Metal-free safety capacitor with high voltage and current resistance

Abstract

The application relates to the technical field of capacitors, and particularly discloses a metal-shell-free safety film capacitor with high voltage resistance and large current resistance, which comprises a bottom plate, a capacitor body movably mounted on the top of the bottom plate, a blocking cover movably mounted on the top of the bottom plate outside the capacitor body, a detection mechanism and a cooling mechanism arranged in the blocking cover, and blocking plates movably arranged on the two sides of the blocking cover on the top of the bottom plate, wherein the blocking plates are provided with buffer mechanisms. The blocking cover and the blocking plates are arranged, the first damping rod can dampen the vibration of the bottom of the capacitor body, the two sides of the capacitor body are abutted through the abutting rollers, the capacitor body can be laterally damped, the impact resistance of the capacitor body during use is improved through the two modes, the displacement of the capacitor body during the vibration caused by the impact is effectively avoided, the insulation damage caused by the collision is avoided, and the voltage resistance stability of the capacitor body is improved.

Description

Technical Field

[0001] This invention relates to the field of capacitor technology, and more particularly to a metal-free safety film capacitor with high voltage and high current withstand capability. Background Technology

[0002] Film capacitors are passive energy storage electronic components made of plastic film as dielectric material and combined with metal-plated electrodes wound or stacked. They have outstanding advantages such as high insulation strength, excellent self-healing performance, low dielectric loss, good frequency characteristics, and strong shock resistance. They are widely used in new energy power, industrial frequency conversion, high voltage power distribution, rail transportation, and high-power electrical equipment.

[0003] When film capacitors operate under high voltage and high current for extended periods, they continuously generate dielectric loss heat during high-current operation. If this heat cannot be dissipated in time, it will lead to accelerated aging of the dielectric material, capacitance decay, and even thermal runaway. Vibrations during equipment operation can easily cause displacement of the capacitor body, wear of the insulation layer, and loosening of wiring. All of these situations will affect the normal use of film capacitors. Therefore, film capacitors must have efficient heat dissipation, reliable buffering and limiting, and vibration resistance when used under high current and high voltage conditions. However, existing film capacitors are installed directly, which results in insufficient cooling and vibration reduction effects during use, and cannot guarantee the stability of the capacitor under high voltage and high current conditions. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a metal-free safety film capacitor with high voltage and high current withstand capability.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A metal-free safety film capacitor with high voltage and high current resistance includes a base plate. A capacitor body is movably mounted on the top of the base plate. A shield is mounted on the outside of the capacitor body on the top of the base plate. A detection mechanism and a cooling mechanism are provided inside the shield. A baffle plate is movably mounted on both sides of the shield on the top of the base plate. A buffer mechanism is provided on the baffle plate.

[0006] Preferably, a plurality of first damping rods are evenly installed on the bottom of the capacitor body, with the mounting ends of the first damping rods facing downwards and connected to the top of the base plate.

[0007] Preferably, the detection mechanism includes a movable plate, a connector, and clamping rods. The movable plate is movably installed on the top of the inner wall of the barrier, and the connector is movably connected to the bottom of the movable plate. The bottom of the connector is designed with a groove. Rotating rods are rotatably installed on the inner walls of both ends of the groove at the bottom of the connector by means of embedded electric rotating shafts. Two clamping rods are movably installed at the bottom of the rotating rods. Laser ranging sensors are embedded on the sides of the two clamping rods that face each other. A cleaning brush can be installed at the bottom of the clamping rods.

[0008] Preferably, the top of the inner wall of the barrier is provided with a movable groove, and the top of the movable plate is connected to a movable electric slider, which is slidably installed inside the movable groove.

[0009] Preferably, the bottom of the movable plate is provided with a displacement groove, and a rotary motor is embedded in the top of the connector. The mounting end of the rotary motor faces upward, and the mounting end of the rotary motor is connected to an electric lifting rod. The mounting end of the electric lifting rod faces upward, and the mounting end of the electric lifting rod is connected to a displacement electric slider. The displacement electric slider is slidably installed inside the displacement groove.

[0010] Preferably, the bottom of the rotating rod is provided with a first sliding groove, and the top of the clamping rod is connected to a first electric slider, which is slidably installed inside the first sliding groove.

[0011] Preferably, the cooling mechanism includes an air inlet and an air outlet. Cavities are provided inside both end walls of the baffle. An air inlet is provided on the outer end wall of the baffle, and multiple air outlets are evenly provided on the inner end wall of the baffle. The air inlet and the air outlet are connected to the cavities on the end walls of the baffle. An electric telescopic rod is installed on the top inner wall of the cavity on the end wall of the baffle. The telescopic end of the electric telescopic rod faces downward, and a baffle plate is connected to the telescopic end of the electric telescopic rod.

[0012] Preferably, the top of the base plate has a second slot on both sides of the blocking cover. A threaded rod is rotatably installed inside the second slot. A first rotating motor is installed on both end walls of the base plate. The output end of the first rotating motor movably passes through the end wall of the base plate and is connected to the threaded rod. A sliding block is slidably installed inside the second slot. The threaded rod passes through the sliding block. The top of the sliding block is connected to the bottom of the blocking plate.

[0013] Preferably, the buffer mechanism includes a rotating plate, an extension plate, and a buffer plate. A first slot is formed through the side wall of the blocking plate. Multiple rotating plates are uniformly rotatably installed on the inner wall of the first slot. An extension slot is formed on the side of the rotating plate facing the blocking cover. An extension plate is movably installed inside the extension slot. A third slot is formed on the side of the extension plate away from the rotating plate. A buffer plate is slidably installed inside the third slot. An abutment roller is embedded and rotatably installed on the side of the buffer plate away from the rotating plate. A cavity is formed inside the rotating plate. Coolant is injected into the cavity.

[0014] Preferably, a second rotating motor is embedded in one side wall of the rotating plate, and the mounting end of the second rotating motor is connected to the inner wall of the first slot. The other side wall of the rotating plate is rotatably connected to the inner wall of the first slot. Two electric extension rods are embedded in the bottom of the inner wall of the extension slot, with the extension ends of the electric extension rods facing the extension plate and connected to the extension plate. Stable sliding grooves are provided on the inner walls of both ends of the third slot. Stable sliders are slidably installed inside the stable sliding grooves. The side of the stable slider facing the buffer plate is connected to the buffer plate. Multiple second damping rods are connected between the buffer plate and the bottom of the inner wall of the third slot. A pressure sensor is installed at the bottom of the inner wall of the third slot. A spring telescopic rod is connected between the buffer plate and the pressure sensor.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In this invention, by setting up a blocking cover and a blocking plate, the first damping rod can reduce the vibration of the bottom of the capacitor body, and the two sides of the capacitor body can be abutted by abutting rollers to reduce the lateral vibration of the capacitor body. Combining these two methods improves the impact resistance of the capacitor body during use, effectively avoids displacement and insulation damage caused by collision during the vibration of the capacitor body during impact, and improves the voltage resistance stability of the capacitor body itself. By using the abutment rollers to apply elastic micro-compression to the capacitor body, the thermal expansion of the capacitor body can be constrained, and the uncontrolled bulging deformation of the capacitor body can be suppressed. Under high current operation, the capacitor body will heat up and expand slightly. At this time, by using the abutment rollers on both sides to maintain a moderate pre-tight compression of the capacitor body, the excessive lateral deformation of the capacitor body can be limited, preventing the film layers of the capacitor body from loosening and delamination, and preventing the capacitor body from bulging and crushing on one side, thus reducing the risk of insulation breakage and breakdown from the source. When the capacitor body deforms due to the contact roller contacting the side wall of the capacitor body, the side wall of the capacitor body will extend outward and squeeze the contact roller. At this time, the buffer plate slides into the third slot and squeezes the pressure sensor through the spring telescopic rod. The pressure sensor transmits the measured pressure value to the background control system. The background control system compares the measured pressure value with the standard pressure value. If the detected pressure value exceeds the standard pressure value variation range, it indicates that the capacitor body has deformed. This operation method can complete the deformation monitoring of the capacitor body, which greatly improves the safety of the equipment. When the capacitor body is carrying a large current, the operating temperature of the capacitor body will rise. At this time, start the blower connected to one air inlet and the suction fan connected to the other air inlet. The air outlet on the side connected to the blower blows air towards the capacitor body. The airflow passes through the capacitor body and reaches the other end of the baffle. Since the air inlet on this side is connected to the suction fan, the airflow can be absorbed by the air outlet when it reaches the air outlet. Through this operation, a stable airflow can be formed on the outside of the capacitor body, realizing active cooling of the capacitor body, thereby improving the stability of the capacitor body under high current conditions. When cooling the capacitor body, multiple rotating plates and extension plates on both sides of the capacitor body can act as heat dissipation fins, which can regulate the heat dissipation gap of the capacitor body and ensure the uniformity of the airflow at both ends of the capacitor body. Through the design of uniform clamping distance of rotating plates and extension plates on both sides of the capacitor body, the gap on both sides of the capacitor body is uniform, the airflow will not be biased, the heat dissipation is more uniform, local high temperature hot spots are eliminated, and the heat dissipation effect of the equipment on the capacitor body is increased. Two clamping rods hold the terminal block. Then, another connector moves to the clamping position of the terminal block. A rotary motor drives the connector to rotate, and an electric shaft drives the rotating rod to rotate, causing two laser range sensors on the clamping rod to move to both sides of the clamping rod where the terminal block is held. The laser range sensors can measure the distance between the clamping rod and the laser range sensors. Then, the clamping rod holding the terminal block causes the terminal block to shake. The distance change detected during the shaking is transmitted to the background control system. If the detected distance change exceeds the standard distance change range, it indicates that the terminal block is loose. When a loose terminal is detected, the bolt at the terminal is clamped by a clamping rod, and then the connecting part is rotated by a rotary motor. At this time, the terminal bolt is automatically tightened by clamping the clamping rod, which increases the ease of use of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a schematic diagram of the first damping rod mounting structure of the present invention; Figure 4 This is a schematic diagram of the rotating plate mounting structure of the present invention; Figure 5 For the present invention Figure 4Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the mounting structure of the second rotating motor and the extension slot of the present invention; Figure 7 This is a schematic diagram of the electric extension rod mounting structure of the present invention; Figure 8 This is a schematic diagram of the installation structure of the pressure sensor and spring telescopic rod of the present invention; Figure 9 This is a schematic cross-sectional view of the barrier structure of the present invention; Figure 10 This is a schematic diagram of the rotating motor mounting structure of the present invention; Figure 11 This is a schematic diagram of the barrier plate structure of the present invention.

[0017] In the diagram: 1. Baffle; 2. Baffle plate; 3. First slot; 4. Rotating plate; 5. Air inlet; 6. Base plate; 7. Second slot; 8. Threaded rod; 9. First rotating motor; 10. Capacitor body; 11. Air outlet; 12. First damping rod; 13. Moving slide; 14. Moving electric slider; 15. Moving plate; 16. Displacement slide; 17. Displacement electric slider; 18. Electric lifting rod; 19. Connector; 20. Rotating rod; 21. First slide ; 22. First electric slider; 23. Clamping rod; 24. Laser rangefinder sensor; 25. Second rotary motor; 26. Extension groove; 27. Extension plate; 28. Buffer plate; 29. ​​Abutment roller; 30. Electric extension rod; 31. Second damping rod; 32. Stabilizing groove; 33. Stabilizing slider; 34. Third slot; 35. Pressure sensor; 36. Spring telescopic rod; 37. Sliding block; 38. Electric telescopic rod; 39. Barrier plate; 40. Rotary motor. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0019] Reference Figure 1-11 The high voltage and high current withstand metal-free safety film capacitor includes a base plate 6, a capacitor body 10 is movably mounted on the top of the base plate 6, a blocking cover 1 is mounted on the outside of the capacitor body 10 on the top of the base plate 6, a detection mechanism and a cooling mechanism are provided inside the blocking cover 1, and blocking plates 2 are movably mounted on both sides of the blocking cover 1 on the top of the base plate 6, and a buffer mechanism is provided on the blocking plates 2.

[0020] As a technical optimization of the present invention, a plurality of first damping rods 12 are uniformly installed on the bottom of the capacitor body 10, with the mounting ends of the first damping rods 12 facing downwards and connected to the top of the base plate 6. The detection mechanism can detect the stability of the terminals of the capacitor body 10, the cooling mechanism can actively cool the capacitor body 10 to achieve stability of the capacitor body 10 under high current conditions, and the buffer mechanism can actively dampen the capacitor body 10, improve the impact resistance of the capacitor body 10 during use, effectively prevent the capacitor body 10 from displacing or collided during vibration caused by impact, and improve the voltage withstand stability of the capacitor body 10 itself.

[0021] As an optimized technical solution of the present invention, the detection mechanism includes a movable plate 15, a connector 19, and clamping rods 23. The movable plate 15 is movably installed on the top of the inner wall of the barrier cover 1, and the connector 19 is movably connected to the bottom of the movable plate 15. The bottom of the connector 19 has a groove design, and a rotating rod 20 is rotatably installed on the inner wall of both ends of the groove at the bottom of the connector 19 by means of an embedded electric rotating shaft. Two clamping rods 23 are movably installed on the bottom of the rotating rod 20. A laser rangefinder sensor 24 is embedded on the side of each clamping rod 23 facing each other. A cleaning brush can be installed on the bottom of the clamping rod 23. Through the design of the movable plate 15 and the connector 19, the rotating rod 20 can be driven to move inside the barrier cover 1 according to different usage requirements, thereby driving the clamping rods 23 to the preset usage position. The laser rangefinder sensor 24, in conjunction with the clamping rods 23, clamps the terminal of the capacitor body 10 and shakes it to realize the detection of the installation stability of the terminal.

[0022] As a technical optimization of the present invention, a movable groove 13 is provided on the top of the inner wall of the barrier cover 1, and a movable electric slider 14 is connected to the top of the movable plate 15. The movable electric slider 14 is slidably installed inside the movable groove 13. By sliding the movable electric slider 14 in the movable groove 13, the movable plate 15 can be moved inside the barrier cover 1 according to different usage requirements.

[0023] As a technical optimization of the present invention, a displacement groove 16 is provided at the bottom of the movable plate 15, and a rotary motor 40 is embedded in the top of the connecting member 19. The mounting end of the rotary motor 40 faces upward, and an electric lifting rod 18 is connected to the mounting end of the rotary motor 40. The mounting end of the electric lifting rod 18 faces upward, and a displacement electric slider 17 is connected to the mounting end of the electric lifting rod 18. The displacement electric slider 17 is slidably installed inside the displacement groove 16. By sliding the displacement electric slider 17 in the displacement groove 16, the electric lifting rod 18 can be moved on the movable plate 15 according to different usage requirements. The electric lifting rod 18 can drive the connecting member 19 to rise and fall according to different usage requirements, and the rotary motor 40 can drive the connecting member 19 to rotate according to different usage requirements.

[0024] As a technical optimization of the present invention, a first groove 21 is provided at the bottom of the rotating rod 20, and a first electric slider 22 is connected to the top of the clamping rod 23. The first electric slider 22 is slidably installed inside the first groove 21. By sliding the first electric slider 22 in the first groove 21, the clamping rod 23 can be moved on the rotating rod 20 according to different usage requirements.

[0025] As a technical optimization of the present invention, the cooling mechanism includes an air inlet 5 and an air outlet 11. Cavities are opened inside both end walls of the baffle 1. An air inlet 5 is opened on the outer end wall of the baffle 1, and a plurality of air outlets 11 are evenly opened on the inner end wall of the baffle 1. The air inlet 5 and the air outlets 11 are connected to the cavities on the end walls of the baffle 1. An electric telescopic rod 38 is installed on the top inner wall of the cavity on the end wall of the baffle 1. The telescopic end of the electric telescopic rod 38 faces downward, and the telescopic end of the electric telescopic rod 38 is connected to a baffle plate 39. The electric telescopic rod 38 drives the baffle plate 39 to move downward, so that the baffle plate 39 can block the air inlet 5 according to different usage requirements. The blower connected to one air inlet 5 and the suction fan connected to the other air inlet 5 are started. The air outlet 11 on the side connected to the blower blows air towards the capacitor body 10. The airflow passes through the capacitor body 10 and reaches the other end of the baffle 1. Since the air inlet 5 on this side is connected to the suction fan, the airflow can be absorbed by the air outlet 11 when it reaches the air outlet 11. Through this operation, a stable airflow can be formed on the outside of the capacitor body 10, realizing active cooling of the capacitor body 10, thereby improving the stability of the capacitor body 10 under high current conditions.

[0026] As a technical optimization of the present invention, the top of the base plate 6 has second slots 7 on both sides of the blocking cover 1. A threaded rod 8 is rotatably installed inside the second slot 7. A first rotating motor 9 is installed on each of the two end walls of the base plate 6. The output end of the first rotating motor 9 movably passes through the end wall of the base plate 6 and is connected to the threaded rod 8. A sliding block 37 is slidably installed inside the second slot 7. The threaded rod 8 is threaded through the sliding block 37, and the top of the sliding block 37 is connected to the bottom of the blocking plate 2. By rotating the threaded rod 8 through the first rotating motor 9, the sliding block 37 can be moved inside the second slot 7 according to different usage requirements, thereby enabling the blocking plate 2 to move on the base plate 6.

[0027] As a technical optimization of the present invention, the buffer mechanism includes a rotating plate 4, an extension plate 27, and a buffer plate 28. A first slot 3 is provided through the side wall of the blocking plate 2. Multiple rotating plates 4 are uniformly rotatably installed on the inner wall of the first slot 3. An extension slot 26 is provided on the side of the rotating plate 4 facing the blocking cover 1. An extension plate 27 is movably installed inside the extension slot 26. A third slot 34 is provided on the side of the extension plate 27 away from the rotating plate 4. A buffer plate 28 is slidably installed inside the third slot 34. An abutment roller 29 is embedded and rotatably installed on the side of the buffer plate 28 away from the rotating plate 4. A cavity is provided inside the rotating plate 4, and coolant is injected into the cavity. By extending the extension plate 27 toward the capacitor body 10, the abutting roller 29 on the buffer plate 28 abuts against the outer side of the capacitor body 10, which can achieve lateral shock absorption of the capacitor body 10. By abutting the outer wall of the capacitor body 10 with the rotating plate 4, combined with the injection of coolant into the internal cavity of the rotating plate 4, the capacitor body 10 can be cooled down more quickly, increasing the stability of the capacitor body 10 in use.

[0028] As a technical optimization of the present invention, a second rotating motor 25 is embedded in one side wall of the rotating plate 4. The mounting end of the second rotating motor 25 is connected to the inner wall of the first slot 3. The other side wall of the rotating plate 4 is rotatably connected to the inner wall of the first slot 3. Two electric extension rods 30 are embedded in the bottom of the inner wall of the extension slot 26. The extension ends of the electric extension rods 30 face the extension plate 27 and are connected to the extension plate 27. Stable sliding grooves 32 are provided on the inner walls of both ends of the third slot 34. Stable sliders 33 are slidably installed inside the stable sliding grooves 32. The side of the stable sliders 33 facing the buffer plate 28 is connected to the buffer plate 28. Multiple second damping rods 31 are connected between the buffer plate 28 and the bottom of the inner wall of the third slot 34. A pressure sensor 35 is installed at the bottom of the inner wall of the third slot 34. A spring telescopic rod 36 is connected between the buffer plate 28 and the pressure sensor 35. The electric extension rod 30 can drive the extension plate 27 to extend in the extension groove 26 according to different usage requirements. The sliding of the stabilizing slider 33 in the stabilizing groove 32 increases the sliding stability of the buffer plate 28 in the third slot 34. The capacitor body 10 is abutted by the abutting rollers 29 on both sides, allowing the capacitor body 10 to absorb lateral vibrations by sliding the buffer plate 28 inside the third slot 34 and pressing the second damping rod 31. During use, the capacitor body 10 abuts against the side wall of the capacitor body 10 via the abutting rollers 29. When the capacitor body 10 deforms, the sidewall of the capacitor body 10 extends outward and presses against the abutment roller 29. At this time, the buffer plate 28 slides into the third slot 34 and presses the pressure sensor 35 through the spring telescopic rod 36. The pressure sensor 35 transmits the measured pressure value to the background control system. The background control system compares the measured pressure value with the standard pressure value. If the detected pressure value exceeds the standard pressure value variation range, it indicates that the capacitor body 10 has deformed. This operation method can complete the deformation monitoring of the capacitor body 10, which greatly improves the safety of the equipment.

[0029] In use, the electric drive devices used in this invention are all powered by an external power source connected by wires. The device controls the electrical devices through a preset control system. The pressure sensor 35 and capacitor body 10 used in this device are existing mature technologies, so they will not be described in detail here. The side wall of the baffle 1 is provided with a connection hole for wire connection between the device and the capacitor body 10. There are two air inlets 5 on the baffle 1. One air inlet 5 is connected to a preset blower outside the device through a conduit, and the other air inlet 5 is connected to a preset suction fan outside the device through a conduit. The electric drive devices used in this device are all provided with an insulating layer on the outside.

[0030] During use, the capacitor body 10 rotates the rotating plate 4 to the position shown in the image. Figure 1 In the indicated state, the first rotating motor 9 drives the threaded rod 8 to rotate, causing the sliding block 37 to slide inside the second slot 7. This moves the blocking plate 2 to the preset usage position on both sides of the blocking cover 1. Then, the electric extension rod 30 drives the extension plate 27 to extend, causing the extension plate 27 to move towards the capacitor body 10 until the abutment roller 29 abuts against the side wall of the capacitor body 10. Through this operation, the vibration generated by the capacitor body 10 during use is transmitted to the first damping rod 12 through the base plate 6. Since the bottom of the capacitor body 10 is connected to the first damping rod 12, the first damping rod 12 can dampen the bottom of the capacitor body 10. The capacitor body 10 is subjected to vibration damping by abutting rollers 29 on both sides. When the capacitor body 10 is subjected to lateral vibration, the buffer plate 28 slides inside the third slot 34 and squeezes the second damping rod 31 to dampen the vibration. Furthermore, the abutting rollers 29 do not affect the vertical floating vibration damping of the capacitor body 10 itself when they abut against it. Therefore, the combination of these two methods can achieve vibration damping of the capacitor body 10 during use, improve the impact resistance of the capacitor body 10 during use, effectively prevent the capacitor body 10 from being displaced or collided during the vibration caused by impact, and improve the voltage withstand stability of the capacitor body 10 itself.

[0031] Furthermore, by applying elastic micro-pressure to the capacitor body 10 through the abutment rollers 29, the capacitor body 10 can be constrained from thermal expansion, thus suppressing uncontrolled bulging deformation. Under high current conditions, the capacitor body 10 will heat up and slightly expand and bulge. At this time, by maintaining moderate pre-tight pressure on the capacitor body 10 through the abutment rollers 29 on both sides, excessive lateral deformation of the capacitor body 10 can be limited, preventing the film layers of the capacitor body 10 from loosening and delamination, and preventing unilateral bulging and uneven loading of the capacitor body 10, thereby reducing the risk of insulation breakage and breakdown from the source.

[0032] When the capacitor body 10 is in use, the abutment roller 29 abuts against the side wall of the capacitor body 10. When the capacitor body 10 deforms, the side wall of the capacitor body 10 extends outward and squeezes the abutment roller 29. At this time, the buffer plate 28 slides into the third slot 34 and squeezes the pressure sensor 35 through the spring telescopic rod 36. The pressure sensor 35 transmits the measured pressure value to the background control system. The background control system compares the measured pressure value with the standard pressure value. If the detected pressure value exceeds the standard pressure value variation range, it indicates that the capacitor body 10 has deformed. This operation method can complete the deformation monitoring of the capacitor body 10, which greatly improves the safety of the equipment.

[0033] During use, when the capacitor body 10 is carrying a large current, the operating temperature of the capacitor body 10 will rise. At this time, a blower connected to one air inlet 5 and a suction fan connected to the other air inlet 5 are started. The air outlet 11 on the side connected to the blower blows air towards the capacitor body 10. The airflow passes through the capacitor body 10 and reaches the other end of the baffle 1. Since the air inlet 5 on this side is connected to the suction fan, the airflow can be absorbed by the air outlet 11 when it reaches the air outlet 11. Through this operation, a stable airflow can be formed on the outside of the capacitor body 10, realizing active cooling of the capacitor body 10, thereby improving the stability of the capacitor body 10 under high current conditions. When the operating temperature of the capacitor body 10 is detected to exceed the preset operating temperature, the rotating plate 4 extends towards the capacitor body 10. At this time, after the abutting roller 29 squeezes the capacitor body 10, the abutting roller 29 and the buffer plate 28 retract into the interior of the third slot 34 until the end wall of the rotating plate 4 abuts against the outer wall of the capacitor body 10. Combined with the method of injecting coolant into the internal cavity of the rotating plate 4, the temperature of the capacitor body 10 can be transferred through the rotating plate 4, and the temperature of the capacitor body 10 can be discharged through the coolant, which can achieve accelerated cooling of the capacitor body 10 and increase the operating stability of the capacitor body 10. Combined with the above-mentioned use of the vent 11, it can achieve rapid cooling of the capacitor body 10 under high temperature conditions, increasing the operating stability of the device. During the process of the rotating plate 4 abutting against the capacitor body 10 for cooling, the pressure sensor 35 detects and compares the abutting pressure value to prevent the rotating plate 4 from damaging the capacitor body 10 due to excessive abutting pressure.

[0034] When cooling the capacitor body 10, the multiple rotating plates 4 and extension plates 27 on both sides of the capacitor body 10 can act as heat dissipation fins, which can regulate the heat dissipation gap of the capacitor body 10 and ensure the uniformity of the airflow at both ends of the capacitor body 10. Through the design of uniform clamping distance of the rotating plates 4 and extension plates 27 on both sides of the capacitor body 10, the gap on both sides of the capacitor body 10 is uniform, the airflow will not be biased, the heat dissipation is more uniform, local high temperature hot spots are eliminated, and the heat dissipation effect of the equipment on the capacitor body 10 is increased.

[0035] When the stability of the top terminal of the capacitor body 10 needs to be tested during use, the extension plate 27 is extended by the electric extension rod 30, causing the abutment roller 29 and the buffer plate 28 to retract into the third slot 34. At this time, the end wall of the extension plate 27 abuts against the side wall of the capacitor body 10, thus fixing the capacitor body 10 and preventing it from moving during the testing process, which would affect the accuracy of the test results. Then, a moving plate 15 moves to above the terminal to be tested, and the connecting piece 19 is lowered by the electric lifting rod 18, causing the clamping rod 23 to move to the terminal and clamp the terminal with the two clamping rods 23. Another connector 19 moves to the clamping position of the clamping rod 23 for the terminal block. The two laser range sensors 24 on the clamping rod 23 are moved to the two sides of the clamping rod 23 for the terminal block by the rotation motor 40 driving the connector 19 to rotate and the electric shaft driving the rotating rod 20 to rotate. The laser range sensors 24 can measure the distance between the clamping rod 23 for the terminal block and the laser range sensors 24. Then, the clamping rod 23 for the terminal block causes the terminal block to shake while clamping the terminal block. At this time, the change in distance value detected during the shaking is transmitted to the background control system. If the change in distance value exceeds the standard distance value change range, it indicates that the terminal block is loose. When a loose terminal is detected, the bolt at the terminal is clamped by the clamping rod 23, and then the connecting piece 19 is rotated by the rotary motor 40. At this time, the terminal bolt is clamped by the clamping rod 23, which can automatically tighten the terminal and increase the ease of use of the device.

[0036] During use, the capacitor body 10 is cleaned by a cleaning brush located at the bottom of the clamping rod 23. The cleaning brush at the bottom of the clamping rod 23 abuts against the top of the capacitor body 10 and moves to brush the top of the capacitor body 10. At this time, the blower and suction fan connected to the baffle cover 1 are activated to actively clean the dust brushed off. This operation method can achieve automatic cleaning of the top of the capacitor body 10, preventing dust from accumulating on the top of the capacitor body 10 and causing short circuits or other malfunctions that affect the normal use of the capacitor body 10.

[0037] When the deformation of the capacitor body 10 exceeds the preset deformation, it is determined that the capacitor body 10 has been severely damaged. At this time, the electric telescopic rod 38 drives the barrier plate 39 to extend downward, so that the barrier plate 39 completes the sealing of the air inlet 5. The second rotating motor 25 drives the rotating plate 4 to rotate, so that the rotating plate 4 rotates to a vertically downward working state. The top of the inner wall of the first slot 3 is provided with a rubber sealing block, which can abut and seal the top of the top rotating plate 4. Then, the electric extension rod 30 drives the extension plate 27 to extend, so that the top of the extension plate 27 can abut the top of the lower rotating plate 4. The bottom of the extension plate 27 on the bottom rotating plate 4 abuts the bottom end of the inner wall of the first slot 3. Through this operation, the barrier plate 2... A sealed baffle plate 2 is formed, and then the baffle plate 2 moves toward the baffle cover 1 until the side wall of the baffle plate 2 abuts against the side wall of the baffle cover 1. At this time, the baffle cover 1 and the baffle plate 2 seal the capacitor body 10, so that the capacitor body 10 is in a closed space. In this way, when the capacitor body 10 is damaged, the damaged capacitor body 10 can be isolated separately, which can effectively prevent the spread of high voltage arc, high temperature smoke and explosion fragments from the damaged capacitor body 10, prevent insulation deterioration and fault chain propagation, and ensure the safety of other undamaged capacitor bodies 10. At the same time, this method of isolation also makes it easier for staff to quickly find the damaged capacitor body 10 and repair it. During the process of isolating and protecting the capacitor body 10 by rotating plate 4 and blocking plate 2, the cooling liquid inside rotating plate 4 can absorb and cool the temperature of the capacitor body 10 when it catches fire, which can effectively prevent the damaged capacitor body 10 from damaging the undamaged capacitor body 10 on the outside.

[0038] When the baffle plate 2 abuts against the side of the baffle cover 1, it is clamped by two sets of clamping rods 23 respectively. Figure 11 The reinforcing ribs on the two baffle plates 2 shown can increase the contact stability of the baffle plates 2 with the baffle cover 1 through this operation method. The design of the reinforcing ribs can increase the structural stability of the baffle plates 2.

[0039] When the capacitor body 10 is not in use, the capacitor body 10 is sealed by the barrier cover 1 and the barrier plate 2, which can prevent the capacitor body 10 from dust and increase the ease of use of the device.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A metal-free safety film capacitor with high voltage and high current withstand capability, comprising a base plate (6), characterized in that, The base plate (6) is movably mounted on the top of the capacitor body (10). A blocking cover (1) is mounted on the outside of the capacitor body (10) on the top of the base plate (6). The blocking cover (1) is equipped with a detection mechanism and a cooling mechanism. A blocking plate (2) is movably mounted on both sides of the blocking cover (1) on the top of the base plate (6). A buffer mechanism is provided on the blocking plate (2).

2. The metal-free safety film capacitor with high withstand voltage and high current as described in claim 1, characterized in that, Multiple first damping rods (12) are evenly installed on the bottom of the capacitor body (10). The mounting ends of the first damping rods (12) face downwards and are connected to the top of the base plate (6).

3. The metal caseless safety thin film capacitor with high voltage resistance and large current resistance according to claim 1, characterized in that, The detection mechanism includes a movable plate (15), a connector (19), and a clamping rod (23). The movable plate (15) is movably installed on the top of the inner wall of the barrier cover (1). The connector (19) is movably connected to the bottom of the movable plate (15). The bottom of the connector (19) is designed with a groove. A rotating rod (20) is rotatably installed on the inner wall of both ends of the groove at the bottom of the connector (19) by embedding an electric rotating shaft. Two clamping rods (23) are movably installed at the bottom of the rotating rod (20). A laser rangefinder sensor (24) is embedded on the side of the two clamping rods (23) facing each other. A cleaning brush can be installed at the bottom of the clamping rod (23).

4. The metal caseless safety thin film capacitor with high voltage resistance and large current resistance according to claim 3, characterized in that, The top of the inner wall of the shield (1) is provided with a movable slide groove (13), and the top of the movable plate (15) is connected to a movable electric slider (14), which is slidably installed inside the movable slide groove (13).

5. The metal caseless safety thin film capacitor with high voltage and current resistance according to claim 3, wherein The bottom of the movable plate (15) is provided with a displacement groove (16), and a rotary motor (40) is embedded in the top of the connector (19). The mounting end of the rotary motor (40) faces upward, and the mounting end of the rotary motor (40) is connected to an electric lifting rod (18). The mounting end of the electric lifting rod (18) faces upward, and the mounting end of the electric lifting rod (18) is connected to a displacement electric slider (17). The displacement electric slider (17) is slidably installed inside the displacement groove (16).

6. The metal caseless safety thin film capacitor with high voltage and current endurance according to claim 3, wherein, The bottom of the rotating rod (20) is provided with a first sliding groove (21), and the top of the clamping rod (23) is connected to a first electric slider (22), which is slidably installed inside the first sliding groove (21).

7. The metal caseless safety thin film capacitor with high voltage and current endurance according to claim 1, wherein, The cooling mechanism includes an air inlet (5) and an air outlet (11). Both ends of the baffle (1) have cavities. The outer end of the baffle (1) has an air inlet (5). The inner end of the baffle (1) has multiple air outlets (11). The air inlet (5) and the air outlets (11) are connected to the cavities on the end walls of the baffle (1). An electric telescopic rod (38) is installed on the top inner wall of the cavity on the end wall of the baffle (1). The telescopic end of the electric telescopic rod (38) faces downward. The telescopic end of the electric telescopic rod (38) is connected to a baffle plate (39).

8. The metal caseless safety thin film capacitor with high voltage and current endurance according to claim 1, wherein, The top of the base plate (6) has a second slot (7) on both sides of the blocking cover (1). A threaded rod (8) is rotatably installed inside the second slot (7). A first rotating motor (9) is installed on both end walls of the base plate (6). The output end of the first rotating motor (9) movably passes through the end wall of the base plate (6) and is connected to the threaded rod (8). A sliding block (37) is slidably installed inside the second slot (7). The threaded rod (8) threadedly passes through the sliding block (37). The top of the sliding block (37) is connected to the bottom of the blocking plate (2).

9. The metal caseless safety thin film capacitor with high voltage and current endurance according to claim 1, wherein, The buffer mechanism includes a rotating plate (4), an extension plate (27), and a buffer plate (28). A first slot (3) is provided through the side wall of the blocking plate (2). Multiple rotating plates (4) are evenly rotated and installed on the inner wall of the first slot (3). An extension slot (26) is provided on the side of the rotating plate (4) facing the blocking cover (1). An extension plate (27) is movably installed inside the extension slot (26). A third slot (34) is provided on the side of the extension plate (27) away from the rotating plate (4). A buffer plate (28) is slidably installed inside the third slot (34). An abutment roller (29) is embedded and rotated on the side of the buffer plate (28) away from the rotating plate (4). A cavity is provided inside the rotating plate (4), and coolant is injected into the cavity.

10. The metal caseless safety thin film capacitor with high voltage and current resistance according to claim 9, wherein, A second rotating motor (25) is embedded in the side wall of one end of the rotating plate (4). The mounting end of the second rotating motor (25) is connected to the inner wall of the first slot (3). The other side wall of the rotating plate (4) is rotatably connected to the inner wall of the first slot (3). Two electric extension rods (30) are embedded in the bottom of the inner wall of the extension slot (26). The extension ends of the electric extension rods (30) face the extension plate (27) and are connected to the extension plate (27). The third slot (34) Stable grooves (32) are provided on the inner walls of both ends of the buffer plate (28). Stable sliders (33) are slidably installed inside the stable grooves (32). The side of the stable sliders (33) facing the buffer plate (28) is connected to the buffer plate (28). Multiple second damping rods (31) are connected between the buffer plate (28) and the bottom of the inner wall of the third groove (34). A pressure sensor (35) is installed at the bottom of the inner wall of the third groove (34). A spring telescopic rod (36) is connected between the buffer plate (28) and the pressure sensor (35).

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