An electric power capacitor

Abstract

The present application relates to the technical field of power capacitor, and particularly relates to a power capacitor, which comprises a power capacitor body, both sides of the power capacitor body are provided with radiating fins, both sides of the power capacitor body are also provided with air cooling assemblies, both sides of the bottom end of the power capacitor body are fixedly provided with bases, the radiating fins are provided with channels, the top end of the base is provided with a liquid cooling assembly, the liquid cooling assembly is communicated with the channels of the radiating fins, and one side of the radiating fins is also provided with a spraying assembly; the air cooling assembly, the liquid cooling assembly and the spraying assembly are arranged, the air cooling assembly and the liquid cooling assembly can effectively enhance the heat dissipation efficiency and heat dissipation effect of the radiating fins, the air cooling assembly, the liquid cooling assembly and the spraying assembly can cooperate with each other to clean the dust on the fan blades and the radiating fins, the cleaning of the fan blades and the radiating fins during long-term use is ensured, and the heat dissipation efficiency and heat dissipation effect are further ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power capacitors, and in particular to a power capacitor. BACKGROUND

[0002] Power capacitors are capacitors used in power systems and electrical equipment, and with the development of power capacitor technology, they are widely used in factory power distribution systems, residential power distribution systems, commercial buildings, traffic tunnel power distribution systems, outdoor distribution boxes and other fields.

[0003] The patent CN216671399U relates to a power capacitor, which comprises a shell body, a core inside the shell body, an insulation layer between the core and the shell body, and a flame-retardant filler around the core. An aluminum cover is provided on the shell body to seal the shell body. The aluminum cover is provided with a pressure relief valve, and the top of the aluminum cover is provided with a downwardly protruding elastic mounting ring in the shape of a V. Although this device improves heat dissipation and enhances the installation and sealing between the aluminum cover and the metal shell, the heat dissipation effect is limited when it relies solely on the heat sink for heat dissipation. When the heat sink cannot meet the heat dissipation needs of the power capacitor, high temperature can easily damage the power capacitor. In addition, dust can accumulate on the heat sink during long-term use, which can further reduce the heat dissipation efficiency and effect of the heat sink.

[0004] At the same time, when the power capacitor is installed and used, the position of the power capacitor in contact with the ground is easily affected by ground moisture and contaminated with water stains. The presence of water stains can easily cause a short circuit in the power capacitor circuit, leading to a fire hazard. SUMMARY

[0005] To solve the above technical problems, the present application provides a high-efficiency heat dissipation and energy-saving and environmentally friendly power capacitor.

[0006] The power capacitor of the present application comprises a power capacitor body, heat sinks are provided on both sides of the power capacitor body, air cooling components are provided on both sides of the power capacitor body, bases are fixedly provided on both sides of the bottom end of the power capacitor body, channels are provided in the heat sinks, liquid cooling components are provided on the top end of the bases, the liquid cooling components are in communication with the channels of the heat sinks, spray components are provided on one side of the heat sinks, controllers are provided on the top end of the bases, and temperature sensors are provided on the top end of the heat sinks.

[0007] The air cooling components comprise a motor.

[0008] The liquid cooling assembly comprises a liquid storage tank, a liquid pump is arranged at the lower side end of the liquid storage tank, and an outlet pipe is arranged at the output end of the liquid pump and communicates with the channel of the heat dissipation fin.

[0009] The spraying assembly comprises a spraying pipe, the spraying pipe is fixedly arranged on the side of the heat dissipation fin close to the air cooling assembly, a glass ball is arranged in the spraying pipe, a breaking assembly is further arranged at the bottom end of the spraying pipe corresponding to the glass ball, and an electric control valve is arranged at the communication position of the spraying pipe and the heat dissipation fin.

[0010] Preferably, the motor is fixedly arranged at the side end of the power capacitor body, a protective cover is arranged at the outer end of the motor, the end of the protective cover close to the heat dissipation fin is closed, the output end of the motor penetrates through the protective cover through a bearing, a rotating disc is fixedly arranged at the output end of the motor, and a fan blade is fixedly arranged at the outer end of the rotating disc.

[0011] Preferably, the liquid storage tank is fixedly arranged at the top end of the base, the liquid pump is fixedly arranged at the side of the liquid storage tank close to the heat dissipation fin, the outlet pipe communicates with the input end of the channel of the heat dissipation fin, a recovery pipe is arranged at the top end of the liquid storage tank and communicates with the output end of the channel of the heat dissipation fin, and the liquid stored in the liquid storage tank is a non-conductive fluorinated liquid.

[0012] Preferably, the glass ball is fixedly arranged at the inner side top end of the spraying pipe, the lower end of the glass ball is spaced apart from the spraying pipe, the breaking assembly comprises a moving rod, the moving rod is arranged at the bottom end of the spraying pipe and can move up and down.

[0013] Preferably, a limiting plate is fixedly arranged at the bottom end of the moving rod, the limiting plate is connected with the spraying pipe through a pressure spring, the pressure spring is located at the outer end of the moving rod, a ferromagnet is arranged at the top end of the moving rod, the ferromagnet is located between the glass ball and the spraying pipe, and an electromagnet is arranged at the outside of the top end of the spraying pipe.

[0014] Preferably, an isolation box is arranged between the two bases, drying assemblies are further arranged at the two sides of the power capacitor body, the drying assemblies are located at the side of the heat dissipation fin away from the air cooling assembly, and the drying assemblies communicate with the isolation box.

[0015] Preferably, the drying assembly comprises a wind collecting cover, the wind collecting cover is fixedly arranged at the side end of the power capacitor body, the wind collecting cover is located at the side of the heat dissipation fin away from the air cooling assembly, the side of the wind collecting cover away from the air cooling assembly is arc-shaped, and a first air pipe is arranged at the bottom end of the wind collecting cover.

[0016] Preferably, the base is provided with a ventilation channel, the first air pipe communicates with the ventilation channel, a second air pipe is arranged at the side of the isolation box close to the base, and the second air pipe communicates with the ventilation channel.

[0017] Preferably, a plurality of heat dissipation holes are arranged on the heat dissipation fins, the channels on the heat dissipation fins are in an 'S' shape, the channels on the heat dissipation fins avoid the heat dissipation holes, and the spraying assembly is aligned with the air cooling assembly.

[0018] Preferably, the air cooling assemblies on both sides of the power capacitor body are arranged into three groups, and the spraying assemblies on the heat dissipation fins are arranged into three groups, and each group of the air cooling assemblies corresponds to a group of the spraying assemblies.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] 1. By arranging the air cooling assembly, the liquid cooling assembly and the spraying assembly, the heat dissipation efficiency and effect of the heat dissipation fins can be effectively improved with the assistance of the air cooling assembly and the liquid cooling assembly, and the dust on the fan blades and the heat dissipation fins can be cleaned by the cooperation of the air cooling assembly, the liquid cooling assembly and the spraying assembly, so that the fan blades and the heat dissipation fins can be kept clean for a long time, and the heat dissipation efficiency and effect are further improved.

[0021] 2. By arranging the spraying assembly and the crushing assembly, the fluorinated liquid can be sprayed on the outer end of the power capacitor body to enhance heat dissipation, prevent fire and assist in fire extinguishing when the temperature of the power capacitor body is too high and there is a risk of fire, so that the safety and heat dissipation effect of the equipment are improved.

[0022] 3. By arranging the air cooling assembly and the drying assembly, the heat of the power capacitor body can be guided into the isolation box between the power capacitor body and the ground to dry the moisture, so that the short circuit of the power capacitor body caused by the ground moisture is reduced, and the stability and safety of the equipment are improved. DETAILED DESCRIPTION

[0023] Figure 1 is a structural schematic view of the application;

[0024] Figure 2 is a structural schematic view of another direction of the application;

[0025] Figure 3 is a structural schematic view of the air cooling assembly;

[0026] Figure 4 is a structural schematic view of the liquid cooling assembly;

[0027] Figure 5 is a sectional structural schematic view of the spraying assembly;

[0028] Figure 6 is a sectional structural schematic view of the air cooling assembly;

[0029] Figure 7is a sectional view of the crushing assembly;

[0030] Figure 8 is a sectional view of the drying assembly;

[0031] Figure 9 is a schematic view of the wind direction structure of the air collecting cover;

[0032] Figure 10 is a schematic view of the "S" shaped channel of the heat sink;

[0033] Reference signs: 1, power capacitor body; 2, heat sink; 3, air cooling assembly; 4, base; 5, liquid cooling assembly; 6, spraying assembly; 7, crushing assembly; 8, isolation box; 9, drying assembly; 10, channel; 11, temperature sensor; 301, motor; 302, rotating disc; 303, fan blade; 304, protective cover; 501, liquid storage tank; 502, liquid outlet pipe; 503, liquid pump; 504, recovery pipe; 601, spraying pipe; 602, glass ball; 701, moving rod; 702, limiting plate; 703, pressure spring; 704, ferromagnetic body; 705, electromagnet; 901, air collecting cover; 902, first air pipe; 903, air duct; 904, second air pipe. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0035] Embodiment 1

[0036] As shown in Figures 1 to 10 A power capacitor includes a power capacitor body 1, heat sinks 2 are arranged on both sides of the power capacitor body 1, air cooling assemblies 3 are arranged on both sides of the power capacitor body 1, the power capacitor body 1 is fixedly arranged at the top end of two bases 4, channels 10 are arranged in the heat sinks 2, liquid cooling assemblies 5 are arranged at the top end of the bases 4, the liquid cooling assemblies 5 are in communication with the channels 10 of the heat sinks 2, spraying assemblies 6 are arranged on the heat sinks 2, controllers are arranged at the top end of the bases 4, the heat sinks 2 are used for heat dissipation of the power capacitor body 1, the air cooling assemblies 3 are used for heat dissipation of the heat sinks 2, temperature sensors 11 are arranged at the top end of the heat sinks 2, the liquid cooling assemblies 5 are used for heat dissipation of the heat sinks 2, and the spraying assemblies 6 are used for assisting the air cooling assemblies 3 to dissipate heat.

[0037] The air-cooling assembly 3 comprises a motor 301 fixedly arranged at the side end of the power capacitor body 1, a protective cover 304 arranged at the outer end of the motor 301, the protective cover 304 being closed at the end close to the cooling fin 2, the output end of the motor 301 penetrating through the protective cover 304, the output end of the motor 301 being fixedly arranged with a rotating disc 302, the outer end of the rotating disc 302 being fixedly arranged with a fan blade 303, the motor 301 driving the rotating disc 302 to rotate, the rotation of the rotating disc 302 generating wind force through the fan blade 303 to assist the cooling of the cooling fin 2, and the protective cover 304 being used for protecting the motor 301.

[0038] The liquid-cooling assembly 5 comprises a liquid storage tank 501, a liquid pump 503 arranged at the lower side end of the liquid storage tank 501, an outlet pipe 502 arranged at the output end of the liquid pump 503, the liquid pump 503 being fixedly arranged at the side of the liquid storage tank 501 close to the cooling fin 2, the outlet pipe 502 being in communication with the input end of the channel 10 of the cooling fin 2, a recovery pipe 504 arranged at the top end of the liquid storage tank 501, the recovery pipe 504 being in communication with the output end of the channel 10 of the cooling fin 2, the liquid stored in the liquid storage tank 501 being non-conductive fluorinated liquid, the liquid pump 503 being a power source of the liquid-cooling assembly 5, the fluorinated liquid in the liquid storage tank 501 being sent into the outlet pipe 502 under the assistance of the liquid pump 503, the fluorinated liquid in the outlet pipe 502 entering the channel 10 of the cooling fin 2, the fluorinated liquid in the channel 10 of the cooling fin 2 re-entering the liquid storage tank 501 through the recovery pipe 504 to complete circulation, thereby enhancing the cooling effect of the cooling fin 2.

[0039] The spraying assembly 6 comprises a spraying pipe 601 fixedly arranged at the side of the cooling fin 2 close to the air-cooling assembly 3, a glass ball 602 arranged in the spraying pipe 601, an electromagnet 705 arranged at the top of the outer end of the spraying pipe 601, an electric control valve arranged at the communication position of the spraying pipe 601 and the cooling fin 2, the glass ball 602 being fixedly arranged at the inner top end of the spraying pipe 601, the temperature value detected by the temperature sensor 11 rising with the increase of temperature, and the electric control valve being used for controlling the opening and closing of the spraying pipe 601.

[0040] Further, the bottom end of the spraying pipe 601 is arranged with a breaking assembly 7, the breaking assembly 7 comprising a moving rod 701 arranged at the bottom end of the spraying pipe 601 and capable of moving up and down, a limiting plate 702 fixedly arranged at the bottom end of the moving rod 701, the limiting plate 702 being connected with the spraying pipe 601 through a pressure spring 703, the pressure spring 703 being located at the outer end of the moving rod 701, a ferromagnet 704 arranged at the top end of the moving rod 701, the ferromagnet 704 being located between the glass ball 602 and the spraying pipe 601, the electromagnet 705 being electrified to attract the ferromagnet 704, so that the ferromagnet 704 moves close to the glass ball 602 and breaks the glass ball 602, thereby completely opening the spraying pipe 601, further enhancing the cooling effect of the cooling fin 2 and preventing fire.

[0041] The heat dissipation fin 2 is provided with a plurality of heat dissipation holes, the channel 10 on the heat dissipation fin 2 is in an "S" shape, the channel 10 on the heat dissipation fin 2 avoids the heat dissipation holes, the spraying assembly 6 is aligned with the air cooling assembly 3, the plurality of heat dissipation holes are beneficial to heat dissipation of the heat dissipation fin 2, and the channel 10 in the "S" shape is beneficial to heat dissipation of the heat dissipation fin 2 by the fluorinated liquid, and the spraying pipe 601 sprays the fluorinated liquid on the fan blade 303.

[0042] The air cooling assembly 3 on both sides of the power capacitor body 1 is provided in three groups, the spraying assembly 6 on the heat dissipation fin 2 is provided in three groups, each group of air cooling assemblies 3 corresponds to a group of spraying assemblies 6, and the three groups of air cooling assemblies 3 and the three groups of spraying assemblies 6 further strengthen the heat dissipation effect of the heat dissipation fin 2.

[0043] In use, the power capacitor body 1 generates heat during normal operation, the heat generated by the power capacitor body 1 is dissipated through the heat dissipation fin 2, and the temperature sensor 11 detects the temperature of the heat dissipation fin 2 in real time during heat dissipation of the heat dissipation fin 2.

[0044] With the increase of the temperature of the heat dissipation fin 2, the detection value of the corresponding temperature sensor 11 increases, when the detection value of the temperature sensor 11 reaches the first threshold value, the heat dissipation fin 2 cannot guarantee the heat dissipation effect of the power capacitor body 1, the controller controls the motor 301 to be opened, so that the fan blade 303 rotates to generate wind power, the heat dissipation fin 2 is cooled under the action of the wind power of the air cooling assembly 3, the heat dissipation efficiency of the power capacitor body 1 is strengthened, the operation of the power capacitor body 1 is more stable, and when the motor 301 is started, the wind power generated by the rotating fan blade 303 acts on the heat dissipation fin 2, the heat dissipation fin 2 is cooled under the action of the wind power, and the dust on the heat dissipation fin 2 is cleaned, and with the increase of the detection value of the temperature sensor 11, the rotating speed of the motor 301 also increases correspondingly, so that the wind power of the air cooling assembly 3 increases, and the heat dissipation effect of the heat dissipation fin 2 is strengthened.

[0045] With the continuous increase of the temperature of the heat dissipation fin 2, the detection value of the corresponding temperature sensor 11 increases, and when the detection value of the temperature sensor 11 reaches the second threshold value, the heat dissipation fin 2 still cannot guarantee the heat dissipation effect of the power capacitor body 1 under the action of the air cooling assembly 3, the controller controls the liquid pump 503 to start, and under the assistance of the liquid pump 503, the fluorinated liquid in the liquid storage tank 501 enters the "S" type channel 10 of the heat dissipation fin 2 through the liquid outlet pipe 502, and then the fluorinated liquid in the "S" type channel 10 of the heat dissipation fin 2 is recycled to the liquid storage tank 501 through the recovery pipe 504, so that the heat dissipation fin 2 is rapidly cooled, and the heat dissipation efficiency of the power capacitor body 1 is further improved, so that the operation of the power capacitor body 1 is more stable, and with the increase of the detection value of the temperature sensor 11, the power of the liquid pump 503 increases correspondingly, and the circulation speed of the fluorinated liquid increases, so that the heat dissipation efficiency of the heat dissipation fin 2 increases.

[0046] With the continuous increase of the temperature of the heat dissipation fin 2, the detection value of the corresponding temperature sensor 11 increases, and when the detection value of the temperature sensor 11 reaches the second threshold value, the heat dissipation fin 2 still cannot guarantee the heat dissipation effect of the power capacitor body 1 under the action of the air cooling assembly 3, the controller controls the liquid pump 503 to start, and under the assistance of the liquid pump 503, the fluorinated liquid in the liquid storage tank 501 enters the "S" type channel 10 of the heat dissipation fin 2 through the liquid outlet pipe 502, and then the fluorinated liquid in the "S" type channel 10 of the heat dissipation fin 2 is recycled to the liquid storage tank 501 through the recovery pipe 504, so that the heat dissipation fin 2 is rapidly cooled, and the heat dissipation efficiency of the power capacitor body 1 is further improved, so that the operation of the power capacitor body 1 is more stable, and with the increase of the detection value of the temperature sensor 11, the power of the liquid pump 503 increases correspondingly, and the circulation speed of the fluorinated liquid increases, so that the heat dissipation efficiency of the heat dissipation fin 2 increases.

[0047] With the continuous increase of the temperature of the heat dissipation fin 2, the temperature sensor 11 value continuously increases beyond the fourth threshold value, at which time the controller judges that the power capacitor body 1 is at risk of fire, the controller controls the power capacitor body 1 to be powered off, and the controller controls the electromagnet 705 to be powered on, after the electromagnet 705 is powered on, the electromagnet 705 is attracted to the ferromagnetic body 704, the ferromagnetic body 704 is moved close to the glass ball 602 and is broken, thereby the spray pipe 601 is completely opened, the fluorinated liquid sprayed by the spray pipe 601 is increased to ensure the heat dissipation effect of the equipment, and to prevent the occurrence of fire and to play the effect of auxiliary fire extinguishing, thereby improving the safety of the use of the equipment.

[0048] When the spray pipe 601 sprays the fluorinated liquid on the fan blade 303, the fluorinated liquid is not conductive, which ensures the heat dissipation effect and prevents the occurrence of fire, and ensures the stable operation of the electrical devices of the equipment.

[0049] Embodiment 2

[0050] Based on the power capacitor shown in embodiment 1, although the device further enhances the heat dissipation efficiency and effect of the heat dissipation fin 2 on the power capacitor body 1 during use, and the equipment has the ability to prevent fire, but during use, the heat of the power capacitor body 1 is dissipated without being utilized, which causes waste of energy, and the side of the power capacitor body 1 close to the ground is easily affected by ground moisture and is prone to short circuit and fire risk, therefore, the following technical scheme is proposed:

[0051] As shown in Figures 1 to 10 A power capacitor, two bases 4 are provided with an isolation box 8, and the two sides of the power capacitor body 1 are also provided with a drying assembly 9, the drying assembly 9 is located on the side of the heat dissipation fin 2 away from the air cooling assembly 3, the drying assembly 9 communicates with the isolation box 8, and the power capacitor body 1 is separated from the ground through the isolation box 8 to reduce the influence of ground moisture.

[0052] The drying assembly 9 comprises a wind collecting hood 901, the wind collecting hood 901 is fixedly arranged at the side end of the power capacitor body 1, the wind collecting hood 901 is located on the side of the heat dissipation fin 2 away from the air cooling assembly 3, the side of the wind collecting hood 901 away from the air cooling assembly 3 is arranged in an arc shape, the bottom end of the wind collecting hood 901 is provided with a first air pipe 902, the base 4 is provided with a ventilation channel 903, the first air pipe 902 communicates with the ventilation channel 903, the side of the isolation box 8 close to the base 4 is provided with a second air pipe 904, the second air pipe 904 communicates with the ventilation channel 903, the heat of the heat dissipation fin 2 enters into the wind collecting hood 901 under the action of wind, and then the heat enters into the isolation box 8 through the drying assembly 9, the heat dries the moisture in the isolation box 8, thereby ensuring the stable operation of the power capacitor body 1.

[0053] When the device is in use, when the motor 301 starts, the rotation of the fan blade 303 generates wind power, which blows the heat of the heat sink 2 to the air collector 901 under the assistance of the wind power, and under the assistance of the air collector 901, the heat enters the first air pipe 902, and the heat in the first air pipe 902 enters the isolation box 8 through the ventilation channel 903 under the assistance of subsequent wind power, the heat entering the isolation box 8 dries the moisture in the isolation box 8, ensures the dryness between the power capacitor body 1 and the ground, and makes the operation of the power capacitor body 1 more stable, and fully utilizes the energy.

[0054] The wind cooling assembly 3, the liquid cooling assembly 5, the spraying assembly 6 and the crushing assembly 7 are matched with each other to strengthen the heat dissipation efficiency and effect of the heat sink 2, the wind cooling assembly 3 and the drying assembly 9 are matched to fully utilize the heat generated by the power capacitor body 1, the heat dissipation efficiency and effect of the device are improved, and the environmental protection of the device is improved.

[0055] The power capacitor of the present application can be installed, connected or arranged in a common mechanical manner as long as the beneficial effects can be achieved.

[0056] All the technical and scientific terms used herein have the same meanings as those commonly understood by the person skilled in the art of the present application. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0057] The above is only the preferred embodiment of the present application, and it should be pointed out that for the person skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A power capacitor comprising a power capacitor body (1); characterized in that, The power capacitor body (1) is provided with a heat sink (2) on both sides, and is also provided with an air cooling assembly (3) on both sides, and is also provided with a base (4) on both sides of the bottom end of the power capacitor body (1), and the heat sink (2) is provided with a channel (10), and the base (4) is provided with a liquid cooling assembly (5) at the top end, and the liquid cooling assembly (5) is communicated with the channel (10) of the heat sink (2), and the heat sink (2) is also provided with a spraying assembly (6) on one side, and the base (4) is provided with a controller at the top end, and the heat sink (2) is provided with a temperature sensor (11) at the top end. The air cooling assembly (3) comprises a motor (301). The liquid cooling assembly (5) comprises a liquid storage tank (501), and the lower end of the liquid storage tank (501) is provided with a liquid pump (503), and the output end of the liquid pump (503) is provided with a liquid outlet pipe (502), and the liquid outlet pipe (502) is communicated with the channel (10) of the heat sink (2). The spraying assembly (6) comprises a spraying pipe (601), and the spraying pipe (601) is fixedly arranged on one side of the heat sink (2) close to the air cooling assembly (3), and the spraying pipe (601) is provided with a glass ball (602), and the spraying pipe (601) is also provided with a crushing assembly (7) at the bottom end corresponding to the glass ball (602), and the spraying pipe (601) is provided with an electric control valve at the communication position of the heat sink (2). Two bases (4) are provided with an isolation box (8), and the power capacitor body (1) is also provided with a drying assembly (9) on both sides, and the drying assembly (9) is located on the side of the heat sink (2) away from the air cooling assembly (3), and the drying assembly (9) is communicated with the isolation box (8). The drying assembly (9) comprises a wind collecting cover (901), and the wind collecting cover (901) is fixedly arranged on the side end of the power capacitor body (1), and the wind collecting cover (901) is located on the side of the heat sink (2) away from the air cooling assembly (3), and the side of the wind collecting cover (901) away from the air cooling assembly (3) is arc-shaped, and the bottom end of the wind collecting cover (901) is provided with a first air pipe (902). The base (4) is provided with a ventilation channel (903), the first air pipe (902) is communicated with the ventilation channel (903), and the side of the isolation box (8) close to the base (4) is provided with a second air pipe (904), and the second air pipe (904) is communicated with the ventilation channel (903).

2. A power capacitor as claimed in claim 1, characterized in that The motor (301) is fixedly arranged on the side end of the power capacitor body (1), the outer end of the motor (301) is provided with a protective cover (304), one end of the protective cover (304) close to the heat sink (2) is closed, the output end of the motor (301) passes through the protective cover (304) through a bearing, the output end of the motor (301) is fixedly provided with a rotating disc (302), and the outer end of the rotating disc (302) is fixedly provided with a fan blade (303).

3. A power capacitor as claimed in claim 1, wherein The liquid storage tank (501) is fixedly arranged at the top end of the base (4), the liquid pump (503) is fixedly arranged at one side of the liquid storage tank (501) close to the cooling fin (2), the liquid outlet pipe (502) is in communication with the input end of the channel (10) of the cooling fin (2), the top end of the liquid storage tank (501) is provided with a recovery pipe (504), the recovery pipe (504) is in communication with the output end of the channel (10) of the cooling fin (2), and the liquid storage tank (501) stores the non-conductive fluorinated liquid.

4. A power capacitor as claimed in claim 1, wherein The glass ball (602) is fixedly arranged at the inner top end of the spray pipe (601), the lower end of the glass ball (602) is spaced apart from the spray pipe (601), the breaking assembly (7) comprises a moving rod (701), and the moving rod (701) is arranged at the bottom end of the spray pipe (601) and can move up and down.

5. A power capacitor as claimed in claim 4, wherein The bottom end of the moving rod (701) is fixedly provided with a limiting plate (702), the limiting plate (702) is connected with the spray pipe (601) through a pressure spring (703), the pressure spring (703) is located at the outer end of the moving rod (701), the top end of the moving rod (701) is provided with a ferromagnet (704), the ferromagnet (704) is located between the glass ball (602) and the spray pipe (601), and the top end of the spray pipe (601) is externally provided with an electromagnet (705).

6. A power capacitor as claimed in claim 1, wherein The cooling fin (2) is provided with a plurality of cooling holes, the channel (10) on the cooling fin (2) is in an "S" shape, the channel (10) on the cooling fin (2) avoids the cooling holes, and the spray assembly (6) is aligned with the air cooling assembly (3).

7. A power capacitor as claimed in claim 1, wherein The air cooling assemblies (3) on both sides of the power capacitor body (1) are arranged in three groups, the spray assemblies (6) on the cooling fin (2) are arranged in three groups, and each group of the air cooling assemblies (3) corresponds to a group of the spray assemblies (6).

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