A shore-based array wave energy power generation device with nested power generation

Abstract

The present invention discloses a shore-based array wave energy power generation device in a nested power generation form, which belongs to the technical field of wave energy power generation; it comprises a breakwater, the edge of which is provided with a plurality of arc-shaped banks, each of which is provided with a power generation device, the power generation device comprises an outer air chamber and an inner air chamber which are nested in sequence from the outside to the inside, the outer air chamber is connected to the arc-shaped bank through a slide rail, and the bottom of the inner air chamber is fixedly connected to the arc-shaped bank through a connecting rod. The present invention adopts the above structure, the breakwater adopts an arc-shaped design, which provides a wave gathering effect for the array wave energy device, improves the power generation efficiency of the wave energy device, and can also reduce the impact of waves on the shore breakwater; the outer air chamber can be raised and lowered to avoid collision with the inner air chamber, the outer air chamber performs vertical swing motion to generate electricity with a turbine and a linear motor, and the resonance frequency of the internal gas is controlled by setting the inner air chamber to improve the vertical swing motion efficiency, thereby increasing the power generation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of wave energy power generation, and in particular to a shore-based array wave energy power generation device in a nested power generation form. Background Art

[0002] With the development of the times, the disadvantages of traditional fossil energy are becoming more and more obvious, and the use of renewable energy is urgent. As one of the representatives of renewable energy, wave energy has the characteristics of large reserves, wide distribution and high energy flow density, and has broad application prospects. At present, typical wave energy devices include wave crossing devices, oscillating float devices and oscillating water column devices. Among them, the oscillating float device and oscillating water column device have been more successful.

[0003] However, due to extreme weather, extremely uneven distribution of sea surface waves and limitations of existing technologies, single wave energy devices have low survival reliability and low conversion efficiency. Therefore, it is urgent to integrate and transform existing wave energy devices and combine them with engineering equipment that has wave-breaking, wave-gathering and protection functions.

[0004] However, the wave energy of the current integrated system is mainly concentrated in turbine power generation, and the utilization rate is still low, the power generation efficiency is low, and it cannot meet the large-scale power generation needs. Summary of the invention

[0005] The purpose of the present invention is to provide a shore-based array wave energy power generation device in a nested power generation form, including a plurality of wave energy power generation devices arranged in a breakwater. The breakwater adopts an arc-shaped design, which provides a wave gathering effect for the wave energy device, improves the power generation efficiency of the wave energy device, and can also reduce the impact of waves on the shore breakwater. The wave energy power generation device includes an inner and outer air chamber. The outer air chamber is affected by waves to perform vertical motion and can additionally generate linear motor power, thereby increasing the power generation. The inner air chamber combines with the outer air chamber to form a resonance effect to increase the airflow input to the turbine generator, which also improves the power generation efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides a nested power generation type shore-based array wave energy power generation device, including a breakwater, wherein a plurality of arc-shaped banks are arranged at the edge of the breakwater, and a power generation device is arranged in each of the arc-shaped banks, and each of the power generation devices includes an outer air chamber and an inner air chamber nested in sequence from the outside to the inside, the outer air chamber is connected to the arc-shaped bank through a slide rail, and the bottom of the inner air chamber is fixedly connected to the arc-shaped bank through a connecting rod.

[0007] Preferably, the outer air chamber is configured as a cylindrical structure with an opening at the bottom, a vent is provided in the top center of the outer air chamber, the outer air chamber performs vertical swing motion under the constraint of the slide rail, a limiter is provided in the slide rail, the vent is connected to a turbine generator, and a linear generator is provided in the slide rail.

[0008] Preferably, the inner air chamber is arranged at the center of the outer air chamber, the inner air chamber is arranged as a cylindrical structure with openings at both ends, the bottom of the inner air chamber is arranged as a water inlet, the top of the inner air chamber is arranged as an exhaust port, and the connecting rod is arranged as two brackets, which are respectively connected to the two sides of the bottom of the inner air chamber.

[0009] Preferably, the limiter in the slide rail is configured as an adjustable structure, and the limiter is used to adjust the range of the vertical swing movement of the outer air chamber.

[0010] Preferably, the material of the outer air chamber and the inner air chamber is set to metal, and the surfaces of the outer air chamber and the inner air chamber are coated with protective paint.

[0011] Preferably, the cylindrical structures of the inner air chamber and the outer air chamber are configured as circular columns or elliptical columns.

[0012] Therefore, the present invention adopts the above-mentioned nested power generation form shore-based array wave energy power generation device, which has the following advantages:

[0013] In the present invention, the outer air chamber is configured as a structure that performs vertical motion with the waves. In addition to conventional turbine power generation, linear motor power generation can be additionally performed, thereby improving the utilization efficiency of wave energy. The power generation device is also configured as a structure of an inner air chamber and an outer air chamber. The power generation device adopts a multi-air chamber structure, which successfully broadens the effective power generation frequency band. A resonant environment is formed inside the power generation device through the inner air chamber and the outer air chamber, so that the gas inside the outer air chamber can pass through the turbine generator faster, thereby improving the power generation efficiency. Setting up multiple power generation devices can improve the utilization rate of wave energy and the total amount of power generation. The external air chamber can be raised and lowered, and the draft can be adjusted according to the complex changes in sea conditions to adapt to different sea areas, control the resonant frequency, and effectively broaden the application scenarios.

[0014] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a general schematic diagram of a shore-based array wave energy power generation device of a nested power generation type according to the present invention;

[0016] Figure 2 A schematic diagram of a breakwater of a shore-based array wave energy power generation device in a nested power generation form according to the present invention;

[0017] Figure 3 A schematic diagram of the heave motion of a shore-based array wave energy power generation device in a nested power generation form of the present invention;

[0018] Figure 4 It is a rear view of a shore-based array wave energy power generation device of a nested power generation type according to the present invention;

[0019] Figure numerals: 1. breakwater; 2. power generation device; 3. outer air chamber; 4. inner air chamber; 5. slide rail; 6. connecting rod; 7. vent. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. The specific model specifications need to be selected and determined according to the actual specifications of the device, and the specific selection calculation structure adopts the existing technology in the field, so it will not be described in detail.

[0021] Example

[0022] like Figure 1-Figure 4 The present invention provides a shore-based array wave energy power generation device in a nested power generation form, comprising a breakwater 1, a plurality of arc-shaped banks are arranged at the edge of the breakwater 1, a power generation device 2 is arranged in each arc-shaped bank, and the power generation device 2 is arranged in the arc-shaped bank. The arc-shaped bank can play a good wave gathering role, so that the wave energy is concentrated in the power generation device 2, thereby improving the power generation efficiency;

[0023] Each power generation device 2 includes an outer air chamber 3 and an inner air chamber 4 which are nested in sequence from the outside to the inside. The outer air chamber 3 is arranged as a cylindrical structure with an opening at the bottom. The bottom opening facilitates the inflow of wave energy. The outer air chamber 3 is connected to the arc-shaped shore through a slide rail 5. A linear generator is arranged in the slide rail 5. The outer air chamber 3 performs vertical swing motion through waves under the constraint of the slide rail 5, and generates electricity through the vertical swing motion by the linear motor. A limiter is arranged in the slide rail 5. The limiter in the slide rail 5 is arranged as an adjustable structure, which can adjust the range of the vertical swing motion of the outer air chamber 3, thereby constraining the up and down motion range of the outer air chamber 3 to avoid collision between the inner air chamber 4 and the outer air chamber 3. A vent hole 7 is arranged at the top center of the outer air chamber 3, and the vent hole 7 is connected to the outer air chamber 3. A turbine generator is connected, and exhaust is discharged outwardly through the vent hole 7 during the process of wave energy inflow to perform turbine power generation. The bottom of the inner air chamber 4 is fixedly connected to the arc-shaped bank through the connecting rod 6, so that the inner air chamber 4 is fixed in the center of the outer air chamber 3. The connecting rod 6 is set as two brackets, which are respectively connected to the two sides of the bottom of the inner air chamber 4, which can play a better fixing role. The inner air chamber 4 is set as a cylindrical structure with openings at both ends. The bottom of the inner air chamber 4 is set as a water inlet, and the top of the inner air chamber 4 is set as an exhaust port. In the process of wave surging, the bottom of the inner air chamber 4 will also be squeezed, and the gas will be discharged from the exhaust port to the outer air chamber 3, thereby forming a resonance effect in the outer air chamber 3, thereby improving the power generation efficiency of the turbine generator.

[0024] The cylindrical structure of the inner air chamber 4 and the outer air chamber 3 is set to a circular column or an elliptical column, and a suitable structure is adopted according to the specific requirements of the use environment. The material of the outer air chamber 3 and the inner air chamber 4 is set to metal, and the surface of the outer air chamber 3 and the inner air chamber 4 is coated with a protective paint. The protective paint can protect the device from reducing corrosion and thereby prolonging the use time of the device.

[0025] In the specific use process, according to the local wave environment information, choose a suitable location to install the power generation device. During the wave energy generation, the outer air chamber has two forms of power generation. One is that the internal air is pressed out by the waves to form an airflow that enters the turbine generator from the vent to generate electricity. The other is the linear motor generated by the heaving motion of the outer air chamber. The bottom of the inner air chamber will also be pressed by the waves to form an airflow that enters the outer air chamber. The airflow of the inner air chamber resonates with the inside of the outer air chamber, thereby increasing the air output and frequency of the vent, thereby improving the power generation efficiency. The calculation process of the power generation efficiency is as follows:

[0026] First calculate the power generation:

[0027] ;

[0028] The power generation efficiency is

[0029] ;

[0030] In the above formula, n To obtain the number of cycles of continuous data, T is the wave period, P (t) is the pressure inside the air chamber (relative to atmospheric pressure), Q (t) is the air volume flow rate in the air chamber per unit time, F (t) is the force during the heave motion of the wave energy device, V (t) is the speed of the wave energy device during the heaving motion, E 1 is the power generation energy of the oscillating buoy wave energy device, E 2 is the power generation energy of the oscillating water column wave energy device, E w is the energy of the incident wave.

[0031] According to the above calculation formula, it can be clearly seen that the device of the present invention improves the utilization efficiency of wave energy and increases the power generation.

[0032] Therefore, the present invention adopts a nested power generation form of shore-based array wave energy power generation device, including a plurality of wave energy power generation devices arranged in a breakwater. The breakwater adopts an arc-shaped design, which provides a wave gathering effect for the wave energy device, improves the power generation efficiency of the wave energy device, and can also reduce the impact of waves on the shore breakwater. The wave energy power generation device includes an inner and outer air chamber. The outer air chamber performs vertical swing motion and can additionally perform linear motor power generation, thereby increasing the power generation. The inner air chamber combines with the outer air chamber to form a resonance effect to increase the airflow input to the turbine generator, thereby also improving the power generation efficiency.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A nested power generation shore-based array wave energy power generation device, characterized in that: It includes a breakwater, the edge of which is provided with a plurality of arc-shaped banks, each of which is provided with a power generation device, each of which includes an outer air chamber and an inner air chamber which are nested in sequence from the outside to the inside, the outer air chamber is connected to the arc-shaped bank through a slide rail, and the bottom of the inner air chamber is fixedly connected to the arc-shaped bank through a connecting rod; The outer air chamber is configured as a cylindrical structure with an opening at the bottom, a vent hole is provided at the top center of the outer air chamber, the outer air chamber performs vertical swing motion under the constraint of the slide rail, a limiter is provided in the slide rail, the vent hole is connected to a turbine generator, and a linear generator is provided in the slide rail; The inner air chamber is arranged at the center of the outer air chamber, the inner air chamber is arranged as a cylindrical structure with openings at both ends, the bottom of the inner air chamber is arranged as a water inlet, the top of the inner air chamber is arranged as an exhaust port, and the connecting rod is arranged as two brackets, which are respectively connected to the two sides of the bottom of the inner air chamber.

2. A nested power generation shore-based array wave energy power generation device according to claim 1, characterized in that: The limiter in the slide rail is configured as an adjustable structure, and the limiter is used to adjust the range of the vertical swing movement of the outer air chamber.

3. A nested power generation shore-based array wave energy power generation device according to claim 2, characterized in that: The material of the outer air chamber and the inner air chamber is set to metal, and the surfaces of the outer air chamber and the inner air chamber are coated with protective paint.

4. A nested power generation shore-based array wave energy power generation device according to claim 3, characterized in that: The cylindrical structures of the inner air chamber and the outer air chamber are configured as circular columns or elliptical columns.

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