Filtering device for low-voltage active power supply

Abstract

The utility model relates to the technical field of electrical equipment, in particular to a low-voltage active filtering device, which comprises a cabinet body and a dehumidification mechanism arranged inside the cabinet body, the dehumidification mechanism comprises an electric heating disc and a motor which are fixed on the cabinet body, the output end of the motor is fixedly connected with a driving wheel, the outer side of the driving wheel is in transmission connection with a belt, and the belt is connected with a power supply. The inner wall of the belt is in transmission connection with a driven wheel; the bottom of the driven wheel is fixedly connected with a blowing fan; the mounting mechanism is arranged in the cabinet body, the mounting mechanism comprises a vertical plate fixed on the inner wall of the cabinet body, one side of the vertical plate is provided with three mounting racks for mounting equipment, the inner walls of the vertical plate and the mounting racks are provided with threaded holes, and the inner walls of the threaded holes are in threaded connection with bolts. The problems that due to the fact that the environment where part of filtering devices are placed is humid, moisture in the devices is too large, water drops are generated, and if too many water drops drip on equipment, circuit faults are caused, and the equipment is damaged are solved.

Description

Technical Field

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

[0002] Active filter is a new type of power electronic device used to dynamically suppress harmonics and compensate for reactive power. It can compensate for harmonics of varying magnitude and frequency as well as varying reactive power. It is called active because, as the name suggests, the device requires a power supply. Its application can overcome the shortcomings of traditional harmonic suppression and reactive power compensation methods such as LC filters, realize dynamic tracking compensation, and can compensate for both harmonics and reactive power. Active filters require a power supply.

[0003] Patent application number CN202021384179.2 is a low-voltage active filtering device that is easy to use. The utility model classifies each module through partitions, so that the internal structure is clear and convenient for subsequent repair and maintenance. At the same time, since the partition structure is provided with a heat dissipation hole structure, the heat dissipation performance of the overall device is improved to ensure the service life of the device. Such a design is highly practical and has broad market application prospects. However, when the device is in use, due to the relatively humid environment in which some filtering devices are placed, the internal moisture of the device is too high and water droplets will be generated. If too many water droplets drip on the equipment, it will cause circuit failure and cause equipment damage. Utility Model Content

[0004] The purpose of the utility model is to provide a low-voltage active filtering device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-voltage active filtering device, comprising a cabinet, and also comprising a dehumidification mechanism arranged inside the cabinet, the dehumidification mechanism comprising an electric heating plate and a motor fixed to the cabinet, the output end of the motor is fixedly connected to a driving wheel, the outer side of the driving wheel is transmission-connected to a belt, the inner wall of the belt is transmission-connected to a driven wheel, and the bottom of the driven wheel is fixedly connected to a blowing fan; a mounting mechanism arranged inside the cabinet, the mounting mechanism comprising a vertical plate fixed to the inner wall of the cabinet, one side of the vertical plate is provided with a mounting frame for three mounting devices, the inner walls of the vertical plate and the mounting frame are both provided with threaded holes, and the inner walls of the threaded holes are threadedly connected with bolts.

[0006] Preferably, the top of the driven wheel is fixedly connected to a first rotating shaft rotating on the inner wall of the cabinet, the bottom of the driving wheel is fixedly connected to a second rotating shaft, and the bottom end of the second rotating shaft is rotatably connected to a bearing fixed to the top of the electric heating plate.

[0007] Preferably, a distribution box for providing a low-voltage power supply is fixedly connected to the inner wall of the cabinet, and a power control switch, a contactor and an APF module are respectively provided on one side of the mounting frame. The distribution box, the power control switch, the contactor and the APF module are all electrically connected through wires.

[0008] Preferably, a partition is fixedly connected to the inner wall of the cabinet, and the inner wall of the partition is connected to an air suction duct.

[0009] Preferably, one end of the air suction duct is connected to a fan fixed to the inner wall of the cabinet, and one end of the fan is connected to an exhaust duct running through the back of the cabinet.

[0010] Preferably, a cabinet door is provided on one side of the cabinet body, and a pull rod and a control screen are respectively fixedly connected to one side of the cabinet door.

[0011] Preferably, an upper sealing plate and a lower sealing plate are respectively fixedly connected to one side of the cabinet.

[0012] Preferably, the four corners of the bottom of the cabinet are fixedly connected to wheel frames, and the inner wall of the wheel frame is rotatably connected to the wheel.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model can quickly dehumidify the inside of the filter device by arranging a dehumidification mechanism, thereby avoiding water droplets caused by excessive moisture and causing damage to the equipment. The utility model solves the problem that when some filter devices are currently in use, water droplets will be generated due to excessive moisture in the device due to the relatively humid environment in which the filter devices are placed. If too many water droplets drip onto the device, it will cause circuit failure and cause damage to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of a preferred embodiment of a low-voltage active filtering device provided by the utility model;

[0016] Figure 2 A schematic diagram of the structure inside the cabinet provided by the utility model;

[0017] Figure 3 A schematic diagram of the structure of the dehumidification mechanism provided by the utility model;

[0018] Figure 4 This is a structural schematic diagram of the installation mechanism provided by the utility model.

[0019] In the figure: 1. cabinet; 2. dehumidification mechanism; 21. electric heating plate; 22. motor; 23. driving wheel; 24. belt; 25. driven wheel; 26. blowing fan; 27. first rotating shaft; 28. second rotating shaft; 29. ​​bearing; 3. mounting mechanism; 31. vertical plate; 32. mounting frame; 33. threaded hole; 34. bolt; 4. distribution box; 5. power control switch; 6. contactor; 7. APF module; 8. wire; 9. partition; 10. suction duct; 11. fan; 12. exhaust duct; 13. cabinet door; 14. pull rod; 15. control panel; 16. upper cover plate; 17. lower cover plate; 18. wheel frame; 19. wheel. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] See also Figure 1-4 As shown, a filtering device for low-voltage active power supply includes a cabinet 1 and a dehumidifying mechanism 2 arranged inside the cabinet 1, the dehumidifying mechanism 2 includes an electric heating plate 21 and a motor 22 fixed to the cabinet 1, the output end of the motor 22 is fixedly connected to a driving wheel 23, the outer side of the driving wheel 23 is transmission-connected to a belt 24, the inner wall of the belt 24 is transmission-connected to a driven wheel 25, and the bottom of the driven wheel 25 is fixedly connected to a blowing fan 26; a mounting mechanism 3 arranged inside the cabinet 1, the mounting mechanism 3 includes a vertical plate 31 fixed to the inner wall of the cabinet 1, one side of the vertical plate 31 is provided with a mounting frame 32 for mounting three devices, the inner walls of the vertical plate 31 and the mounting frame 32 are both provided with threaded holes 33, the inner walls of the threaded holes 33 are threadedly connected to Bolts 34; by setting up the cabinet 1, the filtering equipment can be placed, by setting up the electric heating plate 21, heat energy can be generated by electric energy, by setting up the motor 22, the driving wheel 23 can be driven to rotate, by setting up the driving wheel 23, the belt 24 can be driven to rotate, by setting up the belt 24, the driven wheel 25 can be driven to rotate, by setting up the driven wheel 25, the blowing fan 26 can be driven to rotate, by setting up the blowing fan 26, the heat generated by the electric heating plate 21 can be blown to the inside of the cabinet 1 to dry the internal moisture, by setting up the vertical plate 31, the mounting frame 32 can be connected, by setting up the mounting frame 32, the power control switch 5, the contactor 6 and the APF module 7 can be installed, and by setting the threaded holes 33 and the bolts 34, the mounting frame 32 and the vertical plate 31 can be easily installed and disassembled.

[0022] See also Figure 2 and Figure 3As shown, the top of the driven wheel 25 is fixedly connected to a first rotating shaft 27 that rotates on the inner wall of the cabinet 1, the bottom of the driving wheel 23 is fixedly connected to a second rotating shaft 28, and the bottom end of the second rotating shaft 28 is rotatably connected to a bearing 29 fixed to the top of the electric heating plate 21; by setting the first rotating shaft 27, the rotation stability of the driven wheel 25 can be improved, by setting the second rotating shaft 28, the rotation stability of the driving wheel 23 can be improved, and by setting the bearing 29, the rotation stability of the second rotating shaft 28 can be improved.

[0023] See also Figure 1 and Figure 2 As shown, a distribution box 4 for providing a low-voltage power supply is fixedly connected to the inner wall of the cabinet 1, and a power control switch 5, a contactor 6 and an APF module 7 are respectively arranged on one side of the mounting frame 32, and the distribution box 4, the power control switch 5, the contactor 6 and the APF module 7 are all electrically connected through an electric wire 8; a partition 9 is fixedly connected to the inner wall of the cabinet 1, and an air suction pipe 10 is connected to the inner wall of the partition 9; one end of the air suction pipe 10 is connected to a fan 11 fixed to the inner wall of the cabinet 1, and one end of the fan 11 is connected to an exhaust pipe 12 running through the back of the cabinet 1; a cabinet door 13 is arranged on one side of the cabinet 1, and a pull rod 14 and a control panel 15 are respectively fixedly connected to one side of the cabinet door 13; an upper sealing plate 16 and a lower sealing plate 17 are respectively fixedly connected to one side of the cabinet 1; wheel frames 18 are fixedly connected to the four corners of the bottom of the cabinet 1, and wheels 19 are rotatably connected to the inner wall of the wheel frame 18; a low-voltage power supply can be provided by arranging the distribution box 4, and the power control switch 5 can be controlled When the power is turned on and off, the impact current will reach about one hundred times the rated value of the device when the power is just turned on. The material of the contactor 6 can withstand the large current. After the current is suppressed, the current flows to the APF module 7 through the wire 8, thereby greatly reducing the risk of damage to the equipment. The operation is carried out through the APF module 7. The space inside the cabinet 1 can be divided by setting the partition 9. The gas in the cabinet 1 can be extracted through the suction pipe 10 by setting the fan 11, and discharged to the outside of the cabinet 1 from the exhaust pipe 12, so that the air in the cabinet 1 can circulate. Filters are provided in the suction pipe 10 and the exhaust pipe 12 to prevent large dust from entering the cabinet 1. The cabinet 1 can be sealed by setting the cabinet door 13, the upper cover plate 16 and the lower cover plate 17. The cabinet door 13 can be opened and closed by setting the pull rod 14. The filter device can be controlled by setting the control panel 15. The wheels 19 can be installed by setting the wheel frame 18, and the wheels 19 can be easily moved by setting the cabinet 1.

[0024] Working principle: The worker moves the cabinet 1 to the designated position through the wheel 19, fixes it, opens the cabinet door 13 through the pull rod 14, fixes the mounting frame 32 to the vertical plate 31 with the bolt 34, and then respectively installs the power control switch 5, the contactor 6 and the APF module 7 on the mounting frame 32, and electrically connects the distribution box 4, the power control switch 5, the contactor 6 and the APF module 7 through the wire 8. When the power is just turned on, the impact current will reach about one hundred times the rated value of the device. The material of the contactor 6 withstands the large current. After the current is suppressed, the current flows to the APF module 7 through the wire 8, thereby greatly reducing the damage to the equipment. The risk of damage is eliminated by operating the APF module 7. When the humidity in the cabinet 1 is too high, the electric heating plate 21 and the motor 22 can be turned on at the same time. The electric heating plate 21 generates heat energy through electrical energy. The motor 22 drives the driving wheel 23 to rotate, the driving wheel 23 drives the belt 24 to rotate, the belt 24 drives the driven wheel 25 to rotate, and the driven wheel 25 drives the blowing fan 26 to rotate. The blowing fan 26 blows the heat generated by the electric heating plate 21 to the inside of the cabinet 1 to dry the internal moisture. When the cabinet 1 needs to be ventilated, the fan 11 can be turned on to extract the gas in the cabinet 1 through the suction pipe 10, and discharge it to the outside of the cabinet 1 from the exhaust pipe 12, so that the air in the cabinet 1 can be circulated.

[0025] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A low voltage active filtering device, comprising a cabinet (1), characterized in that: Also includes: A dehumidification mechanism (2) is arranged inside the cabinet (1), the dehumidification mechanism (2) comprising an electric heating plate (21) and a motor (22) fixed to the cabinet (1), the output end of the motor (22) being fixedly connected to a driving wheel (23), the outer side of the driving wheel (23) being transmission-connected to a belt (24), the inner wall of the belt (24) being transmission-connected to a driven wheel (25), and the bottom of the driven wheel (25) being fixedly connected to a blowing fan (26); A mounting mechanism (3) is arranged inside the cabinet (1), the mounting mechanism (3) comprising a vertical plate (31) fixed to the inner wall of the cabinet (1), one side of the vertical plate (31) is provided with a mounting frame (32) for mounting three devices, the inner walls of the vertical plate (31) and the mounting frame (32) are both provided with threaded holes (33), and the inner walls of the threaded holes (33) are threadedly connected with bolts (34).

2. A low voltage active filter device according to claim 1, characterized in that: The top of the driven wheel (25) is fixedly connected to a first rotating shaft (27) that rotates on the inner wall of the cabinet (1), the bottom of the driving wheel (23) is fixedly connected to a second rotating shaft (28), and the bottom end of the second rotating shaft (28) is rotatably connected to a bearing (29) fixed to the top of the electric heating plate (21).

3. A low voltage active filter device according to claim 1, characterized in that: A distribution box (4) for providing a low-voltage power supply is fixedly connected to the inner wall of the cabinet (1); a power control switch (5), a contactor (6) and an APF module (7) are respectively arranged on one side of the mounting frame (32); and the distribution box (4), the power control switch (5), the contactor (6) and the APF module (7) are all electrically connected via an electric wire (8).

4. A low voltage active filter device according to claim 3, characterized in that: A partition plate (9) is fixedly connected to the inner wall of the cabinet (1), and an air suction pipe (10) is connected to the inner wall of the partition plate (9).

5. A low voltage active filter device according to claim 4, characterized in that: One end of the air suction pipe (10) is connected to a fan (11) fixed to the inner wall of the cabinet (1), and one end of the fan (11) is connected to an exhaust pipe (12) that passes through the back of the cabinet (1).

6. A low voltage active filter device according to claim 5, characterized in that: A cabinet door (13) is provided on one side of the cabinet body (1), and a pull rod (14) and a control panel (15) are respectively fixedly connected to one side of the cabinet door (13).

7. A low voltage active filter device according to claim 6, characterized in that: An upper sealing plate (16) and a lower sealing plate (17) are respectively fixedly connected to one side of the cabinet (1).

8. A low voltage active filtering device according to claim 7, characterized in that: The four corners of the bottom of the cabinet (1) are fixedly connected to wheel frames (18), and the inner wall of the wheel frame (18) is rotatably connected to a wheel (19).

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