtopping type. Among them, the oscillating water column type wave energy device was developed the earliest and is widely used due to its simple structure and easy array. Figure 1 As shown in the figure, the operating principle is that the up and down movement of waves uses the flow of air within the chamber to drive the air turbine to rotate and generate electricity. With this structure, the amplitude of the wave's up and down movement is the most important factor affecting the efficiency of wave energy generation. However, the large fluctuations in seawater due to weather and tides make it difficult to ensure the efficient operation of the power generation equipment.

[0004] Therefore, it is urgent to develop an oscillating water column type wave energy power generation device to improve the power generation efficiency of the oscillating water column type wave energy power generation device and ensure the efficient operation of the power generation equipment. Summary of the Invention

[0005] The present application provides an oscillating water column wave energy power generation device to solve the technical problem that the existing wave energy power generation device has low power generation efficiency and cannot work efficiently.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions.

[0007] An oscillating water column wave energy power generation device, comprising a chamber and an air turbine power generation device, the air turbine power generation device being in communication with the chamber and configured to generate electricity under the action of an air pressure difference; further comprising a wave frequency monitoring device, a drive device, a controller, and a first plate;

[0008] The first plate is disposed in the chamber, and the first plate is configured to be movable to change the capacity of the chamber;

[0009] The driving device is connected to the first plate and is used to drive the first plate to move;

[0010] The controller is electrically connected to the wave frequency monitoring device and the driving device respectively.

[0011] In some embodiments, the chamber is surrounded by a front wall, a second plate and a base; an air duct is provided between one end of the front wall and the second plate, and the air turbine power generation device is installed in the air duct; the second plate is installed at one end of the base, and an opening is provided between the other end of the base and the other end of the front wall.

[0012] In some embodiments, the driving device includes an airbag and an inflation and deflation device; one side of the airbag is fixedly connected to the first plate, and the other side is fixedly connected to the second plate, and the second plate is mounted on the seabed; the inflation and deflation device is electrically connected to the controller.

[0013] In some embodiments, an elastic component is further provided between the first plate and the second plate to cause the two plates to move closer to each other.

[0014] In some embodiments, the elastic component is a spring plate, and the spring plate is connected to the top of the first plate and the top of the second plate respectively.

[0015] In some embodiments, the front wall includes a horizontal section, an inclined section, and a vertical section connected in sequence; the air duct is located between the horizontal section and the first plate, and the opening is located between the vertical section and the base.

[0016] The present application has at least the following technical effects or advantages: by moving the first plate to change the capacity of the chamber, and then changing the fundamental frequency of the chamber to make the waves in the chamber resonate, thereby increasing the amplitude of the wave motion in the chamber, improving the power generation efficiency of the oscillating water column wave energy power generation device, and ensuring the efficient operation of the power generation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an existing oscillating water column wave energy power generation device;

[0018] Figure 2 This is a schematic structural diagram of an oscillating water column wave energy power generation device in one embodiment of the present application;

[0019] Figure 3 Schematic diagram of the structure of a driving device in one embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] Example 1

[0022] See also Figure 2 and Figure 3An oscillating water column wave energy power generation device includes a chamber 1, an air turbine generator 2, a wave frequency monitoring device 3, a drive device 4, and a controller 5. The air turbine generator 2 is connected to the chamber 1 and is configured to generate electricity under the influence of air pressure differences. The wave frequency monitoring device 3 is located on the sea surface outside the chamber 1 and is used to collect wave frequency.

[0023] The chamber 1 is surrounded by a front wall, a second plate 12, and a base 13. The front wall comprises a horizontal section 111, an inclined section 112, and a vertical section 113, all connected in sequence. The base 13 is horizontally positioned below the front wall 11, and the second plate 12 is vertically positioned at one end of the base 13. One side of the second plate 12 rests on the seabed 6, while the other side is provided with a first plate 14. The drive unit 4 is positioned between the first and second plates 14 and 12. An air duct 7 is provided between the horizontal section 111 and the second plate 12, within which the air turbine generator 2 is mounted. An opening 8 is provided between the vertical section 113 and the base 13, through which seawater is pumped into the chamber 1.

[0024] The drive device 4 includes an airbag 41 and an inflation / deflation device 42. One side of the airbag 4 is fixedly connected to the first plate 14, and the other side is fixedly connected to the second plate 12. Inflating or deflating the airbag 41 via the inflation / deflation device 42 changes the distance between the first plate 14 and the second plate 12 (since the second plate 12 is fixed to 6, this essentially drives the first plate 14 to move), thereby changing the capacity of the chamber 1. A spring plate 9 is also provided between the top of the first plate 14 and the top of the second plate 12. The spring plate 9 is configured to cause the two to move toward each other. Therefore, when the airbag 41 is deflated, the first plate 14 is moved closer to the second plate 12 under the action of the spring plate 9.

[0025] The controller 5 is electrically connected to the wave frequency monitoring device 3 and the inflation and deflation device 42 respectively.

[0026] Specifically, the oscillating water column wave energy power generation device is a nearshore, fixed oscillating buoy wave energy device that can be placed on a shore or breakwater. Furthermore, the base 13 is placed on the leveled seabed 6, and the second plate 12 is placed on the base 13. The second plate 12 can rest on strong bedrock or a treated concrete structure. The front wall, second plate 12, and the space above the internal water level form the air chamber of the oscillating water column wave energy power generation device. The interior of the air chamber must be properly sealed. Furthermore, all components must be protected from corrosion before entering the water to prevent corrosion damage. The front wall, second plate 12, and base 13 constitute the main structure of the oscillating water column wave energy power generation device. The height of the front wall must be determined based on historical water levels, ensuring that the water level remains in the middle of the front wall. Specifically, during low water levels, the water level must not fall below the bottom of the front wall, as this would render the wave energy device inoperable. During high water levels, the water level must not fall below the top of the front wall, as this would damage the internal wave energy devices. The up and down motion of the waves pushes the air in the air chamber to flow back and forth, thereby driving the air turbine generator 2 to generate electricity. This is the working principle of the oscillating water column wave energy generator.

[0027] The wave frequency monitoring device 3 is located at the front end of the oscillating water column wave energy power generation device. It can receive incoming wave parameters in real time and transmit these parameters to the controller 5. Preferably, the wave frequency monitoring device 3 is also electrically connected to the air turbine power generation device 2, which provides power to the wave frequency monitoring device 3, thus resolving power supply issues. The wave frequency monitoring device 3 is used to obtain wave frequency and can be a radar wave meter, a vibrating string wave meter, or the like.

[0028] During operation, the wave frequency monitoring device 3 sends the frequency of the wave to the controller 5. The controller 5 finds the position of the first plate 14 corresponding to the frequency according to the received wave frequency, and sends instructions to the inflation and deflation device 42. The inflation and deflation device 42 moves the first plate 14 to the position by inflation or deflation, thereby changing the capacity of the chamber, and then changing the fundamental frequency of the chamber to make the waves in the chamber resonate, thereby increasing the amplitude of the wave motion in the chamber, improving the power generation efficiency of the oscillating water column wave energy power generation device, and ensuring the efficient operation of the power generation equipment.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An oscillating water column wave energy power generation device comprising a chamber and an air turbine power generation device, wherein the air turbine power generation device is connected to the chamber and is configured to generate electricity under the action of an air pressure difference; characterized in that: Also included is a wave frequency monitoring device, a driving device, a controller, and a first plate; The first plate is disposed in the chamber, and the first plate is configured to be movable to change the capacity of the chamber; The driving device is connected to the first plate and is used to drive the first plate to move; The controller is electrically connected to the wave frequency monitoring device and the driving device respectively.

2. The oscillating water column wave energy power generation device according to claim 1, characterized in that: The chamber is surrounded by a front wall, a second plate and a base, and the second plate is installed on the seabed; an air duct is provided between one end of the front wall and the second plate, and the air turbine power generation device is installed in the air duct; the second plate is installed at one end of the base, and an opening is provided between the other end of the base and the other end of the front wall.

3. The oscillating water column wave energy power generation device according to claim 2, characterized in that: The driving device includes an airbag and an inflation and deflation device; one side of the airbag is fixedly connected to the first plate, and the other side is fixedly connected to the second plate; the inflation and deflation device is electrically connected to the controller.

4. The oscillating water column wave energy power generation device according to claim 3, characterized in that: An elastic component is further provided between the first plate and the second plate to make the two plates tend to approach each other.

5. The oscillating water column wave energy power generation device according to claim 4, characterized in that: The elastic component is a spring plate, and the spring plates are respectively connected to the top of the first plate and the top of the second plate.

6. The oscillating water column wave energy power generation device according to any one of claims 2 to 5, characterized in that: The front wall includes a horizontal section, an inclined section, and a vertical section that are connected in sequence; the air duct is located between the horizontal section and the first plate, and the opening is located between the vertical section and the base.

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