236results about "Submarine cables" patented technology

The invention relates to the technical field of trailing cables, and discloses a high-tensile-strength lightweight deep sea trailing cable, which is characterized in that the outer side of a copper conductor is coated with an insulating layer, the periphery of an inner support piece is coated with a heat dissipation layer capable of uniformly transferring heat, the outer side of the heat dissipation layer is provided with a waterproof layer capable of blocking and preventing water, the waterproof layer is embedded in the inner side of a tensile inner layer, and the tensile inner layer is provided with a waterproof layer. According to the invention, the heat transfer and heat dissipation capability in the cable is effectively improved, the passive water blocking and active water stopping capability in the cable is enhanced, the tensile inner layer endows the cable with excellent tensile strength, and the pressing layer greatly improves the pressure resistance and compression resistance of the cable, so that the cable has the capability of stable operation in severe environments of high pressure and low temperature in deep sea, and the service life of the cable is prolonged. In addition, a light-weight fiber material is used for replacing a traditional metal material, the high tensile property is guaranteed, meanwhile, light weight of the cable is achieved, the dragging resistance is reduced, and the comprehensive use requirement for high tensile strength and light weight is met.

The invention relates to the technical field of communication cables, and discloses a water-blocking flame-retardant underwater communication cable with a self-repairing function, which comprises an insulating layer, a conductor layer is arranged in the insulating layer, an optical fiber layer is arranged in the conductor layer, a spiral groove is formed in the outer wall of the insulating layer, and a Bragg grating is wound in the spiral groove. A shielding layer is arranged outside the insulating layer, a radial waterproof layer is arranged outside the shielding layer, and an inner sheath is arranged outside the radial waterproof layer; parts providing communication, power supply and sensing monitoring functions share one set of shielding layer, radial waterproof layer and composite armor layer, so that the complexity of underwater deployment of the cable is reduced; the formed air cavity is used for providing space for heating expansion of the cable, meanwhile, airflow moving in the air cavity can conduct local heat exchange with the conductor layer, and local overheating of the cable is avoided; the composite armor layer with a double-layer structure can prevent the braided belt from deviating and being unable to reset due to excessive local stretching, and the service life of the cable is prolonged.

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 belongs to the technical field of cable preparation methods, and provides a preparation method of an offshore photovoltaic cable and the cable, and the preparation method comprises the steps: S1, carrying out the wire drawing and annealing of a high-purity copper rod, and then carrying out the stranding, thereby forming a stranded flexible conductor; s2, extruding a cross-linked polyethylene material on the surface of the stranded flexible conductor, and forming an extruded insulating layer after cross-linking; s3, twisting a plurality of insulated wire cores rightwards, filling a polypropylene rope and wrapping a high-strength non-woven fabric; s4, extruding a chloroprene rubber material outside the high-strength non-woven fabric, and forming an extruded inner sheath after vulcanization; s5, weaving a special-shaped copper and steel wire mixed armor layer outside the inner sheath; and S6, extruding a polymer material containing an antifouling agent outside the armor layer. Compared with the prior art, according to the cable production method in the scheme, from flexible conductor twisting to outer sheath layer extruding, each layer is optimally designed for specific challenges of the marine environment, the specific challenges include the twisting mode, the twisting pitch, tension control and the like, and laying in the complex marine environment is facilitated.

The utility model discloses a polyurethane watertight photoelectric composite cable, and relates to the technical field of watertight photoelectric composite cables. The composite cable comprises the outer sheath, the inner sheath, the optical fiber unit and the power line, the inner sheath is arranged in the outer sheath, the overall use strength of the composite cable is improved through the outer sheath and the inner sheath, and the armor layer is arranged between the outer sheath and the inner sheath, so that even if the outer sheath is broken, the optical fiber unit can be prevented from being damaged, and the service life of the composite cable is prolonged. The inner sheath is protected through the armor layer, the first water-blocking tape is made of a material formed by compounding polyester fibers and a high-water-absorption material after meeting water, and when water enters a cable port using the water-blocking tape, high-water-absorption powder or a water-swelling material contained in the water-blocking tape can absorb the water through the water absorption performance of the high-water-absorption powder or the water-swelling material. And the water-blocking tape expands to become gel to form a protective barrier for preventing water from flowing, namely, the protective barrier performs waterproof protection between the broken part of the outer sheath and the armor layer.

The invention relates to a power transmission flexible bus which has three waterproof layers from inside to outside through the arrangement of a metal protection layer, a first waterproof layer and a second waterproof layer, ensures the electrical insulation, and also has the waterproof effect through the arrangement of a mechanical protection layer. Stable and reliable protection is formed on the surface of a product, which is directly exposed to seawater, and the mechanical strength is improved; therefore, the waterproof and compressive properties of the product in the deep sea environment are remarkably improved, the use safety of the product is effectively improved, and the service life of the product is effectively prolonged. Meanwhile, through the arrangement of the first lining layer and the second lining layer, stable and reliable supporting and buffering are formed for the metal protection layer and the mechanical protection layer, the metal protection layer is prevented from damaging the insulating layer, the mechanical protection layer is also prevented from damaging the second waterproof layer and the metal protection layer, and the durability of each layer of the product is further ensured; mutual damage between different layers is avoided, and the function integrity of the function of each layer in the preset use period is guaranteed.

The invention provides a three-core submarine cable metal sheath induced voltage elimination method, which comprises the following steps: acquiring a first induced voltage threshold value of a submarine cable sea area section, and acquiring a second induced voltage threshold value of a submarine cable land section; according to a submarine cable metal sleeve distributed induced voltage calculation model, calculating a first segment length of the submarine cable generating a first induced voltage threshold under a wet condition; according to a submarine cable metal sleeve distributed induced voltage calculation model, calculating a second segment length of the submarine cable generating a second induced voltage threshold under a dry state condition; and performing mutual short-circuit processing on the three-phase metal sleeve of the submarine cable with the first segment length or the second segment length. The three-phase metal sleeves of the submarine cable are subjected to mutual short-circuit treatment, so that the problem that the PE semi-conductive layer is overheated and melted due to temperature rise caused by rise of induced voltage of the three-phase metal sleeves can be prevented.

The application relates to the technical field of submarine cables, and discloses a cross-linked polyethylene insulated submarine cable, which comprises a polyethylene sheath, the inner wall of the polyethylene sheath is fixedly connected with an insulation layer, the inner wall of the insulation layer is fixedly connected with a conductor, the outer side of the polyethylene sheath is provided with a shell, the shell is used for butt joint and protection of the connecting part of two cable sections, the two side inner surfaces of the shell are fixedly connected with inner clamping rings, the inner clamping rings are used for supporting the cable, the circumferential surface of the polyethylene sheath is fixedly connected with an annular clamping seat, the annular clamping seat is used for mounting the cable, in the application, the annular clamping seat is clamped with a limiting groove and a positioning block, the cable is positioned, the cable is prevented from being twisted to affect butt joint of the cable in the connecting process, the trapezoidal blocks are moved downwards and inserted into trapezoidal grooves, the annular clamping seat is locked, the annular clamping seat and one end of the cable are prevented from being telescopic and deviated in the shell, and the butt joint stability of the cable is improved.

The present invention relates to a power cable comprising a cable core comprising an electrical conductor and an electrically insulating layer surrounding the electrical conductor, and a water barrier sheath surrounding the cable core, wherein the water barrier sheath comprises a metal layer, wherein the metal layer comprises a metal alloy comprising zinc, or a zinc alloy.

The application discloses a kind of corrosion-resistant double-armored submarine cable and preparation method thereof, it is related to submarine cable technical field.The corrosion-resistant double-armored submarine cable includes outer sheath layer, water barrier layer, double-armored layer, insulating inner liner, filling layer, insulating layer, copper conductor in turn from surface to inside;The outer sheath layer is obtained by extruding coating on the surface of double-armored layer by corrosion-resistant submarine cable material;The corrosion-resistant submarine cable material includes the following raw material components: by mass parts, 75-90 parts of high-density polyethylene, 30-50 parts of ultra-high molecular weight polyethylene, 10-25 parts of modified microfiber, 8-15 parts of ethylene-vinyl acetate copolymer, 0.2-0.5 parts of antioxidant, 1-1.2 parts of lubricant.The application optimizes sheath layer material, solves the problems of existing double-armored submarine cable corrosion failure, short service life, unstable performance and other problems, meets the demand of long-term service reliability.

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.

A dynamic high-voltage submarine cable comprises at least one cable core comprising an electrical conductor and an electrically insulating layer (4) radially surrounding outside of the electrical conductor (3), and a water barrier radially surrounding outside of the cable core (2). The water barrier comprises a corrugated metal tube (10) having an inner diameter (20) larger than 90mm and a corrugation pitch (p) in a range of 4 - 12 mm, characterized in that the metal tube has a wall thickness (T) in a range of 0.1 - 1,2 mm and a corrugation depth (d) of more than 5 mm.

The application provides a kind of anti-pressure anti-torsion submarine cable, including center support, a plurality of conductor units, a plurality of edge gap supports, optical fiber units, signal transmission units and protective anti-torsion anti-pressure units.The conductor units are arranged around the periphery of the center support, and the edge gap supports are arranged between adjacent conductor units.The optical fiber units and the signal transmission units are respectively embedded in different edge gap supports.The protective anti-torsion anti-pressure units include, from outside to inside, a first protective layer, a first water-blocking layer, a first anti-tension anti-torsion armor layer, a second protective layer, a second anti-tension anti-torsion armor layer, a second water-blocking layer, and a third protective layer.The application realizes surface contact pressure resistance through the center support, realizes anti-torsion through the double armor layer of reverse cross-weaving, isolates electromagnetic interference and provides rigid protection through the independently embedded optical fiber and signal units, and solves the problem of insufficient anti-pressure, anti-torsion, optical and electrical interference, and water-blocking performance of the existing submarine cable by combining the multi-layer continuous water-blocking structure.

The utility model discloses a shielding type underwater cable in the technical field of cables, which comprises a cable body, a plurality of fixing assemblies are uniformly arranged on the outer wall of the cable body, the cable body comprises a pressure-resistant protective layer, the outer wall of the pressure-resistant protective layer is coated with a corrosion-resistant coating, and the inner wall of the pressure-resistant protective layer is provided with a protective filling layer. Through the arrangement of the compression-resistant protection layer and the strength supporting columns uniformly arranged between the compression-resistant protection layer and the protection filling layer, the overall compression-resistant performance of the cable is remarkably enhanced, and the cable can better cope with the challenge of an underwater high-water-pressure environment. And the outer wall of the compression-resistant protection layer is coated with the corrosion-resistant coating, so that direct contact between the cable and underwater corrosive substances is effectively isolated, and the service life of the cable is prolonged. And the flexible gap filling layer is filled between the compression-resistant protection layer and the protection filling layer, and the cable core is subjected to multi-layer protection through the shielding layer and the insulation protection sleeve, so that the stability and the safety in the cable are improved.

The invention relates to a photoelectric composite longitudinal watertight cable and a preparation method thereof. The cable sequentially comprises a conductor unit, an insulating layer, a water-blocking tensile element, an aluminum foil shielding layer and a double-layer co-extrusion sheath from inside to outside, wherein the conductor unit is formed by twisting silver-plated copper wires; the insulating layer is made of high-strength ethylene propylene diene monomer; the water-blocking tensile element is made of a tensile material and is of a net-shaped structure; the aluminum foil shielding layer is made of aluminum foil with the thickness of 0.02-0.05 mm; the inner layer of the double-layer co-extrusion sheath is ethylene propylene rubber, and the outer layer is chloroprene rubber. Through structural innovation and process optimization, the technical bottleneck that an existing underwater cable cannot give consideration to multi-signal composite transmission, deepwater pressure resistance, high interference resistance and long-term reliability at the same time is solved. The cable adopts a silver-plated conductor, high-strength insulation, precise shielding and a double-layer co-extrusion sheath, and can be used in full sea depth by cooperating with initiative processes such as water vapor balance vulcanization.

The hydrolysis corrosion-resistant underwater cable comprises a connecting sleeve, cable bodies are arranged on the two sides of the connecting sleeve, connecting grooves are formed in the outer walls of the opposite faces of the two cable bodies, matching grooves are formed in the inner walls of the two ends of the connecting sleeve, and sealing grooves are formed in the bottoms of the matching grooves. Opposite surfaces of the cable bodies are provided with sealing rings matched with the sealing grooves, the opposite surfaces of the cable bodies are matched with the connecting grooves relative to the matching grooves, a positioning mechanism for positioning connection of the matching grooves and the connecting grooves is arranged between the matching grooves and the connecting grooves, and a fixing mechanism for fixing the two cable bodies is arranged outside the connecting sleeve. According to the utility model, the annular shape formed by the plurality of arc-shaped plates and the penetrating plate is gradually reduced, so that the plurality of arc-shaped plates and the penetrating plate enter the positioning groove, thereby realizing quick connection of two cable bodies, and bringing certain convenience for people to connect the cable bodies.

The utility model discloses a 35kV power cable for offshore wind power generation, which comprises a conductor, a semi-conductive water-blocking wrapping tape is wrapped outside the conductor, a three-layer co-extrusion insulating layer is extruded outside the semi-conductive water-blocking wrapping tape, a semi-conductive water-blocking tape is overlapped and wrapped outside the three-layer co-extrusion insulating layer, and the semi-conductive water-blocking tape is wrapped outside the three-layer co-extrusion insulating layer. An alloy lead inner sheath and a polyethylene inner sheath are sequentially extruded outside the semi-conductive water-blocking tape to form wire cores, the wire cores are twisted to form a cable core, a water-blocking tape is lapped outside the cable core to tighten the cable core, a polypropylene fiber layer is lapped outside the water-blocking tape, an alloy lead outer sheath and a polyethylene inner cushion layer are extruded outside the polypropylene fiber layer, and the polyethylene inner cushion layer is extruded outside the alloy lead outer sheath and the polyethylene inner cushion layer. A galvanized steel wire armor layer is wound outside the polyethylene inner cushion layer, and an outer sheath is wrapped on the outermost layer. The cable provided by the utility model has excellent performances of corrosion resistance, tension resistance, pressure resistance, water resistance, water resistance and the like, and is mainly used in the fields of offshore wind power, offshore oil and gas exploitation, power transmission between land and islands and the like.

The invention relates to the technical field of submarine cables, and provides an umbilical cable and a punching method thereof. The umbilical cable comprises an inner sheath, an inner layer function unit group, an outer sheath, an outer layer function unit group and an armor layer. An inner layer function unit of the umbilical cable is arranged in an inner sheath, an outer layer function unit of the umbilical cable is arranged between the inner sheath and an outer sheath, an armor layer comprises an armor sheath and a metal armor, and the metal armor is arranged between the armor sheath and the outer sheath; the inner layer function unit group comprises a plurality of first steel pipe units which are uniformly distributed in the inner sheath along the circumferential direction, and second steel pipe units which are filled between the adjacent first steel pipe units. According to the umbilical cable provided by the invention, the first steel pipe unit and the second steel pipe unit can provide a plurality of gas or liquid transmission channels, and a stable supporting structure is formed in the inner layer of the umbilical cable.

The subsea power transmission cable 500 comprises at least one electrical conductor 501, said electrical conductor comprising a plurality of strands 502. The cable further comprises at least one condu

The invention provides a cable core which comprises a water-blocking conductor, an insulation shielding layer arranged outside the water-blocking conductor, a wrapping layer arranged outside the insulation shielding layer, a metal shielding layer arranged outside the wrapping layer and a semi-conductive sheath arranged outside the metal shielding layer. And the semi-conductive sheath is electrically connected with the metal shielding layer to realize equipotential. According to the cable core, the submarine cable and the semi-conductive sheath, the metal shielding layer is equipotential, the short-circuit current bearing capacity is greatly improved, the metal shielding layer is allowed to be thinned to reduce the cost, the induced voltage is reduced, electrochemical corrosion is fundamentally inhibited, and the long service life is guaranteed.

“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.”

The invention belongs to the technical field of cable manufacturing, and particularly relates to a sectional submarine cable and a manufacturing method thereof, and the method comprises the following steps: 1, carrying out the wire drawing and twisting of a metal material to form a conductor; 2, spraying or dipping a layer of insulating material on the surface of the conductor; step 3, assembling the conductor with the insulating material formed on the surface to form a cable core; 4, adding an armor layer and a protective sleeve on the cable core to form a cable prefabricated product; the additional device comprises rectangular plates and a connecting frame, the number of the rectangular plates is two, each rectangular plate is rotationally connected with two conveying wheels, a to-be-smeared cable penetrates through the multiple conveying wheels, the multiple conveying wheels rotate to convey the to-be-smeared cable, the connecting frame is fixedly connected with a sprinkling part, the connecting frame is rotationally connected with a driving gear, and the sprinkling part is fixedly connected with the driving gear. A smearing part is slidably connected to the connecting frame, a gear ring is fixedly connected to the smearing part, the gear ring is meshed with the driving gear, and the asphalt coating can be evenly smeared on the surface of the cable conveniently.

The utility model provides a data wire for radio and television, which comprises an outer sheath, a reinforcing sheath sleeved in the outer sheath, a cross-linked silicone rubber sheath sleeved in the reinforcing sheath, and a high-frequency data transmission twisted pair, a power distribution wire core and an air cooling pipe wrapped in the cross-linked silicone rubber sheath. The data wire for radio and television is applied to digital communication of civil radio and television, aerospace, offshore platforms and warfare ships and modern information communication of data link operation, and can provide a working power supply for electrical equipment while transmitting high-frequency data signals, video signals and monitoring signals; and reliable communication can be provided for users of high-flow high-definition high-frequency band special equipment in an extreme temperature environment.

The present invention relates to the technical field of submarine cables, and in particular to a submarine cable armoring steel wire anchoring device, comprising an anchoring disc base. A plurality of conical anchoring holes are formed in the outer ring of the anchoring disc base in an annular configuration; a conical clamp is slidably mounted in each conical anchoring hole; a cable armoring steel wire penetrates through the inner ring of the conical clamp; a lug plate is provided in the middle of the side of the anchoring disc base close to the large ends of the conical anchoring holes; a through hole is formed in the middle of the lug plate; a stud bolt is slidably mounted in the through hole of the lug plate; a U-shaped shackle is sleeved on the outer ring of the stud bolt; and locking nuts are threadedly mounted at both ends of the stud bolt. The gravity of a submarine cable is dispersed to multiple steel wires, and each steel wire is anchored, thereby improving the strength of anchoring of the submarine cable, reducing the probability that the submarine cable end anchoring position falls off, and greatly increasing the laying distance of the submarine cable.

The application discloses a light storage straight flexible cable with corrosion resistance and a protection structure thereof, and particularly relates to the technical field of light storage straight flexible technology, and comprises a photovoltaic power generation mechanism, wherein the photovoltaic power generation mechanism comprises an annular floating body pipe floating on the water surface, the inner ring of the annular floating body pipe is provided with a high-elasticity film, and the high-elasticity film is uniformly provided with a plurality of photovoltaic panels; the annular floating body pipe is concentrically provided with a mounting ring, the mounting ring is arranged in parallel with the annular floating body pipe, the mounting ring is provided with a protection mechanism, and the protection mechanism comprises a plurality of protection sleeves fixedly mounted on the mounting ring. The protection mechanism is arranged, so that when the high-elasticity film fluctuates up and down with waves, the cable between the photovoltaic panel and the mounting ring is limited to swing in a small range in the protection sleeve, and thus the deformation range of the cable is effectively reduced, and the service life of the cable is significantly prolonged.

A power cable system, comprising a power cable, and a cooling device thermally coupled to the power cable, wherein the cooling device comprises an enclosure, wherein a first region of the enclosure is configured to absorb heat from one part of the power cable, wherein a second region of the enclosure is configured to release heat to another part of the power cable, another object or the environment, and wherein the cooling device has a two-phase heat transfer mechanism inside the enclosure for conducting a heat transfer between the first region and the second region.

The utility model relates to a marine integrated pipe cable, which comprises a pipeline unit, the pipeline unit comprises a lining layer and a pressure bearing layer, a medium is in contact with the lining layer, and the pressure bearing layer is arranged on the periphery of the lining layer; the cable unit comprises an umbilical cable layer, an inner sheath layer, an armor layer and an outer sheath layer which are sequentially arranged from inside to outside, and the umbilical cable layer is coaxially arranged on the outer side of the pipeline unit; the umbilical cable layer comprises an optical cable, a cable and filler, the cable is used for supplying power, and the optical cable is used for monitoring the state of the pipeline unit; the optical cables are uniformly distributed on the umbilical cable layer at intervals. According to the utility model, the marine hose and the umbilical cable are integrated to construct the integrated pipe cable with a monitoring function, and the integrated pipe cable has the functions of marine oil and gas transmission and in-situ detection, can monitor the state of a pipeline in real time, and improves the structural strength and the overall performance of the integrated pipe cable; the marine oil and gas exploitation cost is reduced; infrastructure laying is reduced, and offshore oil and gas exploitation construction and operation cost is reduced.

The present invention relates to the technical field of subsea power cables. More specifically, the invention relates to a subsea power cable comprising at least one cable core, the cable core comprising a metal conductor, the metal conductor comprising at least one metal wire, wherein a section of the at least one metal wire along the longitudinal direction is surrounded with a material of low electrical conductivity.

The present invention relates to the technical field of subsea power cables. More specifically, the invention relates to a subsea power cable comprising at least one cable core, the cable core comprising a metal conductor, the metal conductor comprising at least one metal wire, wherein a section of the at least one metal wire along the longitudinal direction is surrounded with a material of low electrical conductivity.

The present invention relates to electrical power cables (1). More specifically, the present invention relates to a water barrier for surrounding a cable core of an electrical power cable (1), wherein the water barrier comprises a first layer of a lead-free metal sheath (4), and a second layer (5) for reinforcing the lead-free metal sheath (4), wherein the second layer surrounds the first layer. Further, the present invention relates to power cables (1) comprising an electrical conductor (2) and the water barrier according to the invention, wherein the water barrier surrounds the electrical conductor (2).