High-voltage electromagnetic balance power-saving protection device

Abstract

The application belongs to the technical field of power devices, and discloses a high-voltage electromagnetic balance power-saving protection device, which comprises a cabinet body, electrical control chambers and electromagnetic regulation chambers are arranged on the two sides of the inner end of the cabinet body, a group of three-phase electromagnetic balance iron core groups arranged in an equilateral triangle are assembled in the electromagnetic regulation chambers, and the electromagnetic regulation chambers are matched with self-adaptive ventilation adjusting assemblies, wherein the self-adaptive ventilation adjusting assemblies can passively respond to the real-time temperature change of the three-phase electromagnetic balance iron core groups by relying on the memory alloy thermal deformation characteristics of the temperature-variable expansion rods, the ventilation section is automatically enlarged to improve the heat dissipation efficiency under the high-temperature state, and the ventilation section is automatically narrowed to reduce the cold air loss under the low-temperature state, without external electric control elements and sensing devices, so that the overall structure of the device is simplified, the heat dissipation adaptability of the device under different load working conditions is greatly improved, and the problems of high-temperature heat accumulation and low-temperature condensation of the iron core are effectively avoided.

Description

Technical Field

[0001] This invention belongs to the field of power equipment technology, specifically a high-voltage electromagnetic balance energy-saving protection device. Background Technology

[0002] The high-voltage electromagnetic balance energy-saving protection device is a power quality optimization and energy-saving protection device applied to high-voltage power distribution systems. It works based on the principles of three-phase iron core electromagnetic balance, electromagnetic compensation, and voltage stabilization. The device integrates a cabinet, an electrical control chamber, and an electromagnetic regulation chamber. It can correct the imbalance of three-phase loads in the power grid in real time, suppress voltage fluctuations and reactive power loss in the lines, and improve the power factor of the power distribution system. It is widely used in high-voltage power consumption scenarios such as industrial and mining enterprises and building power distribution, and has the dual functions of power grid management and equipment overload protection.

[0003] For example, a high- and low-voltage power distribution energy-saving device with electromagnetic balance, disclosed in CN117674146A, includes a power distribution energy-saving device body and a housing. The power distribution energy-saving device body has an internal cavity. It can fine-tune the user's power consumption through induction winding and recover excess electrical energy to achieve energy reuse, thereby achieving high efficiency and energy saving. The matching of the three-phase reactor winding and the induction winding, as well as the connection form of the induction winding, can enhance energy saving. Through the above technical solution, the problems of insignificant energy saving effect, easy burnout of motor equipment, and inconvenience of disassembly and maintenance in related technologies are solved.

[0004] While the above solutions can address the issues of insignificant energy-saving effects, easy burnout of motor equipment, and inconvenience in disassembly and maintenance in related technologies, the core heat dissipation structure of existing high-voltage electromagnetic balance energy-saving protection devices mostly adopts a fixed ventilation channel structure. The size of the ventilation opening remains fixed after the equipment is assembled, and it cannot be dynamically adjusted according to the real-time operating temperature of the core and the load conditions. The overall heat dissipation adaptability is poor. In particular, the core temperature rises rapidly and accumulates a lot of heat under heavy grid operation conditions. The fixed ventilation section is difficult to meet the instantaneous high-intensity heat dissipation demand, which can easily cause local high temperature accumulation in the core, thereby affecting the electromagnetic working stability of the core and the overall energy-saving efficiency. Under light load or standby low temperature conditions, the fixed ventilation channel will continuously introduce excessive cooling air, which not only wastes cold air resources, but also causes low-temperature cold air to continuously contact the core surface, which can easily form condensation on the outer wall of the core and inside the air duct. Summary of the Invention

[0005] To address the problems mentioned in the background section, the present invention provides a high-voltage electromagnetic balance energy-saving protection device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-voltage electromagnetic balance energy-saving protection device, comprising a cabinet, wherein an electrical control chamber and an electromagnetic control chamber are respectively provided on both sides of the inner end of the cabinet, and a set of three-phase electromagnetic balance iron cores arranged in an equilateral triangle are assembled inside the electromagnetic control chamber, and triangular brackets are symmetrically installed at the upper and lower ends of the set of three-phase electromagnetic balance iron cores; the device also includes: an adaptive ventilation adjustment component that cooperates with the three-phase electromagnetic balance iron cores, used to adaptively adjust the ventilation and heat dissipation flux according to the temperature of the three-phase electromagnetic balance iron cores; and a wind-blocking and airflow guiding component is also assembled on the outside of the three-phase electromagnetic balance iron cores, used to realize independent air duct separation and hot air flow guidance for each core group;

[0007] The adaptive ventilation adjustment component includes a circular cylinder independently arranged below each three-phase electromagnetic balance iron core assembly to form a vertical independent ventilation cavity. An open-type ventilation baffle is fixedly connected to the upper inner end of the circular cylinder. A hollow lifting plate is vertically slidably assembled inside the circular cylinder and below the open-type ventilation baffle. A strip rod is fixedly connected to the center of the bottom end of the hollow lifting plate. The two ends of the strip rod extend out of the outer side of the circular cylinder, and temperature-sensitive telescopic rods are vertically fixedly installed at the top of each end. The top ends of the two temperature-sensitive telescopic rods are jointly assembled with a circular collar fitted on the outer side of the three-phase electromagnetic balance iron core assembly. Support strips are symmetrically fixed to both ends of the circular collar. Several conical plugs are uniformly fixed on the upper surface of the hollow lifting plate.

[0008] Preferably, a refrigeration ventilation main pipe communicating with the interior of the electromagnetic control chamber is fixedly installed at the bottom of the cabinet. A refrigeration ventilation pipe extending out of the cabinet is fixedly installed inside the electromagnetic control chamber and above the three-phase electromagnetic balance iron core assembly. A pump is connected to the outside of the refrigeration ventilation main pipe.

[0009] Preferably, the main cooling ventilation pipe and the cooling ventilation exhaust pipe are interconnected to form a bottom-up directional ventilation duct, which is used to cooperate with the adaptive ventilation adjustment component to achieve directional convection heat dissipation of the three-phase electromagnetic balance iron core assembly.

[0010] Preferably, the windbreak and airflow separation component includes a baffle frame plate covering the outside of the three-phase electromagnetic balance iron core assembly, the baffle frame plate separating each three-phase electromagnetic balance iron core assembly to form an independent sealed heat dissipation cavity.

[0011] Preferably, the sidewall of the enclosure frame is provided with a plurality of guide grooves, which are arranged obliquely along the wall of the enclosure frame to regulate the flow of hot air in the cavity and guide the hot air to be discharged upward.

[0012] Preferably, the cylindrical tube has symmetrical vertical grooves on its left and right sides, and the two ends of the strip rod are slidably limited inside the corresponding vertical grooves and can slide vertically along the groove, so as to guide the overall vertical movement of the hollow lifting plate.

[0013] Preferably, the temperature-sensitive telescopic rod is integrally molded from shape memory alloy material, and the temperature-sensitive telescopic rod undergoes axial expansion and contraction deformation as the temperature of the three-phase electromagnetic balance iron core assembly rises.

[0014] Preferably, the perforated ventilation baffle has multiple ventilation holes on its surface, and the conical plug has a truncated cone structure that is narrow at the top and wide at the bottom, with each conical plug corresponding vertically to the ventilation hole of the perforated ventilation baffle.

[0015] Preferably, when the hollowed-out lifting plate rises, the conical plug is inserted into the ventilation hole to narrow the ventilation cross section, and when the hollowed-out lifting plate falls, it moves away from the ventilation hole to expand the ventilation hole.

[0016] Preferably, the support strips are symmetrically arranged along both sides of the circular collar, with one end of the support strip connected to the circular collar and the other end connected to the enclosure frame plate, forming a support base structure between the temperature-sensitive telescopic rod and the circular collar.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] This invention utilizes the cooperation between an electromagnetic control chamber and an adaptive ventilation adjustment component. The adaptive ventilation adjustment component relies on the shape memory alloy thermal deformation characteristics of the temperature-changing telescopic rod to passively respond to the real-time temperature changes of the three-phase electromagnetic balance iron core assembly. Under high temperature conditions, it automatically expands the ventilation cross-section to improve heat dissipation efficiency, and under low temperature conditions, it automatically narrows the ventilation cross-section to reduce cold air loss. It does not require external electrical control components and sensing devices, which simplifies the overall structure of the equipment and greatly improves the heat dissipation adaptability of the equipment under different load conditions. It effectively avoids the problems of high temperature heat accumulation and low temperature condensation of the iron core, and continuously ensures the working stability of the three-phase electromagnetic balance iron core assembly.

[0019] This invention, by setting up a windbreak and airflow guiding and separating component, can physically separate and regulate the airflow of three sets of three-phase electromagnetic balance iron cores, completely changing the drawbacks of traditional three-phase iron cores sharing a heat dissipation cavity and mutual airflow interference. At the same time, the enclosure frame can divide each phase of the three-phase electromagnetic balance iron core into an independent and sealed heat dissipation space, avoiding the baking of adjacent low-temperature iron core structures by single-phase high-temperature hot air, thereby reducing the working temperature difference of the three-phase iron cores. Furthermore, the guide grooves inclined on the side wall of the enclosure frame can directionally rectify the turbulent hot air in the cavity, guiding the hot air after heat exchange to be discharged upward in an orderly manner, reducing the accumulation of hot air eddies inside the cavity, and further improving the overall heat dissipation uniformity. Meanwhile, the independent cavity structure can adapt to the unbalanced three-phase load of the power grid, realizing targeted independent heat dissipation adjustment of each phase iron core, greatly improving the overall operational reliability and adaptability of the equipment.

[0020] This invention constrains the sliding trajectory of the bar rod throughout its entire movement by setting a vertical sliding groove, limiting the lateral swaying and positional deviation of the bar rod, and ensuring that the hollow lifting plate rises and falls smoothly along the vertical direction throughout its entire movement. The regular sliding motion ensures that the conical plug and the ventilation holes of the perforated ventilation partition are always precisely aligned, ensuring the continuity and accuracy of the expansion and narrowing of the ventilation section. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the cabinet of the present invention;

[0022] Figure 2 This is a partially truncated enlarged schematic diagram of the electromagnetic control chamber structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the three-phase electromagnetic balance iron core assembly structure of the present invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of a partial truncation of the structure at point A;

[0025] Figure 5 For the present invention Figure 3 Enlarged schematic diagram of a partial truncation of the structure at point B in the middle section;

[0026] Figure 6 This is a schematic cross-sectional view of the circular cylinder structure of the present invention.

[0027] In the diagram: 1. Cabinet; 2. Electrical control chamber; 3. Electromagnetic control chamber; 4. Three-phase electromagnetic balance iron core assembly; 5. Triangular bracket; 6. Adaptive ventilation adjustment component; 600. Circular cylinder; 601. Perforated ventilation partition; 602. Hollowed-out lifting plate; 603. Strip rod; 604. Temperature-sensitive telescopic rod; 605. Circular collar; 606. Support strip; 607. Conical plug; 608. Refrigeration ventilation main pipe; 609. Refrigeration ventilation duct; 7. Windbreak and airflow guiding partition component; 700. Enclosure frame; 701. Airflow guide groove; 8. Vertical slide groove. Detailed Implementation

[0028] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1 to 6As shown, this invention provides a high-voltage electromagnetic balance energy-saving protection device, including a cabinet 1. An electrical control chamber 2 and an electromagnetic control chamber 3 are respectively arranged on both sides of the inner end of the cabinet 1. The electromagnetic control chamber 3 is equipped with a set of three-phase electromagnetic balance iron core groups 4 arranged in an equilateral triangle. Triangular brackets 5 are symmetrically installed at the upper and lower ends of each set of three-phase electromagnetic balance iron core groups 4. The device also includes an adaptive ventilation adjustment component 6 that cooperates with the three-phase electromagnetic balance iron core groups 4, used to automatically adjust ventilation according to the temperature of the three-phase electromagnetic balance iron core groups 4. The ventilation and heat dissipation flux should be adjusted. A windbreak and airflow guiding component 7 is also installed on the outside of the three-phase electromagnetic balance iron core assembly 4 to achieve independent airflow separation and hot air guidance for each core assembly. The adaptive ventilation adjustment component 6 includes a circular cylinder 600 independently arranged below each three-phase electromagnetic balance iron core assembly 4 to form a vertically independent ventilation cavity. An open-type ventilation baffle 601 is fixedly connected to the upper side of the inner end of the circular cylinder 600. A hollow lifting mechanism is vertically slidably installed inside the circular cylinder 600 and below the open-type ventilation baffle 601. A strip rod 603 is fixedly connected to the center of the bottom of the perforated lifting plate 602. Both ends of the strip rod 603 extend outwards from the outer side of the circular cylinder 600, and temperature-sensitive telescopic rods 604 are vertically fixedly installed at the top of each end. A circular collar 605, fitted onto the outer side of the three-phase electromagnetic balance iron core assembly 4, is mounted at the top of both ends of the circular collar 605. Support strips 606 are symmetrically fixed to both ends of the circular collar 605. Several conical plugs 607 are evenly fixed to the upper surface of the perforated lifting plate 602. Cabinet 1 The bottom end is fixedly equipped with a cooling ventilation main pipe 608 that communicates with the interior of the electromagnetic control chamber 3. Inside the electromagnetic control chamber 3 and above the three-phase electromagnetic balance iron core assembly 4, a cooling ventilation pipe 609 extending out of the cabinet 1 is fixedly installed. A pump is connected to the cooling ventilation main pipe 608. The cooling ventilation main pipe 608 and the cooling ventilation pipe 609 are interconnected and form a bottom-up directional ventilation duct, which is used to cooperate with the adaptive ventilation adjustment component 6 to achieve directional convection heat dissipation of the three-phase electromagnetic balance iron core assembly 4.

[0030] The above scheme is adopted: the electrical control chamber 2 integrates the electrical control components required for the whole equipment, and the electromagnetic regulation chamber 3 serves as the dedicated installation cavity for the three-phase electromagnetic balance iron core group 4 and the adaptive ventilation regulation component 6. It can realize the partitioned arrangement of the heat dissipation structure and the electrical regulation structure, effectively avoid the interference of heat dissipation airflow and structural movement on the electrical control circuit, and improve the overall insulation safety and structural layout rationality of the equipment.

[0031] like Figures 2 to 6As shown, the windbreak and flow guiding separation component 7 includes a baffle frame 700 covering the outside of the three-phase electromagnetic balance iron core group 4. The baffle frame 700 separates each group of three-phase electromagnetic balance iron core groups 4 to form independent sealed heat dissipation cavities. Several flow guiding grooves 701 are evenly opened on the side wall of the baffle frame 700. The flow guiding grooves 701 are inclined along the wall of the baffle frame 700 to regulate the flow direction of hot air in the cavity and guide the hot air to be discharged upward.

[0032] The above scheme is adopted: the entire enclosure frame 700 is made of high temperature resistant flame retardant insulating board. Multiple sets of independent sealed heat dissipation cavities enable each set of three-phase electromagnetic balance iron core 4 to maintain its own heat dissipation environment independently. The inclined flow guide trough 701 can break the state of hot air vortex accumulation in the cavity, and orderly rectify the turbulent airflow, so that the high temperature hot air after heat exchange can be transported upward along a fixed trajectory, improving the hot air exhaust efficiency and further enhancing the uniformity and stability of independent heat dissipation in a single cavity.

[0033] like Figures 2 to 6 As shown, the cylindrical cylinder 600 has symmetrical vertical grooves 8 on both sides. The two ends of the strip rod 603 are slidably limited inside the corresponding vertical grooves 8 and can slide vertically along the groove, which is used to guide the vertical movement of the hollow lifting plate 602 as a whole. The temperature-sensitive telescopic rod 604 is made of shape memory alloy and is integrally molded. The temperature-sensitive telescopic rod 604 undergoes axial expansion and contraction deformation as the temperature of the three-phase electromagnetic balance iron core assembly 4 rises. The perforated ventilation baffle 601 has multiple ventilation holes on its surface. The conical plug 607 has a truncated cone structure that is narrow at the top and wide at the bottom. Each conical plug 607 corresponds vertically to the ventilation hole of the perforated ventilation baffle 601. When the hollowed-out lifting plate 602 rises, the conical plug 607 is inserted into the ventilation hole to narrow the ventilation cross section. When the hollowed-out lifting plate 602 falls, it moves away from the ventilation hole to expand the ventilation hole. The support strip 606 is symmetrically arranged on both sides of the circular collar 605. One end of the support strip 606 is connected to the circular collar 605, and the other end is connected to the enclosure frame plate 700, forming a support base structure between the temperature-sensitive telescopic rod 604 and the circular collar 605.

[0034] The above-mentioned solution is adopted: The temperature-sensitive telescopic rod 604 is integrally molded with bidirectional memory alloy material, which has stable high-temperature elongation and low-temperature contraction reversible deformation characteristics. It does not require power supply or sensor triggering. It can achieve passive adaptive drive by relying entirely on the temperature of the three-phase electromagnetic balance iron core group 4. The structure has high reliability and no electrical fault risks. The conical block 607 has a conical surface structure that can realize progressive blocking and progressive conduction, which can smoothly adjust the size of the ventilation cross section and avoid heat dissipation fluctuations caused by sudden changes in ventilation volume, making heat dissipation regulation more stable.

[0035] Working principle and usage process of this invention:

[0036] The electrical control chamber 2 inside the cabinet 1 continuously supports the layout and operation of the control components of the whole machine. The electromagnetic control chamber 3 independently supports the operation of the core heat dissipation adjustment and electromagnetic balance control structure. The triangular bracket 5 provides positioning support for the three-phase electromagnetic balance core group 4 arranged in an equilateral triangle inside the electromagnetic control chamber 3. After the equipment is connected to the power grid and operated under load, the three-phase electromagnetic balance core group 4 continues to work and generates working temperature rise. At the same time, the baffle frame plate 700 in the wind deflector and flow separation component 7 separates the three groups of three-phase electromagnetic balance core groups 4 into independent sealed heat dissipation chambers, isolating the hot air generated by the operation of each phase core from mutual interference, thereby realizing the independent heat dissipation control of a single group of three-phase electromagnetic balance core groups 4. The flow guide groove 701 arranged at an incline on the side wall of the baffle frame plate 700 continuously regulates the airflow direction in the chamber, providing the basic conditions for the subsequent directional discharge of hot air.

[0037] As the operating temperature of the three-phase electromagnetic balance iron core assembly 4 gradually increases, the circular collar 605, fitted on the outer side of the three-phase electromagnetic balance iron core assembly 4, continuously adheres to the outer wall of the iron core to collect heat, which is then transferred to the vertically installed temperature-sensitive telescopic rod 604. The temperature-sensitive telescopic rod 604 is made of shape memory alloy and undergoes axial elongation deformation when heated. The deformation force is simultaneously transmitted downwards, thereby driving the strip rod 603, which is fixedly connected at the bottom, to slide smoothly downwards along the vertical sliding grooves 8 on both sides of the cylindrical cylinder 600. During the downward movement of the strip rod 603, it simultaneously drives the hollow lifting plate 602, which is fixed at the top, to slide smoothly downwards inside the cylindrical cylinder 600. The conical plugs 607, which are evenly distributed on the upper surface of the hollow lifting plate 602, simultaneously disengage from the ventilation holes on the surface of the perforated ventilation baffle 601. Gradually remove the blockage of the ventilation holes and continuously expand the effective ventilation cross-sectional area of ​​the open ventilation partition 601. The cylindrical tube 600 serves as an independent vertical ventilation cavity, continuously guiding the cooling airflow at the bottom. At the same time, the cooling ventilation main pipe 608 installed at the bottom of the cabinet 1 continuously introduces the cooling airflow. The airflow enters the electromagnetic control chamber 3 through the connecting channel. The expanded ventilation channel can significantly increase the amount of cold air introduced. The cold air directly contacts the high-temperature three-phase electromagnetic balance iron core group 4 to complete heat exchange and heat absorption. The hot air after heat exchange is guided upward by the enclosure frame plate 700 and the guide groove 701, and finally quickly discharged through the cooling ventilation pipe 609 arranged above the three-phase electromagnetic balance iron core group 4 and extending out of the cabinet 1, thereby completing the powerful heat dissipation operation under high temperature conditions.

[0038] When the grid load decreases and the operating temperature of the three-phase electromagnetic balance iron core assembly 4 gradually drops, the temperature-sensitive telescopic rod 604 loses the support of the high-temperature heat source and will undergo axial contraction and reset. The contraction force simultaneously pulls the strip rod 603 to slide upward along the vertical slide groove 8, thereby driving the hollow lifting plate 602 to move upward smoothly. During the upward movement of the hollow lifting plate 602, it will drive the conical plug 607 on the upper end face to gradually insert into the ventilation hole of the open ventilation partition 601, gradually narrowing the effective ventilation cross-sectional area of ​​the ventilation hole, reducing the amount of cold air flowing inside the electromagnetic control chamber 3, and avoiding excessive cold air entering the chamber under low-temperature conditions to cause condensation on the surface of the three-phase electromagnetic balance iron core assembly 4, thus ensuring the insulation safety of the equipment during low-temperature standby and light-load operation.

[0039] Throughout the entire operation of the equipment, the support strips 606 symmetrically arranged on both sides of the circular collar 605 are attached to and fixed at one end of the circular collar 605, and the other end is firmly connected to the enclosure frame plate 700. This continuously provides lateral limit and fixation for the entire temperature-sensitive telescopic transmission structure, preventing structural displacement and shaking caused by equipment vibration. This ensures the accuracy and stability of the overall adjustment action of the adaptive ventilation adjustment component 6. At the same time, each group of three-phase electromagnetic balance iron cores 4 is matched with an independent adaptive ventilation adjustment component 6, which can independently complete ventilation adjustment according to the different temperature rise states of each phase iron core, adapting to the complex operating conditions of unbalanced three-phase loads in the power grid.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage electromagnetic balance energy-saving protection device, comprising a cabinet (1), wherein an electrical control chamber (2) and an electromagnetic control chamber (3) are respectively provided on both sides of the inner end of the cabinet (1), and a set of three-phase electromagnetic balance iron core groups (4) arranged in an equilateral triangle are assembled inside the electromagnetic control chamber (3), and triangular brackets (5) are symmetrically installed at the upper and lower ends of the set of three-phase electromagnetic balance iron core groups (4), characterized in that: Also includes: An adaptive ventilation adjustment component (6) is used in conjunction with the three-phase electromagnetic balance iron core group (4) to adaptively adjust the ventilation and heat dissipation flux according to the temperature of the three-phase electromagnetic balance iron core group (4). The three-phase electromagnetic balance iron core group (4) is also equipped with a wind-blocking and flow-guiding separation component (7) on the outside to realize the independent air duct separation and hot air flow of a single core group. The adaptive ventilation adjustment component (6) includes a circular cylinder (600) independently arranged below each three-phase electromagnetic balance iron core group (4) to form a vertical independent ventilation cavity. An open-type ventilation baffle (601) is fixedly connected to the upper side of the inner end of the circular cylinder (600). A hollow lifting plate (602) is vertically slidably assembled in the inner cavity of the circular cylinder (600) and below the open-type ventilation baffle (601). A strip rod (60) is fixedly connected to the center of the bottom end of the hollow lifting plate (602). 3) The two ends of the strip rod (603) extend out of the outside of the circular cylinder (600), and the top of each end is vertically fixed with a temperature-sensitive telescopic rod (604). The top of the two temperature-sensitive telescopic rods (604) are jointly equipped with a circular collar (605) sleeved on the outside of the three-phase electromagnetic balance iron core assembly (4). The two ends of the circular collar (605) are symmetrically fixed with support strips (606). Several conical plugs (607) are evenly fixed on the upper surface of the hollow lifting plate (602).

2. The high-voltage electromagnetic balance energy-saving protection device according to claim 1, characterized in that: The bottom of the cabinet (1) is fixedly equipped with a refrigeration ventilation main pipe (608) that communicates with the interior of the electromagnetic control chamber (3). Inside the electromagnetic control chamber (3) and above the three-phase electromagnetic balance iron core group (4), a refrigeration ventilation pipe (609) extending out of the cabinet (1) is fixedly installed. A pump is connected to the outside of the refrigeration ventilation main pipe (608).

3. The high-voltage electromagnetic balance energy-saving protection device according to claim 2, characterized in that: The cooling ventilation main pipe (608) is connected to the cooling ventilation duct (609) and forms a bottom-up directional ventilation duct, which is used to cooperate with the adaptive ventilation adjustment component (6) to realize directional convection heat dissipation of the three-phase electromagnetic balance iron core assembly (4).

4. The high-voltage electromagnetic balance energy-saving protection device according to claim 1, characterized in that: The windbreak and flow guide separation component (7) includes a baffle frame (700) covering the outside of the three-phase electromagnetic balance iron core group (4), and the baffle frame (700) separates each group of three-phase electromagnetic balance iron core groups (4) to form an independent sealed heat dissipation cavity.

5. The high-voltage electromagnetic balance energy-saving protection device according to claim 4, characterized in that: The side wall of the enclosure frame (700) is evenly provided with a number of guide grooves (701). The guide grooves (701) are inclined along the wall of the enclosure frame (700) to regulate the flow of hot air in the cavity and guide the hot air to be discharged upward.

6. The high-voltage electromagnetic balance energy-saving protection device according to claim 1, characterized in that: The cylindrical tube (600) has vertical grooves (8) symmetrically opened on the left and right sides. The two ends of the strip rod (603) are slidably limited inside the corresponding vertical groove (8) and can slide vertically along the groove, so as to guide the overall vertical movement of the hollow lifting plate (602).

7. The high-voltage electromagnetic balance energy-saving protection device according to claim 1, characterized in that: The temperature-sensitive telescopic rod (604) is integrally molded from shape memory alloy material, and the temperature-sensitive telescopic rod (604) undergoes axial telescopic deformation as the temperature rises with the three-phase electromagnetic balance iron core assembly (4).

8. The high-voltage electromagnetic balance energy-saving protection device according to claim 1, characterized in that: The perforated ventilation baffle (601) has multiple ventilation holes on its surface. The conical plug (607) has a truncated cone structure that is narrow at the top and wide at the bottom, and each conical plug (607) corresponds vertically to the ventilation hole of the perforated ventilation baffle (601).

9. The high-voltage electromagnetic balance energy-saving protection device according to claim 8, characterized in that: When the hollow lifting plate (602) rises, the conical plug (607) is inserted into the ventilation hole to narrow the ventilation section. When the hollow lifting plate (602) falls, it moves away from the ventilation hole to expand the ventilation hole.

10. The high-voltage electromagnetic balance energy-saving protection device according to claim 1, characterized in that: The support strip (606) is symmetrically arranged on both sides of the circular collar (605). One end of the support strip (606) is connected to the circular collar (605), and the other end is connected to the enclosure frame plate (700), forming a support base structure between the temperature-sensitive telescopic rod (604) and the circular collar (605).

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