A dual-degree-of-freedom flow-induced vibration ocean current generator coupled with magnetic levitation and electromagnetic power generation

Abstract

The invention discloses a dual-degree-of-freedom flow-induced vibration ocean current generator coupled with magnetic suspension and electromagnetic power generation, comprising a base, stator winding structures are symmetrically installed at both ends of the base, a vibrator structure is arranged between the stator winding structures on both sides, the vibrator structure is installed on the base, the stator winding structure comprises a stator disk, an armature disk is installed at one end of the stator disks on both sides close to each other, a plurality of coil windings are arranged in a circular array on the surface of the armature disk, and the vibrator structure comprises a vibrator, vibrator disks are installed at both ends of the vibrator, and the vibrator disks and the stator disks have magnetic poles that repel each other. The invention adopts a permanent magnet disk structure to replace the metal spring structure, there is no mechanical contact between the structures, the energy loss is relatively reduced, and the device can capture energy to a greater extent, thereby improving the power generation efficiency; the dual stator and single vibrator structure is adopted, the device has a small moment of inertia and a good heat dissipation effect, and the disk structure in the structure enables the device to move in dual degrees of freedom, increases the change of magnetic flux between the windings, thereby improving the power generation efficiency.

Description

Technical Field

[0001] The invention relates to a sea current energy power generation device, in particular to a double-freedom flow-induced vibration sea current generator coupled with magnetic suspension and electromagnetic power generation. Background Art

[0002] With the development of science and technology, fossil fuels such as coal, oil, and natural gas have been further developed and utilized. The shortage of non-renewable energy has made people turn their attention to renewable energy such as solar energy, wind energy, and ocean energy. Among the development and utilization of various types of renewable energy, the development and utilization of ocean energy has received more and more attention. It is highly predictable and has stable load, which is particularly suitable for the development and utilization of new marine energy.

[0003] Flow-induced vibration refers to the phenomenon of fluid-solid interaction in which when a fluid flows through a solid, it exerts alternating fluid forces on its surface, causing the solid to reciprocate, and the reciprocating motion of the solid changes the flow state of the fluid, thereby changing the fluid forces acting on the solid surface. Using the flow-induced vibration phenomenon to generate electricity using ocean current energy is a hot topic at present, but the seabed environment is complex, and how to research and develop efficient, stable, safe and reliable ocean current energy power generation devices has become an important topic. At present, most flow-induced vibration power generation devices use metal springs, which have a short service life and need to be replaced regularly. Therefore, some scholars have proposed a magnetic suspension spring. Using permanent magnets as spring structures combined with flow-induced vibration power generation devices can reduce losses and extend service life. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a dual-degree-of-freedom flow-induced vibration ocean current generator coupled with magnetic levitation and electromagnetic power generation, which is used to solve the problem of short service life and large loss of traditional structural metal springs, thereby extending the service life of the power generation device and improving the power generation efficiency of the power generation device.

[0005] Technical solution: The present invention includes a base, stator winding structures are symmetrically installed at both ends of the base, a vibrator structure is provided between the stator winding structures on both sides, the vibrator structure is installed on the base, the stator winding structure includes stator magnetic disks, armature disks are installed at one end of the stator magnetic disks on both sides close to each other, a plurality of coil windings are arranged in a circular array on the surface of the armature disk, the vibrator structure includes a vibrator, vibrator magnetic disks are installed at both ends of the vibrator, and the magnetic poles of the vibrator magnetic disk and the stator magnetic disk repel each other.

[0006] The annular array on the surface of the armature disc has a plurality of winding support bodies, each of which is fixed with a coil winding, and the coil windings are respectively embedded in a plurality of winding support bodies in a triangular shape.

[0007] The surface of the stator disk is provided with a plurality of first grooves along a circular array, and a permanent magnet is installed in each first groove, with the N pole of the permanent magnet facing inwards and the S pole facing outwards.

[0008] The armature disc is provided with a Hall sensor and a controller, and the Hall sensor is connected to the controller.

[0009] The bottom of the stator disk is installed at the corresponding notch of the base through a support column. A channel is provided in the middle of the support column for placing a connecting line. The channel in the support column is connected to the inside of the base through the notch.

[0010] The vibrator structure is installed on the base through a rocker, and the rocker includes a guide rod, one end of which is rotatably connected to the vibrator, and the other end is connected to a fixed rod through a connecting rod, and the fixed rod is installed on the base.

[0011] The vibrator magnetic disk has a plurality of second grooves in the inner annular array, and permanent magnets are installed in the second grooves, with the S poles of the permanent magnets facing inwards and the N poles facing outwards.

[0012] A top cover is installed at the end of the vibrator magnetic disk.

[0013] The armature disk and the stator disk are coaxially installed.

[0014] A storage battery is installed in the base, one end of the storage battery is connected to the controller, and the other end is connected to the power generation device.

[0015] Beneficial effects: The present invention adopts a permanent magnet disk structure instead of a traditional metal spring structure. There is no mechanical contact between the structures, and the energy loss is relatively reduced. The device can capture energy to a greater extent, thereby improving the power generation efficiency; a double stator and single oscillator structure is adopted, the device has a small moment of inertia and good heat dissipation effect, and the disk structure in the structure enables the device to move in two degrees of freedom, increasing the change in magnetic flux between the windings, thereby improving the power generation efficiency; using sensors and controllers to control the adjustment device to change the direction of current, reducing interference and friction during operation, and making the device run more stably; the starting flow rate is low, which is suitable for working in low-flow sea areas, and the device structure is simple and convenient for later maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0017] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0018] Figure 3 The stator winding structure of the present invention is schematically shown in FIG. Figure 1 ;

[0019] Figure 4 The stator winding structure of the present invention is schematically shown in FIG. Figure 2 ;

[0020] Figure 5 The stator winding structure of the present invention is schematically shown in FIG. Figure 3 ;

[0021] Figure 6 It is a schematic diagram of the oscillator structure of the present invention;

[0022] Figure 7 It is a schematic diagram of the internal structure of the vibrator of the present invention;

[0023] Figure 8 It is a schematic diagram of the rocker structure of the present invention;

[0024] Fig. 9 It is a schematic diagram of the motion trajectory of the present invention;

[0025] Fig.10 It is a schematic diagram of the control and regulation principle of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] like Figure 1 and Figure 2 As shown, the present invention includes a base 1, stator winding structures 4 are symmetrically installed at both ends of the top of the base 1, and the connection is waterproof and sealed. A vibrator structure 3 is provided between the stator winding structures 4 on both sides, and the vibrator structure 3 is installed on the top of the base 1 through a rocker 2.

[0028] The stator winding structures 4 on both sides of the base 1 form a double stator winding structure, such as Figures 3 to 5 As shown, the stator winding structure 4 includes a stator disk 53, one end of which is mounted with an annular housing 51, the annular housing 51 is made of insulating material, and the other end is mounted with an armature disk 54, the armature disk 54 and the stator disk 53 are coaxially mounted, the bottom of the stator disk 53 is mounted at the corresponding notch 11 of the base 1 through a support column 52, the middle of the support column 52 is provided with a channel for placing a connecting line, and the channel in the support column 52 is connected to the inside of the base 1 through the notch 11. Figure 3 As shown, the surface of the stator disk 53 has a plurality of first grooves 56 arranged in a circumferential array, and a permanent magnet is installed in each first groove 56, with the N pole of the permanent magnet facing inward and the S pole facing outward. Figure 5As shown, the armature disk 54 has several winding supports along the circumferential array on the surface. The winding supports are made of insulating materials for fixing the coil windings 55. The coil windings 55 are triangular and embedded in multiple winding supports. Compared with the previous armature disk 54 windings fixed by the perfusion method, the use of supports is more conducive to heat dissipation. The coil windings 55 are divided into three groups and connected in series to form a three-phase circuit. A Hall sensor 58 and a controller 57 are set on the armature disk 54. The Hall sensor 58 is connected to the controller 57. The controller 57 is connected to the three-phase circuit. The position of the vibrator structure is monitored by the Hall sensor 58, and a signal is sent to the controller 57 to adjust the direction of the three-phase current to achieve stable operation of the power generation device. The current direction of the three-phase circuit is controlled and adjusted by the signal sent by the Hall sensor 58. When the vibrator structure 3 moves, the position of the vibrator structure 3 can be monitored to determine when the current in the coil is reversed.

[0029] like Figure 6 and Figure 7 As shown, the vibrator structure 3 includes a vibrator 31, a top cover 34, and a vibrator magnetic disk 32. The vibrator 31 is a long cylinder made of aluminum alloy. Two identical vibrator magnetic disks 32 are provided at both ends of the vibrator 31. One side of the vibrator magnetic disk 32 is welded to the vibrator 31, and the other side is equipped with a top cover 34. The internal annular array of the vibrator magnetic disk 32 has multiple second grooves 33 for placing permanent magnets, and the permanent magnets are made with the S pole facing inward and the N pole facing outward.

[0030] like Figure 8 As shown, the rocker 2 includes a bearing 21, a guide rod 22, a connecting rod 24, a fixing rod 25, and a connecting shaft 23. The head of the guide rod 22 is a hollow ring structure, in which the bearing 21 is installed, and the bearing 21 is sleeved on the middle position of the vibrator 31. The other end of the guide rod 22 is connected to the connecting rod 24 through the connecting shaft 23, and the other end of the connecting rod 24 is connected to the fixing rod 25 through the connecting shaft 23, and the fixing rod 25 is fixed to the surface of the base 1.

[0031] like Fig. 9 and Fig.10 As shown, when the ocean current flows through the surface of the vibrator 31, the surface of the vibrator 31 is subjected to alternating fluid force, and due to the stator winding structure 4 symmetrically arranged on both sides, the vibrator magnetic disks 32 at both ends of the vibrator 31 and the stator magnetic disks 53 generate repulsive forces relative to each other, and the vibrator 31 is subjected to the combined force during the movement, driving the vibrator structure 3 to move in a "C"-shaped trajectory or an "8"-shaped trajectory in the plane. At this time, the guide rod 22 of the rocker 2 moves with the vibrator 31 through the bearing 21, and drives the connecting rod 24 and the fixed rod 25 to move relative to each other through the connecting shaft 23, thereby playing the role of pulling the vibrator structure 3.

[0032] When the vibrator 31 is affected by the ocean current and starts to move in the plane, it deviates from the initial equilibrium position. At this time, the Hall sensors 58 in the stator winding structures 4 on both sides detect the position of the vibrator 31 deviating from the reference position, and send a signal to enable the controller 57 to control and adjust the direction of the three-phase circuit in the armature disk 54, so that when the vibrator 31 moves, the three-phase coils on both sides are turned on in turn to generate a changing magnetic field, thereby generating a magnetic force to react on the vibrator structure 3, thereby driving the vibrator 31 to maintain a "C"-shaped trajectory or an "8"-shaped trajectory to generate a stable current.

[0033] A battery is installed in the base 1, one end of the battery is connected to the controller circuit, and the other end is connected to the output interface of the power generation device set on the rear side of the base, which is used to power electrical appliances. The surface of the base 1 is provided with symmetrically distributed notches, which are installed together with the channel opening of the support column 52, and are used to connect the circuits of the controllers 57 on both sides. The controllers 57 in the stator winding structures 4 on both sides cooperate with each other to make the vibrator structure 3 move continuously and stably, thereby controlling and adjusting the stable current output of the generator. The battery in the base 1 is connected to the output interface of the power generation device set on the rear side, which is used to power electrical equipment. When the device generates more electrical energy, the battery converts the electrical energy into chemical energy and stores it. When the device generates less electrical energy, the battery assists the device in supplying power to electrical equipment.

[0034] This device uses a permanent magnet disk structure to replace the metal spring used in the traditional flow-induced vibration power generation device to provide restoring force for the vibrator. When the ocean current flows through the vibrator surface, the cylindrical vibrator generates flow-induced vibration under the action of the ocean current and moves. The permanent magnet disk at the end of the vibrator deviates from the equilibrium position with the movement of the vibrator. Through the adjustment of the Hall sensor and the controller, the permanent magnet disk of the double-sided stator winding structure generates a reaction force on the permanent magnet disk at the end of the vibrator, so that the vibrator always maintains a stable "C"-shaped trajectory or "8"-shaped trajectory movement. The vibrator reciprocates under the conditions of water flow force, elastic restoring force and self-damping force. The reciprocating motion of the vibrator generates magnetic flux lines, which continuously cut the coil winding in the stator winding structure, thereby generating current to charge the battery set in the device. When the output interface on the rear side of the base is connected to the electrical equipment, the battery in the device is discharged. At the same time, the vibrator continues to reciprocate under the action of the ocean current permanent magnet, and continuously generates current.

[0035] The present invention is designed for power supply of small marine equipment, and is mainly used for underwater power generation and power supply. At the same time, by combining the flow-induced vibration principle with magnetic levitation technology, the mechanical structure of the device is simplified, and the energy of the ocean current can be better captured, thereby obtaining higher power generation efficiency and reducing energy loss.

Claims

1. A dual-degree-of-freedom flow-induced vibration ocean current generator coupled with magnetic levitation and electromagnetic power generation, characterized in that: The invention comprises a base (1), wherein stator winding structures (4) are symmetrically mounted at two ends of the base (1), a vibrator structure (3) is arranged between the stator winding structures (4) on both sides, the vibrator structure (3) is mounted on the base (1), the stator winding structure (4) comprises a stator magnetic disk (53), an armature disk (54) is mounted at one end of the stator magnetic disks (53) on both sides close to each other, a plurality of coil windings (55) are arranged in an annular array on the surface of the armature disk (54), the vibrator structure (3) comprises a vibrator (31), a vibrator magnetic disk (32) is rotatably mounted at both ends of the vibrator (31), and the magnetic poles of the vibrator magnetic disk (32) and the stator magnetic disk (53) repel each other; The armature disk (54) has a plurality of winding support bodies in an annular array on its surface, and a coil winding (55) is fixed on each winding support body; the stator disk (53) has a plurality of first grooves (56) along the annular array on its surface, and a permanent magnet is installed in each first groove (56); The vibrator structure (3) is mounted on the base (1) via a rocker (2); the rocker (2) comprises a guide rod (22); one end of the guide rod (22) is rotatably connected to the vibrator (31); the other end of the guide rod (22) is connected to a fixed rod (25) via a connecting rod (24); and the fixed rod (25) is mounted on the base (1).

2. The dual-degree-of-freedom flow-induced vibration ocean current generator coupled with magnetic levitation and electromagnetic power generation according to claim 1 is characterized in that: A Hall sensor (58) and a controller (57) are provided on the armature disk (54), and the Hall sensor (58) is connected to the controller (57).

3. The dual-degree-of-freedom flow-induced vibration ocean current generator coupled with magnetic levitation and electromagnetic power generation according to claim 2 is characterized in that: The bottom of the stator disk (53) is mounted on a corresponding notch of the base (1) via a support column (52), and a channel is provided in the middle of the support column (52).

4. The dual-degree-of-freedom flow-induced vibration ocean current generator coupled with magnetic levitation and electromagnetic power generation according to claim 1 is characterized in that: The vibrator magnetic disk (32) has a plurality of second grooves (33) in an annular array, and permanent magnets are installed in the second grooves (33).

5. The dual-degree-of-freedom flow-induced vibration ocean current generator coupled with magnetic levitation and electromagnetic power generation according to claim 4 is characterized in that: A top cover (34) is installed at the end of the vibrator magnetic disk (32).

6. The dual-degree-of-freedom flow-induced vibration ocean current generator coupled with magnetic levitation and electromagnetic power generation according to claim 1 is characterized in that: The armature disk (54) and the stator disk (53) are coaxially mounted.

7. The dual-degree-of-freedom flow-induced vibration ocean current generator coupled with magnetic levitation and electromagnetic power generation according to claim 1 is characterized in that: A storage battery is installed in the base (1), one end of the storage battery is connected to the controller, and the other end is connected to the power generation device.

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