10kV three-element anti-resonance combined transformer for metering

Abstract

The invention relates to the technical field of inductor manufacturing, in particular to a 10kV three-element anti-resonance metering combined mutual inductor which comprises a mutual inductor body, a heat dissipation groove is formed in the bottom of the mutual inductor body, and an isolation box is arranged in the mutual inductor body. The side wall and the top of the isolation box are slidably connected with a first pressed plate and a second pressed plate correspondingly. An isolation plate I, an isolation plate II, a blocking plate I and a blocking plate II are arranged in the box from top to bottom; the limitation of a fixed heat dissipation mode in traditional inductor manufacturing is broken through, and a stress-heat dissipation self-adaptive adjusting mechanism is constructed; stress generated by materials such as epoxy resin, copper materials and silicon steel sheets due to difference of thermal expansion coefficients is sensed through a pressed plate, and different numbers of air inlets and vent holes are opened in an automatic linkage mode; intelligent switching from basic heat dissipation to enhanced fire dissipation is achieved, thermal mechanical stress is absorbed in all directions through a spring buffer system, the long-term reliability problem of internal cracks and insulation deterioration caused by material thermal mismatch in inductor manufacturing is solved, the service life of a product is prolonged, and the operation stability of the product is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of inductor manufacturing, in particular to a 10kV three-element combined mutual inductor for anti-resonance measurement. Background Art

[0002] The 10kV three-element anti-resonance metering combination transformer is a key integrated measurement device in power systems. It integrates the functions of a three-phase voltage transformer and a three-phase current transformer into a unified, sealed unit, typically molded using epoxy resin casting. This equipment primarily undertakes core tasks such as energy metering, load monitoring, and relay protection. Its operational reliability and metering accuracy are directly related to the economic settlement, safety, and stability of the power grid. The manufacture of 10kV three-element anti-resonance metering combination transformers belongs to the high-end segment of inductor manufacturing. Its core manufacturing process is epoxy resin casting integrated molding. The copper windings, silicon steel sheet core, and other core components of the three-phase voltage / current transformer are encapsulated into a sealed unit through epoxy resin casting to meet the distribution network's manufacturing requirements for miniaturization and insulation.

[0003] During inductor manufacturing, to balance insulation performance and electromagnetic properties, three core materials must be selected: epoxy resin (primary insulation), copper (conductor), and silicon steel sheet (iron core). However, the thermal expansion coefficients of these three materials vary significantly (epoxy resin is approximately 60-80 ppm / °C, copper is approximately 17 ppm / °C, and silicon steel sheet is approximately 11 ppm / °C). During the long-term operation of the transformer after manufacturing, temperature cycling caused by load fluctuations can generate periodic thermal stress at the material interfaces formed during manufacturing. Traditional inductor manufacturing processes lack targeted heat dissipation and stress buffering designs, relying solely on the epoxy resin itself for heat dissipation. This leads to accumulated thermal stress, which can cause interfacial cracks and ultimately destroy the insulation integrity during manufacturing. In the current inductor manufacturing field, the cooling solution for this type of combined transformer is mostly a fixed heat sink design. However, during manufacturing, the heat dissipation efficiency cannot be dynamically adjusted according to the temperature distribution during actual operation. Under low-temperature conditions, "overheating" causes condensation within the sealed structure of the manufacturing package, while underheating under high-temperature conditions exacerbates material stress. In addition, the manufacturing process does not integrate filter cleaning and contaminant barrier structures, resulting in dust clogging the heat dissipation channel and reducing the service life of the manufactured product. Summary of the Invention

[0004] The object of the present invention is to provide a 10kV three-element anti-resonance metering combined transformer to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: comprising a transformer body, a heat dissipation groove is provided at the bottom of the transformer body, an isolation box connected to the heat dissipation groove is provided in the transformer body; a pressure plate 1 is slidably connected to the side of the isolation box, and a pressure plate 2 is slidably connected to the top of the isolation box; isolation plate 1, isolation plate 2, blocking plate 1, and blocking plate 2 are provided in the isolation box from top to bottom, an air inlet 1, an air inlet 2, and an exhaust port are provided on the isolation plate 1, and an air vent 1 and an air vent 2 are provided on the isolation plate 2; a baffle 2 for controlling the opening and closing of the air vent 2 is provided in the air vent 2, and a baffle 3 is provided on the air inlet 2.

[0006] Furthermore, the isolation plate 1 is located between the pressure plate 1 and the pressure plate 2, and the isolation plate 2, the blocking plate 1, and the blocking plate 2 are all located below the pressure plate 1.

[0007] Furthermore, a mounting seat is provided on the transformer body, a spring 1 is provided between the second pressure plate and the first isolation plate, and a plug rod is fixedly connected to the bottom surface of the second pressure plate.

[0008] Furthermore, a piston cylinder 1 that cooperates with the insertion rod is provided below the isolation plate 1, and a piston cylinder 2 is provided below the isolation plate 1. The piston cylinder 1 and the piston cylinder 2 are connected through an air pipe, and the air inlet 1, the air inlet 2 and the exhaust port are all provided with filters.

[0009] Furthermore, a limiting guide groove is provided below the isolation plate 1, a fixed frame is slidably connected in the limiting guide groove, the baffle 3 is fixedly connected to the fixed frame, and the fixed frame is provided with a cleaning strip 1 and a cleaning strip 2.

[0010] Furthermore, a spring four is provided between the baffle three and the inner wall of the isolation box, a piston block is slidably connected to the piston cylinder two, and the cleaning strip two is fixedly connected to the piston block. In the initial state, the baffle three cover is provided on the air inlet two, and the cleaning strip one is located between the air inlet one and the air inlet two.

[0011] Furthermore, a fixing plate is provided in the isolation box, and a second spring is provided between the fixing plate and the first pressure plate.

[0012] Furthermore, there are two pressure plates, each of which is provided with a push rod. A limiting tube is provided in the isolation box, and the end of the push rod is inserted into the limiting tube.

[0013] Furthermore, the middle part of the limiting tube is connected to a plug-in tube, and a baffle 1 is slidably connected inside the plug-in tube. The baffle 1 and the baffle 2 are fixedly connected by a sliding rod. A fixed seat is provided on the isolation plate 2, and the sliding rod passes through the fixed seat. A spring 3 is provided between the fixed seat and the baffle 1.

[0014] Furthermore, the blocking plate 1 is provided with a first inclined slot, and the blocking plate 2 is provided with a second inclined slot.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention overcomes the limitations of the traditional fixed heat dissipation mode of transformers by establishing an adaptive "stress-heat dissipation" adjustment mechanism based on the thermal expansion stress of the material. When temperature rises in different locations (the upper part or both sides) and causes material expansion, the device accurately senses the temperature change trend through the displacement of the pressure plate and automatically adjusts the number of air inlet channels (inlet 1 open / inlet 1 and inlet 2 open, vent 1 open / vent 1 and vent 2 open), achieving intelligent switching between "local low heat - basic heat dissipation" and "local high heat - enhanced heat dissipation", avoiding energy waste caused by "overheating" and temperature accumulation caused by "underheating".

[0016] 2. This invention utilizes a "spring-pressure plate" combination structure to construct a multi-dimensional stress buffering system: Pressure plate 2, in conjunction with spring 1, buffers the axial stress generated by the expansion of the upper material; pressure plate 1, in conjunction with spring 2, buffers the radial stress generated by the expansion of the lateral material; springs 3 and 4, respectively, provide restoring force for baffle 1 and the fixed frame, while further absorbing impact stress during movement. This system can fully absorb the cyclical mechanical stress generated by material thermal cycling, preventing stress concentration that can cause cracks at the interface between the epoxy resin casting and the metal material, thus resolving the insulation failure problem of traditional transformers caused by material thermal expansion differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 is a cross-sectional view of the transformer body of the present invention; Figure 4 It is a structural schematic diagram of the isolation box of the present invention; Figure 5 A cross-sectional view of the isolation box of the present invention Figure 1 ; Figure 6 For the present invention Figure 5 A schematic diagram of the structure of the enlarged part A; Figure 7 A cross-sectional view of the isolation box of the present invention Figure 2 ; Figure 8 For the present invention Figure 7 A schematic diagram of the structure of the enlarged portion B; Figure 9A cross-sectional view of the isolation box of the present invention Figure 3 ; Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure of part C.

[0018] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Transformer body; 2. Mounting base; 3. Heat sink; 4. Isolation box; 5. Pressure plate 1; 501. Push rod; 6. Pressure plate 2; 7. Limiting tube; 701. Insertion tube; 8. Isolation plate 1; 801. Air inlet 1; 802. Air inlet 2; 803. Exhaust port; 9. Insertion rod; 10. Spring 1; 11. Fixing plate; 12. Spring 2; 13. Baffle 1; 14. Sliding rod; 15. Vent one; 16. Spring three; 17. Fixed seat; 18. Baffle two; 19. Vent two; 20. Isolation plate two; 21. Blocking plate one; 2101. Chute one; 22. Blocking plate two; 2201. Chute two; 23. Filter; 24. Piston cylinder one; 25. Air pipe; 26. Piston cylinder two; 27. Piston block; 28. Baffle three; 29. ​​Cleaning strip one; 30. Cleaning strip two; 31. Spring four; 32. Limiting guide groove; 33. Fixed frame. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The present invention provides a technical solution: Figures 1-10 A 10kV three-element anti-resonance metering combination transformer is shown, comprising a transformer body 1, a heat dissipation groove 3 being provided at the bottom of the transformer body 1, and an isolation box 4 connected to the heat dissipation groove 3 being provided inside the transformer body 1; a pressure plate 5 being slidably connected to the side of the isolation box 4, and a pressure plate 2 6 being slidably connected to the top of the isolation box 4; an isolation plate 1 8, an isolation plate 2 20, a blocking plate 1 21, and a blocking plate 2 22 being provided in sequence from top to bottom in the isolation box 4, an air inlet 1 801, an air inlet 2 802, and an exhaust port 803 being provided on the isolation plate 1 8, and an air vent 15 and an air vent 2 19 being provided on the isolation plate 20; a baffle 2 18 for controlling the opening and closing of the air vent 2 19 being provided in the air vent 2, and a baffle 3 28 being provided on the air inlet 2 802.

[0021] The isolation plate 8 is located between the pressure plate 15 and the pressure plate 26. The isolation plate 20, the blocking plate 121 and the blocking plate 22 are all located below the pressure plate 15. The transformer body 1 is provided with a mounting seat 2. A spring 10 is provided between the pressure plate 26 and the isolation plate 8. The bottom surface of the pressure plate 26 is fixedly connected with a plug rod 9. A piston cylinder 24 is provided below the isolation plate 8 to match the plug rod 9. A piston cylinder 26 is provided below the isolation plate 8. The piston cylinder 24 and the movable The second plug cylinder 26 is connected through the air pipe 25. The air inlet 801, the second air inlet 802 and the exhaust port 803 are all provided with a filter 23. A limit guide groove 32 is provided below the isolation plate 8. A fixed frame 33 is slidably connected in the limit guide groove 32. The baffle 3 28 is fixedly connected to the fixed frame 33. The fixed frame 33 is provided with a cleaning strip 29 and a cleaning strip 2 30. A spring 4 31 is provided between the baffle 3 28 and the inner wall of the isolation box 4. A movable spring 31 is slidably connected in the piston cylinder 26. The block 27 and the cleaning strip 2 30 are fixedly connected to the piston block 27. In the initial state, the baffle 3 28 is covered on the air inlet 2 802, and the cleaning strip 1 29 is located between the air inlet 1 801 and the air inlet 2 802. A fixed plate 11 is provided in the isolation box 4, and a spring 2 12 is provided between the fixed plate 11 and the pressure plate 1 5; there are two pressure plates 1 5, each of which is provided with a push rod 501. A limit tube 7 is provided in the isolation box 4, and the end of the push rod 501 Inserted in the limiting tube 7, the middle part of the limiting tube 7 is connected with a plug-in tube 701, and a baffle 13 is slidably connected in the plug-in tube 701. The baffle 13 and the baffle 2 18 are fixedly connected by a sliding rod 14. A fixing seat 17 is provided on the isolation plate 20, and the sliding rod 14 passes through the fixing seat 17. A spring 3 16 is provided between the fixing seat 17 and the baffle 1 13. An inclined groove 1 2101 is provided on the blocking plate 1 21, and an inclined groove 2 2201 is provided on the blocking plate 2 22.

[0022] In the present invention, the isolation box 4 serves as a core functional component, and is longitudinally divided by the isolation plate 1 8 and the isolation plate 2 20 to form three independent and functionally coordinated spatial structures, which are the upper space, the middle space and the lower space from top to bottom. Among them, the upper space is provided with an insert rod 9, a pressure plate 26 and a spring 10. The pressure plate 26 is elastically connected to the top surface of the isolation plate 8 through the spring 10. The insert rod 9 is vertically fixed to the bottom surface of the pressure plate 26 and is coaxially matched with the piston cylinder 1 24 below the isolation plate 8; the middle space is the core action execution area, which integrates the key components such as the piston cylinder 1 24, the piston cylinder 26, the air pipe 25, the limit pipe 7, the insert pipe 701, the baffle 1 13, the sliding rod 14, the fixing seat 17, the spring 3 16, the baffle 2 18, the limit guide groove 32, the fixing frame 33, the baffle 3 28, the cleaning strip 1 29, the cleaning strip 2 30 and the spring 4 31. The piston cylinder 1 24 and the piston cylinder 2 26 are connected in air through the air pipe 25. The fixing frame 33 can be slidably embedded in the limit guide groove 32. Three 28, cleaning strip one 29 and cleaning strip two 30 are all fixed on the fixed frame 33, the end of cleaning strip two 30 is rigidly connected to the piston block 27 in the piston cylinder two 26, the limiting tube 7 is horizontally fixed in the middle space, and its two ends are respectively plugged into the push rods 501 of the two pressure plates one 5, and the middle part is connected to the baffle one 13 through the plug-in tube 701. The baffle one 13 is fixed as a whole with the baffle two 18 in the vent hole two 19 through the sliding rod 14. The sliding rod 14 passes through the fixed seat 17, and the fixed seat 17 and the baffle one 13 are elastically reset by the spring three 16; only the blocking plate one 21 and the blocking plate two 22 are set in the lower space, and the two are arranged in parallel and spaced apart. The inclined groove one 2101 on the blocking plate one 21 and the inclined groove two 2201 on the blocking plate two 22 are opened in opposite directions to form a reverse blocking structure.

[0023] The isolation box 4 is made of the same epoxy resin material as the transformer body 1. The limiting guide groove 32, piston cylinder and other structures on its inner wall are integrated into the mold, which is compatible with the casting process of inductor manufacturing, avoiding sealing failure caused by secondary assembly; the pressure plate 1 5 and the pressure plate 2 6 are made of copper alloy, and its thermal conductivity matches the copper material of the transformer winding. It can not only accurately sense the thermal expansion and deformation of the manufacturing material, but also assist in conducting heat to the heat dissipation channel.

[0024] In the initial state, spring 10 is naturally extended, pressure plate 2 6 protrudes from the top of the isolation box 4, and the insertion rod 9 is not inserted into piston cylinder 1 24. Spring 4 31 is naturally extended, and the fixing frame 33 drives baffle 3 28 to cover air inlet 2 802, leaving only air inlet 1 801 open. Cleaning strip 1 29 is located between air inlet 1 801 and air inlet 2 802, and cleaning strip 2 30 is in its initial position. Spring 2 12 is naturally extended, with pressure plates 1 5 protruding from either side of the isolation box 4, and push rod 501 only partially inserted into the stop tube 7. Spring 3 16 is naturally extended, baffle 1 13 is in its initial position within the insertion tube 701, and baffle 2 18 covers vent 2 19, leaving only vent 15 open. The filters 23 within air inlet 1 801, air inlet 2 802, and exhaust port 803 are all clean, ensuring smooth airflow.

[0025] Furthermore, when the upper epoxy resin packaged during inductor manufacturing expands due to heat, the copper alloy material of the pressure plate 2 6 can quickly transmit the expansion stress, pushing the rod 9 into the piston cylinder 1 24 - the structure in which the piston cylinder 1 24 and the piston cylinder 2 26 are connected through the air pipe 25 is brazed and sealed during manufacturing to ensure that there is no leakage in the air path and the response accuracy of the heat dissipation adjustment; at the same time, the cleaning strip on the fixed frame 33 is made of wear-resistant nylon, which matches the stainless steel material of the filter screen in the inductor manufacturing. It can not only clean the filter screen 23 but also avoid scratches, thereby extending the service life of the manufactured components.

[0026] refer to Figures 1-10 Working principle of the present invention: Based on the stress signal generated by the difference in thermal expansion coefficients of materials such as epoxy resin, copper, and silicon steel sheets inside the mutual inductor, the present invention triggers the linkage mechanism through the displacement of pressure plate 2 6 and pressure plate 1 5 to achieve the integrated collaborative work of "stress sensing - heat dissipation regulation - filter 23 cleaning - pollution blocking", which is specifically divided into the following three working conditions: 1. Thermal expansion of upper material (corresponding to temperature increase in upper space) When the epoxy resin and other materials in the upper part of the transformer body 1 expand due to the increase in temperature, the pressure generated by the expansion will act on the top surface of the pressure plate 2 6. Under the action of pressure, the pressure plate 2 6 overcomes the elastic force of the spring 10 and contracts into the upper space of the isolation box 4, while driving the plug rod 9 fixed on the bottom surface to move downward synchronously. As the plug rod 9 is gradually inserted into the piston cylinder 1 24, it will exert an extrusion effect on the gas in the piston cylinder 1 24, causing the gas pressure in the piston cylinder 1 24 to increase. Driven by the pressure difference, the gas in the piston cylinder 1 24 is pressed into the piston cylinder 2 26 through the air pipe 25, causing the volume of the gas in the piston cylinder 2 26 to increase, thereby pushing the piston block 27 to move along the axis of the piston cylinder 2 26 toward the side away from the air pipe 25.

[0027] The movement of piston block 27 drives the synchronous movement of cleaning strip 2 30, which is fixed to it. Cleaning strip 2 30 is fixed to fixed frame 33. Therefore, fixed frame 33 slides along limiting guide groove 32 under the pull of cleaning strip 2 30, and simultaneously overcomes the elastic force of spring 4 31, which compresses spring 4 31. As fixed frame 33 slides, it also drives cleaning strip 1 29 and baffle 3 28 thereon to move: cleaning strip 1 29 slides across filter 23 at air inlet 1 801, and cleaning strip 2 30 slides across filter 23 at air inlet 2 802. Through physical friction, they remove dust, impurities, and other contaminants attached to the surface of filter 23, preventing filter 23 from clogging and reducing ventilation efficiency. Baffle 3 28 gradually moves away from its covering position of air inlet 2 802, causing air inlet 2 802 to switch from a closed state to an open state.

[0028] At this point, both air inlet 1 801 and air inlet 2 802 are open, allowing cold air from the outside to enter the upper space of the isolation box 4 through both inlets and mix thoroughly with the hot air within. The mixed hot air, under the influence of the airflow pressure differential, is discharged from the isolation box 4 through exhaust port 803 and ultimately dissipated into the outside environment through the heat sink 3 at the bottom of the transformer body 1. The increased number of air inlets significantly increases the air intake volume and accelerates the airflow circulation rate, thereby rapidly cooling the upper space and surrounding high-temperature areas, alleviating thermal expansion stress caused by excessive temperature in the upper material and reducing the initiation of microcracks. When the temperature of the upper material drops and the expansion pressure decreases, the elastic force of spring 10 will push the pressure plate 2 6 to reset, the insertion rod 9 will withdraw from the piston cylinder 1 24, the air pressure in the piston cylinder 1 24 and the piston cylinder 2 26 will be restored to balance, the elastic force of spring 4 31 will push the fixed frame 33 to reset, the baffle 3 28 will cover the air inlet 2 802 again, the cleaning strip 1 29 and the cleaning strip 2 30 will return to their initial positions, and the device will resume its initial working state.

[0029] 2. Thermal expansion of the material on one side (corresponding to the local temperature increase in the middle space) When the material on one side of the transformer body 1 expands due to a local temperature rise, the expansion pressure acts on the side of the pressure plate 1 5 on that side. Under the pressure, the pressure plate 1 5 overcomes the elastic force of the spring 2 12 and contracts into the central space of the isolation box 4, simultaneously driving the push rod 501, fixed at its end, to be inserted into the limiting tube 7 along the axis of the limiting tube 7. During the insertion of the push rod 501, the gas within the limiting tube 7 is squeezed. However, because the pressure plate 1 5 on the other side is not subjected to the expansion pressure, its corresponding push rod 501 remains in its initial position and does not move. As a result, the squeezed gas within the limiting tube 7 can only flow locally within the limiting tube 7, unable to generate sufficient pressure to push the baffle 13.

[0030] Therefore, baffle 13 remains in its initial position and does not move. Baffle 2 18, which is connected to baffle 13 via the sliding rod 14, also always covers vent 2 19, and vent 2 19 remains closed. At this time, the central space of the isolation box 4 only achieves gas exchange through vent 15 on isolation plate 2 20: external cold air enters the central space through vent 15, absorbs the heat in the central space and forms hot air, which is then discharged through vent 15, forming a one-way airflow circulation to provide basic heat dissipation for the central space. Under this working condition, the device automatically selects a low-power basic heat dissipation mode based on the degree of local temperature rise to avoid energy waste. At the same time, through the buffering effect of spring 2 12, it absorbs the local stress generated by unilateral expansion and prevents damage to components caused by stress concentration. When the unilateral expansion pressure disappears, spring 2 12 pushes the pressure plate 1 5 and the push rod 501 to reset, and the device returns to its initial state.

[0031] 3. Thermal expansion of the side materials on both sides (corresponding to the overall temperature increase of the middle space) When the material on both sides of the transformer body 1 expands simultaneously due to the overall temperature increase, the resulting expansion pressure acts on the sides of the two pressure plates 1 (5). Under the pressure, both pressure plates 1 (5) overcome the elastic force of spring 2 (12) and contract into the central space of the isolation box 4, simultaneously driving their respective push rods 501 into the interior of the stop tube 7. The two push rods 501 simultaneously squeeze the gas within the stop tube 7, causing the gas pressure within the stop tube 7 to rise sharply. Under the high pressure, the gas within the stop tube 7 flows into the central insertion tube 701, creating a thrust force against the baffle 1 (13).

[0032] When the thrust overcomes the elastic force of spring three 16, baffle one 13 will slide along the axial direction of the plug-in tube 701 (the plug-in tube 701 is perpendicular to the limit tube 7) toward the side away from the limit tube 7, while driving the sliding rod 14 fixed thereto to move synchronously. During the movement, the sliding rod 14 will penetrate the fixing seat 17 and push the baffle two 18 connected at the end to withdraw from the vent two 19, so that the vent two 19 switches from a closed state to an open state. At this time, the vent one 15 and the vent two 19 on the isolation plate two 20 are both in an open state, and the outside cold air enters the middle space through the two vents at the same time, and fully convects and exchanges with the hot air in the middle space. The hot air is quickly discharged through the two vents, which greatly improves the gas exchange rate and heat dissipation efficiency of the middle space, achieves rapid cooling of the entire high-temperature area of ​​the middle space, and effectively alleviates the overall stress caused by the thermal expansion of the materials on both sides.

[0033] When the temperature of the materials on both sides drops and the expansion pressure decreases, the elastic force of spring 2 12 will push the two pressure plates 1 5 and the push rod 501 to reset, the air pressure in the limit tube 7 decreases, and the elastic force of spring 3 16 pushes baffle 1 13, the sliding rod 14 and baffle 2 18 to reset. Baffle 2 18 covers vent 2 19 again, and the device returns to its initial working state.

[0034] 4. Pollutant Isolation Mechanism (Throughout All Operating Conditions) In all of the above-mentioned operating conditions, baffle plate 1 21 and baffle plate 2 22 in the lower space of isolation box 4 consistently function as a contaminant barrier. Because the chute 1 2101 on baffle plate 1 21 and the chute 2 2201 on baffle plate 2 22 are oriented in opposite directions, when dust, water vapor, impurities, and other pollutants from the external environment, driven by airflow or gravity, invade the interior of isolation box 4, they are first blocked by chute 2 2201 on baffle plate 2 22. Unblocked pollutants continue to move upward but are reversely intercepted by chute 1 2101 on baffle plate 1 21, creating a "double reverse barrier" effect. Simultaneously, isolation plate 1 8 and isolation plate 2 20, acting as a transverse partitioning structure, further prevent contaminants from diffusing into the upper and middle spaces, preventing them from adhering to the surfaces of moving components such as springs, pistons, and baffles, causing jamming and wear, or from adhering to the surface of filter screen 23, affecting ventilation, thereby ensuring the long-term stable operation of the device's internal components.

[0035] Specific embodiments of the present invention address the inherent shortcomings of inductor manufacturing by providing an intelligent management system built into the transformer. This system goes beyond simply increasing the heat dissipation area. Instead, it creatively transforms the destructive factor of "thermal stress" into a "driving signal." Through ingenious mechanical design, it achieves adaptive adjustment of heat dissipation intensity and self-cleaning of the internal filter. This represents a technological leap from passive protection to active management in inductor manufacturing.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A 10kV three-element anti-resonance metering combined transformer, comprising a transformer body (1), characterized in that: A heat dissipation groove (3) is provided at the bottom of the transformer body (1), and an isolation box (4) connected to the heat dissipation groove (3) is provided inside the transformer body (1); The side of the isolation box (4) is slidably connected to a first pressure plate (5), and the top of the isolation box (4) is slidably connected to a second pressure plate (6); The isolation box (4) is provided with an isolation plate 1 (8), an isolation plate 2 (20), a blocking plate 1 (21), and a blocking plate 2 (22) in order from top to bottom. The isolation plate 1 (8) is provided with an air inlet 1 (801), an air inlet 2 (802), and an exhaust port (803). The isolation plate 2 (20) is provided with an air vent 1 (15) and an air vent 2 (19). The second vent hole (19) is provided with a baffle plate (18) for controlling its opening and closing, and the second air inlet (802) is provided with a baffle plate (28).

2. A 10kV three-element anti-resonance metering combined transformer according to claim 1, characterized in that: The isolation plate 1 (8) is located between the pressure plate 1 (5) and the pressure plate 2 (6), and the isolation plate 2 (20), the blocking plate 1 (21), and the blocking plate 2 (22) are all located below the pressure plate 1 (5).

3. The 10kV three-element anti-resonance metering combined transformer according to claim 1, characterized in that: A mounting seat (2) is provided on the transformer body (1), a spring (10) is provided between the second pressure plate (6) and the first isolation plate (8), and an insertion rod (9) is fixedly connected to the bottom surface of the second pressure plate (6).

4. A 10kV three-element anti-resonance metering combined transformer according to claim 3, characterized in that: A piston cylinder 1 (24) is provided below the isolation plate 1 (8) and is matched with the insertion rod (9). A piston cylinder 2 (26) is provided below the isolation plate 1 (8). The piston cylinder 1 (24) and the piston cylinder 2 (26) are connected through an air pipe (25). Filters (23) are provided in the air inlet 1 (801), the air inlet 2 (802), and the air outlet (803).

5. A 10kV three-element anti-resonance metering combined transformer according to claim 4, characterized in that: A limiting guide groove (32) is provided below the isolation plate 1 (8), a fixed frame (33) is slidably connected in the limiting guide groove (32), the baffle 3 (28) is fixedly connected to the fixed frame (33), and the fixed frame (33) is provided with a cleaning strip 1 (29) and a cleaning strip 2 (30).

6. A 10kV three-element anti-resonance metering combined transformer according to claim 5, characterized in that: A spring four (31) is provided between the baffle three (28) and the inner wall of the isolation box (4), a piston block (27) is slidably connected to the piston cylinder two (26), and the cleaning strip two (30) is fixedly connected to the piston block (27). In the initial state, the baffle three (28) is covered on the air inlet two (802), and the cleaning strip one (29) is located between the air inlet one (801) and the air inlet two (802).

7. The 10kV three-element anti-resonance metering combined transformer according to claim 1, characterized in that: A fixed plate (11) is provided in the isolation box (4), and a second spring (12) is provided between the fixed plate (11) and the first pressure plate (5).

8. The 10kV three-element anti-resonance metering combined transformer according to claim 1, characterized in that: There are two pressure plates (5), each of which is provided with a push rod (501). A limiting tube (7) is provided in the isolation box (4), and the end of the push rod (501) is inserted into the limiting tube (7).

9. The 10kV three-element anti-resonance metering combined transformer according to claim 8, characterized in that: The middle part of the limit tube (7) is connected to a plug-in tube (701), and a baffle 1 (13) is slidably connected in the plug-in tube (701). The baffle 1 (13) and the baffle 2 (18) are fixedly connected via a sliding rod (14). A fixing seat (17) is provided on the isolation plate 2 (20), and the sliding rod (14) passes through the fixing seat (17). A spring 3 (16) is provided between the fixing seat (17) and the baffle 1 (13).

10. The 10kV three-element anti-resonance metering combined transformer according to claim 1, characterized in that: The blocking plate 1 (21) is provided with an inclined groove 1 (2101), and the blocking plate 2 (22) is provided with an inclined groove 2 (2201).

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