A ring main unit with convenient operation mechanism maintenance

Abstract

The application discloses a ring main unit with convenient maintenance of an operating mechanism, which comprises a cabinet body, an operating mechanism, a control panel and a fire extinguishing gas cylinder, an electric telescopic rod is fixedly installed on the inner left wall of the cabinet body, an installation plate is arranged on the inner left side of the cabinet body, an installation truss is arranged below the limiting groove, a circulating water pump is arranged on the left side of the cabinet body, a concrete leveling plate is arranged below the water tank, the water tank is buried underground, the low temperature of underground soil is utilized to keep the water in the water tank in a low temperature state all the time, a separate cooling device is not needed, the cabinet body is conveniently subjected to heat dissipation treatment, the components blocked by the supporting plate in the operating mechanism are conveniently viewed through the movement of the first camera, the fault occurrence position of the operating mechanism is quickly known, the operating mechanism is conveniently maintained, the mobile spray pipe is used for accurate fire extinguishing, and the hose for conveying heptafluoro-propane is conveniently stored when the mobile spray pipe is moved.

Description

Technical Field

[0001] This invention relates to the field of ring main unit technology, specifically to a ring main unit with an operating mechanism that facilitates maintenance. Background Technology

[0002] Ring main units are ideal products for the renovation of urban and rural power distribution lines and the construction of power distribution network automation. They are widely used in substations and box-type substations in load centers such as residential communities, industrial and mining enterprises, and high-rise buildings. They are characterized by simple structure, reliable performance, and maintenance-free operation. The operating mechanism is an important component inside the ring main unit. The internal parts of the operating mechanism are mounted on the support plate. Extending the service life of the operating mechanism can extend the service life of the ring main unit.

[0003] Chinese invention patent CN104577743B discloses a ring main unit and its operating mechanism. The operating mechanism includes an input module, a control module, and an output module that cooperate with each other. The control module includes a CPLD-based controller for implementing predefined control logic, having multiple input ports for connecting to the input module and multiple output ports for connecting to the output module; an input isolation unit disposed between the input ports of the controller and the input module; a drive unit controlled by the controller for driving the output module; and an output isolation unit disposed between the output ports of the controller and the drive unit. Compared with the prior art, this invention has the following technical advantages: the operating mechanism operates quickly, has a long lifespan, and high reliability.

[0004] Chinese invention patent CN112670878B discloses a ring main unit (RMN) tooling gas box, including a box body and a cover plate. One side of the box body has an inlet / outlet for the passage of internal components of the RMN gas box, facilitating the assembly and disassembly of these components. The cover plate is detachably fixed to the box body. The inlet / outlet allows the internal components of the RMN gas box to pass through, enabling assembly and disassembly. The cover plate is detachably connected to the box body; when the cover plate is installed, a sealed space is formed inside the box, which can be used to simulate the test environment. After the test, the cover plate can be removed to disassemble and install the internal components of the RMN gas box. In summary, this RMN tooling gas box allows for rapid assembly and disassembly and reuse, thus solving the problems of high cost and low efficiency in the preliminary testing phase of RMN development.

[0005] However, existing ring main units have the following problems:

[0006] 1. As can be seen from the Chinese invention patent with authorization announcement number CN107316775B, which discloses an incoming spring operating mechanism for a ring main unit, each component is mounted on a support plate. When it is necessary to inspect the operating mechanism, the fault location cannot be quickly identified due to the obstruction of the support plate, thus making it inconvenient to quickly inspect the operating mechanism.

[0007] 2. To prevent dust from entering the cabinet, some cabinets use water cooling for heat dissipation, but this requires cooling equipment to lower the water temperature, increasing operating costs. Therefore, we propose a ring main unit with an easy-to-maintain operating mechanism to solve the problems mentioned above. Summary of the Invention

[0008] The purpose of this invention is to provide a ring main unit with an operating mechanism that is easy to maintain. The water tank is buried underground, and the low temperature of the underground soil keeps the water in the tank at a constant low temperature, eliminating the need for a separate cooling device and facilitating heat dissipation of the cabinet. The movement of the first camera allows for easy viewing of components inside the operating mechanism that are blocked by the support plate, enabling quick identification of the location of any malfunction and facilitating maintenance of the operating mechanism. The movable spray pipe allows for precise fire extinguishing, and the flexible hose for delivering heptafluoropropane can be easily stored while the spray pipe is being moved.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a ring main unit with an easily maintainable operating mechanism, comprising a cabinet, an operating mechanism, a control panel, and a fire extinguishing gas cylinder.

[0010] An electric telescopic rod is fixedly installed on the inner left wall of the cabinet. An installation plate is provided on the inner left side of the cabinet. A limiting groove is opened at the outer end of the installation plate. A first motor is fixed at both the upper and lower ends of the right side of the installation plate. A winding roller is fixed at the output end of the first motor. A connecting rope is coiled around the outer side of the winding roller. A first camera is fixed on the connecting rope.

[0011] The operating mechanism is installed on the right side of the mounting plate, a mounting truss is provided below the limiting groove, and a circulating water pump is provided on the left side of the cabinet.

[0012] The water tank is buried underground, and corrosion-resistant heat dissipation fins are fixed at equal intervals on the outer side of the water tank. A concrete leveling plate is set below the water tank.

[0013] The cabinet has a door hinged to the right end, a control panel fixed to the right side of the door, a fire extinguishing gas cylinder fixed to the left side of the door via a rod, and a mounting box fixed to the left side of the door. A second motor is fixed to the bottom of the mounting box, and a lead screw is fixed to the output end of the second motor. A moving plate is threaded to the outer end of the lead screw, and a spray pipe is fixed to the left side of the moving plate. Nozzles are fixed at equal intervals to the left end of the spray pipe. A first bevel gear is fixed to the upper surface of the lead screw, and a second bevel gear is meshed to the left end of the first bevel gear. A collection roller is fixed to the left side of the second bevel gear, and a flexible hose is coiled around the outer side of the collection roller. Moisture-proof boxes are provided on both the front and back sides of the mounting box. A second camera is fixed to the top of the door, and a smoke detector is installed at the bottom of the cabinet.

[0014] By adopting the above technical solution, the water tank is buried underground, and the low temperature of the underground soil keeps the water in the tank at a constant low temperature. There is no need to connect a separate cooling device, which facilitates heat dissipation of the cabinet. The movement of the first camera makes it easy to view the components inside the operating mechanism that are blocked by the support plate, quickly identify the location of the fault in the operating mechanism, and facilitate the repair of the operating mechanism. The fire can be extinguished precisely by moving the spray pipe, and the hose for delivering heptafluoropropane can be easily stored when the spray pipe is moved.

[0015] As a preferred embodiment of the present invention, the operating mechanism is provided with a support plate inside, and the first camera is located on the right side of the support plate inside the operating mechanism.

[0016] By adopting the above technical solution, the first camera monitors the components inside the operating mechanism that are blocked by the support plate.

[0017] As a preferred technical solution of the present invention, the first camera forms a lifting structure with the operating mechanism through a connecting rope and a winding roller.

[0018] By adopting the above technical solution, the lifting and lowering of the first camera facilitates comprehensive monitoring of all parts of the operating mechanism.

[0019] As a preferred embodiment of the present invention, the upper and lower ends of the mounting plate are both fitted with the output ends of the electric telescopic rod.

[0020] By adopting the above technical solution, the mounting plate is installed inside the cabinet via an electric telescopic rod.

[0021] As a preferred embodiment of the present invention, the cabinet has a hollow interior and is connected to the water tank via a pipe.

[0022] By adopting the above technical solution, the cabinet has a hollow structure inside, which allows cold water to flow inside the hollow cabinet.

[0023] As a preferred embodiment of the present invention, the electric telescopic rod, the first motor, the first camera, the second motor, and the control panel are all electrically connected to the control panel.

[0024] By adopting the above technical solution, the electric telescopic pole, the first motor, the first camera, and the second motor can be controlled via a control panel.

[0025] As a preferred embodiment of the present invention, the right end of the fire extinguishing gas cylinder is connected to a flexible hose, and the bottom end of the flexible hose is fixedly connected to the spray pipe.

[0026] By adopting the above technical solution, fire extinguishing gas inside the fire extinguishing gas cylinder is delivered using a flexible hose.

[0027] As a preferred embodiment of the present invention, the lead screw, the moving plate, the first bevel gear, the second bevel gear, and the receiving roller constitute a linkage mechanism.

[0028] By adopting the above technical solution, the rotation of the lead screw drives the rotation of the storage roller, which facilitates the storage of the hose.

[0029] Compared with the prior art, the beneficial effects of the present invention are: the operating mechanism of the ring network cabinet is easy to maintain, the water tank is buried underground, and the low temperature of the underground soil keeps the water in the tank at a low temperature, without the need for a separate cooling device, which facilitates heat dissipation of the cabinet. The movement of the first camera makes it easy to view the components inside the operating mechanism that are blocked by the support plate, quickly identify the location of the fault in the operating mechanism, and facilitate the maintenance of the operating mechanism. The moving spray pipe can accurately extinguish fires, and when the spray pipe is moved, it is convenient to store the hose for delivering heptafluoropropane.

[0030] 1. It is equipped with a cabinet and a water tank. The cabinet has a hollow structure. Under the action of the circulating water pump, the low temperature water in the water tank circulates inside the cabinet, reducing the temperature of the electrical components inside the cabinet. Since the water tank is buried underground and the underground is always kept at a low temperature, the temperature of the water inside the water tank is always kept low, which makes it easier to reduce the temperature of the water inside the water tank.

[0031] 2. It is equipped with a take-up roller, a connecting rope, and a first camera. The rotation of the take-up roller winds up the connecting rope, thereby raising and lowering the first camera mounted on the connecting rope. The first camera monitors the components inside the operating mechanism that are blocked by the support plate, which makes it easy to quickly identify the location of the fault in the components inside the operating mechanism and quickly repair the operating mechanism.

[0032] 3. Equipped with a lead screw, a first bevel gear, a second bevel gear, and a collecting roller, in the event of a fire, the rotation of the lead screw drives the spray pipe and nozzle to move to the location of the fire. At the same time, the first and second bevel gears drive the collecting roller to rotate, and the rotation of the collecting roller allows for the retraction and extension of the hose, facilitating the retraction of the hose during the movement of the spray pipe. Attached Figure Description

[0033] Figure 1 This is a frontal cross-sectional view of the present invention;

[0034] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0035] Figure 3 This is a schematic diagram of the side view of the cabinet door structure of the present invention;

[0036] Figure 4 This is a side view sectional view of the present invention;

[0037] Figure 5 This is a schematic diagram of the overall structure of the cabinet of the present invention;

[0038] Figure 6 This is a schematic diagram of the overall structure of the connection between the moving plate and the injection pipe of the present invention.

[0039] In the diagram: 1. Cabinet; 2. Electric telescopic rod; 3. Mounting plate; 4. Limiting groove; 5. First motor; 6. Rewinding roller; 7. Connecting rope; 8. First camera; 9. Operating mechanism; 10. Mounting truss; 11. Circulating water pump; 12. Water tank; 13. Corrosion-resistant heat sink; 14. Concrete leveling plate; 15. Cabinet door; 16. Control panel; 17. Fire extinguishing gas cylinder; 18. Mounting box; 19. Second motor; 20. Lead screw; 21. Moving plate; 22. Spray pipe; 23. Nozzle; 24. First bevel gear; 25. Second bevel gear; 26. Hose; 27. Moisture-proof box; 28. Rewinding roller; 29. ​​Second camera; 30. Smoke alarm. Detailed Implementation

[0040] 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.

[0041] Please see Figure 1-6This invention provides a technical solution: a ring main unit with an easily maintainable operating mechanism, comprising a cabinet body 1, an electric telescopic rod 2, a mounting plate 3, a limiting groove 4, a first motor 5, a winding roller 6, a connecting rope 7, a first camera 8, an operating mechanism 9, a mounting truss 10, a circulating water pump 11, a water tank 12, corrosion-resistant heat sinks 13, a concrete leveling plate 14, a cabinet door 15, a control panel 16, a fire extinguishing gas cylinder 17, a mounting box 18, a second motor 19, a lead screw 20, a moving plate 21, a spray pipe 22, a nozzle 23, and a first bevel gear. 24. Second bevel gear 25. Hose 26. Moisture box 27. Storage roller 28. Second camera 29. Smoke alarm 30. An electric telescopic rod 2 is fixedly installed on the inner left wall of the cabinet 1. An installation plate 3 is provided on the inner left side of the cabinet 1. A limiting groove 4 is opened at the outer end of the installation plate 3. A first motor 5 is fixed at both the upper and lower ends of the right side of the installation plate 3. A winding roller 6 is fixed at the output end of the first motor 5. A connecting rope 7 is wound around the outer side of the winding roller 6. A first camera 8 is fixed on the connecting rope 7.

[0042] The operating mechanism 9 is installed on the right side of the mounting plate 3, the mounting truss 10 is provided below the limiting groove 4, and the circulating water pump 11 is provided on the left side of the cabinet 1.

[0043] The water tank 12 is buried underground, and corrosion-resistant heat dissipation fins 13 are fixed at equal intervals on the outer side of the water tank 12. A concrete leveling plate 14 is provided below the water tank 12.

[0044] A cabinet door 15 is hinged to the right end of the cabinet body 1. A control panel 16 is fixed to the right side of the cabinet door 15. A fire extinguishing gas cylinder 17 is fixed to the left side of the cabinet door 15 via a rod. A mounting box 18 is fixed to the left side of the cabinet door 15. A second motor 19 is fixed to the bottom of the mounting box 18. A lead screw 20 is fixed to the output end of the second motor 19. A moving plate 21 is threaded to the outer end of the lead screw 20. A spray pipe 22 is fixed to the left side of the moving plate 21. The left end of the 2 is fixed with nozzles 23 at equal intervals. The upper surface of the lead screw 20 is fixed with a first bevel gear 24. The left end of the first bevel gear 24 is meshed with a second bevel gear 25. The left side of the second bevel gear 25 is fixed with a collection roller 28. The outer side of the collection roller 28 is wrapped with a flexible tube 26. Moisture-proof boxes 27 are provided on both the front and rear sides of the mounting box 18. The top of the cabinet door 15 is fixed with a second camera 29. The bottom of the cabinet body 1 is equipped with a smoke alarm 30.

[0045] like Figure 1 and Figure 3 In the operation mechanism 9, a support plate is provided inside, and the first camera 8 is located on the right side of the support plate inside the operation mechanism 9. The first camera 8 monitors the components inside the operation mechanism 9 that are blocked by the support plate.

[0046] like Figure 1 and Figure 3 In this configuration, the first camera 8 forms a lifting structure with the operating mechanism 9 via the connecting rope 7 and the winding roller 6. The lifting of the first camera 8 facilitates comprehensive monitoring of all parts of the operating mechanism 9.

[0047] like Figure 1 In this case, the upper and lower ends of the mounting plate 3 are both fitted with the output ends of the electric telescopic rod 2, and the mounting plate 3 is installed inside the cabinet 1 through the electric telescopic rod 2.

[0048] like Figure 1 and Figure 3 In this system, the interior of the cabinet 1 is hollow, and the cabinet 1 is connected to the water tank 12 through a pipe, so that cold water can flow inside the hollow cabinet 1.

[0049] like Figure 1 and Figure 3 In this configuration, the electric telescopic pole 2, the first motor 5, the first camera 8, the second motor 19, and the control panel 16 are all electrically connected to the control panel 16, and the electric telescopic pole 2, the first motor 5, the first camera 8, and the second motor 19 are controlled through the control panel 16.

[0050] like Figure 1 and Figure 2 In the process, the right end of the fire extinguishing gas cylinder 17 is connected to a hose 26, and the bottom end of the hose 26 is fixedly connected to the spray pipe 22, so as to transport the fire extinguishing gas inside the fire extinguishing gas cylinder 17.

[0051] like Figure 1 and Figure 2 In this mechanism, the lead screw 20, the moving plate 21, the first bevel gear 24, the second bevel gear 25 and the collecting roller 28 constitute a linkage mechanism. The rotation of the lead screw 20 drives the collecting roller 28 to rotate, which facilitates the collection of the hose 26.

[0052] Workers excavated directly below the installation location of cabinet 1, then poured a concrete leveling plate 14 into the installation pit, and subsequently placed the water tank 12 on the concrete leveling plate 14. Figure 1 As shown, pipes are connected to the upper left and right ends of the water tank 12. The pipes connected to the water tank 12 are extended out of the ground. Then, soil is filled into the installation pit, and the soil surrounds the water tank 12 and the corrosion-resistant heat sink 13. Then, the cabinet 1 is moved above the water tank 12, and electrical components are installed on the installation truss 10.

[0053] The pipe connected to the right end of the water tank 12 is connected to the rear end of the cabinet 1, and the pipe connected to the upper left end of the water tank 12 is connected to the input end of the circulating water pump 11. The interior of the cabinet 1 is a hollow structure. Under the action of the circulating water pump 11, the low temperature water inside the water tank 12 is transported to the interior of the cabinet 1.

[0054] When the internal temperature of cabinet 1 is high, the circulating water pump 11 is turned on, and the water circulates inside cabinet 1 and water tank 12 under the action of the circulating water pump 11, thereby reducing the temperature of the electrical components inside cabinet 1.

[0055] The operating mechanism 9 is mounted on the mounting plate 3. The output end of the electric telescopic rod 2 is engaged in the limiting groove 4 at the outer end of the mounting plate 3. The electric telescopic rod 2 confines the mounting plate 3 inside the cabinet 1. When the operating mechanism 9 malfunctions and needs repair, the first motor 5 is turned on. The first motor 5 drives the take-up roller 6 to rotate counterclockwise, thereby causing the connecting rope 7 to move the first camera 8 upward. When the first motor 5 drives the take-up roller 6 to rotate clockwise, the connecting rope 7 moves the first camera 8 downward. The first camera 8 captures images of the components inside the operating mechanism 9 that are blocked by the support plate. The images captured by the first camera 8 are transmitted to the display screen of the control panel 16. The staff can understand the status of the operating mechanism 9 through the display screen on the control panel 16, thereby determining the location of the malfunction of the operating mechanism 9. Then, the electric telescopic rod 2 is turned on, the output end of the electric telescopic rod 2 leaves the limiting groove 4, the mounting plate 3 is removed, and the operating mechanism 9 is removed, allowing for quick disassembly and repair of the operating mechanism 9.

[0056] like Figure 2 As shown, a second camera 29 is installed on the cabinet door 15 to monitor the interior of the cabinet 1. In the event of a fire, the smoke detector 30 inside the cabinet 1 will sound an alarm, and the control panel 16 will activate the second motor 19. The second motor 19 will drive the lead screw 20, the first bevel gear 24, and the second bevel gear 25 to rotate, thereby causing the moving plate 21, which is threaded to the lead screw 20, to move up and down. This will cause the spray pipe 22 and the nozzle 23 to move up and down. When the spray pipe 22 moves downward, the collecting roller 28 will move counterclockwise to release the hose 26. When the spray pipe 22 moves upward, the collecting roller 28 will move clockwise to retract the hose 26, preventing the hose 26 from being scattered. After the spray pipe 22 and the nozzle 23 are moved to the fire location, the fire extinguishing gas cylinder 17, which is equipped with a valve, will open. The heptafluoropropane inside the fire extinguishing gas cylinder 17 will flow through the hose 26 to the spray pipe 22 and the nozzle 23. The heptafluoropropane will then be sprayed from the nozzle 23 to the fire location for fire extinguishing.

[0057] 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 ring main unit with an easily maintainable operating mechanism, comprising a cabinet (1), an operating mechanism (9), a control panel (16), and a fire extinguishing gas cylinder (17), characterized in that: An electric telescopic rod (2) is fixedly installed on the inner left wall of the cabinet (1). An installation plate (3) is provided on the inner left side of the cabinet (1). A limiting groove (4) is opened at the outer end of the installation plate (3). A first motor (5) is fixed at both the upper and lower ends of the right side of the installation plate (3). A winding roller (6) is fixed at the output end of the first motor (5). A connecting rope (7) is coiled around the outer side of the winding roller (6). A first camera (8) is fixed on the connecting rope (7). The operating mechanism (9) is installed on the right side of the mounting plate (3), and a mounting truss (10) is provided below the limiting groove (4). A circulating water pump (11) is provided on the left side of the cabinet (1). The water tank (12) is buried underground, and corrosion-resistant heat dissipation fins (13) are fixed at equal intervals on the outer side of the water tank (12). A concrete leveling plate (14) is provided below the water tank (12). The cabinet (1) has a door (15) mounted on its right side via a hinge. A control panel (16) is fixed to the right side of the door (15). A fire extinguishing gas cylinder (17) is fixed to the left side of the door (15) via a rod. An installation box (18) is fixed to the left side of the door (15). A second motor (19) is fixed to the bottom of the installation box (18). A lead screw (20) is fixed to the output end of the second motor (19). A moving plate (21) is threaded to the outer end of the lead screw (20). A spray pipe (22) is fixed to the left side of the moving plate (21). 22) has nozzles (23) fixed at equal intervals on the left end. The upper surface of the screw (20) is fixed with a first bevel gear (24). The left end of the first bevel gear (24) is meshed with a second bevel gear (25). The left side of the second bevel gear (25) is fixed with a collection roller (28). The outer side of the collection roller (28) is wrapped with a hose (26). Moisture-proof boxes (27) are provided on the front and rear sides of the mounting box (18). The top of the cabinet door (15) is fixed with a second camera (29). The bottom of the cabinet body (1) is equipped with a smoke alarm (30). The upper and lower ends of the mounting plate (3) are both fitted with the output ends of the electric telescopic rod (2); The cabinet (1) has a hollow interior and is connected to the water tank (12) via a pipe. The right end of the fire extinguishing gas cylinder (17) is connected to a hose (26), and the bottom end of the hose (26) is fixedly connected to the spray pipe (22).

2. The ring main unit with an operating mechanism that is easy to maintain according to claim 1, characterized in that: The operating mechanism (9) has a support plate inside, and the first camera (8) is located on the right side of the support plate inside the operating mechanism (9).

3. A ring main unit with an operating mechanism that is easy to maintain according to claim 1, characterized in that: The first camera (8) forms a lifting structure with the operating mechanism (9) through the connecting rope (7) and the take-up roller (6).

4. A ring main unit with an operating mechanism that is easy to maintain according to claim 1, characterized in that: The electric telescopic rod (2), the first motor (5), the first camera (8), the second motor (19), and the control panel (16) are all electrically connected to the control panel (16).

5. A ring main unit with an operating mechanism that is easy to maintain according to claim 1, characterized in that: The lead screw (20), the moving plate (21), the first bevel gear (24), the second bevel gear (25), and the receiving roller (28) constitute a linkage mechanism.

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