200results about "Power cables including optical transmission elements" patented technology

The invention discloses a photoelectric composite aluminum alloy conductor aerospace cable and a preparation method, and belongs to the technical field of photoelectric composite cables, the cable comprises an optical fiber unit, a conductor unit, an insulating layer, an anti-electromagnetic unit and a sheath layer; the anti-electromagnetic unit is obtained by weaving double-layer metallized polyimide fibers; the double-layer metallized polyimide fiber sequentially comprises a polyimide fiber, a first metal coating and a second metal coating from inside to outside. The surface of the polyimide fiber is coated with modified polydopamine; the first metal coating is copper; and the second metal coating is silver and / or nickel. The double-layer metal coating can form a more compact metal outer layer on the surface of the polyimide fiber, the requirements of the severe external environment of aerospace are met, a conductive network with higher stability is formed, and the electromagnetic shielding effect is remarkably improved. Moreover, the polyimide fiber is coated with a polydopamine coating, so that the fiber is not damaged, and the overall high and low temperature resistance and radiation resistance can be improved.

A photoelectric composite flexible high-voltage reel cable, including a polyethylene outer sheath (1), a double-face plastic-coated steel belt (2) connected to an inner side of the polyethylene outer sheath (1), an insulating tape (3) connected to an inner side of the double-face plastic-coated steel belt (2), an anti-crack protective sleeve (4) connected to an inner side of the insulating tape (3), and a power cord body (6), a filler rope (7), a reinforcement (9) and an optical fiber body (8) sequentially distributed on an inner side of the anti-crack protective sleeve (4) from top to bottom, where the power cord body (6), the filler rope (7) and the optical fiber body (8) are distributed on a peripheral side of the reinforcement (9). The photoelectric composite flexible high-voltage reel cable further includes a metal radiating column (11), movable balls (13), a rubber air bag (14), and a conveying pipe (15).

A photoelectric composite cable for an underwater buoy, and a preparation process therefor. A polyurethane, a self-repairing polyurethane prepolymer, and a composite nano zinc oxide are selected as an outer sheath base material. A modified polysiloxane having a B-O six-membered ring dynamic cross-linked network and a long-chain alkane group and an amino is introduced into the self-repairing polyurethane prepolymer; 5,5'-methylenedisalicylaldehyde and isophorone diisocyanate are together subjected to stepwise polymerization with the modified polysiloxane, and the 5,5'-methylenedisalicylaldehyde is cross-linked with diphenylmethane diisocyanate to obtain a self-repairing polyurethane prepolymer; and nano zinc oxide is subjected to a modification treatment, wherein dodecyltrimethoxysilane and 3-glycidoxypropyltrimethoxysilane are used for dual modification, such that super-hydrophobic nano zinc oxide having good thermal stability and high dispersity is prepared in a toluene system.

The invention discloses a multifunctional medium-voltage cable for power transmission, and relates to the technical field of cables, the outer side end of a transmission wire core is sleeved with an inner special-shaped insulation sleeve, a plurality of power connection processing strips are embedded into the outer side end of the inner special-shaped insulation sleeve at equal intervals, and the outer side ends of the inner special-shaped insulation sleeve and the power connection processing strips are sleeved with a central insulation sleeve; according to the invention, the external staggered heat insulation strips are utilized to reduce the influence of the external environment on the interior of the cable, and at the same time, the stable heat dissipation of the interior of the cable is ensured, so that the service life of the cable is prolonged, and the service life of the cable is prolonged. Therefore, when the cable runs, the situation that the internal temperature change is too large or too high due to the fact that the heat conduction part cannot be automatically adjusted can be avoided, the situation that the insulation part of the cable is accelerated to age due to continuous thermal expansion and cold contraction or excessive heating is reduced, the running stability of the cable is improved, and the service life of the cable is prolonged.

The invention discloses a high-flexibility multifunctional cable and a manufacturing process and application thereof, and relates to the technical field of communication cables.The high-flexibility multifunctional cable comprises at least one conductor unit, and each conductor unit comprises a conductive wire core formed by twisting a plurality of metal conductors and a first inner insulating layer wrapping the exterior of the conductive wire core; the functional unit and the conductor unit are arranged in a bundling mode, the functional unit comprises a functional core body, a second inner insulating layer and a lapped inner shielding layer, the functional core body is wrapped with the second inner insulating layer, and after the conductor unit and the functional unit are combined, the conductor unit and the functional unit are sequentially wrapped with an outer shielding layer, a buffer layer, an armor layer and an outer sleeve layer from inside to outside. According to the invention, application scenes in main connecting pieces such as electric power communication composite power supply / transmission umbilical cords, aerospace cabin-out system umbilical cords, industrial robot automatic mechanical arms and the like can be met.

The invention relates to a cable structure and a manufacturing method thereof, the cable structure comprises a cable conductor, and the cable conductor comprises a center line and an external conductor wrapping the center line; the center line comprises an optical fiber, a conductor tube and a stranded wire; the optical fiber is arranged in the conductor tube in a penetrating mode, and the conductor tube is wrapped with the stranded wire. Thus, the optical fiber can be prevented from being damaged and even broken in the using process, the temperature of the cable conductor can be accurately monitored through the optical fiber, the safety and reliability of the cable structure are improved, meanwhile, the mechanical performance and the current-carrying capacity of the cable structure can be guaranteed, and the cable structure can provide support for safe operation of a power system; in addition, the manufacturing cost of the cable structure can be reduced, the weight of the cable structure is reduced, and the cable structure is convenient to install.

The invention relates to the technical field of composite armored cables, and discloses an intelligent sensing type photoelectric composite armored cable for deep-sea mining equipment, which comprises a cable core formed by twisting a plurality of power cable core conductors, an optical fiber communication unit, a medium conveying pipeline and an intelligent sensing unit, and an outer coating layer, tin-plated annealed copper wires and high-strength copper foil wires are arranged in a conductor of the power cable core, an insulation shielding layer is wrapped outside the conductor, the intelligent sensing unit integrates a plurality of optical fibers and optical fiber grating sensors, a loose structure is arranged outside the intelligent sensing unit, one intelligent sensing unit is used for monitoring strain distribution, the other intelligent sensing unit is used for monitoring temperature distribution, and other redundant optical fibers are used as redundant backups. A certain length of grid region interval is preset, distributed measurement along the length of the cable is realized, a sensing optical fiber in the intelligent sensing unit is connected to an optical fiber demodulator of a deck control room, a software system displays strain, temperature, vibration and form data of each point of the cable in real time, an alarm threshold value is set, and the structure is highly integrated and can adapt to a deepwater environment.

The invention provides a safety monitoring method and device applied to a cable pipe gallery and a storage medium, and the method comprises the steps: controlling an inspection trolley to carry out the inspection of an area where a cable assembly is located, so as to obtain a surface temperature; judging whether a refrigerating system arranged in the internal space is operated or not according to the surface temperature; and if yes, the refrigerating temperature and the air outlet angle of the refrigerating system are adjusted according to the surface temperature and the indoor environment temperature of the inner space. The technical problems that a traditional cable temperature monitoring method mainly depends on manual inspection or a fixed temperature sensor, and manual inspection is low in efficiency, poor in real-time performance, difficult to cover all areas and the like are solved. A fixed temperature sensor has the defects of limited installation position, limited monitoring range, difficulty in flexible adjustment and the like. In addition, the internal environment of the cable pipe gallery is complex, the space is long and narrow, air circulation is not smooth, a local high-temperature area is easily formed, and a traditional temperature monitoring method is difficult to meet comprehensive and accurate monitoring requirements.

The invention provides a novel intelligent early-warning fire-resistant medium-voltage cable and a preparation method thereof, and the cable comprises a cable core which comprises a conductor which is formed by compressing and twisting a plurality of annealed soft copper wires; the communication optical cable and the temperature measuring optical cable are arranged in the cable core, the temperature measuring optical cable is used for collecting whole-line temperature signals of the cable in real time, and the communication optical cable is used for receiving the whole-line temperature signals of the cable collected by the temperature measuring optical cable in real time, converting the signals into optical signals and transmitting the optical signals to a control terminal; the control terminal analyzes the received temperature data and controls the working state of the early warning device. The fireproof structure is arranged on the outer side of the cable core; the protective layer structure is arranged on the outer side of the fireproof structure; real-time monitoring, transmission and early warning of fire temperature signals are achieved through the optical cable communication technology, meanwhile, the continuous power supply and information transmission capacity of the cable in the fire high-temperature environment is ensured, precious time is won for rescue, and the use safety of the cable is improved.

The invention relates to the technical field of cables, in particular to a strong-acid-resistant and high-temperature-resistant silicone rubber cable and a processing technology thereof.The strong-acid-resistant and high-temperature-resistant silicone rubber cable sequentially comprises a multi-core insulating wire core, a filling layer, a cabling cable core wrapping tape, a shielding layer, an optical fiber unit, a buffer layer, a fluorocarbon protective layer and a corrosion-resistant and high-temperature-resistant sheath layer from inside to outside. Through the multi-layer protection design of the conductor anticorrosion priming coat, the insulating layer fluorosilicone resin protection layer, the filling layer-wrapping tape-buffer layer ceramic silicone rubber synergistic protection, the hydrophobic anti-permeation interlayer and the sheath layer acid-resistant filler, a compact acid-resistant protection system is formed, the cable is soaked in sulfuric acid / hydrochloric acid with the concentration of 50% and the temperature of 250 DEG C for 720 h, and the cable has the good anti-corrosion performance. The sheath layer and the wrapping tape do not crack, swell or fall off, the insulation performance is not obviously reduced, the problem that an existing cable is prone to aging and damage under strong acid is solved, double corrosion prevention of the conductor is achieved, and strong acid corrosion is thoroughly avoided.

The invention discloses a high-flame-retardant temperature-resistant corrosion-resistant optical fiber composite cable and a preparation method thereof, and belongs to the technical field of cable manufacturing, and the high-flame-retardant temperature-resistant corrosion-resistant optical fiber composite cable sequentially comprises an optical fiber unit, a conductor layer, an insulating layer, a shielding layer, a corrosion-resistant layer and a sheath layer from inside to outside. The optical fiber unit adopts a ceramic silicone rubber buffer layer; the conductor layer is a nickel-plated copper alloy stranded wire, and the oxidation resistance is enhanced through nano titanium dioxide sol treatment; the insulating layer is of a three-layer co-extrusion structure; the shielding layer adopts an aluminum-plastic composite belt and tinned copper wire braided composite structure; the anti-corrosion layer is a polytetrafluoroethylene film subjected to plasma treatment; the sheath layer is made of two-component ceramic silicone rubber, is flexible after being vulcanized at normal temperature, and is converted into a ceramic body at high temperature. According to the optical fiber composite cable, through the collaborative design of a multi-layer structure, the performance of excellent continuous use stability, high salt mist environment corrosion resistance and the like is achieved, the optical fiber composite cable is suitable for high-temperature, corrosion, fire and other severe environments, and the safety and durability of the composite cable are remarkably improved.

The invention discloses an intelligent composite cable based on modal isolation and a preparation method thereof. The cable comprises a power transmission layer, a control signal layer, an optical fiber communication layer and an intelligent protection and external shielding layer which are sequentially arranged from inside to outside. The power transmission layer comprises a conductor layer, a conductor insulation layer and a first shielding layer for attenuating a low-frequency strong magnetic field which are sequentially arranged from inside to outside; the control signal layer comprises a total shielding layer and a plurality of control wire cores which are uniformly arranged between the total shielding layer and the power transmission layer along the circumferential direction, and each control wire core is provided with a branch shielding layer; the optical fiber communication layer comprises a plurality of optical fiber groups which are uniformly arranged along the circumferential direction, each optical fiber group is provided with a second shielding layer for electric absorption, and the second shielding layer is a non-metal shielding layer; the intelligent protection and external shielding layer is provided with a third shielding layer used for equipotential shielding. According to the invention, a layered composite structure is adopted, the reliability of mechanical performance is ensured, and an asymmetric shielding framework is adopted, so that full-spectrum interference suppression from extremely low frequency to high frequency is realized.

There is disclosed a power cable (11) for use in a subsea power umbilical (2,7), said power cable (11) comprising from inside to outside a central conductor (20), an electrical insulation layer (23), a metallic screen (28) and an external polymeric sheath (29), said central conductor (20) or said metallic screen (20) comprising at least one conductive wire (21, 26, 30), wherein said at least one conductive wire (21, 26, 30) comprises a metal core (31) coated with a copper cladding (32). Also disclosed is a subsea power cable comprising such a power cable, and a method of increasing the slippage of conductive wires (21,26,30) of a metallic screen (28) during bending of a power cable (11 ) for use in a subsea power umbilical (2,7), said power cable (11 ) comprising from inside to outside a central conductor (20), an electrical insulation layer (23), the metallic screen (28) and an external polymeric sheath (29), wherein the method comprises at least the step of increasing the tensile modulus of the conductive wires (21, 26, 30).

This invention discloses a smart composite cable based on modal isolation and its fabrication method. The cable comprises, from the inside out, a power transmission layer, a control signal layer, an optical fiber communication layer, and a smart protection / external shielding layer. The power transmission layer comprises, from the inside out, a conductor layer, conductor insulation, and a first shielding layer for attenuating low-frequency strong magnetic fields. The control signal layer comprises a total shielding layer and multiple control cores uniformly arranged circumferentially between the total shielding layer and the power transmission layer, with each control core having a sub-shielding layer. The optical fiber communication layer comprises multiple optical fiber groups uniformly arranged circumferentially, with each optical fiber group having a second shielding layer for electro-absorption; the second shielding layer is a non-metallic shielding layer. The smart protection / external shielding layer has a third shielding layer for equipotential shielding. This invention employs a layered composite structure to ensure mechanical performance reliability and uses an asymmetric shielding architecture to achieve full-spectrum interference suppression from extremely low frequencies to high frequencies.

A flame-retardant cable includes at least one core having a conductor and at least one protecting layer surrounding the core. The protecting layer is made from a low smoke zero halogen (LS0H) flame-retardant polymer composition having at least 70 phr of a polyethylene homopolymer or copolymer having a density lower than 0.90 g / cm3 as a halogen-free polymeric base, 100 to 800 phr of at least one metal hydroxide, and at least 10 phr of a tannin.

A synthetic rope or cable having a supportive core (1) contained within an internal cavity of a hollow braided synthetic strength member (5), the supportive core (1) shaped to adapt to the internal cavity of the hollow braided synthetic strength member (5), the supportive core (1) sheathed within a flow shield (4); the hollow braided synthetic strength member (5) formed about the combination of the supportive core and the flow shield that sheaths the core; the flow shield formed of the braid strands and being a hollow braided construction; and the hollow synthetic strength member formed of the braided braid strands, characterized in that each braid strand forming a braided flow shield is formed of at least two yarns.

The invention relates to a stealth underwater detection optical cable and a manufacturing method, the stealth underwater detection optical cable comprises a cable core, the periphery of the cable core is provided with a protective sleeve, the protective sleeve comprises a protective inner ring and a deformation layer which are of an integrated structure, the deformation layer is composed of deformation protruding strips which are annularly and uniformly distributed, and the deformation protruding strips are spirally arranged on the periphery of the protective inner ring; the radial section shape of the deformation protruding strip changes continuously. The periphery of the protective sleeve is of a structure that deformation protruding strips which are arranged in an SZ spiral mode are provided with different reflecting surfaces at different positions. If a stealth coating is coated on the outer surface of the deformation protruding strip of the protective sleeve, reflecting surfaces of electromagnetic waves and vibration shock waves with better effects in different directions and areas are formed, and the electromagnetic waves and the vibration shock waves of the detection cable are directionally emitted by a competitor to be dispersed and echo through the reflecting surfaces of the stealth coating on the two sides of the deformation protruding strip. The intensity of reflection echoes of the detection cable is greatly reduced, that is, the effective reflection area of the cable is greatly reduced.

The invention relates to the technical field of cables, solves the problem that an existing aerospace cable is insufficient in vibration fatigue resistance and high-energy radiation resistance, and particularly discloses a multi-layer shielding optical fiber composite aerospace cable and a preparation method thereof.The multi-layer shielding optical fiber composite aerospace cable comprises an insulating layer, an inner shielding layer, a buffer bonding layer and an outer shielding layer which are sequentially arranged from inside to outside; a conductor core and an optical fiber bundle are arranged in the insulating layer, and the insulating layer comprises a bonding transition layer, a core insulating layer and an anti-radiation protection layer from inside to outside; the inner shielding layer comprises a nano-silver conductive film and a silicone rubber elastic layer, and the nano-silver conductive film is arranged on the inner side of the silicone rubber elastic layer; the outer shielding layer is provided with a nickel-copper alloy wire woven mesh; and the buffer bonding layer is provided with a modified polyimide adhesive layer. According to the optical fiber composite aerospace cable and the preparation process thereof, the shielding, buffering and interlayer bonding performance of the cable is guaranteed through control over the inner shielding layer, the buffering bonding layer and related preparation parameters, and the optical fiber composite aerospace cable adapts to aerospace application requirements.

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.

This application discloses an optical and electrical composite cable designed for simultaneous installation within pipelines, along with its processing and installation methods. By providing a composite cable with a thin wall and compact overall size, it allows the commercially available thin pipelines ranging from 6 mm to 13 mm in diameter to accommodate both optical and electrical cables in a single pass. This design reduces the amount of pipeline material needed and shortens installation time, while broadening the potential applications for these types of pipelines and improving their utilization. Since the optical and electrical composite cable is installed within a pipeline, it does not require self-supporting overhead structure, which simplifies its design. The thinner optical cable is connected to the thicker electrical cable, allowing the electrical cable to provide necessary tensile strength to the optical cable. This simplified approach to tensile strength ensures that the composite cable meets required strength standards despite its smaller size.

The invention relates to the technical field of smart power grids, and provides a tough composite carbon fiber core-based power transmission conductor and a preparation method thereof, and the method comprises the steps: assembling an SMA silk screen layer, a plurality of sensing optical fibers and a carbon fiber bundle into an integrated bundle body through bundling, coating the integrated bundle body through vacuum impregnation, and carrying out the curing molding of the impregnated and coated integrated bundle body, thereby obtaining the tough composite carbon fiber core-based power transmission conductor. And grating inscribing and secondary packaging are carried out on the optical fibers in the integrated beam body in the curing molding process. According to the transmission conductor based on the tough composite carbon fiber core and the preparation method of the transmission conductor, the inherent brittle fracture behavior of a traditional carbon fiber composite core can be effectively improved, the transmission conductor has excellent toughness and damage tolerance when bearing complex external force, has excellent thermal stability, long-term reliability and low linear expansion coefficient, and can realize damage early warning; a precious intervention time window is provided for operation and maintenance personnel, and the conversion from passive fault handling to active risk early warning is realized.

The invention relates to a flexible light composite cable pipe with health monitoring for seabed resource development, which comprises a non-adhesive multi-layer heterostructure, and the multi-layer heterostructure sequentially comprises a reinforced lining layer, a tensile armor layer, a middle sheath layer, a functional cable layer and an outer sheath layer from inside to outside; the reinforced lining layer is formed by compounding a supporting structure and a rubber material, and the supporting structure is formed by spirally winding a stainless steel band with a special-shaped section at a large angle; the inner side and the outer side of the tensile armor layer are wear-resistant layers, at least two tensile mechanical armor layers are arranged in the tensile armor layer, the number of the tensile mechanical armor layers is an even number, and a wear-resistant layer is arranged between every two adjacent tensile mechanical armor layers; the functional cable layer is formed by spirally winding a plurality of functional cables and filling strips; the layers are in close contact and are independent from one another, and the layers can slide relative to one another. The weight and bending rigidity of the pipe body are reduced, and the tensile rigidity and flexibility of the pipe body are improved.

“A power cable arrangement (28,40), having a power core with one or more conductors, an intermediate layer disposed about the power core, a water barrier layer tightly arranged about the intermediate layer, and a moisture ingress detection device (10,29) arranged between the water barrier layer and the intermediate layer in direct contact with the water barrier layer. The moisture ingress detection device has an elongated optical fiber (12) surrounded by a water-swellable material (14,32), the swellable material arranged to expand upon contact with moisture and exert a pressure on the underlying optical fiber sufficient to cause an observable change in the attenuation and / or propagation characteristics of the optical fiber.”

A drop cable includes a transmission core, a strength member arranged alongside the transmission core and an outer sheath surrounding the transmission core and the strength member. The transmission core comprises two insulated conductors and an optical sub-core comprising six or more optical fibers, the optical sub-core and the insulated metallic conductors being stranded together and surrounded by a sleeve. Moreover, a diameter of the strength member is substantially equal to or higher than a diameter of the transmission core.

A power cable includes: a cable body including a conductor, an insulating layer, a semiconductive layer, and a sheath; a first optical fiber that transmits sensing light; a second optical fiber that transmits backscattered light of the sensing light; an optical fiber that transmits first excitation light for amplifying the sensing light; an optical fiber that transmits second excitation light for amplifying the backscattered light; and at least one optical amplifier repeater that amplifies the sensing light with the first excitation light, and amplifies the backscattered light with the second excitation light.

Provided is a passive luminescent cable. The passive luminescent cable includes a cable core and an outer sheath. The outer sheath is wrapped outside the cable core, and the cable core includes at least a power wire core, a ground wire core, an electromagnetic field energy collection wire core and a light strip. The electromagnetic field energy collection wire core includes a magnetic conducting wire core and multiple first conductor wires. Each first conductor wire is wound outside the magnetic conducting wire core to form a coil, and two ends of the first conductor wire are respectively connected to two electrodes of the light strip to form a loop. The outer sheath and a protective sleeve of the light strip are made of a light-transmitting material.

The invention relates to a light-weight water floating photoelectric composite cable. An inner sheath layer, a sectional buoyancy layer, a tensile reinforcing layer and an outer sheath layer are sequentially wrapped outside a photoelectric composite cable core; the photoelectric composite cable core is formed by twisting a conductive core wire and an optical fiber unit, water-blocking yarns are filled between the conductive core wire and the optical fiber unit, and a water-blocking tape is wrapped outside the photoelectric composite cable core; the sectional type buoyancy layer is arranged in a sectional mode in the length direction of the cable, a continuous sealing structure is formed between every two adjacent sections through hot melting, and an electronic tag is embedded in the sectional type buoyancy layer; and each section of the sectional buoyancy layer is of a structure with a large middle part and two small ends. Due to the structure of the sectional buoyancy layer, the overall size is lighter, impact force can be dispersed and dynamic stability can be kept when the water flow impact occurs, and the tensile strength is improved by 60% in cooperation with the tensile reinforcing layer. The double-layer sectional buoyancy layer structure can adjust and control the buoyancy during manufacturing according to the use occasion of the cable so as to adapt to the requirements of different water depths and loads.

The application relates to the technical field of intelligent cables, and discloses an intelligent cable based on dynamic monitoring information feedback and a preparation method thereof. The intelligent cable comprises an insulating wire core, a coaxial corrugated aluminum sleeve and an anti-abrasion layer are arranged on the circumferential side of the insulating wire core, an accommodating area is formed in the insulating wire core, a temperature measuring optical fiber is arranged in the accommodating area, and the temperature measuring optical fiber is wrapped on the outer side of a separated conductor structure. The insulating wire core comprises the separated conductor structure, the separated conductor structure is composed of a flat cable core and a plurality of cable strands which are uniformly wound outside the cable core, and the plurality of cable strands are arranged on the cable core in a spiral track. The arrangement position of the temperature measuring optical fiber is optimized, the temperature measuring optical fiber is arranged away from the corrugated aluminum sleeve, and is arranged in a fan-shaped accommodating area formed between the spiral cable strands, so that the tensile stress and the compressive stress of the temperature measuring optical fiber are minimized when the cable is bent, and the temperature measuring optical fiber can be effectively prevented from being directly attached to the inner side of the aluminum sleeve and being damaged under pressure.

The invention discloses a composite intelligent cable for the Internet of Things, and relates to the technical field of cables, a plurality of sensing optical fibers and a communication wire core are compositely twisted through a second wrapping protection layer, and a tensile layer is arranged on the outer side of the sensing optical fibers, so that the cable has high-quality tensile protection on the optical fiber wire core; the tensile-sensing integrated design is realized; mechanical stress is dispersed, dynamic parameter accurate monitoring is achieved through the integrated sensing optical fiber, the tensile strength is improved, the bending life is prolonged, and meanwhile the transmission error rate is effectively reduced. The cable storage frames are arranged at the two ends of the cable, the redundancy release amount of optical fibers can be effectively increased, the fracture rate of the optical fibers is reduced, and signal attenuation caused by bending of the sensing cable cores is reduced in combination with the elastic supporting pieces.

The invention relates to the technical field of submarine cables, and provides a large-diameter and large-thickness submarine cable and a cooling and conveying device, and the large-diameter and large-thickness submarine cable comprises a cable core, a cabling wrapping tape layer, a general wrapping inner protection layer, an armor layer and an outer protection layer. The cable core comprises an electric unit and an optical unit, the electric unit is provided with a conductor, the conductor is of a multi-layer structure, and semi-conductive water-blocking glue is arranged between every two adjacent layers of structures; and both the inner sheath and the outer sheath are prepared from medium-density insulating polyethylene through pressurization and extrusion. According to the submarine cable, the medium-density insulating polyethylene is adopted, so that the inner sheath and the outer sheath which are wrapped together keep relatively good structural strength and environmental stress cracking resistance for a long time, and the submarine cable is prevented from entering water or cracking; the inner protection layer and the outer protection layer are wrapped in a pressurized extrusion mode, so that the medium-density insulation polyethylene can fill gaps on the outer side of the cabling belting layer and the outer side of the armored belting layer, and the problem that the submarine cable in the prior art is poor in water resistance and cracking resistance is solved.