Environment-friendly rat-proof and ant-proof intelligent AI early warning cable and production method thereof

Abstract

The invention discloses an environment-friendly rat-proof and ant-proof intelligent AI early warning cable and a production method thereof, and the cable comprises a central reinforcing core, three control wire cores and three main wire cores are distributed at the outer circumference of the central reinforcing core, and six edge reinforcing cores are filled in gaps at the outer sides of the three control wire cores and the three main wire cores in a saddle shape. A non-woven fabric wrapping layer is arranged outside the control wire cores and the main wire cores, an extruded isolation sleeve is arranged outside the wrapping layer, a steel tape armoring layer is arranged outside the extruded isolation sleeve, an extruded outer sheath is arranged outside the steel tape armoring layer, and a protective layer is arranged outside the extruded outer sheath. The cable has the beneficial effects that the structural stability, bending resistance and tensile resistance of the cable can be improved through design, and monitoring and early warning can be performed on the cable through the optical fiber, so that the service life of the cable is prolonged.

Description

Technical Field

[0001] This invention relates to the field of cable technology, specifically to an environmentally friendly, rodent- and ant-proof intelligent AI early warning cable and its production method. Background Technology

[0002] Currently, intelligent cable technology primarily focuses on ensuring the safe and stable operation of power lines, providing visual monitoring, and enabling rapid fault location. The lifespan of optical fibers, besides being determined by manufacturing materials, is also closely related to their protective layer. It is mainly used in national defense, rail transportation, wind, solar, and energy storage cable transmission, and intelligent factory construction projects.

[0003] In existing technologies, the main component of optical fiber is silicon dioxide, which has relatively stable chemical properties but is physically susceptible to bending and lacks tensile strength. Therefore, several protective layers need to be installed on the outside of the optical fiber to enhance its structural stability, bending resistance, and tensile strength, thereby increasing its service life. Meanwhile, cable monitoring typically involves visual monitoring equipment installed within cable tunnels and intelligent monitoring achieved by attaching temperature-sensing optical fibers to the cable surface. However, this approach is costly, and installing monitoring facilities along the entire line requires significant space for movement. In buried or narrow lines, intelligent cable monitoring and early warning systems are impractical, necessitating the use of optical fibers for cable monitoring and early warning. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this application proposes an environmentally friendly rodent- and ant-proof intelligent AI early warning cable and its production method. The cable's structural stability, bending resistance, and tensile strength can be improved through design, and the cable can be monitored and warned through optical fibers, thereby extending the cable's service life.

[0005] The following is the technical solution of the present invention: an environmentally friendly anti-rodent and anti-ant intelligent AI early warning cable, comprising: a central reinforcing core, three control wire cores and three main wire cores distributed around the outer circumference of the central reinforcing core, six edge reinforcing cores saddle-shaped filling in the gaps outside the three control wire cores and three main wire cores, a non-woven fabric wrapping layer provided outside the control wire cores and main wire cores, an extruded isolation sleeve provided outside the wrapping layer, a steel tape armor layer provided outside the extruded isolation sleeve, an extruded outer sheath provided outside the steel tape armor layer, and a protective layer provided outside the extruded outer sheath.

[0006] As a preferred embodiment of the present invention, the control core includes an optical fiber, a steel wire rope, and a flexible tube that are distributed in three equal parts around the circumference, and a control polyester tape layer disposed outside the optical fiber, the steel wire rope, and the flexible tube.

[0007] As a preferred embodiment of the present invention, the polyester tape layer is controlled to be a thin polyester tape with a thickness of 0.025 mm, and the optical fiber is extruded with ETFE material, with an average thickness ranging from 0.3 mm to 0.4 mm and a minimum thickness ranging from 0.25 mm to 0.35 mm.

[0008] As a preferred embodiment of the present invention, the optical fiber is a single-mode or multi-mode optical fiber, the steel wire of the steel rope is an ultra-high strength steel wire with a tensile strength of 3000MPa to 4000MPa, and the flexible tube includes an outer tube and an inner tube. The outer tube is a rigid tube, and the inner tube is a flexible tube. The outer surface of the inner tube has a serrated structure, and the inner surface has a smooth circular structure. The inner tube is fitted inside the outer tube, and the twisting pitch of the optical fiber, steel rope and flexible tube does not exceed 10 times the outer diameter of the control core.

[0009] As a preferred embodiment of the present invention, the main core includes an insulated core conductor and a first shielding layer, an insulation layer, a second shielding layer, and a copper strip shielding layer wrapped around the insulated core conductor. The insulated core conductor adopts a regular arrangement structure of one single wire in the inner layer, six single wires in the middle layer, and twelve single wires in the outer layer, with the middle layer and the outer layer twisted in opposite directions. The twisting pitch of the middle layer does not exceed 20 times the outer diameter of the insulated core conductor, and the twisting pitch of the outer layer does not exceed 12 times the outer diameter of the insulated core conductor.

[0010] As a preferred embodiment of the present invention, the central reinforcing core is made of 7 ultra-high strength steel wires twisted together to form a steel wire rope, and the outer side of the steel wire rope is extruded with fluoroplastic with a nominal thickness of 0.5mm. The fluoroplastic material is ETFE, and the thinnest point of the fluoroplastic protective layer is 0.35mm.

[0011] As a preferred embodiment of the present invention, the nonwoven fabric wrapping layer uses a lightweight plain weave nonwoven fabric with a thickness of 0.11 mm and a width of 60 mm, with an overlap rate of 10% to 15%.

[0012] As a preferred embodiment of the present invention, the galvanized steel strip of the steel strip armor layer has a tensile strength of 350 MPa and a steel strip wrapping gap ratio of 45% to 50%.

[0013] As a preferred embodiment of the present invention, the extruded isolation sleeve and the extruded outer sheath are made of polyvinyl chloride material with a temperature resistance rating of 90 degrees Celsius, and the protective layer is nylon with a nominal extruded thickness of 0.5 mm.

[0014] A method for producing an environmentally friendly, rodent- and ant-proof intelligent AI early warning cable includes the following steps: S1. Separately fabricate optical fibers, steel wire ropes, and flexible hoses, and then combine the optical fibers, steel wire ropes, and flexible hoses into a cable. Finally, fabricate a control polyester tape layer on the outside to form the control core. S2. Seven high-strength steel wires are twisted together and then extruded with ETFE insulation to make a central reinforcing core and an edge reinforcing core. S3. Make the main core by arranging the control core and the main core around the circumference of the central reinforcing core to form a cable, and setting edge reinforcing cores in the gaps on the outside of the control core and the main core to form the cable core. S4. The cable core is wrapped with a non-woven fabric wrapping layer, an extruded isolation sleeve, a steel tape armor layer, an extruded outer sheath, and a protective layer in sequence.

[0015] The beneficial effects of this invention are as follows: Three control cores and three main cores are circumferentially distributed outside the central reinforcing core. Six saddle-shaped edge reinforcing cores are arranged in the gaps outside the control cores and main cores, resulting in a compact structure that further enhances tightness and increases the stability of the cable structure during frequent use. Furthermore, the cable core is wrapped with a non-woven fabric sheath, an extruded isolation sleeve, a steel tape armor layer, an extruded outer sheath, and a protective layer, thereby increasing the overall cable's bending and tensile strength and extending its service life. The central reinforcing core uses seven high-strength steel wires twisted together and then extruded with ETFE insulation, with a nominal insulation thickness of 0.3 mm. With a suitable stranding pitch, the tensile and torsional resistance is better. The optical fiber after extrusion insulation of the control core can be used for temperature early warning, real-time monitoring and fault alarm according to actual needs. Its temperature early warning accuracy is ±1℃, the vibration early warning detection distance is 50km and the positioning accuracy is 2m. The intermediate joint temperature measurement early warning is realized through infrared temperature measurement sensor and has visualization, realizing all-round monitoring of urban roads, building safety, etc. The produced cable has excellent impact resistance and bending performance. Through insulation layers with different extrusion temperatures, the impact resistance and bending performance are further enhanced, which is easy to promote and reduces the cost of use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the environmentally friendly rodent-proof intelligent AI early warning cable of the present invention; Figure 2 This is a flowchart illustrating the production method of the environmentally friendly rodent-proof intelligent AI early warning cable of the present invention. In the diagram: 1. Central reinforcing core; 2. Control core; 3. Main core; 4. Edge reinforcing core; 5. Non-woven fabric wrapping layer; 6. Extruded isolation sleeve; 7. Steel tape armor layer; 8. Extruded outer sheath; 9. Protective layer; 21. Optical fiber; 22. Steel wire rope; 23. Flexible hose; 24. Control polyester tape layer; 31. Insulated core conductor; 32. First shielding layer; 33. Insulation layer; 34. Second shielding layer; 35. Copper tape shielding layer. Detailed Implementation

[0017] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: like Figure 1 As shown, an environmentally friendly, rodent- and ant-proof intelligent AI early warning cable includes: The central reinforcing core has three control wire cores and three main wire cores distributed around its outer circumference. Six edge reinforcing cores are saddle-shaped fillings in the gaps outside the three control wire cores and three main wire cores. The control wire cores and main wire cores are wrapped with a non-woven fabric layer. The wrapping layer is surrounded by an extruded isolation sleeve. The extruded isolation sleeve is surrounded by a steel strip armor layer. The steel strip armor layer is surrounded by an extruded outer sheath. The extruded outer sheath is surrounded by a protective layer.

[0019] The central reinforcing core is located at the center of the cable, and the three control cores and three main cores are distributed circumferentially outside the central reinforcing core to form the cable core; the six edge reinforcing cores are respectively set in the gaps on the outside of the adjacent cores of the cable core, and the non-woven fabric wrapping layer, extruded isolation sleeve, steel tape armor, extruded outer sheath and protective layer are sequentially set outside the cable core.

[0020] The cable employs a compact structure with three control cores and three main cores arranged circumferentially around the central reinforcing core. Six edge reinforcing cores, arranged in a saddle shape, are placed in the gaps outside the control and main cores. This arrangement enhances the cable's tightness and stability during frequent use. Furthermore, the cable's impact resistance, scratch resistance, rodent and termite resistance, and environmental friendliness are increased through non-woven fabric wrapping, extruded isolation sleeves, steel tape armor layers, extruded outer sheaths, and protective layers. This improves the cable's lifespan and ensures it fulfills its functions of load monitoring and alarm, fault alarm location, and fire prevention, enabling comprehensive monitoring of urban roads and buildings.

[0021] The control core comprises an optical fiber, steel wire rope, and flexible tubing, all encased in extruded insulation within the control core cable, and a control polyester tape layer sequentially wrapped around the control insulation core. The optical fiber, steel wire rope, and flexible tubing are arranged in three equal circumferential sections, with the control polyester tape layer positioned outside them. This three-part circumferential distribution of the control insulation core outside the central reinforcing core, combined with the three-part main core, further enhances the cable's tightness, increases operational stability, and extends its service life.

[0022] The extruded insulation of the control core optical fiber can be used for temperature sensing and early warning, real-time monitoring, and fault alarm according to actual needs. Its temperature sensing and early warning accuracy is ±1℃, the vibration early warning detection distance is 50km, and the positioning accuracy is 2m. Temperature measurement and early warning at intermediate joints are achieved through infrared temperature sensing and are visualized, enabling comprehensive monitoring of urban roads, building safety, and other aspects. Fiber optic sensing technology uses optical fibers as sensors to detect vibration and acoustic signals along the fiber optic line to achieve early warning. When the optical fiber is subjected to external interference (such as vibration, acoustic waves, etc.), the characteristics of light propagation in the fiber change. These changes can be captured by specialized equipment and converted into electrical signals for analysis and processing. When the system detects abnormal signals, it can display the operation and alarm status along the pipeline in real time through a GIS map, and simultaneously output alarm information via sound, light, SMS, and email.

[0023] The steel wire rope in the control core is formed by twisting 7 high-strength steel wires together, with the twisting pitch not exceeding 10 times the outer diameter. The steel wire rope adopts a regular 1+6 twisting structure with a suitable twisting pitch, resulting in better tensile and torsional resistance.

[0024] The control cable core consists of an outer tube and an inner tube. The outer tube is a rigid tube, while the inner tube is a flexible tube. The outer surface of the inner tube has a serrated structure, while the inner surface has a smooth, circular structure. The inner tube is fitted inside the outer tube. The serrated outer surface of the inner tube allows for elastic expansion and contraction; the serrations act as a buffer, while the outer tube acts as a limiter, preventing excessive expansion of the inner tube. Simultaneously, a cable sheath composed of the flexible tube, optical fiber, and steel wire rope is filled with a high-temperature filler rope. This high-temperature filler rope has relatively low thermal conductivity, reducing pressure changes inside the flexible tube caused by variations in external temperature.

[0025] The control polyester tape layer in the control wire core is made of 0.025 thin polyester tape with overlapping wrapping and a wrapping overlap rate of 15%. After wrapping, the outer diameter of the control wire core is smaller and the arrangement is more compact, which gives the control wire core better tensile and torsional resistance.

[0026] The main conductor consists of an insulated core conductor and a first shielding layer, an insulation layer, a second shielding layer, and a copper tape shielding layer wrapped around it. The insulated core conductor is stranded in a regular arrangement with one single wire in the inner layer, six single wires in the middle layer, and twelve single wires in the outer layer. The middle and outer layers are stranded in opposite directions. The stranding pitch of the middle layer does not exceed 20 times the outer diameter of the insulated core conductor, and the stranding pitch of the outer layer does not exceed 12 times the outer diameter of the insulated core conductor. This regular stranding arrangement, with opposite stranding methods for the middle and outer layers, results in a tighter structure, making it less prone to loosening and providing better tensile and torsional resistance.

[0027] The nominal thickness of the insulation layer of the main conductor is 4.5mm, with an average thickness not less than the nominal thickness and a minimum thickness of not less than 3.95mm. The insulation eccentricity is less than or equal to 5%. The first shielding layer, insulation layer, and second shielding layer are extruded in a single pass using imported HCCV three-layer co-extrusion equipment. Insulation eccentricity is controlled using three methods: dual-rotation traction control technology, roundness stabilization control technology, and online thickness and eccentricity measurement technology, ensuring that the eccentricity is kept within 5%.

[0028] After the insulation layer is shielded by a second shielding layer, a copper tape shielding layer is overlapped and wrapped around it. The copper tape shielding layer is TU1 copper tape with a nominal thickness of 0.1mm. The average overlap rate of the copper tape is 15%, and the minimum overlap rate is not less than 5%. The copper tape shielding layer is mainly used for electrostatic shielding, limiting the effect of the electric field within the cable insulation. It also serves as the neutral line in a three-phase four-wire system, conducting unbalanced current. Furthermore, the power station protection system requires the external metal shield to have good lightning protection characteristics. Under normal circumstances, it carries capacitive current; in the event of a short circuit, it acts as a loop for fault current, preventing axial surface discharge.

[0029] The nonwoven fabric wrapping layer uses a lightweight plain weave nonwoven fabric with a thickness of 0.11mm and a width of 60mm, with an overlap rate of 10% to 15%. The appropriate overlap rate results in better tightness.

[0030] The extruded insulation sleeve is made of polyvinyl chloride (PVC), using a die core with an outer diameter 5.0 mm larger than the theoretically calculated outer diameter and a die sleeve with an outer diameter 15 mm larger than the theoretically calculated outer diameter. It is produced using a compression extrusion process on an extruder. This improves the cable's impact strength, tear resistance, and tightness, while reducing wear on the entire conductor after armoring.

[0031] The steel tape armor layer is made of galvanized steel tape with a nominal thickness of 0.5mm, and the tensile strength of the steel tape reaches 350MPa. The steel tape wrapping gap ratio is between 45% and 50%. This improves the cable's impact strength and tensile strength.

[0032] The outer sheath of the extrusion package is made of polyvinyl chloride. A die core with an outer diameter 5.0 mm larger than the theoretically calculated outer diameter and a die sleeve with an outer diameter 15 mm larger than the theoretically calculated outer diameter are selected. The extrusion is carried out on an extruder using a tube extrusion method.

[0033] The protective layer is made of nylon, with a nominal thickness of 0.5mm. The outer sheath and nylon are co-extruded in a double-layer process, with a grafting agent added at a ratio of 20%. Production is carried out using a tube-type extrusion method on the double-layer co-extrusion die. This improves the overall impact resistance, tear resistance, and tightness of the cable. It reduces surface wear during use, expanding the cable's application range. The double-layer co-extrusion process allows for abrasion testing; under an applied force of 550N, after 250 abrasion cycles, no cracks appear on the inner or outer surfaces of the sheath. The extruded nylon sheath also exhibits termite and rat-bite resistance, passing the JB / T 10696.9-2011 termite and rat-bite resistance tests. Furthermore, the double-layer co-extruded sheath can withstand the impact of a 60kg hammer from a height of 1 meter without significant cracks appearing on the inner or outer surfaces. This double-layer co-extruded sheath effectively ensures the normal operation of the cable under complex environmental conditions. Meanwhile, the cable uses an environmentally friendly nylon sheath, and most of the cable is made of recyclable materials. After the cable reaches its maximum service life, it can be recycled and reprocessed into other products.

[0034] Example 2: like Figure 2 As shown, a method for producing an environmentally friendly, rodent- and ant-proof intelligent AI early warning cable includes the following steps: S1. Separately fabricate optical fibers, steel wire ropes, and flexible hoses, and then combine the optical fibers, steel wire ropes, and flexible hoses into a cable. Finally, fabricate a control polyester tape layer on the outside to form the control core. S2. Seven high-strength steel wires are twisted together and then extruded with ETFE insulation to make a central reinforcing core and an edge reinforcing core. S3. Make the main core by arranging the control core and the main core around the circumference of the central reinforcing core to form a cable, and setting edge reinforcing cores in the gaps on the outside of the control core and the main core to form the cable core. S4. The cable core is wrapped in sequence with a non-woven fabric wrapping layer, an extruded isolation sleeve, a steel tape armor layer, an extruded outer sheath, and a protective layer.

[0035] In step S1, the control core is fabricated. Optical fibers, steel wire ropes, and flexible tubes are fabricated separately and then bundled into a cable. A control polyester tape layer is then fabricated around the bundled control core. Specifically, the control core includes extruded insulated optical fibers, steel wire ropes, flexible tubes, and a control polyester tape layer sequentially wrapped around the control insulation core. The steel wire rope in the control core is formed by twisting seven high-strength steel wires together, with a twist pitch not exceeding 10 times the outer diameter. The steel wire rope uses a 1+6 regular arrangement twisting structure, resulting in suitable twist pitch and better tensile and torsional resistance. Single-mode or multi-mode optical fibers are extruded with ETFE insulation; the average thickness is controlled within the range of 0.3–0.4 mm, and the thinnest point is controlled within the range of 0.25–0.35 mm. The flexible tube in the control core includes an outer tube and an inner tube. The outer tube is a rigid tube, and the inner tube is a flexible tube. The outer surface of the inner tube has a serrated structure, while the inner surface has a smooth circular structure. The inner tube is fitted inside the outer tube. An inner tube with serrated outer surface is used for elastic expansion and contraction. The serrations act as a buffer, while the outer tube acts as a limiter, preventing excessive expansion of the inner tube. Simultaneously, a high-temperature filler rope, composed of a flexible tube, optical fiber, and steel wire rope, is used as the cable sheath. This high-temperature filler rope has relatively low thermal conductivity, reducing pressure changes inside the flexible tube caused by external temperature variations. The controlled extruded insulation of the optical fiber, steel wire rope, and flexible tube is twisted into a cable, with a cable pitch not exceeding 10 times the outer diameter of the controlled core. After cabling, a thin polyester tape with a nominal thickness of 0.025mm is used for overlapping wrapping, with an overlap rate of not less than 5%.

[0036] The optical fiber insulation layer is extruded using an extruder. The extrusion temperatures are controlled sequentially as follows: Zone 1 185℃, Zone 2 190℃, Zone 3 210℃, Zone 4 230℃, Zone 5 245℃, and Zone 6 265℃, with an extrusion speed of 30 m / min. To improve the electrical performance and tensile strength of the control cable, ETFE material is used for the insulation. The average thickness is controlled within a range of 0.3–0.4 mm, with the thinnest point controlled within a range of 0.25–0.35 mm. Different extrusion temperatures are set for different insulation thicknesses to improve the fluidity of the compound within the die, resulting in a dense and smooth extruded surface.

[0037] In step S2, a central reinforcing core and an edge reinforcing core are fabricated. The central reinforcing core is made by extruding ETFE insulation onto seven strands of high-strength steel wire, with a nominal insulation thickness of 0.3 mm. The edge reinforcing core is made of foamed polyethylene in a saddle-shaped filler. Specifically, the central reinforcing core conductor is formed by twisting seven strands of steel wire, and the central reinforcing core insulation layer is extruded onto the conductor to form the central reinforcing core. The edge reinforcing core is made of six saddle-shaped fillers.

[0038] In step S3, the main conductor is fabricated. After the insulated conductor is stranded, a three-layer co-extrusion process is used to wrap the first shielding layer, the insulation layer, and the second shielding layer. Then, a copper tape shielding layer is wrapped over the second shielding layer, using copper tape with a nominal thickness of 0.10mm. The average overlap rate of the wrapping is 15%, with a minimum of 5%. The control conductor and the main conductor are arranged around the circumference of the central reinforcing core to form a cable, and edge reinforcing cores are set in the gaps on the outside of the cabled control conductor and the main conductor to form the cable core. Specifically, the insulated conductor is stranded in a regular arrangement of one single wire in the inner layer, six single wires in the middle layer, and twelve single wires in the outer layer. The middle layer and the outer layer are stranded in opposite directions. The stranding pitch of the middle layer does not exceed 20 times the outer diameter of the insulated conductor, and the stranding pitch of the outer layer does not exceed 12 times the outer diameter of the insulated conductor. Three co-extruded layers are extruded on the outside of the insulated conductor: the first shielding layer, the insulation layer, and the second shielding layer. An outer layer of copper tape shielding is wrapped around the insulating shielding layer, with an average overlap rate of not less than 15% and a minimum overlap rate of not less than 5%.

[0039] The first shielding layer and the insulating layer are extruded using an imported cross-linking machine; the reference temperatures for the insulating layer extruder are: hopper 50℃, barrel 1 temperature 112℃, barrel 2 temperature 116℃, barrel 3 temperature 116℃, barrel 4 temperature 116℃, barrel 5 temperature 116℃, barrel 7 temperature 116℃, fixture temperature 116℃, and connection temperature 116℃; the reference temperatures for the die head are: zone 1 118℃, zone 2 118℃, zone 3 120℃, zone 4 116℃, and zone 5 115℃; Reference temperatures for the shielding layer extruder: Barrel 1: 80℃, Barrel 2: 90℃, Barrel 3: 106℃, Barrel 4: 114℃, Fixture: 114℃, First Connection: 114℃, Second Connection: 114℃; Reference temperatures for the second shielding layer extruder: Barrel 1: 80℃, Barrel 2: 90℃, Barrel 3: 104℃, Barrel 4: 110℃, Fixture: 110℃, Connection: 110℃; Extrusion speed: 8m / min. To improve cable flexibility, each insulation layer is produced by extrusion, resulting in a dense, uniform thickness, and smooth surface.

[0040] In step S4, a non-woven fabric wrapping layer, an extruded isolation sleeve, a steel tape armor layer, an extruded outer sheath, and a protective layer are sequentially wrapped around the cable core. Specifically, a lightweight non-woven fabric with a thickness of 0.11mm and a width of 60mm is used for overlapping wrapping, with an overlap rate of 10% to 15%. After the non-woven fabric wrapping, an isolation sleeve is extruded. The extruded isolation sleeve is made of polyvinyl chloride (PVC) material, using a die core with an outer diameter 5.0mm larger than the theoretically calculated outer diameter and a die sleeve with an outer diameter 15mm larger than the theoretically calculated outer diameter. The extrusion process is used on an extruder. This improves the cable's impact strength, tear resistance, and tightness, and reduces the wear on the entire core after armoring.

[0041] To improve the impact and tensile strength of the cable, a two-layer steel tape armor layer with a gap is wrapped after the extrusion of the isolation sleeve. The armor uses galvanized steel tape with a nominal thickness of 0.5mm, and the tensile strength of the steel tape reaches 350MPa. The steel tape wrapping gap ratio is between 45% and 50%, and the wrapping speed reaches 19m / min.

[0042] The extruded isolation sleeve and extruded outer sheath are made of polyvinyl chloride (PVC) with a temperature resistance rating of 90 degrees Celsius. The extruded outer sheath is also made of PVC, using a die core with a theoretical outer diameter 5.0 mm larger than the theoretically calculated outer diameter and a die sleeve with a theoretically calculated outer diameter 15 mm larger than the theoretically calculated outer diameter. The protective layer is made of nylon, with a nominal thickness of 0.5 mm. The outer sheath and nylon are co-extruded in a double-layer process, with a grafting agent added during co-extrusion at a ratio of 20%. Production is carried out using a tube-type extrusion method on a double-layer co-extrusion die. This improves the cable's impact strength, tear resistance, and tightness, reduces surface abrasion during use, and expands the cable's application range. The double-layer co-extrusion process allows for abrasion testing; when an external force of 550 N is applied, after 250 abrasion cycles, no cracks appear on the inner or outer surfaces of the sheath. Simultaneously, the extruded nylon sheath exhibits termite and rat-bite resistance properties: it passes the JB / T10696.9-2011 termite and rat-bite resistance tests. Meanwhile, the double-layer co-extruded sheath can withstand the weight of a 60kg hammer impact from a height of 1 meter without any obvious cracks on the inner or outer surfaces. This double-layer co-extruded sheath effectively ensures the normal operation of the cable under complex environmental conditions. Furthermore, the cable uses an environmentally friendly nylon sheath, and most of the cable is made of recyclable materials. After the cable reaches its maximum service life, it can be recycled and reprocessed into other products.

[0043] This invention employs three control cores and three main cores circumferentially distributed around a central reinforcing core. Six saddle-shaped edge reinforcing cores are arranged in the gaps outside the control and main cores, creating a compact structure that enhances tightness and increases cable stability during frequent use. The cable core is further encased in a non-woven fabric wrapping layer, an extruded isolation sleeve, a steel tape armor layer, an extruded outer sheath, and a protective layer, increasing the cable's bending and tensile strength and extending its service life. The central reinforcing core uses seven high-strength steel wires twisted together and then extruded with ETFE insulation. The nominal insulation thickness is 0.3mm, with a suitable twist pitch, resulting in better tensile and torsional resistance. The extruded insulated optical fibers of the control cores can provide temperature sensing and early warning, real-time monitoring, and fault alarms as needed. The temperature sensing accuracy is ±1℃, the vibration warning detection distance is 50km, and the positioning accuracy is 2m. Temperature monitoring and early warning at intermediate joints are achieved through infrared temperature sensing with visualization capabilities, enabling comprehensive monitoring of urban roads, building safety, and other aspects. The cable produced by the manufacturing process of this invention has excellent impact resistance and bending performance. By using insulation layers with different extrusion temperatures, the impact resistance and bending performance are further enhanced, making it easy to promote and reducing the cost of use.

[0044] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0045] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An environmentally friendly, rodent- and ant-proof intelligent AI early warning cable, characterized in that, include: The central reinforcing core has three control wire cores and three main wire cores distributed around its outer circumference. Six edge reinforcing cores are saddle-shaped fillings in the gaps outside the three control wire cores and three main wire cores. The control wire cores and main wire cores are wrapped with a non-woven fabric layer. The wrapping layer is surrounded by an extruded isolation sleeve. The extruded isolation sleeve is surrounded by a steel strip armor layer. The steel strip armor layer is surrounded by an extruded outer sheath. The extruded outer sheath is surrounded by a protective layer.

2. The environmentally friendly rodent-proof and ant-proof intelligent AI early warning cable according to claim 1, characterized in that, The control core includes three equally divided circumferentially distributed optical fibers, steel wire ropes, and hoses, as well as a control polyester tape layer disposed outside the optical fibers, steel wire ropes, and hoses.

3. The environmentally friendly rodent-proof and ant-proof intelligent AI early warning cable according to claim 2, characterized in that, The polyester tape layer is controlled to use a thin polyester tape with a thickness of 0.025mm. The optical fiber is extruded with ETFE material, with an average thickness range of 0.3mm to 0.4mm and a minimum thickness range of 0.25mm to 0.35mm.

4. The environmentally friendly rodent-proof intelligent AI early warning cable according to claim 2, characterized in that, The optical fiber uses single-mode or multimode optical fiber, and the steel wire of the steel rope uses ultra-high strength steel wire with a tensile strength of 3000MPa to 4000MPa. The flexible tube includes an outer tube and an inner tube. The outer tube is a rigid tube, and the inner tube is a flexible tube. The outer surface of the inner tube has a serrated structure, and the inner surface has a smooth circular structure. The inner tube is fitted inside the outer tube. The twist pitch of the optical fiber, steel wire rope and flexible tube does not exceed 10 times the outer diameter of the control core.

5. The environmentally friendly rodent-proof and ant-proof intelligent AI early warning cable according to claim 1, characterized in that, The main conductor consists of an insulated core conductor and a first shielding layer, an insulation layer, a second shielding layer, and a copper strip shielding layer wrapped around the insulated core conductor. The insulated core conductor is stranded in a regular arrangement of one single wire in the inner layer, six single wires in the middle layer, and twelve single wires in the outer layer. The middle and outer layers are stranded in opposite directions. The stranding pitch of the middle layer does not exceed 20 times the outer diameter of the insulated core conductor, and the stranding pitch of the outer layer does not exceed 12 times the outer diameter of the insulated core conductor.

6. The environmentally friendly rodent-proof intelligent AI early warning cable according to claim 1, characterized in that, The central reinforcing core is made of 7 ultra-high strength steel wires twisted together to form a steel wire rope. The outer side of the steel wire rope is extruded with fluoroplastic with a nominal thickness of 0.5mm. The fluoroplastic material is ETFE, and the thinnest point of the fluoroplastic protective layer is 0.35mm.

7. The environmentally friendly rodent-proof and ant-proof intelligent AI early warning cable according to claim 1, characterized in that, The nonwoven fabric wrapping layer uses a lightweight plain weave nonwoven fabric with a thickness of 0.11mm and a width of 60mm, with an overlap rate of 10% to 15%.

8. The environmentally friendly rodent-proof and ant-proof intelligent AI early warning cable according to claim 1, characterized in that, The galvanized steel strip with the steel strip armor layer has a tensile strength of 350 MPa and a steel strip wrapping gap ratio of 45% to 50%.

9. The environmentally friendly rodent-proof and ant-proof intelligent AI early warning cable according to claim 1, characterized in that, The extruded isolation sleeve and extruded outer sheath are made of polyvinyl chloride material with a temperature resistance rating of 90 degrees Celsius, and the protective layer is nylon with a nominal extruded thickness of 0.5 mm.

10. A method for producing an environmentally friendly rodent-proof intelligent AI early warning cable, applicable to the environmentally friendly rodent-proof intelligent AI early warning cable as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Separately fabricate optical fibers, steel wire ropes, and flexible hoses, and then combine the optical fibers, steel wire ropes, and flexible hoses into a cable. Finally, fabricate a control polyester tape layer on the outside to form the control core. S2. Seven high-strength steel wires are twisted together and then extruded with ETFE insulation to make a central reinforcing core and an edge reinforcing core. S3. Make the main core by arranging the control core and the main core around the circumference of the central reinforcing core to form a cable, and setting edge reinforcing cores in the gaps on the outside of the control core and the main core to form the cable core. S4. The cable core is wrapped in sequence with a non-woven fabric wrapping layer, an extruded isolation sleeve, a steel tape armor layer, an extruded outer sheath, and a protective layer.

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