A composite flexible insulation shield system for low voltage live-line work

Abstract

The application discloses a composite soft insulation shielding cover system for low-voltage live-line work, which comprises at least one composite soft insulation shielding cover which is molded by multiple layers of functional materials, wherein the multiple layers of functional materials comprise, from outside to inside, an insulation protection layer made of polymer elastomer, a thermal radiation reflection layer connected with the inner side of the insulation protection layer and used for reflecting high-temperature thermal radiation generated by arc, a thermal insulation layer connected with the inner side of the thermal radiation reflection layer and used for blocking the conduction of the high-temperature thermal radiation generated by arc to the inner side, and a mechanical support layer connected with the inner side of the thermal insulation layer and used for mechanical support. The thermal radiation reflection layer is completely encapsulated between the insulation protection layer and the thermal insulation layer. The application has excellent electrical insulation performance and can effectively resist high temperature and thermal radiation generated by arc.

Description

Technical Field

[0001] This invention relates to the field of electrical work safety protection technology, and in particular to a composite soft insulating shielding system for low-voltage uninterrupted power operation. Background Technology

[0002] In the operation and maintenance of low-voltage distribution networks, live-line work has become a routine practice to ensure power supply reliability. One of the greatest safety risks encountered during live-line work on low-voltage distribution networks, such as disconnecting live leads, replacing fuses, and installing electricity meters, is short-circuit arcing. Short-circuit arcing can generate temperatures exceeding 2000°C instantaneously, coupled with intense light radiation and powerful shock waves, causing significant harm to workers and equipment. Therefore, to ensure the safety of workers and equipment, reliable insulation shielding must be provided for adjacent live conductors, grounding conductors, and any potentially accessible conductive parts.

[0003] Currently, common insulating shielding tools on the market are mainly divided into two categories: rigid and flexible. Rigid insulating shields, such as insulating guards and insulating baffles, have the advantages of high mechanical strength and fixed shape, but their flexibility is poor. They are not well-suited for irregularly shaped equipment, such as wire joints, fuses, and knife switches, resulting in blind spots. They are also bulky and inconvenient to carry. Traditional flexible insulating shields, such as insulating blankets and insulating cloths, although flexible and adaptable, have limited insulation performance and comprehensive protection capabilities. In particular, they lack effective protection against the high temperature and thermal radiation generated by short-circuit arcs. In the event of an accidental short-circuit arc, they are easily burned or broken down, posing serious safety hazards. In addition, the existing selection of shielding tools is limited, their functions are relatively simple, and they lack systematic design. For example, the connection between shields is not convenient enough, and there are no effective means for the management and identification of shields, which also affects work efficiency and safety to some extent. Summary of the Invention

[0004] To address the above shortcomings, this invention provides a composite flexible insulating shielding system for low-voltage uninterrupted power supply operations, thereby overcoming the deficiencies of existing insulating shielding devices in terms of insufficient arc protection capability and lack of flexibility. The specific technical solution is as follows: A composite flexible insulating shielding system for low-voltage uninterrupted power supply operations includes at least one composite flexible insulating shielding. The shielding is molded from multiple layers of functional materials, which, from the outside to the inside, sequentially include: an insulating protective layer made of polymer elastomer, providing insulation and resistance to arc erosion; a heat radiation reflective layer made of metallized film, connected to the inner side of the insulating protective layer, reflecting high-temperature heat radiation generated by the arc; a heat insulation layer made of high-temperature resistant fiber felt or aerogel material, connected to the inner side of the heat radiation reflective layer, blocking the conduction of high-temperature heat radiation generated by the arc inwards; and a mechanical support layer made of flame-retardant fiber fabric, connected to the inner side of the heat insulation layer, providing overall mechanical support. The heat radiation reflective layer is completely encapsulated between the insulating protective layer and the heat insulation layer, and the edges of the composite flexible insulating shielding are insulated and sealed.

[0005] Preferably, the insulating protective layer adopts a molded layered structure, and the material of the insulating protective layer is made of one of silicone rubber, ethylene propylene rubber, or fluororubber; when used for voltage levels of 0.4kV and below, the thickness of the insulating protective layer is 2mm~5mm, and the volume resistivity is not less than 1.0×10⁻⁶. 13 Ω·cm; when used for voltage levels above 0.4kV to 1kV, the thickness of the insulating protective layer is 4mm~8mm, and the volume resistivity is not less than 1.0×10 Ω·cm; 13 Ω·cm.

[0006] Preferably, the outer surface of the insulating protective layer is provided with a textured structure for increasing the creepage distance. The textured structure is a continuous corrugation, parallel ribs, a dot array, and a labyrinth grid integrally formed on the outer surface of the insulating protective layer.

[0007] Preferably, the heat radiation reflective layer is made of one of aluminum foil, aluminized polyester film or aluminized polyimide film, and has a thickness of 0.02 mm to 0.1 mm.

[0008] Preferably, the heat insulation layer is made of one of aramid felt, pre-oxidized fiber felt, silica aerogel felt or ceramic fiber felt, with a thickness of 1mm to 5mm and a surface density of 200g / m² to 600g / m².

[0009] Preferably, the mechanical support layer is made of one of glass fiber cloth, aramid cloth or flame-retardant polyester fiber cloth, with a basis weight of 150g / m² to 400g / m².

[0010] Preferably, the edge of the shield is provided with a quick-connect structure; the quick-connect structure is one or more of a permanent magnet, a strap, Velcro, or snaps; when the quick-connect structure uses a permanent magnet, the permanent magnet is encased in a rubber protective sleeve.

[0011] Preferably, the shield is made into an irregularly shaped structure that matches the contour of a specific low-voltage power distribution equipment component. The irregularly shaped structure includes one or more of the following: a cylindrical structure for wrapping wire joints, an L-shaped structure for covering fuses, or a rectangular structure for shielding the distribution box door.

[0012] Preferably, it also includes a portable storage bag; the portable storage bag is made of flame-retardant material, and the interior of the portable storage bag is divided into multiple compartments by partitions or webbing, each compartment being used to accommodate the composite soft insulating shield of different shapes or sizes.

[0013] Preferably, the surface of the composite flexible insulating shield is provided with an identifiable data carrier; the data carrier is an RFID tag or a QR code, used to store the identification information and status information of the composite flexible insulating shield.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention adopts a multi-level protection architecture, constructing a multi-level protection system with clearly defined functions and synergistic effects. From the outside to the inside, it includes an insulating protective layer for electrical insulation and ablation resistance; a heat radiation reflective layer for reflecting heat radiation; a heat insulation layer for blocking heat conduction; and a mechanical support layer for supporting structural stability. Each layer performs its own function, achieving gradual attenuation and effective management of arc energy. The protective performance far exceeds that of existing insulating blankets and rubber mats made of a single material.

[0015] 2. This invention, by completely encapsulating the conductive thermal radiation reflective layer inside the insulating protective layer, fundamentally eliminates the risk of short circuits caused by the thermal radiation reflective layer contacting a live conductor, thus resolving a long-standing safety issue in such structures. Simultaneously, the insulating protective layer's ability to penetrate arc infrared radiation allows the built-in thermal radiation reflective layer to efficiently perform its heat reflection function, achieving thermal protection without sacrificing the electrical safety of the thermal radiation reflective layer.

[0016] 3. The composite flexible insulating shield of the present invention is made of multiple layers of functional materials through molding. The molding and composite process ensures the strong bond between the layers. In addition, each layer of material has aging resistance and weather resistance, enabling the composite flexible insulating shield to withstand repeated use and harsh on-site environments, resulting in a long service life and high reliability.

[0017] 4. This invention employs diverse quick-connect structures and irregularly shaped structures that match the contours of specific low-voltage power distribution equipment components, enabling rapid installation and disassembly on complex low-voltage power distribution equipment components. This greatly simplifies the operation process and significantly reduces the labor intensity of operators and the time they are exposed to the risk of electric arcs.

[0018] 5. The surface of the composite flexible insulating shield is provided with an identifiable data carrier. By scanning the data carrier with an external reading and writing device, the shield can be identified, its life cycle managed, and its usage records tracked, thereby achieving standardized and effective management of the composite flexible insulating shield. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic cross-sectional view of the multi-layer structure of the composite soft insulating shield of the present invention.

[0021] Figure 2 This is a schematic diagram illustrating the application scenario of the intelligent management system of the present invention.

[0022] In the diagram: 1. Insulating protective layer, 2. Heat radiation reflective layer, 3. Heat insulation layer, 4. Mechanical support layer. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Where the terms "first," "second," and "third" are used for descriptive purposes and to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0027] refer to Figure 1 This invention provides a composite flexible insulating shielding system for low-voltage uninterrupted power supply operations, comprising at least a composite flexible insulating shielding, a portable storage bag, and an intelligent management library based on a data carrier.

[0028] The composite flexible insulating shield is formed by molding multiple flexible structures, which, from the outside to the inside, include: an insulating protective layer 1, a heat radiation reflective layer 2, a heat insulation layer 3, and a mechanical support layer 4.

[0029] The insulating protective layer 1, a polymer elastomer, is manufactured using a molding process. This polymer elastomer is made from one of the following: silicone rubber, ethylene propylene rubber, or fluororubber. Firstly, this type of polymer elastomer, with its non-polar or weakly polar molecular chain structure, imparts stable hydrophobicity to the material, causing water to form isolated droplets rather than a continuous water film on its surface. This significantly suppresses surface leakage current in humid environments, improves flashover voltage, and ensures operational safety under harsh weather conditions such as humidity and condensation. Secondly, the cross-linked network structure of this type of polymer elastomer ensures excellent weather resistance (resistance to ultraviolet radiation, ozone, and damp heat aging). The saturated molecular backbone and stable chemical bonds (such as Si-O bonds, CC bonds, and CF bonds) effectively resist ultraviolet radiation, ozone corrosion, and alternating high and low temperature changes, delaying material aging and ensuring reliability for long-term outdoor use. Furthermore, this type of polymer elastomer possesses outstanding resistance to arc erosion. When exposed to the instantaneous high temperature of an arc, this type of polymer elastomer does not melt or drip, but instead forms a robust insulating residue through the carbonization of its cross-linked structure (or in other words, it can form an inert, high-resistance silicon / carbon residue under the high temperature of an arc). This residue (or silicon / carbon residue) has high resistance characteristics, which can effectively isolate the arc path, effectively retard flames and inhibit the further spread of the arc, thereby greatly reducing the risk of ignition by power frequency follow current and providing crucial protection for workers.

[0030] The insulating protective layer 1 is the first line of defense against the current generated by the electric arc. In addition to the selected insulating material and thickness, the outer surface of the insulating protective layer 1 is molded with a continuous corrugation, rib or bump array and other macroscopic texture structure, which can greatly increase the creepage distance and prevent the electric arc from flashing along the outer surface.

[0031] The thermal radiation reflective layer 2 is laminated to the inner side of the insulating protective layer 1 through a molding process to form a tight interface bond. The thermal radiation reflective layer 2 is preferably one of aluminum foil, aluminized polyester film, or aluminized polyimide film, and its thickness is controlled in the range of 0.02 mm to 0.1 mm. While ensuring excellent flexibility, it can achieve an infrared thermal radiation reflectivity of more than 80% or even more than 90%.

[0032] The core working mechanism of the thermal radiation reflective layer 2 is as follows: when the high-intensity infrared radiation generated by the short-circuit arc penetrates the outer insulating protective layer 1, the thermal radiation reflective layer 2, which is closely attached to the inner side of the insulating protective layer 1, can directly reflect most of it (especially the mid- and far-infrared bands where the main energy is concentrated) back, greatly reducing the radiant heat energy transmitted towards the workers. In addition, the outer insulating protective layer 1 itself has already initially blocked and attenuated the convective and conductive heat of the arc, which significantly reduces the heat load reaching the thermal radiation reflective layer 2. This ensures that the metallized thin film layer (such as aluminum foil, aluminized polyester film, or aluminized polyimide film) forming the thermal radiation reflective layer 2 can still maintain its structural integrity and functionality under extreme working conditions, avoiding failure due to overheating and melting.

[0033] More importantly, the heat radiation reflective layer 2 is completely encapsulated and insulated between the insulating protective layer 1 and the heat insulation layer 3, forming a "Faraday cage" type safety structure. This fundamentally eliminates any electrical contact between the heat radiation reflective layer 2 and external live or grounded components, perfectly resolving the technical contradiction that introducing a conductive functional layer into an insulating system can easily lead to short-circuit risks.

[0034] The thermal insulation layer 3 is bonded to the inner side of the heat radiation reflective layer 2 using a high-temperature resistant adhesive. This thermal insulation layer 3 is made of one of the following: aramid felt, pre-oxidized fiber felt, silica aerogel felt, or ceramic fiber felt, with a thickness of 1mm to 5mm and an areal density of 200g / m² to 600g / m². Utilizing the extremely low thermal conductivity of its material, the thermal insulation layer 3 blocks the inward conduction of residual heat after attenuation by the heat radiation reflective layer 2, thus forming a highly efficient thermal barrier in conjunction with the heat radiation reflective layer 2. When residual radiant heat and some conductive heat reach the thermal insulation layer 3 after reflection and attenuation by the heat radiation reflective layer 2, the thermal insulation layer 3, with its extremely low thermal conductivity of less than 0.05W / (m·K), establishes a high thermal resistance, maximizing the prevention of heat flow to the inward side, i.e., the side where the worker is located.

[0035] Mechanical support layer 4, as the inner layer closest to the work object or workers, is made of one or more of glass fiber cloth, aramid cloth or flame-retardant polyester fiber cloth through lamination / blending, and its basis weight is controlled in the range of 150g / m² to 400g / m². The mechanical support layer 4 serves as the mechanical load-bearing base and shape memory core of the entire composite flexible insulating shield. Its main functions include: 1. Providing structural rigidity, endowing the composite flexible insulating shield with the required tensile strength and tear resistance, enabling it to withstand mechanical stress during installation, use, and disassembly, and preventing damage due to localized stress; 2. Ensuring dimensional stability, the low elongation of the mechanical support layer 4 effectively suppresses excessive stretching and creep of the composite flexible insulating shield during use, maintaining the accuracy of the customized irregular contour for specific equipment, and ensuring the reliability of the shielding effect; 3. Ensuring interlayer integrity, as the base of the molded composite, the mechanical support layer 4 provides a firm attachment point for each functional layer, fundamentally eliminating the risk of separation, wrinkling, or peeling between layers under repeated bending and storage conditions, thereby ensuring the long-term reliability and functional consistency of the composite flexible insulating shield throughout its life cycle.

[0036] The edges of the composite flexible insulating shield undergo full-circumference, integrated insulating sealing treatment. This treatment not only effectively prevents interlayer peeling and moisture intrusion but also serves as a mounting base for quick-connect structures. These quick-connect structures are integrated into the ends or sealed edges of the composite flexible insulating shield through wrapping, embedding, or stitching. They take the form of one or more combinations of permanent magnets, straps, Velcro, or snaps to accommodate the shielding and fixing needs of equipment of different materials and profiles.

[0037] Crucially, when the quick-connect structure uses permanent magnets, its exterior is completely covered by a one-piece molded rubber protective sleeve made of the same material as the insulating protective layer 1. This design ensures complete insulation of the adsorption point while achieving rapid and secure adhesion to metal equipment, eliminating the risk of accidental grounding through the composite soft insulating shield.

[0038] To achieve comprehensive shielding, the composite flexible insulating shield is prefabricated into a series of irregularly shaped structures that match the contours of specific low-voltage power distribution equipment components. These irregularly shaped structures include, but are not limited to: contoured cylindrical structures for wrapping wire joints, L-shaped or U-shaped structures for covering fuses and their supports, and rectangular or frame-shaped structures for shielding distribution box doors. The irregularly shaped structures can be constructed using one or more of these methods. These irregularly shaped structures can be combined and overlapped through quick-connect structures at their edges to form a modular, fully covered field insulation and isolation solution.

[0039] When used for voltage levels of 0.4kV and below, the thickness of the insulating protective layer 1 is 2mm~5mm, and the volume resistivity is not less than 1.0×10⁻⁶. 13 Ω·cm. When used for voltage levels above 0.4kV to 1kV, the thickness of the insulating protective layer 1 is 4mm~8mm, and the volume resistivity is not less than 1.0×10 Ω·cm. 13 Ω·cm. That is, when the voltage level is relatively low (e.g., 0.4KV), materials with relatively lower insulation performance, such as silicone rubber or ethylene propylene rubber, can be used, and the thickness of the insulating protective layer 1 does not need to be too thick, for example, 3mm~4mm. When the voltage level is relatively high (e.g., 0.6KV), fluororubber with better insulation performance is used, or silicone rubber or ethylene propylene rubber is still used but the thickness of the insulating protective layer 1 is increased to 6mm. Alternatively, for better protection, an insulating material with better insulation performance can be selected while appropriately increasing the thickness of the insulating protective layer 1.

[0040] This invention further integrates a tool management and storage system, including a portable storage bag. The main body of the storage bag is made of flame-retardant materials such as flame-retardant canvas. Its interior is divided into multiple clearly marked compartments by customized partitions and elastic webbing, enabling the standardized and collision-proof storage of tools with different shapes and sizes of shields, thus physically ensuring the standardization and neatness of tools.

[0041] At the digital management level, each composite flexible insulating shield is equipped with an RFID tag or QR code as its unique digital identity. For example... Figure 2 As shown, scanning with a smartphone or a dedicated reader allows for instant access to the backend system of the intelligent management platform.

[0042] This backend system achieves a closed-loop digital management system for the entire lifecycle of composite flexible insulating shielding covers. Specific functions include: 1. Identification and asset traceability: linking production information through a unique ID; 2. Status monitoring and early warning: real-time status queries and early warnings provide information on key statuses and parameters such as the last inspection date, cumulative usage count, and estimated remaining lifespan; 3. Digitalized usage records: automatically recording the time, location (tower number), and responsible person for each operation, creating a traceable electronic history or record; 4. Scrap management: locking equipment that has reached its lifespan or is damaged to prevent misuse. Furthermore, the backend system of this intelligent management platform enables remote monitoring and real-time record updates.

[0043] The following specific embodiments further illustrate some of the application scenarios of the present invention.

[0044] Example 1: Rectangular distribution box shield: Make a rectangular shield (800mm×600mm) to cover the door of a standard distribution box.

[0045] The insulating protective layer 1 is made of 4mm thick gray silicone rubber, which is molded to form continuous corrugations with a height of 1.5mm on its outer surface. This silicone rubber has a volume resistivity >1.0×10¹³ Ω·cm and strong hydrophobicity.

[0046] The heat radiation reflective layer 2 is made of 0.05mm thick aluminized polyimide film, which is flexible and resistant to high temperature.

[0047] The thermal insulation layer 3 is made of 3mm thick pre-oxidized fiber felt with a surface density of 450g / m², which has excellent thermal insulation performance and flame retardancy.

[0048] The mechanical support layer 4 is made of aramid fabric with a weight of 300g / m², which is both strong and soft.

[0049] First, high-temperature resistant silicone adhesive is applied to both sides of the heat insulation layer 3. The heat insulation layer 3 is then stacked with the heat radiation reflective layer 2 and the preformed insulating protective layer 1. The mixture is then fed into a flat vulcanizing machine and hot-pressed at 125°C and 0.5MPa pressure for 10 minutes. After cooling, the edges are trimmed.

[0050] Secondly, a layer of silicone is applied to the edge of the molded shield through a second vulcanization process. During this process, four neodymium iron boron permanent magnets with a diameter of 15mm and a thickness of 5mm are embedded at both ends of the long side and the middle of the short side. The neodymium iron boron permanent magnets are completely encased in silicone with no exposed parts.

[0051] Finally, a high-temperature resistant RFID tag is heat-pressed onto one corner of the composite soft insulating shield.

[0052] Example 2: Irregular wire connector shield: To manufacture a cylindrical irregular-shaped shield for wrapping common wire connectors.

[0053] In this embodiment, the insulating protective layer 1 is made of 3mm thick red ethylene propylene rubber (red ethylene propylene rubber is not only easy to distinguish but also has good electrical properties); the materials used for the heat radiation reflective layer 2 and the heat insulation layer 3 are the same as in Example 1. The heat radiation reflective layer 2 is made of 0.05mm thick aluminized polyimide film because of its good flexibility and high temperature resistance; the heat insulation layer 3 is made of 3mm thick pre-oxidized felt with a surface density of 450g / m², which has excellent thermal insulation performance and is flame retardant. The mechanical support layer 4 is made of 200g / m² fiberglass cloth to reduce costs.

[0054] In terms of shape design, it is designed with a contoured structure that is open at both ends and bulges in the middle to ensure a good fit with the contour of the connector.

[0055] High-strength, self-locking plastic straps are sewn at both ends of the opening to achieve rapid tightening and fixation.

[0056] In addition, this cylindrical irregular-shaped shield can be used in conjunction with a rectangular shield to achieve comprehensive and customized shielding of complex work objects.

[0057] Example 3: System integration and intelligent management: Place the two types of shielding covers (2 rectangular and 3 irregular shapes) and other accessories into a portable storage bag. The storage bag has clear internal compartments and is secured with webbing.

[0058] The on-site operation process is as follows: The person in charge of the work uses an NFC-enabled smartphone to scan the RFID tag on the rectangular shield to be used.

[0059] The mobile app automatically displayed the following information: "Model: PDX-800x600; Status: Good; Next Inspection Date: 2024-11-30". The person in charge confirmed that the status was normal.

[0060] The workers attach the composite soft insulating shield, as described above, to the door of the distribution box and begin their work.

[0061] After the task is completed, the person in charge scans the label again, selects "Task Completed" in the drop-down menu of the APP, and the intelligent management database automatically records the usage information (including the task time, pole number, etc.) and updates the usage history.

[0062] The intelligent management system's backend database can provide early warnings about the inspection cycle of all shielding covers and alerts to appliances that are about to reach the end of their service life, enabling preventative replacement.

[0063] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0064] In this embodiment of the invention, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0065] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0066] In particular, the device embodiments are basically similar to the method embodiments, so they are described in a simpler way. For relevant details, please refer to the description of the method embodiments.

[0067] For ease of description, the above apparatus is described by dividing it into various functional units / modules. Of course, in implementing this invention, the functions of each unit / module can be implemented in one or more software and / or hardware.

[0068] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0069] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A composite flexible insulating shielding system for low-voltage uninterrupted power supply operations, characterized in that, It includes at least one composite flexible insulating shield, which is molded from multiple layers of functional materials, wherein the multiple layers of functional materials, from the outside to the inside, include: The insulating protective layer (1) is made of polymer elastomer and is used to provide insulation protection and withstand arc ablation. The heat radiation reflective layer (2) is made of a metallized thin film and is connected to the inner side of the insulating protective layer to reflect the high-temperature heat radiation generated by the electric arc. The heat insulation layer (3) is made of high-temperature resistant fiber felt or aerogel material and is connected to the inner side of the heat radiation reflective layer to block the high-temperature heat radiation generated by the electric arc from being conducted inward. The mechanical support layer (4) is made of flame-retardant fiber fabric and is connected to the inner side of the heat insulation layer to play an overall mechanical support role. The thermal radiation reflective layer (2) is completely encapsulated between the insulating protective layer (1) and the thermal insulation layer (3), and the edge of the composite soft insulating shield is treated with insulation sealing.

2. The composite flexible insulating shielding system for low-voltage uninterrupted power operation according to claim 1, characterized in that, The insulating protective layer (1) adopts a molded layered structure, and the material of the insulating protective layer (1) is made of one of silicone rubber, ethylene propylene rubber or fluororubber; when used for voltage levels of 0.4kV and below, the thickness of the insulating protective layer (1) is 2mm~5mm, and the volume resistivity is not less than 1.0×10 13 Ω·cm; When used for voltage levels above 0.4kV to 1kV, the thickness of the insulating protective layer (1) is 4mm~8mm, and the volume resistivity is not less than 1.0×10 Ω·cm; 13 Ω·cm.

3. A composite flexible insulating shielding system for low-voltage uninterrupted power supply operations according to claim 2, characterized in that, The outer surface of the insulating protective layer (1) is provided with a textured structure for increasing the creepage distance. The textured structure consists of continuous corrugations, parallel ribs, a dot array, and a labyrinth grid integrally formed on the outer surface of the insulating protective layer (1).

4. A composite flexible insulating shielding system for low-voltage uninterrupted power supply operations according to claim 1, characterized in that, The heat radiation reflective layer (2) is made of one of aluminum foil, aluminized polyester film or aluminized polyimide film, with a thickness of 0.02 mm to 0.1 mm.

5. A composite flexible insulating shielding system for low-voltage uninterrupted power supply operations according to claim 1, characterized in that, The heat insulation layer (3) is made of one of aramid felt, pre-oxidized fiber felt, silica aerogel felt or ceramic fiber felt, with a thickness of 1mm to 5mm and a surface density of 200g / m² to 600g / m².

6. A composite flexible insulating shielding system for low-voltage uninterrupted power supply operations according to claim 1, characterized in that, The mechanical support layer (4) is made of one of glass fiber cloth, aramid cloth or flame-retardant polyester fiber cloth, with a basis weight of 150g / m² to 400g / m².

7. A composite flexible insulating shielding system for low-voltage uninterrupted power supply operations according to claim 1, characterized in that, The edge of the shield is provided with a quick-connect structure; the quick-connect structure is one or more of a permanent magnet, a strap, Velcro, or snaps; when the quick-connect structure uses a permanent magnet, the permanent magnet is encased in a rubber protective sleeve.

8. A composite flexible insulating shielding system for low-voltage uninterrupted power supply operations according to claim 7, characterized in that, The shielding cover is manufactured into an irregularly shaped structure that matches the contour of a specific low-voltage power distribution equipment component. The irregularly shaped structure includes a cylindrical structure for wrapping wire joints, an L-shaped structure for covering fuses, or a rectangular structure for shielding the door of the distribution box.

9. A composite flexible insulating shielding system for low-voltage uninterrupted power supply operations according to any one of claims 1 to 8, characterized in that, It also includes a portable storage bag; the portable storage bag is made of flame-retardant material, and the interior of the portable storage bag is divided into multiple compartments by partitions or webbing, each compartment being used to accommodate the composite soft insulating shield of different shapes or sizes.

10. A composite flexible insulating shielding system for low-voltage uninterrupted power operation according to claim 9, characterized in that, The surface of the composite flexible insulating shield is provided with an identifiable data carrier; the data carrier is an RFID tag or a QR code, used to store the identification information and status information of the composite flexible insulating shield.

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