Wave energy linear generator

Abstract

The application discloses a wave energy linear power generation device, belongs to the field of wave energy, and solves the problems of slow movement speed of a mover of a wave energy linear generator and small movement stroke of the mover in the prior art. In the application, a floating body drives a transmission frame to move up and down under the action of waves, so that a cam assembly is driven to rotate through a transmission arm, a transmission rod is driven to move up and down, and another mover is driven to move, and finally, the two movers convert wave energy into electric energy through cutting of magnetic induction lines. The wave energy linear power generation device of the application expands the relative movement stroke of a permanent magnet and a coil, and improves the power generation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to a wave energy linear generator, belonging to the field of wave energy generation. BACKGROUND

[0002] Energy is an important material basis for human life and social progress and development. The development of industrial technology has greatly increased the demand for world energy. The large-scale exploitation and use of traditional fossil energy have brought about energy reserves crisis and environmental pollution, and the development of renewable energy is an important measure to solve the energy problem. Marine energy refers to renewable energy in the ocean, and wave energy is one of the marine energy. Wave energy has a large storage capacity and is easy to obtain, clean and pollution-free. In recent years, wave energy has gradually become the focus of renewable energy development and utilization.

[0003] Wave energy devices are mainly divided into three types according to the technical principle: oscillating water column type, overtopping type and oscillating body type. The oscillating float type belongs to the oscillating body type, which is usually a point absorption type device. This type of device has developed rapidly in recent years. Compared with other forms of wave energy generators, the oscillating float type wave energy generator has flexible structure, low construction cost and good reliability. Linear generator is a kind of energy conversion device that converts wave energy into electric energy. Compared with rotary generator, linear generator has the advantages of less intermediate transmission link, simple structure and low cost. At present, the motion characteristics of the permanent magnet assembly and the coil assembly of the wave energy direct drive linear generator are generally that one is fixed and the other is relatively moved. The linear generator with moving coil and fixed permanent magnet is called moving coil type linear generator, and the linear generator with fixed coil and moving permanent magnet is called moving iron type linear generator.

[0004] The power generation of linear generator is related to the number of turns of coil, the volume of permanent magnet and the magnetic flux change rate. The faster the magnetic flux change rate, the greater the power generation of linear generator. However, the actual wave fluctuation is a low-frequency motion, which limits the energy conversion efficiency of linear generator. In addition, for a specific sea area, it does not always have the expected strong wind and high waves. The smaller wave height limits the motion stroke of linear generator mover, which is not conducive to the energy collection of ordinary linear generator. SUMMARY

[0005] The present application provides a wave energy linear generator, which expands the relative motion stroke of permanent magnet and coil and improves the power generation efficiency.

[0006] The technical scheme adopted by the present application is a wave energy linear generator, which comprises a floating body and a linear generator assembly; the linear generator assembly comprises a transmission frame, a mover one and a stator; the mover one is connected to the floating body through the transmission frame and moves in the stator with the movement of the floating body;

[0007] Further comprising a second mover and a transmission assembly; the second mover is installed in the stator and moves in the stator, the moving direction of the second mover is opposite to the moving direction of the first mover;

[0008] The second mover is connected with the floating body through the transmission assembly and moves in the stator along with the movement of the floating body.

[0009] The optimized wave energy linear generator further comprises a fixed plate, and the stator is fixed on the fixed plate.

[0010] The optimized wave energy linear generator further comprises a sleeve, the sleeve is a hollow cylinder, the stator is a permanent magnet coil and is uniformly wound outside the sleeve; the first mover and the second mover slide in the sleeve along the axial direction of the sleeve.

[0011] The optimized wave energy linear generator, the transmission assembly comprises a transmission rod, a cam assembly and a transmission arm; one end of the transmission arm is hingedly connected with the side of the transmission frame, the other end of the transmission arm is hingedly connected with the power input end of the cam assembly; one end of the transmission rod is hingedly connected with the end of the second mover away from the first mover, the other end of the transmission rod is hingedly connected with the power output end of the cam assembly.

[0012] The optimized wave energy linear generator has two transmission arms and two cam assemblies, and each transmission arm is connected with one cam assembly;

[0013] The power output ends of the two cam assemblies are connected through a transmission shaft, and the end of the transmission rod away from the second mover is hingedly connected with the transmission shaft.

[0014] The optimized wave energy linear generator, the transmission frame is T-shaped with a short rod and a long rod; one end of the long rod of the transmission frame is fixed with the middle part of the short rod, the other end of the long rod of the transmission frame is fixed with the floating body; the ends of the two transmission arms are respectively hingedly connected with the two ends of the short rod of the transmission frame;

[0015] The fixed plate has a protruding block with a transmission frame through hole, and the long rod of the transmission frame passes through the transmission frame through hole and slides in the transmission frame through hole.

[0016] The optimized wave energy linear generator, the cam assembly comprises a shaft core, a first cam, a second cam, a third cam and a cam shaft;

[0017] The axis of the shaft core is parallel to the axis of the cam shaft;

[0018] The cam shaft passes through the end of the transmission arm and is rotationally connected with the end of the transmission arm;

[0019] The first cam, the second cam and the third cam are strip blocks.

[0020] The second cam and the third cam are symmetrically arranged at two ends of the cam shaft; the strip-shaped end of the second cam and the strip-shaped end of the third cam are respectively fixed at two ends of the cam shaft;

[0021] The two ends of the shaft core I are respectively fixed with the strip-shaped end of the first cam and the end of the second cam away from the cam shaft;

[0022] The end of the transmission shaft is fixed with the end of the first cam away from the shaft core I.

[0023] The optimized wave energy linear generator has two groups of boss groups on the fixed plate, and each group of boss groups has two spaced bosses; each cam assembly is connected with a group of boss groups;

[0024] The end of the third cam away from the cam shaft is rotationally connected with one of the bosses through a fixed shaft, and the shaft core I passes through the other boss and is rotationally connected.

[0025] The wave energy linear generator has the advantages that:

[0026] In the present application, the floating body drives the transmission frame to move up and down under the action of waves, thereby driving the cam assembly to rotate through the transmission arm, driving the transmission rod to move up and down, and thereby driving the other mover to move, so as to ultimately realize the conversion of wave energy into electric energy through the cutting of magnetic induction lines by the two movers.

[0027] The relative motion stroke of the coil assembly and the permanent magnet assembly is twice the height of the wave, the magnetic flux change rate is twice that of a conventional linear generator, and the power generation power is multiplied.

[0028] Moreover, the wave energy linear generator has the advantages of simple structure, low cost, and high power generation efficiency.

[0029] The wave energy linear generator has the advantages of two-stage energy conversion of the linear motor during power generation, simple principle, reduced energy conversion loss, and improved energy conversion efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The wave energy linear generator has the advantages of two-stage energy conversion of the linear motor during power generation, simple principle, reduced energy conversion loss, and improved energy conversion efficiency.

[0031] Figure 2 The wave energy linear generator has the advantages of two-stage energy conversion of the linear motor during power generation, simple principle, reduced energy conversion loss, and improved energy conversion efficiency.

[0032] Figure 3 The wave energy linear generator has the advantages of two-stage energy conversion of the linear motor during power generation, simple principle, reduced energy conversion loss, and improved energy conversion efficiency.

[0033] Figure 4 The wave energy linear generator has the advantages of two-stage energy conversion of the linear motor during power generation, simple principle, reduced energy conversion loss, and improved energy conversion efficiency. DETAILED DESCRIPTION

[0034] The technical features of the present application will be further described below in combination with the drawings and specific embodiments.

[0035] As shown in the drawings, the present application is a wave energy linear generator, including a floating body 3, a linear generator assembly, and a fixed plate 10. The fixed plate 10 can be made of nylon plate, wood plate, metal plate, etc. The fixed plate 10 is fixed near the waterline at the side end of the floating structure on the sea, and the linear generator assembly is above the water surface, so that the floating body 3 is kept in wave surface oscillation.

[0036] The linear generator assembly includes a transmission frame 4, a mover one 1, a mover two 2, a stator 16, and a sleeve 9. The sleeve 9 is fixed on the fixed plate 10. As shown in the drawings, the transmission frame 4 is T-shaped with a short rod and a long rod, one end of the long rod of the transmission frame 4 is fixed with the middle part of the short rod, and the other end of the long rod of the transmission frame 4 is fixed with the floating body 3. The fixed plate 10 has a protruding block with a transmission frame through hole, and the long rod of the transmission frame 4 passes through the transmission frame through hole and slides in the transmission frame through hole.

[0037] The sleeve 9 is a hollow cylinder with openings at both ends, and the stator 16 is a permanent magnet coil uniformly wound outside the sleeve 9. The transmission frame 4 also has an extension rod, the transmission frame 4 is located at one end of the sleeve 9, and the extension rod of the transmission frame 4 extends into the sleeve 9 through the opening at the end of the sleeve 9 and is fixed with the mover one 1. The mover one 1 slides in the sleeve 9, and the transmission frame 4 and the mover one 1 are limited to single degree of freedom movement up and down.

[0038] The mover two 2 is installed in the sleeve 9 and moves in the sleeve 9, the movement direction of the mover two 2 is opposite to that of the mover one 1, and the mover two 2 and the mover one 1 are both limited to single degree of freedom movement up and down, and the length of the sleeve 9 needs to be greater than the sum of the strokes of the two mover assemblies.

[0039] In this application, the mover two 2 is connected with the floating body 3 through a transmission assembly and moves in the stator 16 with the movement of the floating body 3. The transmission assembly includes a transmission rod 7, two transmission arms 11, and two sets of cam assemblies.

[0040] The cam assembly includes an integrated shaft core one 12, a first cam 13, a second cam 14, a third cam 15, and a cam shaft 5. The axis of the shaft core one 12 is parallel to the axis of the cam shaft 5, the cam shaft 5 passes through the end of the transmission arm 11 and is rotationally connected with the end of the transmission arm 11, and the first cam 13, the second cam 14, and the third cam 15 are strip blocks. The second cam 14 and the third cam 15 are symmetrically arranged at both ends of the cam shaft 5, and the strip end of the second cam 14 and the strip end of the third cam 15 are respectively fixed at both ends of the cam shaft 5.

[0041] The two ends of the shaft core 12 are fixed to the strip end of the first cam 13 and the end of the second cam 14 away from the camshaft 5, respectively, and the end of the transmission shaft 8 is fixed to the end of the first cam 13 away from the shaft core 12.

[0042] The distance from the end of the first camshaft to the shaft is half of the maximum stroke of the mover 2. The distances from the ends of the second and third camshafts to the shaft are equal and are half of the maximum stroke of the mover 1.

[0043] As shown in the figure, the fixed plate 10 has two sets of bosses, each set of bosses has two bosses spaced apart; each cam assembly is connected to one set of bosses. The end of the third cam 15 away from the camshaft 5 is rotatably connected to one of the bosses through the fixed shaft 6, and the shaft core 12 passes through the other boss and is rotatably connected.

[0044] The process of this application is as follows.

[0045] When the waves push the float upwards, the transmission frame 4 and stator 1 connected to it move upwards, which in turn drives the transmission arm 11 connected to the transmission frame to move upwards. Simultaneously, this drives the camshaft 5 to rotate around the fixed shaft 6, thereby causing the transmission rods 7 and 8 and the mover 2 to move downwards. In this way, the mover actually moves relative to the coil assembly by twice the wave height, so its power generation should theoretically be twice that of a conventional linear generator. Figure 1 , 4 As shown.

[0046] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should be protected by the present invention.

Claims

1. A wave energy linear power generation device, comprising a float (3) and a linear generator assembly; the linear generator assembly comprising a transmission frame (4), a mover (1), and a stator (16); the mover (1) is connected to the float (3) via the transmission frame (4) and moves within the stator (16) with the movement of the float (3); characterized in that: It also includes a second mover (2), a transmission assembly, a sleeve (9), two transmission arms (11) and two sets of cam assemblies; The second mover (2) is installed inside the stator (16) and moves within the stator (16). The direction of movement of the second mover (2) is opposite to the direction of movement of the first mover (1). The second mover (2) is connected to the float (3) through a transmission assembly and moves within the stator (16) along with the movement of the float (3); The sleeve (9) is a hollow cylindrical shape, and the stator (16) is a permanent magnet coil that is evenly wound on the outside of the sleeve (9); the first mover (1) and the second mover (2) slide inside the sleeve (9) along the axial direction of the sleeve (9); The transmission assembly includes a transmission rod (7), a cam assembly, and a transmission arm (11); one end of the transmission arm (11) is hinged to the side of the transmission frame (4), and the other end of the transmission arm (11) is hinged to the power input end of the cam assembly; one end of the transmission rod (7) is hinged to the end of the second mover (2) away from the first mover (1), and the other end of the transmission rod (7) is hinged to the power output end of the cam assembly; Each drive arm (11) is connected to a set of cam assemblies; There is a drive shaft (8) between the power output ends of the two cam assemblies. The power output ends of the two cam assemblies are connected by the drive shaft (8). The end of the drive rod (7) away from the second mover (2) is hinged to the drive shaft (8). The cam assembly includes a shaft core (12), a first cam (13), a second cam (14), a third cam (15), and a camshaft (5). The axis of the shaft core (12) is set parallel to the axis of the camshaft (5); The camshaft (5) passes through the end of the transmission arm (11) and is rotatably connected to the end of the transmission arm (11); The first cam (13), the second cam (14), and the third cam (15) are strip blocks; The second cam (14) and the third cam (15) are symmetrically arranged at both ends of the camshaft (5); the strip-shaped ends of the second cam (14) and the strip-shaped ends of the third cam (15) are respectively fixed at both ends of the camshaft (5); The two ends of the shaft core (12) are respectively fixed to the strip end of the first cam (13) and the end of the second cam (14) away from the camshaft (5); The end of the drive shaft (8) is fixed to the end of the first cam (13) away from the shaft core (12).

2. The wave energy linear power generation device according to claim 1, characterized in that: It also includes a fixing plate (10), and the stator (16) is fixed on the fixing plate (10).

3. The wave energy linear power generation device according to claim 2, characterized in that: The transmission frame (4) is a T-shaped structure with a short rod and a long rod; one end of the long rod of the transmission frame (4) is fixed to the middle of the short rod, and the other end of the long rod of the transmission frame (4) is fixed to the float (3); the ends of the two transmission arms (11) are respectively hinged to the two ends of the short rod of the transmission frame (4). The fixed plate (10) has a protrusion with a transmission frame through hole, and the long rod of the transmission frame (4) passes through the transmission frame through hole and slides in the transmission frame through hole.

4. The wave energy linear power generation device according to claim 3, characterized in that: The fixing plate (10) has two sets of bosses, each set of bosses has two bosses spaced apart; each cam assembly is connected to a set of bosses. The end of the third cam (15) away from the camshaft (5) is rotatably connected to one of the bosses via a fixed shaft (6), and the shaft core (12) passes through the other boss and is rotatably connected.

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