A monitoring device for an electrical distribution cabinet

Abstract

The application relates to the technical field of power distribution cabinets, and discloses a monitoring device for a power distribution cabinet, which comprises a power distribution cabinet body, a rain-shielding frame is fixed at the top of the power distribution cabinet body, a rotating shaft is rotationally connected in the rain-shielding frame, the rotating shaft penetrates through the power distribution cabinet body and is rotationally connected with the power distribution cabinet body, double-layer clamping plates are fixed on the surface of the rotating shaft, driven fan blades are fixed at the top of the rotating shaft, a threaded sleeve is threadedly connected to the bottom end of the rotating shaft, and a frame is fixed at the bottom of the threaded sleeve. The monitoring device for the power distribution cabinet blows the driven fan blades to rotate by utilizing external wind power, the driven fan blades drive the threaded sleeve and the frame to rotate in the power distribution cabinet body, the frame generates wind power for heat dissipation, the use frequency of the motor is reduced, the energy consumption and equipment loss of the motor are saved, the temperature sensor is driven to rotate synchronously, the monitoring range of the temperature sensor is increased, and the monitoring of the electrical elements is more accurate.

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet technology, specifically to a monitoring device for power distribution cabinets. Background Technology

[0002] Distribution cabinets (boxes) are divided into power distribution cabinets (boxes), lighting distribution cabinets (boxes), and metering cabinets (boxes). They are the final-level equipment in the power distribution system. Distribution cabinets are a general term for motor control centers. Distribution cabinets are used in situations where the load is relatively dispersed and there are fewer circuits. Motor control centers are used in situations where the load is concentrated and there are more circuits. They distribute the electrical energy of a certain circuit of the previous level power distribution equipment to the nearest load. This level of equipment should provide protection, monitoring and control for the load.

[0003] Outdoor distribution cabinets are a type of distribution cabinet mainly used in outdoor open-air locations. To improve safety and protection, they are usually equipped with a base. Currently, distribution cabinets used in smart grids are usually equipped with temperature and humidity sensors to monitor the working status and environment of the electrical components inside the cabinet. This eliminates the need for monitoring personnel to frequently go to the site for monitoring and inspection, thus achieving the purpose of intelligent monitoring. In the present technology, when the power distribution cabinet is used outdoors, a fan is installed in the power distribution cabinet to ensure that the inside of the power distribution cabinet is kept at a suitable operating temperature for heat dissipation. However, the operation of the fan itself also generates heat, and long-term use of the fan for heat dissipation will reduce the life of the fan and increase maintenance costs. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a monitoring device for power distribution cabinets, which solves the problems mentioned in the background art.

[0005] The present invention provides the following technical solution: a monitoring device for a power distribution cabinet, comprising a power distribution cabinet body, a rain cover fixed to the top of the power distribution cabinet body, a rotating shaft rotatably connected inside the rain cover, the rotating shaft passing through the power distribution cabinet body and rotatably connected to the power distribution cabinet body, a double-layer clamping plate fixed to the surface of the rotating shaft, a driven fan blade fixed to the top of the rotating shaft, and a threaded sleeve threadedly connected to the bottom end of the rotating shaft; The bottom of the threaded sleeve is fixed with a frame, a temperature sensor is fixed on one side of the frame, an inner box is fixed inside the frame, a nozzle is fixed on one side of the inner box, the nozzle passes through the frame, a first spring is fixed on one side of the inner wall of the inner box, a push plate is fixed on one end of the first spring, the push plate is slidably sealed to the inner wall of the inner box, and a feed port is opened on the side of the frame near the nozzle, the feed port is connected to the inner box. The rain shelter has a motor fixed inside, and the output shaft of the motor has an active fan blade fixed to it. The surface of the active fan blade is connected to a belt, and the rotating shaft is connected to the belt drive. The belt is located in the middle of the double-layer plate.

[0006] Preferably, the main body of the power distribution cabinet has a door hinged to its surface, ventilation slots are provided on both sides of the main body of the power distribution cabinet, electrical components are fixed on the inner wall of the main body of the power distribution cabinet, and an exhaust port is provided at the bottom of the main body of the power distribution cabinet.

[0007] Preferably, a support frame is fixed to one side of the top of the rain shelter, and a baffle is fixed to the top of the support frame.

[0008] Preferably, the bottom of the main body of the power distribution cabinet is fixed with a base, a first air duct is opened on the side of the base near the cabinet door, a second air duct is opened on the side of the base near the ventilation slot, and a connecting groove is opened on the top of the base, the connecting groove being aligned with the discharge port.

[0009] Preferably, a fixing frame is slidably connected to the surface of the base, and four mating interfaces are provided on the surface of the fixing frame. A sliding door is hinged to the side of the fixing frame away from the cabinet door, and the four mating interfaces are respectively aligned with the two ends of the first air duct and the second air duct.

[0010] Preferably, a cylinder is fixed at the middle position of the bottom of the inner cavity of the fixed frame, the output shaft of the cylinder is fixed to the bottom of the base, a second spring is fixed at the bottom of the inner cavity of the fixed frame, and a movable frame is fixed at the top of the second spring. There are four movable frames in total, and the four movable frames are slidably connected to the two ends of the first air duct and the second air duct respectively.

[0011] Preferably, a side frame is fixed to the top of the base near the ventilation slot, and a secondary air slot is opened on the surface of the side frame. The secondary air slot is aligned with the ventilation slot. There are two side frames in total, each corresponding to one of the two ventilation slots. A T-shaped frame is fixed to the top of the base on the side away from the cabinet door.

[0012] Preferably, a water collection cavity is provided on one side of the top of the rain shelter, a rain sensor is fixed on the inner wall of the water collection cavity, a flow guide box is fixed inside the main body of the power distribution cabinet, a sliding rod is slidably and sealed inside the flow guide box, the sliding rod is slidably and sealed to the water collection cavity, a limit sealing plate is fixed on the top of the sliding rod, and a water inlet hole and a water outlet hole are respectively provided on the surface of the sliding rod.

[0013] Preferably, the water inlet is blocked by the inner wall of the water collection cavity when the slide rod is not pushed out, and the water outlet has two layers, one inside the flow guide box and the other outside the flow guide box.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The monitoring device for the distribution cabinet utilizes external wind power to rotate the driven fan blades, causing the driven fan blades to drive the threaded sleeve and frame to rotate inside the main body of the distribution cabinet. This allows the frame to generate wind power for heat dissipation while reducing the frequency of motor use, saving motor energy consumption and equipment wear. It also drives the temperature sensor to rotate synchronously, increasing the monitoring range of the temperature sensor and thus making the monitoring of electrical components more accurate.

[0015] 2. The monitoring device for the power distribution cabinet uses a cylinder to retract the base and the main body of the power distribution cabinet, causing them to retract into the interior of the fixed frame. This not only uses the side frame to close the ventilation slots and the fixed frame to close the first and second air ducts, but also uses the T-shaped frame to push the sliding rod, allowing rainwater accumulated in the rain shelter to enter the sliding rod through the water inlet and be discharged into the guide box through the water outlet. The guide box absorbs heat from inside the power distribution cabinet, further reducing the frequency of motor use and thus saving energy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a schematic diagram of the structure of the power distribution cabinet body and the base of the present invention; Figure 4 This is an internal structural view of the power distribution cabinet of the present invention; Figure 5 This is a cross-sectional view of the base of the present invention; Figure 6 This is a cross-sectional view of the base and fixing frame of the present invention; Figure 7 This is a cross-sectional view of the main body of the power distribution cabinet of the present invention; Figure 8 This is a schematic diagram of the structure of the threaded sleeve and rotating shaft of the present invention; Figure 9 This is a schematic diagram of the main body of the power distribution cabinet of the present invention in a sunken state; Figure 10 This is a schematic diagram of the structure of the slide rod protruding according to the present invention; Figure 11 for Figure 7 A magnified view of a portion of point A in the middle.

[0017] In the diagram: 1. Main body of the distribution cabinet; 11. Cabinet door; 12. Ventilation slot; 13. Electrical components; 14. Discharge outlet; 2. Rain cover; 21. Stand; 22. Baffle; 3. Shaft; 301. Double-layer card plate; 31. Driven fan blade; 32. Threaded sleeve; 33. Frame; 34. Temperature sensor; 35. Embedded box; 36. Nozzle; 37. First spring; 38. Push plate; 39. Feed inlet; 4. Motor; 41. Main... 42. Moving fan blades; 5. Belt; 6. Base; 7. First air duct; 8. Second air duct; 9. Connecting slot; 10. Fixing bracket; 11. Connecting interface; 12. Sliding door; 13. Cylinder; 14. Second spring; 15. Movable frame; 16. Side frame; 17. Secondary air duct; 18. T-shaped frame; 19. Water collection chamber; 10. Rain sensor; 11. Flow guide box; 12. Slide rod; 13. Sealing plate; 14. Water inlet; 15. Water outlet. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figure 1-11 A monitoring device for a power distribution cabinet includes a power distribution cabinet body 1, a rain cover 2 fixed to the top of the power distribution cabinet body 1, a rotating shaft 3 rotatably connected inside the rain cover 2, the rotating shaft 3 passing through the power distribution cabinet body 1 and rotatably connected to the power distribution cabinet body 1, a double-layer card plate 301 fixed to the surface of the rotating shaft 3, a driven fan blade 31 fixed to the top of the rotating shaft 3, a threaded sleeve 32 threadedly connected to the bottom end of the rotating shaft 3, a frame 33 fixed to the bottom of the threaded sleeve 32, a temperature sensor 34 fixed to one side of the frame 33, and an embedded box 35 fixed inside the frame 33. A nozzle 36 is fixed on one side of the inner box 35. The nozzle 36 passes through the frame 33. A first spring 37 is fixed on one side of the inner wall of the inner box 35. A push plate 38 is fixed at one end of the first spring 37. The push plate 38 is slidably and sealed to the inner wall of the inner box 35. A feed inlet 39 is opened on the side of the frame 33 near the nozzle 36. The feed inlet 39 is connected to the inner box 35. A motor 4 is fixed inside the rain cover 2. An active fan blade 41 is fixed on the output shaft of the motor 4. A belt 42 is connected to the surface of the active fan blade 41. The rotating shaft 3 is connected to the belt 42. The belt 42 is located in the middle of the double-layer card plate 301. The main body of the power distribution cabinet 1 is hinged with a cabinet door 11. Ventilation slots 12 are provided on both sides of the main body of the power distribution cabinet 1. Electrical components 13 are fixed on the inner wall of the main body of the power distribution cabinet 1. A discharge port 14 is provided at the bottom of the main body of the power distribution cabinet 1. A stand 21 is fixed on one side of the top of the rain cover 2. A baffle 22 is fixed on the top of the stand 21. During operation, when the temperature sensor 34 detects that the internal temperature of the main body 1 of the power distribution cabinet is too high, the temperature sensor 34 transmits the signal to the motor 4 and starts the motor 4, so that the motor 4 drives the active fan blade 41 to rotate. The rotation of the active fan blade 41 generates wind power and performs heat dissipation on the wiring and components connected to the surface of the electrical component 13. In the prior art, after the temperature sensor 34 senses the temperature, the motor 4 is automatically turned on after the temperature reaches the threshold, and the active fan blade 41 is used for heat dissipation. Therefore, this application will not elaborate further.

[0020] Specifically, in actual operation, when the outdoor wind is strong, the wind can enter the underside of the stand 21 and blow the driven fan blade 31, thereby causing the driven fan blade 31 to drive the rotating shaft 3 to rotate, which in turn causes the threaded sleeve 32 to rotate, which in turn causes the threaded sleeve 32 to drive the frame 33 to rotate. Through the rotation of the frame 33, wind is generated inside the main body 1 of the distribution cabinet, which can then perform heat dissipation on the wiring and components connected to the surface of the electrical components 13. This invention enables the frame 33 to rotate within the main body 1 of the power distribution cabinet when there is strong wind outdoors, thus performing air cooling. This causes the temperature inside the main body 1 of the power distribution cabinet to drop rapidly below the threshold, preventing the temperature sensor 34 from starting the motor 4. This reduces the running time of the motor 4, saves energy consumption, and extends the service life of the motor 4. Once the temperature inside the main body 1 of the power distribution cabinet rises above the threshold again, the motor 4 can be restarted to drive the active fan blades 41 for air cooling.

[0021] Furthermore, when the external wind blows the driven fan blade 31 to rotate, the driven fan blade 31 drives the threaded sleeve 32 and the frame 33 to rotate, which in turn causes the frame 33 to drive the temperature sensor 34 to rotate, thus causing the temperature sensor 34 to be in a cyclical movement state. This increases the accuracy of the temperature sensor 34 in monitoring different areas inside the main body 1 of the power distribution cabinet, improves the accuracy of the temperature sensor 34 monitoring, and makes it more timely for the present invention to start the motor 4 using the temperature sensor 34, and more timely for the present invention to dissipate heat using the motor 4 and the active fan blade 41. Secondly, when the motor 4 starts, the output shaft of the motor 4 can drive the belt 42 to rotate, and then the belt 42 drives the rotating shaft 3 to rotate. Thus, when the external wind force is small, the motor 4 can simultaneously drive the active fan blade 41 and the rotating shaft 3 to rotate, thereby making the active fan blade 41 and the frame 33 rotate synchronously. This makes the range of wind blowing by the frame 33 and the active fan blade 41 wider, thereby improving the heat dissipation effect of the present invention.

[0022] Furthermore, the interior of the embedded box 35 is filled with ultra-fine dry powder. When the temperature sensor 34 detects a fire inside the main body 1 of the power distribution cabinet, the temperature sensor 34 can be used to activate the nozzle 36, which will spray the ultra-fine dry powder from the embedded box 35 outwards. As the frame 33 rotates, it can drive the nozzle 36 to rotate, and spray the ultra-fine dry powder while rotating, thereby increasing the fire extinguishing range. As the amount of ultrafine dry powder sprayed decreases, the pressure of the ultrafine dry powder on the push plate 38 decreases. As a result, under the action of the first spring 37, the push plate 38 pushes the ultrafine dry powder toward the end closer to the nozzle 36, so that each nozzle 36 can be replenished and sprayed with ultrafine dry powder.

[0023] It should be noted that the threaded sleeve 32 can be removed from the surface of the rotating shaft 3, and the ultrafine dry powder can be added into the interior of the inner box 35 through the feed port 39 for subsequent use.

[0024] Example 2: A base 5 is fixed at the bottom of the main body 1 of the power distribution cabinet. A first air duct 51 is opened on the side of the base 5 near the cabinet door 11, and a second air duct 52 is opened on the side of the base 5 near the ventilation slot 12. A connecting slot 53 is opened on the top of the base 5. The connecting slot 53 is aligned with the discharge port 14. A fixing frame 6 is slidably connected to the surface of the base 5. Four mating interfaces 61 are opened on the surface of the fixing frame 6. A sliding door 62 is hinged on the side of the fixing frame 6 away from the cabinet door 11. The four mating interfaces 61 are respectively aligned with the two ends of the first air duct 51 and the second air duct 52. A cylinder 7 is fixed at the middle position of the bottom of the inner cavity of the fixing frame 6. The output shaft of cylinder 7 is fixed to the bottom of base 5. A second spring 71 is fixed to the bottom of the inner cavity of the fixed frame 6. A movable frame 72 is fixed to the top of the second spring 71. There are four movable frames 72 in total, and the four movable frames 72 are slidably connected to the two ends of the first air duct 51 and the second air duct 52 respectively. A side frame 8 is fixed to the top of the base 5 near the ventilation slot 12. A secondary air slot 81 is opened on the surface of the side frame 8. The secondary air slot 81 is aligned with the ventilation slot 12. There are two side frames 8 in total, corresponding to the two ventilation slots 12 respectively. A T-shaped frame 82 is fixed to the top of the base 5 away from the cabinet door 11. A water collection cavity 9 is opened on one side of the top of the rain cover 2. A rain sensor 91 is fixed to the inner wall of the water collection cavity 9. Specifically, based on Embodiment 1, when the outdoor wind force is strong, the outside wind force can enter the interior of the first air duct 51 or the second air duct 52 through the interface 61. Utilizing the Venturi effect, when the outside wind force enters the interior of the first air duct 51 or the second air duct 52, the wind speed increases and the hot air inside the main body 1 of the power distribution cabinet is drawn away. This allows the hot air inside the main body 1 of the power distribution cabinet to be absorbed into the interior of the first air duct 51 or the second air duct 52 through the exhaust port 14 and the connecting groove 53, and then discharged to the outside. This further improves the invention's ability to dissipate heat from the interior of the power distribution cabinet body 1 when facing strong outdoor winds, thereby ensuring that the interior of the power distribution cabinet body 1 is unlikely to reach the monitoring threshold of the temperature sensor 34, further reducing the starting conditions of the motor 4, and thus reducing the frequency of use of the motor 4, thereby achieving an energy-saving effect.

[0025] Furthermore, when facing heavy rain, the rain sensor 91 can be used to monitor the current rainfall. When the rainfall reaches the threshold, the rain sensor 91 can be used to activate the cylinder 7, causing the cylinder 7 to contract. The contraction of the cylinder 7 drives the base 5 and the main body of the power distribution cabinet 1 to move. During the movement, the base 5 and the main body of the power distribution cabinet 1 enter the interior of the fixed frame 6. When the main body 1 of the power distribution cabinet moves, it drives the ventilation slot 12 to move synchronously, causing the ventilation slot 12 to be misaligned with the secondary air slot 81. This results in the ventilation slot 12 being closed by the side frame 8, thereby sealing the main body 1 of the power distribution cabinet and improving its waterproof performance. At the same time, the cylinder 7 can drive the base 5 to retract into the interior of the fixing frame 6, causing the interface 61 to be misaligned with the two ports of the first air duct 51 and the second air duct 52. This further seals the first air duct 51 and the second air duct 52, further improving the waterproof performance of the main body 1 of the power distribution cabinet.

[0026] When the main body 1 of the distribution cabinet is retracted into the interior of the fixing frame 6, the cabinet door 11 is limited by the base 5, making the cabinet door 11 unable to be opened, thereby protecting the main body 1 of the distribution cabinet and the cabinet door 11 and improving the protection of the main body 1 of the distribution cabinet and the cabinet door 11.

[0027] Furthermore, when the main body 1 of the distribution cabinet and the base 5 are retracted toward the interior of the fixed frame 6, the movable frame 72 slides at the ports of the first air duct 51 and the second air duct 52 until the top of the inner cavity of the first air duct 51 and the second air duct 52 abuts against the top of the movable frame 72. At this time, the first air duct 51 and the second air duct 52 circulate with the interior of the fixed frame 6 through the movable frame 72. When the frame 33 and the active fan blade 41 rotate inside the main body of the distribution cabinet 1, the ventilation slot 12 is closed, leaving only the exhaust port 14 open. That is, the main body of the distribution cabinet 1 is connected to the interior of the fixed frame 6 through the exhaust port 14, the connecting slot 53, the first air duct 51 and the second air duct 52. At this time, the dust and debris accumulated inside the main body of the distribution cabinet 1 can be blown into the interior of the first air duct 51 and the second air duct 52, so that the dust and debris enter the interior of the fixed frame 6 through the movable frame 72, thereby achieving the effect of sorting out the debris inside the main body of the distribution cabinet 1. This reduces the accumulation of dust inside the main body 1 of the distribution cabinet, which could affect the wiring and components, and improves the service life of the electrical components 13.

[0028] It should be noted that the cylinder 7 is initially in the ejected state. A sliding door 62 is hinged to one side of the fixed frame 6. When the inside of the fixed frame 6 needs to be cleaned, the sliding door 62 can be opened to clean the inside of the fixed frame 6.

[0029] Example 3: A flow guide box 92 is fixed inside the main body 1 of the power distribution cabinet. A sliding rod 93 is slidably and sealed inside the flow guide box 92. The sliding rod 93 is slidably and sealed to the water collection cavity 9. A sealing plate 94 is fixed on the top of the sliding rod 93. A water inlet hole 95 and a water outlet hole 96 are respectively opened on the surface of the sliding rod 93. When the sliding rod 93 is not pushed out, the water inlet hole 95 is blocked by the inner wall of the water collection cavity 9. The water outlet hole 96 has two layers, one layer is located inside the flow guide box 92 and the other layer is located outside the flow guide box 92. Specifically, based on Embodiment 1 and Embodiment 2, when cylinder 7 retracts, cylinder 7 drives base 5 and main body 1 of power distribution cabinet to move toward the interior of fixed frame 6, thereby causing main body 1 of power distribution cabinet to drive rain cover 2 and flow guide box 92 to move synchronously, causing rain cover 2 and flow guide box 92 to drive slide rod 93 to move toward fixed frame 6. During the movement, slide rod 93 gradually approaches T-shaped frame 82 until the bottom of slide rod 93 contacts the top of T-shaped frame 82. When the T-shaped frame 82 contacts the slide bar 93, the cylinder 7 drives the base 5 and the main body of the power distribution cabinet 1 to continue to descend. The main body of the power distribution cabinet 1 then drives the rain cover 2 and the air guide box 92 to continue to descend, causing the slide bar 93 to continue to descend. Since the T-shaped frame 82 is fixed to the top of the base 5 and cannot move, the T-shaped frame 82 can push the slide bar 93 in the opposite direction, causing the slide bar 93 to slide inside the air guide box 92 and the rain cover 2. Until the bottom of the T-shaped frame 82 contacts the water guide box 92, the slide rod 93 drives the water outlet 96 to fully enter the interior of the water guide box 92, while the water inlet 95 simultaneously disengages from the rain cover 2. When it rains continuously outside, rainwater accumulates inside the rain cover 2 and enters the interior of the slide rod 93 through the water inlet 95, and then is discharged into the interior of the water guide box 92 through the water outlet 96, so that the interior of the water guide box 92 is filled with rainwater. As a result, a portion of the heat diversion box 92 is located inside the main body 1 of the power distribution cabinet, allowing the heat inside the main body 1 to be transferred to the heat diversion box 92, which in turn transfers the heat to the rainwater accumulated inside. The rainwater inside the heat diversion box 92 then effectively dissipates heat from the main body 1 of the power distribution cabinet, further improving the heat dissipation effect of the invention on the main body 1 of the power distribution cabinet in rainy weather and reducing the frequency of use of the motor 4.

[0030] When the rain sensor 91 detects that the rain has stopped, it can activate the cylinder 7, causing the cylinder 7 to push the base 5 and the main body of the distribution cabinet 1 outward from the inside of the fixed frame 6. At this time, the ventilation slot 12 returns to alignment with the secondary air slot 81, that is, the inside of the main body of the distribution cabinet 1 is reconnected to the outside through the ventilation slot 12. Meanwhile, the T-shaped frame 82 releases the push on the slide rod 93, and the slide rod 93 falls back under the action of gravity, causing the slide rod 93 to drive the water outlet 96 down, so that one layer of the water outlet 96 is located outside the diversion box 92, and the other layer is located inside the diversion box 92. Thus, the water accumulated in the diversion box 92 can be discharged to the outside through the water outlet 96.

[0031] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A monitoring device for a power distribution cabinet, comprising a power distribution cabinet body (1), characterized in that: The top of the main body (1) of the power distribution cabinet is fixed with a rain cover (2), and the inside of the rain cover (2) is rotatably connected with a rotating shaft (3). The rotating shaft (3) passes through the main body (1) of the power distribution cabinet and is rotatably connected to the main body (1). A double-layer card plate (301) is fixed on the surface of the rotating shaft (3). A driven fan blade (31) is fixed on the top of the rotating shaft (3). A threaded sleeve (32) is threadedly connected to the bottom end of the rotating shaft (3). The bottom of the threaded sleeve (32) is fixed with a frame (33), a temperature sensor (34) is fixed on one side of the frame (33), an inner box (35) is fixed inside the frame (33), a nozzle (36) is fixed on one side of the inner box (35), the nozzle (36) passes through the frame (33), a first spring (37) is fixed on one side of the inner wall of the inner box (35), a push plate (38) is fixed at one end of the first spring (37), the push plate (38) is slidably sealed to the inner wall of the inner box (35), and a feed port (39) is opened on the side of the frame (33) near the nozzle (36), the feed port (39) is connected to the inner box (35); The rain shelter (2) has a motor (4) fixed inside. The output shaft of the motor (4) is fixed with an active fan blade (41). The surface of the active fan blade (41) is connected to a belt (42). The rotating shaft (3) is connected to the belt (42) and the belt (42) is located in the middle of the double-layer card plate (301).

2. The monitoring device for a power distribution cabinet according to claim 1, characterized in that: The main body (1) of the power distribution cabinet is hinged with a cabinet door (11), ventilation slots (12) are provided on both sides of the main body (1), electrical components (13) are fixed on the inner wall of the main body (1), and an exhaust port (14) is provided at the bottom of the main body (1).

3. The monitoring device for a power distribution cabinet according to claim 1, characterized in that: A stand (21) is fixed to one side of the top of the rain shelter (2), and a baffle (22) is fixed to the top of the stand (21).

4. The monitoring device for a power distribution cabinet according to claim 2, characterized in that: The bottom of the main body (1) of the power distribution cabinet is fixed with a base (5). The base (5) has a first air duct (51) on the side near the cabinet door (11), a second air duct (52) on the side near the ventilation slot (12), and a connecting slot (53) on the top of the base (5). The connecting slot (53) is aligned with the discharge port (14).

5. The monitoring device for a power distribution cabinet according to claim 4, characterized in that: The base (5) is slidably connected to a fixing frame (6), and the fixing frame (6) has four mating interfaces (61) on its surface. A sliding door (62) is hinged to the side of the fixing frame (6) away from the cabinet door (11), and the four mating interfaces (61) are respectively aligned with the two ends of the first air duct (51) and the second air duct (52).

6. The monitoring device for a power distribution cabinet according to claim 5, characterized in that: A cylinder (7) is fixed at the middle position of the bottom of the inner cavity of the fixed frame (6). The output shaft of the cylinder (7) is fixed to the bottom of the base (5). A second spring (71) is fixed at the bottom of the inner cavity of the fixed frame (6). A movable frame (72) is fixed at the top of the second spring (71). There are four movable frames (72), and the four movable frames (72) are slidably connected to the two ends of the first air duct (51) and the second air duct (52) respectively.

7. The monitoring device for a power distribution cabinet according to claim 4, characterized in that: A side frame (8) is fixed on the top of the base (5) near the ventilation slot (12). A secondary air slot (81) is opened on the surface of the side frame (8). The secondary air slot (81) is aligned with the ventilation slot (12). There are two side frames (8), which correspond to the two ventilation slots (12) respectively. A T-shaped frame (82) is fixed on the top of the base (5) away from the cabinet door (11).

8. The monitoring device for a power distribution cabinet according to claim 1, characterized in that: A water collection chamber (9) is provided on one side of the top of the rain shelter (2). A rain sensor (91) is fixed on the inner wall of the water collection chamber (9). A flow guide box (92) is fixed inside the main body (1) of the power distribution cabinet. A slide rod (93) is slidably and sealed inside the flow guide box (92). The slide rod (93) is slidably and sealed to the water collection chamber (9). A limit sealing plate (94) is fixed on the top of the slide rod (93). A water inlet hole (95) and a water outlet hole (96) are respectively provided on the surface of the slide rod (93).

9. The monitoring device for a power distribution cabinet according to claim 8, characterized in that: When the slide bar (93) is not pushed out, the water inlet (95) is blocked by the inner wall of the water collection cavity (9). The water outlet (96) has two layers, one inside the guide box (92) and the other outside the guide box (92).

Images