Coupling linear direct-drive wave energy conversion device

Abstract

The utility model discloses a coupling linear direct-drive wave energy conversion device, and belongs to the technical field of wave energy power generation. The device comprises a foundation pile, a floater and a linear power generation module, the foundation piles are fixed to the seabed. The floater movably sleeves the outer side of the foundation pile and moves up and down along with waves along the foundation pile; the linear power generation module comprises a central magnet and an induction coil, and the central magnet is fixed on the foundation pile; the induction coil is arranged on the periphery of the center magnet and connected with the floater. Waves drive the floater to move up and down along the foundation pile, the induction coil is driven to do linear motion relative to the center magnet, magnetic induction lines are cut to generate induction current, and direct drive conversion from wave energy to electric energy is achieved through cooperative work of the linear power generation module.

Description

Technical Field

[0001] This utility model belongs to the field of wave energy power generation technology, specifically relating to a coupled linear direct-drive wave energy conversion device. Background Technology

[0002] Wave energy is a renewable marine energy source characterized by abundant reserves, wide distribution, high energy density, high utilization rate, and clean and environmentally friendly characteristics. Wave energy power generation devices, as equipment that converts wave energy into electrical energy, have become one of the key research areas in wave energy power generation technology.

[0003] Currently, wave energy generation devices are showing a diversified development trend, including oscillating float-type wave energy generation devices. In existing oscillating float-type wave energy generation devices, the oscillating motion of the float transmits energy to the generator through mechanical transmission devices (such as hydraulic systems or gear systems). The structure is complex, and energy loss occurs during the mechanical transmission process due to factors such as friction and elastic deformation of components, reducing power generation efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a coupled linear direct-drive wave energy conversion device with a simple structure, reduced intermediate energy conversion links, and improved power generation efficiency.

[0005] This utility model provides the following technical solution:

[0006] A coupled linear direct-drive wave energy conversion device includes a foundation pile, a float, and a linear power generation module; the foundation pile is fixed to the seabed; the float is movably sleeved on the outside of the foundation pile and moves up and down along the foundation pile with the waves; the linear power generation module includes a central magnet and an induction coil, the central magnet is fixed to the foundation pile; the induction coil is located around the central magnet and connected to the float.

[0007] As an optional technical solution of this utility model, the linear power generation module includes a first linear power generation unit and a second linear power generation unit; both the first linear power generation unit and the second linear power generation unit are located above the float and move up and down along the foundation pile together with the float.

[0008] As an optional technical solution of this utility model, the first linear power generation unit and the second linear power generation unit are arranged sequentially from bottom to top.

[0009] As an optional technical solution of this utility model, the first linear power generation unit and the second linear power generation unit are connected by a spring.

[0010] As an optional technical solution of this utility model, both the first linear power generation unit and the second linear power generation unit include a central magnet and an induction coil, and the central magnet is fixed on the foundation pile; the induction coil is disposed on the periphery of the corresponding central magnet.

[0011] As an optional technical solution of this utility model, the induction coils of the first linear power generation unit and the second linear power generation unit are connected by a spring, and the induction coil of the first linear power generation unit is connected to a float.

[0012] As an optional technical solution of this utility model, the induction coil of the first linear power generation unit is fixedly connected to the float.

[0013] As an optional technical solution of this utility model, the central magnet includes an N pole and an S pole; the N pole is located above the S pole.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The coupled linear direct-drive wave energy conversion device provided by this utility model adopts a linear power generation module to directly couple a float, eliminating intermediate transmission links such as gearboxes, reducing mechanical losses, lowering maintenance costs, realizing direct-drive conversion of wave energy into electrical energy, and improving power generation efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the coupled linear direct-drive wave energy conversion device according to an embodiment of the present invention.

[0017] The following are marked in the diagram: 1. Foundation pile; 2. Float; 3. First linear power generation unit; 4. Second linear power generation unit; 5. Central magnet; 6. Induction coil; 7. Spring. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0019] Example 1

[0020] This embodiment provides a coupled linear direct-drive wave energy conversion device, such as... Figure 1 As shown, it includes a foundation pile 1, a float 2, and a linear power generation module;

[0021] The foundation pile 1 is fixed to the seabed.

[0022] The float 2 is movably sleeved on the outside of the foundation pile 1, floats on the sea surface, and moves up and down along the foundation pile 1 with the waves.

[0023] The linear power generation module includes a central magnet 5 and an induction coil 6. The central magnet 5 is fixed on the foundation pile 1. The induction coil 6 is located around the central magnet 5 and is connected to the float 2.

[0024] Working principle:

[0025] Wave-driven float 2 moves up and down along the foundation pile 1, causing the induction coil to move in a straight line relative to the central magnet, cutting the magnetic field lines to generate induced current. Through the coordinated work of the linear power generation modules, the wave energy is directly converted into electrical energy, and the electrical energy is transmitted to the electrical equipment through the cable.

[0026] Example 2

[0027] Based on Embodiment 1, one implementation method for each structure is provided.

[0028] The foundation pile 1 serves as a supporting foundation, fixed to the seabed, and is made of reinforced concrete or steel structure.

[0029] like Figure 1 As shown, the linear power generation module includes a first linear power generation unit 3 and a second linear power generation unit 4; both the first linear power generation unit 3 and the second linear power generation unit 4 are located above the float 2 and move up and down along the foundation pile 1 together with the float 2. The first linear power generation unit 3 and the second linear power generation unit 4 are arranged sequentially from bottom to top. In this embodiment, both the first linear power generation unit 3 and the second linear power generation unit 4 are linear generators.

[0030] Furthermore, both the first linear power generation unit 3 and the second linear power generation unit 4 include a central magnet 5 and an induction coil 6, and the central magnet 5 is fixed on the base pile 1 and does not move with the float 2. The induction coil 6 is located around the corresponding central magnet 5 and cuts the magnetic field lines when the float 2 moves up and down.

[0031] Furthermore, the induction coils 6 of the first linear power generation unit 3 and the second linear power generation unit 4 are connected by springs 7, and the induction coil 6 of the first linear power generation unit 3 is fixedly connected to the float 2, thereby realizing the series connection between the first linear power generation unit 3, the second linear power generation unit 4 and the float 2.

[0032] In this embodiment, the spring 7 is located between the first linear power generation unit 3 and the second linear power generation unit 4. On the one hand, it buffers the impact of the float's movement and maintains the dynamic balance of the device; on the other hand, the spring stiffness coefficient is selected as 10% of the static water restoring force coefficient of the float, so as to maximize the power absorbed by the conversion device from wave energy.

[0033] The central magnet 5 includes an N pole and an S pole; the N pole is located above the S pole, and the magnetic field lines are directed from the N pole to the S pole.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A coupled linear direct drive wave energy converter, characterized by: It includes foundation piles (1), floats (2), and linear power generation modules; The foundation pile (1) is fixed to the seabed; The float (2) is movably sleeved on the outside of the foundation pile (1) and moves up and down along the foundation pile (1) with the waves; The linear power generation module includes a central magnet (5) and an induction coil (6). The central magnet (5) is fixed on the foundation pile (1). The induction coil (6) is located around the central magnet (5) and is connected to a float (2).

2. The coupled linear direct drive wave energy converter of claim 1, wherein: The linear power generation module includes a first linear power generation unit (3) and a second linear power generation unit (4); The first linear power generation unit (3) and the second linear power generation unit (4) are both located above the float (2) and move up and down along the foundation pile (1) together with the float (2).

3. The coupled linear direct drive wave energy converter of claim 2, wherein: The first linear power generation unit (3) and the second linear power generation unit (4) are arranged sequentially from bottom to top.

4. The coupled linear direct drive wave energy converter of claim 2, wherein: The first linear power generation unit (3) and the second linear power generation unit (4) are connected by a spring (7).

5. The coupled linear direct drive wave energy converter of claim 4, wherein: The first linear power generation unit (3) and the second linear power generation unit (4) both include a central magnet (5) and an induction coil (6), and the central magnet (5) is fixed on the foundation pile (1); The induction coil (6) is located around the corresponding central magnet (5).

6. The coupled linear direct drive wave energy converter of claim 5, wherein: The induction coils (6) of the first linear power generation unit (3) and the second linear power generation unit (4) are connected by a spring (7), and the induction coil (6) of the first linear power generation unit (3) is connected to a float (2).

7. The coupled linear direct drive wave energy converter of claim 1, wherein: The induction coil (6) of the first linear power generation unit (3) is fixedly connected to the float (2).

8. The coupled linear direct drive wave energy converter of claim 1, wherein: The central magnet (5) includes an N pole and an S pole; The N pole is located above the S pole.

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