Electromagnetic servo oil temperature controller

Abstract

The invention relates to an electromagnetic servo oil temperature machine and relates to the field of oil temperature control, in particular to an electromagnetic servo oil temperature machine and a temperature control method.The electromagnetic servo oil temperature machine comprises the electromagnetic servo oil temperature machine, a machine box is provided with an input pipe, a heating module and an output pipe which are connected in sequence, and the outer side of a magnetizer pipeline of the heating module is coated with a heat preservation layer; an electromagnetic coil is wound on the outer side of the heat preservation layer, the magnetizer pipeline is provided with a winding section and / or a branch section, an output pump and a motor are arranged between the output pipe and the magnetizer pipeline, a temperature sensor is arranged in the output pipe, and a metal flow guide grating plate or a metal flow guide spring can be arranged in the magnetizer pipeline according to needs. The invention further provides a temperature control method using the temperature sensor, the controller and the variable-frequency power source in cooperation. The effects of effectively improving the heat conduction oil heating efficiency, accurately controlling the oil temperature, reducing the energy consumption and improving the equipment stability are achieved.

Description

Technical Field

[0001] This application relates to the field of heat transfer oil heating devices, and in particular to an electromagnetic servo oil temperature controller. Background Technology

[0002] In the field of thermal oil heating devices, high-temperature oil temperature controllers, as devices that heat thermal oil to a high temperature and transfer the heat to the load end via a circulating oil pump, play a vital role in numerous fields, including industrial production. With the continuous development of industry, the requirements for the stability, performance, and efficiency of thermal oil heating equipment are also increasing. Technological advancements in this area help improve heat transfer efficiency in the production process, ensuring production stability and product quality. For example, in industries such as chemicals, plastics, and rubber, high-temperature oil temperature controllers provide a stable heat source for equipment such as reaction vessels and molds, ensuring the smooth operation of production processes. Simultaneously, they are widely used in fields with high temperature control requirements, such as food processing and pharmaceuticals, meeting the precise temperature needs of different production stages. Moreover, advancements in high-temperature oil temperature controller technology can also promote the upgrading of related industries, improve product quality and competitiveness, and foster the development of the entire industrial system.

[0003] Currently available equipment of this type basically involves adding multiple heating rods to the circulating pipeline of the heat transfer oil, which are then inserted into the oil to raise its temperature. A temperature sensor is added to the oil outlet pipeline, and a temperature controller controls the on / off state. The heating rods are resistors, so the power consumption is fixed when the power is on. This method is relatively traditional and common, and is widely used in many industrial scenarios. In some small production enterprises or situations where heating efficiency requirements are not particularly high, this method is simple, easy to implement, and relatively inexpensive. Furthermore, this technology is relatively mature, and the related equipment and components are relatively easy to obtain and maintain. In addition, this heating method can meet basic heating needs to a certain extent, making it a feasible option for some production processes where temperature accuracy requirements are not extremely high. However, the heating rods typically operate for long periods, which can easily lead to sintering on the stainless steel outer wall. Sintering makes heat conduction more difficult, resulting in localized high temperatures. This can cause the heating wire to melt, or even melt through the stainless steel, bringing the heating wire into contact with the oil. Besides requiring shutdown to replace spare parts and halting production, there are also safety risks.

[0004] Furthermore, the temperature control logic of resistance heating necessitates a higher temperature. After the heating wire heats up, it must pass through an insulation layer, a stainless steel layer, and an outer layer of sludge before finally reaching the heat transfer oil for heat exchange. This multi-stage process reduces heat transfer efficiency and results in higher energy consumption. Over long-term use, this leads to significant energy consumption and increased production costs for businesses. Moreover, the low heat transfer efficiency may cause prolonged heating times, impacting production efficiency. Summary of the Invention

[0005] To overcome the above-mentioned technical problems, this application provides an electromagnetic servo oil temperature controller.

[0006] The electromagnetic servo oil temperature controller provided in this application adopts the following technical solution:

[0007] An electromagnetic servo oil temperature controller includes a chassis, on which an input pipe, a heating module, and an output pipe are connected in sequence. The heating module includes an internal magnetic conductor pipe for conveying heat transfer oil. The magnetic conductor pipe is covered with an insulation layer, and an electromagnetic coil is wound around the outside of the insulation layer.

[0008] By adopting the above technical solution, electromagnetic heating technology is applied to the field of high-temperature oil temperature controllers. This results in high heating efficiency, with heat generated directly on the pipe wall of the magnetic conductor tube, leading to extremely high thermal efficiency and a comprehensive energy saving rate typically exceeding 30%. Furthermore, the magnetic conductor tube and the electromagnetic coil are not in direct contact; the electromagnetic coil itself does not generate heat, and an insulation layer provides thermal insulation between the magnetic conductor tube and the electromagnetic coil.

[0009] Preferably, the magnetic conductor conduit has a winding section, and the electromagnetic coil is wound around the circumference of the winding section.

[0010] By adopting the above technical solution, the winding arrangement makes the magnetic conductor pipeline more concentrated, and the use of electromagnetic coils to wind the winding section makes the heating area more concentrated, the magnetic line density higher, and the space occupied smaller. When the winding diameter is relatively small, the electromagnetic coil can also be directly wound on the outside of the winding section, without the need for winding from the inside or outside.

[0011] Preferably, the magnetic conductor conduit has a branch section, and the electromagnetic coil is wound along the length of the branch section. The branch section includes several parallel magnetic conductor branches, which are distributed in parallel with each other.

[0012] By adopting the above technical solution, the magnetic conductor pipeline has branch sections, and the electromagnetic coil is wound along the length of the branch section. The branch section includes several parallel and parallel magnetic conductor branches, which can heat the heat transfer oil in a parallel multi-path manner, further increasing the heating area and improving the heating efficiency.

[0013] Preferably, the insulation layer is made of a high-temperature resistant insulating material.

[0014] By adopting the above technical solutions, the requirements for use in high-temperature environments can be met, ensuring the stable operation of the electromagnetic servo oil temperature controller.

[0015] Preferably, an output pump and a motor are provided between the output tube and the magnetic conductor tube.

[0016] By adopting the above technical solution, an input pipe, a heating module, and an output pipe are connected in sequence in the chassis. The magnetic conductor pipe of the heating module transports heat transfer oil. An output pump and a motor are installed between the output pipe and the magnetic conductor pipe, which can ensure the normal circulation of heat transfer oil in the pipeline and ensure the stable operation of the oil temperature controller.

[0017] Preferably, a temperature sensor is installed inside the output tube, and the temperature sensor signal is connected to a controller, which is electrically connected to an electromagnetic coil.

[0018] By adopting the above technical solution, the electromagnetic servo oil temperature controller can achieve closed-loop intelligent temperature control. It can dynamically adjust the heating power of the electromagnetic coil according to the temperature difference between the set target temperature and the real-time measured temperature, so that the temperature change of the heat transfer oil is smoother, energy consumption is reduced, and the temperature of the heat transfer oil can be stably controlled at the set temperature.

[0019] Preferably, the interior of the magnetic conductor pipeline is provided with a metal flow guide grid plate.

[0020] By adopting the above technical solution, the metal flow guide grid plate includes several plates connected in sequence, with adjacent plates tilting in opposite directions, and each of the plate surfaces is provided with flow guide holes. When the fluid flows through the metal flow guide grid plate, the fluid first changes its direction of travel due to the changing tilt angle of the plates. Secondly, when passing through the flow guide holes, the flow cross-sectional area decreases sharply, resulting in a faster flow velocity at the flow guide holes, thereby further enhancing the turbulence effect and improving the uniformity of heating of the fluid. In addition, the metal flow guide grid plate also further increases the heat exchange area between the magnetic conductor pipe and the fluid, thus resulting in higher heating efficiency.

[0021] Preferably, a metal current-guiding spring is provided inside the magnetic conductor pipeline, and the metal current-guiding spring is distributed in a spiral shape inside the magnetic conductor pipeline.

[0022] By adopting the above technical solution, the metal guide spring can increase the turbulence during fluid transportation, making the heat exchange more uniform during fluid transportation and heating; the metal guide spring will also be heated under electromagnetic action, thereby further increasing the heat exchange area between the fluid and the magnetic conductor pipeline and improving the heat exchange effect; the metal guide spring is fixed to the inner wall of the magnetic conductor pipeline at intervals, and vibrates slightly during transportation, increasing the turbulence of the fluid, assisting in scraping the inside of the magnetic conductor pipeline, and causing slight vibration of the magnetic conductor pipeline, making it less likely for scale to form inside the magnetic conductor pipeline, which is conducive to maintaining a better heat exchange efficiency state;

[0023] Preferably, an auxiliary support is provided between the insulation layer and the electromagnetic coil. The auxiliary support includes a support leg, a support rod, and a support arranged sequentially from bottom to top. The support leg abuts against the outside of the insulation layer. The electromagnetic coil is divided into inner and outer layers. The support rod is located between adjacent winding layers of the inner electromagnetic coil. The support is used to support the outer electromagnetic coil.

[0024] By adopting the above technical solution, when double-layer electromagnetic coils need to be arranged, an auxiliary support can be used for winding. The inner electromagnetic coil will clamp the support rod and hold the support foot tightly, ensuring the stability of the auxiliary support. The outer electromagnetic coil can be directly wound inside the support. The support is U-shaped, making it difficult for the outer electromagnetic coil to slip off. The distance between the inner and outer coils can be customized by the length of the support rod, improving the convenience of the double-layer electromagnetic coil installation process and the control accuracy of the distance between the inner and outer layers. In addition, when the magnetic conductor pipeline has a bent structure that causes uneven coil winding, an auxiliary support can be used to handle it. For example, the auxiliary support can be placed inside the bend of the magnetic conductor pipeline to expand the winding area inside, so that the magnetic conductor pipeline at the bend can be fully and evenly wound by the electromagnetic coil, fully heating and exchanging heat with the fluid, improving the temperature rise of the fluid, making the heating of the magnetic conductor pipeline more uniform in the straight section and the bend section, with a smaller temperature difference, and extending the overall life of the magnetic conductor pipeline.

[0025] A temperature control method for an electromagnetic servo oil temperature controller involves using a temperature sensor to monitor the oil temperature in real time, connecting the temperature sensor signal to a controller, and electrically connecting the temperature controller to a frequency converter. The frequency converter is used to power the electromagnetic coil.

[0026] The workflow is as follows: set the target temperature and run the electromagnetic servo oil temperature controller; the temperature sensor measures the current temperature; the controller calculates the temperature difference between the current temperature and the set target temperature; the controller controls the frequency converter to output the adjusted power; the temperature sensor measures the current temperature again and repeats the above cycle.

[0027] By adopting the above technical solution, the oil temperature can be accurately obtained by using a temperature sensor to monitor the oil temperature in real time. The temperature sensor signal is connected to the controller, and the controller is electrically connected to the frequency converter to power the electromagnetic coil. The power output of the frequency converter can be adjusted according to the temperature difference between the set target temperature and the current temperature to achieve servo control. That is, the power is supplied only as needed, and the heating power is dynamically adjusted with the temperature, making the temperature change smoother, reducing energy consumption, and stabilizing the temperature of the heat transfer oil at the set temperature.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. Applying electromagnetic heating technology to the field of high-temperature oil temperature controllers, heat is generated directly on the pipe wall of the magnetic conductor pipeline, resulting in high thermal efficiency and a comprehensive power saving rate of over 30%, thus reducing energy consumption;

[0030] 2. The magnetic conductor tube is not in direct contact with the electromagnetic coil, the electromagnetic coil itself does not generate heat, and there is an insulation layer between the magnetic conductor tube and the electromagnetic coil for heat insulation;

[0031] 3. The winding section makes the magnetic conductor pipeline more concentrated. The use of electromagnetic coils to wind the winding section makes the heating area more concentrated, the magnetic line density is higher, and the space occupied is smaller. Moreover, the electromagnetic coil will not increase resistance and heat loss due to excessive length, thus reducing efficiency.

[0032] 4. The branch section includes several parallel and parallel magnetic conductor branch pipes, which can heat the heat transfer oil through multiple paths in the parallel direction, further increasing the heating area and improving the heating efficiency.

[0033] 5. Metal flow guide grids and metal flow guide springs can increase turbulence during fluid transport, making heat exchange more uniform during fluid transport and heating. They are also heated to increase the heat exchange area between the fluid and the magnetic conductor pipeline, thereby improving the heat exchange effect.

[0034] 6. The auxiliary support can improve the convenience of the installation process of the double-layer electromagnetic coil and the control accuracy of the distance between the inner and outer layers. It can also make the magnetic conductor pipeline at the bend evenly wound by the electromagnetic coil, improve the heating effect of the fluid, make the straight section and the bend section of the magnetic conductor pipeline more evenly heated, and extend its service life.

[0035] 7. A closed-loop intelligent control system for electromagnetic heating is constructed using temperature sensors, controllers, and frequency converters. This system can dynamically adjust the power of the electromagnetic coil according to the oil temperature, resulting in smoother temperature changes and reduced energy consumption. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0037] Figure 2 This is a schematic diagram illustrating the connection between the insulation layer and the electromagnetic coil in the embodiments of this application;

[0038] Figure 3 This is a schematic diagram illustrating the connection relationship between the branch segment and the input and output pipes in an embodiment of this application;

[0039] Figure 4 This is a schematic diagram illustrating the connection between the winding section and the magnetic conductor pipeline in the embodiments of this application;

[0040] Figure 5 This is a schematic diagram illustrating the connection relationship between the winding section and the input and output pipes in the embodiments of this application. Figure 1 ;

[0041] Figure 6This is a schematic diagram illustrating the connection relationship between the winding section and the input and output pipes in the embodiments of this application. Figure 2 ;

[0042] Figure 7 This is a schematic diagram illustrating the square arrangement of the magnetic conductor branch pipes in the embodiments of this application;

[0043] Figure 8 This is a schematic diagram illustrating the structure of the magnetic conductor branch pipes arranged in a ring shape in the embodiments of this application;

[0044] Figure 9 This is a schematic diagram illustrating the connection between the metal flow guide grid plate and the magnetic conductor pipeline in an embodiment of this application;

[0045] Figure 10 This is a structural schematic diagram illustrating the connection relationship between adjacent metal flow guide grilles in an embodiment of this application;

[0046] Figure 11 This is a schematic diagram illustrating the connection between the metal current-guiding spring and the magnetic conductor pipeline in the embodiments of this application;

[0047] Figure 12 This is a schematic diagram illustrating the connection between the electromagnetic coil and the auxiliary support in an embodiment of this application.

[0048] In the picture:

[0049] 1. Chassis; 11. Input pipe; 12. Output pipe; 13. Output pump; 14. Motor;

[0050] 2. Heating module; 21. Magnetic conductor pipeline; 22. Insulation layer; 23. Electromagnetic coil;

[0051] 3. Winding section;

[0052] 4. Branch section; 41. Magnetic conductor branch pipe;

[0053] 5. Metal flow guide grille; 50. Flow guide holes;

[0054] 6. Metal flow guide spring;

[0055] 7. Auxiliary support; 71. Support leg; 72. Support rod; 73. Support. Detailed Implementation

[0056] The technical solutions in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of the present invention, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of the present invention without creative effort are also within the protection scope of the present invention.

[0057] This application mainly uses electromagnetic heating of heat transfer oil and intelligent temperature control, which achieves the effects of improving heating efficiency, reducing energy consumption, and precise temperature control. The following is a further detailed description of this application.

[0058] Example

[0059] The electromagnetic servo oil temperature controller provided in this embodiment includes a chassis 1, an input pipe 11, a heating module 2, an output pipe 12, an output pump 13, a motor 14, a temperature sensor, and a controller. The input pipe 11, heating module 2, and output pipe 12 are connected sequentially. The output pump 13 and motor 14 are located between the output pipe 12 and the magnetic conductor pipe 21. A temperature sensor is installed inside the output pipe 12, and the temperature sensor signal is connected to the controller. The controller is electrically connected to the electromagnetic coil 23. This structural layout allows the heat transfer oil to flow smoothly and adjusts the heating power in real time according to the oil temperature, achieving precise temperature control. It also avoids the problems of multiple intermediate steps, low heat transfer efficiency, and high energy consumption associated with traditional resistance heating methods.

[0060] Specifically, chassis 1 includes an outer shell and an internal mounting frame. The outer shell of chassis 1 is typically made of metal, such as steel plate, providing strength and protection to safeguard internal components from external environmental influences. The mounting frame is used to secure components such as the input pipe 11, heating module 2, and output pipe 12. Its structure is designed according to the layout of each component, ensuring stable installation and ease of maintenance. In some special working environments, the outer shell of chassis 1 can also undergo anti-corrosion and dustproof treatments to meet different usage requirements.

[0061] Specifically, the input pipe 11 is generally made of metal, such as stainless steel, which has good corrosion resistance and sealing properties. One end of the input pipe 11 is connected to the heat transfer oil storage container, and the other end is connected to the magnetic conductor pipe 21 of the heating module 2. The connection method can be welding, flange connection, etc., to ensure a firm connection and no leakage. The diameter of the input pipe 11 is selected according to the flow rate and velocity of the heat transfer oil to ensure that the heat transfer oil can smoothly enter the heating module 2.

[0062] The heating module 2 includes an internal magnetic conduit pipe 21 for conveying heat transfer oil, an insulation layer 22 covering the outside of the magnetic conduit pipe 21, and an electromagnetic coil 23 wound around the outside of the insulation layer 22. The magnetic conduit pipe 21 is made of carbon steel, which has good magnetic permeability and can generate heat efficiently under the magnetic field generated by the electromagnetic coil 23. Of course, other metal pipes with magnetic permeability, such as iron pipes, can also be used. Both ends of the magnetic conduit pipe 21 are provided with connection ports for connecting to the input pipe 11 and the output pipe 12. The connection ports can use common connection methods such as flange connections and threaded connections.

[0063] The insulation layer 22 is made of high-temperature resistant insulating materials, such as aerogel, glass fiber, ceramic fiber, and rock wool. These materials not only withstand high temperatures but also have excellent insulation properties, preventing electrical leakage. The insulation layer 22 tightly wraps around the outside of the magnetic conductor conduit 21. Its thickness is determined according to actual needs. Generally, a thicker insulation layer 22 provides better insulation, but it increases cost and space requirements. The insulation layer 22 can be fixed to the magnetic conductor conduit 21 by wrapping, wrapping, or other methods.

[0064] The electromagnetic coil 23 is made of a metal wire with good conductivity, such as copper wire. Copper wire has the characteristics of low resistance and high conductivity, which can reduce power loss. The electromagnetic coil 23 is wound on the outside of the insulation layer 22. The number and density of its windings are designed according to the heating requirements. The more turns and the greater the density, the stronger the magnetic field generated and the better the heating effect. The two ends of the electromagnetic coil 23 are connected to a power source. When energized, it generates an alternating magnetic field, which induces a current in the magnetic conductor tube 21, thereby generating heat.

[0065] The output pipe 12 includes an oil outlet pipe. The output pipe 12 is also made of metal, such as stainless steel, with one end connected to the magnetic conductor pipe 21 of the heating module 2, and the other end connected to the equipment requiring the heat transfer oil or the storage container for the heat transfer oil. A temperature sensor is installed inside the output pipe 12 to monitor the temperature of the heat transfer oil at the output end in real time. The temperature sensor can be a PT100 platinum resistance thermometer, a thermocouple, etc., which has high measurement accuracy and reliability. The temperature sensor is connected to the controller via a signal line, transmitting the measured temperature signal to the controller. In addition, temperature sensors can also be installed inside the heating module 2 and the input pipe 11 as needed. An alarm can be triggered to prompt maintenance if the temperature of the heating module 2 is abnormal. The fluid temperature in the input pipe 11 is used in conjunction with the fluid temperature in the output pipe 12 to assist in calculations to further adjust the output power.

[0066] The output pump 13 and motor 14 are configured such that the output pump 13 drives the heat transfer oil to circulate within the system. The type of pump body can be selected according to actual needs, such as a high-temperature pump, a magnetic pump, or a high-temperature resistant pump. The drive motor 14 provides power to the output pump 13, and its power is matched according to the pump's flow rate and head. The output pump 13 and motor 14 are connected via couplings or belts to ensure stable power transmission.

[0067] The temperature sensor consists of a sensing element and a signal transmission line. Installed inside output pipe 12, the temperature sensor accurately measures the temperature of the heat transfer oil. The sensing element converts the temperature signal into an electrical signal, which is then transmitted to the controller via the signal transmission line. The accuracy and response speed of the temperature sensor are crucial to the performance of the entire temperature control system; therefore, a reliable product must be selected.

[0068] The controller includes control circuitry and a microprocessor. It receives temperature signals from a temperature sensor, compares them with a set target temperature, and calculates the temperature difference. Then, based on this temperature difference, the controller outputs a power adjustment command, controlling the electromagnetic coil 23 to operate at the new power. The controller can be a PID controller, either a standalone temperature controller or an algorithm within the microcontroller. The controller is electrically connected to the electromagnetic coil 23 via wires, enabling precise control of the electromagnetic coil 23's power.

[0069] The combined logic of heating module 2, output pump 13 and motor 14, temperature sensor and controller is as follows: Heating module 2 uses the principle of electromagnetic induction to heat the magnetic conductor pipe 21, thereby heating the heat transfer oil; output pump 13 and motor 14 provide power to circulate the heat transfer oil in the system; the temperature sensor monitors the temperature of the heat transfer oil in real time and transmits the signal to the controller; the controller adjusts the power of electromagnetic coil 23 according to the temperature signal to achieve precise control of the oil temperature. This combination enables the entire system to operate efficiently and stably, improves heating efficiency, reduces energy consumption, and ensures precise control of the oil temperature.

[0070] Reference Figure 4 , 5 6. In one embodiment, the magnetic conductor tube 21 has a winding section 3, and the electromagnetic coil 23 is wound around the circumference of the winding section 3. The winding arrangement makes the magnetic conductor tube 21 more concentrated, and the use of the electromagnetic coil 23 to wind the winding section 3 makes the heating area more concentrated, the magnetic line density higher, and the space occupied smaller. Moreover, the electromagnetic coil 23 will not increase resistance and heat loss due to excessive length, thus reducing efficiency. The end projection of the winding section 3 can be annular, such as circular, elliptical, etc., and the final outer edge contour of the winding section 3 is cylindrical. The circular winding section 3 has better applicability in some applications with high requirements for heating uniformity, can better meet specific industrial production needs, and can also reduce equipment damage and increased energy consumption caused by local overheating or uneven heating, thereby improving the reliability and stability of the entire heating system. The winding section 3 can be manufactured by bending, shaping, and other processes of the magnetic conductor tube 21. During the manufacturing process, the sealing and connection strength of the tube must be ensured.

[0071] In other embodiments, the end projection of the winding segment 3 can also be polygonal, such as a rectangle or rhombus, and the final outer contour of the winding segment 3 is cuboid or polygonal prism. This polygonal structure facilitates installation and fixation, and can make better use of space in some space-constrained situations.

[0072] Reference Figure 7 and Figure 8In other feasible implementations, the magnetic conductor pipe 21 has a branch section 4, and the electromagnetic coil 23 is wound along the length of the branch section 4. The branch section 4 includes several parallel magnetic conductor branch pipes 41, which are distributed in parallel. The branch section 4 increases the flow area and heating area of ​​the heat transfer oil, thereby improving heating efficiency. The magnetic conductor branch pipes 41 can be connected to the main pipe by welding, flange connection, or other methods to ensure a firm connection and good sealing. The branch section 4 is U-shaped. This distribution makes the magnetic conductor pipe 21 non-closed, with gaps, which facilitates the installation of other components in conjunction with the structure of the casing 1 and makes it easier to make room. In addition, this structure has fewer bends when the electromagnetic coil 23 is wound, so the winding density is easier to control. The U-shaped branch section 4 can be made by bending the magnetic conductor pipe 21. During the manufacturing process, care must be taken to ensure the curvature and dimensional accuracy of the pipe. The distribution of the several magnetic conductor branch pipes 41 can be in a ring shape or a square array. The distributed magnetic conductor branch tube 41 results in a more uniform magnetic field distribution and a more stable heating effect. The magnetic conductor branch tube 41 can be fixed by means of brackets or other means to ensure its relative position is stable.

[0073] Reference Figure 9 and Figure 10 The magnetic conductor pipe 21 is internally equipped with a metal flow guide grid plate. The metal flow guide grid plate 5 comprises several sequentially connected plates with adjacent plates tilting in opposite directions. Each plate surface has flow guide holes 50. The outer edges of the plates match the inner edges of the magnetic conductor pipe 21. During the actual flow of fluid through the metal flow guide grid plate 5, the fluid first changes its direction of travel due to the changing tilt angles of the plates. Secondly, upon passing through the flow guide holes 50, the sudden reduction in the flow cross-sectional area leads to a faster flow velocity at the flow guide holes 50, further enhancing the turbulence effect and improving the uniformity of heat distribution throughout the fluid. Furthermore, the metal flow guide grid plate 5 also increases the heat exchange area between the magnetic conductor pipe 21 and the fluid, resulting in higher heating efficiency. The metal flow guide grid plate is typically made of metal materials, such as stainless steel, which has good corrosion resistance and thermal conductivity.

[0074] Reference Figure 11A metal flow-guiding spring 6 is installed inside the magnetic conductor tube 21, and the metal flow-guiding spring 6 is distributed in a spiral shape inside the magnetic conductor tube 21. The metal flow-guiding spring 6 can increase the turbulence during the fluid transportation process, so that the fluid is transported in a roughly spiral state, making the heat exchange more uniform during the fluid transportation and heating process. In addition, the metal flow-guiding spring 6 is also heated under electromagnetic action, thereby further increasing the heat exchange area between the fluid and the magnetic conductor tube 21, and further improving the heat exchange effect. The metal flow-guiding spring 6 is fixed to the inner wall of the magnetic conductor tube 21 at intervals, that is, the spring between two adjacent fixed points has a certain degree of freedom. During transportation, it vibrates slightly, further increasing the turbulence of the fluid, and can also help to scrape the inside of the magnetic conductor tube 21, and cause slight vibration of the magnetic conductor tube 21, so that it is not easy for scale to form inside the magnetic conductor tube 21, which is conducive to maintaining a better heat exchange efficiency. The metal flow-guiding spring 6 can be made of stainless steel or other metal materials, which have good corrosion resistance and elasticity.

[0075] Reference Figure 12 An auxiliary support 7 is provided between the insulation layer 22 and the electromagnetic coil 23. The auxiliary support 7 includes a support leg 71, a support rod 72, and a support 73 arranged sequentially from bottom to top. The support leg 71 abuts against the outside of the insulation layer 22. The electromagnetic coil 23 is divided into inner and outer layers. The support rod 72 is located between adjacent winding layers of the inner electromagnetic coil 23. The support 73 is used to support the outer electromagnetic coil 23. When it is necessary to arrange double-layer electromagnetic coils 23, they can be wound with the help of the auxiliary support 7. The inner electromagnetic coil 23 will clamp the support rod 72 and hold the support leg 71 tightly, thus ensuring the stability of the auxiliary support 7. In addition, the outer electromagnetic coil 23 can be directly wound inside the support 73. The support 73 is U-shaped, so the outer electromagnetic coil 23 is not easy to slip off. The distance between the inner and outer coils can be customized by the length of the support rod 72. Therefore, the auxiliary support 7 can improve the convenience of the installation process of double-layer electromagnetic coils 23 and the control accuracy of the distance between the inner and outer layers. Furthermore, when the magnetic conductor tube 21 has a bent structure, that is, when there is a large difference between the inner and outer areas during the winding process, resulting in uneven coil winding, the auxiliary support 7 can be used to address this issue. For example, the auxiliary support 7 can be placed inside the bend of the magnetic conductor tube 21 to expand the inner winding area, thereby making better use of the bend of the magnetic conductor tube 21. This allows the bend of the magnetic conductor tube 21 to be evenly wound by the electromagnetic coil 23, ensuring that the bend of the magnetic conductor tube 21 can be fully heated and heat exchanged with the fluid. This improves the fluid's heating effect and makes the heating of the magnetic conductor tube 21 more uniform in both the straight and bent sections, with a smaller temperature difference, thus extending the overall lifespan of the magnetic conductor tube.

[0076] The implementation principle of this embodiment is as follows: This electromagnetic servo oil temperature controller applies electromagnetic heating technology to the field of high-temperature oil temperature controllers. The alternating magnetic field generated by the electromagnetic coil 23 heats the magnetic conductor pipe 21, with heat generated directly on the pipe wall, resulting in extremely high thermal efficiency. Simultaneously, a temperature sensor monitors the oil temperature in real time, and a controller adjusts the power of the electromagnetic coil 23, achieving precise oil temperature control and avoiding the problems of inaccurate temperature control and high energy consumption associated with traditional resistance heating methods. The inclusion of the winding section 3, branch section 4, metal flow guide grille, metal flow guide spring 6, and auxiliary support 7 further optimizes the heating effect, improves heat exchange efficiency, reduces scale formation, and extends the equipment's service life. Compared to traditional resistance heating methods, the overall energy saving rate can typically reach over 30%, demonstrating significant economic and social benefits.

[0077] This application also provides a temperature control method for an electromagnetic servo oil temperature controller, comprising the following steps:

[0078] S1, Set the target temperature and run the electromagnetic servo oil temperature controller. The operator sets the target temperature the heat transfer oil needs to reach on the controller according to actual production requirements. Then, the electromagnetic servo oil temperature controller is started, and the system begins operation. The heat transfer oil enters the heating module 2 through the input pipe 11.

[0079] S2, Temperature sensor measures the current temperature. The temperature sensor, installed inside output pipe 12, monitors the temperature of the heat transfer oil in real time and transmits the measured temperature signal to the controller via a signal line. A high-precision PT100 platinum resistance thermometer or thermocouple can be selected as the temperature sensor to ensure the accuracy of the measurement results.

[0080] S3, the controller calculates the temperature difference between the current temperature and the set target temperature. After receiving the temperature signal from the temperature sensor, the controller compares it with the set target temperature and calculates the temperature difference between the two. The controller uses a PID control algorithm to accurately calculate the power adjustment required based on the temperature difference.

[0081] S4, the controller controls the variable frequency power supply to output adjusted power. Based on the calculated temperature difference, the controller outputs a power adjustment command, controlling the variable frequency power supply to output a corresponding high-frequency (e.g., 10-30kHz) and current, so that the electromagnetic coil 23 operates at the new power. The variable frequency power supply can quickly and accurately adjust its output power according to the controller's commands to meet the requirements of oil temperature control.

[0082] S5, the temperature sensor measures the current temperature again and repeats the aforementioned cycle. The temperature sensor continuously monitors the temperature of the heat transfer oil, transmits the new temperature signal to the controller, the controller calculates the temperature difference again and adjusts the power, and so on, to achieve real-time and precise control of the oil temperature.

[0083] The implementation principle of this embodiment is as follows: The temperature control method of the electromagnetic servo oil temperature controller in this embodiment monitors the oil temperature in real time through a temperature sensor and uses a PID controller to adjust the power of the electromagnetic coil 23 according to the temperature difference, thereby realizing closed-loop feedback control of the oil temperature. This control method can adjust the heating power in a timely manner according to the actual oil temperature changes, avoiding the problems of inaccurate temperature control and high energy consumption of traditional resistance heating methods. Through continuous cyclic adjustment, the oil temperature can be quickly and stably reached and maintained at the set target temperature, improving the heat transfer efficiency in the production process, ensuring production stability and product quality, while reducing energy consumption, resulting in significant economic and social benefits.

[0084] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electromagnetic servo oil temperature controller, characterized in that: The device includes a chassis (1), which is provided with an input pipe (11), a heating module (2) and an output pipe (12) connected in sequence. The heating module (2) includes a magnetic conductor pipe (21) inside for conveying heat transfer oil. The magnetic conductor pipe (21) is covered with a heat insulation layer (22) on the outside. An electromagnetic coil (23) is wound around the outside of the heat insulation layer (22).

2. The electromagnetic servo oil temperature controller according to claim 1, characterized in that: The magnetic conductor conduit (21) has a winding section (3), and the electromagnetic coil (23) is arranged circumferentially along the winding section (3).

3. The electromagnetic servo oil temperature controller according to claim 1, characterized in that: The magnetic conductor pipe (21) has a branch section (4), and the electromagnetic coil (23) is wound along the length of the branch section (4). The branch section (4) includes several parallel magnetic conductor branches (41).

4. The electromagnetic servo oil temperature controller according to claim 1, characterized in that: The insulation layer (22) is made of high-temperature resistant insulating material.

5. The electromagnetic servo oil temperature controller according to claim 1, characterized in that: An output pump (13) and a motor (14) are provided between the output pipe (12) and the magnetic conductor pipe (21).

6. The electromagnetic servo oil temperature controller according to claim 1, characterized in that: The output tube (12) is equipped with a temperature sensor. The temperature sensor signal is connected to a controller. The controller is connected to a power driver. The driver is electrically connected to an electromagnetic coil (23).

7. An electromagnetic servo oil temperature controller according to claim 1, characterized in that: The magnetic conductor pipeline (21) is provided with a metal flow guide grid plate inside. The metal flow guide grid plate (5) includes several plates connected in sequence. The inclination directions of adjacent plates are opposite, and the surfaces of several plates are provided with flow guide holes (50).

8. An electromagnetic servo oil temperature controller according to claim 1, characterized in that: The magnetic conductor pipe (21) is provided with a metal current-guiding spring (6), which is spirally distributed inside the magnetic conductor pipe (21).

9. An electromagnetic servo oil temperature controller according to claim 1, characterized in that: An auxiliary support (7) is provided between the insulation layer (22) and the electromagnetic coil (23). The auxiliary support (7) includes a support leg (71), a support rod (72), and a support (73) arranged sequentially from bottom to top. The support leg (71) abuts against the outside of the insulation layer (22). The electromagnetic coil (23) is divided into inner and outer layers. The support rod (72) is located between adjacent winding layers of the inner electromagnetic coil (23). The support (73) is used to support the outer electromagnetic coil (23).

10. A temperature control method for an electromagnetic servo oil temperature controller, characterized in that: The oil temperature is monitored in real time using a temperature sensor. The temperature sensor signal is connected to the controller, and the temperature controller is connected to the frequency converter. The frequency converter is used to power the electromagnetic coil (23). The workflow is as follows: set the target temperature and run the electromagnetic servo oil temperature controller; the temperature sensor measures the current temperature; the controller calculates the temperature difference between the current temperature and the set target temperature; the controller controls the frequency converter to output the adjusted power; the temperature sensor measures the current temperature again and repeats the above cycle.

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