Kinetic energy recovery structure of wind energy and wave energy integrated power generation system

Abstract

The utility model discloses a kinetic energy recovery structure of a wind energy and wave energy integrated power generation system, which comprises a wind turbine, the bottom of the wind turbine is fixedly connected with a tower structure, and the outer surface of the tower structure close to the bottom is fixedly connected with a plurality of transverse support rods and inclined support rods. The ends, away from the tower structure, of the inclined supporting rods are fixedly connected with a buoyancy cylinder and a liquid ballast tank, the buoyancy cylinder is fixedly connected with the top of the liquid ballast tank, a ventilation hole is formed in the position, close to the center, of the top of the buoyancy cylinder, and a communicating hole is formed in the outer surface of the liquid ballast tank. According to the floating foundation, the additional mass and additional damping of the wind turbine are increased through the arrangement of the wind turbine and the buoyancy cylinder, the internal mechanism of the buoyancy cylinder and the liquid ballast tank, the movement response of the floating foundation can be reduced, and therefore the overall movement stability is guaranteed, and the comprehensive development capacity of offshore wind energy and wave energy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of marine energy development, in particular to a kinetic energy recovery structure of a wind energy and wave energy integrated power generation system. Background Art

[0002] With the continuous growth of global energy demand and the increasing attention to environmental protection, marine renewable energy, as a clean and efficient form of energy, has received extensive attention and research. Marine energy mainly includes wind energy, wave energy, tidal energy, etc. Among them, marine wind energy and wave energy are highly favored because of their abundant resources and wide distribution.

[0003] At present, the development of existing wind energy and wave energy is mostly a single energy source independent development method, but there are certain similarities in the spatial distribution of marine wind energy and wave energy resources. This means that when developing single marine wind energy, because wind turbines and blades are usually installed on buoys, they are greatly affected by waves and are prone to produce large motion responses, affecting the power generation efficiency and safety of the wind turbines. In wave energy power generation devices, the movement of waves is directly used for energy conversion, but when operating in the ocean, it will be affected by both waves and wind, and the stability of the device will be greatly affected. Utility Model Content

[0004] The utility model aims to solve the problems of independent development of a single energy source, poor operation stability and low energy utilization efficiency in the prior art, and proposes a kinetic energy recovery structure for a wind and wave energy integrated power generation system.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A kinetic energy recovery structure of a wind and wave energy integrated power generation system comprises a wind turbine, wherein the bottom of the wind turbine is fixedly connected to a tower structure, a plurality of transverse support rods and oblique support rods are fixedly connected to the outer surface of the tower structure near the bottom, a buoyancy cylinder and a ballast tank are fixedly connected to one end of the oblique support rod away from the tower structure, the buoyancy cylinder is fixedly connected to the top of the ballast tank, a ventilation hole is provided near the center of the top of the buoyancy cylinder, a connecting hole is provided on the outer surface of the ballast tank, and a hollow hole is provided near the bottom of the outer surface of the buoyancy cylinder, an oscillating water column wave energy conversion device is installed in the buoyancy cylinder, and is composed of a turbine power generation assembly and a wave energy capture system, wherein the turbine power generation assembly is composed of an air turbine generator and The Welsh air turbine consists of a vertical channel on the upper part of the wave energy capture system, which is connected to the installation channel and the turbine power generation component through four air channels. The lower part is an oscillating water column chamber, which is connected to the external seawater through a permeable hole. The oscillating water column wave energy device drives the water column in the air chamber to oscillate up and down through waves, and the compressed air produces a reciprocating air flow. At the same time, it is necessary to select wind turbine parameters according to the wind resource characteristics of the installation site, optimize the main dimensions of the wind turbine and semi-submersible support foundation according to the aerodynamic design load of the wind turbine and the wave environmental load, and optimize the size of the oscillating water column chamber and the turbine power generation component according to the wave statistical characteristics of the installation site to ensure that the wave energy device can resonate near the main wave frequency and ensure the maximum wave energy capture capability.

[0007] Preferably, an inner hollow float is fixedly connected to the interior of the buoyancy cylinder, an air channel is opened on the outer surface of the inner hollow float near the top, a vertical channel is opened near the top of the air channel of the inner hollow float, and an installation channel is opened near the top of the vertical channel of the inner hollow float.

[0008] Preferably, the inner side of the buoyancy cylinder and the outer surface of the inner hollow buoy form an oscillating water column chamber, and the bottom of the oscillating water column chamber is connected to the outside through a permeable hole.

[0009] Preferably, a bottom support rod is fixedly connected between two adjacent ballast tanks, and a transverse support rod is also fixedly connected between two adjacent buoyancy cylinders.

[0010] Preferably, a protective component is fixedly connected to the inner side of the mounting hole, a turbine power generation component is connected to the middle of the protective component, the protective components are distributed at the top and bottom of the turbine power generation component, and the top of the mounting hole is connected to the ventilation hole.

[0011] Preferably, a gently sloping contraction water channel structure is installed at the bottom of the oscillating water column chamber, and the portion of the oscillating water column chamber close to the top is connected to the inner hollow buoy, and the ballast liquid tank can rotate and generate electricity under the action of the reciprocating air flow.

[0012] Compared with the prior art, the utility model provides a kinetic energy recovery structure of a wind energy and wave energy integrated power generation system, which has the following beneficial effects:

[0013] 1. The kinetic energy recovery structure of the wind and wave energy integrated power generation system realizes the joint development of offshore wind energy and wave energy by providing a wind turbine and a buoyancy tube, thereby improving the development and utilization efficiency of offshore renewable energy. The internal structure of the buoyancy tube and the ballast tank increase the additional mass and additional damping of the wind turbine, which helps to reduce the motion response of the floating foundation, thereby ensuring the overall motion stability and improving the comprehensive development capability of offshore wind energy and wave energy.

[0014] 2. The kinetic energy recovery structure of the wind and wave energy integrated power generation system is provided with a buoyancy cylinder and a ballast tank. The opening of the connecting holes and the hollow holes can not only allow waves to enter the inner hollow buoy to match the turbine power generation assembly to generate electricity, but also weaken the horizontal wave load and moment of the floating foundation, and improve the stability of the integrated structure in the longitudinal and longitudinal directions. At the same time, the hollow structure is arranged in a 360-degree annular manner to realize the absorption of wave energy in all directions by the wave energy device. The connecting holes are opened on the ballast tank to realize the exchange of liquid inside the ballast tank with external seawater. Energy dissipation is generated when the fluid passes through the hole structure, which can not only reduce the wave load but also help to improve the overall movement stability of the integrated equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a kinetic energy recovery structure of a wind energy and wave energy integrated power generation system proposed by the utility model;

[0016] Figure 2 This is a front schematic diagram of a kinetic energy recovery structure of a wind energy and wave energy integrated power generation system proposed by the utility model;

[0017] Figure 3 A schematic diagram of an oscillating water column wave energy power generation device of a kinetic energy recovery structure of a wind energy and wave energy integrated power generation system proposed in the utility model;

[0018] Figure 4 A schematic cross-sectional view of a buoyancy cylinder of a kinetic energy recovery structure of a wind and wave energy integrated power generation system proposed in the utility model;

[0019] Figure 5 The utility model provides a schematic cross-sectional view of an oscillating water column wave energy power generation device of a kinetic energy recovery structure of a wind energy and wave energy integrated power generation system.

[0020] In the figure: 1. Wind turbine; 2. Tower structure; 3. Buoyancy cylinder; 4. Horizontal support rod; 5. Oblique support rod; 6. Bottom support rod; 7. Ballast tank; 8. Ventilation hole; 9. Connecting hole; 10. Air hole; 11. Inner hollow buoy; 12. Air channel; 13. Oscillating water column chamber; 14. Vertical channel; 15. Turbine power generation assembly; 16. Protection assembly; 17. Installation channel. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] Reference Figure 1-5A kinetic energy recovery structure of a wind and wave energy integrated power generation system comprises a wind turbine 1, a tower structure 2 is fixedly connected to the bottom of the wind turbine 1, a plurality of transverse support rods 4 and oblique support rods 5 are fixedly connected to the outer surface of the tower structure 2 near the bottom, a buoyancy cylinder 3 and a ballast tank 7 are fixedly connected to the end of the oblique support rod 5 away from the tower structure 2, an oscillating water column chamber 13 is formed by the inner side of the buoyancy cylinder 3 and the outer surface of an inner hollow buoy 11, a gently sloping contraction water channel structure is installed at the bottom of the oscillating water column chamber 13, a portion of the oscillating water column chamber 13 near the top is connected to the inner hollow buoy 11, the ballast tank 7 can rotate to generate electricity under the action of reciprocating air flow, the bottom of the oscillating water column chamber 13 is connected to the outside through a permeable hole 10, a bottom support rod 6 is fixedly connected between two adjacent ballast tanks 7, and two adjacent buoyancy cylinders 3 are also fixedly connected There is a transverse support rod 4, the buoyancy cylinder 3 is fixedly connected to the top of the ballast liquid tank 7, a ventilation hole 8 is opened near the center of the top of the buoyancy cylinder 3, a connecting hole 9 is opened on the outer surface of the ballast liquid tank 7, and a hollow hole 10 is opened near the bottom of the outer surface of the buoyancy cylinder 3, and an inner hollow buoy 11 is fixedly connected to the inside of the buoyancy cylinder 3, an air channel 12 is opened near the top of the outer surface of the inner hollow buoy 11, a vertical channel 14 is opened near the top of the air channel 12 of the inner hollow buoy 11, and an installation channel 17 is opened near the top of the vertical channel 14 of the inner hollow buoy 11, and a protective component 16 is fixedly connected to the inner side of the installation channel 17, and a turbine power generation component 15 is connected to the middle of the protective component 16. The protective components 16 are distributed at the top and bottom of the turbine power generation component 15, and the top of the installation channel 17 is connected to the ventilation hole 8.

[0024] Reference Figure 1-5 The wave energy power generation form is an oscillating water column wave energy conversion device. The wind turbine 1 is a megawatt-class variable speed and variable pitch offshore wind turbine. The semi-submersible wind power generation system includes a wind turbine 1, a tower structure 2, a semi-submersible support foundation and a supporting power transmission system. The semi-submersible support foundation includes a buoyancy cylinder 3, a lateral support rod 4, an oblique support rod 5 and a ballast tank 7. The various components of the support foundation structure are rigidly connected. The wave energy power generation device is installed in the buoyancy cylinder 3, including a hollow hole 10, an inner hollow buoy 11, an air channel 12, an oscillating water column chamber 13 and a turbine power generation assembly 15. The air channel 12 is reserved at the lower part. Compressed air drives the turbine power generation assembly 15 to generate electricity through the air channel 12. The outer wall of the oscillating water column chamber 13 is provided with a hollow hole 10, which can allow waves to enter the chamber. The bottom of the oscillating water column chamber 13 is provided with a contraction water channel, which can increase the rate of water column compressed air. The ballast tank 7 can realize the exchange of ballast water in the cabin and fluid outside the cabin.

[0025] In the utility model, when in use, when the incident wave acts on the outer wall of the buoyancy tube 3, the fluid will enter the oscillating water column chamber 13 through the air hole 10, generating a water column oscillating up and down, and the air in the air chamber is compressed to generate a reciprocating airflow flowing through the air channel 12, thereby driving the turbine power generation component 15 to generate electricity. The air hole 10 at the bottom of the buoyancy tube 3 can not only allow the waves to enter the oscillating water column chamber 13 to compress the air to form an air flow, but also weaken the load of the waves, thereby playing a role in reducing load and increasing stability. Under the action of wind, the wind turbine 1 rotates to generate electricity and will cause the floating movement of the semi-submersible support foundation. The movement of the support foundation will bring about the exchange of fluid inside and outside the ballast tank 7. When the fluid passes through the hole structure, energy dissipation is generated, which helps to dissipate excess kinetic energy of the integrated system and improve the overall stability.

[0026] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A kinetic energy recovery structure of a wind and wave energy integrated power generation system, comprising a wind turbine (1), characterized in that: The bottom of the wind turbine (1) is fixedly connected to a tower structure (2); a plurality of transverse support rods (4) and oblique support rods (5) are fixedly connected to the outer surface of the tower structure (2) near the bottom; one end of the oblique support rod (5) away from the tower structure (2) is fixedly connected to a buoyancy cylinder (3) and a ballast tank (7); the buoyancy cylinder (3) is fixedly connected to the top of the ballast tank (7); a ventilation hole (8) is provided at the top of the buoyancy cylinder (3) near the center; a connecting hole (9) is provided on the outer surface of the ballast tank (7); and a hollow hole (10) is provided on the outer surface of the buoyancy cylinder (3) near the bottom.

2. The kinetic energy recovery structure of the wind and wave energy integrated power generation system according to claim 1, characterized in that: The buoyancy cylinder (3) is fixedly connected to an inner hollow float (11), an air hole (12) is provided on the outer surface of the inner hollow float (11) near the top, a vertical hole (14) is provided on the inner hollow float (11) near the top of the air hole (12), and an installation hole (17) is provided on the inner hollow float (11) near the top of the vertical hole (14).

3. The kinetic energy recovery structure of the wind and wave energy integrated power generation system according to claim 1, characterized in that: The inner side of the buoyancy cylinder (3) and the outer surface of the inner hollow buoy (11) form an oscillating water column chamber (13), and the bottom of the oscillating water column chamber (13) is connected to the outside through a permeable hole (10).

4. The kinetic energy recovery structure of the wind and wave energy integrated power generation system according to claim 1, characterized in that: A bottom support rod (6) is fixedly connected between two adjacent ballast tanks (7), and a transverse support rod (4) is also fixedly connected between two adjacent buoyancy cylinders (3).

5. The kinetic energy recovery structure of the wind and wave energy integrated power generation system according to claim 2, characterized in that: A protective component (16) is fixedly connected to the inner side of the installation hole (17), a turbine power generation component (15) is connected to the middle of the protective component (16), the protective component (16) is distributed at the top and bottom of the turbine power generation component (15), and the top of the installation hole (17) is connected to the ventilation hole (8).

6. The kinetic energy recovery structure of the wind and wave energy integrated power generation system according to claim 3, characterized in that: A gently sloping contraction water channel structure is installed at the bottom of the oscillating water column chamber (13); a portion of the oscillating water column chamber (13) close to the top is connected to the inner hollow buoy (11); and the ballast liquid tank (7) can rotate and generate electricity under the action of a reciprocating air flow.

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