Oscillating water column and floater combined efficient wave energy conversion device

Abstract

The utility model discloses an oscillating water column and floater combined high-efficiency wave energy conversion device which is built on a coast or a seawall and can utilize wave energy of the coast more efficiently. The device is characterized by comprising a wave energy collection structure, a wave energy conversion structure and an electric energy collection and transmission structure, the wave energy collecting structure is composed of an oscillation air chamber and an oscillation floater, the wave energy converting structure is composed of a turbine device and a hydraulic device, and the electric energy collecting and transmitting structure is composed of a turbine generator and a solid-solid contact type friction nanometer generator. According to the device, wave energy efficiently captured under the combined action of the oscillation air chamber and the oscillation floater is converted into mechanical energy through the energy conversion device, and then power is generated through the turbine generator, so that energy brought by waves can be more fully utilized, and efficient power generation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wave energy power generation, in particular to a high-efficiency wave energy conversion device composed of an oscillating water column and a float. The device is constructed on a seawall or a coast and can fully utilize the energy brought by the waves to achieve high-efficiency power generation. Background Art

[0002] With the increasing demand for energy from industrial development and the increasing shortage of energy in the world, the use of clean energy is particularly important. The pressure on the environment caused by traditional energy makes people have concerns about its use. The development of clean energy such as wind energy and solar energy has become increasingly common. As a clean energy, wave energy has small variability per unit time, good predictability, and high energy density. Therefore, its development, utilization, and even the most efficient capture and conversion of wave energy have become an important research direction. At present, the main problem to be solved in the development and application of wave energy is energy loss. Due to the complex and unstable sea conditions, the related conversion devices have become complicated; therefore, the purpose of wave energy research is to reduce the energy loss rate and reduce the cost of device research and development and construction, and improve the adaptability, stability and reliability of the device to complex sea conditions.

[0003] There are some problems with existing wave energy conversion devices that need to be solved urgently. The cost of installing large power plants in the ocean to collect energy is very high. Strong waves and storms cause wave energy converters installed in the sea to malfunction. Moreover, wave energy power plants are installed in coastal areas far away from the power grid and away from the demand for electricity, which makes connection to the power grid difficult and expensive. In addition, wave power generation is difficult to transmit over long distances, resulting in consumption.

[0004] At present, the installation method of the oscillating air chamber power generation device is mainly to install it vertically on the water surface. The power generation method is limited and can only rely on gas compression to generate electricity, and the wave energy utilization rate is not high. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a high-efficiency wave energy conversion device composed of an oscillating water column and a float.

[0006] The technical solution provided by the utility model is: a highly efficient wave energy conversion device combining an oscillating water column and a float, which is special in that it consists of three parts: a wave energy collection structure, a wave energy conversion structure and an electric energy collection and transmission structure;

[0007] The wave energy collection structure includes an oscillating air chamber, which is composed of a front wall, an air chamber, a rear wall, an air chamber bottom slope foot, and an oscillating float; the front wall, the rear wall, and the upper and lower, left and right closed walls form a front semi-open structure, and an air chamber is formed in the middle, and the air chamber is a semi-closed structure that is only open to the Wells turbine; the bottom end of the oscillating air chamber is provided with an air chamber bottom slope foot, and the air chamber bottom slope foot is connected to the rear wall; the rear wall is composed of an upper and lower part, and a Wells air chamber air inlet is provided between the two parts, and rear wall holes are respectively provided on the upper and lower parts; and oscillating floats are respectively provided on the upper and lower parts of the rear wall;

[0008] The wave energy conversion structure includes a hydraulic device and a Wells turbine structure;

[0009] The hydraulic device is composed of a piston rod, a hydraulic pump, and an air pressure storage device. The oscillating float is connected to a guide rod, which is connected to a piston rod. The piston rod passes through a hole in the rear wall and is connected to a hydraulic pump. The other end of the hydraulic pump is connected to an air pressure storage device. The air inlet of the air pressure storage device is parallel to and corresponds to the turbine generator in the turbine generator room. An air outlet is arranged on the rear wall of the hydraulic device space.

[0010] The Wells turbine structure is composed of a turbine air chamber, a turbine rotor, guide vanes, a turbine shaft, and a power generation device. The turbine air chamber is connected to an air chamber. One end of the turbine shaft in the turbine air chamber is fixed to the turbine rotor by keying. The turbine rotor is provided with guide vanes, and the guide vanes are evenly and symmetrically distributed along the turbine shaft. The other end of the turbine shaft is connected to a solid-solid contact friction nanogenerator in the energy conversion chamber.

[0011] The electric energy collection and transmission structure comprises an energy conversion chamber and a turbine power generation chamber, wherein an air outlet is arranged on the energy conversion chamber; the turbine generator in the turbine power generation chamber and the solid-solid contact friction nanogenerator in the energy conversion chamber transmit electric energy through a circuit.

[0012] Furthermore, the static water depth in the air chamber is 16m, the thickness of the front wall is 0.8m, the angle between the front wall and the vertical direction is 30°, the width of the air chamber is 6.0m, the depth of the front wall into the water is 3.0m, the length of the air chamber is 12m, the height of the air chamber bottom slope foot is 5.0m, and the slope of the air chamber bottom slope foot is 26°.

[0013] Furthermore, the oscillating float is a cylindrical structure with a hollow middle portion and a solid bottom. There is a filler between the outer shell of the oscillating float and the inner wall of the internal cavity, and the oscillating float floats in the water.

[0014] The beneficial effects of the utility model are as follows: high-efficiency power generation is achieved by simultaneously working the compressed air and the vibrating float; power generation is achieved by using the waves to push the air, and the changes in the air chamber pressure are achieved through the ups and downs of the waves, thereby generating an airflow to drive the turbine device to rotate and drive the generator to generate electricity; the energy conversion process of compressed air wave energy generation is that the wave energy is converted into air kinetic energy, then into mechanical energy, and finally into electrical energy; while the process of vibrating float wave energy generation lacks the stage of air kinetic energy, that is, the wave energy is converted into mechanical energy and then into electrical energy; the combination of the two can more efficiently capture wave energy, realize energy conversion, and improve power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a partial structural schematic diagram of the oscillation air chamber of the utility model;

[0017] Figure 3 It is a schematic diagram of the Wells turbine structure of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the hydraulic device of the utility model;

[0019] Figure 5 It is a schematic diagram of the rear wall structure of the utility model.

[0020] In the figure: 1, front wall, 2, rear wall, 3, oscillating float, 4, air chamber bottom slope, 5, hydraulic device, 6, turbine air chamber, 7, energy conversion chamber, 8, air chamber, 9, turbine rotor, 10, rear wall hole, 11, hydraulic pump, 12, turbine generator chamber, 13, turbine generator, 14, piston rod, 15, air inlet, 16, air outlet, 17, guide rod, 18, Wells air chamber air inlet, 19, guide vane, 20, turbine shaft, 21, solid-solid contact friction nanogenerator, 22, air pressure storage device. DETAILED DESCRIPTION

[0021] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0022] See also Figure 1 , 2 , 3, 4, 5, installing the oscillating air chamber power generation device horizontally on the coast is conducive to combining it with the oscillating float power generation device;

[0023] An efficient wave energy conversion device combining an oscillating water column and a float, which consists of three parts: a wave energy collection structure, a wave energy conversion structure and an electric energy collection and transmission structure;

[0024] The wave energy collection structure includes an oscillating air chamber, and the material may be a new type of FRP sea sand concrete. The oscillating air chamber is composed of a front wall 1, an air chamber 8, a rear wall 2, an air chamber bottom slope foot 4, and an oscillating float 3. The front wall 1, the rear wall 2, and the upper and lower, left and right closed walls form a front semi-open structure, and an air chamber 8 is formed in the middle. The air chamber 8 is a semi-closed structure that is only open to the Wells turbine 9, and the air flow is continuously transmitted to the Wells turbine 9 mainly by the compression of the gas in the air chamber 8 by the waves; the air chamber bottom slope foot 4 is fixed at the bottom end of the oscillating air chamber, and the air chamber bottom slope foot 4 is connected to the rear wall 2; the rear wall 2 is composed of an upper and lower part, and there is a Wells air chamber air inlet 18 between the two, and rear wall holes 10 are respectively opened on the upper and lower parts; the oscillating float 3 is respectively installed on the upper and lower parts of the rear wall 2; the oscillating float 3 is formed into a power device by continuously floating up and down through the filling and removal of water flow in the air chamber, thereby achieving the conversion of wave energy;

[0025] The air chamber 8 increases the thickness of the front wall 1 or reduces the depth of the front wall 1 into the water, which can effectively reduce the energy dissipation caused by the reflection of the wave hitting the wall, which is beneficial to improving the ability of the turbine air chamber 6 to capture wave energy; therefore, the structural parameters of the air chamber 8 are: the inner static water depth is 16m, the thickness of the front wall 1 is 0.8m, the angle between the front wall 1 and the vertical direction is 30°, the width of the air chamber 8 is 6.0m, the depth of the front wall 1 into the water is 3.0m, the length of the air chamber 8 is 12m, the height of the air chamber bottom slope foot 4 is 5.0m, and the slope of the air chamber bottom slope foot 4 is 26°;

[0026] The oscillating float 3 is a cylindrical structure with a hollow middle and a solid bottom. The oscillating float 3 can be made of commonly used float materials in the prior art, such as a polyethylene shell material. The inner cavity of the oscillating float 3 is formed with a polyethylene material, and the outer shell of the oscillating float 3 and the inner wall material of the inner cavity are filled with a polystyrene rubber and plastic foam material. The oscillating float 3 floats in the water and acts on the energy stored in the float to the hydraulic device 5 and the Well turbine structure to realize energy conversion and transmission.

[0027] The wave energy conversion structure includes a hydraulic device 5 and a Wells turbine structure;

[0028] The hydraulic device 5 is composed of a piston rod 14, a hydraulic pump 11, and an air pressure storage device 22. The oscillating float 3 is connected to a guide rod 17, and the guide rod 17 is connected to the piston rod 14. The piston rod 14 passes through a hole 10 in the rear wall and is connected to the hydraulic pump 11. The other end of the hydraulic pump 11 is connected to the air pressure storage device 22. The air inlet 15 of the air pressure storage device is parallel to and corresponds to the turbine generator 13 in the turbine generator room 12.

[0029] The Wells turbine structure consists of a turbine air chamber 6, a turbine rotor 9, guide vanes 19, a turbine shaft 20, and a power generation device 21. The turbine air chamber 6 is connected to the air chamber 8. One end of the turbine shaft 20 in the turbine air chamber 6 is fixed to the turbine rotor 9 by keying. The turbine rotor 9 is provided with guide vanes 19, which are evenly and symmetrically distributed along the turbine shaft 20. The other end of the turbine shaft 20 is connected to the solid-solid contact friction nanogenerator 21 in the energy conversion chamber 7.

[0030] The electric energy collection and transmission structure includes an energy conversion chamber 7 and a turbine power generation chamber 12, and an air outlet 16 is provided on the energy conversion chamber 7; the turbine generator 13 in the turbine power generation chamber 12 and the solid-solid contact friction nanogenerator 21 in the energy conversion chamber 7 transmit electric energy through the circuit.

[0031] The utility model is a high-efficiency wave energy conversion device composed of an oscillating water column and a float. The oscillating float provides energy to enable the guide rod to push the piston rod to move toward the hydraulic pump. The air in the hydraulic pump is compressed and transmitted to the air pressure storage device 22. When the air pressure stored in the air pressure storage device 22 is large enough, the air will be released to drive the turbine generator to perform energy conversion. The hydraulic energy is finally converted into electrical energy to achieve the purpose of power generation.

[0032] Wells turbine structure: When the airflow passes through the turbine air chamber 6, the pressure generated by the airflow drives the guide vanes 19 to rotate, thereby rotating the turbine shaft 20, and the turbine shaft 20 drives the generator to generate electricity;

[0033] Highly efficient power generation is achieved by compressing air and vibrating the float 3 at the same time; power generation is achieved by using waves to push the air, and the change of air chamber pressure is achieved through the ups and downs of the waves, thereby generating airflow to drive the turbine device to rotate and drive the generator to generate electricity; the energy conversion process of compressed air wave energy generation is that wave energy is converted into air kinetic energy, then converted into mechanical energy, and finally converted into electrical energy; while the process of vibrating float wave energy generation lacks the stage of air kinetic energy, that is, wave energy is converted into mechanical energy, and then converted into electrical energy.

[0034] It should be understood that the technical features not elaborated in this specification belong to the prior art. Although the implementation methods of the utility model patent are described above in conjunction with the drawings, the utility model is not limited to the above specific implementation methods, which are only illustrative and not restrictive. Ordinary technicians in this field can make more forms under the enlightenment of the utility model without departing from the scope of protection of the purpose of the utility model and the claims, which are all within the protection scope of the utility model.

Claims

1. An efficient wave energy conversion device combining an oscillating water column and a float, characterized in that: It consists of three parts: wave energy collection structure, wave energy conversion structure and electric energy collection and transmission structure; The wave energy collection structure comprises an oscillating air chamber, which is composed of a front wall (1), an air chamber (8), a rear wall (2), an air chamber bottom slope foot (4), and an oscillating float (3); the front wall (1), the rear wall (2), and the upper and lower, left and right closed walls form a front semi-open structure, with an air chamber (8) formed in the middle, and the air chamber (8) is a semi-closed structure open only to the Wells turbine; an air chamber bottom slope foot (4) is provided at the bottom end of the oscillating air chamber, and the air chamber bottom slope foot (4) is connected to the rear wall (2); the rear wall (2) is composed of an upper part and a lower part, with a Wells air chamber air inlet (18) between the two parts, and rear wall holes (10) are respectively provided on the upper and lower parts; and oscillating floats (3) are respectively provided on the upper and lower parts of the rear wall (2); The wave energy conversion structure comprises a hydraulic device (5) and a Wells turbine structure; The hydraulic device (5) is composed of a piston rod (14), a hydraulic pump (11), and an air pressure storage device (22); the oscillating float (3) is connected to a guide rod (17), the guide rod (17) is connected to the piston rod (14), the piston rod (14) is connected to the hydraulic pump (11) through a hole (10) in the rear wall, the other end of the hydraulic pump (11) is connected to the air pressure storage device (22), the air inlet (15) of the air pressure storage device (22) is parallel to the turbine generator (13) in the turbine generator room (12); an air outlet (16) is provided on the rear wall of the space of the hydraulic device (5); The Wells turbine structure comprises a turbine air chamber (6), a turbine rotor (9), guide vanes (19), a turbine shaft (20), and a solid-solid contact friction nanogenerator (21); the turbine air chamber (6) is connected to an air chamber (8); one end of the turbine shaft (20) in the turbine air chamber (6) is fixed to the turbine rotor (9) by keying; the turbine rotor (9) is provided with guide vanes (19), and the guide vanes (19) are evenly and symmetrically distributed along the turbine shaft (20); the other end of the turbine shaft (20) is connected to the solid-solid contact friction nanogenerator (21) in the energy conversion chamber (7); The electric energy collection and transmission structure comprises an energy conversion chamber (7) and a turbine power generation chamber (12); the turbine generator (13) in the turbine power generation chamber (12) and the solid-solid contact friction nanogenerator (21) in the energy conversion chamber (7) transmit electric energy through a circuit.

2. The high-efficiency wave energy conversion device of an oscillating water column and a float combination according to claim 1, characterized in that: The static water depth in the air chamber (8) is 16 m, the thickness of the front wall (1) is 0.8 m, the angle between the front wall (1) and the vertical direction is 30°, the width of the air chamber (8) is 6.0 m, the depth of the front wall (1) entering the water is 3.0 m, the length of the air chamber (8) is 12 m, the height of the air chamber bottom slope foot (4) is 5.0 m, and the slope of the air chamber bottom slope foot (4) is 26°.

3. The high-efficiency wave energy conversion device of an oscillating water column and a float combination according to claim 1, characterized in that: The oscillating float (3) is a cylindrical structure with a hollow middle portion and a solid bottom. There is a filler between the outer shell of the oscillating float (3) and the inner wall of the internal cavity. The oscillating float (3) floats in the water.

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