Insulation isolation protection device and method for maintenance of power distribution cabinet

Abstract

The invention discloses an insulation isolation protection device and method for power distribution cabinet maintenance, and belongs to the field of power equipment maintenance safety protection. The problems that an existing insulation isolation protection device for power distribution cabinet maintenance is low in protection safety, low in adaptability and not beneficial to storage and carrying are solved. According to the technical scheme, the device comprises an insulation screen plate assembly, the insulation screen plate assembly is detachably connected with an insulation pad assembly and an insulation opening and closing device, the insulation screen plate assembly, the insulation pad assembly and the insulation opening and closing device are connected with one another to define a box body structure with one end open, and the insulation screen plate assembly comprises a plurality of insulation plate units; the insulation screen plate assembly comprises a plurality of insulation plate units, every two insulation plate units are detachably connected, each insulation plate unit comprises a first isolation plate and a supporting part, the insulation pad assembly comprises a plurality of insulation pad units, every two insulation pad units are detachably connected, a plurality of second connecting parts are arranged at the joint of the insulation layer and the insulation screen plate assembly, and the second connecting parts are matched with the first isolation plates; the method is applied to electrical equipment maintenance.

Description

Technical Field

[0001] The invention provides an insulation isolation protection device and method for maintenance of a power distribution cabinet, belonging to the technical field of safety protection for maintenance of electric power equipment. Background Art

[0002] During the maintenance of power distribution cabinets, operators face multiple risks such as electric shock, arc burns, and foreign object intrusion. Traditional protective devices have the following core problems: 1. Fixed structure: Existing insulation protection facilities are mostly fixed frames, which are difficult to adapt to distribution cabinets of different sizes and layouts. Installation and disassembly require tools, which is time-consuming and labor-intensive. 2. Insulation protection defects: A single isolation material cannot effectively block arc splash and ground step voltage. In particular, the lack of insulation treatment on the ground in the maintenance area poses a risk of electric shock. 3. Single warning function: Traditional warning devices can only provide warning signals of a single color or fixed frequency, cannot be dynamically adjusted according to the hazard level, and have no linkage mechanism with protective devices; 4. Functional decentralization: Insulation isolation, warning, announcement display and other functions are set independently, resulting in bloated equipment, complicated operation, and difficulty in meeting efficient maintenance needs.

[0003] A Chinese utility model patent (publication number CN219587352U) provides an isolation fence device for substation secondary cabinet maintenance. Specifically, it discloses: a fence housing with open ends and two rotatable rods. The fence mechanism includes a scroll spring (which passes through the rods and is fixedly connected to them at one end) and an isolation cloth (one end of which is fixedly connected to multiple bearings, with hooks rotatably connected within the bearings, and the other end is fixedly connected to the scroll spring). When the isolation cloth is pulled, the scroll springs drive the rods to rotate, pulling the isolation cloth out and securing it to a hanging ring in the other frame housing via the bearings and hooks.

[0004] Although the above technical solution improves convenience to a certain extent, its protective safety is low and it occupies a large area. It is not suitable for areas with small space and is not conducive to storage and transportation. Summary of the Invention

[0005] In order to solve the technical problems of low protection safety, large footprint, low adaptability and inconvenience in storage and transportation of existing insulation isolation protection devices for distribution cabinet maintenance, the present invention proposes an insulation isolation protection device and method for distribution cabinet maintenance. The purpose is to improve the safety and convenience of maintenance operations by improving the hardware structure of the insulation isolation protection device for distribution cabinet maintenance or improving the combined connection of hardware modules and / or circuits.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: comprising an insulating screen assembly, the insulating screen assembly being detachably connected to an insulating pad assembly and an insulating opening and closing device, the insulating screen assembly, the insulating pad assembly and the insulating opening and closing device being interconnected to form a box structure with one end open; The insulating screen assembly includes a plurality of insulating plate units, and each of the insulating plate units can be detachably connected; The insulating plate unit includes a first isolation plate and a supporting component, the supporting component is detachably connected to two opposite sides of the first isolation plate, and the supporting component is provided with a first magnetic attraction member and a first connecting component; A warning device is provided at one end of the supporting component, and a moving component is provided at the end of the supporting component away from the warning device; The insulating pad assembly includes a plurality of insulating pad units, and each of the insulating pad units is detachably connected; The insulating pad unit includes an insulating layer and an anti-slip layer, a metal mesh layer is provided between the insulating layer and the anti-slip layer, and the insulating layer, the metal mesh layer and the anti-slip layer form a layered structure; A plurality of second connection components are provided at the connection between the insulating layer and the insulating screen assembly, and the second connection components cooperate with the first isolation plate.

[0007] Furthermore, both sides of the first isolation plate are connected to the supporting component via a plug-in structure.

[0008] Furthermore, a shading strip is provided at the connection between the first isolation plate and the supporting component.

[0009] Furthermore, the insulating opening and closing device includes two second isolation plates, one end of the two second isolation plates is fitted together, and the other ends of the two second isolation plates are detachably connected to the two ends of the insulating screen assembly, and the second isolation plates can rotate around the connection between the second isolation plates and the insulating screen assembly, and the two second isolation plates and the insulating screen assembly enclose a certain space; A sealing strip is provided at one end of the two second isolation plates that fit together, and a sound-absorbing component is provided between the sealing strip and the second isolation plates.

[0010] Furthermore, the second connecting component includes a third magnetic component, and the third magnetic component and the fourth magnetic component provided on the first isolation plate are attracted to each other.

[0011] Furthermore, an announcement placement bag is provided on one end surface of the first isolation plate, and an elastic drawstring is provided at the opening of the announcement placement bag.

[0012] Furthermore, the insulating layer is made of insulating rubber; and the anti-slip layer is made of anti-slip silicone.

[0013] Furthermore, the warning device includes a control circuit board, to which a controller is electrically connected, the power supply end of the controller is connected to a power module through a control switch, the signal input end of the controller is connected to a terminal device, and the signal output end of the controller is electrically connected to a three-color indicator light group.

[0014] Furthermore, the moving component is a self-locking roller.

[0015] A method for insulating and isolating a power distribution cabinet for maintenance, using the above-mentioned insulating and isolating a power distribution cabinet for maintenance, comprises the following steps: Step S1, building a three-dimensional protection module: selecting a corresponding number of insulation panel units according to the structure size of the power distribution cabinet to be repaired, sequentially splicing multiple insulation panel units through supporting components to form an insulation screen assembly, and connecting the insulation screen assembly and the insulation opening and closing device to each other to enclose a certain space for operation to prevent non-operating personnel from entering; Step S2: Laying the working surface protection module: Select a corresponding number of insulating mat units according to the structure size of the power distribution cabinet to be repaired, and sequentially splice multiple insulating mat units around the power distribution cabinet to be repaired to form an insulating mat assembly to isolate the induced voltage on the working surface of the working area and block the current conduction path between the power distribution cabinet and the working surface; The insulating pad assembly, the insulating screen assembly and the insulating opening and closing device are connected to each other to form a box structure with one end open; Step S3: driving the controller to output a corresponding warning signal according to the construction environment.

[0016] The present invention has the following beneficial effects compared to the prior art: 1. The insulating screen assembly of the present invention is spliced and connected by multiple insulating plate units, and the insulating pad assembly is spliced and connected by multiple insulating pad units. The insulating screen assembly, the insulating pad assembly and the insulating opening and closing device are detachably connected, so that a single person can quickly complete the assembly without the need for other tools. The insulating screen assembly, the insulating pad assembly and the insulating opening and closing device cooperate with each other to flexibly adjust the shape and size of the working area according to the specific construction environment, so as to be suitable for different construction environments, thereby expanding the scope of application. At the same time, it is convenient for assembly, storage, maintenance and mass production, and is economical.

[0017] 2. The setting of the warning device of the present invention can remotely convey the safety status of the work area to the workers through light signals, without the need for close inspection, thereby reducing potential risks; the warning device cooperates with the warning sign placed on the notice placement bag to play a dual prompting role, effectively reducing the risk of human misjudgment, and making it easier for passers-by and relevant personnel to plan their routes in advance, so that they can detour in advance, which helps to improve convenience.

[0018] 3. The first isolation plate, insulating pad unit and insulating opening and closing device of the present invention cooperate with each other to form an all-round three-dimensional protection system of space isolation, ground insulation and sealing protection, which can effectively resist dangerous factors such as electric arc, moisture and dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic structural diagram of the insulation isolation protection device for power distribution cabinet maintenance of the present invention; Figure 2 This is a schematic diagram of the assembly of the insulation isolation protection device for power distribution cabinet maintenance of the present invention when it is used to repair a high-voltage power distribution cabinet in a 220kV substation; Figure 3 This is a schematic diagram of the assembly of the insulation isolation protection device for power distribution cabinet maintenance of the present invention when it is used to repair a power distribution room in a subway tunnel; Figure 4 It is a structural schematic diagram of the insulating plate unit of the present invention; Figure 5 A schematic structural diagram of an insulating pad unit of the present invention; Figure 6 This is a schematic diagram of a circuit module of the warning device of the present invention; In the figure: 1 is the supporting component, 2 is the first isolation plate, 3 is the sealing strip, 4 is the handle structure, 5 is the silencer component, 6 is the second isolation plate, 7 is the moving component, 8 is the first connecting component, 9 is the announcement placement bag, 10 is the warning component, 11 is the elastic drawstring, 12 is the shading strip, 13 is the insulating layer, 14 is the metal mesh layer, 15 is the anti-slip layer, 16 is the insulating pad unit, 17 is the second connecting component, 18 is the distribution room, and 19 is the insulating pad assembly. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate relative positions or positional relationships, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] like Figures 1 to 6 As shown, the present invention provides an insulating isolation protection device for power distribution cabinet maintenance, including an insulating screen assembly. The insulating screen assembly is detachably connected to an insulating pad assembly 19 and an insulating opening and closing device. The insulating pad assembly 19 and the insulating opening and closing device are detachably connected. The insulating screen assembly and the insulating pad assembly 19 are perpendicular to each other. The insulating opening and closing device and the insulating pad assembly 19 are perpendicular to each other. The insulating pad assembly 19 is laid on a working surface 19 in the working area around the power distribution cabinet to be repaired. In this embodiment, the working surface 19 is the ground. The setting of the insulating pad assembly 19 can effectively block the current conduction path between the power distribution cabinet and the ground and the outside world. At the same time, the gap between the isolation plate and the support component 1 is sealed by the shading strip 12 to prevent light and arc leakage. The insulating screen assembly, the insulating pad assembly 19 and the insulating opening and closing device are connected to each other to form a box structure with an open top. The box structure with an open top is the working area. Specifically, the working area is a square space or a regularly shaped space. The insulating screen assembly and the insulating pad assembly 19 cooperate with each other to adjust the shape and size of the working area to adapt to the environment in which the distribution cabinet to be repaired is located and the structural size of the distribution cabinet.

[0023] The insulating screen assembly includes a plurality of insulating plate units, and the structures and sizes of the plurality of insulating plate units are the same or different, and the insulating plate units are detachably connected in pairs. The insulating plate unit includes a first isolation plate 2 and a support component 1, and the first isolation plate 2 is a square plate-shaped structure. The support component 1 is detachable to the opposite sides of the first isolation plate 2 through a plug-in structure. A warning device is fixedly connected to the top of the support component 1. Specifically, the support component 1 includes a support rod, and the support rod is detachably connected to the first isolation plate 2. An adjustment rod is slidably connected inside the support rod, and the warning device is fixedly mounted on the adjustment rod. The adjustment rod can slide along the axial direction of the support rod to adjust the height of the support component 1, that is, the adjustment rod can slide along the axial direction of the support rod to adjust the distance between the warning device and the working surface 19, so as to adapt to distribution cabinets of different heights, while expanding the warning range and making it easier for passers-by to notice it early. The end of the support component 1 away from the warning device is fixedly connected to the movable component 7, and the movable component 7 has a locking function. In this embodiment, the movable component 7 is a self-locking roller. The position of the support component 1 can be adjusted by moving the self-locking roller. The movable component 7 cooperates with the insulating screen assembly and the insulating pad assembly 19 to adjust the working area as required.

[0024] A first magnetic member and a first connecting member 8 are also fixedly connected to the support member 1. The first magnetic member on the support member 1 connects two insulating panel units to each other. The first connecting member 8 is a flexible belt-like structure. The first connecting member 8 bundles the two supporting members 1 together, enhancing the overall strength and stability of the insulating panel assembly, making it particularly suitable for use in windy or vibrating environments.

[0025] A light-shielding strip 12 is fixedly connected to the connection between the first isolation plate 2 and the support component 1. A flexible magnet is embedded in the light-shielding strip 12, and the light-shielding strip 12 is magnetically connected to a metal strip fixed to the edge of the first isolation plate 2. The magnetic connection between the flexible magnet and the metal strip ensures that the light-shielding strip 12 fits tightly against the isolation plate, effectively blocking light and dust. At the same time, it ensures that the light-shielding strip 12 can be quickly removed or installed without tools, facilitating cleaning or replacement and improving maintenance convenience. By using the light-shielding strip 12 to seal the gap between the first isolation plate 2 and the support component 1, light and arc leakage can be effectively prevented.

[0026] A notice bag 9 is fixedly attached to the outer wall of the first isolation panel 2. Made of transparent PVC, the bag has a waterproof barrier fixedly attached to its interior. An elastic cinch band 11 is fixedly attached to the top opening of the bag to effectively prevent rainwater from seeping in. Drain holes are provided at the bottom of the bag. The waterproof barrier, drain holes, and elastic cinch band 11 work together to maintain a dry environment within the bag and safeguard the integrity of the documents stored within, making it suitable for outdoor or humid maintenance environments. The edge of the bag is fixedly attached to the first isolation panel 2 via Velcro, facilitating removal and replacement of the bag. A retaining clip is fixedly attached to the bag to secure warning signs and documents such as maintenance notices and operating procedures, ensuring they are clearly visible to personnel and prevent them from being scattered or displaced. Placing warning signs and maintenance notices within the bag facilitates travel adjustments for passersby and personnel, allowing them to take safety precautions in advance.

[0027] The warning device includes a control circuit board, to which a controller is electrically connected. The power supply terminal of the controller is connected to a power module via a control switch. The signal input terminal of the controller is connected to a terminal device, and the signal output terminal of the controller is electrically connected to a three-color indicator light group. The three-color indicator light group includes a red light, a yellow light, and a blue light. The controller can drive the three-color indicator lights to output corresponding warning signals. Warning signals include danger signals, early warning signals, and safety prompt signals. When the terminal device sends a danger signal to the controller, the controller drives the red light to flash at a high frequency; when the terminal device sends an early warning signal to the controller, the controller drives the yellow light to flash at a low frequency; when the terminal device sends a safety prompt signal to the controller, the controller drives the blue light to stay on. The terminal device is a host computer, a mobile device, or an intelligent terminal device with communication capabilities. In this way, the safety status of the work area can be remotely communicated to operators through light signals, eliminating the need for close inspection and reducing potential risks. Driving the controller to control the three-color indicator lights to output different warning signals is a common setting for those in this field and will not be described in detail here.

[0028] The insulation pad assembly 19 includes multiple insulation pad units 16, which are detachably connected to each other. Second magnetic components are fixedly connected to the two side end surfaces of the insulation pad units 16, and the two insulation pad units 16 are connected to each other via the second magnetic components. The insulation pad units 16 include an insulation layer 13 and an anti-slip layer 15. A metal mesh layer 14 is fixedly connected between the insulation layer 13 and the anti-slip layer 15. The insulation layer 13, the metal mesh layer 14, and the anti-slip layer 15 form a layered structure, and the anti-slip layer 15 contacts the work surface (ground). The insulation layer 13 is made of insulating rubber, and the anti-slip layer 15 is made of non-slip silicone. Multiple second connecting components 17 are fixedly connected to the insulation layer 13. The second connecting components 17 include a third magnetic component. The third magnetic component cooperates with the fourth magnetic component fixedly connected to the bottom of the first isolation plate 2 to vertically fix the insulation screen assembly to the insulation pad assembly 19. The thickness of the insulation pad units 16 is adapted to the height of the insulation screen assembly from the ground in the work area. In this embodiment, two second connecting components 17 are fixedly connected to the insulating layer 13 . The two second connecting components 17 are distributed at the edges of the insulating layer 13 , and the two second connecting components 17 form an “L” shape.

[0029] The insulation opening and closing device includes two second isolation plates 6, one end of which fits together. The other ends of the two second isolation plates 6 are detachably connected to the ends of the insulation screen assembly via support components 1. The two second isolation plates 6 and the insulation screen assembly enclose a certain space, within which the power distribution cabinet to be repaired is located and within which workers can work. A sealing strip 3 is fixedly connected to the fitting ends of the two second isolation plates 6, and a sound-absorbing component 5 is fixedly connected between the sealing strip 3 and the second isolation plates 6.

[0030] A handle structure 4 is fixedly attached to the outer wall of the second isolation panel 6, facilitating the opening and closing of the insulation opening and closing mechanism, facilitating access for workers. The second isolation panel 6 also features a transparent observation window, constructed from double-layered tempered glass and laminated with a rubber band. This window allows workers to monitor tunnel traffic conditions in real time, preventing accidents caused by obstructed vision. The interlayer of the double-layered tempered glass is coated with an antistatic coating, which, in conjunction with the sealing strip 3, prevents dust and moisture from entering the work area, protecting the distribution cabinet equipment.

[0031] The present invention provides an insulation isolation protection method for power distribution cabinet maintenance, which uses the above-mentioned insulation isolation protection device for power distribution cabinet maintenance, including the following steps: Step S1, build a three-dimensional protection module: select a corresponding number of insulation panel units according to the structural size of the distribution cabinet to be repaired, and splice multiple insulation panel units in sequence through the support component 1 to form an insulation screen assembly. The insulation screen assembly and the insulation opening and closing device are interconnected to enclose an operating area with a certain space to prevent non-operating personnel from entering.

[0032] Specifically, multiple first isolation panels 2 are selected, and each first isolation panel 2 is connected to a support component 1 on both sides via a plug-in structure. Multiple first isolation panels 2 are sequentially connected together via the first magnetic attraction member on the support component 1, and are spliced together to form an insulation screen assembly. A second isolation panel 6 is connected to each end of the insulation screen assembly. The two second isolation panels 6 fit together at the ends away from the insulation screen assembly, so that the insulation screen assembly and the insulation opening and closing device are connected to each other to form an operating area with a certain space, ensuring that the distribution cabinet is completely covered, so that the distribution cabinet to be repaired is enclosed in the operating area. The size and shape of the operating area can be adjusted by moving the movable component 7, and the stability of the insulation screen assembly is enhanced by connecting the first connecting components 8 on two adjacent support components 1 together.

[0033] Step S2: Laying the working surface protection module: Select a corresponding number of insulating pad units 16 according to the structure size of the power distribution cabinet to be repaired. Multiple insulating pad units 16 are sequentially spliced around the power distribution cabinet to be repaired to form an insulating pad assembly 19 to isolate the induced voltage on the working surface of the working area and block the current conduction path between the power distribution cabinet and the working surface; The insulating pad assembly 19, the insulating screen assembly and the insulating opening and closing device are connected to each other to form a box structure with one end open.

[0034] Specifically, a plurality of insulating pad units 16 are selected, and the plurality of insulating pad units 16 are tightly spliced in sequence around the power distribution cabinet to be repaired. The insulating pad units 16 located at the edge of the working area are attracted to each other through the second connecting component 17 and the fourth magnetic component fixedly connected to the first isolation plate 2, so that the insulating pad assembly 19, the insulating screen assembly and the insulating opening and closing device are connected to each other to form a box structure with one end open, so as to form a relatively closed insulating space.

[0035] The operator opens the closed insulating space by rotating the second isolation plate 6 of the insulating opening and closing device and enters the working area. When the insulating opening and closing device is closed, the operator can check the status of the distribution cabinet and the maintenance status of the working area through the observation window.

[0036] Step S3: driving the controller to output a corresponding warning signal according to the construction environment.

[0037] Among them, the order of step S1 and step S2 is not restricted here. The operator can first lay the working surface protection module and then build the three-dimensional protection module. As long as the working surface protection module and the three-dimensional protection module are connected to each other to form a box structure with one end open, it will be fine.

[0038] like Figure 2 As shown, when the insulation isolation protection device for maintenance of the distribution cabinet of the present invention is used to repair the high-voltage distribution cabinet (height 2.5m × width 1.2m × depth 0.8m) in a 220kV substation, the height of the support component 1 is adjusted to not less than 2.5m by sliding the adjustment rod along the axial direction of the support rod, and a warning sign with the words "High Voltage Danger" is placed in the notice placement bag 9, and the drive controller outputs a danger signal, that is, drives the red light to flash continuously at a high frequency. After experimental verification, the time for operators to complete the deployment of high-voltage distribution cabinet protection in a 220kV substation can be controlled within 15 minutes, which saves more than 50% of the deployment time compared with traditional protection facilities, and significantly improves the efficiency of power maintenance operations. The insulating pad assembly 19 of the present invention successfully resists accidental discharge arcs, provides safety protection for operators, and after testing, the step voltage in the operating area does not exceed 10V, which meets the safety voltage threshold requirements in the "Electric Power Safety Work Regulations".

[0039] like Figure 3As shown, when the insulation isolation and protection device for power distribution cabinet maintenance of the present invention is applied to the maintenance of a 3m wide distribution room 18 in a subway tunnel, due to space constraints within the tunnel, an insulation opening and closing device can be installed relative to the distribution room 18 to facilitate access for workers. Multiple insulation panel units are assembled into an L-shaped insulation screen assembly, measuring 2m long and 1.5m wide. The L-shaped insulation screen assembly, in conjunction with the insulation opening and closing device and the subway tunnel wall, forms a square workspace. The support rod and adjustment rod cooperate to adjust the height of the support component 1 to 2.2m. A reflective warning sign with the words "Repairs in Progress" is placed within the notice bag 9. The controller outputs a warning signal, causing the yellow light to flash at a low frequency. To prevent tunnel water seepage from soaking documents placed within the notice bag 9, the elastic cinch band 11 fixed to the opening of the notice bag 9 can be tightened. Experimental results show that workers can install the insulation isolation and protection device for power distribution cabinet maintenance in a subway tunnel within ten minutes. The silencer 5 reduces noise levels to below 65dB, minimizing interference with communications within the tunnel. Furthermore, the transparent observation window allows workers to monitor tunnel conditions in real time, preventing accidents caused by obstructed vision.

[0040] It should also be noted that the plug-in structure is a connection structure commonly used by those skilled in the art and will not be described in detail here.

[0041] Regarding the specific structure of the present invention, it should be noted that the connection relationship between the various component modules adopted in the present invention is definite and feasible. Except for those specifically described in the embodiments, the specific connection relationship can bring about corresponding technical effects and solve the technical problems raised by the present invention without relying on the execution of corresponding software programs. The components, modules, models of specific components appearing in the present invention, the connection methods between each other, and the conventional usage methods and expected technical effects brought about by the above-mentioned technical features, except for those specifically described, all belong to the disclosed contents in patents, journal articles, technical manuals, technical dictionaries, and textbooks that can be obtained by technical personnel in this field before the application date, or belong to the existing technologies such as conventional technology and common knowledge in this field. There is no need to elaborate, so that the technical solution provided in this case is clear, complete, and feasible, and the corresponding physical products can be reproduced or obtained based on this technical means.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An insulation isolation protection device for power distribution cabinet maintenance, characterized in that: The insulating screen assembly comprises an insulating pad assembly (19) and an insulating opening and closing device which are detachably connected to the insulating screen assembly. The insulating screen assembly, the insulating pad assembly (19) and the insulating opening and closing device are interconnected to form a box structure with one end open. The insulating screen assembly includes a plurality of insulating plate units, and each of the insulating plate units can be detachably connected; The insulating plate unit comprises a first isolation plate (2) and a supporting component (1), wherein the supporting component (1) is detachably connected to two opposite sides of the first isolation plate (2), and a first magnetic attraction member and a first connecting component (8) are provided on the supporting component (1); A warning device is provided at one end of the support component (1), and a moving component (7) is provided at the end of the support component (1) away from the warning device; The insulating pad assembly (19) comprises a plurality of insulating pad units (16), and two insulating pad units (16) are detachably connected; The insulating pad unit (16) comprises an insulating layer (13) and an anti-slip layer (15), a metal mesh layer (14) is provided between the insulating layer (13) and the anti-slip layer (15), and the insulating layer (13), the metal mesh layer (14) and the anti-slip layer (15) form a layered structure; A plurality of second connection components (17) are provided at the connection between the insulating layer (13) and the insulating screen assembly, and the second connection components (17) cooperate with the first isolation plate (2).

2. The insulation isolation protection device for power distribution cabinet maintenance according to claim 1 is characterized in that: Both sides of the first isolation plate (2) are connected to the supporting component (1) via a plug-in structure.

3. The insulation isolation protection device for power distribution cabinet maintenance according to claim 1 is characterized in that: A light shielding strip (12) is provided at the connection between the first isolation plate (2) and the supporting component (1).

4. The insulation isolation protection device for power distribution cabinet maintenance according to claim 1, characterized in that: The insulating opening and closing device comprises two second isolation plates (6), one end of the two second isolation plates (6) is fitted with each other, the other ends of the two second isolation plates (6) are detachably connected to the two ends of the insulating screen assembly, and the second isolation plates (6) can rotate around the connection between the second isolation plates (6) and the insulating screen assembly, and the two second isolation plates (6) and the insulating screen assembly enclose a certain space; A sealing strip (3) is provided at one end of the two second isolation plates (6) that fit together, and a silencer component (5) is provided between the sealing strip (3) and the second isolation plates (6).

5. The insulation isolation protection device for power distribution cabinet maintenance according to claim 1, characterized in that: The second connecting component (17) comprises a third magnetic attraction component, and the third magnetic attraction component and a fourth magnetic attraction component provided on the first isolation plate (2) are attracted to each other.

6. The insulation isolation protection device for power distribution cabinet maintenance according to claim 1, characterized in that: An announcement placement bag (9) is also provided on one end surface of the first isolation plate (2), and an elastic drawstring (11) is provided at the opening of the announcement placement bag (9).

7. The insulation isolation protection device for power distribution cabinet maintenance according to claim 1, characterized in that: The insulating layer (13) is made of insulating rubber material; the anti-slip layer (15) is made of anti-slip silicone material.

8. The insulation isolation protection device for power distribution cabinet maintenance according to claim 1, characterized in that: The warning device includes a control circuit board, a controller is electrically connected to the control circuit board, a power supply end of the controller is connected to a power module through a control switch, a signal input end of the controller is connected to a terminal device, and a signal output end of the controller is electrically connected to a three-color indicator light group.

9. The insulation isolation protection device for power distribution cabinet maintenance according to claim 1, characterized in that: The moving component (7) is a self-locking roller.

10. An insulation isolation protection method for power distribution cabinet maintenance, characterized in that: The insulation isolation protection device for maintenance of a power distribution cabinet according to any one of claims 1 to 9 comprises the following steps: Step S1, building a three-dimensional protection module: selecting a corresponding number of insulation board units according to the size of the distribution cabinet to be repaired, and sequentially splicing the multiple insulation board units through the support component (1) to form an insulation screen assembly, and the insulation screen assembly and the insulation opening and closing device are connected to each other to enclose an operating area with a certain space to prevent non-operating personnel from entering; Step S2, laying the working surface protection module: selecting a corresponding number of insulating pad units (16) according to the structural size of the power distribution cabinet to be repaired, and sequentially splicing the plurality of insulating pad units (16) around the power distribution cabinet to be repaired to form an insulating pad assembly (19) to isolate the working surface induced voltage in the working area and block the current conduction path between the power distribution cabinet and the working surface; The insulating pad assembly (19), the insulating screen assembly and the insulating opening and closing device are connected to each other to form a box structure with one end open; Step S3: driving the controller to output a corresponding warning signal according to the construction environment.

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