Device for improving working environment of frequency conversion cabinet terminal

Abstract

The utility model relates to the technical field of frequency conversion cabinets, and particularly discloses a frequency conversion cabinet terminal working environment improving device which comprises a frequency conversion cabinet body, a plurality of temperature sensors are arranged in the frequency conversion cabinet body, a first motor is arranged in the frequency conversion cabinet body, and a power output shaft of the first motor is fixedly connected with a threaded rod. The threaded rod is rotatably installed in the frequency conversion cabinet body, a sliding rod is arranged in the frequency conversion cabinet body, the sliding rod and the threaded rod are provided with a fixed-point cooling mechanism used for conducting fixed-point cooling on the interior of the frequency conversion cabinet body, and the frequency conversion cabinet body is provided with a circulating mechanism used for circulating airflow. The technical problem that when the local temperature in an existing frequency conversion cabinet is too high, fixed-point cooling cannot be carried out is solved.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter cabinet technology, and specifically discloses a device for improving the working environment of frequency converter cabinet terminals. Background Technology

[0002] In underground heat exchange stations, the working environment of frequency converter cabinets faces many seasonal challenges. In summer, the shutdown of the units leads to poor ventilation in the station, making it difficult for moisture to be expelled, which significantly increases the humidity inside the frequency converter cabinets. This high humidity environment can easily cause electrical equipment to become damp and even cause short circuits, seriously threatening the normal operation and service life of the equipment. In winter, some frequency converter cabinets are poorly installed and cannot be moved, resulting in poor heat dissipation and excessively high internal temperatures. By installing an intelligent temperature control system, the internal temperature of the frequency converter cabinet can be reduced, thereby improving the terminal working environment of the frequency converter cabinet.

[0003] For example, utility model patent CN211089457U discloses a moisture-proof frequency converter cabinet, including an isolation base, a frequency converter cabinet, a mounting frame, and a cabinet door. The frequency converter cabinet is bolted to the top of the isolation base, and the mounting frame is bolted to the top of the inside of the frequency converter cabinet. The cabinet door is hinged to the left side of the front of the frequency converter cabinet, and sealing strips are tightly fitted around the right side of the door. Positioning grooves are provided around the front of the frequency converter cabinet. An isolation net is bolted to the bottom right side of the frequency converter cabinet, and a heat sink is bolted to the bottom right side of the frequency converter cabinet, with the heat sink tightly fitted to the isolation net. An air intake hood is bolted to the top of the inside of the mounting frame, and a stainless steel mesh bag containing a desiccant block is bolted to the inside of the mounting frame. This moisture-proof frequency converter cabinet can keep dry, protecting the electronic components inside from moisture damage, and is highly practical.

[0004] Existing frequency converter cabinet environment improvement devices only solve the problem of keeping the environment inside the frequency converter cabinet dry. However, when the local temperature inside the frequency converter cabinet is too high, they cannot perform targeted cooling. They can only cool the entire frequency converter cabinet, which leads to high energy consumption and energy waste. This method cannot accurately deal with local high temperature areas, and the cooling effect is not ideal. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a device for improving the working environment of the inverter cabinet terminal, so as to solve the technical problem that the existing inverter cabinet cannot perform targeted cooling when the local temperature is too high.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a frequency converter cabinet body, within which several temperature sensors are installed. A first motor is also installed within the cabinet body, with a threaded rod fixedly connected to the power output shaft of the first motor. The threaded rod is rotatably mounted within the cabinet body. A sliding rod is installed within the cabinet body, and a point-cooling mechanism for targeted cooling within the cabinet body is installed on the sliding rod and the threaded rod. A circulation mechanism for circulating airflow is also provided on the cabinet body. The circulation mechanism performs operations such as cooling and dehumidification on the airflow within the cabinet body. When the temperature sensors within the cabinet body detect excessively high local temperatures, the point-cooling mechanism targets and cools the affected area, achieving precise and efficient point-cooling, significantly improving the cooling effect and avoiding ineffective energy consumption.

[0007] Furthermore, the targeted cooling mechanism includes a movable frame, one end of which is threadedly connected to the threaded rod, and the other end of which is slidably connected to the sliding rod. A transfer box is mounted on the movable frame, and a through pipe is connected to the transfer box. A first air supply pipe, fixedly connected to the movable frame, is connected to the through pipe. A first air outlet on the first air supply pipe faces the inverter cabinet body. A secondary targeted cooling device is installed on the first air supply pipe, and one end of a first corrugated pipe is connected to the first air supply pipe. An air supply device is installed on the other end of the first corrugated pipe. The targeted cooling mechanism drives the movable frame through the threaded rod, allowing the first air supply pipe to move flexibly to the high-temperature area inside the inverter cabinet for precise cooling. This precision is difficult to achieve through traditional overall cooling. In conjunction with the transfer box and the first corrugated pipe, it can quickly deliver cold air to the high-temperature area, improving cooling efficiency.

[0008] Furthermore, the secondary fixed-point cooling device includes a second air supply duct, which is slidably mounted on the first air supply duct. A second air outlet on the second air supply duct faces the inverter cabinet body. A screw is installed on the first air supply duct, and the screw is connected to the threaded rod of the second air supply duct and then fixedly connected to the power output shaft of the second motor. The second motor is mounted on the movable frame. One end of the second air supply duct is connected to a second corrugated pipe, and the other end of the second corrugated pipe is connected to the transfer box. Based on the first air supply duct, the second air supply duct can again accurately locate the high-temperature area within the inverter cabinet, achieving precise coverage of the high-temperature area. Furthermore, the second air supply duct, in conjunction with the screw and the second motor, can move flexibly laterally, accurately locating areas with higher temperatures, further improving cooling efficiency, enhancing local cooling capacity, and providing a more reliable guarantee for stable equipment operation.

[0009] Furthermore, the air supply device includes a hydraulic rod, which is fixedly connected to the inverter cabinet body. The telescopic end of the hydraulic rod is fixedly connected to a top cover communicating with the first corrugated pipe. Two sliding blocks are respectively provided on both sides of the top cover, and the two sliding blocks are slidably engaged with two sliding strips fixedly connected to the inverter cabinet body. The top cover of this device can move under the drive of the hydraulic rod, effectively collecting the cold airflow from the circulation device and accurately delivering it to the first air supply duct. Compared with the traditional method that requires a separate cooling device, this design avoids the purchase and operating costs of additional cooling equipment, simplifies the system structure, and improves overall energy efficiency.

[0010] Furthermore, the circulation mechanism includes an air inlet duct connected to the lower part of the inverter cabinet body. An air inlet fan is installed inside the air inlet duct. A heating module and a cooling module are also installed inside the air inlet duct. An air outlet duct is connected to the upper part of the inverter cabinet body. An air outlet fan is installed inside the air outlet duct. One end of the air outlet duct is connected to a connecting pipe, and the other end of the connecting pipe is connected to the air inlet duct. A dehumidification module is installed inside the connecting pipe. This circulation mechanism, through the design of the air inlet and outlet ducts, achieves airflow circulation inside the inverter cabinet, reducing the entry of external airflow. This not only reduces the impact of external humid air on the cabinet's internal environment but also improves the overall temperature and humidity control efficiency. The heating and cooling modules in the air inlet duct can adjust the air temperature entering the inverter cabinet as needed, ensuring that the equipment inside the cabinet operates in a suitable temperature environment. The air outlet fan in the air outlet duct extracts the hot air from the cabinet and returns it to the air inlet duct through the connecting pipe, forming a closed loop, further improving energy utilization efficiency.

[0011] The working principle and beneficial effects of this solution are as follows:

[0012] When the temperature sensor inside the inverter cabinet detects that the temperature in a certain area is too high, the hydraulic rod first pushes the top cover to move towards the air inlet duct until the top cover is above the air inlet duct. At this time, the cooling module in the air supply duct is activated, and the air inlet fan sends the cold air into the inverter cabinet. The cold air is collected by the top cover and enters the transfer box through the first corrugated pipe, then flows into the first air supply duct, and finally exits from the first air outlet. At the same time, the first motor drives the threaded rod to rotate, which drives the first air supply duct to move up and down, accurately positioning the high temperature area for cooling.

[0013] If the cooling rate is insufficient, the second motor can be started to drive the second air supply pipe to move laterally. After the second air supply pipe is in place, the valve on the second corrugated pipe opens, and the cold air flows out from the second air outlet through the second air supply pipe. The first and second air supply pipes work together to increase the gas flow in the high-temperature area and cool down quickly.

[0014] The first and second air supply ducts of the positioning cooling mechanism work in perfect coordination to achieve precise temperature positioning. The first air supply duct moves up and down via a threaded rod to cover high-temperature areas at different heights; the second air supply duct, based on the first air supply duct, moves laterally to further precisely locate localized high-temperature points. Compared with traditional overall cooling methods, this mechanism not only improves cooling efficiency but also avoids the waste of cold airflow, providing a strong guarantee for the stable operation of equipment within the frequency converter cabinet.

[0015] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0017] Figure 2 This is a schematic diagram of the fixed-point cooling mechanism and the circulation mechanism in the embodiment;

[0018] Figure 3 Example Figure 2 A magnified view of a section at point B in the middle;

[0019] Figure 4 A cross-sectional view of the circulation mechanism in the embodiment;

[0020] Figure 5 This is a partial cross-sectional view of the fixed-point cooling mechanism in the embodiment;

[0021] Figure 6 This is a schematic diagram of the fixed-point cooling mechanism in an embodiment.

[0022] Figure 7 Example Figure 2 A magnified view of a portion of point A in the middle.

[0023] The following components are labeled in the attached diagram: 1. Inverter cabinet body; 2. Insulation layer; 3. Temperature sensor; 5. First motor; 6. Threaded rod; 7. Sliding rod; 8. Moving frame; 9. Transfer box; 10. Through pipe; 11. First air supply pipe; 12. First corrugated pipe; 13. First air supply outlet; 14. Second air supply outlet; 15. Second air supply pipe; 16. Screw; 17. Second motor; 18. Second corrugated pipe; 19. Valve; 20. Slide groove; 21. Mounting groove; 22. Hydraulic rod; 23. Top cover; 24. Sliding block; 25. Sliding strip; 26. Air inlet pipe; 27. Heating module; 28. Cooling module; 29. ​​Air inlet fan; 30. Air outlet pipe; 31. Air outlet fan; 32. Connecting pipe; 33. Dehumidification module. Detailed Implementation

[0024] The following detailed description illustrates the specific implementation method:

[0025] Example

[0026] like Figures 1 to 7 As shown, a device for improving the working environment of a frequency converter cabinet terminal is disclosed, including a frequency converter cabinet body 1, a heat insulation layer 2, several temperature sensors 3, a first motor 5, a threaded rod 6, a sliding rod 7, a fixed-point cooling mechanism, and a circulation mechanism. The frequency converter cabinet body 1 is provided with a heat insulation layer 2. Several temperature sensors 3 are installed inside the frequency converter cabinet body 1. The first motor 5 is fixedly connected inside the frequency converter cabinet body 1, with its power output end pointing vertically upwards. The power output end of the first motor 5 is fixedly connected to a threaded rod 6 via a coupling. The end of the threaded rod 6 away from the first motor 5 is rotatably connected to the frequency converter cabinet body 1. A sliding rod 7 is fixedly connected inside the frequency converter cabinet body 1. A fixed-point cooling mechanism is installed on the sliding rod 7 and the threaded rod 6 for fixed-point cooling of the frequency converter cabinet body 1. A circulation mechanism is installed on the frequency converter cabinet body 1 to circulate the airflow inside the frequency converter cabinet body 1. The temperature sensors 3 are existing technologies, such as... Figure 1 and Figure 2 As shown.

[0027] The fixed-point cooling mechanism includes a movable frame 8, a transfer box 9, a connecting pipe 10, a first air supply pipe 11, a secondary fixed-point cooling device, a first corrugated pipe 12, and an air supply device. The movable frame 8 is threadedly connected to a threaded rod 6. The end of the movable frame 8 away from the threaded rod 6 is slidably connected to a sliding rod 7. The transfer box 9 is fixedly connected to the movable frame 8. The transfer box 9 is hollow inside. The connecting pipe 10 is fixedly connected to the transfer box 9 and communicates with it. The end of the connecting pipe 10 away from the transfer box 9 is connected to the first air supply pipe 11. The first air supply pipe 11 is fixedly connected to the movable frame 8. A first air outlet 13 is opened on the side of the first air supply pipe 11 closest to the inverter cabinet body 1. A secondary fixed-point cooling device is installed above the first air supply pipe 11. A first corrugated pipe 12 is fixedly connected below the first air supply pipe 11 and communicates with it. An air supply device is installed at the end of the first corrugated pipe 12 away from the first air supply pipe 11. Figure 5 and Figure 6 As shown.

[0028] The secondary fixed-point cooling device includes a second air supply duct 15, a screw 16, a second motor 17, a second corrugated pipe 18, and a valve 19. A slide groove 20 is provided above the first air supply duct 11, and the second air supply duct 15 is slidably mounted on the slide groove 20. The movement direction of the second air supply duct 15 is perpendicular to the movement direction of the first air supply duct 11. The length of the second air supply duct 15 is shorter than that of the first air supply duct 11. A second air outlet 14 is provided on the side of the second air supply duct 15 closest to the inverter cabinet body 1. A screw is rotatably connected inside the slide groove 20. 16. One end of the screw 16 is rotatably connected to the slide groove 20, and the other end of the screw 16 passes through the slide groove 20 and is fixedly connected to the coupling on the power output shaft of the second motor 17. The movable frame 8 is provided with a mounting groove 21, and the second motor 17 is installed in the mounting groove 21. A second corrugated pipe 18 is provided on the second air supply pipe 15, and the second corrugated pipe 18 is connected to the second air supply pipe 15. The end of the second corrugated pipe 18 away from the second air supply pipe 15 is connected to the transfer box 9. A valve 19 is provided on the second corrugated pipe 18, such as... Figure 5 and Figure 7 As shown.

[0029] The air supply device includes a hydraulic rod 22, a top cover 23, two sliding blocks 24, and two sliding strips 25. The hydraulic rod 22 is fixedly connected to the bottom inner surface of the inverter cabinet body 1. The top cover 23 is fixedly connected to the telescopic end of the hydraulic rod 22. The top cover 23 communicates with the first corrugated pipe 12. Two sliding blocks 24 are fixedly connected to both sides of the top cover 23. The two sliding blocks 24 are slidably engaged with the two sliding strips. Both sliding strips are fixedly connected to the bottom inner surface of the inverter cabinet body 1. Figure 2 and Figure 3 As shown.

[0030] The circulation mechanism includes an air inlet duct 26, a heating module 27, a cooling module 28, an air inlet fan 29, an air outlet duct 30, an air outlet fan 31, a connecting pipe 32, and a dehumidification module 33. An air inlet duct 26 is fixedly connected to the bottom of the inverter cabinet body 1, and the air inlet duct 26 communicates with the interior of the inverter cabinet body 1. The radius of the air inlet duct 26 is smaller than the radius of the top cover 23. The heating module 27 and the cooling module 28 are installed inside the air inlet duct 26, and the air inlet fan 29 is also installed inside the air inlet duct 26. 29 is located above the heating module 27 and the cooling module 28. An air outlet duct 30 is fixedly connected to the top of the inverter cabinet body 1. The air outlet duct 30 communicates with the interior of the inverter cabinet body 1. An air outlet fan 31 is installed inside the air outlet duct 30. A connecting pipe 32 is installed on the air outlet duct 30. The end of the connecting pipe 32 away from the air outlet duct 30 is connected to the air inlet duct 26. A dehumidification module 33 is installed inside the connecting pipe 32. The heating module 27, the cooling module 28, and the dehumidification module 33 are all existing technologies. Figure 4 As shown.

[0031] In practice

[0032] When the temperature sensor 3 inside the inverter cabinet body 1 detects that the temperature in a certain area of ​​the cabinet is higher than that in other areas, the hydraulic rod 22 is activated. The hydraulic rod 22 drives the top cover 23 to move closer to the moving air inlet duct 26. When the top cover 23 moves, it moves on the slide bar through the sliding blocks 24 on both sides. When the top cover 23 is completely moved above the air supply duct, the hydraulic rod 22 stops working. At this time, the cooling module 28 in the air supply duct is activated, and then the cooler airflow is delivered to the inverter cabinet body 1 through the air inlet fan 29. Since the top cover 23 is located above the air inlet duct 26, the cool airflow will be collected by the top cover 23 and enter the first corrugated pipe 12. Then the first corrugated pipe 12 delivers the cool airflow to the transfer box 9 on the moving frame 8. At this time, the cool airflow in the transfer box 9 will be delivered to the first air supply duct 11 through the through pipe 10. The cool airflow in the first air supply duct 11 can then be discharged through the first air outlet 13.

[0033] When the cold air is discharged through the first air supply pipe 11, the first motor 5 can be started. The first motor 5 drives the threaded rod 6 to rotate. Since the threaded rod 6 is threadedly connected to the moving frame 8, the first motor 5 can rotate forward and reverse to control the threaded rod 6 to drive the moving frame 8 to rise and fall on the slide rod 7. The threaded rod 6 drives the first air supply pipe 11 on the moving frame 8 to move to the area with a higher temperature detected by the temperature sensor 3. At this time, the first air supply pipe 11 can be used to perform targeted cooling treatment on the area with a higher temperature inside the frequency converter cabinet body 1.

[0034] If the cooling speed is slow during the cooling process of the first air supply duct 11, the second motor 17 in the mounting slot 21 can be started. The second motor 17 drives the screw 16 to rotate, and the screw 16 can drive the second air supply duct 15 to move on the slide 20. Since the length of the second air supply duct 15 is less than that of the first air supply duct 11, and the first air supply duct 11 can only move up and down through the threaded rod 6, the lateral movement of the second air supply duct 15 can accurately locate the high-temperature area inside the inverter cabinet body 1. When the second air supply duct 15 moves to the high-temperature area, the second corrugated pipe 18 on the second air supply duct 15 opens the valve 19. At this time, the cold air in the transfer box 9 can enter the second air supply duct 15 through the second corrugated pipe 18, and the cold air in the second air supply duct can be discharged through the second air outlet 14. Through the synergistic effect of the first air supply duct 11 and the second air supply duct 15, the gas flow in the high-temperature area inside the inverter cabinet body 1 is increased, achieving a faster cooling effect.

[0035] When it is not necessary to perform targeted cooling treatment inside the inverter cabinet body 1, the hydraulic rod 22 drives the top cover 23 to move away from the air inlet pipe 26. At this time, the air inlet fan 29 in the air inlet pipe 26 and the air outlet fan 31 in the air outlet pipe 30 can start normal internal airflow circulation. The heating module 27 and cooling module 28 in the air inlet pipe 26 can adjust the temperature inside the inverter cabinet body 1. The air inlet pipe 26 and the air outlet pipe 30 are connected by the connecting pipe 32 to realize airflow circulation inside the inverter cabinet body 1, reducing the problem of humidity and temperature being difficult to control due to the introduction of external airflow. At the same time, the dehumidification module 33 in the connecting pipe 32 can also perform dehumidification operation inside the inverter cabinet body 1. The heat insulation layer 2 on the inverter cabinet body 1 can also further isolate the external temperature from the temperature influence inside the inverter cabinet body 1.

[0036] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics in the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or its practicality.

Claims

1. A device for improving the working environment of a variable frequency cabinet terminal, characterized in that: Including variable frequency cabinet body, a plurality of temperature sensors are arranged in the variable frequency cabinet body, a first motor is arranged in the variable frequency cabinet body, the power output shaft of the first motor is fixedly connected with a threaded rod, the threaded rod is rotatably installed in the variable frequency cabinet body, a sliding rod is arranged in the variable frequency cabinet body, the sliding rod and the threaded rod are provided with a fixed-point cooling mechanism for fixed-point cooling in the variable frequency cabinet body, and a circulating mechanism for circulating airflow is arranged on the variable frequency cabinet body.

2. The variable frequency cabinet terminal working environment improvement device according to claim 1, characterized in that: The fixed-point cooling mechanism comprises a moving frame, one end of the moving frame is threadedly connected with the threaded rod, the other end of the moving frame is slidably connected with the sliding rod, a transfer box is installed on the moving frame, a through pipe is communicated on the transfer box, a first air supply pipe fixedly connected with the moving frame is communicated on the through pipe, a first air supply opening formed in the first air supply pipe faces the variable frequency cabinet body, a secondary fixed-point cooling device is arranged on the first air supply pipe, one end of a first bellows pipe is communicated with the first air supply pipe, and an air supply device is arranged on the other end of the first bellows pipe.

3. The variable frequency cabinet terminal working environment improvement device according to claim 2, characterized in that: The secondary fixed-point cooling device comprises a second air supply pipe, the second air supply pipe is slidably clamped on the first air supply pipe, a second air supply opening formed in the second air supply pipe faces the variable frequency cabinet body, a screw rod is arranged on the first air supply pipe, the screw rod is fixedly connected with the power output shaft of a second motor after being threadedly connected with the second air supply pipe, the second motor is arranged on the moving frame, one end of a second bellows pipe is communicated with the second air supply pipe, and the other end of the second bellows pipe is communicated with the transfer box.

4. The variable frequency cabinet terminal working environment improvement device according to claim 3, characterized in that: The air supply device comprises a hydraulic rod, the hydraulic rod is fixedly connected in the variable frequency cabinet body, a top cover communicated with the first bellows pipe is fixedly connected to the telescopic end of the hydraulic rod, two sliding blocks are arranged on the both sides of the top cover, respectively, and two sliding blocks are slidably clamped on two sliding rods fixedly connected in the variable frequency cabinet body.

5. The variable frequency cabinet terminal working environment improvement device according to claim 4, characterized in that: The circulating mechanism comprises an air inlet pipe, the air inlet pipe is communicated with the lower portion of the variable frequency cabinet body, an air inlet fan is arranged in the air inlet pipe, a heating module and a cooling module are arranged in the air inlet pipe, respectively, an air outlet pipe is communicated with the upper portion of the variable frequency cabinet body, an air outlet fan is arranged in the air outlet pipe, the air outlet pipe is communicated with one end of a connecting pipe, the other end of the connecting pipe is communicated with the air inlet pipe, and a dehumidification module is arranged in the connecting pipe.

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