Power distribution network protection device for power system
By designing a distribution network protection device with temperature and humidity sensors, air injection components, cleaning components and ventilation components, the shortcomings of existing devices in terms of heat dissipation and dust prevention are solved, and the automation effects of moisture prevention, ventilation and filter cleaning are achieved.
Patent Information
- Application Number
- CN202411823146.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-03-14
AI Technical Summary
The existing distribution network protection devices can easily cause the dustproof grille to be blocked during the heat dissipation process, affecting the heat dissipation effect, and the air inlet and air outlet can easily cause moisture inside the protective box.
A distribution network protection device for power systems is designed, including a box and a mobile component. The box is equipped with temperature and humidity sensors, air injection components, cleaning components and ventilation components. Through the coordinated work of these components, automatic moisture-proof, ventilation and filter cleaning are achieved.
It effectively avoids moisture inside the box and prevents the heat dissipation port from being blocked, ensuring the normal heat dissipation and dustproof effect of the device.
Smart Images
Figure CN119627678A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of power systems, and in particular to a distribution network protection device for a power system. Background Art
[0002] The distribution network refers to the power grid that receives electric energy from the transmission network or regional power plant, and distributes it locally or step by step according to the voltage to various users through distribution facilities. It is composed of overhead lines, cables, towers, distribution transformers, disconnectors, reactive power compensators and some ancillary facilities. It plays an important role in distributing electric energy in the power grid. Generally, the part used for the connection of the distribution network and the distribution terminals required by the distribution network are installed in the protection box for protection, so as to achieve the protection effect and avoid direct exposure to the air, because various external factors may cause damage to it. The existing distribution network protection box needs to use air inlets and outlets when dissipating heat. In order to ensure the dust-proof effect, dust-proof grilles are installed at the air inlets and outlets. However, dust is easy to adhere to the dust-proof grilles after the device is used many times, causing the dust-proof grilles to be blocked, thereby affecting the heat dissipation effect of the device. At the same time, since the air inlet and outlet are directly connected to the outside, it is easy for the inside of the protection box to get damp. For this reason, we propose a distribution network protection device for power systems. Summary of the invention
[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a distribution network protection device for an electric power system, which can avoid moisture and blockage of the heat dissipation port, and can effectively solve the problems in the background technology.
[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a distribution network protection device for a power system, comprising a box and a mobile component; Box body: Two corresponding heat dissipation ports are provided on the left and right sides, a filter is provided inside the heat dissipation port, a mounting grille is fixed on the rear side of the box body, a temperature and humidity sensor is installed on the rear side of the box body, an air injection component is installed on the rear side of the box body, a base is fixed on the lower side of the box body, a drying component is installed on the upper side of the base, a ventilation component and an air outlet component are installed on the right side of the box body, the ventilation component and the air outlet component are connected, a blocking component is installed on the lower side of the box body, and the temperature and humidity sensor is bidirectionally electrically connected to the external PLC controller; The movable assembly comprises a U-shaped slide, a U-shaped slider, a threaded rod, a limit rod and a motor, wherein a U-shaped slide is provided inside the box wall, and two filter screens are respectively fixed at the left and right ends inside the U-shaped slide, and the inside of the U-shaped slide is slidably connected with the U-shaped slider, and two corresponding mounting grooves are provided at the left and right ends on the lower side of the U-shaped slider, and the filter screen is located inside the mounting groove, and a threaded hole is provided at the left end of the upper side of the U-shaped slider, and a threaded rod is connected to the internal thread of the threaded hole, and the threaded rod is rotatably connected to the inside of the U-shaped slide, and a limiting hole is provided at the right end of the upper side of the U-shaped slider, and the limiting rod is slidably connected to the internal limit rod of the limiting hole, and the limiting rod is fixed inside the U-shaped slide, and a motor is installed on the upper side of the box, and the output shaft of the motor is fixed on the upper end of the threaded rod, and a cleaning assembly is installed inside the mounting groove, and the lower end of the cleaning assembly is connected to the blocking assembly, and the input end of the motor is electrically connected to the output end of an external PLC controller, and the cleaning assembly is driven to move by setting a movable assembly.
[0005] Furthermore, the gas injection assembly includes a connecting hose, a connecting pipe and an air pump. Two corresponding openings are opened on the upper side of the box body, and connecting hoses are arranged inside the two openings. Two corresponding gas injection holes are opened on the upper side of the U-shaped slider, and the two gas injection holes are respectively communicated with two mounting grooves opened at the left and right ends of the lower side of the U-shaped slider. The two ends of the connecting hose are respectively fixed inside the two gas injection holes. An air pump is installed on the rear side of the box body. A connecting pipe is fixed inside the air outlet of the air pump. The upper end of the connecting pipe is fixed on the circumferential surface of the connecting hose. The connecting hose and the connecting pipe are communicated. The input end of the air pump is electrically connected to the output end of an external PLC controller. The compressed air is injected into the two mounting grooves opened at the left and right ends of the lower side of the U-shaped slider by setting the gas injection assembly.
[0006] Furthermore, the cleaning component includes bristles, a fixing strip and an extrusion strip. Four corresponding fixing strips are fixed inside the two mounting grooves opened on the lower side of the U-shaped slider. The filter screen is located between the two fixing strips. Evenly distributed bristles are fixed on the sides of the fixing strips. All the bristles are respectively fitted with the left and right sides of the two filter screens. An extrusion strip is fixed at the lower end of the mounting groove. The filter screen is cleaned by setting the cleaning component.
[0007] Furthermore, the blocking assembly includes a rotating shaft, a blocking bar, a fixed disk and a torsion spring, two corresponding grooves are provided on the lower side of the box body, connecting holes are provided inside the grooves, a rotating shaft is rotatably connected inside the connecting hole, a blocking bar is fixed on the circumferential surface of the rotating shaft, the extrusion bar is fitted with the side of the blocking bar, two corresponding fixed disks are fixed on the front and rear ends of the rotating shaft, two corresponding torsion springs are sleeved on the circumferential surface of the rotating shaft, one end of the torsion spring is fixed on the end surface of the fixed disk, and the other end of the torsion spring is fixed on the side of the box body, and the U-shaped slide groove is sealed by setting the blocking assembly.
[0008] Furthermore, the ventilation component includes a mounting barrel and a ventilation fan. The mounting barrel is fixed on the right side of the inside of the box. The mounting barrel corresponds to the heat dissipation port opened on the right side of the box. The ventilation fan is installed inside the mounting barrel. The input end of the ventilation fan is electrically connected to the output end of an external PLC controller. The interior of the box is ventilated by setting the ventilation component.
[0009] Furthermore, the air outlet assembly includes a T-shaped air injection pipe, a connecting barrel and a nozzle. An air outlet hole is opened at the upper end of the circumferential surface of the mounting barrel, a T-shaped air injection pipe is fixed inside the air outlet hole, two corresponding connecting barrels are fixed at the front and rear ends of the T-shaped air injection pipe, the T-shaped air injection pipe is connected to the inner cavities of the two connecting barrels, and evenly distributed exhaust ports are opened at the left end of the circumferential surface of the connecting barrel. Evenly distributed nozzles are installed inside the exhaust ports. By setting the air outlet assembly, compressed air is evenly injected into the interior of the box.
[0010] Furthermore, the drying component includes a barrier mesh plate and activated carbon. The mesh plate is fixed to the left end of the upper side of the base. Activated carbon is placed in the gap between the mesh plate and the left wall of the box body. By setting up the drying component, the dryness of the inside of the box body can be effectively ensured.
[0011] Furthermore, a mounting frame is fixed to the lower side of the base, and four corresponding mounting holes are opened on the edge of the mounting frame. The base is fixed by providing the mounting frame and the mounting holes.
[0012] Furthermore, a baffle is hinged on the front side of the box body, an observation port is opened on the front side of the baffle, a transparent plate is fixed inside the observation port, a handle is fixed on the front side of the baffle, and the box body is sealed by setting the baffle.
[0013] Furthermore, two corresponding connecting strips are fixed on the left and right sides of the box body, and evenly distributed oblique guide plates are fixed between the two connecting strips. All the oblique guide plates correspond to the two heat dissipation ports opened on the left and right sides of the box body respectively. The oblique guide plates are provided to prevent rainwater from entering the interior of the heat dissipation ports.
[0014] Compared with the prior art, the beneficial effects of the present invention are: the distribution network protection device for the power system has the following advantages: 1. By setting the moving components, the U-shaped slider will seal the two heat dissipation holes on the left and right sides of the box under normal circumstances. In this case, the activated carbon can be used to prevent the inside of the box from getting damp; 2. The temperature and humidity inside the box are detected by setting temperature and humidity sensors. When the temperature and humidity are too high, the external PLC controller will automatically control the motor to rotate the threaded rod to drive the U-shaped slider to move upward and separate from the two heat dissipation holes on the left and right sides of the box. After separation, the external PLC controller will automatically control the ventilation fan to draw external air into the installation barrel, and then inject it into the two connected barrels through the T-shaped air injection pipe, and then inject it into the box through evenly distributed nozzles. In this case, the inside of the box can be ventilated, and the temperature and humidity inside the box can be reduced after ventilation; 3. By setting up the cleaning component, after the internal temperature and humidity of the box body are restored to the appropriate temperature, the external PLC controller will automatically control the motor to rotate, and the motor will rotate to move the U-shaped slider downward. The downward movement of the U-shaped slider drives all the bristles to move downward to clean the two filters. When the U-shaped slider moves downward to the bottom of the U-shaped slide, the extrusion bar will squeeze the blocking bar, and the blocking bar will tilt after squeezing. After tilting, the air pump will start to inject compressed air into the interior of the connecting hose. The compressed air entering the connecting hose will spray onto the two filters and all the bristles. In this case, the filter can be further cleaned, and the filter can be prevented from being blocked after cleaning. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the front structure of the present invention; Figure 2 A is an enlarged view of the present invention; Figure 3 This is a schematic diagram of the structure of the mobile assembly of the present invention; Figure 4 It is a schematic diagram of the rear structure of the present invention; Figure 5 It is a front side sectional view of the present invention; Figure 6 It is an enlarged view of B of the present invention; Figure 7 It is a schematic diagram of the structure of the gas outlet component of the present invention.
[0016] In the figure: 1 box body, 2 moving component, 21 U-shaped slide, 22 U-shaped slider, 23 threaded rod, 24 limit rod, 25 motor, 3 air injection component, 31 connecting hose, 32 connecting pipe, 33 air pump, 4 cleaning component, 41 bristles, 42 fixing strip, 43 extrusion strip, 5 blocking component, 51 rotating shaft, 52 blocking strip, 53 fixing plate, 54 torsion spring, 6 ventilation component, 61 installation barrel, 62 ventilation fan, 7 air outlet component, 71 T-shaped air injection pipe, 72 connecting barrel, 73 nozzle, 8 drying component, 81 blocking mesh plate, 82 activated carbon, 9 base, 10 installation frame, 11 installation hole, 12 baffle, 13 handle, 14 transparent plate, 15 installation grille, 16 filter, 17 connecting strip, 18 oblique guide plate, 19 temperature and humidity sensor. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0018] See also Figure 1-7 ,This embodiment provides a technical solution: a distribution network protection device for a power system, comprising a box 1 and a mobile component 2; Box 1: There are two corresponding heat dissipation ports on the left and right sides, and a filter 16 is arranged inside the heat dissipation port. A mounting grille 15 is fixed on the rear side of the box 1. A temperature and humidity sensor 19 is installed on the rear side of the box 1. An air injection component 3 is installed on the rear side of the box 1. A base 9 is fixed on the lower side of the box 1. A drying component 8 is installed on the upper side of the base 9. A ventilation component 6 and an air outlet component 7 are installed on the right side of the box 1. The ventilation component 6 and the air outlet component 7 are connected. A blocking component 5 is installed on the lower side of the box 1. The temperature and humidity sensor 19 is bidirectionally electrically connected to an external PLC controller. The air injection component 3 includes a connecting hose 31, a connecting pipe 32 and an air pump 33. Two corresponding openings are arranged on the upper side of the box 1. The two openings are provided with connecting pipes. The connecting hose 31 and the U-shaped slider 22 have two corresponding air injection holes on their upper sides, and the two air injection holes are respectively connected to the two mounting grooves on the left and right ends of the lower side of the U-shaped slider 22. The two ends of the connecting hose 31 are respectively fixed inside the two air injection holes. An air pump 33 is installed on the rear side of the box body 1. A connecting pipe 32 is fixed inside the air outlet of the air pump 33. The upper end of the connecting pipe 32 is fixed on the circumferential surface of the connecting hose 31. The connecting hose 31 and the connecting pipe 32 are connected. The input end of the air pump 33 is electrically connected to the output end of the external PLC controller. The blocking component 5 includes a rotating shaft 51, a blocking bar 52, a fixing plate 53 and a torsion spring 54. Two corresponding grooves are provided on the lower side of the box body 1. A connecting hole is provided inside the groove. The internal rotation connection of the connecting hole A rotating shaft 51 is connected, a blocking strip 52 is fixed on the circumferential surface of the rotating shaft 51, and the extrusion strip 43 fits with the side of the blocking strip 52. Two corresponding fixing plates 53 are fixed at the front and rear ends of the rotating shaft 51. Two corresponding torsion springs 54 are sleeved on the circumferential surface of the rotating shaft 51. One end of the torsion spring 54 is fixed on the end surface of the fixing plate 53, and the other end of the torsion spring 54 is fixed on the side of the box body 1. The ventilation component 6 includes a mounting barrel 61 and a ventilation fan 62. The mounting barrel 61 is fixed on the right side of the box body 1. The mounting barrel 61 corresponds to the heat dissipation port opened on the right side of the box body 1. The ventilation fan 62 is installed inside the mounting barrel 61. The input end of the ventilation fan 62 is electrically connected to the output end of the external PLC controller. The air outlet component 7 includes a T-shaped air injection pipe 71, connecting barrel 72 and nozzle 73, an air outlet is provided at the upper end of the circumferential surface of the mounting barrel 61, a T-shaped air injection pipe 71 is fixed inside the air outlet, two corresponding connecting barrels 72 are fixed at the front and rear ends of the T-shaped air injection pipe 71, the T-shaped air injection pipe 71 is communicated with the inner cavities of the two connecting barrels 72, an evenly distributed exhaust port is provided at the left end of the circumferential surface of the connecting barrel 72, and evenly distributed nozzles 73 are installed inside the exhaust port, compressed air is evenly injected into the interior of the box body 1 by setting the air outlet component 7, the interior of the box body 1 is ventilated by setting the ventilation component 6, the U-shaped slide groove 21 is sealed by setting the blocking component 5, and the compressed air is injected into the interior of the two mounting grooves opened at the left and right ends of the lower side of the U-shaped slider 22 by setting the air injection component 3; The moving component 2 includes a U-shaped slide 21, a U-shaped slider 22, a threaded rod 23, a limit rod 24 and a motor 25. A U-shaped slide 21 is provided inside the wall of the box body 1. Two filters 16 are respectively fixed at the left and right ends inside the U-shaped slide 21. The U-shaped slide 21 is slidably connected to the inside of the U-shaped slide 21. Two corresponding mounting grooves are provided at the left and right ends of the lower side of the U-shaped slider 22. The filter 16 is located inside the mounting groove. A threaded hole is provided at the left end of the upper side of the U-shaped slider 22. The threaded rod 23 is threadedly connected to the inside of the threaded hole. The threaded rod 23 is rotatably connected to the inside of the U-shaped slide 21. A limit hole is provided at the right end of the upper side of the U-shaped slider 22. The limit rod 24 is slidably connected to the inside of the limit hole. The limit rod 24 is fixed inside the U-shaped slide 21. The upper side of the box body 1 is equipped with an electric motor. The motor 25 has an output shaft fixed on the upper end of the threaded rod 23, a cleaning component 4 is installed inside the mounting groove, the lower end of the cleaning component 4 is connected to the blocking component 5, the input end of the motor 25 is electrically connected to the output end of the external PLC controller, the cleaning component 4 comprises bristles 41, a fixing bar 42 and an extrusion bar 43, four corresponding fixing bars 42 are fixed inside the two mounting grooves opened on the lower side of the U-shaped slider 22, the filter screen 16 is located between the two fixing bars 42, and evenly distributed bristles 41 are fixed on the side of the fixing bar 42, all the bristles 41 are respectively fitted with the left and right sides of the two filter screens 16, and an extrusion bar 43 is fixed at the lower end of the mounting groove, the filter screen 16 is cleaned by setting the cleaning component 4, and the cleaning component 4 is driven to move by setting the moving component 2.
[0019] Wherein: the drying component 8 includes a barrier mesh plate 81 and activated carbon 82, the mesh plate 81 is fixed to the left end of the upper side of the base 9, and the activated carbon 82 is placed in the gap between the mesh plate 81 and the left wall of the box body 1. By setting the drying component 8, the dryness of the inside of the box body 1 can be effectively guaranteed.
[0020] Wherein: a mounting frame 10 is fixed to the lower side of the base 9 , and four corresponding mounting holes 11 are opened on the edge of the mounting frame 10 , and the base 1 is fixed by providing the mounting frame 10 and the mounting holes 11 .
[0021] The front side of the box body 1 is hinged with a baffle 12, the front side of the baffle 12 is provided with an observation port, a transparent plate 14 is fixed inside the observation port, and a handle 13 is fixed on the front side of the baffle 12. The box body 1 is sealed by setting the baffle 12.
[0022] Among them: two corresponding connecting strips 17 are fixed on the left and right sides of the box body 1, and evenly distributed oblique guide plates 18 are fixed between the two connecting strips 17. All the oblique guide plates 18 correspond to the two heat dissipation ports opened on the left and right sides of the box body 1 respectively. The oblique guide plates 18 are provided to prevent rainwater from entering the heat dissipation ports.
[0023] The working principle of a power distribution network protection device provided by the present invention is as follows: during normal use, the equipment required for the power distribution network of the power system can be installed on the front side of the installation grille 15. After installation, during the operation of the equipment, the U-shaped slider 22 will seal the two heat dissipation holes opened on the left and right sides of the box body 1. In this case, the activated carbon 82 can be used to prevent the interior of the box body 1 from getting damp. During normal operation of the equipment, the temperature and humidity sensor 19 detects the temperature and humidity inside the box body 1. When the temperature and humidity are too high, the external PLC controller will automatically control the motor 25 to work so that the threaded rod 23 rotates to drive the U-shaped slider 22 to move upward and separate from the two heat dissipation holes opened on the left and right sides of the box body 1. After separation, the external PLC controller will automatically control the ventilation fan 62 to draw external air into the interior of the installation barrel 61, and then inject it into the interior of the two connecting barrels 72 through the T-shaped air injection pipe 71, and then inject it into the interior of the box body 1 through the evenly distributed nozzles 73. In this case, the interior of the box body 1 can be ventilated, and the temperature and humidity inside the box body 1 can be reduced after ventilation. When the U-shaped slider 22 moves upward, it will drive the two extrusion bars 43 to move upward and separate from the blocking bar 52. After separation, the blocking bar 52 will fit upward with the lower side of the box body 1 under the action of the two torsion springs 54. After fitting, the U-shaped slider 22 can be sealed. After sealing, air leakage can be avoided during ventilation. After the internal temperature and humidity of the box body 1 are restored to a suitable temperature, the external PLC controller will automatically control the motor 25 to rotate, and the motor 25 will rotate to make the U-shaped slider 22 move downward. The U-shaped slider 22 moves downward with All the bristles 41 are moved downward to clean the two filter screens 16. When the U-shaped slider 22 moves downward to the bottom of the U-shaped slide groove 21, the extrusion bar 43 will squeeze the blocking bar 52, and the blocking bar 52 will be tilted after squeezing. After tilting, the air pump 33 is started to inject compressed air into the interior of the connecting hose 31. The compressed air entering the connecting hose 31 will be sprayed onto the two filter screens 16 and all the bristles 41. In this case, the filter screen 16 can be further cleaned, and the filter screen 16 can be prevented from being blocked after cleaning.
[0024] It is worth noting that the external PLC controller disclosed in the above embodiment is specifically a Siemens S7-200 model, the motor 25 can use a 1LE0003 three-phase asynchronous motor, the air pump 33 can use a 12v small air pump, the ventilation fan 62 can use a D2E146 cooling fan, and the temperature and humidity sensor 19 can be freely configured according to the actual application scenario. The external PLC controller controls the motor 25, the air pump 33 and the ventilation fan 62 using methods commonly used in the prior art.
[0025] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A distribution network protection device for a power system, characterized in that: It comprises a box body (1) and a moving component (2); Box body (1): two corresponding heat dissipation ports are provided on the left and right sides, a filter screen (16) is arranged inside the heat dissipation port, a mounting grille (15) is fixed on the rear side of the box body (1), a temperature and humidity sensor (19) is installed on the rear side of the box body (1), an air injection component (3) is installed on the rear side of the box body (1), a base (9) is fixed on the lower side of the box body (1), a drying component (8) is installed on the upper side of the base (9), a ventilation component (6) and an air outlet component (7) are installed on the right side of the box body (1), the ventilation component (6) and the air outlet component (7) are connected, a blocking component (5) is installed on the lower side of the box body (1), and the temperature and humidity sensor (19) is bidirectionally electrically connected to an external PLC controller; The moving assembly (2) comprises a U-shaped slide groove (21), a U-shaped slider (22), a threaded rod (23), a limit rod (24) and a motor (25). The box body (1) has a U-shaped slide groove (21) formed inside the box wall. Two filter screens (16) are respectively fixed at the left and right ends of the U-shaped slide groove (21). The U-shaped slider (22) is slidably connected inside the U-shaped slide groove (21). Two corresponding mounting grooves are formed at the left and right ends of the lower side of the U-shaped slider (22). The filter screen (16) is located inside the mounting groove. A threaded hole is formed at the left end of the upper side of the U-shaped slider (22). The threaded hole is internally threadedly connected to a screw thread. A threaded rod (23) is rotatably connected to the inside of the U-shaped slide groove (21); a limit hole is provided at the right end of the upper side of the U-shaped slide block (22); a limit rod (24) is slidably connected to the inside of the limit hole; the limit rod (24) is fixed to the inside of the U-shaped slide groove (21); a motor (25) is installed on the upper side of the box body (1); the output shaft of the motor (25) is fixed to the upper end of the threaded rod (23); a cleaning component (4) is installed in the installation groove; the lower end of the cleaning component (4) is connected to the blocking component (5); the input end of the motor (25) is electrically connected to the output end of an external PLC controller.
2. A distribution network protection device for a power system according to claim 1, characterized in that: The gas injection assembly (3) comprises a connecting hose (31), a connecting pipe (32) and an air pump (33); two corresponding openings are provided on the upper side of the box body (1); the connecting hoses (31) are arranged inside the two openings; two corresponding gas injection holes are provided on the upper side of the U-shaped slider (22); the two gas injection holes are respectively communicated with two mounting grooves provided at the left and right ends of the lower side of the U-shaped slider (22); the two ends of the connecting hose (31) are respectively fixed inside the two gas injection holes; the air pump (33) is installed on the rear side of the box body (1); the connecting pipe (32) is fixed inside the gas outlet hole of the air pump (33); the upper end of the connecting pipe (32) is fixed on the circumferential surface of the connecting hose (31); the connecting hose (31) and the connecting pipe (32) are communicated; the input end of the air pump (33) is electrically connected to the output end of an external PLC controller.
3. A distribution network protection device for a power system according to claim 1, characterized in that: The cleaning component (4) comprises bristles (41), fixing strips (42) and extrusion strips (43); four corresponding fixing strips (42) are fixed inside two installation grooves opened on the lower side of the U-shaped slider (22); the filter screen (16) is located between the two fixing strips (42); evenly distributed bristles (41) are fixed on the side surfaces of the fixing strips (42); all the bristles (41) are respectively fitted to the left and right sides of the two filter screens (16); and an extrusion strip (43) is fixed at the lower end of the installation groove.
4. A distribution network protection device for a power system according to claim 3, characterized in that: The blocking assembly (5) comprises a rotating shaft (51), a blocking bar (52), a fixed disk (53) and a torsion spring (54); two corresponding grooves are provided on the lower side of the box body (1); a connecting hole is provided inside the groove; the rotating shaft (51) is rotatably connected inside the connecting hole; a blocking bar (52) is fixed on the circumferential surface of the rotating shaft (51); the extrusion bar (43) is in contact with the side surface of the blocking bar (52); two corresponding fixed disks (53) are fixed at the front and rear ends of the rotating shaft (51); two corresponding torsion springs (54) are sleeved on the circumferential surface of the rotating shaft (51); one end of the torsion spring (54) is fixed to the end surface of the fixed disk (53); and the other end of the torsion spring (54) is fixed to the side surface of the box body (1).
5. A distribution network protection device for a power system according to claim 1, characterized in that: The ventilation assembly (6) comprises a mounting barrel (61) and a ventilation fan (62); the mounting barrel (61) is fixed on the right side of the interior of the box (1); the mounting barrel (61) corresponds to a heat dissipation port opened on the right side of the box (1); the ventilation fan (62) is installed inside the mounting barrel (61); the input end of the ventilation fan (62) is electrically connected to the output end of an external PLC controller.
6. A distribution network protection device for a power system according to claim 5, characterized in that: The gas outlet assembly (7) comprises a T-shaped gas injection pipe (71), a connecting barrel (72) and a nozzle (73); a gas outlet hole is provided at the upper end of the circumferential surface of the mounting barrel (61); a T-shaped gas injection pipe (71) is fixed inside the gas outlet hole; two corresponding connecting barrels (72) are fixed at the front and rear ends of the T-shaped gas injection pipe (71); the T-shaped gas injection pipe (71) is in communication with the inner cavities of the two connecting barrels (72); a uniformly distributed exhaust port is provided at the left end of the circumferential surface of the connecting barrel (72); and uniformly distributed nozzles (73) are installed inside the exhaust port.
7. A distribution network protection device for a power system according to claim 1, characterized in that: The drying component (8) comprises a barrier screen (81) and activated carbon (82); the screen (81) is fixed to the left end of the upper side of the base (9); and the activated carbon (82) is placed in the gap between the screen (81) and the left side wall of the box body (1).
8. A distribution network protection device for a power system according to claim 1, characterized in that: A mounting frame (10) is fixed to the lower side of the base (9), and four corresponding mounting holes (11) are provided on the edge of the mounting frame (10).
9. A distribution network protection device for a power system according to claim 1, characterized in that: A baffle (12) is hingedly connected to the front side of the box body (1), an observation port is provided on the front side of the baffle (12), a transparent plate (14) is fixed inside the observation port, and a handle (13) is fixed to the front side of the baffle (12).
10. A distribution network protection device for a power system according to claim 1, characterized in that: Two corresponding connecting strips (17) are fixed on both left and right sides of the box body (1), and evenly distributed oblique guide plates (18) are fixed between the two connecting strips (17), and all the oblique guide plates (18) correspond to the two heat dissipation openings opened on the left and right sides of the box body (1).