Wave energy harvesting structure combining cylinder and plane

Abstract

The application relates to a cylindrical and planar combined wave energy collection structure, which specifically comprises: a top cover and a bottom cover fixedly installed at the upper and lower ends of a cylinder, a central hole of the top cover and the bottom cover is fixedly connected with a rotating shaft, and a linear bearing is installed on the shaft; the linear bearing is fixedly connected with a buoyant block, and the buoyant block and a sealing cover form a sealed cavity; an inner cylinder with horizontal and vertical electrode structures is fixedly installed at the bottom of the sealed cavity, an outer cylinder with horizontal and vertical friction power generation structures is fixedly installed at the top of a spring, and the bottom of the spring is fixedly installed at the bottom of the sealed cavity. Advantages are that: the overall structure can be fixedly installed on a floating target such as a buoy, the cylindrical structure not only converts the irregular movement of sea waves into single-degree-of-freedom movement along the axial direction, but also has good self-protection capability, and the working life of the structure is increased.

Description

Technical Field

[0001] This invention relates to a wave energy harvesting structure combining a cylinder and a plane, belonging to the field of wave energy harvesting technology. Background Technology

[0002] Despite decades of development, traditional electromagnetic ocean energy generation equipment still faces limitations in wave energy harvesting. The irregular motion and low frequency of waves severely hinder the widespread adoption of such equipment. Furthermore, the generally high equipment and installation / maintenance costs directly restrict the application of wave energy generation equipment based on electromagnetic principles.

[0003] Nano-triboelectric generators have attracted widespread attention across various industries due to their numerous application advantages. A novel energy harvesting technology based on triboelectricity and electrostatic induction, nano-triboelectric generators are characterized by their ability to effectively utilize low-frequency mechanical energy for power generation. This provides a new approach to ocean energy harvesting and is an indispensable part of the future recyclable energy field.

[0004] Nano-triboelectric generators are characterized by their simple structure and low cost, which makes them highly scalable. They also have low overall structural mass and are easy to install and maintain. They have already been applied in some self-powered fields and will provide more solutions in the future in fields such as marine engineering, machinery manufacturing, rail transportation, and aerospace. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a vertical contact separation wave energy harvesting structure that is inexpensive, simple in structure, stable and reliable, has a long working life and can be easily installed.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A wave energy harvesting structure combining a cylinder and a plane comprises: a top cover (1) and a bottom cover (6) fixedly installed at the upper and lower ends of the cylinder (2); a shaft (10) fixedly installed in the center hole of the top cover (1) and the bottom cover (6); circular holes for seawater and air to freely enter and exit are provided around the top cover (1) and the bottom cover (6); a linear bearing (7) is installed on the shaft (10); the linear bearing (7) is fixedly connected to the buoyancy block (5); the buoyancy block (5) and the sealing cover (9) form a sealed cavity; an inner cylinder (403) with horizontal and vertical electrode structures is fixedly installed at the bottom of the sealed cavity. The outer wall of the inner cylinder (403) is bonded with a third vertical friction layer (402), and the upper surface of the inner cylinder (403) is bonded with a third horizontal friction layer (401). The outer cylinder (301) with horizontal and vertical friction power generation structure is fixedly installed on the top of the spring (8). The inner wall of the outer cylinder (301) is bonded with a first vertical friction layer (304) and a second vertical friction layer (305). The top of the inner wall of the outer cylinder (301) is bonded with a first horizontal friction layer (302) and a second horizontal friction layer (303). The bottom of the spring (8) is fixedly installed at the bottom of the sealed cavity.

[0008] The advantages of this invention are: the overall structure can be fixedly installed on buoys and other marine targets; the cylindrical structure not only transforms the irregular motion of ocean waves into a single degree of freedom motion along the axial direction, but also has excellent self-protection capabilities, increasing the working life of the structure. Attached Figure Description

[0009] Figure 1 The cross-section of the wave energy harvesting structure is shown;

[0010] Figure 2 Showing a front view of the top cover.

[0011] Figure reference numerals:

[0012] 1. Top cover

[0013] 2. Cylinder

[0014] 301 outer cylinder

[0015] 302 First Horizontal Friction Layer

[0016] 303 Second Horizontal Friction Layer

[0017] 304 First Vertical Friction Layer

[0018] 305 Second Vertical Friction Layer

[0019] 401 Third Horizontal Friction Layer

[0020] 402 Third Vertical Friction Layer

[0021] 403 Inner Tube

[0022] 5 buoyancy blocks

[0023] 6. Bottom Cover

[0024] 7 Linear bearings

[0025] 8 springs

[0026] 9. Sealing cap

[0027] 10 axes Detailed Implementation

[0028] Figure 1 The diagram shows a cross-section of a wave energy harvesting structure. This embodiment describes a wave energy harvesting structure combining a cylinder and a plane, specifically comprising: a top cover 1 and a bottom cover 6 fixedly mounted at the upper and lower ends of a cylinder 2; a shaft 10 fixedly mounted in the center hole of the top cover 1 and bottom cover 6; circular holes around the top cover 1 and bottom cover 6 for free entry and exit of seawater and air; a linear bearing 7 mounted on the shaft 10; the linear bearing 7 fixedly connected to a buoyancy block 5; the buoyancy block 5 and a sealing cover 9 forming a sealed cavity; and a horizontal and vertical electric current device fixedly mounted at the bottom of the sealed cavity. The inner cylinder 403 has a polar structure, with a third vertical friction layer 402 bonded to the outer wall of the inner cylinder 403 and a third horizontal friction layer 401 bonded to the upper surface of the inner cylinder 403; the outer cylinder 301 with horizontal and vertical friction power generation structures is fixedly installed on the top of the spring 8, with a first vertical friction layer 304 and a second vertical friction layer 305 bonded to the inner side wall of the outer cylinder 301, and a first horizontal friction layer 302 and a second horizontal friction layer 303 bonded to the top of the inner side of the outer cylinder 301; the bottom of the spring 8 is fixedly installed at the bottom of the sealed cavity.

[0029] Figure 2 The diagram shows a front view of the structure of the top cover 1, which is exactly the same as the bottom cover 6. Except for the circular hole in the center for mounting the shaft 10, there are circular holes on all four sides to allow seawater and air to enter and exit freely.

[0030] When the wave energy harvesting structure is in operation, it will be fixed on a floating platform or other water surface platform, with part of the structure submerged in seawater. The buoyancy block 5 can keep the internal structure on the water surface under the action of seawater. The rise and fall of the waves will cause the entire internal structure to rise and fall along the axis. This structure can lift the power generation structure away from the water surface.

[0031] Under the combined action of inertia and spring 8, the outer cylinder 301 achieves periodic up-and-down movement. The friction layer on the outer cylinder 301 and the friction layer installed on the inner cylinder 403 will periodically contact and separate, generating electricity through the coupling effect of friction electrification and electrostatic induction.

Claims

1. A wave energy harvesting structure combining a cylinder and a plane, specifically comprising: a top cover (1) and a bottom cover (6) fixedly installed at the upper and lower ends of the cylinder (2); a shaft (10) fixedly installed in the center hole of the top cover (1) and the bottom cover (6); circular holes for seawater and air to freely enter and exit are provided around the top cover (1) and the bottom cover (6); a linear bearing (7) is installed on the shaft (10); the linear bearing (7) is fixedly connected to a buoyancy block (5); the buoyancy block (5) and the sealing cover (9) form a sealed cavity; an inner cylinder (403) with horizontal and vertical electrode structures is fixedly installed at the bottom of the sealed cavity; the inner cylinder ( 403) A third vertical friction layer (402) is bonded to the outer side of the inner cylinder (403), and a third horizontal friction layer (401) is bonded to the upper surface of the inner cylinder (403); the outer cylinder (301) with horizontal and vertical friction power generation structures is fixedly installed on the top of the spring (8), the inner sidewall of the outer cylinder (301) is bonded with a first vertical friction layer (304) and a second vertical friction layer (305), the top of the inner sidewall of the outer cylinder (301) is bonded with a first horizontal friction layer (302) and a second horizontal friction layer (303), and the bottom of the spring (8) is fixedly installed at the bottom of the sealed cavity. The characteristic feature is that... There is a gap between the outer cylinder (301) and the spring (8) and the inner side of the sealing cover (9); the first horizontal friction layer (302), the first vertical friction layer (304), the third horizontal friction layer (401) and the third vertical friction layer (402) are made of copper; the second horizontal friction layer (303) and the second vertical friction layer (305) are made of polytetrafluoroethylene (PTFE).

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