Rodent-proof, termite-proof, mineral-insulated flexible fire-resistant cable

Abstract

This application relates to the field of cable technology, providing a rodent-proof and termite-proof mineral-insulated flexible fire-resistant cable. The rodent-proof and termite-proof mineral-insulated flexible fire-resistant cable includes a cable core, a transition layer, a protective layer, and multiple protective capsules. The transition layer includes a mineral insulation layer and a fire-resistant layer. The mineral insulation layer wraps around the outer surface of the cable core, and the fire-resistant layer wraps around the outer surface of the mineral insulation layer. The protective layer wraps around the outer surface of the transition layer. Multiple protective capsules are detachably disposed on the outer surface of the protective layer, and the protective capsules are filled with materials that have rodent-proof and termite-proof effects. The protective capsules are at least partially exposed to the outside air. The rodent-proof and termite-proof mineral-insulated flexible fire-resistant cable provided by this application makes the cable easy to bend, improves the cable's flexibility, and extends its service life. When damaged, only the protective capsules need to be replaced, which helps reduce maintenance costs and the time required for cable replacement compared to replacing the entire cable, ensuring continuous and reliable cable operation.

Description

Technical Field

[0001] This application relates to the field of cable technology, and in particular to a rodent-proof, termite-proof mineral-insulated flexible fireproof cable. Background Technology

[0002] A cable is an electrical conductor used to transmit electrical energy or signals, and it typically consists of a metallic conductor, an insulation layer, and a protective sheath.

[0003] Cables in related technologies are typically laid in complex outdoor environments, where they must be protected from damage by rodents and termites, as well as from high temperatures and wildfires. Existing technologies usually improve the cable's resistance to damage and interference by increasing the hardness and thickness of the protective sheath. However, this reduces the cable's mobility, and when the cable is damaged by rodents or termites, the entire section often needs to be replaced, resulting in high maintenance costs and difficult maintenance operations. Summary of the Invention

[0004] This application provides a rodent-proof, termite-proof, mineral-insulated, flexible, fire-resistant cable, which can improve the technical problems in related technologies where cables have poor mobility due to the use of a strong protective sheath, and require complete replacement when damaged, which is difficult to operate.

[0005] This application provides a rodent-proof, termite-proof, mineral-insulated, flexible, fire-resistant cable, comprising:

[0006] Cable core;

[0007] The transition layer includes a mineral insulation layer and a fireproof layer. The mineral insulation layer is wrapped around the outer surface of the cable core and is used to insulate and isolate the cable core from the outside environment. The fireproof layer is wrapped around the outer surface of the mineral insulation layer and is used to prevent the cable core from being ignited.

[0008] A protective layer, which wraps around the outer surface of the transition layer; and

[0009] Multiple protective capsules are detachably disposed on the outer surface of the protective layer, and the protective capsules are filled with materials that have rodent-proof and termite-proof effects; the protective capsules are at least partially exposed to the outside air.

[0010] The technical solutions described in this application embodiment have at least the following technical effects:

[0011] The rodent-proof, termite-proof, mineral-insulated flexible fire-resistant cable provided in this application embodiment features a transition layer consisting of a mineral insulation layer and a fire-resistant layer covering the cable core, followed by a protective layer. A removable protective capsule is positioned on the outer surface of the protective layer, filled with a material that repels rodents and termites, and at least partially exposed to the outside air. By providing multiple protective capsules protruding from the outer surface of the protective layer and in contact with the outside environment, the overall integrity of the cable's outer surface is reduced, making the cable easier to bend and reducing the contact area between the cable and the outside environment. This improves the cable's flexibility, protects the cable from physical damage, and significantly extends its service life. In case of damage, only the protective capsule needs to be replaced, which helps reduce maintenance costs and the time required for cable replacement compared to replacing the entire cable, ensuring continuous and reliable cable operation.

[0012] In some embodiments, the protective layer includes:

[0013] A protective layer skeleton is wrapped around the outer surface of the transition layer. The outer surface of the protective layer skeleton has multiple storage slots, and each protective capsule is detachably disposed in one of the storage slots.

[0014] In some embodiments, the protective capsule includes a capsule shell detachably disposed within the storage slot; the outer surface of the capsule shell on the side away from the storage slot is coated with a material that is rodent- and termite-resistant; the capsule shell is hollow to form a receiving space, which is filled with a material that is rodent- and termite-resistant and compressed gas; the compressed gas is used to make the air pressure inside the receiving space greater than the atmospheric pressure outside the capsule shell.

[0015] In some embodiments, the protective layer further includes a plurality of limiting portions, and at least one of the limiting portions is provided on the inner sidewall of each of the storage slots, the limiting portions being used to detachably engage the protective capsule within the storage slot.

[0016] In some embodiments, the compressed gas is a compressible flame-retardant gas; the melting point of the capsule shell is lower than the melting point of the protective layer skeleton.

[0017] In some embodiments, a plurality of the storage slots are arranged along the circumferential direction of the protective layer skeleton to form a storage slot group; a plurality of storage slot groups are arranged side by side along the axial direction of the protective layer skeleton; or any two adjacent storage slot groups are arranged alternately along the axial direction of the protective layer skeleton.

[0018] In some embodiments, the distance between two adjacent storage slots is greater than 2 mm and less than or equal to 2.5 mm; the distance between the capsule shell protruding from the protective layer skeleton is greater than 2 mm and less than or equal to 2.5 mm.

[0019] In some embodiments, the protective layer further includes a plurality of capsule integrity detection devices, which are spaced apart on the protective layer frame. The capsule integrity detection devices are used to detect the integrity of the protective capsules in a first region. The first regions of any two capsule integrity detection devices do not overlap, and the first regions of all capsule integrity detection devices can cover all the protective capsules on the protective layer frame.

[0020] In some embodiments, the protective layer further includes a plurality of damage indication devices, which are disposed one-to-one on the capsule integrity detection device. The capsule integrity detection device is electrically connected to the corresponding damage indication device, and the damage indication device is used to issue an indication signal when the capsule integrity detection device detects that the protective capsule is incomplete.

[0021] In some embodiments, the capsule integrity detection device is able to distinguish between incomplete protective capsules as damaged capsules and tampered capsules;

[0022] The protective layer also includes an automatic destruction device disposed within the storage slot; the automatic destruction device is electrically connected to the nearest capsule integrity detection device; the automatic destruction device is used to destroy the protective capsule within the storage slot upon receiving a signal from the capsule integrity detection device.

[0023] The damaged capsule is a protective capsule that has ruptured due to being bitten by rats or termites or due to high temperature. The man-made capsule is a protective capsule that has fallen off due to manual disassembly or improper installation. The capsule integrity detection device is used to send a signal to all the automatic destruction devices in the first area when the presence of the damaged capsule is detected. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the rodent-proof, termite-proof, mineral-insulated flexible fire-resistant cable provided in the embodiments of this application;

[0026] Figure 2 A schematic diagram of the structure of the rodent-proof, termite-proof, mineral-insulated flexible fire-resistant cable provided in this application embodiment when the protective capsule is not assembled;

[0027] Figure 3 A schematic diagram of the staggered arrangement of the storage troughs for the rodent-proof, termite-proof, mineral-insulated, flexible, fire-resistant cable provided in this application embodiment;

[0028] Figure 4 A cross-sectional view of the protective capsule provided in an embodiment of this application.

[0029] The following are the labeling elements in the figure:

[0030] 100. Rodent-proof, termite-proof, mineral-insulated flexible fireproof cable; 10. Cable core; 20. Transition layer; 21. Mineral insulation layer; 22. Fireproof layer; 30. Protective layer; 31. Protective layer skeleton; 311. Storage slot; 32. Limiting part; 33. Capsule integrity detection device; 34. Damage indication device; 35. Automatic destruction device; 40. Protective capsule; 41. Capsule shell; 411. Receptacle space. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 application 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 application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0036] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0037] It should be noted that in this application, the words "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of words such as "in some embodiments," "exemplarily," and "for example" is intended to present related concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0038] A cable is an electrical conductor used to transmit electrical energy or signals, and it typically consists of a metallic conductor, an insulation layer, and a protective sheath.

[0039] Cables in related technologies are typically laid in complex outdoor environments, where they must be protected from damage by rodents and termites, as well as from high temperatures and wildfires. Existing technologies usually improve the cable's resistance to damage and interference by increasing the hardness and thickness of the protective sheath. However, this reduces the cable's mobility, and when the cable is damaged by rodents or termites, the entire section often needs to be replaced, resulting in high maintenance costs and difficult maintenance operations.

[0040] Based on this, in order to improve the problem that cables in related technologies have poor mobility due to the use of a strong protective sleeve, and that require replacement of the entire section when damaged, which is difficult to operate, the embodiments of this application provide the following solution.

[0041] Please refer to the following: Figure 1 and Figure 2This application provides a rodent-proof and termite-proof mineral-insulated flexible fireproof cable 100. The rodent-proof and termite-proof mineral-insulated flexible fireproof cable 100 includes a cable core 10, a transition layer 20, a protective layer 30, and multiple protective capsules 40. The transition layer 20 includes a mineral insulation layer 21 and a fireproof layer 22. The mineral insulation layer 21 is wrapped around the outer surface of the cable core 10 and is used to insulate and isolate the cable core 10 from the outside environment. The fireproof layer 22 is wrapped around the outer surface of the mineral insulation layer 21 and is used to prevent the cable core 10 from being ignited. The protective layer 30 is wrapped around the outer surface of the transition layer 20. Multiple protective capsules 40 are detachably disposed on the outer surface of the protective layer 30. The protective capsules 40 are filled with materials that have rodent-proof and termite-proof effects. The protective capsules 40 are at least partially exposed to the outside air.

[0042] It is understood that the cable core 10 may include conductive wire cores and reinforcing filler strips. The mineral insulation layer 21 may be made of silica or mica, but is not limited to these. The fire-resistant layer 22 may be made of magnesium oxide or ceramicized polyolefin, but is not limited to these. The protective layer 30 is the outermost protective structure of the cable, protecting it from external mechanical damage. The protective capsule 40 is a component used to provide rodent and termite protection; the filling material inside may be dihydrocapsaicin or cypermethrin, but is not limited to these.

[0043] As can be seen from the above, the rodent-proof and termite-proof mineral-insulated flexible fireproof cable 100 provided in this application embodiment, by covering the cable core 10 with a transition layer 20 including a mineral insulation layer 21 and a fireproof layer 22, and then covering the transition layer 20 with a protective layer 30, and providing a removable protective capsule 40 on the outer surface of the protective layer 30, the protective capsule 40 is filled with a material with rodent-proof and termite-proof effects, and the protective capsule 40 is at least partially exposed to the outside air. By providing multiple protective capsules 40 protruding from the outer surface of the protective layer 30 and in contact with the outside, the overall integrity of the cable's outer surface can be reduced, thereby making the cable easier to bend, reducing the contact area between the cable and the outside, improving the cable's mobility, protecting the cable to reduce physical damage, significantly improving the cable's service life, and only needing to replace the protective capsule 40 when damaged, compared with replacing the entire cable, it helps to reduce maintenance costs, reduce the time required to replace the cable, and ensure that the cable can continue to operate reliably.

[0044] In some embodiments, please refer to the following: Figures 1 to 3 The protective layer 30 includes a protective layer skeleton 31, which is wrapped around the outer surface of the transition layer 20. The outer surface of the protective layer skeleton 31 is provided with a plurality of storage slots 311, and each protective capsule 40 is detachably disposed in a storage slot 311.

[0045] It is understood that the protective layer skeleton 31 is a structure covering the outer surface of the transition layer 20. The material of the protective layer skeleton 31 can be polyvinyl chloride or cross-linked polyethylene, but is not limited to these. The storage groove 311 is a structure for accommodating the protective capsule 40. The inner bottom surface of the storage groove 311 can be a flat surface or a curved surface, but is not limited to these.

[0046] With this configuration, the protective layer skeleton 31 is wrapped around the outer surface of the transition layer 20, and a storage slot 311 for accommodating the protective capsule 40 is opened on the protective layer skeleton 31. This allows the protective capsule 40 to be more stably placed on the protective layer 30, reducing the possibility of the protective capsule 40 falling off. It also makes the protective capsule 40 easier to install, reduces the number of maintenance times and costs, and improves the efficiency of cable maintenance.

[0047] Optionally, in some embodiments, please refer to Figures 1 to 4 The protective capsule 40 includes a capsule shell 41, which is detachably disposed within a storage slot 311. The outer surface of the capsule shell 41 on the side away from the storage slot 311 is coated with a material that is rodent-proof and termite-proof. The capsule shell 41 is hollow to form a receiving space 411, which is filled with a material that is rodent-proof and termite-proof and compressed gas. The compressed gas is used to make the air pressure inside the receiving space 411 greater than the atmospheric pressure outside the capsule shell 41.

[0048] It is understood that the capsule shell 41 is a container for holding materials with rodent- and termite-repellent properties, and can be made of the same material as the protective layer skeleton 31. The capsule shell 41 can be glued in place within the storage slot 311, or it can be secured by the friction between the outer surface of the capsule shell 41 and the storage slot 311, but is not limited to these methods. The rodent- and termite-repellent material coated on the outer surface of the side of the capsule shell 41 away from the storage slot 311 can be the same material as the internal filling. The compressed gas filled inside the capsule shell 41 is used to spray the rodent- and termite-repellent material outwards when the capsule shell 41 is damaged by rodents or termites, thereby dispersing the material and achieving a better rodent- and termite-repellent effect. The compressed gas can be compressed air or compressed inert gas, such as helium or nitrogen, but is not limited to these methods.

[0049] This configuration involves coating the surface of the capsule shell 41 with rodent- and termite-resistant materials, and filling the capsule shell 41 with rodent- and termite-resistant materials and compressed gas. The capsule shell 41 is detachably placed in the storage slot 311. When the protective capsule 40 is intact, the surface coating can repel rodents and termites. When damaged, the rodent- and termite-resistant materials inside can diffuse due to the pressure difference between the compressed gas and the outside, expanding the effective range. Furthermore, it can be disassembled and replaced after damage, preventing damage to the main body of the cable, significantly improving the cable's service life, reducing the time cost of cable maintenance, and amplifying the effective range of the rodent- and termite-resistant materials inside the protective capsule 40 through compressed gas, thereby enhancing the rodent- and termite-resistant effect, helping to save resources and reduce the material costs required for cable maintenance.

[0050] Optionally, the width of the protective capsule 40 on the side away from the cable core 10 is smaller than the width of the opening of the storage slot 311.

[0051] It is understood that the protective capsule 40 can be hemispherical at both ends and cylindrical in the middle, and is set on the protective layer skeleton 31 in a direction parallel to or perpendicular to the axis of the protective layer skeleton 31, and contacts the outside through the arc surface of the cylindrical middle section of the protective capsule 40; or it can be shaped like a frustum, with the large-radius bottom surface set in the storage groove 311, and contacts the outside through the small-radius bottom surface, but it is not limited to this.

[0052] With this configuration, the outer surface of the protective capsule 40 contacts the outside before the outer surface of the protective layer skeleton 31. This ensures that the replaceable protective capsule 40 is worn out before the non-replaceable protective layer skeleton 31, effectively preventing wear on the protective layer skeleton 31 of the cable body and thus affecting the internal transition layer 20 and cable layer. This extends the cable's service life, reduces the difficulty of cable maintenance and the requirements for maintenance personnel, and saves on cable maintenance costs. Furthermore, the contact area between the protective capsule 40 and the outside is smaller than the contact area between the outer surface of the protective layer skeleton 31 and the outside, reducing the friction between the cable and the outside, making the cable easier to move during laying, increasing the cable's mobility, reducing the construction difficulty of cable laying, and improving the work efficiency of cable laying.

[0053] Optionally, please refer to Figures 1 to 2 The protective layer 30 also includes a plurality of limiting parts 32. At least one limiting part 32 is provided on the inner side wall of each storage slot 311. The limiting part 32 is used to detachably lock the protective capsule 40 into the storage slot 311.

[0054] It is understood that the limiting part 32 can prevent the protective capsule 40 from easily falling out of the storage slot 311. For example, the limiting part 32 can be two rubber protrusions that are disposed opposite to each other on the two inner walls of the storage slot 311 along the width direction of the storage slot 311. When the protective capsule 40 enters the storage slot 311, the two rubber protrusions are compressed and deformed to clamp the protective capsule 40 between them. The limiting part 32 can also be a spring disposed on one inner wall of the storage slot 311 along the length direction of the storage slot 311. When the protective capsule 40 enters the storage slot 311, the spring is compressed so that the spring and the inner wall of the other side of the storage slot 311 together clamp the protective capsule 40, but it is not limited to this.

[0055] With this configuration, by setting a limiting part 32 in the storage slot 311, the protective capsule 40 is not easy to fall out of the storage slot 311. This can prevent the protective capsule 40 from falling off during the cable laying or operation, improve the quality of the cable, maintain the normal rodent and termite prevention function of the cable, and also reduce the frequency of cable maintenance and reduce the cost required for cable maintenance.

[0056] In some embodiments, please refer to Figure 1 and Figure 4 The compressed gas is a compressed flame-retardant gas; the melting point of the capsule shell 41 is lower than the melting point of the protective layer skeleton 31.

[0057] It is understood that compressed flame-retardant gas can be compressed helium or compressed carbon dioxide, but is not limited to these. To make the melting point of the capsule shell 41 lower than that of the protective layer skeleton 31, the capsule shell 41 can be made of a material with a lower melting point than the protective layer skeleton 31. For example, when the protective layer skeleton 31 is made of polyvinyl chloride with a melting point of 212°C, the capsule shell 41 can be made of cross-linked polyethylene with a melting point of 125°C; or a combustion accelerant can be added to the material of the capsule shell 41 to make the capsule shell 41 more flammable than the protective layer skeleton 31. For example, potassium chlorate can be added to the material of the capsule shell 41 to make the capsule shell 41 reach its melting point temperature before the protective layer skeleton 31, but is not limited to these.

[0058] This configuration, by making the melting point of the capsule shell 41 lower than that of the protective layer skeleton 31, and filling the capsule shell 41 with compressed flame-retardant gas, ensures that when a fire breaks out around the cable, the protective capsule 40 melts before the protective layer skeleton 31, releasing the compressed flame-retardant gas inside. The diffusion of the compressed flame-retardant gas can carry away some heat and delay or extinguish the surrounding fire, effectively extending the normal working time of the cable, reducing the possibility of cable damage, and reducing the cost of cable maintenance.

[0059] Optionally, in some embodiments, please refer to Figures 1 to 3Multiple storage slots 311 are arranged along the circumferential direction of the protective layer frame 31 to form a storage slot group; multiple storage slot groups are arranged side by side along the axial direction of the protective layer frame 31; or any two adjacent storage slot groups are arranged alternately along the axial direction of the protective layer frame 31.

[0060] This configuration, by arranging multiple storage slots side-by-side along the axial direction of the protective layer skeleton 31, ensures that the multiple storage slots 311 along the axial direction of the protective layer skeleton 31 are on the same straight line parallel to the axis of the protective layer skeleton 31. When it is necessary to move the cable along its own axial direction, it can reduce the frictional force along the cable axis, enhance the cable's mobility, and improve the efficiency of cable laying. By arranging any two adjacent storage slots in an alternating manner along the axial direction of the protective layer skeleton 31, any two adjacent storage slots 311 along the axial direction of the protective layer skeleton 31 are not on the same straight line parallel to the axis of the protective layer skeleton 31. Thus, when bending the cable, any one of the protective capsules 40 can move between two adjacent protective capsules 40 under the influence of the cable bending, thereby enhancing the cable's mobility during bending, improving the cable's adaptability to the laying space, saving laying space, and improving laying efficiency.

[0061] Optionally, please refer to Figures 1 to 3 The distance between two adjacent storage slots 311 is greater than 2mm and less than or equal to 2.5mm; the distance between the capsule shell 41 protruding from the protective layer skeleton 31 is greater than 2mm and less than or equal to 2.5mm.

[0062] It is understandable that the width of a rat's teeth is about 2mm. When a rat gnaws at a cable, it is difficult for the rat's teeth to form a 90° angle with the cable to penetrate the cable vertically. The gap between any two adjacent protective capsules 40 can be controlled within 2.5mm, so that the rat cannot directly bite through the protective layer skeleton 31.

[0063] This configuration ensures that the distance between two adjacent storage slots 311 is greater than 2mm and less than or equal to 2.5mm, and the distance between the capsule shell 41 protruding from the protective layer skeleton 31 is greater than 2mm and less than 2.5mm. This also ensures that the interval between any two adjacent protective capsules 40 is less than or equal to 2.5mm. Consequently, rats cannot directly gnaw on the protective layer skeleton 31, but can only reach the protective capsules 40. When the protective capsules 40 are damaged, the rat-proof material filled inside the protective capsules 40 can drive away rats. At the same time, the gaps between multiple protective capsules 40 facilitate cable bending, improve cable mobility, enhance cable adaptability to the laying space, save laying space, and improve laying efficiency.

[0064] In some embodiments, please refer to Figures 1 to 4The protective layer 30 also includes multiple capsule integrity detection devices 33, which are spaced apart on the protective layer skeleton 31. The capsule integrity detection devices 33 are used to detect the integrity of the protective capsules 40 in the first area. The first areas of any two capsule integrity detection devices 33 do not overlap, and the first areas of all capsule integrity detection devices 33 can cover all the protective capsules 40 on the protective layer skeleton 31.

[0065] It is understood that the capsule integrity detection device 33 is a component used to detect the integrity of all protective capsules 40 within a first region. For example, it may include an ultrasonic sensor and a data processing chip. The data processing chip analyzes the distance from the ultrasonic sensor to each unit on all protective capsules 40 within the first region to determine if any protective capsule 40 is damaged. It may also include an infrared sensor and a data processing chip, analyzing the distance from the infrared sensor to each unit on all protective capsules 40 within the first region to determine if any protective capsule 40 is damaged, but is not limited to these. The first region is the detection range of the capsule integrity detection device 33. For example, the first region may be an area covering all protective capsules 40 adjacent to the capsule integrity detection device 33, or it may be a circular area with the capsule integrity detection device 33 as the axis and the sum of the lengths of the three protective capsules 40 as the radius, but is not limited to these. Wires can be embedded in the protective layer skeleton 31 to power the capsule integrity detection device 33 and enable data interaction.

[0066] With this setup, by using the capsule integrity detection device 33 to detect the integrity of the protective capsule 40 on the cable, it is possible to promptly detect any damage to the protective capsule 40 on the cable, and then conduct timely inspections and arrange maintenance work to avoid damage to the protective layer skeleton 31 or deeper layers, reduce the cable failure rate, improve the cable reliability, and thus ensure the electrical safety of the cable, effectively extending the normal working time of the cable and reducing maintenance costs.

[0067] In some embodiments, please refer to Figure 1 and Figure 2 The protective layer 30 also includes multiple damage warning devices 34, which are respectively disposed on the capsule integrity detection device 33. The capsule integrity detection device 33 corresponding to the damage warning device 34 is electrically connected. The damage warning device 34 is used to issue a warning signal when the capsule integrity detection device 33 detects that the protective capsule 40 is not intact.

[0068] It is understood that the damage indication device 34 is a component used to make the damaged protective capsule 40 easily detectable. When the capsule integrity detection device 33 detects that the protective capsule 40 is incomplete, it sends a signal to the damage indication device 34, which then issues an indication message. For example, the damage indication device 34 could be a flash LED, in which case the indication message would be a flash; or the damage indication device 34 could be a signal generator, in which case the indication message would be a signal from the signal generator containing corresponding location information, allowing maintenance personnel to locate the damaged position based on the location information. However, it is not limited to these methods. Power and data exchange for the damage indication device 34 can be achieved by embedding wires in the protective layer skeleton 31.

[0069] With this configuration, the damage warning device 34, which is electrically connected to the capsule integrity detection device 33, can issue a warning signal when the capsule integrity detection device 33 detects that the protective capsule 40 is incomplete. This makes it easier to spot the damaged protective capsule 40, reduces the difficulty of cable maintenance, improves the response speed of cable repair, prevents the damage from expanding further and causing more serious consequences, and improves the efficiency of maintenance work.

[0070] In some embodiments, please refer to Figure 1 and Figure 2 The capsule integrity detection device 33 can distinguish between incomplete protective capsules 40 as damaged capsules and man-made capsules; the protective layer 30 also includes an automatic destruction device 35, which is disposed in the storage slot 311; the automatic destruction device 35 is electrically connected to the nearest capsule integrity detection device 33; the automatic destruction device 35 is used to destroy the protective capsules 40 in the storage slot 311 after receiving a signal from the capsule integrity detection device 33; wherein, the damaged capsule is a protective capsule 40 that has been broken due to being bitten by rats, termites or high temperature, and the man-made capsule is a protective capsule 40 that has been disassembled manually or improperly installed; the capsule integrity detection device 33 is used to send a signal to all automatic destruction devices 35 in the first area when a damaged capsule is detected in the first area.

[0071] It is understandable that damaged capsules are protective capsules 40 that have been damaged by external objects or forces, such as being bitten by rodents or ants or melted by high temperatures, while man-made capsules are protective capsules 40 that have fallen off or been damaged due to maintenance needs or improper installation. The automatic destruction device 35 may include a heating wire disposed in the storage slot 311. When the capsule integrity detection device 33 sends a signal to all automatic destruction devices 35 in the first area, the heating wire begins to heat up until the outer shell of the protective capsule 40 is destroyed. Alternatively, the automatic destruction device 35 may include a signal receiving device, a fuse, a spring, and a spike. One end of the spring is disposed in one side of the storage slot 311, one end of the fuse is connected to one side of the storage slot 311, the other end of the spring is connected to the other end of the fuse, and the spring is compressed. The spike is disposed in the other end of the spring, with the tip of the spike facing the other side of the storage slot 311. The signal receiving device is electrically connected to the fuse and the capsule integrity detection device 33 respectively. When the signal receiving device receives a signal from the capsule integrity detection device 33, it breaks the circuit to melt the fuse, and then the spring extends, causing the tip of the spike to pierce the capsule. However, this is not the only possible method.

[0072] With this configuration, when a protective capsule 40 in a first area is damaged by an external object or force, the capsule integrity detection device 33 sends a signal to all automatic destruction devices 35 in the first area, causing all protective capsules 40 in the same first area to automatically destroy, releasing the rodent-proof and termite-proof material and compressed gas inside. This creates a rodent-proof and termite-proof area over a larger area, improving the rodent-proof and termite-proof effect, preventing further damage to the cable, reducing maintenance and replacement costs, reducing the time required to replace the cable, and ensuring the cable can operate continuously and reliably.

[0073] Alternatively, in some other embodiments, please refer to Figures 1 to 4The protective capsule 40 also includes a capsule integrity detection device 33, a breakage warning device 34, an automatic destruction device 35, and a data processing component. The capsule integrity detection device 33 is disposed inside the capsule shell 41 and is used to detect the integrity of the protective capsule 40. The breakage warning device 34 is disposed inside the protective capsule 40 and is electrically connected to the capsule integrity detection device 33 within the same protective capsule 40. The breakage warning device 34 is used to issue a position signal and a warning signal of the broken capsule when the capsule integrity detection device 33 detects that the protective capsule 40 is broken. A data processing unit is disposed within the receiving space 411 of the protective capsule 40; the data processing units of the protective capsule 40 in two adjacent storage slots 311 are capable of wireless data interaction; an automatic destruction device 35 is disposed within the receiving space 411 of the protective capsule 40; the automatic destruction device 35 is electrically connected to the data processing unit within the same protective capsule 40; the automatic destruction device 35 is used to destroy the capsule shell 41 of the protective capsule 40 after receiving a signal from the data processing unit; wherein, the wire is embedded in the outer surface of the protective layer skeleton 31; a data processing unit of one protective capsule 40 is electrically connected to at least three adjacent data processing units of the protective capsule 40, and when a disconnection is detected between adjacent data processing units of the protective capsule 40, a destruction signal is sent to the two data processing units closest to the disconnected data processing units, and a signal is sent to the automatic destruction device 35 within the same protective capsule 40.

[0074] It is understood that each protective capsule 40 is equipped with a capsule integrity detection device 33, a breakage warning device 34, an automatic destruction device 35, and a data processing unit. The capsule integrity detection device 33 can be an acoustic sensor or an infrared sensor, but is not limited to these. The breakage warning device 34 can be a buzzer or a flash LED, but is not limited to these. The automatic destruction device 35 can be a compressed air bladder electrically connected to the data processing unit, which releases compressed gas to rupture the protective capsule 40 upon receiving an automatic destruction signal; or it can be a heating wire that heats to melt the outer shell of the protective capsule 40 upon receiving an automatic destruction signal, but is not limited to these. The data processing unit can be an MCU, a data processing chip, etc., but is not limited to these.

[0075] With this configuration, by incorporating a capsule integrity detection device 33, a damage indication device 34, an automatic destruction device 35, and a data processing component within each protective capsule 40, the status of each protective capsule 40 can be detected. When a protective capsule 40 is damaged, the location of the damage can be precisely located, and the protective capsules 40 surrounding the damaged capsule 40 can be automatically destroyed to form a rodent- and termite-proof zone. This enhances the repulsion effect against rodents and termites, making the rodent- and termite-proof measures more targeted. This is suitable for cables with higher requirements, enabling more detailed protection and monitoring of cables, avoiding further property damage, and reducing maintenance and replacement costs.

[0076] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rodent and termite resistant mineral insulated flexible fire resistant cable, characterized in that, include: Cable core; The transition layer includes a mineral insulation layer and a fireproof layer. The mineral insulation layer is wrapped around the outer surface of the cable core and is used to insulate and isolate the cable core from the outside environment. The fireproof layer is wrapped around the outer surface of the mineral insulation layer and is used to prevent the cable core from being ignited. A protective layer is provided, which wraps around the outer surface of the transition layer. as well as Multiple protective capsules are detachably disposed on the outer surface of the protective layer, and the protective capsules are filled with materials that have rodent-proof and termite-proof effects; The protective capsule is at least partially exposed to the outside air; The protective layer includes: A protective layer skeleton is wrapped around the outer surface of the transition layer. The outer surface of the protective layer skeleton has multiple storage slots, and each protective capsule is detachably disposed in one of the storage slots. The protective layer also includes multiple capsule integrity detection devices, which are spaced apart on the protective layer frame. Each capsule integrity detection device is used to detect the integrity of the protective capsules within a first region. The first regions of any two capsule integrity detection devices do not overlap, and the first regions of all capsule integrity detection devices can cover all the protective capsules on the protective layer frame. The capsule integrity detection device can distinguish between incomplete protective capsules as damaged capsules and tampered capsules. The protective layer also includes an automatic destruction device disposed within the storage slot; the automatic destruction device is electrically connected to the nearest capsule integrity detection device; the automatic destruction device is used to destroy the protective capsule within the storage slot upon receiving a signal from the capsule integrity detection device. The damaged capsule is a protective capsule that has ruptured due to being bitten by rats or termites or due to high temperature. The man-made capsule is a protective capsule that has fallen off due to manual disassembly or improper installation. The capsule integrity detection device is used to send a signal to all the automatic destruction devices in the first area when the presence of the damaged capsule is detected.

2. The rodent-proof, termite-proof, mineral-insulated, flexible fire-resistant cable as described in claim 1, characterized in that, The protective capsule includes a capsule shell, which is detachably disposed within the storage slot; the outer surface of the capsule shell on the side away from the storage slot is coated with a material that is rodent-proof and termite-proof; the capsule shell is hollow inside to form a receiving space, which is filled with a material that is rodent-proof and termite-proof and compressed gas; the compressed gas is used to make the air pressure inside the receiving space greater than the atmospheric pressure outside the capsule shell.

3. The rodent-proof, termite-proof, mineral-insulated flexible fire-resistant cable as described in claim 2, characterized in that, The protective layer also includes multiple limiting parts, and at least one limiting part is provided on the inner side wall of each storage slot. The limiting part is used to detachably lock the protective capsule into the storage slot.

4. The rodent-proof, termite-proof, mineral-insulated, flexible fire-resistant cable as described in claim 2, characterized in that, The compressed gas is a compressible flame-retardant gas; the melting point of the capsule shell is lower than the melting point of the protective layer skeleton.

5. The rodent-proof, termite-proof, mineral-insulated, flexible fire-resistant cable as described in claim 2, characterized in that, Multiple storage slots are arranged along the circumferential direction of the protective layer skeleton to form a storage slot group; multiple storage slot groups are arranged side by side along the axial direction of the protective layer skeleton; or any two adjacent storage slot groups are arranged alternately along the axial direction of the protective layer skeleton.

6. The rodent-proof, termite-proof, mineral-insulated, flexible fire-resistant cable as described in claim 5, characterized in that, The distance between two adjacent storage slots is greater than 2mm and less than or equal to 2.5mm; the distance between the capsule shell protruding from the protective layer skeleton is greater than 2mm and less than or equal to 2.5mm.

7. The rodent-proof, termite-proof, mineral-insulated flexible fire-resistant cable as described in claim 1, characterized in that, The protective layer also includes multiple damage warning devices, which are respectively disposed on the capsule integrity detection device. The capsule integrity detection device is electrically connected to the corresponding damage warning device. The damage warning device is used to issue a warning signal when the capsule integrity detection device detects that the protective capsule is incomplete.

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