684results about "Submarine cables" patented technology

The invention provides a submarine cable with a large cross section and high heat dissipation performance. The submarine cable comprises an inner protection layer, a center assembly, a plurality of electric units, a plurality of power assemblies and a first heat dissipation assembly. An accommodating cavity is formed in the inner protective layer; the central component is positioned in the accommodating cavity; the plurality of electric units are located in the accommodating cavity, and the plurality of electric units are arranged around the central assembly; the multiple power assemblies are located in the containing cavity, the multiple power assemblies and the multiple electric units are correspondingly arranged, and the power assemblies are configured to enable the electric units to move towards or away from the inner protection layer; the first heat dissipation assembly is arranged around the periphery of the inner protection layer, and the first heat dissipation assembly is configured to dissipate heat of the electric units making contact with the inner protection layer through the inner protection layer.

The invention discloses a crosslinked polyethylene insulated submarine power cable, which relates to the technical field of submarine power cables, is used for carrying out power transmission in a deep seabed, and comprises a cable body, and the cable body sequentially comprises an insulated outer protective layer, a tensile layer, an anti-corrosion layer, a steel tape armoring layer and an insulating layer from outside to inside, the interior of the insulating layer is formed by mutually winding a plurality of groups of conductor insulating shielding layers, the interior of the conductor insulating layer is formed by mutually winding a plurality of groups of conductor shielding layers, and a conductor water-blocking layer is arranged between the conductor insulating shielding layers and the conductor shielding layers; the conductor shielding layer is composed of a first conductor, a semiconductor water-blocking tape and a second conductor in sequence from outside to inside, and the cable solves the problems that when the cable is used in the seabed for a long time, the cable sheath is damaged due to long-term seawater corrosion, high-pressure seawater is diffused in the longitudinal direction through gaps existing in the cable, the long-distance cable is damaged, and the service life of the cable is prolonged. Therefore, the problem that the power cable is damaged and cannot transmit power is solved.

A corrugated copper submarine cable and a submarine cable production device. The submarine cable production device comprises a worktable, and further comprises: a fixing compartment arranged in the middle of the upper surface of the worktable, wherein a fixing pipe penetrates the interior of the fixing compartment, a winding assembly is arranged on the circumferential surface of one end of the fixing pipe, and the winding assembly comprises a rotating ring rotatably arranged on the circumferential surface of the fixing pipe; and a welding compartment arranged on one side of the fixing compartment, wherein two support frames are arranged in the welding compartment, the top ends of the two support frames are both fixedly connected to limiting rings, a positioning ring is rotatably arranged between the two limiting rings, the inner wall of the positioning ring is fixedly connected to a plurality of arc welding heads, and the plurality of arc welding heads are distributed in a circumferential array along the inner wall of the positioning ring. By providing a welding assembly, the present invention solves the problem of reduced production efficiency of corrugated copper submarine cables caused by a relatively slow welding speed and low efficiency during normal welding in which welding is performed by a large number of technicians to generate corrugated textures.

Provided in the present application are a multi-core submarine cable and a manufacturing device therefor. The multi-core submarine cable comprises: power cables, the power cables each comprising electric units for electric conduction and an optical unit for communication; buffering and heat insulation structural units, wherein the buffering and heat insulation structural units each comprise a braided rope and a first protective sleeve, the first protective sleeve being extruded on the outer side of the braided rope; and auxiliary metal units, wherein the auxiliary metal units each comprise a metal pipe and a second protective sleeve, the second protective sleeve being extruded on the outer side of the metal pipe; the cross sections of the power cables and the buffering and heat insulation structural units are all circular; the diameters of the cross sections of the power cables are equal to the diameters of the cross sections of the buffering and heat insulation structural units; and the buffering and heat insulation structural units, the auxiliary metal units and at least two of the power cables are stranded to form cable cores of the multi-core submarine cable. The present application can improve the stability and reliability of the submarine cable and reduce the production cost of the submarine cable.

The invention belongs to the technical field of submarine cables, and provides a high-voltage three-core submarine cable. Comprising a cable core, a waterproof layer, an inner sheath, an armor layer and an outer sheath, the cable core comprises at least one conductive core, the conductive core comprises a conductor and an insulation system arranged outside the conductor, the insulation system comprises a conductor shielding layer, an insulation layer and an insulation shielding layer, and the conductivity of the conductor shielding layer is gradually reduced from inside to outside in the radial direction of the conductive core; the conductivity of the insulation shielding layer is gradually reduced from outside to inside in the radial direction of the conductive core. The contact interface of the conductor shielding layer and the insulating layer prevents charge from gathering at the interface, and the electric field distribution between the conductor shielding layer and the insulating shielding layer is greatly optimized; similarly, the electric conductivity of the insulation shielding layer is set to be gradually increased in the direction away from the insulation layer, the interface electric field between the insulation layer and the insulation shielding layer is optimized, electric charges on the interface of the insulation layer can be rapidly led to the insulation shielding layer, and the partial discharge phenomenon is prevented.

A submarine cable for ultra-deep water. The submarine cable comprises: a plurality of cable cores, a plurality of pre-formed filler strips and an outer protective structure, wherein the plurality of cable cores are tightly twisted together; the plurality of pre-formed filler strips are arranged in gaps between the plurality of cable cores; the outer protective structure is wrapped around the peripheries of the plurality of cable cores and the plurality of pre-formed filler strips. Each pre-formed filler strip is provided with a cavity, which extends in the direction of length of the pre-formed filler strip, and through holes, which are arranged at intervals in the direction of length of the pre-formed filler strip and penetrate into the cavity in a radial direction; and the outer protective structure is provided with flow holes. When a submarine cable for ultra-deep water is laid and placed into a deep sea, seawater can enter gaps between a plurality of cable cores and cavities of pre-formed filler strips by means of flow holes, which allows the air inside the submarine cable to be completely discharged, so that the pressure inside and outside the submarine cable keeps balanced, thereby avoiding an internal structure of the submarine cable being crushed, and thus prolonging the service life of the submarine cable.

This power cable monitoring system includes: a power cable including a power transmission cable provided at an inner circumferential part, an armoring wire provided at an outer circumferential part, and sensor ropes having an optical fiber to detect a physical quantity of a measurement target; and a backscattering light measurement device which measures distribution of the physical quantity of the measurement target, using backscattering light from the optical fiber, wherein distribution of temperature and strain of the power cable is obtained from a frequency shift signal of Rayleigh backscattering light obtained by the backscattering light measurement device on the basis of a signal detected by the sensor ropes, and a polarization distribution signal obtained from the Rayleigh backscattering light.

The invention discloses a single-core power cable and a single-core composite cable. The single-core power cable comprises a wire core, a conductor shielding layer, an insulating layer, an insulating shielding layer, a sheath layer, an armor layer and an outer coating layer from inside to outside in the radial direction, the armor layer is made of a carbon fiber composite material, and the carbon fiber composite material is prepared by taking a polymer as a matrix and carbon fibers as a reinforcing material. According to the invention, by using the carbon fiber composite material in the armor layer, not only can the problem of large metal armor loss be solved, but also the hysteresis phenomenon and the heating and temperature rise of the armor layer can be effectively avoided.

The utility model relates to the technical field of submarine cable production, and discloses a water-tree-resistant cross-linked polyethylene insulated optical fiber composite wet-type submarine cable, which comprises a main body mechanism and an auxiliary mechanism, the auxiliary mechanism is positioned on the inner side of the main body mechanism, and the main body mechanism comprises a water-blocking conductor, a conductor shield and an insulating layer. According to the water-tree-resistant cross-linked polyethylene insulated optical fiber composite wet-type submarine cable and the production equipment, through installation of a main body mechanism, the elongation of copper monofilaments is controlled to be 30-35%, the resistivity is smaller than or equal to 0.017241 omega.mm / m, a layer of semi-conductive seawater-resistant water-blocking tape is longitudinally wrapped between every two layers of conductors, a layer of water-blocking yarn is bound outside the water-blocking tape, and the water-tree-resistant cross-linked polyethylene insulated optical fiber composite wet-type submarine cable is formed. The outer layer of the stranded conductor is wrapped by a layer of reverse semi-conductive water-blocking binding tape and a layer of semi-conductive tetoron tape, the water-blocking layer of the semi-conductive water-blocking binding tape faces the conductor, the overlapping positions of the two layers of semi-conductive tapes are not overlapped at the same position, the semi-conductive tapes are required to be flatly wrapped and uniformly overlapped, the overlapping rate is controlled to be 20-35%, and the insulating layer is made of an XLPE insulating material and has the thickness of 24.0 mm.

A submarine cable core comprising a conductor which is surrounded by at least an inner semiconductive layer, an insulation layer and an outer semiconductive layer in that order; wherein said insulation layer comprises: a low density polyethylene homopolymer or low density polyethylene copolymer with at least one polyunsaturated comonomer and optionally one or more further comonomers; and, a copolymer comprising at least one polar comonomer selected from the group consisting of an alkyl acrylate, an alkyl methacrylate or vinyl acetate, wherein the amount of polar monomer units in the insulation layer is from 1 to 150 micromol per gram based on the total amount of polymer components in the insulation layer.

The invention relates to a cross-linked polyethylene insulation material and a preparation method and application thereof, and the cross-linked polyethylene insulation material comprises the following raw materials: low density polyethylene, an antioxidant, a cross-linking agent, a first scorch retarder and a second scorch retarder, the first anti-scorching agent comprises one or more of an olefin anti-scorching agent, an allyl substituted phenol anti-scorching agent and a thiocarbonate anti-scorching agent, the second anti-scorching agent comprises a free radical terminator, low-density polyethylene, an antioxidant and a cross-linking agent, and the first anti-scorching agent and the second anti-scorching agent are matched for use. The scorching phenomenon of the cross-linked polyethylene insulation material in the processing process and the using process can be reduced, the scorching resistance of the cross-linked polyethylene insulation material is improved, and the service life of the cable is prolonged.

The present invention discloses a medium-voltage longitudinal water-blocking cable with a large cross-section and a preparation method thereof. The cable includes a conductor, a conductor shield, an insulation layer, a non-metallic insulation shield, a metal shielding layer, an inner sheath, and an outer sheath from the inside to the outside. The conductor is a multi-layer tightly compressed stranded wire conductor, and a water-blocking tape is filled and wrapped between each layer of the stranded wire conductor; the materials of the inner sheath and the outer sheath are both high-density polyethylene. The structure of the present invention is more compact, simple, and lightweight, thus solving the longitudinal water-blocking requirement of the stranded conductor, while having good anti-overload and large short-circuit current withstand capabilities, and being conducive to the vulcanization and sealing connection of matching connectors or joints.

A dynamic and static combined submarine cable disclosed by the present invention comprises a dynamic cable and a static cable, the dynamic cable comprises a dynamic cable core, a dynamic filling steel strand and a dynamic armor layer, the static cable comprises a static cable core, a static filling strip and a static armor layer, the dynamic cable core is correspondingly connected with the static cable core, the dynamic filling steel strand is correspondingly connected with the static filling strip, and the static filling strip is correspondingly connected with the static armor layer. The dynamic armor layer is correspondingly connected with the static armor layer; the invention further discloses a forming method of the dynamic and static combined submarine cable, the dynamic cable and the static cable are formed, the steel strands are inserted into the filling strip connecting holes, the conductor core wires are welded, the dynamic steel strand PE sheaths are formed, the common filling strips are welded, the dynamic armored steel wires and the static armored steel wires which are opposite to each other are fixed, and the dynamic armored steel wires and the PE wires which are opposite to each other are fixed. And forming the outer sheath. According to the dynamic and static combined submarine cable and the forming method thereof, the dynamic cable and the static cable are independently formed and then assembled.

The invention provides a submarine cable capable of preventing submarine organisms from being damaged. The submarine cable comprises a cable main body and a repelling device, the repelling device comprises an outer armor layer and an outer sheath layer; the outer armor layer comprises a plurality of first armor wires and second armor wires which wrap the cable main body, and the first armor wires and the second armor wires are alternately arranged; a plurality of repelling mechanisms and a plurality of supporting sleeves are sleeved outside the second armored wire, and the repelling mechanisms and the supporting sleeves are alternately arranged; each repelling mechanism comprises an inner sleeve, a water absorbing material, an outer sleeve and a plugging plate; the inner sleeve is sleeved outside the second armored wire; the outer sleeve is sleeved outside the inner sleeve; the water absorbing material is filled between the inner sleeve and the outer sleeve and adsorbs repellent liquid; and the plugging plate is used for plugging two sides between the inner sleeve and the outer sleeve. When the outer sleeve of the repelling device is bitten by benthos, the water absorbing material in the outer sleeve is extruded to release the repelling liquid, so that the benthos are repelled, the cable main body is protected from being damaged, and normal use of the submarine cable is ensured.

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 present disclosure relates to a cable having reduced loss. Specifically, the present invention relates to a cable having reduced loss that is capable of minimizing the limitation of rated current due to heating of an outer armor and the resultant transmission loss while reducing manufacturing costs and minimizing an outer diameter and weight of the cable.

The invention discloses a mechanical connection technology of deep sea communication equipment, and aims to provide a load-bearing hinge for a flat cable and a manufacturing method thereof, and the key points of the technical scheme are that the load-bearing hinge comprises a hinge main body which is formed by fixing two stainless steel 316L metal plates through screws and ensures the strength and corrosion resistance of the structure; the hinge interface is arranged at the front end of the hinge main body, plays a role in bearing, is used for being connected with underwater communication equipment and ensuring the stability and the reliability of connection, and can be stably rotated and fixed in the use process; the connecting piece is fixed between the underwater communication equipment interface and the hinge interface to form a rotatable joint structure, so that the hinge can freely rotate within a certain range to meet operation requirements in different working environments; the glue pouring sleeve is arranged in the middle of the hinge main body and is used for pouring and sealing an aramid rope for bearing a cable into the cavity through the force bearing glue; a bearing block; a vulcanization bag; the invention is suitable for the technical field of mechanical connection of deep sea communication equipment.

The invention discloses a 220kV submarine cable capable of preventing seawater corrosion, and relates to the technical field of cables, the outer side of an insulation isolation layer is provided with an outer protection support assembly, the outer side of the insulation isolation layer is wrapped with an armor layer, the outer side of an expansion layer is uniformly provided with mark grooves, the outer side of an insulation anti-corrosion layer is embedded with a spiral support ring, and a positioning ring is fixedly sleeved in a fixing groove. According to the cable, when the cable moves, the annular buffer net bulges and rolls, is more elastic and has better impact absorption capacity, the damage of the insulating anti-corrosion layer is further avoided, the expansion layer is further prevented from absorbing water and expanding, and the cable is prevented from being damaged. The damaged position is extruded, the speed of seawater permeating into the cable is reduced, the foam plastic strip and the driving ball diffuse and flow out along the damaged position, and the damaged area can be marked after the submarine cable is damaged, so that maintenance personnel can quickly determine the damaged position for repairing.

The invention relates to the technical field of underwater cable manufacturing and detection, in particular to an alternating-current underwater power cable and a cable water blocking performance detection method, and the alternating-current underwater power cable comprises a conductor, an insulating layer wrapping the conductor and a sheath wrapping the insulating layer. The conductor is formed by twisting a plurality of copper wires, and the copper wires are coated with PJ water-swelling water-blocking glue. The waterproof cable has the effect of enhancing the waterproof performance of the cable.

The utility model discloses a large-length AC optical fiber composite submarine cable, which is of a composite structure and comprises power wire cores, an optical transmission unit, a pressure-bearing protection filling and an outer layer protection structure, one side, close to the outer layer protection structure, of the pressure-bearing protection filling is provided with a wire groove, and the power wire cores are arranged at the center of the cable in an annular array mode. Pressure-bearing protection fillers are filled in gaps between the adjacent power wire cores and the outer side of the outer-layer protection structure, the optical transmission units are arranged in wire grooves of the pressure-bearing protection fillers, each power wire core is composed of a plurality of power wire core sections and a factory flexible joint, and the factory flexible joint is arranged between every two adjacent power wire core sections. According to the utility model, the factory flexible joint is adopted to connect the two different power wire core sections, and the power wire core part can be infinitely extended theoretically, so that compared with the prior art, the optical fiber integrity is better, and compared with the conventional segmented laying scheme, the waterproof performance is better, and the working safety is better.

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.

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 utility model belongs to the technical field of cables, and particularly relates to a dynamic composite cable for deep sea operation of a diving robot. The cable comprises a central filling member, a composite cable core and a protective layer which are arranged from inside to outside. The composite cable core is arranged on the outer side of the center filling piece and comprises a plurality of power cable cores, auxiliary cable cores and winding wires which are sequentially arranged from inside to outside, the power cable cores are arranged around the center filling piece in the circumferential direction, and gaps between the power cable cores and the protective layer are filled with the auxiliary cable cores in the circumferential direction at intervals; gaps among the power cable core, the auxiliary cable core and the protective layer are filled with winding wires in the circumferential direction at intervals, and the outer side of the winding wires is coated with a semi-conductive layer; the protective layer comprises an armored shielding layer in contact with the semi-conductive layer and an outer sheath layer arranged on the outer side of the armored shielding layer. The utility model is used for solving the problem that the existing umbilical cable is poor in tensile and compression resistance.

Systems and methods are disclosed herein for identifying cable damage using machine vision, such as on a cable being fed down a wellbore from a cable spool in an oil and gas operation. An example method can include providing a camera directed toward a cable that is winding upon, or unwinding from. a cable spool. The method can also include capturing a plurality of frames of images of the cable by the camera. such as by capturing video. The captured frames can be cropped to remove portions of the frames that do not include the cable. The method can further include processing the cropped frames using a machine-learning model. The machine-learning model can be trained using images of known cable damage as inputs so it can identify new instances of damage. The machine-learning model can further classify each cropped frame as including damage or not including damage.

The invention provides a zero-gravity submarine cable suitable for a wave energy power generation device, comprising a cable protective layer, a core wire, a buoyancy bag, a damage detection mechanism and a main console. The damage detection mechanism comprises a first metal contact, a second metal contact, an electromagnet and a metal rod. After the buoyancy bag is arranged on the outer surface of the cable protective layer, the cable can float in the seawater under the buoyancy of the buoyancy bag to prevent it from sinking to the seabed and being damaged by friction with seabed sand and gravel. When one of the buoyancy bags is damaged, seawater enters the buoyancy bag to establish an electrical connection between the first metal contact and the second metal contact. The electromagnet becomes magnetic after obtaining the electric energy transmitted by the core wire and attracts the metal rod to move. During the movement of the metal rod, a trigger button is triggered, and the trigger button sends an electrical signal to the main console, so that the main console can locate the position of the damaged buoyancy bag according to the received electrical signal, which is convenient for staff to perform repair and maintenance.

The utility model discloses a highly waterproof torsion-resistant dynamic submarine cable comprising an internal cable core and an external sheath layer, and the cable core comprises at least one power cable; when there are a plurality of power cables, the plurality of power cables are twisted into a cable core. The power cable sequentially comprises a water-blocking conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, a first water-blocking layer, a metal shielding layer, a second water-blocking layer and a split-phase sheath from inside to outside. The sheath layer sequentially comprises an inner sheath, a metal armor layer and an outer sheath from inside to outside; a temperature measuring optical fiber and a filling rope are arranged in a gap between the power cable and the sheath layer; the insulating layer is made of 90-DEG C cold-resistant flexible polyvinyl chloride; the cable is provided with the temperature measurement optical fiber, can monitor the temperature of the whole cable at any time, can quickly position a fault when the cable is damaged, and reduces the repair time. The insulating layer is made of 90-DEG C cold-resistant flexible polyvinyl chloride insulating material, and the insulating material has excellent electrical performance, cold resistance, heat resistance, chemical corrosion resistance, mechanical performance and high water resistance.

Method of manufacturing a power cable comprising three cores and three filler profiles arranged in a stranded configuration, the method comprising: A) in a design stage of the power cable: A0) defining a nominal outer diameter of the cores, and defining a stranding pitch P of the cores, A1) determining, in a transverse plane of the power cable, a shape of at least one of the cores, A2) determining a cross-sectional shape of the filler profiles in a transverse section of a filler profile based on the shape determined in step A1), B) in the production stage of the power cable: B1) manufacturing each of the cores with the nominal outer diameter, B2) obtaining the filler profiles with the cross-sectional shape obtained in step A2), and B3) stranding the cores and the filler profiles with the stranding pitch P in an assembly machine.

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 submarine cables, in particular to a high-performance wet-type dynamic submarine cable which comprises a conductor, and a filling strip, a cabling wrapping tape, an inner sheath, an armor and an outer sheath are sequentially arranged on the outer side of the conductor from inside to outside. According to the high-performance wet-type dynamic submarine cable, the compressed circular copper oxide water-blocking conductor is adopted, the insulating layer is arranged on the surface of the copper conductor, the skin effect of the conductor is reduced, and the current-carrying capacity can be improved; the armoring is a double-layer reverse armoring, an inner layer bonding and outer layer non-bonding structure is adopted, through reverse twisting, torsion generated in the twisting process of the cable is effectively counteracted, so that the knotting and fracture risks caused by torsion in the laying and using processes of the cable are remarkably reduced, the anti-pressure capability and the dynamic flexibility are balanced through the layered design, and the service life of the cable is prolonged. The sliding frequency and the abrasion risk of outer-layer steel wires are reduced.

The present invention relates to the technical field of magnetic attraction lines, and in particular, to a magnetic attraction line convenient to store, including a line body and a connector, where line cores are connected into the line body, outer surfaces of the line cores are covered with an injection molding layer, an outer surface of the injection molding layer is coated with a magnetic attraction layer, an outer surface of the magnetic attraction layer is coated with a protection layer, and an isolation and protection layer is disposed between the magnetic attraction layer and the injection molding layer. Through a coating connection between the magnetic attraction layer and the injection molding layer, and under the action of the magnetic attraction layer, a magnetic attraction connection effect of the line bodies is achieved, and then a magnetic storage effect of the line bodies is achieved.