Low-voltage reactive power compensation device

Abstract

The utility model provides a low-voltage reactive power compensation device. The low-voltage reactive power compensation device comprises a cabinet body, a main switch, a controller and a plurality of capacitors are arranged in the cabinet body, alternating current contactors and miniature circuit breakers which are in one-to-one correspondence with the plurality of capacitors are further arranged in the cabinet body, wiring ends are arranged at the top ends of the capacitors, and the main switch is connected with the controller. The wiring end is sequentially connected with an alternating current contactor and a miniature circuit breaker through a wire, the air inlet hole is used for air inlet cooling, and the air inlet hole is formed in one side of the cabinet body; the fan is used for exhausting and heat dissipation, the fan is arranged in the cabinet body, the air outlet end of the fan is fixedly provided with an air outlet pipe, and the air outlet end of the air outlet pipe extends out of the cabinet body. The low-voltage reactive power compensation device provided by the utility model has a conventional reactive power compensation function, can accelerate internal air circulation, is favorable for improving the heat dissipation effect, avoids the problem of heat accumulation, and is favorable for prolonging the service life.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a low-voltage reactive power compensation device. Background Art

[0002] With the continuous development of the power system, the requirements for reactive power compensation devices are getting higher and higher. Traditional low-voltage reactive power compensation devices usually use fixed capacitors for reactive power compensation, which cannot be dynamically adjusted according to the real-time needs of the system, resulting in unsatisfactory compensation effects. Therefore, low-voltage reactive power compensation devices have been developed that can be dynamically adjusted according to the real-time needs of the system to improve the compensation effect.

[0003] At present, the existing low-voltage reactive power compensation device is prone to generate a lot of heat during long-term use due to the alternating effect of current and voltage. Due to the dense layout of the internal components of the device and the possible limitations of the working environment, the heat dissipation effect is poor; this high-temperature working environment will accelerate the aging process of the internal components of the device, thereby affecting the stability and service life of the device; traditional low-voltage reactive power compensation devices mainly use natural heat dissipation, which has low heat dissipation efficiency and cannot meet the needs of rapid heat dissipation, thereby further reducing the stability and service life of the device.

[0004] Therefore, it is necessary to provide a new low-voltage reactive power compensation device to solve the above technical problems. Utility Model Content

[0005] The utility model provides a low-voltage reactive power compensation device, which aims to solve the technical problem in the prior art proposed in the above background technology that heat generation during long-term use of the low-voltage reactive power compensation device causes component aging, affecting the stability and service life of the device.

[0006] The utility model provides a low-voltage reactive power compensation device comprising: a cabinet, wherein a main switch, a controller and a plurality of capacitors are arranged inside the cabinet, wherein AC contactors and miniature circuit breakers corresponding to the plurality of capacitors are also arranged inside the cabinet, wherein a wiring terminal is arranged at the top of the capacitor, wherein the wiring terminal is sequentially connected to the AC contactor and the miniature circuit breaker through a wire, and further comprising: an air inlet for air intake cooling, wherein the air inlet starts at one side of the cabinet; a fan for exhaust heat dissipation, wherein the fan is arranged in the cabinet, an air outlet pipe is fixedly installed at the air outlet end of the fan, and the air outlet end of the air outlet pipe extends out of the cabinet; and a dust-proof filtering mechanism for covering the air inlet to filter dust, wherein the dust-proof filtering mechanism is arranged on the cabinet.

[0007] Preferably, the dust-proof filtering mechanism includes a mounting shell, a dust filter plate, a mounting frame, a pin rod, a spring and a pull ring, the mounting shell is fixedly mounted on one side of the cabinet, the dust filter plate is slidably mounted in the mounting shell, the mounting frame is fixedly mounted on one side of the mounting shell, the pin rod is slidably mounted on the mounting frame, the spring is sleeved on the pin rod, and the pull ring is fixedly mounted on one end of the pin rod.

[0008] Preferably, both sides of the cabinet are fixedly connected with wire tubes for inserting and exiting cables, and both wire tubes are provided with screwable bolts, and elastic sealing blocks for sealing the wire tubes are fixedly installed on the ends of the corresponding bolts close to each other.

[0009] Preferably, a hinge is fixedly mounted on one side of the cabinet body, a cabinet door is fixedly mounted on the hinge, and a transparent observation window and a screw handle lock are provided on the cabinet door.

[0010] Preferably, a bearing plate is fixedly installed in the cabinet, and a plurality of placement seats for placing the capacitors are fixedly installed on the top of the bearing plate. The placement seats are made of heat-dissipating aluminum material, and insulating thermal conductive silicone pads are arranged in the placement seats.

[0011] Preferably, an exhaust pipe is fixedly mounted on the air inlet end of the fan, and the air inlet end of the exhaust pipe extends to above the supporting plate.

[0012] Preferably, a limit plate is fixedly mounted on the bottom of the dust filter plate, a handle is fixedly mounted on the bottom of the limit plate, and a limit groove matched with the pin rod is opened on one side of the limit plate.

[0013] Compared with the related art, the low-voltage reactive power compensation device provided by the utility model has the following beneficial effects:

[0014] The utility model provides a low-voltage reactive power compensation device:

[0015] 1. By setting an air inlet on one side of the cabinet, and setting a fan and an air outlet pipe in the cabinet, the functions of air intake cooling and exhaust heat dissipation are realized, which is conducive to improving the heat dissipation efficiency, avoiding high temperature inside the cabinet, and improving the stability and service life of the device. The dust-proof filtering mechanism can effectively prevent dust from entering the interior of the device and keep the interior of the device clean;

[0016] 2. By arranging wire tubes on both sides of the cabinet and arranging screwable bolts and elastic sealing blocks on the two wire tubes, the function of passing cables in and out is realized, and at the same time, the sealing is ensured to prevent the internal components of the cabinet from being corroded by dust. By arranging a bearing plate and a placement seat in the cabinet, the placement and heat dissipation functions of the capacitor are realized. This design enables the capacitor to dissipate heat better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the main structure of a preferred embodiment of the low-voltage reactive power compensation device provided by the utility model;

[0018] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0019] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in FIG.

[0020] Figure 4 It is a structural schematic diagram of the pin rod in the utility model.

[0021] Numbers in the figure: 1. Cabinet; 2. Main switch; 3. Capacitor; 4. AC contactor; 5. Miniature circuit breaker; 6. Controller; 7. Air inlet; 8. Fan; 9. Air outlet duct; 10. Mounting shell; 11. Dust filter plate; 12. Mounting frame; 13. Pin rod; 14. Spring; 15. Pull ring; 16. Wire tube; 17. Bolt; 18. Elastic sealing block. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0023] Please refer to Figure 1-Figure 4 ,in, Figure 1 A schematic diagram of the main structure of a preferred embodiment of the low-voltage reactive power compensation device provided by the utility model; Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model; Figure 3 for Figure 2 An enlarged structural diagram of part A shown in FIG. Figure 4 It is a structural schematic diagram of the pin rod in the utility model.

[0024] The low-voltage reactive power compensation device comprises: a cabinet 1, wherein a main switch 2, a controller 6 and a plurality of capacitors 3 are arranged inside the cabinet 1, and an AC contactor 4 and a miniature circuit breaker 5 corresponding to the plurality of capacitors 3 are also arranged inside the cabinet 1, and a terminal is arranged at the top of the capacitor 3, and the terminal is sequentially connected to the AC contactor 4 and the miniature circuit breaker 5 through a wire, and further comprises: an air inlet 7 for air intake cooling, wherein the air inlet 7 starts at one side of the cabinet 1; a fan 8 for exhaust heat dissipation, wherein the fan 8 is arranged in the cabinet 1, and an air outlet pipe 9 is fixedly installed at the air outlet end of the fan 8, and the air outlet end of the air outlet pipe 9 extends out of the cabinet 1; a dustproof filtering mechanism for covering the air inlet 7 to filter dust, wherein the dustproof filtering mechanism is arranged on the cabinet 1, and by arranging the air inlet 7 on one side of the cabinet 1, and arranging the fan 8 and the air outlet pipe 9 in the cabinet 1, the functions of air intake cooling and exhaust heat dissipation are realized, which is conducive to improving the heat dissipation efficiency, avoiding high temperature inside the cabinet 1, and improving the stability and service life of the device.

[0025] The dust-proof filtering mechanism includes a mounting shell 10, a dust filter plate 11, a mounting frame 12, a pin rod 13, a spring 14 and a pull ring 15. The mounting shell 10 is fixedly mounted on one side of the cabinet 1, the dust filter plate 11 is slidably mounted in the mounting shell 10, the mounting frame 12 is fixedly mounted on one side of the mounting shell 10, the pin rod 13 is slidably mounted on the mounting frame 12, the spring 14 is sleeved on the pin rod 13, and the pull ring 15 is fixedly mounted on one end of the pin rod 13. By setting up the dust-proof filtering mechanism, dust can be effectively prevented from entering the interior of the device and the interior of the device can be kept clean.

[0026] The two sides of the cabinet 1 are respectively fixedly connected with wire tubes 16 for inserting and passing cables in and out. The two wire tubes 16 are each provided with a screwable bolt 17, and the corresponding ends of the bolts 17 close to each other are fixedly installed with elastic sealing blocks 18 for sealing the wire tubes 16. By arranging wire tubes 16 on both sides of the cabinet 1 and arranging screwable bolts 17 and elastic sealing blocks 18 on the two wire tubes 16, the function of inserting and passing cables in and out is realized, and at the same time, the sealing is ensured to prevent the internal components of the cabinet 1 from being corroded by dust.

[0027] A hinge is fixedly installed on one side of the cabinet body 1, a cabinet door is fixedly installed on the hinge, and a transparent observation window and a screw handle lock are arranged on the cabinet door.

[0028] A carrying plate is fixedly installed in the cabinet 1, and a plurality of placement seats for placing the capacitors 3 are fixedly installed on the top of the carrying plate. The placement seats are made of heat-dissipating aluminum material, and insulating thermal conductive silicone pads are arranged in the placement seats. By arranging the carrying plate and the placement seats in the cabinet 1, the functions of placing and dissipating heat of the capacitors 3 are achieved. This design enables the capacitors 3 to dissipate heat better.

[0029] An exhaust pipe is fixedly mounted on the air inlet end of the fan 8, and the air inlet end of the exhaust pipe extends to the top of the supporting plate.

[0030] A limiting plate is fixedly mounted on the bottom of the dust filter plate 11 , a handle is fixedly mounted on the bottom of the limiting plate, and a limiting groove matched with the pin rod 13 is opened on one side of the limiting plate.

[0031] It is worth noting that the circuits, electronic components and modules involved in the present utility model are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present utility model does not involve improvements to software and methods.

[0032] The working principle of the low-voltage reactive power compensation device provided by the utility model is as follows:

[0033] When in use, the low-voltage reactive power compensation device controls the on-off of the capacitor 3 through the main switch 2, and the controller 6 is used to control the on-off of the AC contactor 4 and the miniature circuit breaker 5 to realize the switching of the capacitor 3; the capacitor 3 will generate heat during the switching process. In order to reduce the temperature in the cabinet 1, the fan 8 can be started, and the external air enters the cabinet 1 through the air inlet 7. The air will first enter from the air inlet on the mounting shell 10, and the dust impurities will be filtered out by the dust filter plate 11. Then, the air in the cabinet 1 is discharged to the outside through the suction effect of the fan 8, so as to speed up the air circulation and improve the heat dissipation efficiency of the device.

[0034] In summary, the low-voltage reactive power compensation device provided by the present technical solution can quickly discharge the heat in the cabinet 1 by arranging the air outlet duct 9 and the fan 8, thereby improving the heat dissipation effect of the device and avoiding aging of components due to overheating. It can effectively solve the problem in the prior art that the low-voltage reactive power compensation device in the long-term use process may cause aging of components due to heat generation, affect the stability of the device and greatly reduce the service life.

[0035] Compared with the related art, the low-voltage reactive power compensation device provided by the utility model has the following beneficial effects:

[0036] The utility model provides a low-voltage reactive power compensation device. By arranging an air inlet 7 on one side of a cabinet 1, and arranging a fan 8 and an air outlet duct 9 in the cabinet 1, the functions of cooling the intake air and dissipating the exhaust air are realized, which is beneficial to improving the heat dissipation efficiency, avoiding high temperature inside the cabinet 1, and improving the stability and service life of the device. By arranging a dustproof filtering mechanism, dust can be effectively prevented from entering the interior of the device, and the interior of the device can be kept clean. By arranging wire tubes 16 on both sides of the cabinet 1, and arranging screwable bolts 17 and elastic sealing blocks 18 on the two wire tubes 16, the function of inserting and removing cables is realized, and at the same time, the sealing is guaranteed to prevent the internal components of the cabinet 1 from being corroded by dust. By arranging a bearing plate and a placement seat in the cabinet 1, the functions of placing and dissipating heat for the capacitor 3 are realized. This design enables the capacitor 3 to dissipate heat better.

[0037] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. However, on the premise that technical personnel in this field understand the principle of the above-mentioned utility model, they can clearly know the details of its power mechanism, power supply system and control system.

[0038] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A low-voltage reactive power compensation device, comprising a cabinet, wherein a main switch, a controller and a plurality of capacitors are arranged inside the cabinet, wherein an AC contactor and a miniature circuit breaker corresponding to the plurality of capacitors are also arranged inside the cabinet, wherein a connection terminal is arranged at the top of the capacitor, and the connection terminal is connected to the AC contactor and the miniature circuit breaker in sequence through a wire, It is characterized in that Also includes: An air intake hole for air intake cooling, the air intake hole starts at one side of the cabinet; A fan for exhausting and dissipating heat, the fan being arranged in the cabinet, an air outlet pipe being fixedly mounted on an air outlet end of the fan, and the air outlet end of the air outlet pipe extending out of the cabinet; A dust-proof filtering mechanism is used for covering the air inlet hole to filter dust, and the dust-proof filtering mechanism is arranged on the cabinet.

2. The low voltage reactive power compensation device according to claim 1, It is characterized in that The dust-proof filtering mechanism includes a mounting shell, a dust filter plate, a mounting frame, a pin rod, a spring and a pull ring. The mounting shell is fixedly mounted on one side of the cabinet, the dust filter plate is slidably mounted in the mounting shell, the mounting frame is fixedly mounted on one side of the mounting shell, the pin rod is slidably mounted on the mounting frame, the spring is sleeved on the pin rod, and the pull ring is fixedly mounted on one end of the pin rod.

3. The low voltage reactive power compensation device according to claim 1, It is characterized in that The two sides of the cabinet are respectively fixedly connected with wire tubes for passing cables in and out, and screwable bolts are arranged on the two wire tubes. Elastic sealing blocks for sealing the wire tubes are fixedly installed on the ends of the corresponding bolts close to each other.

4. The low voltage reactive power compensation device according to claim 1, It is characterized in that A hinge is fixedly installed on one side of the cabinet body, a cabinet door is fixedly installed on the hinge, and a transparent observation window and a screw handle lock are arranged on the cabinet door.

5. The low voltage reactive power compensation device according to claim 1, It is characterized in that A bearing plate is fixedly installed in the cabinet, and a plurality of placement seats for placing the capacitors are fixedly installed on the top of the bearing plate. The placement seats are made of heat-dissipating aluminum material, and insulating heat-conducting silicone pads are arranged in the placement seats.

6. The low voltage reactive power compensation device according to claim 5, It is characterized in that An air extraction pipe is fixedly mounted on the air inlet end of the fan, and the air inlet end of the air extraction pipe extends to the top of the supporting plate.

7. The low voltage reactive power compensation device according to claim 2, It is characterized in that A limiting plate is fixedly installed at the bottom of the dust filter plate, a handle is fixedly installed at the bottom of the limiting plate, and a limiting groove matched with the pin rod is opened on one side of the limiting plate.

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