Modular solid-seal insulation permanent-magnet vacuum ring network cabinet

Abstract

The utility model relates to vacuum ring main unit technical field discloses a kind of modular solid seal insulation permanent-magnetic vacuum ring main unit, including base, the upper surface fixed connection of base has cabinet, the surface of cabinet is hingedly connected with cabinet door, the side of cabinet is equipped with maintenance side plate, pull-out assembly is arranged between maintenance side plate and base, the inside fixed connection of base has three-position load switch, the bottom end of three-position load switch is movably inserted and is connected with modular solid seal pole column.The utility model in the present application, by adjusting reinforcing assembly, fixed seat, connecting screw rod cooperate, adjust nut adjustment reinforcing frame pressure, spring buffer, protective pad pad protection, realize modular solid seal pole column stable reinforcement and protection, adjusting screw rod, guide rod cooperate, drive adjusting seat fine adjustment modular solid seal pole column position, ensure and three-position load switch stable connection, and it is convenient to assemble and disassemble, improve overall stability and reliability.

Description

Technical Field

[0001] This utility model relates to the field of vacuum ring main unit technology, and in particular to a modular solid-sealed insulated permanent magnet vacuum ring main unit. Background Technology

[0002] Permanent magnet vacuum ring main unit is one of the important power distribution equipment in the power system. It is mainly used to open and close circuits and plays a role in control and protection in the power system.

[0003] Modular solid-encapsulated insulation is typically embodied in solid-encapsulated poles, also known as solid-encapsulated vacuum interrupters. These poles encapsulate the vacuum interrupter and current-carrying components such as upper and lower terminal blocks into a single unit, making the entire circuit breaker pole an integrated modular component. This modular design embeds conductive parts related to the vacuum interrupter and the circuit breaker into easily curable materials such as epoxy resin or thermoplastics, transforming surface insulation into volume insulation.

[0004] While existing ring main units (RNBs) can achieve circuit control functions, the reinforcement structure of the modular solid-sealed poles in RNBs often has shortcomings. Either the reinforcement force is not adjustable, making it difficult to adapt to different working conditions, or there is a lack of effective buffering and protection, which can easily damage the poles. Furthermore, the connection accuracy between the poles and the three-position load switch is not easy to guarantee, affecting the overall operational stability. At the same time, internal components cannot be inspected from the side of the cabinet, resulting in low maintenance efficiency and causing many problems in practical use. Therefore, a modular solid-sealed insulated permanent magnet vacuum RNB is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a modular solid-sealed insulated permanent magnet vacuum ring main unit, which aims to solve the problems of unstable pole reinforcement and inconvenient adjustment in the existing technology, affecting stability and maintenance efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a modular solid-sealed insulated permanent magnet vacuum ring main unit, comprising a base, a cabinet body fixedly connected to the upper surface of the base, a cabinet door movably hinged to the surface of the cabinet body, a maintenance side plate provided on the side of the cabinet body, a pull-out assembly provided between the maintenance side plate and the base, a three-position load switch fixedly connected inside the base, a modular solid-sealed pole connected movably to the bottom end of the three-position load switch, and an adjustment and reinforcement assembly provided between the modular solid-sealed pole and the maintenance side plate;

[0007] The adjustment and reinforcement assembly includes a fixed base, a mounting base, and a first mounting bracket. One side of the outer wall of the fixed base is fixedly connected to the inner wall of the maintenance side plate, and a connecting screw is fixedly connected to the other side of the outer wall of the fixed base. A spring and a reinforcement bracket are sequentially sleeved on the outer side of the connecting screw. An adjusting nut is threadedly connected to the end of the connecting screw. A protective pad is fixedly connected to the inner wall of the reinforcement bracket. The outer walls of both the mounting base and the first mounting bracket are fixedly connected to the inner wall of the maintenance side plate. An adjusting screw is rotatably connected between the mounting base and the first mounting bracket. A guide rod is fixedly connected to the upper surface of the mounting base. A second mounting bracket is fixedly connected between the top end of the guide rod and the inner wall of the maintenance side plate. An adjusting seat is provided between the guide rod and the adjusting screw.

[0008] As a further description of the above technical solution:

[0009] Two mounting bases are provided, and the two mounting bases are mirror images of each other along the central axis of the maintenance side plate.

[0010] As a further description of the above technical solution:

[0011] The outer side of the reinforcement frame is provided with a connecting through hole, the size of which is larger than the size of the connecting screw, and there are four connecting screws and four connecting through holes, with each of the four connecting screws corresponding to a connecting through hole.

[0012] As a further description of the above technical solution:

[0013] The adjusting screw and the guide rod are arranged symmetrically in mirror image along the central axis of the mounting base, and the outer wall of the adjusting screw is threadedly connected to the inner wall of the adjusting base, while the outer wall of the guide rod is movably connected to the inner wall of the adjusting base.

[0014] As a further description of the above technical solution:

[0015] The adjusting seat and the modular solid-sealed pole are fixedly connected by bolts.

[0016] As a further description of the above technical solution:

[0017] The pull-out assembly includes a slide and a locking bracket. The lower surfaces of the slide and the locking bracket are fixedly connected to the upper surface of the base. A sliding member is slidably connected between the inner sides of the slide and the locking bracket. A locking pin is fixedly connected to the upper surface of the sliding member.

[0018] As a further description of the above technical solution:

[0019] The locking bracket is provided in two parts, which are mirror images of each other along the central axis of the base. The upper surface of the locking bracket is provided with a locking hole, and the telescopic end of the locking pin is movably engaged with the inner wall of the locking hole.

[0020] As a further description of the above technical solution:

[0021] The inner wall of the slide block is provided with a pull-out limiting groove, and a pull-out limiting rod is movably connected inside the pull-out limiting groove. The end of the pull-out limiting rod is fixedly connected to the inner wall of the maintenance side plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by adjusting the reinforcement components, fixing base, connecting screw, etc., the pressure of the reinforcement frame is adjusted by adjusting the adjusting nut, the spring buffer, and the protective pad protects, so as to achieve stable reinforcement and protection of the modular solid-sealed pole. The adjusting screw, guide rod, etc. work together to drive the adjusting base to finely adjust the position of the modular solid-sealed pole, ensuring a stable connection with the three-position load switch, and making it easy to install and disassemble, thus improving the overall stability and reliability.

[0024] 2. In this utility model, the sliding assembly, slide block, and locking bracket work together with the sliding parts to enable flexible sliding of the maintenance side panel. The locking pin and locking hole work together to fix the position of the maintenance side panel. The sliding limit groove and sliding limit rod limit the sliding range and prevent detachment, thereby facilitating the maintenance of the cabinet side components, ensuring stable and safe operation, and improving maintenance efficiency. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a modular solid-sealed insulated permanent magnet vacuum ring main unit proposed in this utility model;

[0026] Figure 2 This is a schematic diagram showing the disassembled structure of the cabinet door and maintenance side panel of a modular solid-sealed insulated permanent magnet vacuum ring main unit proposed in this utility model.

[0027] Figure 3 This is a schematic diagram showing the disassembled structure of the maintenance side panel and pull-out assembly of a modular solid-sealed insulated permanent magnet vacuum ring main unit proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the disassembled structure of the maintenance side plate and adjustment and reinforcement components of a modular solid-sealed insulated permanent magnet vacuum ring main unit proposed in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Cabinet; 3. Cabinet door; 4. Inspection side panel; 5. Pull-out assembly; 51. Slide seat; 52. Locking bracket; 53. Sliding component; 54. Locking pin; 55. Pull-out limit groove; 56. Pull-out limit rod; 6. Three-position load switch; 7. Modular solid-sealed pole; 8. Adjustment and reinforcement assembly; 81. Fixed seat; 82. Connecting screw; 83. Spring; 84. Reinforcement frame; 85. Protective pad; 86. Adjusting nut; 87. Mounting seat; 88. First mounting bracket; 89. Second mounting bracket; 810. Adjusting screw; 811. Guide rod; 812. Adjusting seat. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-3This utility model provides an embodiment of a modular, solid-sealed, insulated permanent magnet vacuum ring main unit, comprising a base 1. A cabinet 2 is fixedly connected to the upper surface of the base 1, serving as the main frame of the entire ring main unit, supporting and protecting the internal components. A cabinet door 3 is hinged to the surface of the cabinet 2, allowing for flexible opening and closing for convenient daily inspection and operation of the cabinet 2's interior. A maintenance side panel 4 is provided on the side of the cabinet 2, a movable component facilitating maintenance of the components in the side area of ​​the cabinet 2. A pull-out assembly 5 is provided between the maintenance side panel 4 and the base 1, enabling the pull-out movement of the maintenance side panel 4 while simultaneously limiting and locking its movement. The pull-out assembly 5 includes a slide 51 and a locking bracket 52, the lower surfaces of which are fixedly connected to the upper surface of the base 1, providing space for the other components of the pull-out assembly 5. The mounting base includes two locking brackets 52, which are mirror images of each other along the central axis of the base 1. This ensures more stable and balanced locking when the maintenance side plate 4 is pulled out or closed. A locking hole is provided on the upper surface of each locking bracket 52, and the telescopic end of the locking pin 54 is movably engaged with the inner wall of the locking hole. The engagement of the locking pin 54 and the locking hole locks the maintenance side plate 4 in a specific position. A sliding member 53 is slidably connected between the inner sides of the slide block 51 and the locking brackets 52. A locking pin 54 is fixedly connected to the upper surface of the sliding member 53. The locking pin 54 is telescopic to achieve locking. A pull-out limiting groove 55 is provided on the inner wall of the slide block 51. A pull-out limiting rod 56 is movably connected inside the pull-out limiting groove 55, providing space for the pull-out limiting rod 56. The end of the pull-out limiting rod 56 is fixedly connected to the inner wall of the maintenance side plate 4, limiting the pull-out range of the maintenance side plate 4 and preventing it from being pulled out excessively.

[0033] Reference Figures 2-4 The base 1 has a three-position load switch 6 fixedly connected inside, which is the core control component in the ring main unit. It can realize the switching of three positions: closing, opening and grounding. The bottom of the three-position load switch 6 is movably connected to a modular solid-encapsulated pole 7. The modular solid-encapsulated pole 7 integrates and encapsulates related components, improves insulation performance and reliability, and is movably connected to the three-position load switch 6 for easy installation and replacement.

[0034] Reference Figure 2 and Figure 4An adjustment and reinforcement assembly 8 is provided between the modular solid-sealed pole 7 and the maintenance side plate 4 to reinforce the modular solid-sealed pole 7 and allow for adjustment according to actual conditions to ensure its installation stability. The adjustment and reinforcement assembly 8 includes a fixing seat 81, a mounting seat 87, and a first mounting bracket 88. One side of the outer wall of the fixing seat 81 is fixedly connected to the inner wall of the maintenance side plate 4. There are two fixing seats 81, which are mirror images of each other along the central axis of the maintenance side plate 4 to make the force more balanced. A connecting screw 82 is fixedly connected to the other side of the outer wall of the fixing seat 81. The connecting screw 82 provides an installation connection structure for components such as the spring 83 and the reinforcement bracket 84. The spring 83 is sequentially sleeved on the outside of the connecting screw 82. The reinforcing frame 84 and spring 83 serve as buffers and pre-tensioners. The reinforcing frame 84 directly reinforces the modular solid-sealing pole 7. A connecting through hole is provided on the outer side of the reinforcing frame 84, the size of which is larger than the size of the connecting screw 82, allowing for some adjustment space on the connecting screw 82. Four connecting screws 82 and four connecting through holes are provided, each corresponding to a specific hole, enhancing the stability of the reinforcement. An adjusting nut 86 is threaded to the end of the connecting screw 82, allowing adjustment of the pressure on the reinforcing frame 84 by tightening or loosening the adjusting nut 86. A protective pad 85, made of elastic material, is fixedly connected to the inner wall of the reinforcing frame 84. To avoid causing hard damage to the modular solid-sealed pole 7, the outer walls of the mounting base 87 and the first mounting bracket 88 are fixedly connected to the inner wall of the maintenance side plate 4. An adjusting screw 810 is rotatably connected between the mounting base 87 and the first mounting bracket 88, providing mounting support for the adjusting screw 810. A guide rod 811 is fixedly connected to the upper surface of the mounting base 87. The guide rod 811 guides the movement of the adjusting seat 812, ensuring its smooth movement. A second mounting bracket 89 is fixedly connected between the top of the guide rod 811 and the inner wall of the maintenance side plate 4, further fixing the guide rod 811 and enhancing structural stability. An adjusting seat 812 is provided between the guide rod 811 and the adjusting screw 810. The adjusting seat 812 is used for... The modular solid-sealed pole 7 is connected and driven for fine-tuning of its position. The adjusting screw 810 and the guide rod 811 are mirror-symmetrically arranged along the central axis of the mounting base 87. The outer wall of the adjusting screw 810 is threadedly connected to the inner wall of the adjusting base 812, so that the adjusting base 812 is subjected to balanced force. The outer wall of the guide rod 811 is movably connected to the inner wall of the adjusting base 812, ensuring that the adjusting base 812 moves stably along the guide rod 811. The adjusting base 812 and the modular solid-sealed pole 7 are fixedly connected by bolts, which facilitates disassembly and installation, while ensuring a firm connection. By rotating the adjusting screw 810, the modular solid-sealed pole 7 fixedly installed on the adjusting base 812 can be stably connected to the three-position load switch 6.

[0035] Working principle: When in use, the modular solid-sealed insulated permanent magnet vacuum ring main unit is installed on the base 1, and the cabinet body 2 serves as the main frame to protect the internal components. Daily operation can be carried out through the flexible opening and closing cabinet door 3. When it is necessary to inspect and maintain the internal components, convenient operation can be achieved by using the pull-out component 5 between the maintenance side plate 4 and the base 1: When the maintenance side plate 4 is pulled out, the slide 53 slides inside the slide seat 51 and the locking seat 52, and the pull-out limit rod 56 moves in the pull-out limit groove 55 to limit the pull-out range of the maintenance side plate 4 and prevent excessive pull-out. When the maintenance side plate 4 is moved to the appropriate position, the telescopic end of the locking pin 54 is engaged in the locking hole of the locking seat 52 to achieve stable locking of the maintenance side plate 4. After the maintenance is completed, the locking state of the locking pin 54 is released, and the maintenance side plate 4 is pushed back to its original position.

[0036] During equipment operation, the three-position load switch 6 inside the base 1 serves as the core control component, enabling switching between three positions: closed, open, and grounded. Its bottom end is secured by a modular solid-sealed pole 7 with movable insertion, ensuring circuit insulation and connection reliability. The adjustment and reinforcement assembly 8 between the modular solid-sealed pole 7 and the maintenance side plate 4 further ensures the stable operation of the modular solid-sealed pole 7. The connecting screw 82 on the fixed base 81, in conjunction with the spring 83, reinforcement frame 84, and adjusting nut 86, allows adjustment of the reinforcement force of the reinforcement frame 84 on the modular solid-sealed pole 7 by tightening the adjusting nut 86. The protective pad 85 prevents damage to the modular solid-sealed pole 7 during reinforcement. Simultaneously, rotating the adjusting screw 810 between the mounting base 87 and the first mounting frame 88, guided by the guide rod 811, causes the adjusting base 812 to fine-tune the position of the modular solid-sealed pole 7, ensuring a stable connection between it and the three-position load switch 6, and guaranteeing the normal operation of the entire ring main unit.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular, solid-sealed, insulated permanent magnet vacuum ring main unit, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected to a cabinet (2), and the surface of the cabinet (2) is movably hinged to a cabinet door (3). The side of the cabinet (2) is provided with a maintenance side plate (4), and a pull-out assembly (5) is provided between the maintenance side plate (4) and the base (1). A three-position load switch (6) is fixedly connected inside the base (1), and a modular solid-sealed pole (7) is movably plugged into the bottom end of the three-position load switch (6). An adjustment and reinforcement assembly (8) is provided between the modular solid-sealed pole (7) and the maintenance side plate (4). The adjustment and reinforcement assembly (8) includes a fixed base (81), a mounting base (87), and a first mounting bracket (88). One side of the outer wall of the fixed base (81) is fixedly connected to the inner wall of the inspection side plate (4), and a connecting screw (82) is fixedly connected to the other side of the outer wall of the fixed base (81). A spring (83) and a reinforcement bracket (84) are sequentially sleeved on the outer side of the connecting screw (82). An adjusting nut (86) is threaded to the end of the connecting screw (82), and a protective pad is fixedly connected to the inner wall of the reinforcement bracket (84). (85) The outer walls of the mounting base (87) and the first mounting bracket (88) are fixedly connected to the inner wall of the maintenance side plate (4). An adjusting screw (810) is rotatably connected between the mounting base (87) and the first mounting bracket (88). A guide rod (811) is fixedly connected to the upper surface of the mounting base (87). A second mounting bracket (89) is fixedly connected between the top end of the guide rod (811) and the inner wall of the maintenance side plate (4). An adjusting seat (812) is provided between the guide rod (811) and the adjusting screw (810).

2. The modular solid-sealed insulated permanent magnet vacuum ring main unit according to claim 1, characterized in that: Two fixing seats (81) are provided, and the two fixing seats (81) are mirrored along the central axis of the maintenance side plate (4).

3. The modular solid-sealed insulated permanent magnet vacuum ring main unit according to claim 1, characterized in that: The outer side of the reinforcing frame (84) is provided with a connecting through hole, wherein the size of the connecting through hole is larger than the size of the connecting screw (82), and there are four connecting screws (82) and four connecting through holes, and the four connecting screws (82) are provided in a one-to-one correspondence with the connecting through holes.

4. A modular, solid-sealed, insulated permanent magnet vacuum ring main unit according to claim 1, characterized in that: The adjusting screw (810) and the guide rod (811) are arranged symmetrically in mirror image along the central axis of the mounting base (87), and the outer wall of the adjusting screw (810) is threadedly connected to the inner wall of the adjusting base (812), and the outer wall of the guide rod (811) is movably connected to the inner wall of the adjusting base (812).

5. A modular, solid-sealed, insulated permanent magnet vacuum ring main unit according to claim 1, characterized in that: The adjusting seat (812) and the modular solid-sealing pole (7) are fixedly connected by bolts.

6. A modular, solid-sealed, insulated permanent magnet vacuum ring main unit according to claim 1, characterized in that: The pull-out assembly (5) includes a slide (51) and a locking bracket (52). The lower surfaces of the slide (51) and the locking bracket (52) are fixedly connected to the upper surface of the base (1). A slide (53) is slidably connected between the inner sides of the slide (51) and the locking bracket (52). A locking pin (54) is fixedly connected to the upper surface of the slide (53).

7. A modular, solid-sealed, insulated permanent magnet vacuum ring main unit according to claim 6, characterized in that: Two locking brackets (52) are provided, and the two locking brackets (52) are mirrored along the central axis of the base (1). The upper surface of the locking bracket (52) is provided with a locking hole, and the telescopic end of the locking pin (54) is movably engaged with the inner wall of the locking hole.

8. A modular, solid-sealed, insulated permanent magnet vacuum ring main unit according to claim 6, characterized in that: The inner wall of the slide (51) is provided with a pull-out limiting groove (55), and a pull-out limiting rod (56) is movably connected inside the pull-out limiting groove (55). The end of the pull-out limiting rod (56) is fixedly connected to the inner wall of the maintenance side plate (4).

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