Multifunctional ring main unit for power transmission

Abstract

The utility model discloses a multifunctional ring main unit for power transmission, which comprises a ring main unit body, a bearing plate is slidably mounted in the ring main unit body, a first cabinet body and a second cabinet body are slidably mounted at the top end of the bearing plate, and side walls of the first cabinet body and the second cabinet body are provided with through grooves. A self-locking assembly is arranged between the first cabinet body and the second cabinet body. According to the utility model, only the bearing plate needs to be pulled out of the ring main unit body through the handle, so that the two cabinet bodies are also pulled out of the ring main unit body, then the two cabinet bodies can be overhauled outside and inside the ring main unit body, and the through groove between the two cabinet bodies is used for connecting cables between the two cabinet bodies. And the self-locking assembly adopts the arrangement of an insertion rod and an insertion groove, so that the risk that the nut is rusted and locked is avoided, and the risk that the nut is rusted and cannot be disassembled is avoided while the internal cabinet body is conveniently repaired by the device.

Description

Technical Field

[0001] The utility model relates to the technical field of ring main units, in particular to a multifunctional ring main unit for power transmission. Background Technique

[0002] The ring main unit, as an important device in the power system, is mainly used for ring network power supply and terminal power supply in urban power grids. It integrates the functions of high-voltage switchgear, such as load switches, fuses, and corresponding control, measurement, and protection devices, etc., in a closed metal cabinet to form a compact power distribution device. The ring main unit has the advantages of compact structure, small volume, less floor area, simple installation, reliable operation, small maintenance workload, and safe use, and is widely used in distribution substations and box-type substations at load centers such as urban residential areas, high-rise buildings, large public buildings, and industrial enterprises. The ring main unit not only improves the reliability and safety of power supply but also effectively optimizes the power grid structure and enhances the overall operation efficiency of the power system.

[0003] The internal design of the ring main unit usually includes two main cabinets: the incoming line cabinet and the outgoing line cabinet. The incoming line cabinet is the part of the ring main unit used to receive the external power input. It is connected to the superior power grid and is responsible for introducing electric energy into the ring main unit system. The incoming line cabinet is usually equipped with high-voltage switches, protection devices, and related measurement and control equipment to ensure the safe and reliable input of electric energy. The outgoing line cabinet, on the other hand, is responsible for distributing the electric energy from the ring main unit to each load point. It is the key part connecting the ring main unit to the inferior power grid or user equipment. The outgoing line cabinet is also configured with high-voltage switches, protection equipment, and necessary measurement and control components to ensure the high-quality and stable output of electric energy. This design of separating the incoming line from the outgoing line not only improves the operation flexibility of the ring main unit but also effectively enhances the stability and safety of the power system.

[0004] Inside the ring main unit in the prior art, generally two or more cabinets are designed. These cabinets are usually directly placed in the ring main unit and rely on simple nut fixation for installation. The incoming line cabinet and the outgoing line cabinet are interconnected by numerous cables. When maintenance is required inside the ring main unit, it is usually carried out directly inside the ring main unit. However, due to the narrow internal space, insufficient light, and complex cable layout inside the ring main unit, the maintenance work becomes quite difficult. In some maintenance scenarios, it may be necessary to disassemble the internal cabinets for inspection or replacement. However, since the cabinets are connected by a large number of cables, it is necessary to simultaneously disassemble all the connection components between the two cabinets and the ring main unit, and then move the cabinets out. This process is not only cumbersome but also may cause accidental damage to the cables between the cabinets. In addition, the nut connection method is adopted between the internal cabinets and the ring main unit. Once the nuts are affected by moisture, they are easily corroded with the connected bolts, which undoubtedly further increases the difficulty and complexity of disassembly. Therefore, aiming at these deficiencies in the design of the existing ring main unit, a more convenient and efficient maintenance and replacement solution is urgently needed to improve the maintenance experience and reduce the potential risk of cable damage. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-functional ring main unit for power transmission to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention adopts the following technical solution: A multi-functional ring main unit for power transmission includes a ring main unit cabinet body. A receiving plate is slidably installed inside the ring main unit cabinet body. A first cabinet and a second cabinet are slidably installed at the top of the receiving plate. Through grooves are provided on the side walls of the first cabinet and the second cabinet. A self-locking component is arranged between the first cabinet and the second cabinet. Wedge-shaped limiting plates are fixedly installed on the side walls of the first cabinet and the second cabinet close to the inner wall of the ring main unit cabinet body. Two first limiting grooves are opened on the inner wall of the ring main unit cabinet body. The two wedge-shaped limiting plates are slidably connected with the two first limiting grooves. A plurality of second limiting grooves are opened at the top of the receiving plate. Limiting strips are fixedly installed at the bottoms of the first cabinet and the second cabinet. The limiting strips are slidably connected with the second limiting grooves. The direction of the limiting strips and the second limiting grooves is perpendicular to the side wall of the ring main unit cabinet body.

[0007] As a further description of the above technical solution: A connecting strip is fixedly installed on the side wall of the receiving plate. Two sliding grooves are opened on the side wall of the receiving plate. The two connecting strips are slidably connected with the sliding grooves.

[0008] As a further description of the above technical solution: The self-locking component includes a plurality of connecting columns and a plurality of grooves. The plurality of connecting columns and the plurality of grooves are respectively arranged on the side walls of the first cabinet body and the second cabinet body. Slots are arranged on the plurality of connecting columns, and inserting rods are arranged on one side of each of the plurality of grooves. The plurality of inserting rods penetrate through the side wall of the second cabinet body and are slidably connected to the second cabinet body. Springs are connected between the tops of the plurality of inserting rods and the second cabinet body.

[0009] As a further description of the above technical solution: One end of the connecting column is provided with an inclined surface, and a ball is rotatably connected to one end of the inserting rod.

[0010] As a further description of the above technical solution: A handle is arranged on the side wall of the bearing plate. Hinge assemblies are arranged on both sides of the ring main unit cabinet body, and cabinet doors are arranged on the hinge assemblies. The cabinet doors are rotatably connected to the ring main unit cabinet body through the hinge assemblies.

[0011] As a further description of the above technical solution: A plurality of heat dissipation slots are formed in the side wall of the ring main unit cabinet body on the side away from the cabinet door.

[0012] The utility model provides a multifunctional ring main unit for power transmission, which has the following beneficial effects: The two cabinet bodies of the utility model are slidably installed above the bearing plate through the limiting strips, and the cabinet bodies are connected through the self-locking component, realizing the preliminary limitation of the two cabinet bodies above the bearing plate. The bearing plate is slidably installed inside the ring main unit cabinet body through the connecting strips. The wedge-shaped limiting plates on both sides can realize the horizontal and vertical limitation of the two cabinet bodies inside the ring main unit cabinet body, without jolting upwards or shifting horizontally. Since the directions of the limiting strips below and the second limiting grooves are perpendicular to the side wall of the ring main unit cabinet body, the longitudinal limitation of the two cabinet bodies is realized. And when it is necessary to overhaul the two cabinet bodies inside, only need to pull out the bearing plate from the ring main unit cabinet body through the handle, so as to also pull out the two cabinet bodies from the inside of the ring main unit, and then the two cabinet bodies can be overhauled outside or inside the ring main unit cabinet body. The through slots between the two cabinet bodies are used for connecting the cables between the two cabinet bodies, and the self-locking component adopts the setting of inserting rods and slots, without the risk of nut corrosion and locking. The above device realizes the convenient overhaul of the internal cabinet body while avoiding the risk of being unable to disassemble due to nut corrosion.

[0013] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the present disclosure.

[0014] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not an exhaustive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1The overall three-dimensional structure diagram of a multi-functional ring main switchgear for power transmission proposed by the present utility model;

[0016] Figure 2 The three-dimensional structure diagram of the present utility model after the cabinet door is closed;

[0017] Figure 3 The three-dimensional structure diagram of another perspective of the present utility model after the cabinet door is closed;

[0018] Figure 4 The three-dimensional structure diagram of the interior of the ring main switchgear cabinet body of the present utility model;

[0019] Figure 5 The three-dimensional exploded structure diagram between the first cabinet body, the second cabinet body and the bearing plate of the present utility model;

[0020] Figure 6 The three-dimensional exploded structure diagram of the self-locking component of the present utility model;

[0021] Figure 7 The three-dimensional structure diagram of the dust-proof net arranged inside the heat dissipation slot of the present utility model.

[0022] Legend:

[0023] 1. Ring main switchgear cabinet body; 2. Hinge assembly; 3. Cabinet door; 4. Bearing plate; 5. Handle; 6. Connecting strip; 7. Slide groove; 8. First cabinet body; 9. Second cabinet body; 10. First limiting groove; 11. Wedge-shaped limiting plate; 12. Limiting strip; 13. Second limiting groove; 14. Through groove; 15. Connecting column; 16. Slot; 17. Groove; 18. Plug rod; 19. Spring; 20. Ball; 21. Inclined plane; 22. Heat dissipation slot; 23. Dust-proof net. Specific implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] Refer to Figure 1-7, A multifunctional ring main unit for power transmission, including a ring main unit cabinet body 1. Inside the ring main unit cabinet body 1, a receiving plate 4 is slidably installed. On the top of the receiving plate 4, a first cabinet body 8 and a second cabinet body 9 are slidably installed. Through grooves 14 are provided on the side walls of the first cabinet body 8 and the second cabinet body 9. A self-locking component is arranged between the first cabinet body 8 and the second cabinet body 9. On the side walls of the first cabinet body 8 and the second cabinet body 9 close to the inner wall of the ring main unit cabinet body 1, wedge-shaped limiting plates 11 are fixedly installed. Two first limiting grooves 10 are opened on the inner wall of the ring main unit cabinet body 1. The two wedge-shaped limiting plates 11 are slidably connected to the two first limiting grooves 10. Multiple second limiting grooves 13 are opened on the top of the receiving plate 4. On the bottom ends of the first cabinet body 8 and the second cabinet body 9, limiting strips 12 are fixedly installed. The limiting strips 12 are slidably connected to the second limiting grooves 13. The directions in which the limiting strips 12 and the second limiting grooves 13 are arranged are perpendicular to the side wall of the ring main unit cabinet body 1. The two cabinet bodies are slidably installed above the receiving plate 4 through the limiting strips 12, and the cabinet bodies are connected through the self-locking component, realizing the preliminary limitation of the two cabinet bodies above the receiving plate 4. The receiving plate 4 is slidably installed inside the ring main unit cabinet body 1 through the connecting strips 6. The setting of the wedge-shaped limiting plates 11 on both sides can realize the horizontal and vertical limitation of the two cabinet bodies inside the ring main unit cabinet body 1, without jolting upwards or shifting horizontally. Since the directions in which the limiting strips 12 below and the second limiting grooves 13 are arranged are perpendicular to the side wall of the ring main unit cabinet body 1, the longitudinal limitation of the two cabinet bodies is realized. And when it is necessary to repair the two cabinet bodies inside, only need to pull out the receiving plate 4 from the ring main unit cabinet body 1 through the handle 5, so as to also pull out the two cabinet bodies from the inside of the ring main unit, and then the two cabinet bodies can be repaired outside or inside the ring main unit cabinet body 1. The through grooves 14 between the two cabinet bodies are used for the connection of cables between the two cabinet bodies. And the self-locking component adopts the setting of inserting rods 18 and slots 16, without the risk of nut corrosion and locking. The above device realizes the convenience of repairing the internal cabinet body while avoiding the risk of being unable to disassemble due to nut corrosion.

[0026] As a preferred technical solution of this embodiment, connecting strips 6 are fixedly installed on the side wall of the receiving plate 4, and two sliding grooves 7 are opened on the side wall of the receiving plate 4. The two connecting strips 6 are slidably connected to the sliding grooves 7. The setting of the connecting strips 6 and the sliding grooves 7 can increase the contact area between the receiving plate 4 and the side wall of the ring main unit cabinet body 1, making the sliding process of the receiving plate 4 more stable.

[0027] As a preferred technical solution of this embodiment, the self-locking assembly includes a plurality of connecting columns 15 and a plurality of grooves 17. The plurality of connecting columns 15 and the plurality of grooves 17 are respectively arranged on the side walls of the first cabinet 8 and the second cabinet 9. Slots 16 are arranged on the plurality of connecting columns 15, and insertion rods 18 are arranged on one side of the plurality of grooves 17. The plurality of insertion rods 18 penetrate through the side wall of the second cabinet 9 and are slidably connected to the second cabinet 9. A spring 19 is connected between the top ends of the plurality of insertion rods 18 and the second cabinet 9. When the first cabinet 8 and the second cabinet 9 come into contact with each other, the insertion rod 18 is lifted by the connecting column 15. Then, when the bottom end of the insertion rod 18 contacts the slot 16 on the connecting column 15, under the action of the spring 19, the insertion rod 18 is inserted into the inside of the slot 16, realizing the connection between the first cabinet 8 and the second cabinet 9.

[0028] As a preferred technical solution of this embodiment, one end of the connecting column 15 is provided with an inclined surface 21, and a ball 20 is rotatably connected to one end of the insertion rod 18. The arrangement of the inclined surface 21 and the ball 20 can make it more convenient for the connecting column 15 to lift the insertion rod 18 and prevent jamming between the connecting column 15 and the insertion rod 18.

[0029] As a preferred technical solution of this embodiment, a handle 5 is arranged on the side wall of the bearing plate 4. Hinge assemblies 2 are arranged on both sides of the ring main unit cabinet 1. A cabinet door 3 is arranged on the hinge assemblies 2. The cabinet door 3 is rotatably connected to the ring main unit cabinet 1 through the hinge assemblies 2. The arrangement of the handle 5 makes it more convenient to pull out the bearing plate 4, and the arrangement of the cabinet door 3 can protect the inside of the ring main unit cabinet 1.

[0030] As a preferred technical solution of this embodiment, a plurality of heat dissipation slots 22 are formed in the side wall of the ring main unit cabinet 1 away from the cabinet door 3. A large amount of heat generated during the operation inside the ring main unit cabinet 1 can be dissipated through the heat dissipation slots 22, and the heat inside the heat dissipation slots 22 is dissipated through the heat dissipation slots 22, improving the heat dissipation performance of the device.

[0031] As a preferred technical solution of this embodiment, dust-proof nets 23 are arranged inside the plurality of heat dissipation slots 22. The arrangement of the dust-proof nets 23 can prevent dust from entering the inside of the ring main unit cabinet 1 through the heat dissipation slots 22 through the dust-proof nets 23, improving the dust-proof performance of the device.

[0032] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A multi-functional ring main unit for power transmission, comprising a ring main unit cabinet body (1), characterized in that, A receiving plate (4) is slidably installed inside the ring main unit cabinet body (1). A first cabinet body (8) and a second cabinet body (9) are slidably installed at the top end of the receiving plate (4). Through grooves (14) are provided on the side walls of both the first cabinet body (8) and the second cabinet body (9). A self-locking component is provided between the first cabinet body (8) and the second cabinet body (9). Wedge-shaped limiting plates (11) are fixedly installed on the side walls of the first cabinet body (8) and the second cabinet body (9) close to the inner wall of the ring main unit cabinet body (1). Two first limiting grooves (10) are formed in the inner wall of the ring main unit cabinet body (1). The two wedge-shaped limiting plates (11) are slidably connected to the two first limiting grooves (10). A plurality of second limiting grooves (13) are formed at the top end of the receiving plate (4). Limiting strips (12) are fixedly installed at the bottom ends of both the first cabinet body (8) and the second cabinet body (9). The limiting strips (12) are slidably connected to the second limiting grooves (13). The directions in which the limiting strips (12) and the second limiting grooves (13) are provided are perpendicular to the side wall of the ring main unit cabinet body (1).

2. The multi-functional ring main switchgear for power transmission according to claim 1, wherein A connecting strip (6) is fixedly installed on the side wall of the receiving plate (4). Two sliding grooves (7) are formed in the side wall of the receiving plate (4). The two connecting strips (6) are slidably connected to the sliding grooves (7).

3. The multi-functional ring main switchgear for power transmission according to claim 1, characterized in that, The self-locking component includes a plurality of connecting columns (15) and a plurality of grooves (17). The plurality of connecting columns (15) and the plurality of grooves (17) are respectively provided on the side walls of the first cabinet body (8) and the second cabinet body (9). Slots (16) are provided on the plurality of connecting columns (15). Plug rods (18) are provided on one side of each of the plurality of grooves (17). The plurality of plug rods (18) penetrate through the side wall of the second cabinet body (9) and are slidably connected to the second cabinet body (9). Springs (19) are connected between the top ends of the plurality of plug rods (18) and the second cabinet body (9).

4. A multifunctional ring main unit for power transmission according to claim 3, characterized in that, One end of the connecting column (15) is provided with an inclined surface (21). A ball (20) is rotatably connected to one end of the plug rod (18).

5. A multifunctional ring main unit for power transmission according to claim 1, characterized in that, A handle (5) is provided on the side wall of the receiving plate (4). Hinge assemblies (2) are provided on both sides of the ring main unit cabinet body (1). A cabinet door (3) is provided on the hinge assemblies (2). The cabinet door (3) is rotatably connected to the ring main unit cabinet body (1) through the hinge assemblies (2).

6. A multi-functional ring main unit for power transmission according to claim 5, characterized in that A plurality of heat dissipation slots (22) are formed in the side wall of the ring main unit cabinet body (1) away from the cabinet door (3).

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