303 results about "Copper tape" patented technology

The invention relates to the technical field of electric wires and cables, and discloses an ultrahigh-conductivity electric wire and cable and a preparation method thereof. A graphene enhancement layer; a nano composite insulating material layer; an inner semi-conductive layer; a conductive copper strip shielding layer; a silver-plated copper wire woven mesh shielding layer; an intelligent monitoring and protection sheath; the method comprises the following steps: step S01, preparing a superconducting core wire strand; step S02, preparing a nano composite insulating material layer; s03, preparing a shielding layer; step S04, intelligent monitoring and protection sheath preparation; the superconducting core wire strand formed by twisting a plurality of YBCO superconducting material filaments forms a stable structure with excellent conductivity under the precise control of twisting process parameters, so that the resistance is effectively reduced, the loss in the electric energy transmission process is reduced, the electric energy transmission efficiency is improved, high-density current can be borne for stable transmission, and the service life of the cable is prolonged. And the requirement of the modern electrical engineering field on high conductivity of wires and cables is met.

The invention discloses a copper strip coil steel sleeve transfer device which comprises a base, a steel sleeve bearing lifting frame and a steel sleeve storage frame and further comprises a pushing structure, a sliding rail is arranged on the base in the axial direction of a rolling shaft, the steel sleeve bearing lifting frame is arranged on the sliding rail, and the steel sleeve storage frame and the pushing structure are arranged corresponding to the outer end of the sliding rail. The steel jacket storage rack and the pushing structure are correspondingly arranged on the two sides of the sliding rail. The disassembled steel sleeve is supported by the steel sleeve bearing lifting frame, the steel sleeve bearing lifting frame supports and bears the steel sleeve to move to the pushing position together, the steel sleeve descends to be flush with the steel sleeve storage frame, the steel sleeve is pushed into the steel sleeve storage frame through the pushing structure, the structure is compact, the occupied space is small, and workshop arrangement and installation are facilitated; and the steel jacket transfer operation is efficient.

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 utility model discloses a driving four-axis index plate for copper strip production, which relates to the technical field of four-axis index plates and comprises a bottom plate and an adjusting component. Two corresponding supporting plates are fixed to the right end of the upper side of the bottom plate, rotating holes are formed in the edges of the upper sides of the supporting plates, rotating shafts are rotationally connected into the rotating holes, a four-shaft index plate is fixed between the two rotating shafts, a cooling assembly is installed on the left side of the bottom plate, and a gas injection assembly is installed on the upper side of the cooling assembly. The spraying assembly and the extrusion assembly are mounted on the upper side of the bottom plate, and the gas injection assembly is connected with the spraying assembly; and the adjusting assembly comprises a connecting disc, clamping grooves, fixing blocks, clamping rods, inclined blocks and springs, the connecting disc is fixed to the end face of the rotating shaft, the clamping grooves which are evenly distributed are formed in the circumferential face of the connecting disc, the fixing blocks are fixed to the side face of the supporting plate, efficient heat dissipation can be achieved, and meanwhile rapid adjustment can be achieved according to needs.

The invention relates to the technical field of overhead cables, in particular to an overhead conductor cable with a split type diversion mechanism, which comprises a cable body, and the cable body comprises a conductor, a conductor shield, an insulator, an insulation shield, a copper strip shield, a filler, a wrapping tape, an inner sheath, an armor and an outer sheath from inside to outside. According to the overhead conductor cable with the split type flow guide mechanism, the middle flow guide frame is arranged on the armor, and the internal flow guide pipe inserted into the middle flow guide frame is communicated with the split type flow guide mechanism; according to the split type diversion mechanism, diversion nozzles on two sides are inserted into lateral openings of an internal diversion pipe to form a circulating flow channel on a cable body, so that the heat dissipation performance in the cable can be greatly improved, and the cable can stably and efficiently run for a long time; the plurality of annular assembling grooves are formed in the outer side of the outer sheath, the split type flow guide mechanisms are installed on the annular assembling grooves to be fixed to the cable, splicing can be carried out in the later period, and the installation mode is simple and rapid.

The utility model discloses a copper band leveling device, including feeding module, leveling module and receiving module, the feeding module includes fixed frame, rotatable installation on the fixed frame's rotating roller, be used for driving rotating roller rotation's drive motor and be used for fixing and installing copper band winding pipe on the rotating roller's tensioning component, the rotating roller is through drive shaft with the output end transmission connection of drive motor, the outer diameter of rotating roller is less than the inner diameter of copper band winding pipe, the tensioning component includes the sliding pipe of sliding on the rotating roller, the tensioning block of being connected with sliding pipe through linkage and be used for fixing the compression member of sliding pipe, the center of rotating roller is equipped with center sliding hole, and the sliding pipe cooperation is inserted in the center sliding hole, the outer wall of rotating roller is equipped with the tensioning hole of intercommunication with the center sliding hole, and the tensioning block cooperation is inserted in the tensioning hole.

The present invention provides a copper strip pickling and drying device, comprising a first mounting seat, a limiting member, a lifting screw, a mounting frame, a guide roller, a drying mechanism and a blocking mechanism, wherein there are two limiting members, which are respectively arranged on the upper rear side of the first mounting seat, the lifting screw is rotatably arranged on the upper front side of the first mounting seat, the mounting frame is slidably connected to the limiting member, the guide roller is rotatably arranged on the mounting frame, the drying mechanism is arranged on the first mounting seat, and the blocking mechanism is arranged on the drying mechanism. The copper strip is placed between the tops of the guide rollers and the copper strip is fitted with the drying roller, and the direction of the air outlet slot opening on the blocking member is adjusted by operating the regulating motor so that the final flow direction of the air flow can face the surface of the copper strip. During the movement of the copper strip, the hot air flow will continuously be discharged through the heat dissipation holes on the drying roller, and the upper and lower surfaces of the copper strip will be dried in a close-fitting manner in both directions. The air flow will be concentratedly sprayed under the bunching effect, thereby improving the drying efficiency and drying effect.

This invention discloses an environmentally friendly, green, halogen-free flame-retardant cable and its preparation method, relating to the field of cable technology. The cable includes a tin-plated copper conductor at its center. An inner shielding layer, an insulation layer, and an outer shielding layer are extruded onto the conductor using a three-layer co-extrusion process to form an insulated core. The insulated core is then wrapped with an oxygen-free soft copper strip as a metallic shielding layer, followed by a semi-conductive water-resistant tape pad, then longitudinally wrapped with an aluminum-plastic composite tape and extruded with polyethylene. A waterproof layer is wrapped with a double-layer high-strength corrosion-resistant alloy tape as an armor layer. The outermost layer of the cable is extruded with a flame-retardant outer sheath. This sheath uses polyethylene as a base material, adding maleic anhydride-modified oleic acid and peroxide, and incorporating zinc oxide and magnesium oxide to form an ion network structure, while also incorporating flame-retardant fillers. This invention exhibits good tensile strength, electrical insulation performance, compressive and tensile strength, and bending performance, while also possessing excellent elongation at break, low-temperature crack resistance, and halogen-free flame-retardant characteristics.

The utility model provides a high heat dissipation flanging type copper strip frame structure, comprising a frame main body, the surface of which is connected with frame carriers from left to right in sequence; the plurality of flanged copper strips are respectively arranged on the surfaces of the plurality of frame carriers, and a copper strip folding lug is arranged on one side of the surface of each flanged copper strip; the chip main body is arranged on the surface of the edge folding type copper strip and located on one side of the copper strip folding lug, a plurality of copper strip glue locking holes are transversely and longitudinally formed in the surface of the edge folding type copper strip, and a plurality of elastic piece supporting feet are sequentially arranged on the surface of the frame main body from left to right. The high-heat-dissipation flanging type copper strip frame structure provided by the utility model has the advantages that in the aspect of electrical performance, the resistance is reduced, the heat generation is reduced, and a relatively high packaging resistance value caused by metal wire connection can be avoided, so that the heat generated when current passes through is reduced, the performance and the stability of a chip are favorably improved, and the service life of the chip is prolonged. And the limitation of the conductive performance of the metal wire is broken through.

The invention relates to the technical field of cables, in particular to a torsion-resistant aluminum alloy cable which comprises a cable core composed of an aluminum alloy conductor, an isolation shielding layer and a crosslinked polyethylene inner sheath. The polyimide film is used for binding and fixing the plurality of cable cores; the outer layer of the polyimide film is sequentially coated with a copper strip wrapping shielding layer, a mica wrapping layer and an outer sheath layer. The outer sheath layer material has excellent mechanical properties and can effectively protect a conductor, and the prepared cable has good torsion resistance and fully meets multi-scene application requirements.

The invention discloses an environment-friendly intelligent medium-voltage cable, and relates to the technical field of cables, the environment-friendly intelligent medium-voltage cable comprises cable main body assemblies, a joint assembly and a disassembly assembly, the joint assembly is used for connecting the two cable main body assemblies, and the cable main body assemblies comprise a plurality of copper strip shields; the outer surface of each copper strip shield is fixedly connected with two disassembling assemblies; according to the environment-friendly intelligent medium-voltage cable, the drawing ring is pulled outwards to drive the limiting clamping strip to be drawn outwards, and the first buckle and the second buckle are tightly clamped outside the limiting clamping strip at the same time, so that when the limiting clamping strip is drawn out, the first buckle and the second buckle can be easily separated; the problem that all the layers in an existing medium-voltage cable are adhered through adhesives and cannot be classified and recycled is solved.

The invention discloses a special-shaped copper strip finish rolling forming device, and relates to the technical field of copper strip production and processing. A special-shaped copper strip finish rolling forming device comprises a main body mechanism which comprises an input bin and an output bin. A finish rolling assembly is arranged between the input bin and the output bin; the finish rolling assembly is composed of four forming assemblies. The forming assembly comprises a shaping mechanism, the shaping mechanism comprises two bottoms, and a first bottom roller assembly is installed between the two bottoms; the upper surface of the bottom is fixedly connected with rail frames, and a molding assembly is installed between the two rail frames. Pressing mechanisms are arranged on the two sides of the shaping mechanism correspondingly, each pressing mechanism comprises two base plates, and a second bottom roller assembly is installed between the two base plates; second rail grooves are formed in the upper portion of the base plate in a penetrating mode, and a pressing assembly is arranged between the two second rail grooves. And the total deformation of the anisotropic copper strip is decomposed into four gradients, so that the stress concentration problem is remarkably reduced, and the forming stability is improved.

The utility model discloses a copper strip stretch bending and straightening mechanism which comprises a bottom plate, a pair of feeding rollers are arranged on the bottom plate through a roller frame, any feeding roller is provided with a driven belt wheel, the driven belt wheel is arranged on a driving belt wheel through a transmission belt, the driving belt wheel is arranged on a motor through a coupler, and the motor is arranged on the bottom plate. At least two longitudinal fixed rolling wheels are arranged on the left side of the feeding roller, and a longitudinal adjusting rolling wheel is arranged between the opposite sides of the two longitudinal fixed rolling wheels; and at least five transverse wheels which are arranged in a staggered manner are arranged on the left side of the fixed roller. According to the copper strip straightening device, the adjustable longitudinal adjusting rolling wheels are arranged on the two sides of the straightening transverse wheels, when the copper strip is wide, the distance between the longitudinal fixing rolling wheels and the longitudinal adjusting rolling wheels can be adjusted to be wide by rotating the adjusting screw rods, otherwise, when the copper strip is narrow, the copper strip can be adjusted to be narrow, and adaptability is high.

The present invention relates to the field of assembly and manufacturing, and in particular to a method for improving the success rate of shrink-fitting between a sliding rotor and a sleeve of a pumped storage unit; the method comprises: using an upper guide sleeve shrink-fitting tool to check whether the copper tape wrapping is qualified; when the copper tape wrapping is qualified, drawing a shrink-fitting alignment observation line along the axial direction of the upper guide sleeve; lowering the upper guide sleeve into the upper guide sliding rotor; the upper guide sleeve insulated lower edge enters the secondary step of the guide sliding rotor through the guidance of composite paper; if the upper plane of the upper guide sliding rotor does not reach the position line of the lower edge of the upper guide sleeve, the composite paper is pulled out, and the upper guide sliding rotor is lowered until the upper plane of the upper guide sleeve is flush with the upper plane of the upper guide sliding rotor, and the lowering is ended to complete the shrink-fitting; the advantages of the present invention are that it realizes the inspection of the direction and angle of the copper tape wrapping, assists the upper guide sleeve insulated lower edge to accurately enter the secondary step of the upper guide sliding rotor, and can ensure the technical effect of precise alignment during the shrink-fitting process during the lowering, thereby improving the success rate of the shrink-fitting between the upper guide sliding rotor and the upper guide sleeve.

The application relates to the technical field of electric wire and cable, and discloses a fluoroplastic insulation high-temperature-resistant fireproof cable and a preparation method, the cable comprises a conductor layer, the conductor layer is twisted by multiple copper wires, the conductor layer is coated with a fluoroplastic insulation layer, the fluoroplastic insulation layer is coated with a shielding layer, the shielding layer is a copper-belt woven structure, the shielding layer is coated with an armor layer, the armor layer is woven by stainless steel wires, the armor layer is coated with a sheath layer, and the sheath layer comprises the following components in mass fractions: functionalized ethylene-tetrafluoroethylene copolymer, 50-70 parts by mass. The application constructs an interpenetrating polymer network formed by in-situ crosslinking of a functionalized fluoropolymer and an organic silicon elastomer in the sheath layer, and adopts an energy field gradient response vulcanization process, so that the prepared cable sheath keeps the inherent high-temperature resistance of fluoroplastic, and the flexibility and mechanical strength of the material are improved.

The utility model relates to the technical field of aluminum copper strip winding drum waste strip treatment, and discloses a residual winding machine convenient for removing aluminum copper strip winding drum waste strips, which comprises a rack, a hydraulic pump station, a control structure, a track, an X-shaped trolley, a hydraulic cylinder, a swing arm, a support roll shaft, a safety roll shaft, a winding shaft, an arc-shaped bracket, a pressing roll shaft, a guide roll shaft, a sleeve and a driving mechanism. According to the residual coiling machine facilitating removal of the aluminum copper strip coiling block waste strip, by arranging the coiling shaft, a residual plate strip on the sleeve can be manually fixed in the jaw, the plate strip can be conveniently removed from the sleeve, after collection is completed, the X-shaped trolley is controlled to ascend, the swing arm is controlled to be separated from the coiling shaft through the hydraulic cylinder, and the sector plate is controlled to contract, so that the plate strip is conveniently removed. According to the plate strip dismounting device, the X-shaped trolley can conveniently carry out residual plate strips, semi-automation of dismounting is achieved, manual participation is reduced, the working intensity of workers is reduced, the plate strips are dismounted in the manner, dismounting of narrow bands and wide bands can be comprehensively compatible, and the applicability of the plate strip dismounting device is improved.

The utility model relates to the technical field of cable manufacturing, and discloses a double-layer co-extrusion sheath cable which comprises a conductor, a conductor shielding layer, a crosslinked polyethylene insulating layer, an insulation shielding layer, a semi-conductive water-blocking tape, a soft round copper wire, a soft pure copper tape, a non-conductive water-blocking tape and a CPP tape from inside to outside. According to the double-layer co-extrusion sheath cable, the inner sheath layer and the outer sheath layer are arranged, the inner sheath layer is made of the flame-retardant PVC material with the oxygen index larger than or equal to 32%, a carbonization layer can be rapidly formed under the condition of high temperature or open fire, oxygen is effectively isolated, flame-retardant gas is released, and flame is prevented from spreading towards the interior of the cable, and the outer sheath layer is made of the high-hardness MDPE material. Although the flame retardance is general, the flame diffusion speed can be slowed down, and through the synergistic effect with the inner layer PVC, the overall flame retardant grade of the cable reaches the V-0 grade (UL 94 standard), the high-flame-retardant scene requirement is met, and the flame retardant property is further remarkably improved.

The utility model relates to the technical field of copper strip processing, in particular to a multi-layer interface calendaring forming device suitable for a copper strip, which comprises a calendaring mechanism and is used for calendaring forming of a multi-layer interface of the copper strip, the calendaring mechanism comprises a main body assembly, a plurality of rolling mechanisms and a plurality of rolling mechanisms, the main body assembly comprises a main frame fixed at the top of a base and sliding grooves formed in the two ends of the interior of the main frame; the execution assembly comprises an upper movable part and a lower movable part which are arranged at the upper end and the lower end in the base correspondingly, and a positioning part arranged in the middle in the base and matched with the upper movable part and the lower movable part for calendaring machining; the lower adjusting assembly comprises a lower mounting seat longitudinally and slidably mounted on the lower portion in the main frame, an inclined block fixed to the bottom of the lower mounting seat, extension seats fixed to the lower ends of the two sides of the main frame, inclined seats transversely and slidably mounted at the upper ends of the extension seats, and second air cylinders pivoted to the extension seats and used for driving the inclined seats; the calendering mechanism can meet the calendering requirements of copper strips with different thicknesses and can be used for calendering two copper strips at the same time.

The invention relates to the technical field of copper strip production, and discloses a copper strip hot rolling cooling device which comprises a fixing frame, four telescopic devices are fixedly installed on the fixing frame, connecting blocks are fixedly installed on output shafts of the four telescopic devices, and two movable frames are arranged below the fixing frame. A plurality of movable columns are movably connected into the two movable frames, each movable column is fixedly sleeved with a small ring, each water inlet pipe a is connected with a water source, and each air inlet pipe is connected with an air heater, so that after the copper strip is conveyed after hot rolling, water flow is sprayed downwards through a spray head a to cool the copper strip; then hot air of an air outlet groove is used for drying water stains on the copper strip to prevent the copper strip from being oxidized, meanwhile, the conveying device can drive the two movable frames to move back and forth to adjust the distance, and therefore the position of each spray head a can be adjusted according to the width of the copper strip; therefore, the water flow can be intensively jetted on the copper strip to avoid waste.

The utility model relates to the technical field of copper strip cleaning, in particular to a copper strip cleaning device which comprises a cleaning tank, two mounting supports are fixedly connected to the two ends of the outer side of the cleaning tank in a mirror symmetry mode, each mounting support is rotationally connected with a first rotating roller, and a water adding opening and a water discharging opening are further formed in the side end of the cleaning tank; the two ends of the second rotating rollers are rotationally connected to the bottom of the inner side of the cleaning tank in a mirror symmetry mode; the transmission mechanism is fixedly connected to the cleaning tank, and the transmission device is in transmission connection with two cleaning mechanisms in an up-down mirror image mode; the water scraping plate is arranged in the cleaning tank, and a water scraping opening is formed in the water scraping plate; the winding support is fixedly connected to one side of the cleaning tank, and a rotating tank with an opening in the top is formed in the top of the winding support; the cleaning mechanism is driven by the transmission mechanism to clean the copper strip, water on the surface of the subsequent copper strip is scraped off through the water scraping opening, and then the copper strip is further dried through the warm air fan.

The utility model discloses a kind of super-thin red copper tape winding devices of slitting correction, it is related to metal processing technical field, including main body;Fixed rod, the both ends of fixed rod piece are respectively fixedly connected in the both sides of main body;Fixed plate piece, the both ends of fixed plate piece are respectively fixedly connected in the both sides of main body;Mounting bracket, the top of main body is fixedly connected in mounting bracket;Correcting operation module, correcting operation module is set on mounting bracket, and the correcting operation module includes multiple sliding installation pieces and multiple fixed installation pieces.The utility model discloses a kind of super-thin red copper tape winding devices of slitting correction utilizes pressure spring rod to drive upper compression roller self-adapting depression, can effectively eliminate edge undulation and local wrinkle, simultaneously by upper compression roller clamping force lateral tension, can reverse stretch correction transverse bending, and there is no hard contact limiting mechanism, can be completed in the premise of avoiding edge scratch deviation correction.

The utility model discloses a copper strip flexible connector of a charging pile. The copper strip flexible connector comprises a copper strip main body, fixed sections positioned at two ends of the copper strip main body, an insulating sealing sleeve sleeved on the copper strip main body, and an elastic ribbon. The end, close to the fixed section, of the copper strip body is provided with a first sealing step, the inner wall of the insulation sealing sleeve is provided with a second sealing step, the two sealing steps are attached after being sleeved, and the two ends of the insulation sealing sleeve are provided with ribbon grooves used for bundling elastic ribbons. According to the copper strip flexible connector, the first sealing step, the second sealing step and the elastic cable tie are arranged, a gap between the copper strip body and the insulation sealing sleeve is effectively blocked, dust, water and other impurities are prevented from entering, and the sealing performance is improved; the connection tightness of the insulation sealing sleeve and the copper strip body is enhanced, displacement or looseness of the insulation sealing sleeve is prevented, and the overall structural stability is improved. The influence of impurities on the conductivity of the copper strip and oxidation and corrosion of the copper strip are avoided, good conductivity is guaranteed, the service life is prolonged, the maintenance cost is reduced, and the operation stability and safety of the charging pile are improved.

The utility model belongs to the technical field of copper strip production, and particularly relates to a copper strip deburring device which comprises a machining machine table and a polishing mechanism, a feeding roller and a receiving roller are installed at the head end and the tail end of the top face of the machining machine table respectively, and the polishing mechanism is installed in the middle of the top face of the machining machine table. The grinding mechanism comprises a moving block, a U-shaped grinding piece and a moving plate. The two moving plates are symmetrically distributed and have opposite moving freedom degrees in the horizontal direction, two symmetrically distributed moving blocks are elastically installed on each of the two moving plates, and notches are formed in the moving blocks; the two sets of U-shaped grinding pieces with the distance adjustable are arranged to grind and deburr the side edges of the brass strip, brass strips with different widths can be ground and deburred, and the application range is wide. The number of the U-shaped polishing pieces in the same group is two, the U-shaped polishing pieces can work at the same time or alternately, only the damaged U-shaped polishing pieces need to be detached for replacement, long-time shutdown is not needed, and the working efficiency is guaranteed.

The utility model relates to an edge folding mechanism, and discloses a copper strip edge folding mechanism which comprises a frame body, a roller wheel set rotationally arranged on the frame body and a driving assembly. The roller set comprises a first rolling assembly, a second rolling assembly and a third rolling assembly which are sequentially arranged in the copper strip conveying direction. When the copper strip passes through the pressing gap in the first rolling assembly, an outwards-expanded folded edge with an obtuse included angle is formed between the edge of the copper strip and a copper strip body, and when the copper strip passes through the pressing gap in the second rolling assembly, an inwards-folded folded edge with an acute included angle is formed between the edge of the copper strip and the copper strip body. When the copper strip passes through the pressing gap in the third rolling assembly, the edge of the copper strip and the copper strip body are completely pressed, and finally the folded copper strip is output from the device. According to the device, automatic edge folding and flattening are achieved, the copper strip edge folding efficiency is improved, the labor intensity of workers is reduced, and the large-scale production requirement is met. The copper strip edge folding device is suitable for the copper strip production industry and used for achieving copper strip edge folding.

The utility model discloses a high-efficiency double-station slitting device which comprises a device support, control boxes are installed on the two sides of the device support in a positioning mode, a slitting station is arranged in the middle of the upper end of the device support, a sliding rod is installed between the two sets of control boxes, and a first slitting device and a second slitting device are movably arranged on the sliding rod. An air cylinder is installed on the inner side of the control box, telescopic rods are arranged in the air cylinder, the telescopic rods on the two sides are connected with a first slitting device and a second slitting device respectively, and the first slitting device and the second slitting device each comprise a sliding base and a first slitting support. The high-efficiency double-station slitting device is provided with a double-station switching structure and a lifting type press-fit slitting structure, slitting adjustment can be conveniently and better carried out, the high-efficiency double-station slitting device is suitable for copper strips of more models and sizes, the slitting effect is more excellent, shutdown is not needed during overhauling and tool bit replacement, and the copper strip slitting machining efficiency is improved.

The invention discloses a non-contact continuous nondestructive testing device and method for critical current uniformity of a high-temperature superconducting tape, which is applied to the field of superconducting material detection, and comprises an excitation magnet for generating a background magnetic field and exciting the high-temperature superconducting tape to generate magnetization current; the measuring probe consists of a magnetic circuit iron core, a fluxgate sensor and a copper strip compensation loop; the fluxgate sensor and the copper strip compensation loop are respectively connected with the control and measurement circuit through a fluxgate power supply acquisition circuit and a copper strip compensation loop power supply circuit; and the control and measurement circuit is used for implementing PID (Proportion Integration Differentiation) control through closed-loop negative feedback when the fluxgate sensor detects that the net residual magnetic flux in the magnetic circuit iron core is not zero, generating magnetic flux which is equal to and opposite to the high-temperature superconducting strip in size in the copper strip compensation loop, and calculating critical current according to current in the copper strip compensation loop when the net residual magnetic flux is zero. According to the method, rapid and accurate measurement of the critical current uniformity of the high-temperature superconducting strip without depending on a Hall sensor and calibration back calculation is realized.

The utility model relates to a novel high-temperature-resistant power cable. The power cable comprises a plurality of insulated wire cores; each insulating wire core comprises a plurality of conductors, a first high-temperature-resistant wrapping tape, a semi-conductive conductor shielding layer, an insulating layer, a semi-conductive insulating shielding layer and a copper tape shielding layer. Flame-retardant fillers are arranged among the plurality of insulating wire cores; a double-layer high-temperature-resistant wrapping tape II is wrapped outside the plurality of insulating wire cores to form a cable core, an isolation sleeve is extruded outside the cable core, a galvanized steel tape armoring layer is wrapped outside the isolation sleeve, a high-temperature-resistant wrapping tape III is wrapped outside the galvanized steel tape armoring layer, and an outer sheath is extruded outside the high-temperature-resistant wrapping tape III. The cable has high temperature resistance, corrosion resistance, excellent light resistance, tensile strength, thermal aging resistance and the like, can normally and stably work at rated high temperature, has no influence on electric energy transmission performance, ensures that the cable has longer service life, and can be widely applied to high-temperature electric power transmission in the industries of steel, metallurgy, chemical engineering and the like.

The invention discloses a stamping connection terminal and a preparation method thereof, and relates to the technical field of electric appliance connection terminals. The stamping connection terminal is integrally formed by continuously stamping a high-precision phosphor copper strip, and comprises a contact end and a connection end. The contact end comprises a pair of elastic contact arms which are oppositely arranged, the free end of each elastic contact arm is bent to form a guide flange with a guide surface, and a plurality of hemispherical contact salient points are arranged at the junction of the guide surface and the elastic contact arms. The connecting end is provided with a clamping structure, and the clamping structure is provided with at least two rows of antiskid teeth which are distributed in a staggered mode. And a transition region between the contact end and the connection end. The surface of the contact end is provided with a gold-plated layer, and the surfaces of the connecting end and the transition area are provided with a mist tin-plated layer. The purity of the high-precision phosphorus copper strip is larger than or equal to 99.95%, the content of phosphorus is 0.03-0.08 wt%, the tensile strength is 350-400 MPa, and the ductility is larger than or equal to 15%. According to the invention, the problems that the connection is not tight enough, the conductive performance is not stable and the preparation cost is high in the actual use process of the current connection terminal can be effectively improved.

The utility model relates to a copper strip edge round edge trimming mechanism, and belongs to the technical field of copper strip trimming, the copper strip edge round edge trimming mechanism comprises a trimming platform, a first trimming mechanism and a second trimming mechanism are arranged on the trimming platform, and a supporting platform used for supporting a copper strip body is arranged in the middle of the trimming platform; the first trimming mechanism comprises first horizontal moving mechanisms located on the two sides of the supporting platform, cutters are arranged on the first horizontal moving mechanisms, and arc grooves used for making contact with the edges of the copper strip body are formed in the cutters. The second trimming mechanism comprises second horizontal moving mechanisms located on the two sides of the supporting platform, edge guide wheels are arranged on the second horizontal moving mechanisms, and annular arc grooves are formed in the edge guide wheels. The distance between the two edge guide wheels can be rapidly adjusted through the two second servo electric cylinders, burrs of copper strips with different widths are removed, the automation degree of copper strip trimming is improved, the labor intensity is small, and the trimming working efficiency is greatly improved.

The utility model discloses a cable, which belongs to the technical field of cables and comprises three conductor bodies, the outer side of each conductor body is provided with a conductor shielding part, the inner wall of each conductor shielding part is in contact with the outer surface of the conductor body, the outer side of each conductor shielding part is provided with an insulating layer, and the insulating layer is arranged on the outer side of the conductor shielding part. The inner wall of each insulating layer is in contact with the outer surface of the conductor shielding part, the outer side of each insulating layer is provided with an insulating shielding part, the inner wall of each insulating shielding part is in contact with the outer surface of the insulating layer, and the outer side of each insulating shielding part is provided with a copper strip shielding part. The inner wall of each copper strip shielding part is in contact with the outer surface of the insulation shielding part, and the outer surfaces of the three copper strip shielding parts are jointly and fixedly connected with a filler. According to the cable, the copper strip shielding part, the filler, the inner sheath, the armor, the outer sheath and the like are arranged for multi-layer protection, so that the cable has relatively high underground survivability and is not easy to break due to different natural sinking fall of land.