A blade-type high-efficiency wave energy power generation device

Abstract

This invention discloses a blade-shaped high-efficiency wave energy generation device, comprising a wave-absorbing float, which is integrally blade-shaped, including a flat plate portion and an arc-shaped portion disposed on the back of the flat plate portion; the flat plate portion of the wave-absorbing float is used to drive the power generation equipment to perform work; a support truss is connected and installed at one end in the arc-shaped portion, and the other end is hinged to a support base. Under the action of an incident wave, the blade-shaped wave-absorbing float receives the excitation of the incident wave and undergoes pitching motion, driving the hydraulic cylinder to perform work. At the same time, the wave-absorbing float begins to rotate around the hinged rotation support point. Due to its arc-shaped back, the pitching does not generate waves and does not produce radiation damping to dissipate energy; secondly, because the blade-shaped wave-absorbing float is lightweight, it requires less energy to rotate. Most of the work done by the wave-acting float is captured by the PTO energy conversion system, improving the energy capture efficiency of the wave energy device.

Description

Technical Field

[0001] This invention relates to the field of wave energy generation, and specifically to a blade-type zero-mass inertial high-efficiency wave energy generation device. Background Technology

[0002] Based on the high-quality energy characteristics and development advantages of wave energy, the duck and eagle wave energy devices (CN102661231A, CN111058989A) developed by the Guangzhou Institute of Energy Research, Chinese Academy of Sciences, have demonstrated high capture characteristics in recent years. However, as... Figure 1 and Figure 2 As shown, its wave-absorbing buoy is huge and has a large inertial mass. It has a poor response to small-amplitude and small-period waves, and consumes a large amount of wave excitation force as work during wave motion, resulting in a small effective work of captured energy conversion. Summary of the Invention

[0003] Based on the shortcomings of traditional wave energy devices, such as the large inertia of the absorbing float leading to slow response and low capture efficiency for small-wave height and short-period waves, and the fact that the absorbing float needs to consume more wave excitation force to do work during motion, resulting in low capture efficiency, this invention aims to design a blade-shaped "zero-mass inertia" high-efficiency wave energy generation device to improve the sensitivity of wave energy devices to small wave motion and improve the capture efficiency of wave energy devices.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] A blade-type, zero-mass, inertial, high-efficiency wave energy generation device includes:

[0006] The wave-absorbing float is blade-shaped and includes a flat plate portion and an arc portion disposed on the back of the flat plate portion; the flat plate portion is used to drive the power generation equipment to perform work.

[0007] A support truss, one end of which is connected and installed in the arc section, and the other end is hinged to the support base.

[0008] Furthermore, the blade-type zero-mass inertial high-efficiency wave energy generation device also includes:

[0009] An underwater buoyancy adjustment ball is installed at the bottom of the arc-shaped portion.

[0010] Furthermore, the power generation equipment is a PTO energy conversion system.

[0011] Furthermore, the PTO energy conversion system includes a hydraulic cylinder, which is driven by the floating plate section to perform work.

[0012] Furthermore, the supporting truss is provided with two or more trusses.

[0013] Compared with the prior art, the advantages of this invention are as follows:

[0014] The present invention provides a blade-shaped "zero-mass inertia" high-efficiency wave energy generation device, which can reduce the material used in the wave-absorbing float, reduce motion inertia, respond more sensitively to small wave conditions and sea conditions, and has higher wave-to-electric conversion efficiency. The wave energy device is more economical and has a lower cost. Attached Figure Description

[0015] Figure 1 Photograph of an existing ducktail wave energy device's wave-absorbing buoy;

[0016] Figure 2 Photograph of the existing Eagle Wave Energy Device's wave-absorbing buoy;

[0017] Figure 3 A schematic diagram of the structure of the blade-type zero-mass inertia high-efficiency wave energy generation device provided in an embodiment of the present invention;

[0018] In the diagram: 1. Wave-absorbing float; 2. Support truss; 3. Support base; 4. PTO energy conversion system; 5. Underwater buoyancy adjustment ball; 11. Flat plate section of wave-absorbing float; 12. Arc section; 31. Hinged rotating support point. Detailed Implementation

[0019] Example:

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The technical solution of this invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] See Figure 3 As shown, the blade-type zero-mass inertia high-efficiency wave energy generation device provided in this embodiment mainly includes a wave-absorbing float 1, a supporting truss 2, a supporting base 3, and a power generation device. In this embodiment, the power generation device adopts a PTO energy conversion system 4, which mainly includes a hydraulic cylinder.

[0022] The wave-absorbing float 1 is blade-shaped and includes a wave-absorbing float plate 11 and an arc-shaped portion 12 disposed on the back of the float plate 11. The wave-absorbing float plate 11 is used to drive the PTO energy conversion system 4 to do work. One end of the support truss 2 is connected and installed in the arc-shaped portion 12, and the other end is hinged to the support base 3. The hinge point is the hinged rotation support point 31.

[0023] This embodiment provides a blade-shaped "zero-mass inertia" high-efficiency wave energy generation device. Under the action of incident waves, the wave-absorbing float responds rapidly to motion, and is more sensitive to small wave conditions. The blade-shaped wave-absorbing float receives excitation from the incident wave and undergoes pitching motion, driving the hydraulic cylinder to do work. At the same time, the wave-absorbing float begins to rotate around the hinged rotating support point. Due to its arc shape on the back, the pitching does not generate waves and does not produce radiation damping to dissipate energy. Secondly, because the blade-shaped wave-absorbing float is lightweight, it requires less energy to rotate. Most of the work done by the wave-acting float is captured by the PTO energy conversion system, improving the energy capture efficiency of the wave energy device.

[0024] As a preferred embodiment of the blade-type zero-mass inertial high-efficiency wave energy generation device provided, the device further includes an underwater buoyancy adjustment ball 5, which is installed at the bottom of the arc portion 12 to facilitate adjustment of the buoyancy state of the blade-type wave-absorbing float 1.

[0025] In one specific embodiment, the aforementioned support truss 2 is provided with two or more trusses to ensure the stability of the blade-shaped wave-absorbing float 1 when it rotates.

[0026] The above embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made based on the essence of the content of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A blade-type high-efficiency wave energy generation device, characterized in that, include: The radar-absorbing float is blade-shaped in general, including a flat plate portion and an arc portion disposed on the back of the flat plate portion. The flat plate of the wave-absorbing float is used to drive the power generation equipment to do work. A support truss, one end of which is connected and installed in the arc section, and the other end is hinged to the support base; Also includes: An underwater buoyancy regulating ball is installed at the bottom of the arc-shaped portion; The power generation equipment is a PTO energy conversion system; The PTO energy conversion system includes a hydraulic cylinder, which is driven by the wave-absorbing float plate to perform work.

2. The blade-type high-efficiency wave energy generation device as described in claim 1, characterized in that, The supporting truss has two or more trusses.

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