16results about How to "Increase ampacity" patented technology

A busbar electric connecting wire clamp comprises a wire clamp body and clamping plates, the clamping plates are fixedly connected to the lower portions of the two sides of the wire clamp body through first bolt pairs, a groove is formed in the lower end face of the wire clamp body in the line direction, an elastic contact piece is fixed in the groove, and the lower end face of the elastic contact piece protrudes out of the groove; the wire clamp body is arranged above the busbar, the wire clamp body is clamped and fixed on the top of the busbar through the clamping plate, and the lower end face of the elastic contact piece abuts against the top of the busbar.

The utility model relates to the technical field of power equipment, and discloses an assembly type cable duct bank for increasing the current-carrying capacity of a cable, which comprises a plurality of cable duct bank units which are coupled and spliced, the center of the cross section of each cable duct bank unit is provided with a hollow heat dissipation hole, and a plurality of cable holes are uniformly distributed outside the heat dissipation hole; the tongue-and-groove side of the cable duct bank unit is provided with a horn mouth, and the other side of the cable duct bank unit penetrates into the horn mouth to be coupled and spliced; the top of the cable duct bank unit is provided with a hanging nail and a grounding steel plate. By adopting the hollow structure, the contact surface between the interior of the calandria and the air is increased, the heat dissipation is fast, and the current-carrying capacity of the cable is improved.

The utility model discloses a new energy vehicle liquid cooling charging pile cable, the cable includes the cable core, and the cable core periphery has the protection layer, the outer sheath from inside to outside in proper order and covers, the cable core includes 2 power line core, ground wire core, backflow pipe, 2 auxiliary power line core, control cable core, signal cable core, 2 power line core in the cable core symmetrical position, and ground wire core and backflow pipe are located respectively two sides of 2 power line core and with 3 power line core and is tangent outward, and the hole section area of backflow pipe is same with the conductor profile section area of power line core, and the present application has the superfast charging performance and reliability of large current.

The invention relates to the technical field of cables, and discloses a safety early warning cable with a temperature sensing function and a production process thereof.According to the cable, a spiral metal protection tube and a temperature measurement optical fiber are arranged in a conductor to form a core temperature measurement channel, and a redundant temperature measurement system is formed in cooperation with a multi-core sensing optical cable; vibration sources are accurately distinguished by combining two-way vibration sensing and AI signal recognition, and meanwhile, a multi-layer composite isolation layer and a three-dimensional heat conduction network are designed, so that efficient heat diffusion is achieved; according to the production process, the insulation performance of the cable and the stability of the sensing element are improved through a precise temperature control co-extrusion process, an online thermal stress relaxation treatment process and an optical fiber pre-fixing process. According to the invention, the temperature measurement reliability and the vibration identification precision are obviously improved, the cable thermal management capability is optimized, the service life is prolonged, the insulation eccentricity and the pre-crosslinking defect can be effectively reduced by the production process, and the overall quality of the product is improved.

This invention discloses a cross-linked polyethylene insulated power cable and its preparation method, belonging to the field of power cable technology. The power cable, from the inside out, comprises: a conductor core, a conductor semi-conductive inner shielding layer, a main insulation layer, an insulating semi-conductive outer shielding layer, a semi-conductive buffer water-blocking layer, a corrugated metal waterproof sheath, and an outer sheath. The gaps between the conductor core strands are filled with semi-conductive resistive grease. The cable preparation method includes the following steps: S1, preparing the conductor core; S2, three-layer co-extrusion; S3, water-blocking layer extrusion; S4, sheath extrusion. This invention replaces the non-woven fabric tape with a foamed layer made from a blend of ethylene propylene diene monomer (EPDM) rubber and ethylene-vinyl acetate copolymer / styrene-butadiene rubber composite base material, achieving dynamic absorption of radial displacement in the cable. The synergistic effect of this dual design reduces fatigue cracking of the aluminum sheath caused by expansion thrust and prevents capacitive discharge caused by interfacial air gaps; thus improving the cable's current carrying capacity and periodic reliability.

The invention relates to the technical field of power cables, in particular to a middle-high voltage power cable for long-distance high-capacity power transmission and a preparation method of the middle-high voltage power cable for the long-distance high-capacity power transmission. The conductor shielding layer is coated on the outer wall of the layered split conductor; the insulating layer is coated on the outer wall of the conductor shielding layer; the insulating shielding layer is coated on the outer wall of the insulating layer; the buffer layer coats the outer wall of the insulation shielding layer; and the armor layer coats the outer wall of the buffer layer. The layered split conductor structure breaks through the process limitation of the number of traditional split conductor strand blocks, the composite insulation structure layer is composed of the micro-arc oxidation insulation separation layer and the composite elastic insulation rope, the ultra-thin and tough ceramic coating replaces crepe paper, the filling coefficient and the insulation reliability are improved, and through the filling buffering effect of the elastic rope, the insulation performance of the conductor is improved. And the integrity of the insulating coating under a harsh process is protected.

The utility model relates to the technical field of power cables, and discloses a special-shaped stranded conductor power cable and a stranding processing device thereof.The special-shaped stranded conductor power cable further comprises a cable conductor, the outer side of the cable conductor is fixedly connected with an insulating layer, the outer side of the insulating layer is wrapped with a first wrapping tape, and the outer side of the first wrapping tape is wrapped with a second wrapping tape. And a filling layer is arranged between the first wrapping tape and the insulating layer. The twisting processing device comprises a bottom plate, and further comprises an inserting rod and a twisting assembly, the top of the bottom plate is fixedly connected with a supporting plate, the top of the bottom plate is fixedly connected with a twisting cylinder, the inserting rod is pulled out from the interiors of a U-shaped seat and a wire roller body through a shifting block, the wire roller body is convenient to replace, and the twisting efficiency is improved. The through holes of the wire roller body are aligned and inserted into the through holes of the U-shaped seats, then the clamping blocks are clamped into the annular grooves of the inserting rods, the inserting rods are limited, the inserting rods can only rotate, and replacement of the wire roller body is completed.

This utility model discloses an explosion-proof and flame-retardant liquid-cooled high-voltage automotive cable and its cable sheathing equipment. The cable includes a liquid-cooling pipe, a bare copper conductor, a wrapping layer, an explosion-proof tin-plated braided copper mesh, and a polyolefin insulation layer; the liquid-cooling pipe is located in the center of the cable. The cable sheathing equipment is a screw extruder, and the extrusion die is a double-layer die, including an inner die tube and an outer die tube. This utility model can effectively improve the cooling efficiency of the cable by setting up the liquid-cooling pipe, reducing the risk of fire caused by cable overload during the operation of electric vehicles, and improving the safety of electric vehicle operation. The cable sheathing equipment provided by this utility model, through the setting of the double-layer extrusion die, can effectively reduce the risk of compression deformation of the liquid-cooling pipe during the extrusion operation, ensuring the cooling efficiency of the cable.

This utility model discloses an airport lighting cable, comprising a conductor one and a conductor two. The conductor one and conductor two are twisted together, and the outer walls of both conductor one and conductor two are respectively covered with an insulation layer one. A metal layer is disposed on the outer wall of the insulation layer one, and an insulation layer two is disposed on the outer wall of the metal layer. The insulation layer two and the metal layer are connected by a covering process. This utility model relates to the field of airport lighting cable technology. This airport lighting cable, through the arrangement of conductor one, conductor two, insulation layer one, metal layer, insulation layer two, shielding layer, filling layer, and protective layer, improves conductivity. The use of high-purity copper or aluminum as conductors and the application of a multi-strand twisted conductor structure enhance the cable's conductivity and current carrying capacity, reduce power loss, ensure a stable power supply for airport lighting equipment, guarantee the normal operation of the lighting system, and enhance anti-interference capabilities.

This invention relates to the field of overhead power transmission conductor technology, and in particular to a tenon-and-mortise interlocking ultra-high strength aluminum alloy steel core conductor and its preparation method. The conductor comprises an ultra-high strength steel core and an outer ultra-high strength aluminum alloy conductive layer. The ultra-high strength steel core is a G3A grade galvanized steel core, and the ultra-high strength aluminum alloy conductive layer is composed of 3-4 layers of S / Z type tenon-and-mortise interlocking wires concentrically stranded. The S / Z type tenon-and-mortise interlocking wires are a single-layer, single-wire concave-convex interlocking structure. This invention optimizes the Mg-Si-Zr-RE-B multi-element alloy composition system, achieving a Mg to Si mass ratio of 1.0-1.4, and combines this with a "solution-cold drawing-double-stage aging" process. This maintains high conductivity while increasing tensile strength to ≥360MPa, achieving an excellent match of high strength and high conductivity, and significantly improving strength while ensuring unchanged conductivity.

The utility model provides a kind of axle counter anti-interference system suitable for 27.5KV system line, by optimizing the installation position of axle counter sensor along track, using electromagnetic shielding and distance attenuation principle, avoid its in strong electromagnetic interference source vicinity, reduce the influence of outside interference to axle counter sensor, to reduce the axle counter failure incidence;Specifically, according to different ballast type to take different anti-interference measures: for main line whole ballast, using axle counter point two ends separate grounding technology, utilize the low resistance characteristics of ground net, the interference current generated by rail return flow is introduced into the earth, reduce the traction current flowing through axle counter sensor, ensure the stable operation of axle counter equipment;For vehicle depot field gravel ballast, using current sharing technology, the rail return flow before and after axle counter point is evenly distributed to the surrounding track, effectively weaken the interference influence of large current on rail to axle counter sensor, ensure the normal work of axle counter equipment in the complex environment of vehicle depot.

The utility model relates to an electric lap joint structure and an inductor, and relates to the technical field of inductors, the electric lap joint structure comprises an aluminum core, a transition bar and a copper bar, the aluminum core comprises a vertical part and a straight part, the transition bar is arranged on the straight part of the aluminum core and is arranged between the straight part and the copper bar, and the transition bar is arranged between the vertical part and the copper bar. The aluminum core is electrically connected with the copper bar through the transition bar, and the aluminum core, the transition bar and the copper bar are fixed through bolts. The aluminum core and transition bar structure is used for replacing an all-copper inductor, aluminum serves as a material which is low in price and good in electric lead, and the production cost of the whole inductor can be reduced; the electric connection between the aluminum core and the copper bar adopts the transition bar for bridging, so that the direct contact between aluminum and copper is avoided, and the electrochemical corrosion is effectively avoided; and a bolt fixing mode is adopted, so that the complexity of a production process is reduced, the problem of material stress possibly caused by high-temperature welding can be avoided, and the reliability and stability of the inductor are further improved.

The utility model discloses a copper core aerial cable which comprises a soft copper core conductor, a conductor wrapping layer, a conductor shielding layer, an insulating layer and an outer sheath layer, and the conductor wrapping layer, the conductor shielding layer, the insulating layer and the outer sheath layer are sequentially wrapped outside the soft copper core conductor from inside to outside. The soft copper core conductor comprises a plurality of strands, the plurality of strands are twisted to form the soft copper core conductor, the strands comprise a plurality of soft copper single wires, the plurality of soft copper single wires are twisted to form the soft copper single wires, and gaps among the strands are filled with water-blocking paste. The copper core aerial cable provided by the utility model has the performances of good flexibility, small resistance and the like, and solves the problems of poor bending performance, large conductor loss, high construction cost, large construction difficulty and the like in the use process of the conventional aerial insulated cable.

The application discloses a composite metal foil and a circuit board. The composite metal foil comprises a dielectric layer, a first resistance layer and a first conductive layer. The first resistance layer is arranged on one side of the dielectric layer. At least part of the area on the side of the dielectric layer close to the first resistance layer is provided with a first protruding structure. The at least part of the area on the side of the first resistance layer close to the dielectric layer and the at least part of the area on the side of the first resistance layer away from the dielectric layer are both provided with a second protruding structure. The first conductive layer is arranged on the side of the first resistance layer away from the dielectric layer. The second protruding structure increases the cross-sectional area of the first resistance layer, improves the current-carrying capacity of the first resistance layer, and further improves the ESD resistance of the first resistance layer, thereby improving the anti-static breakdown capacity of the embedded resistance.

The utility model relates to a kind of high-voltage cable and high-voltage cable system, and the high-voltage cable includes center layer and conductor layer. Among them, the center layer is formed by twisting multiple insulated filaments;Conductor layer, coated center layer, conductor layer includes multiple composite conductor layers sequentially arranged along the first direction, composite conductor layer is formed by twisting multiple insulated filaments, or multiple bare conductors are twisted to form, or insulated filaments and bare conductors are twisted to form according to preset proportion. The above-mentioned high-voltage cable, the center layer uses insulated filament, the conductor layer uses insulated filament or bare conductor or the combination structure of both, suppresses skin effect, ensures uniform distribution of current, improves cable conductor carrying capacity;At the same time, it greatly reduces the amount of enameled conductor, has small size, low loss, high reliability.

A coil structure includes a first magnet ring, a second magnet ring, a first side single wire group including first to sixth single wires, and a second side single wire group including seventh to ninth single wires. The first to third single wires and the seventh single wire are twisted into a first twisted wire, and the fourth to sixth single wires and the eighth single wire are twisted into a second twisted wire. The first and second stranded wires are wound around the first magnet ring in a staggered and non-overlapping manner. The seventh to ninth single wires are twisted outside the first magnetic ring to form a third twisted wire and extend to wind the second magnetic ring. The fourth single wire on the first side of the first magnetic ring, the second single wire on the second side and the third single wire are twisted into a fourth twisted wire. And the fifth single wire and the sixth single wire at the first side of the first magnetic ring and the first single wire at the second side are twisted into a fifth twisted wire. The first to third single wires on the first side of the first magnetic ring are twisted into a sixth twisted wire. And the fourth to sixth single wires on the second side of the first magnetic ring are stranded into a seventh stranded wire. Therefore, by twisting the plurality of single wires, the wire sectional area is increased, the wire resistance is reduced, the product temperature rise is effectively reduced, and the application power is improved.