Gas all-insulation ring main unit with load switch

Abstract

The utility model discloses a gas all-insulation ring main unit with a load switch, and relates to the technical field of all-insulation ring main units, the gas all-insulation ring main unit comprises a cabinet body, both sides of the inner wall of the cabinet body are provided with wire arrangement boxes, and one side of each wire arrangement box close to the inner wall of the cabinet body is provided with an installation clamping groove. And mounting clamping blocks are mounted in the two mounting clamping grooves in a clamped mode, handles are arranged at the tops of the two wire arranging boxes, and mounting frames are arranged on the opposite sides of the two wire arranging boxes. According to the utility model, the wire body passes through the wire combing groove, the passing end is in butt joint with the load switch body, and the adjusting screw rod is rotated to drive the pressing plate to move towards the direction of the installation clamping groove in the wire arranging box, so that the wire body in the wire arranging box can be extruded and fixed, and the phenomenon of disorder in a cabinet body caused by loose wire harnesses is avoided; therefore, the arranged wire harnesses can make a certain space for the interior of the cabinet body, and a worker can conveniently overhaul and maintain components in the cabinet body.

Description

Technical Field

[0001] This utility model relates to the field of fully insulated ring main unit technology, specifically a gas-insulated ring main unit with a load switch. Background Technology

[0002] Gas-insulated ring main units (RMMs) are crucial electrical devices in power systems. Using gas as the insulating medium, they completely isolate all electrical components and live parts, achieving high insulation performance. These RMMs are widely used in urban power grids, industrial parks, and power distribution networks of various buildings. Structurally, a gas-insulated RMM typically consists of multiple functional units, including incoming line units, outgoing line units, and busbar connection units. These functional units, through rational layout and connection, form a complete power supply and distribution system.

[0003] The existing authorized announcement number CN202616606U discloses an intelligent box-type sectionalizing switch, including an outer box and an inner ring main unit containing electrical components. The outer box is floor-mounted, made of stainless steel, with an attractive appearance, small size, and high protection level. The inner ring main unit consists of two fully insulated and sealed SF6 ring main units and secondary equipment auxiliary cabinets. The power supply side includes a load switch and a voltage transformer unit (CPt) cabinet, while the load side includes a vacuum circuit breaker outgoing unit (V cabinet). All high-voltage live components are sealed in a stainless steel gas box filled with SF6 gas. The incoming and outgoing lines use fully sealed elbow-type cable plugs, providing high reliability and maintenance-free operation. This utility model is particularly suitable for installation on 10kV terminal lines as a ground-mounted switchgear separating the power supply company from the user, completely replacing pole-mounted vacuum circuit breakers. It eliminates the need for working at heights and maintenance, making daily maintenance and repair particularly convenient.

[0004] While the aforementioned technical solution facilitates routine maintenance and repair, the complex internal structure of the cabinet, involving various electrical components and insulation systems, coupled with the lack of wiring organization, results in a cluttered interior. This can restrict the installation of the load switch in cabinets with limited space, and subsequent inspection and maintenance become more difficult, requiring careful wiring organization by staff. Therefore, we provide a gas-insulated ring main unit with a load switch. Utility Model Content

[0005] The purpose of this utility model is to provide a gas-insulated ring main unit with a load switch to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gas-insulated ring main unit with a load switch, comprising a cabinet body, cable management boxes on both sides of the inner wall of the cabinet body, mounting slots on the side of each cable management box near the inner wall of the cabinet body, mounting blocks being engaged in the mounting slots, handles on the top of each cable management box, mounting brackets on opposite sides of each cable management box, adjusting screws in the threaded grooves of each mounting bracket, bearings on the ends of each adjusting screws near the mounting slots, pressure plates on the outside of each bearing, limit guide rods in the slots at the top and bottom of each pressure plate, multiple combing grooves arranged in an array through each side of each cable management box, a dustproof net connected to the slot at the top of the cabinet body, the dustproof net being fixed to the cabinet body by bolts, and heat dissipation mechanisms in the slots on both sides of the cabinet body.

[0007] As a further preferred embodiment of this technical solution, the heat dissipation mechanism includes a motor, the bottom of which is fixedly connected to the top of the bracket.

[0008] As a further preferred embodiment of this technical solution, the bottom of the bracket is fixedly connected to the bottom of the inner wall of the slot opened on one side of the cabinet, the output end of the motor is fixedly connected to the cooling fan, and the cooling fan is provided with an installation shell.

[0009] As a further preferred embodiment of this technical solution, the two mounting blocks are respectively fixedly installed on both sides of the inner wall of the cabinet, and the handle is fixedly connected to the top of the cable management box.

[0010] As a further preferred embodiment of this technical solution, a mounting bracket is fixedly connected to the side of the cable management box away from the mounting slot, and an adjusting screw is threadedly connected to the threaded groove of the mounting bracket.

[0011] As a further preferred embodiment of this technical solution, the end of the mounting screw near the mounting slot is fixedly connected to the inside of the bearing, and the outside of the bearing is fixedly connected to the inner wall of the slot opened on one side of the pressure plate.

[0012] As a further preferred embodiment of this technical solution, one end of the limiting guide rod is fixedly connected to the inner wall of the cable management box near the limiting slot, the outside of the limiting guide rod is slidably connected to the slot opened in the pressure plate, and a load switch body is provided inside the cabinet.

[0013] This utility model provides a gas-insulated ring main unit with a load switch, which has the following advantages:

[0014] (1) This utility model passes the wire through the comb groove and connects the end through to the load switch body. By rotating the adjusting screw, the pressure plate moves in the direction of the mounting slot in the wire management box, thereby squeezing and fixing the wire in the wire management box, avoiding the phenomenon of loose wire bundles causing mess in the cabinet. Therefore, the tidied wire bundle can free up a certain space inside the cabinet, making it easier for staff to inspect and maintain the internal components of the cabinet.

[0015] (2) This utility model starts the motor to make the cooling fan rotate, and the airflow generated can dissipate the heat accumulated in the cabinet to the outside, thus avoiding the heat from affecting the components inside the cabinet. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a gas-insulated ring main unit with a load switch according to the present invention.

[0017] Figure 2 This is a partial disassembly schematic diagram of the side of a gas-insulated ring main unit with a load switch according to this utility model.

[0018] Figure 3 This is a partial sectional side view of a gas-insulated ring main unit with a load switch according to this utility model.

[0019] Figure 4 This is a side view of the heat dissipation mechanism of a gas-insulated ring main unit with a load switch according to this utility model.

[0020] In the diagram: 11. Cabinet; 12. Cable management box; 13. Mounting clip; 14. Mounting slot; 15. Handle; 16. Mounting bracket; 17. Adjusting screw; 18. Bearing; 19. Pressure plate; 110. Limiting guide rod; 111. Cable combing groove; 112. Dustproof net; 113. Bolt;

[0021] 2. Heat dissipation mechanism; 21. Motor; 22. Bracket; 23. Cooling fan; 24. Mounting housing;

[0022] 31. Load switch body. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figures 1-4As shown in this embodiment, a gas-insulated ring main unit with a load switch includes a cabinet 11. Cable management boxes 12 are provided on both sides of the inner wall of the cabinet 11. Each cable management box 12 has a mounting slot 14 on the side closest to the inner wall of the cabinet 11. Mounting blocks 13 are engaged in each mounting slot 14. Handles 15 are provided on the top of each cable management box 12. The mounting blocks 13 are fixedly installed on both sides of the inner wall of the cabinet 11. The handles 15 are fixedly connected to the top of the cable management boxes 12. Mounting brackets 16 are provided on opposite sides of each cable management box 12. Adjusting screws 17 are provided in the threaded grooves of each mounting bracket 16. Mounting brackets 16 are fixedly connected to the side of the cable management box 12 away from the mounting slots 14. Adjusting screws 17 are threadedly connected to the threaded grooves of the mounting brackets 16. The two adjusting screws 17 are close to the mounting slots 14. Each of the two cable management boxes 12 has a bearing 18 at one end, and a pressure plate 19 is provided on the outside of each bearing 18. The end of the mounting screw near the mounting slot 14 is fixedly connected to the inside of the bearing 18. The outside of the bearing 18 is fixedly connected to the inner wall of the slot on one side of the pressure plate 19. Limiting guide rods 110 are provided in the slots at the top and bottom of the two pressure plates 19. One end of the limiting guide rod 110 is fixedly connected to the inner wall of the cable management box 12 near the limiting slot. The outside of the limiting guide rod 110 is slidably connected to the slot on the pressure plate 19. A load switch body 31 is provided inside the cabinet 11. Multiple combing slots 111 are arrayed and opened through both sides of the two cable management boxes 12. A dustproof net 112 is connected to the slot at the top of the cabinet 11. The dustproof net 112 is fixedly installed to the cabinet 11 by bolts 113. A heat dissipation mechanism 2 is provided in the slots on both sides of the cabinet 11.

[0025] In this embodiment, during power distribution, the load switch is used to connect or disconnect the load current to achieve power distribution and control. Therefore, during the installation and commissioning of the ring main unit, the ring main unit is installed in a predetermined position, ensuring that the foundation is stable and well grounded. The incoming and outgoing cables are connected, ensuring correct wiring. Insulating gas (such as SF6) is filled to the specified pressure to ensure insulation performance. Equipment commissioning is performed, and the normal operation of the load switch is checked. When connecting the cables to the load switch body 31, to avoid messy wiring inside the cabinet 11, the cables can be threaded through... The cable passes through the cable tray 111 and connects one end of the cable to the load switch body 31. By rotating the adjusting screw 17, the pressure plate 19 moves in the direction of the mounting slot 14 within the cable management box 12, thereby squeezing and fixing the cables inside the cable management box 12 to prevent the cable bundle from becoming loose and messy inside the cabinet 11. Therefore, the organized cable bundle can free up some space inside the cabinet 11, making it easier for staff to inspect and maintain the components inside the cabinet 11. The cable management box 12 can be removed using the mounting block 13 and the mounting slot 14.

[0026] like Figures 1-4As shown, the heat dissipation mechanism 2 includes a motor 21, the bottom of which is fixedly connected to the top of a bracket 22, the bottom of which is fixedly connected to the bottom of the inner wall of a slot opened on one side of the cabinet 11, the output end of which is fixedly connected to a cooling fan 23, and the cooling fan 23 is provided with an installation shell 24.

[0027] In this embodiment, when the ring main unit is in use, the heat generated will accumulate inside the unit, which will affect the components inside the unit. Therefore, the motor 21 can be started to make the cooling fan 23 rotate, and the airflow generated can dissipate the heat accumulated inside the unit 11 to the outside, so as to avoid the heat affecting the components inside the unit.

[0028] This utility model provides a gas-insulated ring main unit with a load switch, and its specific working principle is as follows:

[0029] When it is necessary to repair and inspect the components inside the cabinet, in order to avoid the mess of wires inside the cabinet 11, the wires can be arranged in an orderly manner through the comb groove 111, and one end passing through the comb groove 111 is directly connected to the load switch body 31. By rotating the adjusting screw 17, the pressure plate 19 is moved in the direction of the mounting slot 14 in the cable management box 12, thereby squeezing and fixing the wires inside the cable management box 12. This design can not only effectively avoid the mess of wires inside the cabinet 11 caused by loose wires, but also make the wires neatly arranged, freeing up more space inside the cabinet 11. The organized wires are not only beautiful, but also significantly improve the space utilization rate inside the cabinet 11, making it easier for staff to inspect and maintain the components inside the cabinet 11.

[0030] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas-insulated ring main unit with a load switch, comprising a cabinet (11), characterized in that: Cable management boxes (12) are provided on both sides of the inner wall of the cabinet (11). Each cable management box (12) has a mounting slot (14) on the side closest to the inner wall of the cabinet (11). Each mounting slot (14) contains a mounting block (13). Each cable management box (12) has a handle (15) on its top. Each cable management box (12) has a mounting bracket (16) on its opposite side. Each mounting bracket (16) has an adjusting screw (17) in its threaded groove. The adjusting screws (17) are positioned close to the mounting slots (14 and 15). 4) One end is provided with a bearing (18), and the outside of the two bearings (18) is provided with a pressure plate (19). The slots at the top and bottom of the two pressure plates (19) are provided with limit guide rods (110). Multiple combing grooves (111) are arrayed and passed through both sides of the two cable management boxes (12). A dustproof net (112) is connected to the slot at the top of the cabinet (11). The dustproof net (112) is fixedly installed to the cabinet (11) by bolts (113). A heat dissipation mechanism (2) is provided in the slots on both sides of the cabinet (11).

2. A gas-insulated ring main unit with a load switch according to claim 1, characterized in that: The heat dissipation mechanism (2) includes a motor (21), the bottom of which is fixedly connected to the top of the bracket (22).

3. A gas-insulated ring main unit with a load switch according to claim 2, characterized in that: The bottom of the bracket (22) is fixedly connected to the bottom of the inner wall of the slot opened on one side of the cabinet (11), the output end of the motor (21) is fixedly connected to the cooling fan (23), and the cooling fan (23) is provided with an installation shell (24).

4. A gas-insulated ring main unit with a load switch according to claim 1, characterized in that: The two mounting blocks (13) are fixedly installed on both sides of the inner wall of the cabinet (11), and the handle (15) is fixedly connected to the top of the cable management box (12).

5. A gas-insulated ring main unit with a load switch according to claim 1, characterized in that: The cable management box (12) is fixedly connected to a mounting bracket (16) on the side away from the mounting slot (14), and an adjusting screw (17) is threadedly connected to the threaded groove of the mounting bracket (16).

6. A gas-insulated ring main unit with a load switch according to claim 1, characterized in that: The end of the mounting screw near the mounting slot (14) is fixedly connected to the inside of the bearing (18), and the outside of the bearing (18) is fixedly connected to the inner wall of the slot opened on one side of the pressure plate (19).

7. A gas-insulated ring main unit with a load switch according to claim 1, characterized in that: One end of the limiting guide rod (110) is fixedly connected to the inner wall of the cable management box (12) near the limiting slot. The outside of the limiting guide rod (110) is slidably connected to the slot opened in the pressure plate (19). The cabinet (11) is equipped with a load switch body (31).

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