A safety isolation device for power switch cabinet maintenance

Abstract

This invention provides a safety isolation device for the maintenance of power switchgear. The safety isolation device includes a cabinet, a side door, and a safety isolation mechanism located inside the cabinet. The safety isolation mechanism includes a main insulating baffle, two sets of symmetrically arranged lateral telescopic components, and two sets of support components. The two sets of lateral telescopic components are respectively located on the left and right sides of the main insulating baffle, and each lateral telescopic component includes a telescopic rod and a mounting base. Before maintenance, the extension length of the telescopic rods of the left and right lateral telescopic components is adjusted according to the width of the internal cavity of the cabinet. The rods are then attracted to the inner wall of the cabinet by magnetic blocks to adapt the lateral span of the main insulating baffle. The rotating disc of the support component rotates and raises the threaded rod, pushing the support legs downwards so that the bottom base firmly presses against the bottom plate of the cabinet, providing vertical support and reinforcement to the main insulating baffle from the bottom.

Description

Technical Field

[0001] This invention relates to the field of safety protection equipment for power distribution maintenance, and in particular to a safety isolation device for power switchgear maintenance. Background Technology

[0002] Power switchgear is the core power distribution equipment in a power distribution system. Routine operation and maintenance, emergency repairs, and component replacement all require power outages for inspection and maintenance. On-site maintenance follows a safety procedure of power outage, voltage testing, grounding, tagging, and installation of isolation protection. However, current isolation methods for switchgear maintenance have many shortcomings.

[0003] Currently, most temporary enclosures are made of plastic warning fences, simple barriers, and canvas. The barriers lack a fixed structure to fit the cabinet, are loose and easy to tip over. Accidental contact by personnel or slipping of tools can easily lead to accidental entry into adjacent live compartments. This makes it impossible to achieve precise zoning and isolation inside the switch cabinet, resulting in a high risk of electric shock and phase-to-phase short circuits.

[0004] Therefore, it is necessary to provide a safety isolation device for the maintenance of power switchgear to solve the above-mentioned technical problems. Summary of the Invention

[0005] This invention provides a safety isolation device for the maintenance of power switchgear, which solves the problem that most temporary barriers are made of plastic warning fences, simple baffles, or canvas, and the baffles lack a fixed structure to fit the cabinet, are loose and easy to tip over, and cause accidental contact by personnel. To solve the above-mentioned technical problems, the present invention provides a safety isolation device for the maintenance of power switchgear, including a cabinet, a side door, and a safety isolation mechanism disposed inside the cabinet. The safety isolation mechanism includes a main insulating baffle, two sets of symmetrically arranged lateral telescopic components, and two sets of support components. The two sets of lateral telescopic components are respectively disposed on the left and right sides of the main insulating baffle. Each lateral telescopic component includes a telescopic rod and a mounting base. The mounting base is rotatably connected to the end of the telescopic rod via a first rotating shaft. A magnet is fixed to the mounting base. Grooves are provided at both ends of the main insulating baffle, and the end of the telescopic rod is rotatably fitted into the groove via a second rotating shaft. The two sets of support components are symmetrically disposed on the bottom surface of the main insulating baffle. Each support component includes a threaded rod, a support leg, and a rotating disk. The threaded rod is threadedly connected to the top of the support leg, and the rotating disk is rotatably connected to the top of the support leg. The inner wall of the rotating disk is threadedly connected to the threaded rod. The upper end of the threaded rod is rotatably connected to the lower surface of the main insulating baffle, and a mounting base is fixed to the bottom end of the support leg. An insulating observation window is provided on the surface of the main insulating baffle.

[0006] Preferably, the telescopic rod of the lateral telescopic component is a sleeve telescopic structure, which can realize length extension and adjustment to adapt to the lateral installation width inside the cabinet.

[0007] Preferably, both the first and second rotating shafts can rotate circumferentially, and the main insulating stop can be rotated at an angle with the support of the telescopic rods on both sides.

[0008] Preferably, the support leg is a vertical screw structure, and rotating the rotating disk can drive the screw rod to rise and fall, thereby adjusting the support height and realizing the vertical support and positioning of the main insulation barrier.

[0009] Preferably, the insulated observation window is a transparent PC insulating board, and the louvers are opened on the side panel of the cabinet, which takes into account both the ventilation and heat dissipation of the cabinet and the isolation and protection of the external live area.

[0010] Preferably, the main insulation barrier is made of epoxy resin insulating flame-retardant board, which has high-voltage insulation and arc resistance properties, and the insulation level is suitable for 10kV~35kV high-voltage switchgear operating conditions.

[0011] Compared with related technologies, the safety isolation device for maintenance of power switchgear provided by the present invention has the following advantages:

[0012] The main insulating barrier is made of insulating and flame-retardant board, which can reliably isolate high-voltage live areas; the horizontal telescopic components on both sides provide horizontal limit and the bottom support components provide vertical support, and the two-way fixed structure is firm. The barrier will not shake or shift during maintenance operations, and the insulation isolation effect meets the standards, effectively preventing personnel and tools from accidentally touching live parts and avoiding the risk of electric shock and phase-to-phase short circuit.

[0013] The telescopic rod can extend and adjust its horizontal length to fit switch cabinets of different widths; the dual-shaft flip design allows for flexible installation and storage of baffles, and can be used in the internal chambers of most high and low voltage switch cabinets. One set of equipment can be used for multiple cabinet types, reducing the cost of supporting tooling.

[0014] The insulated observation window allows for direct observation of the maintenance process inside the cabinet while it is in isolation, without the need to remove the baffle. The louvers on the side of the cabinet serve both as isolation and ventilation, preventing heat buildup on the components inside. The entire assembly and disassembly can be completed quickly by a single person without the need for additional tools, shortening the preparation time for maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a preferred embodiment of a safety isolation device for the maintenance of power switchgear provided by the present invention;

[0016] Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below;

[0017] Figure 3 for Figure 1 The enlarged schematic diagram of section B is shown below;

[0018] Figure 4 for Figure 1 The enlarged schematic diagram of section C is shown.

[0019] The following are the labels in the diagram: 1. Cabinet, 2. Side door, 3. Insulated observation window, 4. Support assembly, 41. Threaded rod, 42. Support leg, 43. Rotating disc, 5. Base, 6. Main insulating baffle, 7. Lateral telescopic assembly, 71. Telescopic rod, 72. Mounting seat, 73. Rotating shaft one, 8. Louver, 9. Magnet, 10. Groove, 11. Rotating shaft two. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please refer to the following: Figure 1 This is a schematic diagram of a preferred embodiment of a safety isolation device for the maintenance of power switchgear provided by the present invention; Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below; Figure 3 for Figure 1 The enlarged schematic diagram of section B is shown below; Figure 4 for Figure 1 The enlarged schematic diagram of section C is shown. A safety isolation device for the maintenance of a power switchgear includes: a cabinet 1, a side door 2, and a safety isolation mechanism disposed inside the cabinet 1. The safety isolation mechanism includes a main insulating baffle 6, two sets of symmetrically arranged transverse telescopic components 7, and two sets of support components 4. The two sets of transverse telescopic components 7 are respectively disposed on the left and right sides of the main insulating baffle 6. Each transverse telescopic component 7 includes a telescopic rod 71 and a mounting base 72. The mounting base 72 is rotatably connected to the end of the telescopic rod 71 via a rotating shaft 73. A magnet 9 is fixed to the mounting base 72. Grooves 10 are provided at both ends of the main insulating baffle 6. The end of the telescopic rod 71 is rotatably mounted inside the groove 10 via a pivot 11; two sets of the support components 4 are symmetrically arranged on the bottom surface of the main insulating baffle 6. The support component 4 includes a threaded rod 41, a support leg 42 and a rotating disk 43. The threaded rod 41 is threadedly connected to the top of the support leg 42, and the rotating disk 43 is rotatably connected to the top of the support leg 42. The inner wall of the rotating disk 43 is threadedly connected to the threaded rod 41. The upper end of the threaded rod 41 is rotatably connected to the lower surface of the main insulating baffle 6, and the bottom end of the support leg 42 is fixedly mounted with a base 5; an insulating observation window 3 is opened on the surface of the main insulating baffle.

[0022] The telescopic rod 71 of the horizontal telescopic component 7 is a sleeve telescopic structure, which can realize length extension and adjustment to adapt to the horizontal installation width inside the cabinet 1.

[0023] Both the first rotating shaft 73 and the second rotating shaft 11 can rotate circumferentially, and the main insulating stop 6 can be rotated at an angle with the telescopic rods 71 ​​on both sides as support.

[0024] The support leg 42 is a vertical screw structure. Rotating the rotating disk 43 can drive the screw rod 41 to rise and fall, thereby adjusting the support height and realizing the vertical support and positioning of the main insulating stop 6.

[0025] The insulated observation window 3 is a transparent PC insulating board, and the louver 8 is opened on the side panel of the cabinet 1, which takes into account both the ventilation and heat dissipation of the cabinet and the isolation and protection of the external live area.

[0026] The main insulation barrier 6 is made of epoxy resin insulating flame-retardant board, which has high voltage insulation and arc resistance properties, and the insulation level is suitable for 10kV~35kV high voltage switchgear operating conditions.

[0027] The working principle of the safety isolation device for power switchgear maintenance provided by this invention is as follows:

[0028] Before maintenance, adjust the extension length of the telescopic rods 71 ​​of the left and right horizontal telescopic components 7 according to the width of the internal cavity of the cabinet 1. The rods are then attracted to the inner wall of the cabinet 1 by the magnet 9 to complete the horizontal span adaptation of the main insulation barrier 6. The rotating disk 43 of the rotating support component 4 drives the threaded rod 41 to rotate and rise, pushing the support leg 42 to extend downward, so that the bottom base 5 is firmly pressed against the bottom plate of the cabinet. The main insulation barrier 6 is vertically supported and reinforced from the bottom. Together with the telescopic rods 71 ​​on both sides, a two-way fixation is formed to complete the stable erection of the main insulation barrier 6.

[0029] Compared with related technologies, the safety isolation device for maintenance of power switchgear provided by the present invention has the following advantages:

[0030] The main insulating barrier 6 is made of insulating and flame-retardant board, which can reliably isolate high-voltage live areas; the two-sided horizontal telescopic components 7 provide horizontal limiting and the bottom support component 4 provides vertical support, with a firm two-way fixed structure. The barrier will not shake or shift during maintenance operations, and the insulation isolation effect meets the standards, effectively preventing personnel and tools from accidentally touching live parts and avoiding the risk of electric shock and phase-to-phase short circuit.

[0031] The telescopic rod 71 has an adjustable horizontal length to accommodate switch cabinets of different widths; the double-shaft flip design allows for flexible installation and storage of baffles, and can be used in the internal chambers of most high and low voltage switch cabinets. One set of equipment can be adapted to multiple cabinet types, reducing the cost of supporting tooling.

[0032] The insulated observation window 3 allows for direct observation of the maintenance situation inside the cabinet in the isolated state without the need to remove the baffle; the louvered windows 8 on the side of the cabinet serve both as isolation and protection as well as ventilation and heat dissipation, preventing heat accumulation in the components inside the cabinet; the entire assembly and disassembly can be completed quickly by a single person without the need for additional tools, shortening the preparation time for maintenance.

[0033] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A safety isolation device for the maintenance of power switchgear, characterized in that, The system includes a cabinet (1), a side door (2), and a safety isolation mechanism located inside the cabinet (1). The safety isolation mechanism includes a main insulating baffle (6), two sets of symmetrically arranged transverse telescopic components (7), and two sets of support components (4). The two sets of transverse telescopic components (7) are respectively located on the left and right sides of the main insulating baffle (6). Each transverse telescopic component (7) includes a telescopic rod (71) and a mounting base (72). The mounting base (72) is rotatably connected to the end of the telescopic rod (71) via a pivot (73). A magnet (9) is fixed to the mounting base (72). Grooves (10) are provided at both ends of the main insulating baffle (6). The ends of the telescopic rod (71) are... The two sets of support components (4) are symmetrically arranged on the bottom surface of the main insulating baffle (6). The support component (4) includes a threaded rod (41), a support leg (42) and a rotating disk (43). The threaded rod (41) is threaded to the top of the support leg (42), and the rotating disk (43) is rotatably connected to the top of the support leg (42). The inner wall of the rotating disk (43) is threaded to the threaded rod (41). The upper end of the threaded rod (41) is rotatably connected to the lower surface of the main insulating baffle (6). The bottom end of the support leg (42) is fixedly installed with a base (5). An insulating observation window (3) is opened on the surface of the main insulating baffle.

2. The safety isolation device for maintenance of power switchgear according to claim 1, characterized in that, The telescopic rod (71) of the horizontal telescopic component (7) is a sleeve telescopic structure, which can realize length telescopic adjustment and adapt to the horizontal installation width inside the cabinet (1).

3. A safety isolation device for the maintenance of a power switchgear according to claim 2, characterized in that, Both the first rotating shaft (73) and the second rotating shaft (11) can rotate circumferentially, and the main insulating stop (6) can be rotated at an angle with the telescopic rods (71) on both sides as support.

4. A safety isolation device for maintenance of power switchgear according to claim 3, characterized in that, The support leg (42) is a vertical screw structure. Rotating the rotating disk (43) can drive the screw rod (41) to rise and fall, thereby adjusting the support height and realizing the vertical support positioning of the main insulating stop (6).

5. A safety isolation device for the maintenance of a power switchgear according to claim 4, characterized in that, The insulating observation window (3) is a transparent PC insulating board, and the louver (8) is opened on the side panel of the cabinet (1) to take into account both the ventilation and heat dissipation of the cabinet and the isolation and protection of the external live area.

6. A safety isolation device for maintenance of power switchgear according to claim 5, characterized in that, The main insulating barrier (6) is made of epoxy resin insulating flame-retardant board, which has high voltage insulation and arc resistance properties.

Images