662 results about "Copper conductor" patented technology

The invention discloses a high-temperature-resistant composite insulated cable for an intelligent power grid, and belongs to the technical field of cables. The objective of the invention is to solve the problems of single function, poor high-temperature resistance and easy overload failure of the existing cable. The cable sequentially comprises a compressed circular tinned copper conductor, an inner shielding layer, an XLPE inner insulating layer, an outer shielding layer, a self-repairing composite insulating layer, a metal shielding layer and an outer sheath layer from inside to outside, the self-repairing composite insulating layer is prepared by blending a self-repairing polymer matrix and a microencapsulation phase change material, and the melting point of the microencapsulation phase change material is accurately matched with the double dynamic bond response temperature of the self-repairing matrix. Through cooperation of self-repairing and thermal buffering functions, integration of multiple functions of high temperature resistance, self-repairing and thermal buffering is achieved, the long-term working temperature reaches 105 DEG C or above, no breakdown occurs during thermal shock at 180 DEG C, the overload repairing rate exceeds 80%, the high-temperature and overload working conditions of an intelligent power grid can be effectively adapted, the preparation steps are clear and reproducible, and remarkable technical advantages and application value are achieved.

The invention discloses a transformer coil winding device which comprises a winding machine body, a knocking device, a pressing device and an auxiliary rod, and an iron core is arranged on the winding machine body; the flat copper conductor penetrates through the winding machine body and is wound on the iron core; the knocking device is arranged on the winding machine body; the pressing device comprises a rotating shaft, an elastic pressing structure, a first spring and a driving structure, and the rotating shaft is arranged on the winding machine body and connected with the driving structure; the elastic pressing structure is arranged on the rotating shaft in a sliding manner; the two first springs are arranged on the two sides of the elastic pressing structure correspondingly. The auxiliary rod is arranged above the pressing device, limiting switches are arranged at the two ends of the auxiliary rod respectively, and the pressing structure makes contact with the limiting switches when moving. According to the application, the flat copper wires are knocked through the knocking device, so that the flat copper wires are more attached to the surface of the iron core, the flat copper wires can be dynamically pressed through the pressing device, the flat copper wires wound on the iron core are tighter, and the electrical performance is improved.

The invention relates to the technical field of power equipment, and discloses a wind power generation torsion-resistant flexible cable, which comprises a cold-resistant torsion-resistant outer covering sleeve body, an ethylene propylene rubber insulating layer sleeve body is arranged in the cold-resistant torsion-resistant outer covering sleeve body, a torsion-resistant reinforced layer sleeve is arranged in the ethylene propylene rubber insulating layer sleeve body, and the torsion-resistant reinforced layer sleeve comprises a copper conductor core body group. A reinforcing core body group is arranged in the copper conductor core body group; the cold-resistant torsion-resistant outer covering sleeve body comprises a polyurethane elastomer sheath and an aramid fiber embedded sleeve, and the aramid fiber embedded sleeve is embedded in the inner wall of the polyurethane elastomer sheath and wraps the ethylene propylene rubber insulating layer sleeve body. The torsion-resistant quality of the guide core wire structure, the insulation sleeve structure and the cold-resistant outer sleeve structure is reinforced, and the torsion-resistant quality of the outer cold-resistant outer sleeve structure with the largest bearing stress during bending is greatly improved, so that the torsion-resistant and tensile quality of the whole cable is improved, and the cold-proof and wear-resistant protection effects of the outer sleeve structure are guaranteed.

The invention relates to a composite cable, and relates to the technical field of cables, the composite cable comprises a conductor layer, a composite insulating layer, a waterproof layer, a weather-proof sheath layer and an armor layer from inside to outside in sequence, the conductor layer comprises at least six tinned copper conductors, the tinned copper conductors are symmetrically arranged in a regular hexagon shape, dielectric elastomers are filled among the conductors, and the dielectric elastomers are arranged between the tinned copper conductors. The composite insulating layer comprises an inner shielding layer, a main insulating layer and an outer shielding layer from inside to outside, the waterproof layer is a fluororubber extruded layer, the weather-proof sheath layer comprises a bonding transition layer and a weather-proof functional layer, and the armor layer is of a stainless steel band spiral wrapping structure. The composite cable can meet the requirement for high performance in a harsh environment and can show excellent performance under the extreme conditions of low voltage, large day and night temperature difference, strong ultraviolet rays, sand and dust abrasion, acid rain corrosion and the like.

The invention provides a corrosion-resistant composite cable and a preparation method thereof, the corrosion-resistant composite cable comprises a signal unit, an optical cable unit and a protection unit, the signal unit and the optical cable unit are coated with the protection unit, the signal unit comprises a silver-plated copper conductor, an insulating layer, a shielding layer and a sheath layer, and the silver-plated copper conductor is coated with the insulating layer. The optical cable unit comprises an optical fiber, a buffer tube and a filler; the protection unit comprises an inner sheath, a tensile layer, an anti-corrosion layer and an outer sheath. The corrosion-resistant composite cable has good corrosion resistance, can effectively resist corrosion of various chemical substances, prolongs the service life of the cable, reduces the fault risk caused by corrosion, and improves the stability and reliability of power transmission or signal transmission; under severe environment conditions, such as high humidity, high salinity and high alkalinity, a normal working state can still be kept, continuous and stable support is provided for related equipment or systems, and normal operation of the equipment or systems is guaranteed.

The invention relates to composition and preparation of a thick-film copper conductor sintered at different temperatures and different atmospheres, and belongs to the field of chemical preparation. Comprising the following steps: mixing 65-85% of copper powder, 3.0%-15.0% of glass, 15.0%-35.0% of an organic adhesive and 0.1-1.5% of an additive which is one or more of titanium trioxide or stannous oxide, cuprous oxide and copper oxide, rolling into slurry, and sintering at 850-950 DEG C under the protection of nitrogen or ammonia gas to obtain a copper conductor. The medium-temperature copper paste is prepared by the following steps: mixing 60.0-85.0% of copper powder, 3.0-13.0% of glass, 8.0-25.0% of an organic adhesive and 0.2-1.6% of an additive which is one or more of titanium sesquioxide or stannous oxide, cuprous oxide and copper oxide, rolling into paste, and sintering at 450-650 DEG C under the protection of nitrogen or ammonia gas to obtain a copper conductor. The low-temperature copper paste is prepared by mixing 60.0-85.0% of copper powder, 3.0-13.0% of glass, 8.0-25.0% of an organic binder and 0.1-2.0% of an additive which can be one or more of elemental elements of magnesium, zinc, boron and phosphorus or one or more of nickel phosphide, nickel boride, copper phosphide and copper oxide, rolling the mixture into paste, and sintering the paste in air at 250-350 DEG C to obtain a copper conductor.

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 cable processing, and discloses a mica tape cross-linked polyethylene insulated cable which comprises a copper conductor, a mica tape, a cross-linked polyethylene insulating layer, a filling material, a wrapping layer and a cable sheath from inside to outside, the mica tape comprises mica paper, a reinforcing material and an adhesive, and the adhesive comprises tung maleic anhydride type mica glue and MgO / gamma-Al2O3 composite filler. The adhesive adopted by the mica tape comprises the MgO / gamma-Al2O3 composite filler and the tung maleic anhydride type mica glue, and the MgO / gamma-Al2O3 composite filler can improve the heat conductivity coefficient and the dielectric property of the tung maleic anhydride type mica glue, so that the heat conductivity and the insulativity of the mica tape are improved.

The invention relates to the field of fireproof cables, and discloses a composite mica copper sheathed high-performance fireproof cable for high-speed railways. The composite mica copper sheathed high-performance fireproof cable comprises a plurality of insulating cores, an inorganic tape, a copper sheath, and a sheath layer which are sequentially arranged from the inside to the outside, wherein the insulating core comprises a copper conductor and a mica tape insulation layer wrapped around the surface of the copper conductor, and a mineral material is filled between the mica tape insulation layer and the inorganic tape; the sheath layer is prepared by pulling out a sheath layer material from the outer periphery of the copper sheath through an extrusion device; the sheath layer material comprises the following raw materials in parts by weight: 70 to 90 parts of low-density polyethylene, 10 to 15 parts of ethylene-tetrafluoroethylene copolymer, 5 to 10 parts of modified composite fillers, 2 to 5 parts of flame retardant additives, 3 to 4 parts of diisopropylbenzene peroxide, 2 to 2.5 parts of triallyl isocyanurate, 1 to 2 parts of a plasticizer, and 0.1 to 0.3 parts of a lubricant. The invention imparts excellent heat-oxidation aging resistance, flame retardancy, and heat resistance to the cable sheath layer material through the addition of the modified composite filler and the flame retardant additive.

A novel 5KV airport navigational light fireproof cable comprises a copper conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, a copper strip shielding layer, a silica gel strip layer, an aluminum protection layer, a fireproof layer and a combustion-supporting sheath which are sequentially arranged from inside to outside. The fireproof and flame-retardant performance of the cable is higher than the existing standard.

The invention relates to the technical field of cables, and provides an acid and alkali corrosion resistant, rat-proof and ant-proof control cable which comprises eight cable cores, the surfaces of the eight cable cores are wound by polyester tapes to form a wrapping polyester tape layer, the wrapping polyester tape layer is coated with a copper wire braid layer, and the outer surface of the copper wire braid layer is coated with a sheath layer. The cable core comprises a copper conductor and an insulating layer wrapping the surface of the copper conductor. The sheath layer is prepared from the following raw material components in parts by weight: 45-75 parts of polyvinyl chloride resin, 8-18 parts of ethylene propylene diene monomer, 10-18 parts of a filling agent, 6-12 parts of a plasticizer, 20-30 parts of a flame retardant, 4-8 parts of a stabilizer, 2-4 parts of an anti-aging agent, 1-3 parts of a cross-linking agent and 3-5 parts of a rat-proof and ant-proof agent; the polyvinyl chloride resin comprises polyvinyl chloride resin QS-800F and polyvinyl chloride resin QS-1000F. According to the technical scheme, the problem of poor acid and alkali corrosion resistance of the sheath layer material of the rat-proof and termite-proof control cable in the prior art is solved.

The utility model discloses a steel core copper conductor stainless steel wire armored combination cable for a buggy ladle, which comprises three power wire cores and a control wire core, the three power wire cores and the control wire core are uniformly distributed at intervals of 90 degrees in the circumferential direction through an X-shaped polyurethane elastomer isolation core, a central hole is formed in the central part of the X-shaped polyurethane elastomer isolation core, and a galvanized steel wire reinforced core is sleeved in the central hole; and a polyether polyurethane inner sheath layer, a Kevlar fiber inner braid layer, a stainless steel wire armor layer, a Kevlar fiber outer braid layer and a polyether polyurethane outer sheath layer are sequentially coated outside the X-shaped polyurethane elastomer isolation core. The cable is better in flexibility and structural stability, the sheath is prevented from wrinkling, the cable is prevented from being twisted and deformed, the durability and the applicability are improved, and potential safety hazards are reduced.

The corrosion-resistant high-temperature-resistant anti-interference sensor cable comprises a conductor layer, an insulating layer, a shielding layer and an outer sheath layer which are sequentially arranged from inside to outside, the conductor layer is a copper conductor of which the surface is coated with a nano-plating layer, the insulating layer is of a multi-layer insulating structure formed by wrapping PTFE film strips, the lap joint rate of each layer of PTFE film strip is 30-50%, and the lap joint rate of each layer of PTFE film strip is 30-50%. The shielding layer comprises a double-shielding structure formed by longitudinally wrapping a graphene shielding tape and a copper wire braid layer, and the outer sheath layer is a modified TPU elastomer. The invention further discloses a production method of the corrosion-resistant, high-temperature-resistant and anti-interference sensor cable. According to the corrosion-resistant, high-temperature-resistant and anti-interference sensor cable and the production method thereof provided by the invention, the material and the process of the sensor cable are improved, so that the comprehensive upgrading of the cable in the aspects of high temperature resistance, corrosion resistance, signal stability and the like is realized, and the normal use of the sensor cable in a smelting plant is met.

The invention discloses a preparation method of a silicone rubber cable for an explosion-proof motor, and belongs to the technical field of cables. Wrapping the copper conductor with an inner insulating layer to obtain an insulating wire core; mutually twisting the insulated wire cores to obtain a cable core; the cable core is coated with an outer insulating layer; winding the non-woven fabric outside the insulating layer and filling the filler between the non-woven fabric and the insulating layer; coating the outermost layer with a protective sleeve by adopting an extrusion process; and finally, wrapping the glass fiber tape with a protective sleeve, and weaving a layer of galvanized wires outside the glass fiber tape to obtain the silicone rubber cable. The flame retardant containing nitrogen, phosphorus and fluorine has chemical action with the carbon black and the methyl vinyl silicone rubber, and the three components form a hybrid cross-linked network structure, so that the carbon black and the flame retardant can fully and stably play roles, and the protective jacket is endowed with excellent and stable flame-retardant effect, anti-aging effect, hydrophobic effect and mechanical and physical properties. The protective sleeve and other components of the cable act together, so that the cable is excellent in comprehensive performance and can be used as a cable for an explosion-proof motor.

The invention discloses a-52 DEG C cold-resistant environment-friendly cable, relates to the technical field of cables, and solves the problem that a cold-resistant environment-friendly cable in the prior art is easy to crack and crack in a low-temperature environment. Comprising a wire core structure, the nylon sheath wire core structure comprises a plurality of conductors distributed in an array, an insulating layer wrapping each conductor and a metal shielding layer wrapping each insulating layer, and each nylon sheath conductor is a tinned copper conductor; the nylon sheath metal shielding layer comprises an inner metal layer and an outer metal layer, the nylon sheath inner metal layer is arranged outside the insulating layer, and the nylon sheath outer metal layer is arranged outside the inner metal layer; the cable also comprises an outer sheath which wraps the cable core structure, and the nylon sheath is made of a thermoplastic elastomer. According to the cable scheme, on one hand, the flexibility, the mechanical strength and the environmental protection performance of the cable can be improved while a low-temperature environment is considered, and on the other hand, the influence of low temperature on data transmission of the cable can be effectively avoided.

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 invention relates to the technical field of special cable manufacturing, in particular to a corrosion-resistant power cable and a preparation method thereof.The corrosion-resistant power cable is composed of a copper conductor, a conductor shielding layer, a crosslinked polyethylene insulating layer, an insulating shielding layer, a metal shielding layer, a lining layer, an armor layer and an outer sheath; the surface of the copper conductor is plated with a nickel-phosphorus alloy, and the outer sheath contains low-density polyethylene, an ethylene-vinyl acetate copolymer, nano zinc oxide, a rare earth cerium compound and a silane coupling agent; the insulating layer is prepared through silane crosslinking, the armor layer is a galvanized steel strip or a steel wire, the metal shielding layer is wrapped by a copper strip or a copper wire, and the lining layer is made of polyethylene or a halogen-free material. The outer sheath is high in corrosion resistance, the conductors are resistant to oxidation, the insulation eccentricity is low, the stability is improved through the shielding and armoring structure, the insulation performance is optimized through the cross-linking technology, the preparation technology is suitable for industrial production, the qualified rate of finished products is high, and cost is low.

The invention discloses a cable for power transmission, which relates to the technical field of cable manufacturing and structurally comprises a cable core assembly, an inner insulating layer, a shielding layer, an outer insulating layer and an outer protective layer from inside to outside in sequence. In the cable core assembly, a core wire sleeve is arranged outside a conductive core wire, and a copper conductor is wound in a spiral twisting groove outside the sleeve; a spiral supporting framework and an elastic buffer layer are arranged outside the inner insulating layer; reinforcing fiber bundles are arranged in the shielding layer; and the outer insulating layer and the outer protective layer are protected layer by layer. The cable realizes performance optimization by virtue of a unique structure and a unique material: electrical conduction stability and electromagnetic shielding are ensured; physically, the material has compression resistance, tensile resistance, wear resistance and impact resistance; through the heat dissipation and protection design, the device can stably operate in a complex environment, improves the power transmission reliability, reduces the maintenance cost, and is suitable for various power transmission scenes.

The utility model relates to a high temperature and high pressure resistant submersible cable. According to the technical scheme, a sintered polyimide film inner insulating layer is wrapped outside a copper conductor, a modified high-temperature-resistant fluoroplastic outer insulating layer is extruded outside the polyimide film inner insulating layer, an inorganic heat-insulating cushion layer is wrapped outside the modified high-temperature-resistant fluoroplastic outer insulating layer, a nickel-based alloy steel pipe packaging sheath layer is wrapped outside the inorganic heat-insulating layer, and the nickel-based alloy steel pipe packaging sheath layer is wrapped outside the nickel-based alloy steel pipe packaging sheath layer. And the nickel-based alloy steel strip armoring layer is armoured outside the nickel-based alloy steel pipe packaging sheath layer. The beneficial effects of the utility model are that the cable employs modified ECA fluoroplastic resin and can continuously work at a static high temperature of 350 DEG C, the monel nickel-based alloy steel belt is employed to perform Z-shaped corrugated profiling and wrapping and armoring in an interlocking manner, the formed nickel-based alloy steel belt armoring layer can resist high pressure of more than 40 Mpa, and the cable can be used as a high-voltage cable. The electric energy supply of the submersible unit in the high-temperature, high-pressure and high-corrosion underground environment is fully guaranteed, and the oil extraction efficiency is greatly improved.

The invention relates to the technical field of cables, and discloses a high-temperature-resistant bending-resistant medium-voltage cable. The medium-voltage cable sequentially comprises a cable core, an isolation sleeve layer, a metal armor layer and an outer protection layer from inside to outside. The cable core is formed by twisting a plurality of insulated wire cores; each insulating wire core comprises a copper conductor, and a conductor shielding layer, an insulating layer and an insulating shielding layer which coat the outer side of the copper conductor; the cable has excellent high-temperature resistance and bending resistance, and the outer sheath is prepared by taking linear low-density polyethylene, polypropylene and modified linear low-density polyethylene as main raw materials and adding functional aids such as a composite flame retardant and a compatilizer; and the modified linear low density polyethylene is introduced into the outer protective layer, so that the high temperature resistance of the outer protective layer is improved while the excellent bending resistance and flexibility of the polyethylene are retained, and the medium-voltage cable can be used in a high-temperature environment.

The invention discloses a fusion device magnet coil copper conductor nondestructive testing method and a computer product, and relates to the technical field of nondestructive testing, the method comprises the following steps: obtaining original eddy current testing signals of a to-be-tested object or a plurality of areas of the to-be-tested object under specific physical conditions; preprocessing the original eddy current detection signal, wherein the preprocessing comprises denoising and signal correction; extracting features from the preprocessed signals and carrying out normalization processing; on the basis of a pre-established multi-parameter model related to the physical conditions of the to-be-tested object, theoretical signals of the to-be-tested object under various physical conditions are predicted through finite element simulation; and performing matching estimation on the normalized signal and a theoretical signal to obtain an estimated signal, and evaluating the defect existence probability based on the estimated signal. Based on an eddy current testing technology, a probe scans a sample and obtains a signal, and a finite element analysis method is combined to simulate and evaluate defects such as cracks possibly existing in a material.

The invention belongs to the technical field of beam stranding machines, and particularly relates to a copper conductor beam stranding machine which comprises a workbench, a first supporting plate is fixedly connected to the right side of the upper end face of the workbench, a first rotating disc is rotatably arranged on the upper side of the left end face of the first supporting plate, and first clamping plates are slidably connected to the two sides of the left end face of the first rotating disc. A second rotating disc is rotationally arranged on the right end face of the connecting plate, second clamping plates are slidably connected to the two sides of the right end face of the second rotating disc, and an anti-winding type placing mechanism for placing the bunch-stranded copper wires is arranged on the workbench. According to the invention, by using the anti-winding placement mechanism, when a group of copper conductors are twisted, the wiring terminals fall onto the placement seat for placement, so that the process of manually taking down each group of twisted copper conductors by a worker is omitted, the labor intensity of the worker is reduced, and each group of copper conductors are independently placed and cannot be wound with each other, so that the production efficiency of the wiring terminals is improved. And subsequent unified transportation is facilitated.

The invention relates to the technical field of cable manufacturing, in particular to a lightweight radio frequency microwave cable and a manufacturing method thereof, and the method comprises the steps: obtaining a silver-plated copper conductor; extruding the PTFE microporous medium through a pushing machine, and coating the silver-plated copper conductor with the PTFE microporous medium through a stretching machine to form a medium layer; a silver-plated flat copper strip is spirally wound on a PTFE microporous medium to form an outer conductor, and whether the spiral winding process of the silver-plated flat copper strip is qualified or not is determined based on a deviation characterization parameter of the silver-plated flat copper strip relative to the axis of the PTFE microporous medium. Determining to increase the extrusion temperature or extrusion pressure of the extruder according to the relative difference between the deviation characterization parameter and the deviation characterization parameter threshold value; 1 / 2 of a polyimide aluminum foil is wound on the outer conductor to form an electromagnetic shielding layer, a silver-plated copper wire is woven outside the electromagnetic shielding layer to form a woven shielding layer, and a fluoroplastic sheath is extruded outside the woven shielding layer to form a sheath, so that the manufacturing efficiency of the radio frequency microwave cable dielectric layer is improved.

The invention discloses a fire-resistant medium-voltage cable and a performance detection method thereof, and relates to the technical field of cables, the fire-resistant medium-voltage cable comprises a cable, the cable comprises an anti-impact buffer layer, the inner wall of the anti-impact buffer layer is sequentially provided with an expansion type mica tape, a corrugated stainless steel band armor and a ceramic fiber woven mesh, the inner wall of the ceramic fiber woven mesh is provided with a filling layer, and the filling layer is provided with a sealing layer. A double-gradient ceramic insulating layer is arranged in the filling layer, a double-layer heterogeneous semi-conductive water-blocking tape is arranged on the inner wall of the double-gradient ceramic insulating layer, a copper conductor is arranged on the inner wall of the double-layer heterogeneous semi-conductive water-blocking tape, and the cable can be pre-clamped by arranging a protection mechanism and completely wrapping the cable through a sponge pad; at the moment, the cable exists between the two opening and closing plates and the sponge pad and does not fall off, then the specific position of the cable is convenient to adjust, the two ends of the cable are clamped into the clamping heads more conveniently and rapidly, and the problem that the cable is difficult to clamp into the clamping heads manually due to the fact that the cable is heavy is solved.

The invention discloses a halogen-free low-smoke flame-retardant degaussing cable for ships, and the cable comprises a copper conductor, the outer layer of the copper conductor is sleeved with an insulating layer, and the outer layer of the insulating layer is sleeved with a degaussing flame-retardant composite layer. The degaussing flame-retardant composite layer is prepared from a degaussing flame-retardant composite material; the degaussing flame-retardant composite material comprises the following raw materials in parts by mass: 100 parts of an ethylene-vinyl acetate copolymer, 15-20 parts of nano nickel-zinc ferrite, 60-80 parts of a modified flame retardant, 10-15 parts of red phosphorus microcapsules and 3-5 parts of nano montmorillonite, and the halogen-free low-smoke flame-retardant degaussing cable for ships and warships provided by the invention is a halogen-free low-smoke flame-retardant degaussing cable for ships and warships. Through the multistage flame-retardant system design and the nano ferrite degaussing integration and interface synergistic strengthening process, synergistic optimization of halogen-free, low-smoke, high-flame-retardant and degaussing functions of the ship cable is realized, and compared with the traditional technology, the ship cable is remarkably improved.

The application discloses a fire-resistant medium-voltage cable and a performance detection method thereof, and relates to the technical field of cables.The fire-resistant medium-voltage cable comprises a cable, and the cable comprises an impact-resistant buffer layer, the inner wall of the impact-resistant buffer layer is sequentially provided with an expanded mica tape, a corrugated stainless steel tape armor and a ceramic fiber woven mesh, the inner wall of the ceramic fiber woven mesh is provided with a filling layer, the filling layer is internally provided with a double-gradient ceramic insulation layer, the inner wall of the double-gradient ceramic insulation layer is provided with a double-layer heterogeneous semi-conductive water-resistant tape, and the inner wall of the double-layer heterogeneous semi-conductive water-resistant tape is provided with a copper conductor.The protection mechanism is arranged and completely wrapped by the sponge pad, so that the cable can be pre-clamped, the cable at this time exists between the two opening and closing plates and the sponge pad, and will not fall off, thereby facilitating the adjustment of the specific position of the cable, and the two ends of the cable are clamped into the clamping head more conveniently and quickly, and the problem that the cable is difficult to be manually clamped into the clamping head due to the heavy weight of the cable will not occur.

The utility model discloses a power transmission cable which comprises a copper conductor, a flame-retardant layer is arranged on the outer side of the copper conductor, a plurality of supporting plates are fixedly connected to the outer side of the flame-retardant layer, a heat-absorbing filling layer is filled between every two adjacent supporting plates, one end of each supporting plate is fixedly connected with an arc-shaped elastic piece, and the other end of each supporting plate is fixedly connected with a cable. A heat insulation layer is fixedly connected to the outer sides of the multiple arc-shaped elastic pieces, a metal shielding layer is fixedly arranged on the outer side of the heat insulation layer, an insulating layer is fixedly arranged on the outer side of the metal shielding layer, and a compression-resistant assembly is fixedly arranged on the outer side of the insulating layer. Therefore, internal stress generated inside is reduced, the phenomenon that the working state and shape of the power transmission cable are changed due to non-uniform expansion of all positions of the heat conduction material is avoided, and the influence on the performance of the power transmission cable is reduced.

The utility model discloses a composite protection intelligent cable for mountain rail transit, which belongs to the technical field of cables and comprises a circular copper conductor, and a conductor semi-conductive shielding layer, an insulating layer, an insulating semi-conductive shielding layer and a semi-conductive water-blocking buffer layer are sequentially arranged outside the circular copper conductor. A metal shielding layer is arranged in the semi-conductive water-blocking buffer layer, and a waterproof layer, an oxygen barrier layer, an armor layer, an alkali-free glass fiber tape wrapping layer, an outer sheath layer and a composite sheath layer are sequentially arranged outside the semi-conductive water-blocking buffer layer; and a temperature measuring and communication optical cable is arranged in the metal shielding layer. The 35kV flame-retardant B1-level composite protection intelligent cable for mountain rail transit has wear-resistant, rat-proof, termite-proof and ultraviolet-proof additional performance, a temperature-sensing detection optical cable is arranged on a metal shielding layer, the whole line is effectively monitored, management of a master console is matched, when the temperature exceeds the set temperature, automatic alarm, power-off protection and line switching are achieved, and the service life of the cable is prolonged. Fire situations such as electrical short circuit are avoided, and safe and reliable operation of rail transit lines is guaranteed.

The utility model discloses a novel high-temperature-resistant corrosion-resistant medium-voltage power cable, which comprises a nickel-plated copper conductor, a double-layer high-silica glass fiber yarn layer is arranged on the surface of the nickel-plated copper conductor, and a conductor shielding layer, a polytetrafluoroethylene insulating layer, an insulating shielding layer and a copper strip shielding layer are sequentially arranged outside the double-layer high-silica glass fiber yarn layer. And a flame-retardant alkali-free glass fiber rope filling layer is arranged outside the copper strip shielding layer. The novel high-temperature-resistant corrosion-resistant medium-voltage power cable provided by the utility model has high-temperature-resistant and corrosion-resistant effects by arranging the nickel-plated copper conductors, the high-temperature-resistant performance of the conductors is improved by arranging the double-layer high-silica glass fiber yarn layers, the tensile strength of the product is improved by arranging the steel wire armoring, and the novel high-temperature-resistant corrosion-resistant medium-voltage power cable has high-temperature-resistant performance. The cable provided by the utility model has the advantages of high temperature resistance, corrosion resistance, excellent tensile property, thermal aging property and the like, normal and stable work at rated high temperature, no influence on electric energy transmission performance, and long service life.

The invention relates to the technical field of fireproof cables, in particular to a flexible fireproof cable with staggered cooling runners, which comprises a fireproof cable body, and the fireproof cable body comprises a stranded copper conductor, a conductor insulator, a cabling, an argon arc welding corrugated copper sleeve and a halogen-free flame-retardant polyolefin outer sheath from inside to outside. And the outer side of the fireproof cable body is sleeved with an externally-hung monitoring flow guide device at the joint positions at the two ends. According to the flexible fireproof cable with the staggered cooling flow channel, conductor insulation is formed by a polyester belt, a double-sided synthetic mica belt and a conductor single-sided synthetic mica belt, and a cabling is formed by a halogen-free flame-retardant filling rope, a cabling single-sided synthetic mica belt and a halogen-free flame-retardant belt to form a flame-retardant material; the flame-retardant effect of the whole cable can be greatly enhanced, and secondary pollution is avoided; and an argon arc welding corrugated copper sleeve is arranged between the cabling and the halogen-free flame-retardant polyolefin outer sheath, so that the fireproof cable body has certain flexibility, and a serial cavity can be formed in the fireproof cable body.