All-insulation energy-saving ring main unit based on vacuum arc extinguishing

Abstract

The utility model discloses an all-insulation energy-saving ring main unit based on vacuum arc extinguishing, which relates to the technical field of ring main units and comprises an insulation cabinet body, a cabinet door is arranged on one side of the insulation cabinet body, a wire arrangement module is arranged in the insulation cabinet body, an installation plate frame is fixedly connected to the inner wall of the insulation cabinet body, a movable module is arranged on the installation plate frame, and the movable module is connected with the movable module. A control panel is arranged outside the insulating cabinet body, the movable module comprises a sliding table, the sliding table slides on the top of the mounting plate frame, the bottom of the sliding table is fixedly connected with two sliding parts, two sliding grooves are formed in the mounting plate frame, and the two sliding parts slide in the corresponding sliding grooves. The all-insulation energy-saving ring main unit based on vacuum arc extinguishing disclosed by the utility model has the effects that core components can be integrally moved out of the cabinet body when maintenance is needed, an independent maintenance space is formed, an electrified area is prevented from being mistakenly touched, local maintenance is supported, maintenance steps are simplified, and power failure time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of ring main units, in particular to a fully-insulated energy-saving ring main unit based on vacuum arc extinction. Background Art

[0002] A ring main unit is a set of power transmission and distribution electrical equipment (high-voltage switchgear) installed in a metal or non-metal insulated cabinet or made into a assembled sectionalized ring main power supply unit. Its core part adopts a load switch and a fuse, and has the advantages of simple structure, small volume, low price, improving power supply parameters and performance, and power supply safety. It is widely used in distribution substations and box-type substations in load centers such as urban residential quarters, high-rise buildings, large public buildings, and industrial enterprises.

[0003] In the prior art, when maintaining a ring main unit, due to the narrow internal space of the traditional ring main unit, the operation space is limited during maintenance, tools are easily interfered with or even accidentally touched the live parts, and the peripheral components need to be repeatedly disassembled and assembled during maintenance, the process is cumbersome and the power outage period is prolonged, and the operation efficiency is low. Summary of the Utility Model

[0004] The utility model discloses a fully-insulated energy-saving ring main unit based on vacuum arc extinction, aiming at solving the technical problems of narrow internal space of the traditional ring main unit, limited operation space during maintenance, and low operation efficiency.

[0005] To achieve the above object, the utility model adopts the following technical solution: a fully insulated energy-saving ring main unit based on vacuum arc extinguishing, which includes an insulating cabinet body. A cabinet door is arranged on one side of the insulating cabinet body. A wire management module is arranged inside the insulating cabinet body, and a mounting plate frame is fixedly connected to the inner wall of the insulating cabinet body. An activity module is arranged on the mounting plate frame. A control panel is arranged outside the insulating cabinet body. The activity module includes a sliding table. The sliding table slides on the top of the mounting plate frame. Two sliding members are fixedly connected to the bottom of the sliding table. Two sliding grooves are formed on the mounting plate frame. Both sliding members slide in the corresponding sliding grooves. One airbag member one is arranged in each of the two sliding grooves. One end of each of the two airbag members one is fixedly connected to the corresponding sliding member. The wire management module includes two symmetrically arranged fixed cylinder members. Both fixed cylinder members are fixedly connected to the inner wall of the insulating cabinet body. An activity cylinder member is movably connected to the inner wall of each of the two fixed cylinder members. The same activity rod is fixedly connected to the opposite sides of the two activity cylinder members. Two airbag members two are arranged on the top of the mounting plate frame. One end of each of the two airbag members two is fixedly connected to a connecting pipe. The other ends of the two connecting pipes away from the airbag members two are fixedly connected to the corresponding airbag member one. A flow limiting valve is arranged on each of the two connecting pipes. Two sliding rods are fixedly connected to the mounting plate frame. The sliding table slides outside the two sliding rods. Springs are wound around the outside of both sliding rods. One end of each of the two springs is fixedly connected to one side inner wall of the insulating cabinet body, and the other end is fixedly connected to the sliding table. Two symmetrically arranged activity brackets are movably connected to the bottom of the sliding table.

[0006] By providing the activity module, when maintenance is required inside the ring main unit, after opening the flow limiting valve, the compressed spring will push the sliding table, compress the airbag member one, and make the gas in the airbag member one enter the airbag member two. Due to the flow limiting effect of the flow limiting valve, the rate of gas transportation in the connecting pipe is slower, so that the sliding table slides outwards at a uniform low speed, ensuring the stability of the insulating box, preventing damage to internal components caused by impact due to too fast speed; after the maintenance is completed, push the sliding table to reset, the airbag member one is restored, and the gas in the airbag member two is drawn back. After closing the flow limiting valve, the sliding table can be position-locked by air pressure. When maintenance is required, the core components can be integrally moved out of the cabinet body to form an independent maintenance space, avoiding accidental contact with the live area, supporting partial maintenance, simplifying the maintenance steps and shortening the power outage duration.

[0007] In a preferred solution, an insulating box is fixedly connected to the top of the sliding table, a sealing door is provided on one side of the insulating box, and a plurality of circuit breakers are fixedly connected to the inner wall of one side of the insulating box at equal distances, a vacuum arc extinguishing chamber is provided on one side of the plurality of circuit breakers, a plurality of isolating switches are fixedly connected to the inner wall of the top of the insulating box at equal distances, a copper bar is fixedly connected to the bottom of the plurality of isolating switches, one end of the plurality of copper bars away from the isolating switches is fixedly connected to the corresponding vacuum arc extinguishing chamber, a copper braid is fixedly connected to the top of the plurality of isolating switches, the inner walls of the two fixed cylinders are fixedly connected to mounting rods, and mounting grooves are provided on the two mounting rods, coil springs are fixedly connected in the two mounting grooves, one end of the two coil springs away from the mounting rods is fixedly connected to the inner wall of the corresponding movable cylinder, a plurality of rotating shafts are movably connected to the outside of the movable rod, and a plurality of copper braids slide on the outside of the corresponding rotating shafts.

[0008] By setting up a wire management module, the copper braided belt will be pulled and moved during maintenance. At this time, the copper braided belt will slide on the outside of the rotating shaft to limit the position. After the insulation box is reset, the elastic recovery of the coil spring drives the movable cylinder and the movable rod to rotate, and the copper braided belt will be re-tightened to avoid the copper braided belt from being misplaced and tangled when it is moving, which is convenient for sorting and maintenance. Replacing the rigid copper busbar with a flexible copper braided belt can absorb kinetic energy when encountering impact and vibration, avoiding damage caused by rigid connection.

[0009] From the above, it can be seen that the optimized fully insulated energy-saving ring main unit based on vacuum arc extinguishing provided by the utility model can move the core components out of the cabinet as a whole through the movable module, forming an independent maintenance space, avoiding accidental touching of live areas, supporting local maintenance, simplifying maintenance steps and shortening power outage duration. At the same time, the cables and wire management modules are linked to retract and retract to avoid the copper braided belt from being misplaced and tangled when it moves, which is convenient for sorting and maintenance. Replacing the rigid copper busbar with a flexible copper braided belt can absorb kinetic energy when encountering impact and vibration, avoiding damage caused by rigid connections. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall structure of a fully insulated energy-saving ring main unit based on vacuum arc extinguishing proposed by the utility model;

[0011] Figure 2 This is a schematic diagram of the internal structure of an insulating cabinet of a fully insulated energy-saving ring main unit based on vacuum arc extinguishing proposed by the utility model;

[0012] Figure 3 This is a schematic diagram of the internal structure of an insulation box of a fully insulated energy-saving ring main unit based on vacuum arc extinguishing proposed by the utility model;

[0013] Figure 4Top view of the structure at the mounting plate frame of a fully insulated energy-saving ring main unit based on vacuum arc extinguishing proposed by the present utility model;

[0014] Figure 5 Schematic diagram of the wire management module structure of a fully insulated energy-saving ring main unit based on vacuum arc extinguishing proposed by the present utility model.

[0015] In the attached drawings: 1, insulating cabinet body; 2, cabinet door; 3, control panel; 4, mounting plate frame; 5, movable module; 501, sliding table; 502, sliding rod; 503, spring; 504, movable bracket; 505, sliding member; 506, airbag member one; 507, airbag member two; 508, connecting pipe; 509, flow limiting valve; 6, wire management module; 601, fixed cylinder member; 602, mounting rod member; 603, spiral spring; 604, movable cylinder member; 605, movable rod; 606, rotating shaft; 7, insulating box; 8, sealing door; 9, circuit breaker; 10, vacuum arc extinguishing chamber; 11, copper busbar; 12, disconnector; 13, copper braid. Detailed implementation manners

[0016] 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 of the embodiments.

[0017] A fully insulated energy-saving ring main unit based on vacuum arc extinguishing disclosed by the present utility model is mainly applied to scenarios where the internal space of a traditional ring main unit is narrow, the operating space is limited during maintenance, and the operation efficiency is low.

[0018] Refer to Figures 1-5, a fully insulated and energy-saving ring main unit based on vacuum arc extinguishing, comprising an insulating cabinet body 1, a cabinet door 2 is arranged on one side of the insulating cabinet body 1, a wire management module 6 is arranged inside the insulating cabinet body 1, and a mounting plate frame 4 is fixedly connected to the inner wall of the insulating cabinet body 1. An active module 5 is arranged on the mounting plate frame 4. A control panel 3 is arranged outside the insulating cabinet body 1. The active module 5 includes a sliding table 501. The sliding table 501 slides on the top of the mounting plate frame 4. Two sliding members 505 are fixedly connected to the bottom of the sliding table 501. Two sliding grooves are formed on the mounting plate frame 4. The two sliding members 505 both slide in the corresponding sliding grooves. An airbag member one 506 is arranged in each of the two sliding grooves. One end of each of the two airbag members one 506 is fixedly connected to the corresponding sliding member 505. The wire management module 6 includes two symmetrically arranged fixed cylinder members 601. The two fixed cylinder members 601 are both fixedly connected to the inner wall of the insulating cabinet body 1. An active cylinder member 604 is movably connected to the inner wall of each of the two fixed cylinder members 601. The same active rod 605 is fixedly connected to the opposite sides of the two active cylinder members 604. Two airbag members two 507 are arranged on the top of the mounting plate frame 4. One end of each of the two airbag members two 507 is fixedly connected to a connecting pipe 508. The ends of the two connecting pipes 508 far from the airbag members two 507 are fixedly connected to the corresponding airbag members one 506. A flow limiting valve 509 is arranged on each of the two connecting pipes 508. Two sliding rods 502 are fixedly connected to the mounting plate frame 4. The sliding table 501 slides outside the two sliding rods 502. Springs 503 are wound around the outside of the two sliding rods 502. One end of each of the two springs 503 is fixedly connected to one side inner wall of the insulating cabinet body 1, and the other end is fixedly connected to the sliding table 501. Two symmetrically arranged active brackets 504 are movably connected to the bottom of the sliding table 501.

[0019] Refer to Figure 1 , Figure 3 and Figure 5, in a preferred embodiment, an insulating box 7 is fixedly connected to the top of the sliding table 501. A sealing door 8 is provided on one side of the insulating box 7, and a plurality of circuit breakers 9 are fixedly connected to the inner wall of one side of the insulating box 7 at equal intervals. A vacuum arc extinguishing chamber 10 is provided on one side of each of the plurality of circuit breakers 9. A plurality of disconnect switches 12 are fixedly connected to the inner wall of the top of the insulating box 7 at equal intervals. A copper busbar 11 is fixedly connected to the bottom of each of the plurality of disconnect switches 12. One end of each of the plurality of copper busbars 11 away from the disconnect switch 12 is fixedly connected to the corresponding vacuum arc extinguishing chamber 10. A copper braid 13 is fixedly connected to the top of each of the plurality of disconnect switches 12. Mounting rods 602 are fixedly connected to the inner walls of the two fixed cylinder members 601, and mounting grooves are formed in the two mounting rods 602. A coil spring 603 is fixedly connected to each of the two mounting grooves. One end of each of the two coil springs 603 away from the mounting rod 602 is fixedly connected to the inner wall of the corresponding movable cylinder member 604. A plurality of rotating shafts 606 are movably connected to the outside of the movable rod 605, and each of the plurality of copper braids 13 slides on the outside of the corresponding rotating shaft 606.

[0020] Working principle: When it is necessary to maintain the inside of the ring main unit, the cabinet door 2 is opened, and then the flow limiting valve 509 is opened. The elastic recovery of the compressed spring 503 pushes the sliding table 501 to slide outwards, driving the sliding member 505 to slide and compress the airbag member 506. The gas in the airbag member 506 enters the airbag member 507 through the connecting pipe 508 and the flow limiting valve 509. Due to the flow limiting effect of the flow limiting valve 509, the rate of the gas transported in the connecting pipe 508 is slower, so that the sliding table 501 slides outwards at a uniform low speed, ensuring the stability of the insulating box 7 and preventing the internal components from being damaged due to too fast speed and impact. After the maintenance is completed, after adjusting the opening of the flow limiting valve 509, the sliding table 501 is pushed to compress the spring 503 for reset. At this time, the sliding member 505 drives the airbag member 506 to recover, and the gas in the airbag member 507 is pumped back. After the sliding table 501 is completely reset, the flow limiting valve 509 is closed, and the position of the sliding table 501 is locked by air pressure. During the maintenance, the copper braid 13 will be pulled and moved. At this time, the copper braid 13 will slide on the outside of the rotating shaft 606 for limiting. After the insulating box 7 is reset, the elastic recovery of the coil spring 603 drives the movable cylinder member 604 and the movable rod 605 to rotate, and the copper braid 13 is re-wound, avoiding the position disorder and knotting of the copper braid 13 during movement, which is convenient for sorting and maintenance.

[0021] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The substitution may be the substitution of part of the structure, device, and method steps, or the substitution of the complete technical solution. Any equivalent substitution or change made according to the technical solution of the present invention and the inventive concept thereof should be covered by the protection scope of the present invention.

Claims

1. A fully insulated energy-saving ring main unit based on vacuum arc extinguishing, comprising an insulating cabinet (1), characterized in that: A cabinet door (2) is provided on one side of the insulating cabinet (1), a wiring module (6) is provided inside the insulating cabinet (1), and a mounting plate frame (4) is fixedly connected to the inner wall of the insulating cabinet (1), a movable module (5) is provided on the mounting plate frame (4), and a control panel (3) is provided outside the insulating cabinet (1), the movable module (5) comprises a sliding platform (501), the sliding platform (501) slides on the top of the mounting plate frame (4), two sliding members (505) are fixedly connected to the bottom of the sliding platform (501), and two sliding grooves are provided on the mounting plate frame (4). The two sliding members (505) slide in corresponding sliding grooves, and airbag members (506) are arranged in the two sliding grooves. One end of the two airbag members (506) is fixedly connected to the corresponding sliding member (505). The wiring module (6) comprises two mutually symmetrical fixed cylinder members (601). The two fixed cylinder members (601) are fixedly connected to the inner wall of the insulating cabinet (1), and the inner walls of the two fixed cylinder members (601) are movably connected to the movable cylinder member (604), and the opposite sides of the two movable cylinder members (604) are fixedly connected to the same movable rod (605).

2. A fully insulated energy-saving ring main unit based on vacuum arc extinguishing according to claim 1, characterized in that: Two airbag components (507) are arranged on the top of the mounting plate frame (4), one end of each of the two airbag components (507) is fixedly connected to a connecting pipe (508), one end of each of the two connecting pipes (508) away from the airbag component (507) is fixedly connected to the corresponding airbag component (506), and a flow limiting valve (509) is arranged on each of the two connecting pipes (508).

3. A fully insulated energy-saving ring main unit based on vacuum arc extinguishing according to claim 2, characterized in that: Two sliding rods (502) are fixedly connected to the mounting plate frame (4), the sliding platform (501) slides outside the two sliding rods (502), and springs (503) surround the outsides of the two sliding rods (502), one end of the two springs (503) is fixedly connected to an inner wall of one side of the insulating cabinet (1), and the other end is fixedly connected to the sliding platform (501).

4. A fully insulated energy-saving ring main unit based on vacuum arc extinguishing according to claim 3, characterized in that: The bottom of the sliding platform (501) is movably connected to two mutually symmetrical movable brackets (504).

5. The fully insulated energy-saving ring main unit based on vacuum arc extinguishing according to claim 1 is characterized in that: The top of the sliding platform (501) is fixedly connected to an insulating box (7), one side of the insulating box (7) is provided with a sealing door (8), and a plurality of circuit breakers (9) are fixedly connected to the inner wall of one side of the insulating box (7) at equal distances, one side of each of the plurality of circuit breakers (9) is provided with a vacuum interrupter (10), a plurality of disconnectors (12) are fixedly connected to the inner wall of the top of the insulating box (7) at equal distances, the bottoms of each of the plurality of disconnectors (12) are fixedly connected to a copper bar (11), one end of each of the plurality of copper bars (11) away from the disconnectors (12) is fixedly connected to a corresponding vacuum interrupter (10), and the tops of each of the plurality of disconnectors (12) are fixedly connected to a copper braided belt (13).

6. The fully insulated energy-saving ring main unit based on vacuum arc extinguishing according to claim 1 is characterized in that: The inner walls of the two fixed cylinders (601) are fixedly connected to mounting rods (602), and mounting grooves are provided on the two mounting rods (602). Coil springs (603) are fixedly connected in the two mounting grooves, and the ends of the two coil springs (603) away from the mounting rods (602) are fixedly connected to the inner walls of the corresponding movable cylinders (604).

7. A fully insulated energy-saving ring main unit based on vacuum arc extinguishing according to claim 6, characterized in that: The outside of the movable rod (605) is movably connected to a plurality of rotating shafts (606), and a plurality of copper braided belts (13) slide on the outside of corresponding rotating shafts (606).

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