A primary and secondary fusion complete ring net box for urban distribution network

Abstract

This invention relates to the field of ring main unit technology, specifically to a primary and secondary integrated ring main unit for urban power distribution networks. The ring main unit includes a protective housing, multiple ring main units fixedly installed within the protective housing, and a fixed air duct frame fixedly connected within the protective housing. Multiple second sleeves are fixedly connected to the inner wall of the fixed air duct frame, and second fixed plates are fixedly connected to the inner walls of the second sleeves. A second rotating rod is rotatably connected to the outer wall of the second fixed plate. An arc-shaped air guide plate drives a first rotating rod to rotate along the inner wall of the fixed frame. During rotation, a torsion spring is actuated. When the contact ball rolls to the lower part of the second contact slope, the torsion spring torsional reset, causing the arc-shaped air guide plate to rotate and reset, resulting in the arc-shaped air guide plate being in a reciprocating up-and-down swinging state. At this time, the airflow guided by the arc-shaped air guide plate blows out in an arc-shaped swinging direction towards the ring main unit, further expanding the air-cooling heat dissipation range.

Description

Technical Field

[0001] This invention relates to the field of ring network box technology, specifically to a primary and secondary integrated ring network box for urban power distribution networks. Background Technology

[0002] The integrated primary and secondary ring main unit for urban power distribution networks is a core set of power distribution equipment adapted to the construction of new smart urban power distribution networks. This ring main unit breaks through the traditional layout mode of separating primary and secondary power distribution equipment. It integrates primary power components such as primary switchgear, transformers, and busbars with secondary intelligent equipment such as feeder automation terminals, monitoring sensors, communication and protection control in a deep integrated design. This greatly simplifies the on-site installation process, reduces external wiring, and effectively reduces the equipment footprint and operation and maintenance costs. It is the mainstream core equipment for urban power distribution network renovation and new construction projects, effectively improving the power supply reliability and intelligent operation and maintenance level of the power distribution network.

[0003] The existing ring main unit's air-cooled heat dissipation structure is rigid and has poor heat dissipation coverage. Currently, most air-cooled heat dissipation components in ring main units are fixed installations, with no adjustable airflow angle or range. They can only dissipate air to a fixed area within the unit, and prolonged high-temperature operation can easily cause overheating and aging of internal transformers, intelligent terminals, and switching components, leading to equipment tripping, abnormal monitoring data, and decreased insulation performance, severely impacting the stability of the power distribution network. Secondly, the ventilation filters in ring main units are prone to dust accumulation and clogging, lacking automated cleaning mechanisms, resulting in high maintenance difficulty and labor costs. To ensure ventilation and heat dissipation while meeting cabinet protection requirements, existing ring main unit ventilation openings are equipped with dust filters. However, with long-term outdoor operation, dust, fluff, and particulate matter in the air easily adhere to and accumulate on the filter surface. Conventional ring main unit filters only have dustproof functions and lack self-cleaning mechanisms; clogged filters directly block ventilation channels, causing a sharp drop in airflow and a continuous deterioration of heat dissipation conditions. The limited heat dissipation and dust removal functions cannot meet the dynamic heat dissipation and dust removal needs of complex operating conditions. The existing ring main unit's air-cooling and filter dust removal are independent passive structures with no linkage or adaptive adjustment capabilities. It cannot adjust the cooling airflow mode and dust removal method according to changes in cabinet layout gaps, equipment heat load, and ambient dust concentration. Summary of the Invention

[0004] The purpose of this invention is to provide a complete set of primary and secondary integrated ring main units for urban power distribution networks, in order to solve the problems mentioned in the background art, which are that the ring main unit can only supply air and dissipate heat in a fixed area of ​​the unit, which can easily cause overheating and aging of internal transformers, intelligent terminals and switching components due to long-term high-temperature operation; the ring main unit ventilation filter is prone to dust accumulation and blockage, lacks an automated dust removal structure, has high maintenance difficulty and labor costs; and conventional ring main unit filters only have dust prevention function and no independent dust removal structure, which directly blocks the ventilation channel after the filter is blocked, resulting in a sharp drop in the ventilation volume inside the unit.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a primary and secondary integrated ring network box for urban power distribution networks, comprising a protective box body, multiple ring network box bodies fixedly installed inside the protective box body, and a fixed air duct frame fixedly connected inside the protective box body. Multiple second sleeves are fixedly connected to the inner wall of the fixed air duct frame, and a second fixed plate is fixedly connected to the inner wall of the second sleeve. A second rotating rod is rotatably connected to the outer wall of the second fixed plate, and a rotating disk is fixedly connected to the end of the second rotating rod. Multiple fixed frames are fixedly connected to the end of the second sleeve, and an arc-shaped air-guiding plate is rotatably installed on the fixed frame. A first sleeve is fixedly connected to the outer wall of the fixed air duct frame, and a first dust filter is fixedly connected to the inner wall of the first sleeve. A drive motor is fixedly installed on the first dust filter, and a drive rod is fixedly connected to the output end of the drive motor.

[0006] Preferably, a first fixing plate is fixedly connected to the inner wall of the fixed air duct frame, the transmission rod is rotatably installed on the inner wall of the first fixing plate, a square groove is provided at the end of the transmission rod, a square transmission rod is slidably connected to the inner wall of the square groove, a return spring is fixedly connected to the inner wall of the square groove, and one end of the return spring is fixedly connected to the end of the square transmission rod.

[0007] Preferably, a second dust filter is fixedly installed on the fixed air duct frame, and a pressing rod is fixedly connected to the end of the square transmission rod. A plurality of evenly distributed cleaning brushes for cleaning the second dust filter are fixedly connected to the outer wall of the pressing rod, and the cleaning brushes are inclined.

[0008] Preferably, the outer wall of the pressing rod is fixedly connected to two first abutting rods, and the end of the first abutting rod is rotatably mounted with an abutting ball. The inner wall of the fixed air duct frame is fixedly connected to a plurality of annularly distributed abutting strips, and the outer wall of the abutting strips is provided with two first abutting inclined surfaces.

[0009] Preferably, a first rotating rod is rotatably connected to the inner wall of the fixed frame, a torsion spring is sleeved on the first rotating rod, one end of the torsion spring is fixedly connected to the inner wall of the fixed frame, and the other end of the torsion spring is fixedly connected to an arc-shaped air guide plate, which is fixedly connected to the first rotating rod.

[0010] Preferably, a second abutment rod is fixedly connected to the outer wall of the arc-shaped air guide plate, and an abutment ball is rotatably installed at the end of the second abutment rod.

[0011] Preferably, the rotating disk has a second contact slope, and the second contact slope has a plurality of evenly distributed annular arc-shaped grooves. The moving trajectory of the contact ball contacts the arc-shaped grooves, and a plurality of third exhaust fan blades are fixedly connected to the outer wall of the second rotating rod.

[0012] Preferably, the outer wall of the transmission rod is fixedly connected with a plurality of annularly distributed first and second induced draft fan blades.

[0013] Preferably, the protective housing has two through slots, the inner contour of which matches the outer contour of the first dust filter and the second dust filter.

[0014] Preferably, a protective door is hinged to the outer wall of the protective enclosure, and a control panel is fixedly installed on the main body of the ring network box.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the arc-shaped air guide plate drives the first rotating rod to rotate along the inner wall of the fixed frame. When rotating, the torsion spring is twisted. When the contact ball rolls to the lower part of the second contact slope, the torsion spring is twisted and reset, causing the arc-shaped air guide plate to rotate and reset, so that the arc-shaped air guide plate is in a state of up and down reciprocating swing. At this time, the airflow guided by the arc-shaped air guide plate blows out in an arc swing shape towards the main body of the ring mesh box, further expanding the air cooling heat dissipation range.

[0016] 2. In this invention, the first abutting rod drives the abutting ball and the pressing rod to move away from the abutting strip. The pressing rod drives the square transmission rod to slide into the square groove. When sliding, the square transmission rod compresses the return spring. When the abutting ball slides out of contact with the abutting strip, the return spring rebounds instantly, driving the square transmission rod, the pressing rod, and the cleaning brush to quickly strike the second dust filter, generating vibration to clean the second dust filter.

[0017] 3. In this invention, the abutting ball will drive the second abutting rod to fall into the arc-shaped groove. At this time, the second abutting rod will drive the arc-shaped air guide plate to move down, and the arc-shaped air guide plate will deflect downward. As the abutting ball continues to roll out of the arc-shaped groove, the arc-shaped air guide plate will deflect upward and reset. Since there are multiple arc-shaped grooves, the arc-shaped air guide plate will vibrate back and forth during the air guiding process, which can shake off the dust that is stuck to itself and prevent the dust from affecting its swing flexibility. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall front cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the overall rear cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the fixed air duct frame and its surrounding structure according to the present invention; Figure 5 This is a schematic diagram of the fixed air duct frame and its surrounding cross-sectional structure according to the present invention; Figure 6This is a schematic diagram of the transmission rod and its surrounding structure according to the present invention; Figure 7 This is a top view sectional view of the fixed air duct frame and its surrounding structure according to the present invention. Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle; Figure 9 This is a schematic diagram of the second sleeve and its surrounding structure according to the present invention; Figure 10 This is a schematic diagram of the cross-sectional structure of the second sleeve and its surrounding area according to the present invention.

[0019] In the attached diagram, the components represented by each number are as follows: 1. Protective housing; 2. Protective door; 3. Ring mesh box body; 4. Control panel; 5. Through slot; 6. First sleeve; 7. First dust filter; 8. Fixed air duct frame; 9. Second dust filter; 10. Second sleeve; 11. Drive motor; 12. Drive rod; 13. First exhaust fan blade; 14. Second exhaust fan blade; 15. First fixing plate; 16. Square drive rod; 17. Square groove; 18. Return spring; 19. Button 20. Pressure bar; 21. Cleaning brush; 22. First contact bar; 23. Contact ball; 24. Contact strip; 25. First contact ramp; 26. Fixing frame; 27. First rotating rod; 28. Torsion spring; 29. ​​Arc-shaped air guide plate; 30. Second contact bar; 31. Contact ball; 32. Second fixing plate; 33. Second rotating rod; 34. Third air guide fan blade; 35. Rotating disk; 36. Second contact ramp; 37. Arc-shaped groove. Detailed Implementation

[0020] 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.

[0021] This invention provides a technical solution: such as Figures 1-10The illustrated urban power distribution network integrated ring network box includes a protective box 1, multiple ring network box bodies 3 fixedly installed inside the protective box 1, and a fixed air duct frame 8 fixedly connected inside the protective box 1. Multiple second sleeves 10 are fixedly connected to the inner wall of the fixed air duct frame 8, and a second fixing plate 31 is fixedly connected to the inner wall of the second sleeve 10. A second rotating rod 32 is rotatably connected to the outer wall of the second fixing plate 31, and a rotating disk 34 is fixedly connected to the end of the second rotating rod 32. Multiple fixing frames 25 are fixedly connected to the end of the second sleeve 10, and an arc-shaped air guide plate 28 is rotatably installed on the fixing frame 25. A first sleeve 6 is fixedly connected to the outer wall of the fixed air duct frame 8, and a first dust filter 7 is fixedly connected to the inner wall of the first sleeve 6. A drive motor 11 is fixedly installed on the first dust filter 7, and a drive rod 12 is fixedly connected to the output end of the drive motor 11. When the drive rod 12 rotates... The second exhaust fan blades 14 rotate, and when the second exhaust fan blades 14 rotate, they blow airflow into the second sleeves 10. After the airflow enters the second sleeves 10, it is blown out through the ends of the second sleeves 10 and blown into the multiple ring network box bodies 3 and the gaps between them. The airflow blown out from the second sleeves 10 is guided by multiple arc-shaped air intake plates 28, making it more concentrated and blown to one place, resulting in better heat dissipation. The arc-shaped air intake plates 28 drive the first rotating rod 26 to rotate along the inner wall of the fixed frame 25. When rotating, the torsion spring 27 is twisted. When the contact ball 30 rolls to the lower part of the second contact slope 35, the torsion spring 27 is twisted and reset, causing the arc-shaped air intake plates 28 to rotate and reset, so that the arc-shaped air intake plates 28 are in a state of up and down reciprocating swing. At this time, the airflow guided by the arc-shaped air intake plates 28 blows out in an arc swing shape towards the ring network box body 3, further expanding the air cooling heat dissipation range.

[0022] A first fixing plate 15 is fixedly connected to the inner wall of the fixed air duct frame 8. A transmission rod 12 is rotatably installed on the inner wall of the first fixing plate 15. A square groove 17 is provided at the end of the transmission rod 12. A square transmission rod 16 is slidably connected to the inner wall of the square groove 17. A return spring 18 is fixedly connected to the inner wall of the square groove 17. One end of the return spring 18 is fixedly connected to the end of the square transmission rod 16.

[0023] A second dust filter 9 is fixedly installed on the fixed air duct frame 8. A pressing rod 19 is fixedly connected to the end of the square transmission rod 16. Multiple evenly distributed cleaning brushes 20 for cleaning the second dust filter 9 are fixedly connected to the outer wall of the pressing rod 19. The cleaning brushes 20 are set at an angle.

[0024] Two first abutment rods 21 are fixedly connected to the outer wall of the pressing rod 19. Abutment balls 22 are rotatably installed at the ends of the first abutment rods 21. Multiple annularly distributed abutment strips 23 are fixedly connected to the inner wall of the fixed air duct frame 8. Two first abutment slopes 24 are opened on the outer wall of the abutment strips 23.

[0025] The inner wall of the fixed frame 25 is rotatably connected to a first rotating rod 26. A torsion spring 27 is sleeved on the first rotating rod 26. One end of the torsion spring 27 is fixedly connected to the inner wall of the fixed frame 25, and the other end of the torsion spring 27 is fixedly connected to an arc-shaped air guide plate 28. The arc-shaped air guide plate 28 is fixedly connected to the first rotating rod 26.

[0026] A second abutment rod 29 is fixedly connected to the outer wall of the arc-shaped air guide plate 28, and an abutment ball 30 is rotatably installed at the end of the second abutment rod 29.

[0027] The rotating disk 34 has a second contact slope 35, and the second contact slope 35 has a plurality of annularly distributed arc-shaped grooves 36. The moving trajectory of the contact ball 30 contacts the arc-shaped grooves 36. A plurality of third exhaust fan blades 33 are fixedly connected to the outer wall of the second rotating rod 32.

[0028] The outer wall of the transmission rod 12 is fixedly connected with multiple annularly distributed first induced draft fan blades 13 and second induced draft fan blades 14.

[0029] The protective housing 1 has two through slots 5, the inner contour of which matches the outer contour of the first dust filter 7 and the second dust filter 9.

[0030] A protective door 2 is hinged to the outer wall of the protective enclosure 1, and a control panel 4 is fixedly installed on the main body 3 of the ring network box.

[0031] Working Principle: When using this integrated primary and secondary distribution network ring network box, during daily operation, the primary equipment inside the box, including the control panel 4, circuit breakers, load switches, busbars, and instrument transformers, operates under constant energization and stability, undertaking the tasks of receiving, distributing, and transferring power from the urban distribution network lines. Under normal operating conditions, the switches remain closed, ensuring continuous power transmission to the area. When multiple distribution network lines switch loads or the ring network switches, the boxes automatically coordinate to complete the ring closing and switching, ensuring uninterrupted power supply to residential areas, commercial areas, and industrial parks.

[0032] The integrated FTU feeder terminal, sensors, protection devices, and communication modules operate synchronously throughout the entire process: real-time acquisition of internal temperature of the enclosure, equipment operating current and voltage, load data, switch status, and line fault signals, uploading all operating data to the power distribution backend system; at the same time, real-time judgment of operating conditions, realizing automatic protection tripping for overcurrent, overload, short circuit, and leakage current, and possessing the ability to accurately locate faults, automatically isolate faults, and self-heal and restore power to non-faulty areas.

[0033] During the long-term continuous operation of the ring main body 3, the internal switches, transformers, and intelligent terminals continuously generate heat, requiring heat dissipation through natural ventilation and fixed air cooling. Fixed air cooling requires starting the drive motor 11. After the drive motor 11 starts, it drives the drive rod 12 at the output end to rotate. When the drive rod 12 rotates, it drives multiple second exhaust fan blades 14 to rotate. When the second exhaust fan blades 14 rotate, they blow air into multiple second sleeves 10. After the air enters the second sleeves 10, it is blown out through the ends of the second sleeves 10 and blown into multiple ring main bodies 3 and the gaps between them. The air blown out from the second sleeves 10 will be guided by multiple arc-shaped exhaust plates 28, making it more concentrated and blown to one place, resulting in better heat dissipation.

[0034] After the airflow enters the second sleeve 10, the airflow blows towards the third exhaust fan blade 33, causing the third exhaust fan blade 33 to rotate under force. The third exhaust fan blade 33 drives the second rotating rod 32 and the rotating disk 34 to rotate. As the rotating disk 34 rotates, multiple abutting balls 30 roll up along the second abutting inclined surface 35 to a higher position, causing the abutting balls 30 and the second abutting rod 29 to be forced to drive the arc-shaped air-guiding plate 28 to be forced upward, causing the arc-shaped air-guiding plate 28 to drive the first rotating rod 26 to rotate along the inner wall of the fixed frame 25. During rotation, the torsion spring 27 is twisted. When the abutting balls 30 roll to the lower position of the second abutting inclined surface 35, the torsion spring 27 is twisted back to its original position, causing the arc-shaped air-guiding plate 28 to rotate back to its original position, so that the arc-shaped air-guiding plate 28 is in a state of up-and-down reciprocating swing. At this time, the airflow guided by the arc-shaped air-guiding plate 28 blows out in an arc-shaped swing towards the ring mesh box body 3, further expanding the air-cooling heat dissipation range.

[0035] As the contact ball 30 rolls along the circumference of the second contact slope 35, it will contact multiple arc-shaped grooves 36 on the second contact slope 35. At this time, the contact ball 30 will drive the second contact rod 29 to fall into the arc-shaped groove 36. The second contact rod 29 will then drive the arc-shaped air guide plate 28 to move downward. The arc-shaped air guide plate 28 will deflect downward. As the contact ball 30 continues to roll out of the arc-shaped groove 36, the arc-shaped air guide plate 28 will deflect upward and reset. Since there are multiple arc-shaped grooves 36, the arc-shaped air guide plate 28 will vibrate back and forth during the air guiding process, which can shake off the dust adhering to itself and prevent the dust from affecting its swing flexibility.

[0036] When the transmission rod 12 rotates, it drives multiple first exhaust fan blades 13 to rotate. The rotation of the first exhaust fan blades 13 can introduce outside air into the first sleeve 6 from the first dust filter 7 and blow it towards the second exhaust fan blades 14 and the second dust filter 9. When the transmission rod 12 rotates, it drives the square transmission rod 16 to rotate. When the square transmission rod 16 rotates, it drives the pressing rod 19 and the cleaning brush 20 to rotate. The cleaning brush 20 rotates and scrapes the dust off the second dust filter 9. When the pressing rod 19 rotates, it drives the first contact rod 21 and the contact ball 22 to move circumferentially. The contact ball 22 rolls along the inner wall of the fixed air duct frame 8, and its rolling trajectory is in contact with the contact strip 23. When contact occurs, the contact ball 22 rolls along the first contact slope 24 until it reaches the highest point of the contact strip 23. At this time, the first contact rod 21 drives the contact ball 22 and the pressing rod 19 to move away from the contact strip 23. The pressing rod 19 drives the square transmission rod 16 to slide into the square groove 17. When sliding, the square transmission rod 16 compresses the return spring 18. When the contact ball 22 slides out of contact with the contact strip 23, the return spring 18 rebounds instantly, driving the square transmission rod 16, the pressing rod 19, and the cleaning brush 20 to quickly strike the second dust filter 9, causing the second dust filter 9 to vibrate and clean.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0038] 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 primary and secondary integrated ring network box for urban power distribution networks, comprising a protective box (1), multiple ring network box bodies (3) fixedly installed inside the protective box (1), and a fixed air duct frame (8) fixedly connected inside the protective box (1), characterized in that: The inner wall of the fixed air duct frame (8) is fixedly connected to a plurality of second sleeves (10), the inner wall of the second sleeves (10) is fixedly connected to a second fixed plate (31), the outer wall of the second fixed plate (31) is rotatably connected to a second rotating rod (32), the end of the second rotating rod (32) is fixedly connected to a rotating disk (34), the end of the second sleeve (10) is fixedly connected to a plurality of fixed frames (25), an arc-shaped air guide plate (28) is rotatably installed on the fixed frame (25), the outer wall of the fixed air duct frame (8) is fixedly connected to a first sleeve (6), the inner wall of the first sleeve (6) is fixedly connected to a first dust filter (7), a drive motor (11) is fixedly installed on the first dust filter (7), and the output end of the drive motor (11) is fixedly connected to a drive rod (12).

2. The integrated primary and secondary ring network box for urban power distribution networks according to claim 1, characterized in that: The inner wall of the fixed air duct frame (8) is fixedly connected to a first fixed plate (15). The transmission rod (12) is rotatably installed on the inner wall of the first fixed plate (15). A square groove (17) is provided at the end of the transmission rod (12). A square transmission rod (16) is slidably connected to the inner wall of the square groove (17). A return spring (18) is fixedly connected to the inner wall of the square groove (17). One end of the return spring (18) is fixedly connected to the end of the square transmission rod (16).

3. The integrated primary and secondary ring network box for urban power distribution networks according to claim 2, characterized in that: A second dust filter (9) is fixedly installed on the fixed air duct frame (8). A pressing rod (19) is fixedly connected to the end of the square transmission rod (16). A plurality of evenly distributed cleaning brushes (20) for cleaning the second dust filter (9) are fixedly connected to the outer wall of the pressing rod (19). The cleaning brushes (20) are inclined.

4. A primary and secondary integrated ring network box for urban power distribution networks according to claim 3, characterized in that: Two first abutment rods (21) are fixedly connected to the outer wall of the pressing rod (19). An abutment ball (22) is rotatably installed at the end of the first abutment rod (21). A plurality of annularly distributed abutment strips (23) are fixedly connected to the inner wall of the fixed air duct frame (8). Two first abutment inclined surfaces (24) are opened on the outer wall of the abutment strips (23).

5. A primary and secondary integrated ring network box for urban power distribution networks according to claim 1, characterized in that: The inner wall of the fixed frame (25) is rotatably connected to a first rotating rod (26), and a torsion spring (27) is sleeved on the first rotating rod (26). One end of the torsion spring (27) is fixedly connected to the inner wall of the fixed frame (25), and the other end of the torsion spring (27) is fixedly connected to an arc-shaped air guide plate (28). The arc-shaped air guide plate (28) is fixedly connected to the first rotating rod (26).

6. A primary and secondary integrated ring network box for urban power distribution networks according to claim 5, characterized in that: The outer wall of the arc-shaped air guide plate (28) is fixedly connected to a second abutment rod (29), and an abutment ball (30) is rotatably installed at the end of the second abutment rod (29).

7. A primary and secondary integrated ring network box for urban power distribution networks according to claim 6, characterized in that: The rotating disk (34) has a second contact slope (35), and the second contact slope (35) has a plurality of annularly distributed arc-shaped grooves (36). The moving trajectory of the contact ball (30) is in contact with the arc-shaped grooves (36). The outer wall of the second rotating rod (32) is fixedly connected with a plurality of third exhaust fan blades (33).

8. A primary and secondary integrated ring network box for urban power distribution networks according to claim 1, characterized in that: The outer wall of the transmission rod (12) is fixedly connected with a plurality of annularly distributed first induced draft fan blades (13) and second induced draft fan blades (14).

9. A primary and secondary integrated ring network box for urban power distribution networks according to claim 1, characterized in that: The protective housing (1) has two through slots (5), the inner contour of which matches the outer contour of the first dust filter (7) and the second dust filter (9).

10. A primary and secondary integrated ring network box for urban power distribution networks according to claim 1, characterized in that: The outer wall of the protective box (1) is hinged with a protective door (2), and the main body of the ring network box (3) is fixedly installed with a control panel (4).

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