Active power filter

Abstract

The utility model belongs to the technical field of power electronics, and particularly relates to an active power filter which comprises an active power filter body, the outer wall of the active power filter body is connected with a heat dissipation dustproof assembly, and a heat dissipation control assembly is installed in the active power filter body. The heat dissipation control assembly comprises a temperature sensor, a controller, a telescopic shell, a telescopic inner core, a power supply, a rotating piece, a control power supply and a heat dissipation fan, the side of the temperature sensor is electrically connected with the controller, the outer wall of the controller is electrically connected with the telescopic shell, and the telescopic inner core is slidably connected into the telescopic shell; according to the utility model, the temperature sensor can conveniently sense the temperature generated when the electrical elements work and control the work of the cooling fan, external dust and winged insects can be isolated, and cables of various electrical elements can be properly fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronics, in particular to an active power filter. Background Art

[0002] Active power filter is a new type of power electronic device used to dynamically suppress harmonics and compensate reactive power. It can compensate for harmonics with varying magnitudes and frequencies as well as varying reactive power. Active power filter is a new type of special equipment for power harmonic control made using modern power electronic technology and digital signal processing technology based on high-speed DSP devices.

[0003] In Chinese patent CN219841978U, the utility model relates to the field of engineering monitoring technology, and discloses an observation pier, including a cabinet, a cabinet door is installed on the surface of the cabinet, a hinge is arranged at the bottom of the cabinet door, a top plate is arranged inside the cabinet, a column is arranged at the bottom of the top plate, a bottom plate is arranged at the bottom of the column, a center hole is opened inside the groove, a center bolt is inserted inside the center hole, a threaded hole is opened inside the top plate, a second center bolt is inserted inside the center hole, a fixing screw is inserted inside the through hole, and a threaded groove is opened on the top of the column. The observation pier, through the connection and action of the cabinet, cabinet door, hinge, door lock, groove, top plate, column, bottom plate, center hole, center bolt, threaded hole, second center bolt, through hole, fixing screw and threaded groove, achieves the effect of multi-base setting to make GNSS and total station synchronous observation, and improve observation accuracy and timeliness.

[0004] The existing active power filter and wiring cabinet have problems due to the presence of a large number of electrical components inside the active power filter, which generates a large amount of heat when working, and excessively high temperature will affect its work. Although the heat dissipation gap and the heat dissipation fan can dissipate the heat, the opening of the heat dissipation gap on the outer wall of the active power filter will cause a large amount of dust or flying insects to enter the inside, which will also affect its normal work. At the same time, the heat dissipation fan may be in a working state all the time, which may cause a waste of resources and may require manual control by personnel, increasing the workload of personnel.

[0005] Therefore, an active power filter is proposed to address the above problems. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, the utility model solves the problem that due to the presence of a large number of electrical components inside the active power filter, a large amount of heat is generated when the active power filter is working, and excessively high temperature will affect its work. Although the heat dissipation gap and the heat dissipation fan can dissipate the heat, the opening of the heat dissipation gap on the outer wall of the active power filter will cause a large amount of dust or flying insects to enter the interior, which will also affect its normal work. At the same time, the heat dissipation fan may be in a working state all the time, which may cause a waste of resources and may require manual control by personnel, increasing the workload of personnel.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: an active power filter described in the utility model comprises an active power filter body, the outer wall of the active power filter body is connected with a heat dissipation and dustproof component, and a heat dissipation control component is installed inside the active power filter body; the heat dissipation control component comprises a temperature sensor, a controller, a telescopic shell, a telescopic inner core, a power supply, a rotating piece, a control power supply, and a heat dissipation fan, the side of the temperature sensor is electrically connected with the controller, and the outer wall of the controller is electrically connected with the telescopic shell, and the inside of the telescopic shell is slidably connected with the telescopic inner core, the side of the telescopic inner core is connected with the power supply, and the bottom of the power supply is rotatably connected with the rotating piece, the side of the rotating piece is connected with the control power supply, and the top of the control power supply is electrically connected with the heat dissipation fan.

[0008] Preferably, the telescopic inner core forms a sliding structure through the telescopic outer shell and the rotating piece, and the rotating piece forms a rotating structure through the power supply and the control power supply.

[0009] Preferably, the heat dissipation and dustproof assembly includes a dustproof net, a fixed seat, a first spring, an insertion rod, and a rotating seat. A fixed seat is provided on the side of the dustproof net, and the first spring is installed inside the fixed seat. In addition, the top of the first spring installed inside the fixed seat is fixedly connected to the insertion rod, and the outer wall of the dustproof net is fixedly connected to the rotating seat.

[0010] Preferably, the dustproof net forms a detachable structure with the active power filter body through the insertion rod, and the insertion rod forms an elastic structure with the fixing seat through the first spring, and the dustproof net forms a rotating structure with the active power filter body through the insertion rod, the rotating seat.

[0011] The utility model is beneficial in that:

[0012] 1. The utility model is provided with a heat dissipation control component, and the temperature condition inside the main body of the active power filter is sensed by the temperature sensor, and after being processed by the controller, when the temperature sensor senses that the temperature inside the main body of the active power filter rises to a certain level, it can be transmitted in the form of an electrical signal, thereby controlling the operation of the heat dissipation fan, thereby achieving the purpose of cooling the inside of the main body of the active power filter, without manual operation by personnel, and saving resources;

[0013] 2. The utility model is provided with a heat dissipation and dustproof component. When the active power filter body uses a heat dissipation fan to dissipate heat, the airflow circulates from the dustproof net. The dustproof net can isolate a large amount of external dust and flying insects, thereby preventing a large amount of dust and flying insects from accumulating inside the active power filter body and causing abnormal operation of its electrical components. The dustproof net can be disassembled and cleaned, which is simple to operate and easy to use.

[0014] 3. The utility model is provided with a cable fixing assembly, which can properly fix various cables inside the wiring cabinet body to avoid the cables inside being cluttered. This makes it easy to check the circuit of the electrical component in time and accurately when an abnormal situation occurs in the operation of the electrical component inside the active power filter body, and can timely and effectively eliminate the fault, thereby increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model as a whole viewed from the front;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model as a whole from the side;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the heat dissipation control component of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the heat dissipation and dustproof component of the utility model;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the cable fixing assembly of the utility model.

[0021] In the figure: 1. active power filter body; 2. heat dissipation and dustproof assembly; 201. dustproof net; 202. fixed seat; 203. first spring; 204. plug rod; 205. rotating seat; 3. heat dissipation control assembly; 301. temperature sensor; 302. controller; 303. telescopic shell; 304. telescopic inner core; 305. power supply; 306. rotating sheet; 307. control power supply; 308. cooling fan; 4. wiring cabinet body; 5. cable fixing assembly; 501. rotating shaft; 502. cable fixing shell; 503. U-shaped block; 504. second spring; 505. bump. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figure 1 and Figure 3 As shown, an active power filter includes an active power filter body 1, the outer wall of the active power filter body 1 is connected with a heat dissipation and dustproof component 2, and a heat dissipation control component 3 is installed inside the active power filter body 1; the heat dissipation control component 3 includes a temperature sensor 301, a controller 302, a telescopic shell 303, a telescopic inner core 304, a power supply 305, a rotating piece 306, a control power supply 307, and a heat dissipation fan 308. The heat dissipation control component 3 is convenient for sensing the temperature generated when the electrical component is working through the temperature sensor 301 and controlling the operation of the heat dissipation fan 308. The telescopic inner core 304 is connected to the outer wall of the active power filter body 1. The telescopic housing 303 and the rotating piece 306 form a sliding structure, and the rotating piece 306 forms a rotating structure through the power supply 305 and the control power supply 307; the temperature condition inside the active power filter body 1 is sensed by the temperature sensor 301, and after being processed by the controller 302, it can be transmitted in the form of an electrical signal after the temperature sensor 301 senses that the temperature inside the active power filter body 1 rises to a certain level, thereby controlling the operation of the cooling fan 308, thereby achieving the purpose of cooling the inside of the active power filter body 1, without the need for manual operation by personnel, and saving resources.

[0025] See also Figure 2 and Figure 4As shown, an active power filter, a heat dissipation and dustproof component 2, includes a dustproof net 201, a fixed seat 202, a first spring 203, a plug rod 204, and a rotating seat 205. The heat dissipation and dustproof component 2 can isolate external dust and flying insects. The dustproof net 201 forms a detachable structure with the active power filter body 1 through the plug rod 204, and the plug rod 204 forms an elastic structure with the fixed seat 202 through the first spring 203, and the dustproof net 201 forms a rotating structure with the active power filter body 1 through the plug rod 204 and the rotating seat 205; when the active power filter body 1 uses the heat dissipation fan 308 to dissipate heat, the air flow circulates from the dustproof net 201, and the dustproof net 201 can isolate a large amount of external dust and flying insects, thereby preventing a large amount of dust and flying insects from accumulating inside the active power filter body 1 and causing abnormal operation of its electrical components, and the dustproof net 201 can be disassembled and cleaned, which is simple to operate and easy to use.

[0026] See also Figure 1 , Figure 2 and Figure 5 As shown, a wiring cabinet comprises a wiring cabinet body 4, wherein a cable fixing assembly 5 is installed inside the wiring cabinet body 4; the cable fixing assembly 5 comprises a rotating shaft 501, a cable fixing shell 502, a U-shaped block 503, a second spring 504, and a protrusion 505; the cable fixing assembly 5 can properly fix cables of various electrical components; the cable fixing shell 502 forms a rotating structure with the wiring cabinet body 4 through the rotating shaft 501, and the cable fixing shell 502 forms a detachable structure with the wiring cabinet body 4 through the U-shaped block 503 and the protrusion 505, and the protrusion 505 forms an elastic structure with the cable fixing shell 502 through the U-shaped block 503, the second spring 504; various cables inside the wiring cabinet body 4 can be properly fixed to avoid the cables inside the wiring cabinet body 4 from being cluttered, so that when an abnormal situation occurs in the operation of the electrical components inside the active power filter body 1, the circuit of the electrical components can be checked promptly and accurately, and the fault can be promptly and effectively eliminated, thereby increasing the practicality of the device.

[0027] Working principle: First, when the electrical components inside the active power filter body 1 start to work, they will generate a lot of heat, which will be dissipated to the outside through the dustproof net 201. At the same time, the temperature sensor 301 will sense its temperature. When the temperature rises to a certain level, it will be transmitted in the form of an electrical signal under the control of the controller 302, so that the telescopic inner core 304 extends from the telescopic outer shell 303, and pushes the rotating piece 306 to rotate around the power supply 305 and touch the control power supply 307. The power supply 305 can provide electrical energy, and there is an electrical connection between the control power supply 307 and the cooling fan 308. At this time, the power of the cooling fan 308 can be turned on. When the circuit is connected, the cooling fan 308 starts to work to increase the air circulation speed, so that the heat is dissipated more quickly. Then, the air will bring a lot of dust during the circulation process, and the dust will be isolated by the dustproof net 201. After a long time, a lot of dust will be contaminated on the dustproof net 201, which will affect the heat dissipation of the electrical components inside the active power filter body 1 to a certain extent. At this time, the plug rod 204 can be pressed, and the plug rod 204 will squeeze the first spring 203 and retract into the fixed seat 202. At this time, the dustproof net 201 can be rotated through the rotating seat 205 and the plug rod 204 on its top. Press the plug rod 204 again to disassemble the dustproof net 201 for cleaning;

[0028] Next, the cables in the wiring cabinet body 4 are engaged in the holes inside the cable fixing shell 502. At this time, the U-shaped block 503 is pressed so that it can squeeze the second spring 504 with the protrusion 505 and move closer to the side of the cable fixing shell 502. At the same time, the cable fixing shell 502 is rotated to fit the inner wall of the wiring cabinet body 4. At the same time, the U-shaped block 503 is released. At this time, the protrusion 505 can be pushed to the side away from the cable fixing shell 502 under the action of the elastic force of the second spring 504 itself, so that the cable fixing shell 502 can be fixed on the inner wall of the wiring cabinet body 4, and the cable can be properly fixed.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An active power filter, characterized in that: It comprises an active power filter body (1), the outer wall of the active power filter body (1) is connected with a heat dissipation and dust prevention component (2), and a heat dissipation control component (3) is installed inside the active power filter body (1); The heat dissipation control component (3) comprises a temperature sensor (301), a controller (302), a telescopic shell (303), a telescopic inner core (304), a power supply (305), a rotating piece (306), a control power supply (307), and a heat dissipation fan (308). The side of the temperature sensor (301) is electrically connected to the controller (302), and the outer wall of the controller (302) is electrically connected to the telescopic shell (303), and the inside of the telescopic shell (303) is slidably connected to the telescopic inner core (304), the side of the telescopic inner core (304) is connected to the power supply (305), and the bottom of the power supply (305) is rotatably connected to the rotating piece (306), the side of the rotating piece (306) is connected to the control power supply (307), and the top of the control power supply (307) is electrically connected to the heat dissipation fan (308).

2. An active power filter according to claim 1, characterized in that: The telescopic inner core (304) forms a sliding structure through the telescopic outer shell (303) and the rotating piece (306), and the rotating piece (306) forms a rotating structure through the power supply (305) and the control power supply (307).

3. An active power filter according to claim 1, characterized in that: The heat dissipation and dustproof component (2) comprises a dustproof net (201), a fixed seat (202), a first spring (203), an insertion rod (204), and a rotating seat (205); the fixed seat (202) is arranged on the side of the dustproof net (201), and the first spring (203) is installed inside the fixed seat (202); and the top of the first spring (203) installed inside the fixed seat (202) is fixedly connected to the insertion rod (204), and the outer wall of the dustproof net (201) is fixedly connected to the rotating seat (205).

4. An active power filter according to claim 3, characterized in that: The dustproof net (201) forms a detachable structure with the active power filter body (1) via an insertion rod (204), the insertion rod (204) forms an elastic structure with the fixing seat (202) via a first spring (203), and the dustproof net (201) forms a rotating structure with the active power filter body (1) via the insertion rod (204), the rotating seat (205).

Images