A new high-power thermomagnetic power generation device

Abstract

The application discloses a novel high-power thermomagnetic power generation device, which comprises a support, an induction coil, a first permanent magnet, a second permanent magnet, a fluid tank and a movement module; the support comprises a bottom plate, a top plate and support columns, the bottom plate is installed at the lower end of the support columns, and the top plate is installed at the upper end of the support columns; the induction coil is vertically arranged on the upper surface of the top plate; the first permanent magnet is vertically movably arranged in the induction coil; the second permanent magnet is arranged on the bottom plate; the fluid tank is arranged above the second permanent magnet; the movement module comprises a magnetic heat element and a driving assembly; the magnetic heat element is vertically movably arranged above the fluid tank, the upper end of the magnetic heat element is connected with the lower end of the first permanent magnet, the driving assembly is installed on the support, and the driving assembly is connected with the magnetic heat element and used for providing an upward driving force for the magnetic heat element; wherein the magnetic heat element is a magnetic heat material, and the fluid tank is provided with a hot fluid with a temperature higher than the Curie temperature of the magnetic heat element. The novel high-power thermomagnetic power generation device improves the output power of the thermomagnetic power generation device.

Description

Technical Field

[0001] This invention relates to the field of magnetocaloric materials and thermomagnetic power generation, and in particular to a novel high-power thermomagnetic power generation device. Background Technology

[0002] In recent years, a significant amount of heat generated from energy consumption in urban and industrial sectors has been lost to the environment as waste heat, becoming unused energy. Therefore, recovering waste heat from industrial production is an important research direction for solving the energy shortage problem. Since most waste heat is at a low temperature below 250℃, the small temperature difference makes traditional energy recovery methods extremely inefficient. The only method capable of recovering heat energy at this temperature is thermoelectric power generation. However, thermoelectric power generation has low output power in small-scale applications or applications below 100℃. Efficiently converting low-grade heat energy into usable energy requires new technological support. Thermomagnetic power generation technology based on ferromagnetic-paramagnetic phase transition has higher theoretical efficiency and is therefore considered one of the most promising directions.

[0003] Thermomagnetic power generation is a novel power generation technology with low heat source quality requirements, capable of utilizing heat sources in different temperature ranges. Based on the motion state of the magnetocaloric material, thermomagnetic generators can generally be divided into two types: stationary and moving. In a stationary thermomagnetic generator, the magnetocaloric material is stationary, and the heat exchange fluid alternately flows through it, resulting in a change in magnetic flux and the generation of current. Moving thermomagnetic generators can be further subdivided into rotary and linear types based on the different motion paths of the magnetocaloric material. In rotary thermomagnetic generators, the imbalance of magnetic forces at different positions generates torque that drives the ring to rotate, and the kinetic energy is then converted into electrical energy through a specific device. Linear thermomagnetic generators use the combined action of springs and permanent magnets to enable the soft magnetic material to reciprocate between the cold and hot ends; the kinetic energy generated by this motion is converted into electrical energy output through secondary energy conversion. Compared to stationary thermomagnetic generators, moving thermomagnetic generators have lower energy conversion efficiency but offer higher operating frequencies.

[0004] The Curie temperature is the critical temperature at which a magnetocaloric material undergoes a phase transition under the influence of a magnetic field. Below the Curie temperature, soft magnetic materials are in a ferromagnetic state; when the temperature exceeds the Curie temperature, they transform into a paramagnetic state. Materials with a greater magnetic entropy change produce a greater change in magnetic flux during the ferromagnetic-paramagnetic phase transition, which is beneficial for generating a larger output voltage.

[0005] In related technologies, linear motion thermomagnetic power generation devices, on the one hand, are limited by their structure and mostly rely on heat conduction for heat exchange, which is inherently slow; on the other hand, to increase the operating frequency and obtain greater output power, researchers mostly use sheet-like magnetocaloric materials with a thickness of no more than 1 mm as the working material, but the shape of the magnetocaloric material limits further increases in the device's power. Therefore, a linear thermomagnetic power generation device employing convective heat transfer is needed to effectively overcome the limitations imposed by the material shape on traditional devices and improve the output power of thermomagnetic power generation equipment. Summary of the Invention

[0006] To address at least one of the problems mentioned in the background section, the present invention aims to provide a novel high-power thermomagnetic power generation device.

[0007] This invention is achieved through the following technical solution:

[0008] A novel high-power thermomagnetic power generation device includes:

[0009] A support frame, comprising a base plate, a top plate, and a support column, wherein the base plate is mounted on the lower end of the support column, and the top plate is mounted on the upper end of the support column;

[0010] An induction coil is vertically disposed on the upper surface of the top plate;

[0011] A first permanent magnet is disposed within the induction coil and is vertically movable.

[0012] A second permanent magnet is disposed on the base plate;

[0013] A fluid tank is disposed above the second permanent magnet;

[0014] The motion module includes a magnetothermal element and a drive assembly. The magnetothermal element is vertically movable above the fluid tank. The upper end of the magnetothermal element is connected to the lower end of the first permanent magnet. The drive assembly is mounted on the bracket and is connected to the magnetothermal element to provide an upward driving force to the magnetothermal element.

[0015] The magnetothermal element is a magnetothermal material, and the fluid box contains a hot fluid with a temperature higher than the Curie temperature of the magnetothermal element. The reciprocating force exerted on the magnetothermal element by the second permanent magnet and the driving assembly causes the magnetothermal element to drive the first permanent magnet to move up and down reciprocally.

[0016] In one embodiment, the motion module further includes a connector, through which the upper end of the magnetothermal element is connected to the lower end of the first permanent magnet.

[0017] In one embodiment, the drive assembly includes a first spring and a second spring, which are symmetrically disposed on both sides of the connector. One end of the first spring is connected to the connector, and the other end of the first spring is connected to the lower surface of the top plate. One end of the second spring is connected to the connector, and the other end of the second spring is connected to the lower surface of the top plate.

[0018] In one embodiment, the drive assembly further includes a first upper spring rod, a second upper spring rod, and a lower spring rod. The first and second upper spring rods are symmetrically arranged on both sides of the connector. The first and second upper spring rods are connected to the lower surface of the top plate. The lower spring rod is perpendicular to the connector, and its center point is connected to the connector. One end of the first spring is connected to the first upper spring rod, and the other end of the first spring is connected to one end of the lower spring rod. One end of the second spring is connected to the second upper spring rod, and the other end of the second spring is connected to the other end of the lower spring rod.

[0019] In one embodiment, the top plate has a vertical through hole, and a linear bearing is installed in the vertical through hole. The connector is vertically movable and fits into the linear bearing.

[0020] In one embodiment, the top of the fluid tank has an opening for the magnetothermal element to enter and exit the fluid tank.

[0021] In one embodiment, the fluid tank has symmetrical inlets and outlets on its two side walls.

[0022] In one embodiment, the system further includes a high-temperature heat exchanger and a high-temperature pump, wherein the heat output terminal of the high-temperature heat exchanger is connected to the input terminal of the high-temperature pump, the output terminal of the high-temperature pump is connected to the inlet of the fluid tank, and the input terminal of the high-temperature heat exchanger is connected to the outlet of the fluid tank.

[0023] In one embodiment, an insulating tube is further included, which is mounted on the upper surface of the top plate, and the induction coil is wound around the outer side wall of the insulating tube. The first permanent magnet is vertically movable and disposed inside the insulating tube.

[0024] In one embodiment, a current detection device is further included, one end of which is connected to one end of the induction coil, and the other end of which is connected to the other end of the induction coil.

[0025] The beneficial effects of this invention are as follows: The novel high-power thermomagnetic power generation device of this invention solves the technical problems of existing linear motion thermomagnetic power generation devices, which mostly rely on slow heat conduction for heat exchange due to structural limitations, and use sheet-like magnetothermal materials with a thickness of no more than 1 mm as working materials, thus limiting the further improvement of device power. The invention achieves the following beneficial effects: Compared with existing linear motion thermomagnetic power generation devices, the device of this invention combines ferromagnetic phase transition and electromagnetic induction, and adopts a clever structural design to realize thermomagnetic power generation, reducing the volume of the thermomagnetic power generation device, increasing the output power of the thermomagnetic power generation device, and making the thermomagnetic power generation device have better working performance. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a partial structural side view of a novel high-power thermomagnetic power generation device according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram showing the connection between the magnetothermal element and the first permanent magnet in a novel high-power thermomagnetic power generation device according to an embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram of the structure of a novel high-power thermomagnetic power generation device according to an embodiment of the present invention without the support frame installed;

[0030] Figure 4 This is a partial structural side view of a novel high-power thermomagnetic power generation device according to an embodiment of the present invention;

[0031] Figure 5 This is a top view of the fluid tank of a novel high-power thermomagnetic power generation device according to an embodiment of the present invention;

[0032] The components include: 1. Support; 2. Induction coil; 3. First permanent magnet; 4. Second permanent magnet; 5. Fluid tank; 6. Motion module; 7. High-temperature heat exchanger; 8. High-temperature pump; 9. Insulating tube; 10. Current detection device; 11. Top plate; 111. Vertical through hole; 112. Linear bearing; 12. Support column; 13. Base plate; 51. Opening; 52. Water inlet; 53. Water outlet; 61. Magnetothermal element; 62. Drive assembly; 63. Connector; 621. First spring; 622. Second spring; 623. Upper hanging rod of the first spring; 624. Upper hanging rod of the second spring; 625. Lower hanging rod of the spring. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] The following is for reference Figure 1-5 A novel high-power thermomagnetic power generation device according to embodiments of the present invention will be specifically described.

[0035] like Figure 1 As shown, a novel high-power thermomagnetic power generation device according to an embodiment of the present invention includes a support 1, an induction coil 2, a first permanent magnet 2, a second permanent magnet 4, a fluid tank 5, and a motion module 6. The support 1 includes a base plate 13, a top plate 11, and a support column 12. The base plate 13 is installed at the lower end of the support column 12, and the top plate 11 is installed at the upper end of the support column 12. The induction coil 2 is vertically disposed on the upper surface of the top plate 11. The first permanent magnet 2 is vertically movable and disposed within the induction coil 2. The first permanent magnet 4 is disposed on the base plate 13. The fluid tank 5 is disposed above the first permanent magnet 4. The motion module 6 includes... The system comprises a magnetothermal element 61 and a drive assembly 62. The magnetothermal element 61 is vertically movable and positioned above the fluid tank 5. The upper end of the magnetothermal element 61 is connected to the lower end of the first permanent magnet 2. The drive assembly 62 is mounted on the bracket 1 and is connected to the magnetothermal element 61 to provide an upward driving force for the magnetothermal element 61. The magnetothermal element 61 is made of magnetothermal material. The fluid tank contains a hot fluid with a temperature higher than the Curie temperature of the magnetothermal element 61. The reciprocating force exerted on the magnetothermal element 61 by the first permanent magnet 4 and the drive assembly 62 causes the magnetothermal element 61 to drive the first permanent magnet 2 to move up and down reciprocally.

[0036] It should be noted that the induction coil 2 can be any structure that can generate induced current; the magnetothermal element 61 and the first permanent magnet 2 can be connected through the top plate 11 or by avoiding the top plate 11; the drive assembly 62 can be disposed on the top plate 11, or on the bottom plate 13 or the support column 12. In this embodiment, preferably, the drive assembly 62 is disposed on the lower surface of the top plate 11.

[0037] Here, both the horizontal and vertical directions are in... Figure 1 The directions shown in the attached figures are as understood according to conventional practice.

[0038] Therefore, the novel high-power thermomagnetic power generation device of the present invention solves the technical problems of existing linear motion thermomagnetic power generation devices, which mostly rely on slow heat conduction for heat exchange due to structural limitations, and use sheet-like magnetothermal materials with a thickness of no more than 1 mm as working materials, thus limiting the further improvement of device power. It achieves the following beneficial effects: Compared with existing linear motion thermomagnetic power generation devices, the device of the present invention combines ferromagnetic phase transition and electromagnetic induction, and adopts a clever structural design to realize thermomagnetic power generation, reduce the size of the thermomagnetic power generation device, improve the output power of the thermomagnetic power generation device, and make the thermomagnetic power generation device have better working performance.

[0039] like Figure 2 As shown, in one embodiment, the motion module 6 further includes a connector 63, and the upper end of the magnetothermal element 61 is connected to the lower end of the first permanent magnet 2 through the connector 63.

[0040] It should be noted that the connector 63 can be any structure used for connection, such as a connecting rod, thereby facilitating the connection between the magnetothermal component 61 and the first permanent magnet 2, simplifying the device structure.

[0041] like Figure 3 As shown, in one embodiment, the driving assembly 62 includes a first spring 621 and a second spring 622. The first spring 621 and the second spring 622 are symmetrically disposed on both sides of the connector 63. One end of the first spring 621 is connected to the connector 63, and the other end of the first spring 621 is connected to the lower surface of the top plate 11. One end of the second spring 622 is connected to the connector 63, and the other end of the second spring 622 is connected to the lower surface of the top plate 11. Thus, driving force can be conveniently provided to the magnetothermal element 61.

[0042] In one embodiment, the drive assembly 62 further includes a first upper spring rod 623, a second upper spring rod 624, and a lower spring rod 625. The first upper spring rod 623 and the second upper spring rod 624 are symmetrically arranged on both sides of the connector 63. The first upper spring rod 623 and the second upper spring rod 624 are connected to the lower surface of the top plate 11. The lower spring rod 625 is perpendicular to the connector 63, and the center point of the lower spring rod 625 is connected to the connector 63. One end of the first spring 621 is connected to the first upper spring rod 623, and the other end of the first spring 621 is connected to one end of the lower spring rod 625. One end of the second spring 622 is connected to the second upper spring rod 624, and the other end of the second spring 622 is connected to the other end of the lower spring rod 625.

[0043] It should be noted that the lower spring rod 625 and the connector 63 can be easily connected. For example, the connector 63 is provided with a socket, and the lower spring rod 625 passes through the socket. This can improve the structural stability of the drive assembly 62 and reduce the adverse effects of the structure on the thermomagnetic generator.

[0044] like Figure 4 As shown, in one embodiment, the top plate 11 is provided with a vertical through hole 111, and a linear bearing 112 is provided in the vertical through hole 111. The connecting member 63 is vertically movable and cooperates with the linear bearing 112, thereby reducing the friction between the connecting member 63 and the top plate 11 and improving work efficiency.

[0045] like Figure 5 As shown, in one embodiment, the top of the fluid tank 5 is provided with an opening 51, which is used for the magnetothermal element 61 to enter and exit the fluid tank 5.

[0046] It should be noted that the opening 51 is a structure that allows various thermomagnetic components to enter and exit the fluid tank 5. Thus, the magnetothermal component 61 can enter the fluid tank 5, lose its magnetism after being heated by the fluid, and then move upward under the action of the drive component 62.

[0047] In one embodiment, the fluid tank 5 has symmetrical inlets 52 and outlets 53 on its two side walls, thereby allowing the fluid tank 5 to be connected to a heat source device to provide a constant-temperature hot fluid to the magnetothermal element 61.

[0048] like Figure 3As shown, in one embodiment, it also includes a high-temperature heat exchanger 7 and a high-temperature pump 8. The heat flow output end of the high-temperature heat exchanger 7 is connected to the input end of the high-temperature pump 8, the output end of the high-temperature pump 8 is connected to the inlet 52 of the fluid tank 5, and the input end of the high-temperature heat exchanger 7 is connected to the outlet 53 of the fluid tank 5. Thus, the flow rate and temperature of the hot fluid can be controlled.

[0049] In one embodiment, an insulating tube 9 is also included, which is installed on the upper surface of the top plate 11. The induction coil 2 is wound around the outer wall of the insulating tube 9. The first permanent magnet 2 is vertically movable inside the insulating tube 9, thereby providing a stable support structure for the induction coil 2.

[0050] In one embodiment, a current detection device 10 is also included, one end of which is connected to one end of the induction coil 2, and the other end of which is connected to the other end of the induction coil 2, thereby enabling real-time monitoring of the output power of the thermomagnetic generator.

[0051] by Figure 1-5 For example, one optional operating process of the novel high-power thermomagnetic power generation device of the present invention is as follows:

[0052] In its initial state, the magnetothermal element 61 is magnetic. Under the force of the first permanent magnet 4, it moves downward and, through the connector 63, drives the first permanent magnet 2 downward. When the magnetothermal element 61 moves downward into the fluid tank 5 and is heated above the Curie temperature by the hot fluid in the fluid tank 5, the magnetothermal element 61 loses its magnetism. Under the drive of the drive assembly 62, the magnetothermal element 61 moves upward and, through the connector 63, drives the first permanent magnet 2 upward. After the magnetothermal element 61 moves upward and leaves the hot fluid in the fluid tank 5, it will cool naturally. When the magnetothermal element 61 cools below the Curie temperature, it regains its magnetism and reciprocates, thereby driving the first permanent magnet 2 to reciprocate.

[0053] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention 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. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0054] Furthermore, the terms "first" and "another" 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, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this invention, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] In the description of this specification, references to terms such as "an embodiment," "an example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel high-power thermomagnetic power generation device, characterized in that, include: A support frame, comprising a base plate, a top plate, and a support column, wherein the base plate is mounted on the lower end of the support column, and the top plate is mounted on the upper end of the support column; An induction coil is vertically disposed on the upper surface of the top plate; A first permanent magnet is disposed within the induction coil and is vertically movable. A second permanent magnet is disposed on the base plate; A fluid tank is disposed above the second permanent magnet; The motion module includes a magnetothermal element and a drive assembly. The magnetothermal element is vertically movable above the fluid tank. The upper end of the magnetothermal element is connected to the lower end of the first permanent magnet. The drive assembly is mounted on the bracket and is connected to the magnetothermal element to provide an upward driving force to the magnetothermal element. The magnetothermal element is a magnetothermal material, and the fluid box contains a hot fluid with a temperature higher than the Curie temperature of the magnetothermal element. The reciprocating force exerted on the magnetothermal element by the second permanent magnet and the driving assembly causes the magnetothermal element to drive the first permanent magnet to move up and down reciprocally. The motion module also includes a connector, and the upper end of the magnetothermal element is connected to the lower end of the first permanent magnet through the connector; The drive assembly includes a first spring and a second spring, which are symmetrically disposed on both sides of the connector. One end of the first spring is connected to the connector, and the other end of the first spring is connected to the lower surface of the top plate. One end of the second spring is connected to the connector, and the other end of the second spring is connected to the lower surface of the top plate. The drive assembly further includes a first upper spring rod, a second upper spring rod, and a lower spring rod. The first and second upper spring rods are symmetrically arranged on both sides of the connector. The first and second upper spring rods are connected to the lower surface of the top plate. The lower spring rod is perpendicular to the connector, and its center point is connected to the connector. One end of the first spring is connected to the first upper spring rod, and the other end of the first spring is connected to one end of the lower spring rod. One end of the second spring is connected to the second upper spring rod, and the other end of the second spring is connected to the other end of the lower spring rod.

2. The novel high-power thermomagnetic power generation device according to claim 1, characterized in that, The top plate is provided with a vertical through hole, and a linear bearing is provided in the vertical through hole. The connecting piece is vertically movable and fits into the linear bearing.

3. The novel high-power thermomagnetic power generation device according to claim 1, characterized in that, The fluid tank has an opening at the top for the magnetothermal element to enter and exit the fluid tank.

4. The novel high-power thermomagnetic power generation device according to claim 3, characterized in that, The fluid tank has symmetrical inlets and outlets on both sides.

5. The novel high-power thermomagnetic power generation device according to claim 4, characterized in that, It also includes a high-temperature heat exchanger and a high-temperature pump. The heat output end of the high-temperature heat exchanger is connected to the input end of the high-temperature pump, the output end of the high-temperature pump is connected to the inlet of the fluid tank, and the input end of the high-temperature heat exchanger is connected to the outlet of the fluid tank.

6. The novel high-power thermomagnetic power generation device according to any one of claims 1-5, characterized in that, It also includes an insulating tube, which is installed on the upper surface of the top plate, and the induction coil is wound around the outer wall of the insulating tube. The first permanent magnet is vertically movable and disposed inside the insulating tube.

7. The novel high-power thermomagnetic power generation device according to any one of claims 1-5, characterized in that, It also includes a current detection device, one end of which is connected to one end of the induction coil, and the other end of which is connected to the other end of the induction coil.

Images