An energy conversion system based on magnetic coupling energy transfer

Abstract

An energy conversion system based on magnetic coupling energy transmission includes a reciprocating motion input mechanism, a transmission shaft, a magnetic wheel disc, a guide magnetic disc, an outer rotor generator and a base; the power input end of the reciprocating motion input mechanism is connected to the transmission shaft to drive the transmission shaft to rotate clockwise or counterclockwise; the magnetic wheel disc and the outer rotor of the outer rotor generator are each installed on the transmission shaft through an overrunning clutch, and the two overrunning clutches are in opposite directions, so that the transmission shaft can alternately drive the magnetic wheel disc or the outer rotor to rotate in different rotation directions; the guide magnetic disc is arranged between the magnetic wheel disc and the outer rotor, and when an external reverse linear motion is input through a connecting rod, it can drive the rotating shaft 3 to rotate clockwise and counterclockwise, and further through the magnetic coupling effect, the outer rotor generator always maintains unidirectional motion. The present invention uses magnetic field interaction to realize the conversion of linear reciprocating motion into unidirectional rotation of the generator, which can improve the energy transfer efficiency and improve the reliability and power generation efficiency of the wave energy power generation device.

Description

Technical Field

[0001] The invention relates to wave energy power generation technology, and in particular to an energy conversion system based on magnetic coupling energy transmission. Background Art

[0002] The ocean area accounts for 71% of the total area of ​​the earth. The waves contain huge energy, and wave energy generation has become a very promising new energy development direction. Although wave energy has a large reserve and high energy flow density, waves have extremely strong randomness (irregularity) and destructiveness in extreme weather, which leads to obvious problems in the reliability and power generation efficiency of wave energy power generation devices. In the early stage of wave energy power generation development, pure mechanical energy transmission was mainly adopted. The energy conversion process of pure mechanical energy transmission wave energy power generation devices is characterized by: wave energy capture-mechanical energy-electrical energy. Its advantages are less energy form conversion and high energy transfer efficiency. However, due to the irregularity of waves, this irregular energy capture makes the operation of the mechanical structure extremely unstable, and even causes damage to the mechanical structure. At present, the most widely used and mature wave energy generation device is hydraulic energy transmission. The energy conversion process is: wave energy capture-hydraulic energy-mechanical energy-electrical energy. Since the hydraulic system has an energy storage buffer structure, it can convert irregular wave energy input into relatively stable hydraulic energy, so it enhances the stability and reliability of the entire system. However, the energy transfer process undergoes an extra conversion from mechanical energy to hydraulic energy, and the energy transfer efficiency of the hydraulic system is only about 50%, resulting in a large energy loss in this link. It is precisely because of these problems in existing technologies that wave energy has not yet been able to compete with thermal power in terms of cost and has not yet been commercialized. Summary of the invention

[0003] The purpose of the present invention is to address the deficiencies in the prior art and to propose an energy conversion system based on magnetic coupling energy transmission. The energy conversion system is composed of structural components such as a magnetic screw motor, a magnetic wheel disc, a magnetic outer rotor generator, and an overrunning clutch. The magnetic field interaction is used to realize the conversion of linear reciprocating motion into unidirectional rotation of the generator, thereby improving the energy transfer efficiency and improving the reliability and power generation efficiency of the wave energy power generation device.

[0004] In order to achieve the above-mentioned purpose of the present invention, the present invention adopts the following technical solutions:

[0005] The present invention discloses an energy conversion system based on magnetic coupling energy transmission, which includes a reciprocating motion input mechanism powered by wave energy, a transmission shaft, a magnetic wheel disc, a guide magnetic disc, an outer rotor generator and a base. The power input end of the reciprocating motion input mechanism is connected to the transmission shaft to drive the transmission shaft to rotate forward or reversely. The magnetic wheel disc and the outer rotor of the outer rotor generator are each installed on the transmission shaft through an overrunning clutch, and the directions of the two overrunning clutches are opposite, so that the transmission shaft can alternately drive the magnetic wheel disc or the outer rotor to rotate in different rotation directions. The guide magnetic disc is fixed by a base and is arranged between the magnetic wheel disc and the outer rotor of the outer rotor generator. A magnetic conductor is installed on the guide magnetic disc, and permanent magnets are installed on the disk surfaces of the magnetic wheel disc and the outer rotor. The direction of the magnetic field is parallel to the transmission shaft, and the north and south poles are arranged alternately. Assuming that when the transmission shaft rotates clockwise, it can drive the outer rotor of the generator to rotate clockwise, and the outer rotor generator generates electricity. At this time, the transmission shaft cannot drive the magnetic wheel to rotate. When the transmission shaft rotates counterclockwise, it can drive the magnetic wheel to rotate counterclockwise, but cannot drive the outer rotor of the generator to rotate counterclockwise. However, at this time, the permanent magnet magnetic field on the magnetic wheel interacts with the permanent magnet on the outer rotor of the motor through the magnetic conductor of the magnetic disk, which will generate a torque that makes the outer rotor of the motor rotate clockwise, thereby driving the outer rotor of the generator to rotate clockwise to generate electricity. The forward and reverse forces input to the transmission shaft by the reciprocating motion input mechanism will ultimately drive the outer rotor of the generator to always rotate in a single direction, thereby effectively improving the efficiency of the generator's power generation.

[0006] Specifically, the reciprocating motion input mechanism of the present invention has at least the following two forms:

[0007] A reciprocating motion input mechanism includes a connecting rod and a nut-screw mechanism, wherein the mover is the nut and the rotor is the screw. The connecting rod connects the motion output part of wave energy and the nut. The motion output part of wave energy outputs the force of the up and down movement of waves, and pushes the nut to reciprocate linearly through the connecting rod, thereby driving the screw to reciprocate. The screw is connected to the transmission shaft, driving the transmission shaft to rotate forward or reverse, which is converted into unidirectional rotation of the generator under the joint action of the magnetic wheel disk, the guide magnetic disk and the outer rotor generator to generate electricity.

[0008] Another reciprocating motion input mechanism is a water turbine. The rotating shaft is directly connected to the water turbine. The water turbine moves up and down in the water to generate reciprocating rotational motion, driving the rotating shaft to rotate forward or reversely. It can also be converted into a unidirectional rotation of the generator under the joint action of the magnetic wheel, the guide magnetic disk, and the outer rotor generator. Therefore, such a structure can also be used for wave energy generation.

[0009] Furthermore, in the present invention, the permanent magnets arranged on the disk surface of the magnetic wheel and the motor outer rotor, as well as the columnar magnetizers on the magnetic disk are all evenly arranged symmetrically along a circular axis of the same radius. The size, shape and number of the permanent magnets and columnar magnetizers on the disk surface may be the same or different, depending on the wheel rotation speed and energy transmission size.

[0010] As can be seen from the above technical solutions, the energy conversion system designed by the present invention is composed of reciprocating motion input mechanism, magnetic wheel disc, magnetic outer rotor generator, overrunning clutch and other structural components. The torque and energy are transmitted through magnetic field coupling between magnetic components. It has the characteristics of vibration isolation, no friction, no need for lubrication, automatic overload protection, simple structure and easy processing, and multi-condition applicability, that is, it prevents the instability of system operation caused by irregular waves and possible damage to the system. In addition, the energy transmission efficiency between magnetic components is high, which can simultaneously improve the reliability and power generation efficiency of wave energy power generation devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 , a schematic diagram of the structure of an embodiment of the energy conversion system proposed by the present invention (a one-way rotation system connected to a nut-screw mechanism);

[0012] Figure 2 , a schematic diagram of the structure of the magnetic wheel;

[0013] Figure 3 , a schematic diagram of the structure of the guide disk;

[0014] Figure 4 , schematic diagram of the structure of the generator outer rotor face plate;

[0015] Figure 5 , a schematic structural diagram of another embodiment of the energy conversion system proposed by the present invention (a one-way rotation system connected to a turbine).

[0016] In the figure: 1, connecting rod, 2, nut-screw structure, 21, nut, 22, screw, 3, transmission shaft, 4, magnetic wheel, 4-1, permanent magnet, 4-2, overrunning clutch, 5, magnetic disk, 5-1, magnetic conductor, 6, outer rotor generator, 61, outer rotor, 62, stator, 6-1, permanent magnet, 6-2, overrunning clutch, 7, base, 8, turbine. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and non-limiting embodiments:

[0018] Embodiment 1:

[0019] See also Figure 1This embodiment shows an energy conversion system based on magnetic coupling energy transmission using a nut-screw connection, comprising a reciprocating motion input mechanism powered by wave energy, a transmission shaft (3), a magnetic wheel disc (4), a guide disc (5), an outer rotor generator (6) and a base (7). The transmission shaft (3), the guide disc (5), the outer rotor generator (6) and the nut-screw mechanism (2) are all mounted on the base (7) and supported by the base (7).

[0020] The reciprocating motion input mechanism is composed of a connecting rod (1) and a nut-screw mechanism (2), wherein the mover is a nut (21) and the rotor is a screw (22). The connecting rod (1) connects a wave energy motion output part and the nut. The wave energy motion output part outputs the force of the up and down movement of the waves, and pushes the nut to reciprocate linearly through the connecting rod (1), thereby driving the screw to reciprocate. The screw is connected to a transmission shaft (3), driving the transmission shaft (3) to rotate in a forward or reverse direction.

[0021] The magnetic wheel disc (4) and the outer rotor (61) of the outer rotor generator (6) are each mounted on the transmission shaft (3) via an overrunning clutch, and the two overrunning clutches are in opposite directions, so that the transmission shaft (3) can alternately drive the magnetic wheel disc (4) or the outer rotor (61) to rotate in different rotation directions.

[0022] The guide disk (5) is fixed by a base (7). The guide disk (5) is fixed and is arranged between the magnetic wheel disk (4) and the outer rotor (61) of the outer rotor generator (6). The transmission shaft (3) passes through the hole in the center of the guide disk (5) without contacting each other. A magnetic conductor is installed on the guide disk (5). Permanent magnets are installed on the disk surfaces of the magnetic wheel disk (4) and the outer rotor (61). The direction of the magnetic field is parallel to the transmission shaft (3), and the north and south poles are arranged alternately.

[0023] When an external reverse linear motion is input through the connecting rod (1), driving the nut (21) to reciprocate up and down, it will cause the screw (22) of the nut screw mechanism to rotate clockwise and counterclockwise, thereby driving the transmission shaft (3) to rotate clockwise and counterclockwise. Assuming that the design is that when the transmission shaft (3) rotates clockwise, it can drive the generator outer rotor (61) to rotate clockwise to generate electricity. At this time, the transmission shaft (3) cannot drive the magnetic wheel (4) to rotate, and when the transmission shaft (3) rotates counterclockwise, it can drive the magnetic wheel (4) to rotate counterclockwise, but cannot The generator outer rotor (61) is driven to rotate counterclockwise. However, at this time, the magnetic field of the permanent magnet on the magnetic wheel (4) interacts with the permanent magnet on the motor outer rotor (61) through the magnetic conductor of the magnetic disk (5), generating a torque that causes the motor outer rotor (61) to rotate clockwise, thereby driving the generator outer rotor (61) to rotate clockwise to generate electricity. Therefore, the result is that the transmission shaft (3) rotates in any direction, which will cause the generator outer rotor (61) to always rotate in a single direction, thereby effectively improving the efficiency of the generator's power generation.

[0024] It can be seen that the above structure, through the connection of the connecting rod (1) with the energy absorption mechanism of the wave energy power generation device, receives the energy of the up and down vibration of the wave as the reciprocating linear motion of the nut (21) of the nut screw structure (2), causing the screw (22) to reciprocate, and at the same time causing the transmission shaft (3) to reciprocate, thereby driving the magnetic wheel (4) and the generator outer rotor (61) to rotate alternately, and when the magnetic wheel (4) rotates, it can cause the generator outer rotor (61) to rotate in the opposite direction through coupling with the magnetic field of the permanent magnet on the generator outer rotor (61). As a result, when the transmission shaft (3) rotates in any direction, it causes the generator outer rotor (61) to always rotate in a single direction, thereby effectively improving the efficiency of the generator power generation.

[0025] Embodiment 2:

[0026] See also Figure 5This embodiment shows another energy conversion system with a structural form. The reciprocating motion input mechanism adopts a fixed-blade water turbine (8), which is connected to the fixed-blade water turbine via a rotating shaft (3). The water turbine is placed in seawater. Due to the up and down movement of waves, the water turbine is triggered to reciprocate, and the transmission shaft (3) is driven to reciprocate at the same time. Under the joint action of the magnetic wheel (4), the guide magnetic disk (5), and the outer rotor generator (6), the rotation is converted into a unidirectional rotation of the generator. Therefore, such a structure can also be used for wave energy generation. In this structural form, the structure and connection relationship of the transmission shaft (3), the magnetic wheel (4), the guide magnetic disk (5), the outer rotor generator (6) and the base (7) are basically the same as those in Example 1. Similarly, the reciprocating rotation of the transmission shaft (3) drives the magnetic wheel (4) and the generator outer rotor (61) to rotate alternately. When the magnetic wheel (4) rotates, it can cause the generator outer rotor (61) to rotate in the opposite direction through coupling with the magnetic field of the permanent magnet on the generator outer rotor (61). As a result, when the transmission shaft (3) rotates in any direction, the generator outer rotor (61) always rotates in a single direction, thereby effectively improving the efficiency of the generator's power generation.

Claims

1. An energy conversion system based on magnetic coupling energy transfer, characterized in that: The invention comprises a reciprocating motion input mechanism powered by wave energy, a transmission shaft (3), a magnetic wheel disc (4), a magnetic guide disc (5), an outer rotor generator (6) and a base (7); the power input end of the reciprocating motion input mechanism is connected to the transmission shaft (3) to drive the transmission shaft (3) to rotate forward or reversely; the magnetic wheel disc (4) and the outer rotor (61) of the outer rotor generator (6) are each mounted on the transmission shaft (3) via an overrunning clutch, and the two overrunning clutches are in opposite directions, so that the transmission shaft (3) can alternately drive the magnetic wheel disc (4) or the outer rotor (61) to rotate in different rotation directions; the magnetic guide disc (5) is fixed via the base (7) and is arranged between the magnetic wheel disc (4) and the outer rotor (61) of the outer rotor generator (6); a magnetic guide is mounted on the magnetic guide disc (5); and a magnetic guide is mounted on the disk surface of the magnetic wheel disc (4) and the outer rotor (61). There are permanent magnets, with north and south poles arranged alternately; assuming that when the transmission shaft (3) rotates clockwise, it can drive the generator outer rotor (61) to rotate clockwise, and the outer rotor generator (6) generates electricity. At this time, the transmission shaft (3) cannot drive the magnetic wheel (4) to rotate. When the transmission shaft (3) rotates counterclockwise, it can drive the magnetic wheel (4) to rotate counterclockwise, but cannot drive the generator outer rotor (61) to rotate counterclockwise. However, at this time, the magnetic field of the permanent magnet on the magnetic wheel (4) interacts with the permanent magnet on the motor outer rotor (61) through the magnetic conductor of the magnetic conductor disk (5), generating a torque that causes the motor outer rotor (61) to rotate clockwise, thereby driving the generator outer rotor (61) to rotate clockwise to generate electricity. Therefore, the clockwise and reverse forces input to the transmission shaft (3) by the reciprocating motion input mechanism ultimately drive the generator outer rotor (61) to always rotate in a single direction.

2. The energy conversion system based on magnetic coupling energy transfer according to claim 1 is characterized in that: The reciprocating motion input mechanism comprises a connecting rod (1) and a nut-screw mechanism (2), wherein the mover is a nut (21), and the rotor is a screw (22). The connecting rod (1) connects a wave energy motion output part and the nut. The wave energy motion output part outputs the force of the up and down movement of the waves, and pushes the nut to perform linear reciprocating motion through the connecting rod (1), thereby driving the screw to reciprocate. The screw is connected to a transmission shaft (3), driving the transmission shaft (3) to rotate in a forward or reverse direction.

3. The energy conversion system based on magnetic coupling energy transfer according to claim 1 is characterized in that: The reciprocating motion input mechanism is a water turbine (8), and the transmission shaft (3) is directly connected to the water turbine (8). The water turbine (8) moves up and down in water to generate reciprocating rotational motion, driving the transmission shaft (3) to rotate in a forward or reverse direction.

4. According to the energy conversion system based on magnetic coupling energy transfer as claimed in claim 1, 2 or 3, the permanent magnets arranged on the disk surface of the magnetic wheel (4) and the motor outer rotor (61), and the columnar magnets on the magnetic disk (5) are all arranged evenly and symmetrically along the circumferential axis of the same radius, and the size, shape and number of the permanent magnets and columnar magnets on the disk surface can be the same or different, depending on the wheel rotation speed and the energy transmission size.

5. The energy conversion system based on magnetic coupling energy transfer according to claim 4, characterized in that: The transmission shaft (3) passes through the hole in the center of the guide disk (5) without contacting each other.

6. The energy conversion system based on magnetic coupling energy transfer according to claim 2, characterized in that: The transmission shaft (3), the outer rotor generator (6) and the nut screw mechanism (2) are all mounted on a base (7) and supported by the base (7).

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