Capacitance compensation power distribution cabinet

Abstract

The invention relates to the technical field of power distribution cabinets, in particular to a capacitance compensation power distribution cabinet which comprises a power distribution cabinet body, a cabinet door capable of being opened and closed is arranged on one side of the power distribution cabinet body, a radiator for ventilating the interior of the power distribution cabinet body is arranged at the top of the power distribution cabinet body, and a plurality of air inlet grooves are formed in the lower half section of the power distribution cabinet body. An air inlet groove is formed in the power distribution cabinet body, a plurality of dustproof plates are fixed to the outer wall of the power distribution cabinet body and arranged on the side face of the air inlet groove, a defrosting device for wiping frost is arranged at the top of the power distribution cabinet body, and a heat dissipation device for cooling the interior of the power distribution cabinet body is arranged in the power distribution cabinet body. Through cooperation of the motor, the first rotating rod, the first belt pulley, a belt, a balancing weight and other structures, the inclined surface of the frost scraping plate cleans and scrapes frost on the outer wall of the power distribution cabinet body, the situation that the power distribution cabinet body is frosted, the temperature of a cabinet plate of the power distribution cabinet body is locally too high or too low, and consequently the cabinet plate is warped is prevented, and the service life of the device is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution cabinets, and in particular to a capacitor compensation power distribution cabinet. Background Art

[0002] Most of the load types in the power system are inductive loads. In addition, power users generally use power electronic equipment widely, which makes the power factor of the power grid low. The low power factor reduces the equipment utilization, increases the power supply investment, damages the voltage quality, reduces the service life of the equipment, and greatly increases the line loss. Therefore, by connecting the capacitor compensation cabinet to the power system, the inductive load can be balanced and the power factor can be improved to improve the utilization of the equipment. For this reason, it is necessary to place the capacitor compensation device through the distribution cabinet when using it. For this purpose, a capacitor compensation power distribution cabinet has been developed.

[0003] Although the existing capacitor-compensated power distribution cabinet can volatilize the moisture in the air inside the distribution cabinet through the heating resistor, when used in the northern winter, the heating resistor and the electrical components in the distribution cabinet work simultaneously, which will cause the local temperature of the distribution cabinet to rise, thereby causing frost in the lower temperature areas of the distribution cabinet, resulting in a large temperature difference in the cabinet panel, causing the cabinet panel to bend, affecting the normal use of the distribution cabinet. Therefore, we propose a capacitor-compensated power distribution cabinet. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a capacitor-compensated power distribution cabinet.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A capacitor compensation power distribution cabinet, comprising: A power distribution cabinet body, one side of which is provided with an openable cabinet door, and a radiator for ventilating the inside of the power distribution cabinet body is provided on the top of the power distribution cabinet body, a plurality of air inlet slots are provided on the lower half of the power distribution cabinet body, and a plurality of dustproof plates are fixed on the outer wall of the power distribution cabinet body, the dustproof plates are provided on the sides of the air inlet slots, and the dust entering the inside of the power distribution cabinet body is shielded by the dustproof plates, and a plurality of wire boxes are also provided inside the power distribution cabinet body, and the wire boxes inside the power distribution cabinet body can not only store the wiring harness, but also facilitate the installation of electrical components, thereby improving the appearance, and the radiator is a non-powered ventilator, which can not only quickly discharge the air inside the power distribution cabinet body, but also save energy; A defrosting device for wiping off frost is provided on the top of the power distribution cabinet body, and a heat dissipation device for cooling the interior of the power distribution cabinet body is provided inside the power distribution cabinet body; The defrosting device comprises a motor fixed on the power distribution cabinet body, a first rotating rod is fixed on the output end of the motor, two first pulleys are symmetrically fixed on the outer wall of the first rotating rod, two belts adapted thereto are arranged on the two first pulleys, a counterweight is fixed on one end of the two belts, a fixed column is fixed on one side of the counterweight, a scraper fixing frame is fixed on the end of the fixed column away from the counterweight, two frost scraping plates are symmetrically fixed on both ends of the scraper fixing frame, the inner wall of the frost scraping plate contacts the outer wall of the power distribution cabinet body, a transmission mechanism is also arranged between the first rotating rod and the power distribution cabinet body, one end of the two belts away from the fixed column passes through the top of the power distribution cabinet body and is connected to the heat dissipation device, an inclined surface is arranged on one end of the counterweight, frost on the outer wall of the power distribution cabinet body is scraped off by the inclined surface, the first rotating rod is driven to rotate by the output shaft of the motor, so that the first rotating rod drives the belt to move, so that the belt drives the fixed column to move through the counterweight, so that the fixed column drives the two frost scraping plates to move up and down through the scraper fixing frame, so that the frost scraping plates clean the frost on the outer wall of the power distribution cabinet body; The transmission mechanism includes a bracket fixed on the distribution cabinet body, an extension rod is fixed on the top of the bracket, and two rings are symmetrically fixed at both ends of the extension rod, a rotatable second rotating rod is provided in the middle of one of the rings, and the other ring is sleeved on the middle of the outer wall of the first rotating rod, and two second pulleys are symmetrically fixed at both ends of the second rotating rod, and the two belts are connected to the counterweight block after passing through the two second pulleys, and a rectangular groove adapted to the extension rod is provided on the top of the bracket, the middle part of the extension rod is fixed in the rectangular groove, and the two ends of the extension rod are extended to the outside of the rectangular groove and then fixed to the outer walls of the two rings, the belt first passes through the first pulley and then passes through the second pulley and is fixed to the top of the counterweight block, and the belt is supported by the first pulley and the second pulley to make the belt U-shaped, thereby ensuring that the counterweight block moves vertically up and down, and preventing the counterweight block from swinging laterally during lifting and lowering, causing damage to the outside of the distribution cabinet body.

[0006] As a preferred technical solution of the present invention, a ventilation slot is provided on the side of the distribution cabinet body away from the distribution cabinet body, a filter is arranged inside the ventilation slot, a cleaning block adapted to the ventilation slot is arranged in the middle of the frost scraper plate, the cleaning block is inserted in the ventilation slot, and one end of the cleaning block away from the frost scraper plate is in contact with the filter, the frost scraper plate drives the cleaning block to move up and down, so that the cleaning block cleans the filter to prevent the filter from being blocked by dust after long-term use and affecting the ventilation volume, and at the same time, when the cleaning frame moves in the ventilation slot, the cleaning block limits the frost scraper plate to prevent the frost scraper plate from shifting when moving, thereby greatly increasing the defrosting effect, and can also prevent the counterweight block from moving back and forth during lifting and lowering, so that the cleaning block damages the filter, and at the same time, it can ensure that the cleaning block maintains a uniform pressure when cleaning the filter, so that the cleaning block cleans more thoroughly.

[0007] As a preferred technical solution of the present invention, the heat dissipation device includes a shell fixed to the end of the two belts away from the counterweight block, two rotatable heat dissipation fans are arranged above the shell, two transmission rods are fixed between the two heat dissipation fans and the shell, the two transmission rods pass through the shell and enter the interior of the distribution cabinet body, a transmission mechanism is arranged inside the shell, a socket matched with the two transmission rods is opened on the top of the shell, the transmission rod is inserted into the interior of the distribution cabinet body through the socket, a sleeve matched with the transmission rod is arranged at the bottom of the inner wall of the shell, and the bottom of the transmission rod is inserted in the sleeve.

[0008] As a preferred technical solution of the present invention, the transmission mechanism includes a pressure rod fixed inside the outer shell, a rotatable power rod is arranged in the middle of the pressure rod, and two sections of spiral teeth are symmetrically opened on the outer wall of the power rod. Two worm gears meshing with the spiral teeth are fixed on the lower halves of the two transmission rods. The spiral teeth are driven to rotate by the power rod, and the spiral teeth drive the worm gear meshing with them to rotate, so that the worm gear drives the two cooling fans to rotate through the two transmission rods.

[0009] As a preferred technical solution of the present invention, two gears are symmetrically fixed on both sides of the power rod, and the inner wall of the distribution cabinet body is provided with two racks adapted to the two gears. One side of the outer shell is provided with two through grooves adapted to the two gears. The two gears pass through the two through grooves and mesh with the racks, and the gears are driven upward by the outer shell, and the gears and racks cooperate to drive the power rod to rotate. Therefore, through the cooperation of the gears and racks, not only can the outer shell be raised and lowered at a uniform speed, but also the hot air inside the distribution cabinet body can be blown to increase the flow rate of the air inside the distribution cabinet body.

[0010] As a preferred technical solution of the present invention, two through holes are opened on the top of the distribution cabinet body, and two protective covers are fixed inside the through holes. Two belts pass through the two protective covers and enter the interior of the distribution cabinet body. The belts are protected by the two protective covers, thereby reducing the wear between the belts and the distribution cabinet body and increasing the service life of the belts.

[0011] As a preferred technical solution of the present invention, the inclination directions of the blades on the two cooling fans are oppositely arranged, and the two worm gears are driven to rotate in opposite directions by two symmetrically arranged spiral teeth, so that when the outer shell drives the cooling fan to move downward, the cooling fan drives the air inside the distribution cabinet body to blow upward, thereby accelerating the discharge speed of the heat from the distribution cabinet body.

[0012] As a preferred technical solution of the present invention, an observation window is provided at one end of the shell away from the through slot, and the observation window is made of transparent material. The interior of the shell can be observed through the observation window to facilitate subsequent maintenance by staff.

[0013] Compared with the prior art, the present invention can achieve the following beneficial effects: The output shaft of the motor drives the first rotating rod to rotate, and the first rotating rod drives the two first pulleys to rotate, so that the first pulley drives the belt to move, and the belt drives the counterweight to rise and fall, so that the counterweight drives the scraper fixing frame to rise and fall through the fixed column, and the scraper fixing frame drives the two frost scraping plates to rise and fall, so that the inclined surface of the frost scraping plate cleans and scrapes the frost on the outer wall of the distribution cabinet body, thereby preventing frost on the distribution cabinet body, and causing the cabinet panel temperature of the distribution cabinet body to be locally too high or too low, causing the cabinet panel to warp, thereby increasing the service life of the device.

[0014] The outer shell is raised and lowered by a belt, and the outer shell drives the gear to be raised and lowered, and the gear cooperates with the rack to drive the gear to rotate, and the gear drives the power rod to rotate, and the power rod drives the helical teeth to rotate, and the helical teeth drive the worm gear meshing with it to rotate, and the worm gear drives the transmission rod to rotate, and the transmission rod drives the cooling fan to rotate, and the rotating cooling fan promotes the air circulation inside the distribution cabinet body, thereby controlling the temperature inside the distribution cabinet body while defrosting, so that the inside of the distribution cabinet body is kept at a constant temperature to prevent secondary frost.

[0015] By rotating the two cooling fans in opposite directions, the cooling fans push the air flow to generate counter-flows, thereby increasing the air flow speed, and then quickly cooling the inside of the distribution cabinet body, preventing the high temperature in summer from affecting the normal use of the electrical components inside the distribution cabinet body.

[0016] The cleaning block is driven to rise and fall by the scraper fixing frame, so that the cleaning block moves along the inside of the ventilation slot to clean the filter inside the ventilation slot, thereby preventing dust from accumulating in the mesh holes of the filter for a long time and affecting the flow rate of air inside the distribution cabinet body, further shortening the time for cooling the distribution cabinet body and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is one of the structural schematic diagrams of the present invention; Figure 2 This is the second structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the defrosting device of the present invention; Figure 4 It is a structural schematic diagram of the frost scraper of the present invention; Figure 5 It is a schematic structural diagram of the heat dissipation device of the present invention; Figure 6 It is a structural schematic diagram of the gear of the present invention; Figure 7 It is a structural schematic diagram of the counterweight block of the present invention; Figure 8 It is a structural schematic diagram of the scraper fixing frame of the present invention; Fig. 9 For the present invention Figure 7 Schematic diagram of the local enlarged structure at point A in the middle.

[0018] Among them: 1. distribution cabinet body; 2. cabinet door; 3. radiator; 4. defrosting device; 5. heat dissipation device; 401. motor; 402. first rotating rod; 403. second rotating rod; 404. first pulley; 405. second pulley; 406. belt; 407. counterweight; 408. fixed column; 409. scraper fixing frame; 410. frost scraper; 411. cleaning block; 412. bracket; 413. extension rod; 414. collar; 501. housing; 502. pressure rod; 503. worm gear; 504. spiral gear; 505. power rod; 506. gear; 507. rack; 508. cooling fan. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0020] Embodiment: The present invention provides as Figure 1 A capacitor compensation power distribution cabinet is shown, comprising: A distribution cabinet body 1 is provided with an openable cabinet door 2 on one side of the distribution cabinet body 1, and a radiator 3 for ventilating the inside of the distribution cabinet body 1 is provided on the top of the distribution cabinet body 1, a plurality of air inlet slots are provided on the lower half of the distribution cabinet body 1, and a plurality of dustproof plates are fixed on the outer wall of the distribution cabinet body 1, and the dustproof plates are provided on the sides of the air inlet slots, and the dust entering the inside of the distribution cabinet body 1 is blocked by the dustproof plates, and a plurality of wire boxes are also provided inside the distribution cabinet body 1, and the wire boxes inside the distribution cabinet body 1 can not only store the wiring harness, but also facilitate the installation of electrical components to improve the appearance, and the radiator 3 is a non-powered ventilator, which can not only quickly discharge the air inside the distribution cabinet body 1, but also save energy.

[0021] As can be seen from the above, when in use, the electrical components to be installed are installed on the wire box of the distribution cabinet body 1, and the temperature inside the distribution cabinet body 1 is increased by the heating resistor, thereby increasing the overall temperature of the distribution cabinet body 1.

[0022] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 and Fig. 9 As shown, a defrosting device 4 for wiping off frost is provided on the top of the power distribution cabinet body 1, and a heat dissipation device 5 for cooling the inside of the power distribution cabinet body 1 is provided inside the power distribution cabinet body 1; The defrosting device 4 includes a motor 401 fixed to the power distribution cabinet body 1, a first rotating rod 402 is fixed to the output end of the motor 401, two first pulleys 404 are symmetrically fixed to the outer wall of the first rotating rod 402, two belts 406 adapted thereto are arranged on the two first pulleys 404, a counterweight 407 is fixed to one end of the two belts 406, a fixing column 408 is fixed to one side of the counterweight 407, a scraper fixing frame 409 is fixed to the end of the fixing column 408 away from the counterweight 407, two frost scraping plates 410 are symmetrically fixed to the two ends of the scraper fixing frame 409, the inner wall of the frost scraping plate 410 is in contact with the outer wall of the power distribution cabinet body 1, and the first rotating rod A transmission mechanism is also provided between 402 and the distribution cabinet body 1. One end of the two belts 406 away from the fixed column 408 passes through the top of the distribution cabinet body 1 and is connected to the heat dissipation device 5. One end of the counterweight block 407 is provided with an inclined surface, and the frost on the outer wall of the distribution cabinet body 1 is scraped off by the inclined surface. The output shaft of the motor 401 drives the first rotating rod 402 to rotate, so that the first rotating rod 402 drives the belt 406 to move, so that the belt 406 drives the fixed column 408 to move through the counterweight block 407, so that the fixed column 408 drives the two frost scraping plates 410 to move up and down through the scraper fixing frame 409, so that the frost scraping plates 410 clean the frost on the outer wall of the distribution cabinet body 1; The transmission mechanism includes a bracket 412 fixed on the power distribution cabinet body 1, an extension rod 413 is fixed on the top of the bracket 412, two rings 414 are symmetrically fixed at both ends of the extension rod 413, a rotatable second rotating rod 403 is arranged in the middle of one of the rings 414, and the other ring 414 is sleeved on the middle of the outer wall of the first rotating rod 402, two second pulleys 405 are symmetrically fixed at both ends of the second rotating rod 403, and two belts 406 are connected to the counterweight block 407 after passing through the two second pulleys 405. The top of the bracket 412 is provided with a ring 414 that is symmetrically fixed to the extension rod 413. 3-phase matching rectangular grooves, the middle part of the extension rod 413 is fixed in the rectangular groove, the two ends of the extension rod 413 extend to the outside of the rectangular groove and are fixed to the outer walls of the two rings 414, the belt 406 first passes through the first pulley 404 and then passes around the second pulley 405 and is fixed to the top of the counterweight block 407, the belt 406 is supported by the first pulley 404 and the second pulley 405, so that the belt is U-shaped, thereby ensuring that the counterweight block 407 can move vertically up and down, preventing the counterweight block 407 from swinging horizontally during lifting and lowering, and causing damage to the outside of the distribution cabinet body 1.

[0023] Two through holes are opened on the top of the distribution cabinet body 1, and two protective covers are fixed inside the through holes. The two belts 406 pass through the two protective covers and enter the interior of the distribution cabinet body 1. The two protective covers protect the belts 406, reduce the wear between the belts 406 and the distribution cabinet body 1, and increase the service life of the belts 406.

[0024] By adopting the above technical solution: During use, when it is necessary to defrost the outer wall of the distribution cabinet body 1, the first rotating rod 402 is driven to rotate through the output shaft of the motor 401, and the first rotating rod 402 drives the two first pulleys 404 to rotate, so that the first pulley 404 drives the belt 406 to move, and the belt 406 drives the counterweight block 407 to rise and fall, and the counterweight block 407 drives the scraper fixing frame 409 to rise and fall through the fixed column 408, and the scraper fixing frame 409 drives the two frost scraping plates 410 to rise and fall, so that the inclined surface of the frost scraping plate 410 cleans and scrapes the frost on the outer wall of the distribution cabinet body 1, thereby preventing frost on the distribution cabinet body 1, and making the cabinet panel temperature of the distribution cabinet body 1 locally too high or too low to cause the cabinet panel to warp, thereby improving the service life of the device.

[0025] Secondly, refer to Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the heat dissipation device 5 includes a shell 501 fixed to the end of the two belts 406 away from the counterweight block 407, and two rotatable heat dissipation fans 508 are arranged above the shell 501. Two transmission rods are fixed between the two heat dissipation fans 508 and the shell 501. The two transmission rods pass through the shell 501 and enter the interior of the distribution cabinet body 1. A transmission mechanism is arranged inside the shell 501. A socket matched with the two transmission rods is opened on the top of the shell 501. The transmission rod is inserted into the interior of the distribution cabinet body 1 through the socket. A sleeve matched with the transmission rod is arranged at the bottom of the inner wall of the shell 501, and the bottom of the transmission rod is inserted in the sleeve.

[0026] The transmission mechanism includes a pressure rod 502 fixed inside the outer shell 501, a rotatable power rod 505 is arranged in the middle of the pressure rod 502, and two sections of spiral teeth 504 are symmetrically opened on the outer wall of the power rod 505. Two worm wheels 503 meshing with the spiral teeth 504 are fixed to the lower halves of the two transmission rods. The spiral teeth 504 are driven to rotate by the power rod 505, so that the spiral teeth 504 drive the worm wheel 503 meshing with them to rotate, and the worm wheel 503 drives the two cooling fans 508 to rotate through the two transmission rods.

[0027] Two gears 506 are symmetrically fixed on both sides of the power rod 505, and the inner wall of the distribution cabinet body 1 is provided with two racks 507 adapted to the two gears 506. One side of the outer shell 501 is provided with two through grooves adapted to the two gears 506. The two gears 506 pass through the two through grooves and mesh with the racks 507, and the gears 506 are driven to move upward through the outer shell 501. The gears 506 cooperate with the racks 507 to drive the power rod 505 to rotate, so that through the cooperation of the gears 506 and the racks 507, not only can the outer shell 501 be raised and lowered at a uniform speed, but also the hot air inside the distribution cabinet body 1 can be blown to increase the flow rate of the air inside the distribution cabinet body 1.

[0028] An observation window is provided at one end of the shell 501 away from the through slot. The observation window is made of a transparent material. The interior of the shell can be observed through the observation window, which is convenient for subsequent maintenance by staff.

[0029] By adopting the above technical solution: During use, when the counterweight 407 is raised or lowered, the counterweight 407 drives the outer shell 501 to be raised or lowered through the belt 406, so that the outer shell 501 drives the gear 506 to be raised or lowered, so that the gear 506 cooperates with the rack 507 to drive the gear 506 to rotate, so that the gear 506 drives the power rod 505 to rotate, and the power rod 505 drives the helical teeth 504 to rotate, so that the helical teeth 504 drive the worm gear 503 engaged therewith to rotate, so that the worm gear 503 drives the transmission rod to rotate, and the transmission rod drives the cooling fan 508 to rotate, so that the rotating cooling fan 508 promotes the air circulation inside the distribution cabinet body 1, thereby controlling the temperature inside the distribution cabinet body 1 while defrosting, so that the inside of the distribution cabinet body 1 is kept at a constant temperature to prevent secondary frost.

[0030] Again, reference Figure 5 and Figure 6 As shown, the inclination directions of the blades on the two cooling fans 508 are oppositely arranged, and the two worm gears 503 are driven to rotate in opposite directions by two symmetrically arranged spiral teeth 504. Therefore, when the outer shell 501 drives the cooling fan 508 to move downward, the cooling fan 508 drives the air inside the distribution cabinet body 1 to blow upward, thereby accelerating the discharge speed of the distribution cabinet body 1 for hot air.

[0031] By adopting the above technical solution: During use, when the shell 501 drives the two cooling fans 508 to rise and fall through the transmission rod, the two cooling fans 508 rotate in opposite directions, so that the cooling fans 508 push the air flow to generate opposite airflows, thereby increasing the air flow speed, and then quickly cooling the interior of the distribution cabinet body 1, preventing the high temperature in summer from affecting the normal use of the electrical components inside the distribution cabinet body 1.

[0032] Finally, reference Figure 2 and Figure 8 As shown, a ventilation slot is provided on one side of the power distribution cabinet body 1 away from the power distribution cabinet body 1, and a filter is arranged inside the ventilation slot. A cleaning block 411 adapted to the ventilation slot is arranged in the middle of the frost scraper plate 410, and the cleaning block 411 is inserted in the ventilation slot, and one end of the cleaning block 411 away from the frost scraper plate 410 contacts the filter. The frost scraper plate 410 drives the cleaning block 411 to move up and down, so that the cleaning block 411 cleans the filter to prevent the filter from being blocked by dust after long-term use and affecting the ventilation volume. At the same time, when the cleaning frame 411 moves in the ventilation slot, the cleaning block 411 limits the frost scraper plate 410 to prevent the frost scraper plate 410 from shifting when moving, which greatly increases the defrosting effect, and can also prevent the counterweight block 407 from moving back and forth during lifting, so that the cleaning block 411 damages the filter. At the same time, it can also ensure that the cleaning block 411 maintains a uniform pressure when cleaning the filter, so that the cleaning block 411 cleans more thoroughly.

[0033] By adopting the above technical solution: During use, when the scraper fixing frame 409 is raised or lowered, the scraper fixing frame 409 drives the cleaning block 411 to be raised or lowered, so that the cleaning block 411 moves along the inside of the ventilation slot to clean the filter inside the ventilation slot, thereby preventing dust from accumulating in the mesh of the filter for a long time and affecting the flow rate of air inside the distribution cabinet body 1, thereby further shortening the time for cooling the distribution cabinet body 1 and improving work efficiency.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A capacitor compensation power distribution cabinet, characterized in that: include: A power distribution cabinet body (1), wherein an openable cabinet door (2) is provided on one side of the power distribution cabinet body (1), and a radiator (3) for ventilating the interior of the power distribution cabinet body (1) is provided on the top of the power distribution cabinet body (1), a plurality of air inlet grooves are provided on the lower half of the power distribution cabinet body (1), and a plurality of dustproof plates are fixed on the outer wall of the power distribution cabinet body (1), and the dustproof plates are provided on the sides of the air inlet grooves; A defrosting device (4) for wiping off frost is provided on the top of the power distribution cabinet body (1), and a heat dissipation device (5) for cooling the interior of the power distribution cabinet body (1) is provided inside the power distribution cabinet body (1); The defrosting device (4) comprises a motor (401) fixed to a power distribution cabinet body (1); a first rotating rod (402) is fixed to an output end of the motor (401); two first belt pulleys (404) are symmetrically fixed to an outer wall of the first rotating rod (402); two belts (406) adapted thereto are arranged on the two first belt pulleys (404); a counterweight (407) is fixed to one end of the two belts (406); a fixing column (408) is fixed to one side of the counterweight (407); and the fixing column (408) is remote from the fixing column (408). A scraper fixing frame (409) is fixed to one end of the counterweight (407), two frost scraping plates (410) are symmetrically fixed to both ends of the scraper fixing frame (409), the inner wall of the frost scraping plate (410) is in contact with the outer wall of the power distribution cabinet body (1), a transmission mechanism is also provided between the first rotating rod (402) and the power distribution cabinet body (1), the ends of the two belts (406) away from the fixing column (408) pass through the top of the power distribution cabinet body (1) and are connected to the heat dissipation device (5), and an inclined surface is provided at one end of the counterweight (407); The transmission mechanism comprises a bracket (412) fixed on the power distribution cabinet body (1), an extension rod (413) being fixed on the top of the bracket (412), two sleeves (414) being symmetrically fixed at both ends of the extension rod (413), a rotatable second rotating rod (403) being arranged in the middle of one sleeve (414), and the other sleeve (414) being sleeved on the middle of the outer wall of the first rotating rod (402), two second belt pulleys (405) being symmetrically fixed at both ends of the second rotating rod (403), two belts (406) being connected to a counterweight block (407) after passing through the two second belt pulleys (405), and a rectangular groove matching the extension rod (413) being arranged on the top of the bracket (412), and the middle of the extension rod (413) being fixed in the rectangular groove.

2. A capacitor-compensated power distribution cabinet according to claim 1, characterized in that: A ventilation slot is provided on a side of the power distribution cabinet body (1) away from the power distribution cabinet body (1), a filter screen is provided inside the ventilation slot, a cleaning block (411) adapted to the ventilation slot is provided in the middle of the frost scraper plate (410), the cleaning block (411) is inserted into the ventilation slot, and an end of the cleaning block (411) away from the frost scraper plate (410) contacts the filter screen.

3. A capacitor compensation power distribution cabinet according to claim 1, characterized in that: The heat dissipation device (5) comprises a housing (501) fixed to one end of the two belts (406) away from the counterweight (407); two rotatable heat dissipation fans (508) are arranged above the housing (501); two transmission rods are fixed between the two heat dissipation fans (508) and the housing (501); the two transmission rods pass through the housing (501) and enter the interior of the power distribution cabinet body (1); and a transmission mechanism is arranged inside the housing (501).

4. A capacitor-compensated power distribution cabinet according to claim 3, characterized in that: The transmission mechanism comprises a pressure rod (502) fixed inside the housing (501), a rotatable power rod (505) is arranged in the middle of the pressure rod (502), two sections of spiral teeth (504) are symmetrically formed on the outer wall of the power rod (505), and two worm gears (503) meshing with the spiral teeth are fixed to the lower halves of the two transmission rods.

5. A capacitor-compensated power distribution cabinet according to claim 4, characterized in that: Two gears (506) are symmetrically fixed on both sides of the power rod (505); two racks (507) adapted to the two gears (506) are provided on the inner wall of the power distribution cabinet body (1); two through slots adapted to the two gears (506) are provided on one side of the housing (501); the two gears (506) mesh with the racks (507) after passing through the two through slots.

6. A capacitor compensation power distribution cabinet according to claim 3, characterized in that: Two through holes are provided on the top of the power distribution cabinet body (1), two protective covers are fixed inside the through holes, and two belts (406) pass through the two protective covers and enter the inside of the power distribution cabinet body (1).

7. A capacitor-compensated power distribution cabinet according to claim 3, characterized in that: The inclination directions of the fan blades on the two heat dissipation fans (508) are arranged in opposite directions.

8. A capacitor-compensated power distribution cabinet according to claim 5, characterized in that: An observation window is provided at one end of the housing (501) away from the through slot.

Images