A ring main unit protection device

Abstract

The utility model provides a kind of ring main unit protection device, including the installation frame and control panel protective cover being set on ring main unit, the top surface of the installation frame is fixedly connected with ring main unit, the control panel protective cover is movably connected with installation frame, the position of one side of the installation frame side plate is further equipped with a movable limiting structure, the movable limiting structure includes installation base plate, installation expansion slot, movable round bar, tension spring, connecting plate and limiting block.

Description

Technical Field

[0001] This utility model relates to the field of ring main unit technology, and in particular to a ring main unit protection device. Background Technology

[0002] A ring main unit (RMU) is an electrical device consisting of a group of power transmission and distribution equipment (high-voltage switchgear) housed in a metal or non-metal insulated cabinet or assembled into a modular ring network power supply unit. Its core components utilize load switches and fuses. It offers advantages such as simple structure, small size, low cost, improved power supply parameters and performance, and enhanced power supply safety. It is widely used in substations and prefabricated substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and factories.

[0003] Ring main units require regular maintenance during use. Due to poor protection of the control panel, maintenance personnel can easily bump into and damage it during inspections. Alternatively, accidental touches on the control panel's operating units while inspecting other parts of the unit can alter pre-set parameters, affecting the unit's performance. Therefore, a device for protecting the control panel of a ring main unit is needed to address these issues. Utility Model Content

[0004] To address the shortcomings of the aforementioned technologies, this utility model provides a ring main unit protection device, including a mounting frame and a control panel protective cover mounted on the ring main unit. The mounting frame is fixedly connected to the top surface of the ring main unit, and the control panel protective cover is movably connected to the mounting frame. The mounting frame includes a base and a pair of side plates. A pair of sliding blocks are symmetrically arranged on both sides of the control panel protective cover. Both sliding blocks are cylindrical. Sliding grooves matching the sliding blocks are formed on the surfaces of the side plates opposite to the sliding blocks. The control panel protective cover is movably connected to the mounting frame through the cooperation of the pair of sliding blocks and sliding grooves. The mounting frame has a protective cover located on one side plate... A movable limiting structure is also provided at the location. The movable limiting structure includes a mounting base plate, a mounting telescopic groove, a movable round rod, a tension spring, a connecting plate, and a limiting block. The mounting base plate is fixedly connected to the side plate. The mounting telescopic groove is fixedly set on the mounting base plate. The shape and size of the movable round rod match the matching mounting telescopic groove. The connecting plate is fixedly set on the top of the movable round rod. The limiting block is fixedly set on the connecting plate. The movable round rod is set in the mounting telescopic groove and is movably connected to the mounting telescopic groove through the tension spring. A limiting groove matching the limiting block is opened at the position corresponding to the limiting block on the end face of the control panel protective cover.

[0005] By adopting the above technical solution, a mounting frame and a control panel protective cover are installed on the top of the ring main unit. A pair of cylindrical sliding blocks are installed on both sides of the control panel protective cover, and a pair of sliding grooves are installed on the side plates. This allows the control panel protective cover to be slidably and rotatably connected to the mounting frame. When the control panel is needed for setting up the ring main unit, it can be opened upwards and moved along the sliding grooves towards the end of the mounting frame, allowing it to be temporarily placed on the mounting frame. After the ring main unit is set up, the control panel protective cover can be repositioned. Pull out and lower the protective cover to cover the control panel, protecting it from accidental touches or bumps during routine maintenance. After the protective cover is pulled down, a movable limit mechanism can temporarily limit its operation, preventing accidental opening and loss of protection. Move the connecting plate upward and rotate it to position the limit block above the limit slot. Then release the connecting plate, which will be pulled down by the tension spring. Finally, fine-tune the connecting plate so that the limit block is engaged in the limit slot to temporarily limit the control panel cover.

[0006] A further feature of this invention is that an extension plate is fixedly connected to the end of the connecting plate, and a buckle is provided on the extension plate to assist the movement of the movable round rod.

[0007] By adopting the above technical solution, since an extension plate is fixedly connected to the end of the connecting plate, and the extension plate is provided with a buckle for assisting the movable round rod to move, the connecting plate can be lifted and rotated better by moving the buckle upward.

[0008] A further feature of this invention is that the base is provided with a stable limiting groove, and a pair of stable limiting plates matching the stable limiting groove are symmetrically provided on both sides of the protective cover of the control panel, and the pair of sliding blocks are disposed on the pair of stable limiting plates.

[0009] By adopting the above technical solution, since the base is provided with a stable limiting groove, and the two sides of the control panel protective cover are symmetrically provided with a pair of stable limiting plates that match the stable limiting groove, and the pair of sliding blocks are set on the pair of stable limiting plates, when the control panel needs to be adjusted and the control panel is used, the control panel protective cover may accidentally slip and reset due to insufficient pushing or other unexpected situations after being pulled up. By setting the stable limiting groove and the pair of stable limiting plates, after the control panel protective cover is placed on the mounting bracket, the control panel protective cover can remain stable, and at the same time, it will be limited by the stable limiting groove to prevent it from moving temporarily, thus avoiding accidental slippage and improving safety.

[0010] A further feature of this invention is that an auxiliary handle is provided at the end of the control panel protective cover.

[0011] By adopting the above technical solution, since an auxiliary handle is provided at the end of the control panel protective cover, it is easier to push and reset the control panel protective cover by holding the handle. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the structure of a ring main unit protection device according to a specific embodiment of the present utility model.

[0013] Appendix Figure 2 This is a schematic diagram of the structure of a ring main unit protection device according to a specific embodiment of the present utility model.

[0014] Appendix Figure 3 This is a partial exploded structural diagram of a ring main unit protection device according to a specific embodiment of the present utility model.

[0015] Appendix Figure 4 This is a partial exploded structural diagram of a ring main unit protection device according to a specific embodiment of the present utility model.

[0016] 1-Ring main unit, 2-Mounting bracket, 3-Control panel protective cover, 4-Base, 5-Side plate, 6-Sliding block, 7-Sliding groove, 8-Movable limit structure, 9-Mounting base plate, 10-Mounting telescopic groove, 11-Movable round rod, 12-Tension spring, 13-Connecting plate, 14-Limiting block, 15-Limiting groove, 16-Extension plate, 17-Snap ring, 18-Stable limit groove, 19-Stable limit plate, 20-Auxiliary handle. Detailed Implementation

[0017] like Figure 1-4The protective device for a ring main unit (RNB) includes a mounting frame 2 and a control panel protective cover 3 mounted on the RNB 1. The mounting frame is fixedly connected to the top surface of the RNB, and the control panel protective cover is movably connected to the mounting frame. The mounting frame includes a base 4 and a pair of side plates 5. A pair of sliding blocks 6 are symmetrically arranged on both sides of the control panel protective cover. Both sliding blocks are cylindrical. Sliding grooves 7 matching the sliding blocks are formed on the surfaces of the side plates opposite to the sliding blocks. The control panel protective cover is movably connected to the mounting frame through the cooperation of the sliding blocks and sliding grooves. A movable limiting structure is also provided on one side plate of the mounting frame. Structure 8, the movable limiting structure includes a mounting base plate 9, a mounting telescopic groove 10, a movable round rod 11, a tension spring 12, a connecting plate 13, and a limiting block 14. The mounting base plate is fixedly connected to the side plate. The mounting telescopic groove is fixedly set on the mounting base plate. The shape and size of the movable round rod match the matching mounting telescopic groove. The connecting plate is fixedly set on the top of the movable round rod. The limiting block is fixedly set on the connecting plate. The movable round rod is set in the mounting telescopic groove and is movably connected to the mounting telescopic groove through the tension spring. A limiting groove 15 matching the limiting block is opened at the position corresponding to the limiting block on the end face of the control panel protective cover.

[0018] By installing a mounting bracket and a control panel protective cover on the top of the ring main unit, and setting a pair of cylindrical sliding blocks on both sides of the control panel protective cover and a pair of sliding grooves on the side plates, the control panel protective cover can be slidably rotated and connected to the mounting bracket. When the control panel is needed for setting up the ring main unit, it can be opened upwards and moved along the sliding grooves towards the end of the mounting bracket, allowing it to be temporarily placed on the bracket. After the ring main unit setup is complete, the control panel protective cover can be pulled out again. Lower the protective cover to cover the control panel and protect it from accidental touches or bumps during routine maintenance. After the protective cover is pulled down, it can be temporarily stopped by the movable limit mechanism to prevent accidental opening and failure of the protective function. Move the connecting plate upward and rotate it so that the limit block rotates to the top of the limit slot. Then release the connecting plate, and the connecting plate will be pulled down by the tension spring. Finally, fine-tune the connecting plate so that the limit block is embedded in the limit slot to complete the temporary stop of the protective cover.

[0019] An extension plate 16 is fixedly connected to the end of the connecting plate, and a buckle 17 for assisting the movement of the movable round rod is provided on the extension plate.

[0020] Since an extension plate is fixedly connected to the end of the connecting plate, and the extension plate is provided with a buckle for assisting the movement of the movable round rod, the connecting plate can be lifted and rotated better by flicking the buckle upward.

[0021] The base is provided with a stable limiting groove 18, and a pair of stable limiting plates 19 matching the stable limiting groove are symmetrically provided on both sides of the control panel protective cover. The pair of sliding blocks are set on the pair of stable limiting plates.

[0022] Because the base is provided with a stable limiting groove, and the two sides of the control panel protective cover are symmetrically provided with a pair of stable limiting plates that match the stable limiting groove, and the pair of sliding blocks are set on the pair of stable limiting plates, when the control panel needs to be adjusted and the control panel is used, the control panel protective cover may accidentally slip and reset due to insufficient pushing or other unexpected situations after being pulled up. By setting the stable limiting groove and the pair of stable limiting plates, after the control panel protective cover is placed on the mounting bracket, the control panel protective cover can remain stable and will also be limited by the stable limiting groove to prevent it from moving temporarily, thus avoiding accidental slippage and improving safety.

[0023] An auxiliary handle 20 is provided at the end of the control panel protective cover.

[0024] Because the control panel cover has an auxiliary handle at its end, it is easier to push and reset the control panel cover by holding the handle.

Claims

1. A protective device for a ring main unit, comprising a mounting frame and a control panel protective cover disposed on the ring main unit, wherein the mounting frame is fixedly connected to the top surface of the ring main unit, and the control panel protective cover is movably connected to the mounting frame, characterized in that: The mounting frame includes a base and a pair of side plates. A pair of sliding blocks are symmetrically arranged on both sides of the control panel protective cover. Both sliding blocks are cylindrical. Sliding grooves matching the sliding blocks are formed on the surfaces of the side plates opposite to the sliding blocks. The control panel protective cover is movably connected to the mounting frame through the cooperation of the sliding blocks and sliding grooves. A movable limiting structure is also provided on one side plate of the mounting frame. The movable limiting structure includes a mounting base plate, a mounting telescopic groove, a movable round rod, a tension spring, a connecting plate, and a limiting block. The mounting base plate is fixedly connected to the side plates. The mounting telescopic groove is fixedly set on the mounting base plate. The shape and size of the movable round rod match the matching mounting telescopic groove. The connecting plate is fixedly set on the top of the movable round rod. The limiting block is fixedly set on the connecting plate. The movable round rod is set in the mounting telescopic groove and movably connected to the mounting telescopic groove through a tension spring. A limiting groove matching the limiting block is formed at the position corresponding to the limiting block on the end face of the control panel protective cover.

2. The ring main unit protection device according to claim 1, characterized in that: An extension plate is fixedly connected to the end of the connecting plate, and the extension plate is provided with a buckle for assisting the movement of the movable round rod.

3. The ring main unit protection device according to claim 1, characterized in that: The base is provided with a stable limiting groove, and a pair of stable limiting plates matching the stable limiting groove are symmetrically provided on both sides of the control panel protective cover. The pair of sliding blocks are set on the pair of stable limiting plates.

4. A ring main unit protection device according to claim 3, characterized in that: An auxiliary handle is provided at the end of the control panel protective cover.

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