Ventilation and heat dissipation device of high-voltage frequency converter

Abstract

The utility model relates to the technical field of frequency converter equipment, in particular to a ventilation and heat dissipation device for a high-voltage frequency converter, which is characterized in that the top of a high-voltage frequency converter main body is rotatably provided with a vertical pipe penetrating through a heat dissipation block, the bottom of the vertical pipe is provided with a plurality of through holes positioned in the high-voltage frequency converter, and a top pipe is arranged above the vertical pipe; a plurality of air outlet plates located above the cooling fins are arranged at the top end of the top pipe, a plurality of air outlet holes are formed in the lower ends of the air outlet plates, a first motor is arranged on one side of the high-voltage frequency converter body, air blowing of a draught fan is matched with rotation of the air outlet plates, comprehensive and efficient air cooling heat dissipation can be carried out on the cooling fins, and the heat dissipation efficiency of the high-voltage frequency converter body is improved. According to the high-voltage frequency converter, the defects of a traditional single heat dissipation hole heat dissipation mode are overcome, a large amount of heat generated in the high-voltage frequency converter can be dissipated in time, the operation stability of the high-voltage frequency converter in a high-temperature environment is effectively improved, and the fault risk caused by overheating is reduced.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter equipment technology, specifically a ventilation and heat dissipation device for a high-voltage frequency converter. Background Technology

[0002] High-voltage frequency converters are typically in the MW range and generate a significant amount of heat during normal operation. Components such as isolation transformers, reactors, power units, and control systems are major heat sources. For instance, high-voltage frequency converters used in the metallurgical and steel industries, which drive high-power equipment such as rolling mills, generate substantial heat during operation, necessitating the use of ventilation and heat dissipation devices for heat dissipation.

[0003] In the heat dissipation process of existing high-voltage frequency converters, hot air is dissipated through the heat dissipation holes on the converter itself. This single heat dissipation method will cause the heat inside the high-voltage frequency converter to not be dissipated in time when the temperature is high, which will affect the stability of the high-voltage frequency converter during use. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a ventilation and heat dissipation device for high-voltage frequency converters.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage frequency converter ventilation and heat dissipation device, comprising a high-voltage frequency converter body, a temperature sensor inside the high-voltage frequency converter body, multiple heat dissipation holes on both sides of the high-voltage frequency converter body, a heat dissipation block on the top of the high-voltage frequency converter body, and heat dissipation fins on the heat dissipation block;

[0008] The top of the high-voltage inverter body is rotatably equipped with a vertical pipe that penetrates the heat sink. The bottom of the vertical pipe has multiple through holes located inside the high-voltage inverter body. A top pipe is provided above the vertical pipe. The top of the top pipe has multiple air outlet plates located above the heat sink fins. The lower end of the air outlet plates has multiple air outlet holes. The bottom end of the vertical pipe has a driven bevel gear block. A first motor is provided on one side of the high-voltage inverter body. The output end of the first motor has a drive bevel gear block that cooperates with the driven bevel gear block. A fan is provided at the top of the high-voltage inverter body. The air outlet end of the fan has a duct. One end of the duct has a diverter pipe. The top pipe and the vertical pipe are respectively inserted into both ends of the diverter pipe and are rotatably connected to the diverter pipe. The bottom of the top pipe and the top of the vertical pipe have multiple vent holes. The vertical pipe and the top pipe are connected by a connecting rod. The temperature sensor is connected to the first motor and the fan by electrical signals.

[0009] To make the environment inside the high-voltage frequency converter body cleaner, the improvement of this utility model is that two fixing frames are symmetrically arranged on both sides of the high-voltage frequency converter body, and multiple heat dissipation holes are located inside the fixing frames. A dustproof plate is installed inside the fixing frame, and a ring frame is also provided inside the fixing frame. The dustproof plate is fixed inside the ring frame, and the ring frame is threadedly connected to the fixing frame.

[0010] To facilitate cleaning of the heat dissipation fins, the present invention includes the following improvements: a rotating block is provided at the top of the vertical tube; a second motor is provided at the upper end of the main body of the high-voltage frequency converter; a gear is provided at the output end of the second motor; the gear is connected to the rotating block via a chain; a cleaning plate is provided at the top of the rotating block; and a brush that contacts the heat dissipation fins is provided at the lower end of the cleaning plate.

[0011] Furthermore, an improvement of this utility model is that the conduit and the shunt tube are an integral structure, and both the conduit and the shunt tube are made of metal.

[0012] Furthermore, an improvement of this utility model is that both the first motor and the second motor are servo motors.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a ventilation and heat dissipation device for high-voltage frequency converters, which has the following beneficial effects:

[0015] High-efficiency heat dissipation: By combining the blower with the rotating air outlet plate, the heat dissipation fins can be cooled in a comprehensive and efficient manner, which makes up for the shortcomings of the traditional single heat dissipation hole heat dissipation method. It can dissipate the large amount of heat generated inside the high-voltage frequency converter in a timely manner, effectively improving the stability of the high-voltage frequency converter in high-temperature environments and reducing the risk of failure caused by overheating.

[0016] Wide heat dissipation range: The rotating design of the air outlet plate allows the cold air to cover a larger area of ​​the heat dissipation fins. Compared with fixed-direction air outlet, it greatly improves the uniformity and comprehensiveness of heat dissipation, ensuring better heat dissipation effect on the top of the entire high-voltage frequency converter body. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This utility model Figure 1 The main view;

[0019] Figure 3 This is a schematic diagram of the connection structure between the jacking pipe and the vertical pipe in this utility model;

[0020] Figure 4 The driving bevel gear block and the driven bevel gear block are described in this utility model.

[0021] In the diagram: 1. High-voltage frequency converter body; 2. Fixing frame; 3. Heat dissipation hole; 4. Ring frame; 5. Dustproof plate; 6. Heat dissipation block; 7. First motor; 8. Drive bevel gear block; 9. Vertical pipe; 10. Driven bevel gear block; 11. Top pipe; 12. Connecting rod; 13. Vent hole; 14. Air outlet plate; 15. Fan; 16. Duct; 17. Diverter pipe; 18. Second motor; 19. Gear; 20. Rotating block; 21. Cleaning plate; 22. Chain. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 The present invention provides a high-voltage frequency converter ventilation and heat dissipation device, comprising a high-voltage frequency converter body 1, a temperature sensor inside the high-voltage frequency converter body 1, multiple heat dissipation holes 3 on both sides of the high-voltage frequency converter body 1, a heat dissipation block 6 on the top of the high-voltage frequency converter body 1, and heat dissipation fins on the heat dissipation block 6.

[0024] A vertical pipe 9, penetrating the heat sink 6, is rotatably mounted on the top of the high-voltage inverter body 1. The bottom of the vertical pipe 9 has multiple through holes located inside the high-voltage inverter body 1. A top pipe 11 is located above the vertical pipe 9. Multiple air outlet plates 14, located above the heat sink fins, are located at the top of the top pipe 11. Multiple air outlet holes are located at the lower end of the air outlet plates 14. A driven bevel gear block 10 is located at the bottom of the vertical pipe 9. A first motor 7 is located on one side of the high-voltage inverter body 1. The output end of the first motor 7 is equipped with a mechanism that matches the driven bevel gear block 10. The drive bevel gear block 8 is combined. The upper end of the high voltage frequency converter body 1 is provided with a fan 15. The air outlet end of the fan 15 is provided with a duct 16. One end of the duct 16 is provided with a diverter pipe 17. The top pipe 11 and the vertical pipe 9 are respectively inserted into the two ends of the diverter pipe 17 and are rotatably connected to the diverter pipe 17. The bottom of the top pipe 11 and the top of the vertical pipe 9 are provided with multiple vent holes 13. The vertical pipe 9 and the top pipe 11 are connected by a connecting rod 12. The temperature sensor is connected to the first motor 7 and the fan 15 by electrical signals.

[0025] In this embodiment, the conduit 16 and the shunt tube 17 are an integral structure, and both the conduit 16 and the shunt tube 17 are made of metal.

[0026] In this embodiment, both the first motor 7 and the second motor 18 are servo motors.

[0027] Temperature sensing and control startup: A temperature sensor inside the high-voltage frequency converter body 1 monitors the internal temperature in real time. When the temperature reaches a set threshold, the temperature sensor triggers the first motor 7 and the fan 15 to start working via an electrical signal. This is the key triggering mechanism for starting the entire cooling system, ensuring that the ventilation and cooling device can respond promptly when the high-voltage frequency converter needs cooling.

[0028] Air-cooled circulation principle: After the fan 15 starts, the generated cold air enters the distribution pipe 17 through the duct 16. Since the top pipe 11 and the vertical pipe 9 are respectively inserted into both ends of the distribution pipe 17 and rotatably connected to the distribution pipe 17, the cold air can be evenly distributed into the top pipe 11 and the vertical pipe 9. The cold air in the top pipe 11 enters the air outlet plate 14 through the vent 13 at its bottom, and finally is blown out from the multiple air outlet holes at the lower end of the air outlet plate 14, directly acting on the heat dissipation fins, carrying away the heat on the heat dissipation fins, and realizing air-cooled heat dissipation of the top of the high-voltage frequency converter body 1. At the same time, the cold air can also enter the interior of the vertical pipe 9 through the vent 13 at its top, and then enter the interior of the high-voltage frequency converter body 1 through the through hole, which will cool the interior, promote the internal air circulation and heat exchange. After the high-voltage frequency converter is put into operation, the temperature sensor automatically monitors the internal temperature. When the temperature rises to the set threshold, the ventilation and heat dissipation device will automatically start. Fan 15 starts blowing air, and the first motor 7 drives the vertical pipe 9 and the top pipe 11 to rotate and dissipate air, which cools the heat sink fins. During this process, no manual intervention is required, and the system operates automatically.

[0029] Rotary air outlet principle: When the first motor 7 is working, the drive bevel gear block 8 at its output end drives the driven bevel gear block 10 to rotate. Since the driven bevel gear block 10 is fixed to the bottom end of the vertical pipe 9, the vertical pipe 9 rotates as well. The vertical pipe 9 is connected to the top pipe 11 through the connecting rod 12, so the top pipe 11 also rotates. In this way, the air outlet plate 14 rotates around the top of the high-voltage frequency converter body 1, and the blown cold air can more comprehensively cover the heat dissipation fins, improving heat dissipation efficiency.

[0030] In this embodiment, the top of the vertical pipe 9 is provided with a rotating block 20, the upper end of the high voltage frequency converter body 1 is provided with a second motor 18, the output end of the second motor 18 is provided with a gear 19, the gear 19 is connected to the rotating block 20 through a chain 22, the top of the rotating block 20 is provided with a cleaning plate 21, and the lower end of the cleaning plate 21 is provided with a brush that contacts the heat dissipation fins.

[0031] Heat sink fin cleaning principle: When cleaning the heat sink fins is required, the second motor 18 is started. The output gear 19 of the second motor 18 drives the rotating block 20 to rotate via the chain 22. The cleaning plate 21 on top of the rotating block 20 rotates accordingly. The brush at the lower end of the cleaning plate 21 contacts the heat sink fins, cleaning them during rotation to remove dust and other debris, ensuring that the heat dissipation performance of the heat sink fins is not affected. The cleanliness of the heat sink fins is checked regularly. When a large amount of dust is found on the heat sink fins, the second motor 18 is manually started. The second motor 18 drives the cleaning plate 21 to rotate, cleaning the heat sink fins. After cleaning is completed, the second motor 18 is turned off.

[0032] In this embodiment, two fixing frames 2 are symmetrically arranged on both sides of the high voltage frequency converter body 1. Multiple heat dissipation holes 3 are located inside the fixing frames 2. A dustproof plate 5 is provided inside the fixing frame 2. A ring frame 4 is also provided inside the fixing frame 2. The dustproof plate 5 is fixed inside the ring frame 4. The ring frame 4 is threadedly connected to the fixing frame 2.

[0033] The dustproof plates 5 installed inside the mounting brackets 2 on both sides of the high-voltage frequency converter body 1 can effectively prevent external dust and other impurities from entering the interior of the high-voltage frequency converter body 1 through the heat dissipation holes 3. The ring frame 4 fixes the dustproof plates 5 and is threadedly connected to the mounting brackets 2, making it convenient to remove the dustproof plates 5 for cleaning or replacement when needed.

[0034] Regularly check the dustproof effect of the dustproof panel 5. When a lot of dust accumulates on the dustproof panel 5 and affects ventilation, the dustproof panel 5 can be removed and cleaned by disassembling the ring frame 4. After cleaning, reinstall the dustproof panel 5 and tighten the ring frame 4.

[0035] The temperature sensor's electrical signal interface with the first motor 7 and the fan 15 enables automatic control of the heat dissipation device. This eliminates the need for constant manual monitoring of the high-voltage frequency converter's temperature and manual activation of the cooling equipment, reducing manual operation costs and allowing for more timely and accurate responses to cooling demands, thus improving the overall intelligence of the equipment operation.

[0036] The second motor 18 drives the cleaning plate 21 and brush to clean the heat sink fins, effectively removing dust and other debris. Keeping the heat sink fins clean maintains their good heat dissipation performance, extends the service life of the heat sink fins and the entire high-voltage frequency converter, and reduces malfunctions caused by poor heat dissipation due to dust accumulation on the heat sink fins.

[0037] The dustproof plate 5 is threadedly connected to the fixed frame 2 via the ring frame 4, which facilitates disassembly, cleaning or replacement; the installation and connection methods of each component are reasonably designed, which makes it easy to disassemble and install each component during equipment maintenance and repair, reducing the difficulty and cost of maintenance work.

[0038] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A high-voltage frequency converter ventilation and heat dissipation device, comprising a high-voltage frequency converter body (1), wherein a temperature sensor is provided inside the high-voltage frequency converter body (1), and multiple heat dissipation holes (3) are provided on both sides of the high-voltage frequency converter body (1), characterized in that: The top of the high voltage frequency converter body (1) is provided with a heat sink (6), and the heat sink (6) is provided with heat sink fins; The top of the high-voltage inverter body (1) is rotatably provided with a vertical pipe (9) that penetrates the heat sink (6). The bottom of the vertical pipe (9) is provided with multiple through holes located inside the high-voltage inverter body (1). A top pipe (11) is provided above the vertical pipe (9). The top of the top pipe (11) is provided with multiple air outlet plates (14) located above the heat sink fins. The lower end of the air outlet plates (14) is provided with multiple air outlet holes. The bottom end of the vertical pipe (9) is provided with a driven bevel gear block (10). A first motor (7) is provided on one side of the high-voltage inverter body (1). The output end of the first motor (7) is provided with a drive mechanism that cooperates with the driven bevel gear block (10). The upper end of the main body (1) of the high voltage inverter is provided with a fan (15), the air outlet end of the fan (15) is provided with a duct (16), one end of the duct (16) is provided with a diverter pipe (17), the top pipe (11) and the vertical pipe (9) are respectively inserted into the two ends of the diverter pipe (17) and are rotatably connected to the diverter pipe (17). The bottom of the top pipe (11) and the top of the vertical pipe (9) are provided with multiple vent holes (13), and the vertical pipe (9) and the top pipe (11) are connected by a connecting rod (12). The temperature sensor is connected to the first motor (7) and the fan (15) respectively by electrical signal.

2. The high-voltage frequency converter ventilation and heat dissipation device according to claim 1, characterized in that: Two mounting brackets (2) are symmetrically arranged on both sides of the main body (1) of the high voltage frequency converter. Multiple heat dissipation holes (3) are located inside the mounting brackets (2). A dustproof plate (5) is installed inside the mounting brackets (2).

3. The high-voltage frequency converter ventilation and heat dissipation device according to claim 2, characterized in that: The fixed frame (2) is also provided with an annular frame (4) inside, and the dustproof plate (5) is fixed inside the annular frame (4). The annular frame (4) is threadedly connected to the fixed frame (2).

4. The high-voltage frequency converter ventilation and heat dissipation device according to claim 3, characterized in that: The top of the vertical pipe (9) is provided with a rotating block (20), the upper end of the high voltage frequency converter body (1) is provided with a second motor (18), the output end of the second motor (18) is provided with a gear (19), the gear (19) is connected to the rotating block (20) through a chain (22), the top of the rotating block (20) is provided with a cleaning plate (21), and the lower end of the cleaning plate (21) is provided with a brush that contacts the heat dissipation fins.

5. The high-voltage frequency converter ventilation and heat dissipation device according to claim 4, characterized in that: The conduit (16) and the shunt tube (17) are an integral structure, and both the conduit (16) and the shunt tube (17) are made of metal.

6. The high-voltage frequency converter ventilation and heat dissipation device according to claim 5, characterized in that: Both the first motor (7) and the second motor (18) are servo motors.

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