Electro-thermal conversion device based on electro-magnetic-thermal coupling effect

Abstract

The utility model discloses an electro-thermal conversion device based on electro-magnetic-thermal coupling effect, and relates to the technical field of electro-thermal conversion, the electro-thermal conversion device comprises a support isolation structure, an induction coil and a heated structure, the support isolation structure comprises a base and a support, the support is arranged on the base, and the induction coil is arranged on the support. The induction coil is arranged on the outer side of the support, and the heated structure is arranged on the inner side of the support. According to the electro-thermal conversion device based on the electro-magnetic-thermal coupling effect, efficient electro-thermal conversion of electromagnetic induction and high-temperature radiation coupling is achieved through the induction coil, the energy conversion efficiency is improved, energy consumption is reduced, and the electro-thermal conversion device based on the electro-magnetic-thermal coupling effect is of great significance to energy conservation and emission reduction.

Description

Technical Field

[0001] This utility model relates to the field of electrothermal conversion technology, and in particular to an electrothermal conversion device based on electro-magnetic-thermal coupling. Background Technology

[0002] Currently, in the field of industrial heating, traditional electrothermal conversion methods mainly include resistance heating and electric arc heating. Although these methods are widely used, they have some inherent limitations. Resistance heating typically uses metal resistance wires or resistance strips as heating elements, heating materials through the Joule heat generated when an electric current passes through them.

[0003] However, due to the limitations of the resistive materials themselves, the energy conversion efficiency of this heating method is often low, and while a large amount of electrical energy is converted into heat energy, unnecessary heat loss also occurs. On the other hand, electric arc heating utilizes the electric arc discharge between two electrodes to generate high temperatures. Although it can achieve high heating temperatures, the instability of the electric arc and the non-uniformity of the heating area lead to low energy utilization, thus increasing energy consumption.

[0004] Furthermore, resistance heating and arc heating equipment are prone to material aging and accelerated wear during long-term operation due to frequent thermal expansion and contraction and the effects of high-temperature environments. This leads to a shortened equipment lifespan, requiring frequent replacement and repair, thus increasing maintenance costs. Finally, traditional electrothermal conversion methods may generate harmful gases and dust during the heating process, causing some environmental pollution. Utility Model Content

[0005] The purpose of this invention is to provide an electrothermal conversion device based on electro-magnetic-thermal coupling to solve the problems existing in the prior art, improve energy conversion efficiency, and reduce energy consumption.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides an electrothermal conversion device based on electro-magnetic-thermal coupling, comprising: a supporting isolation structure, an induction coil, and a heated structure. The supporting isolation structure includes a base and a bracket, the bracket being disposed on the base, the induction coil being disposed on the outside of the bracket, and the heated structure being disposed on the inside of the bracket.

[0008] Preferably, the supporting isolation structure is made of ceramic or quartz.

[0009] Preferably, the induction coil is fixed to the bracket by screws or clips.

[0010] Preferably, an insulating layer is provided between the induction coil and the support.

[0011] Preferably, the induction coil is made of nickel-chromium alloy or iron-nickel alloy.

[0012] Preferably, the bracket is provided with a cooling water channel.

[0013] Preferably, the bracket is provided with a heat dissipation structure.

[0014] Preferably, the system further includes a first water tank and a second water tank. The heated structure has a heating chamber inside. The inlet of the heated structure is connected to the outlet of the first water tank, and the outlet of the heated structure is connected to the inlet of the second water tank.

[0015] Preferably, the system further includes a purification structure, the inlet of which is connected to the outlet of the first water tank, and the outlet of which is connected to the inlet of the heated structure.

[0016] Preferably, the purification structure includes a pretreatment unit, a softening unit, a reverse osmosis membrane treatment unit, a deionization unit, and a terminal purification unit arranged sequentially from the inlet to the outlet of the purification structure.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] This invention discloses an electrothermal conversion device based on electro-magnetic-thermal coupling. Through the induction coil, it achieves efficient electrothermal conversion by coupling electromagnetic induction and high-temperature radiation, thereby improving energy conversion efficiency and reducing energy consumption. This is of great significance for energy conservation and emission reduction. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the electrothermal conversion device based on the electro-magnetic-thermal coupling effect of this utility model;

[0021] Figure 2 This is an energy change curve of the electrothermal conversion device based on electro-magnetic-thermal coupling of this utility model;

[0022] Figure 3 This is a waveform diagram of the current across the induction coil of this utility model;

[0023] Figure 4 This is a waveform diagram of the voltage across the induction coil of this utility model;

[0024] Figure 5 This is a system diagram of the voltage waveform across the capacitor of this utility model;

[0025] Figure 6 This is a waveform diagram of the skin layer current of this utility model;

[0026] Figure 7 This is a waveform diagram of the non-skin layer current of this utility model;

[0027] In the diagram: 1-Induction coil, 2-Supporting and isolation structure, 3-Heated structure, 4-Purification structure, 5-Water tank structure. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] The purpose of this invention is to provide an electrothermal conversion device based on electro-magnetic-thermal coupling to solve the problems existing in the prior art, improve energy conversion efficiency, and reduce energy consumption.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 7 As shown, this embodiment provides an electrothermal conversion device based on electro-magnetic-thermal coupling, including: a supporting isolation structure 2, an induction coil 1, and a heated structure 3. The supporting isolation structure 2 includes a base and a support, with the support mounted on the base. The induction coil 1 is mounted on the outside of the support, and the heated structure 3 is mounted on the inside of the support. When the heated structure 3 is placed in the magnetic field generated by the induction coil 1, it is converted into heat energy due to eddy current effect and hysteresis loss, causing the heated structure 3 to heat up rapidly.

[0032] Specifically, in this embodiment, the induction coil 1 is connected to a high-frequency power supply via a wire. The alternating current provided by the high-frequency power supply generates a changing magnetic field through the induction coil 1. A capacitor is provided between the induction coil 1 and the high-frequency power supply. Utilizing the principle of electromagnetic induction, eddy currents are generated inside the heated structure 3, thereby generating heat. The induction coil 1 is not only a component that generates an electromagnetic field, but also a resistive heating element. To achieve efficient electrothermal conversion, the induction coil 1 is made of a high-temperature resistant, highly conductive alloy material, such as nickel-chromium alloy or iron-nickel alloy. It can also be made of conductive materials such as copper or aluminum. The induction coil 1 is spiral-shaped or in other forms to optimize the magnetic field distribution and improve electromagnetic induction efficiency.

[0033] In this embodiment, the optimal electromagnetic coupling effect is achieved by optimizing the set parameters of induction coil 1. The magnetic field strength H is controlled by adjusting the number of turns N of induction coil 1, the current I through induction coil 1, and the length L of induction coil 1, thereby achieving the optimal electromagnetic coupling effect. The relationship between the magnetic field strength H and the number of turns N of induction coil 1, the current I through induction coil 1, and the length L of induction coil 1 can be expressed as:

[0034]

[0035] The selection of the diameter and number of turns of the induction coil 1 needs to consider factors such as the size and shape of the structure being heated 3 and the required heating power; the distance between the induction coil 1 and the structure being heated 3 needs to balance the requirements of electromagnetic coupling efficiency and safe distance. Through theoretical calculations and experimental verification, the optimal diameter D of the induction coil 1 is determined to be 30 mm, the number of turns to be 80 to 100, and the distance between the induction coil 1 and the structure being heated 3 to be 200 to 500 mm, thereby achieving the best electromagnetic coupling efficiency.

[0036] Specifically, simulation calculations were performed using induction coil 1 made of copper. The loss of induction coil 1 was approximately 228 watts, and the eddy current loss induced by the steel pipe was approximately 29.45 kilowatts. Simulation calculations were also performed using induction coil 1 made of iron-chromium-aluminum. The wire loss of induction coil 1 was approximately 5.4 kilowatts, the eddy current and hysteresis loss induced by the steel pipe was approximately 24.38 kilowatts, and the total loss (heat source) was approximately 29.8 kilowatts.

[0037] In this embodiment, the main function of the supporting isolation structure 2 is to fix the induction coil 1 and ensure that the induction coil 1 maintains proper electrical isolation from the surrounding environment. The supporting isolation structure 2 is made of materials with high temperature resistance, good insulation performance, high resistivity, and low dielectric loss characteristics, such as ceramics and quartz. Even under high voltage conditions, it can effectively prevent current leakage to ensure the safety and reliability of the system. Furthermore, when selecting the material for the supporting isolation structure 2, the matching of its coefficient of thermal expansion with the material of the induction coil 1 must be considered to ensure the stability and reliability of the structure under different temperature conditions, thereby reducing stress concentration and deformation problems caused by thermal expansion and contraction. The selection of materials also needs to consider cost factors to meet the needs of commercial applications. The design of the supporting isolation structure 2 also needs to consider factors such as ease of installation and maintenance.

[0038] In this embodiment, the support is made of ceramic or quartz, for example, a ceramic tube or a quartz tube. The support has sufficient mechanical strength and does not affect the effective transmission of the electromagnetic field. An insulating layer made of mica board is provided between the induction coil 1 and the support. The insulating layer is used to further enhance the electrical isolation effect and prevent partial discharge caused by surface defects. The induction coil 1 is fixed to the support by screws or clips made of insulating material to prevent displacement of the induction coil 1 during operation.

[0039] This embodiment improves the breakdown voltage threshold by rationally arranging the relative positions of the components and maximizing the minimum air gap distance between the induction coil 1 and other conductors. All sharp corners of the structure are rounded to reduce electric field concentration points and lower the risk of surface flashover.

[0040] In this embodiment, the heated structure 3 is a metal part, a liquid container, or other object that needs to be heated. When the heated structure 3 is placed in the magnetic field generated by the induction coil 1, the heated structure 3 will heat up rapidly due to the eddy current effect and hysteresis loss.

[0041] When the heated structure 3 is a liquid container, this embodiment also includes a water tank structure 5 and a purification structure 4. The water tank structure 5 includes a first water tank and a second water tank. A heating chamber is provided inside the heated structure 3. The inlet of the purification structure 4 is connected to the outlet of the first water tank, the outlet of the purification structure 4 is connected to the inlet of the heated structure 3, and the outlet of the heated structure 3 is connected to the inlet of the second water tank. The water in the first water tank enters the heated structure 3 after being purified by the purification structure 4. It is heated under the action of the induction coil 1. The heated water enters the second water tank. When needed, it flows from the second water tank into other structures.

[0042] In this embodiment, the purification structure 4 is used to improve water quality. The purification structure 4 includes a pretreatment unit, a softening unit, a reverse osmosis membrane treatment unit, a deionization unit, and a final purification unit, arranged sequentially from the inlet to the outlet of the purification structure 4. The pretreatment unit, softening unit, reverse osmosis membrane treatment unit, deionization unit, and final purification unit are all existing technologies. The pretreatment unit uses a mechanical filter (e.g., a filter filled with sand and activated carbon) to initially remove large particles and organic matter; the softening unit uses cation exchange resin to remove calcium and magnesium ions, reducing water hardness; the reverse osmosis membrane treatment unit uses a semi-permeable membrane to separate water and dissolved solids under high pressure, further removing inorganic salts and microorganisms; the deionization unit combines mixed bed or continuous electrodeionization (CDI / EDI) technology to thoroughly remove remaining charged particles; the final purification unit can be equipped with ultraviolet germicidal lamps (UV) or ultrafiltration (UF) as needed to achieve the highest water quality standards. The purification structure 4 can be automatically managed by a PLC control system, supporting unattended operation and possessing fault alarm functions. Energy-saving pump sets and optimized process flows can also be used to reduce energy consumption and achieve partial wastewater recycling. The purification structure 4 adopts a modular design for easy installation and subsequent maintenance, and key components are made of corrosion-resistant materials to extend their service life.

[0043] In this embodiment, for some applications with extremely high operating temperatures, the heated structure 3 is provided with cooling water channels and / or heat dissipation structures to help control the overall temperature and extend its service life.

[0044] To further improve the system's efficiency and stability, this embodiment can also integrate a temperature control system. The temperature control system can monitor the operating temperature of the induction coil 1 in real time and automatically adjust the current output based on feedback to ensure the system's safe operation and prevent equipment damage due to overheating.

[0045] This embodiment optimizes the induction coil 1 by using a high-temperature resistant and highly conductive alloy material, and combines it with a supporting and isolation structure 2 to achieve efficient electrothermal conversion through electromagnetic induction and high-temperature radiation coupling. It also has good stability and reliability, solves many problems existing in traditional electrothermal conversion technology, and has important application prospects.

[0046] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An electrothermal conversion device based on electro-magnetic-thermal coupling, characterized in that: include: The system includes a supporting isolation structure, an induction coil, and a heated structure. The supporting isolation structure includes a base and a bracket. The bracket is disposed on the base, the induction coil is disposed on the outside of the bracket, and the heated structure is disposed on the inside of the bracket.

2. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 1, characterized in that: The supporting isolation structure is made of ceramic or quartz.

3. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 2, characterized in that: The induction coil is fixed to the bracket by screws or clips.

4. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 2, characterized in that: An insulating layer is provided between the induction coil and the support.

5. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 1, characterized in that: The induction coil is made of nickel-chromium alloy or iron-nickel alloy.

6. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 2, characterized in that: The bracket is equipped with a cooling water channel.

7. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 2, characterized in that: The bracket is equipped with a heat dissipation structure.

8. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 1, characterized in that: It also includes a first water tank and a second water tank. The heated structure has a heating chamber inside. The inlet of the heated structure is connected to the outlet of the first water tank, and the outlet of the heated structure is connected to the inlet of the second water tank.

9. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 8, characterized in that: It also includes a purification structure, the inlet of which is connected to the outlet of the first water tank, and the outlet of which is connected to the inlet of the heated structure.

10. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 9, characterized in that: The purification structure includes a pretreatment unit, a softening unit, a reverse osmosis membrane treatment unit, a deionization unit, and a terminal purification unit arranged sequentially from the inlet to the outlet of the purification structure.

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