45results about "Concentric cables" patented technology

In some embodiments, a cable can include an electrically conductive inner core. A first insulation layer can be disposed about the inner core. An electrically conductive layer can be disposed about the first insulation layer. A second insulation layer can be disposed about the electrically conductive layer. A first polymer jacket can be disposed about the second insulation layer. The first polymer jacket can include a first layer of armor strength members disposed therein. A second polymer jacket can be disposed about the first polymer jacket. The second polymer jacket can include a second layer of armor strength members disposed therein. An outer polymer jacket can be disposed about the second polymer jacket. At least one of the first polymer jacket, the second polymer jacket, and the outer polymer jacket can be formed from an aliphatic polyketone polymer, an ethylene-propylene copolymer, a polyolefin elastomer, a polypropylene, or a cross-linkable polyethylene.

The invention relates to a combustion-resistant fireproof coaxial cable, and relates to the field of coaxial cables. The cable comprises a cable body and an outer coating, the cable body comprises an insulating layer, fireproof separators, conductors, a tension steel cable, a flame-retardant layer and an outer protective layer, the multiple fireproof separators are arranged in the insulating layer at intervals in the axial direction of the cable body, and the multiple conductors and the tension steel cable are arranged in the insulating layer; the plurality of conductors and the tension steel cables are arranged in a manner of respectively penetrating through the plurality of fireproof separators in a scattered manner, the insulating layer is sleeved with a flame-retardant layer, the flame-retardant layer is sleeved with an outer protective layer, and the outer protective layer of the cable body is sleeved with the outer coating layer. Through an innovative scheme of multi-level synergistic flame retardance, low-toxicity and low-smoke design and environment-friendly residue control, the core problems that a traditional coaxial cable is weak in flame retardance, high in toxicity and large in pollution are solved.

The invention relates to a high-voltage cable (6), in particular for electrostatically charging a paint in a painting system for painting motor vehicle body components (14) with a paint. The high-voltage cable (6) according to the invention has an electrically conductive first conductor (7) extending in the longitudinal direction of the cable. According to the invention, the high-voltage cable (6) additionally has an electrically conductive second conductor (9) extending in the longitudinal direction of the cable, wherein the second conductor (9) is electrically insulated from the first conductor (7). The invention further relates to a coating system having such a high-voltage cable (6) and to the novel use of such a high-voltage cable (6) in a coating system.

The invention relates to a high-voltage cable (6), in particular for the electrostatic charging of a coating in a coating system for coating motor vehicle body components (14) with a coating. The high-voltage cable (6) according to the invention has a first conductor (7) extending longitudinally and being electrically conductive. According to the invention, the high-voltage cable (6) additionally has a second conductor (9) extending longitudinally and being electrically conductive, wherein the second conductor (9) is electrically insulated from the first conductor (7). Furthermore, the invention also includes a coating system with such a high-voltage cable (6) and the novel use of such a high-voltage cable (6) in a coating system.

The application relates to the technical field of cable preparation, in particular to a superconducting semi-rigid cable using high-purity aluminum and a preparation method thereof. The method comprises the following steps: using high-purity aluminum as an inner conductor, and pretreating the inner conductor; using a pusher to coat a PTFE mixture on the surface of the pretreated inner conductor at normal temperature to obtain a normal-temperature pusher core wire; winding the qualified normal-temperature pusher core wire on a cable reel and then placing the cable reel in a vacuum high-temperature furnace to perform vacuum sintering, so as to obtain an inner conductor wrapped with an insulation layer; and passing the inner conductor wrapped with the insulation layer into a pure aluminum outer conductor pipe which has been processed, and coating PTFE on the outer conductor to form an outer protective sleeve. The application can improve the performance stability of the superconducting semi-rigid cable preparation.

The invention relates to a cable unit designed for connecting a gradient coil, which is designed to generate a magnetic field gradient in one spatial direction, to a power amplifier, comprising at least one supply line, wherein the supply line comprises at least two cable elements in at least sections, wherein the at least two cable elements are electrically connected in parallel.

The invention relates to the technical field of cables, and provides an aerospace flexible coaxial cable and a manufacturing method thereof. The conductor layer comprises an anti-torsion core, an inner twisted layer, a pressure-bearing layer and an outer twisted layer from inside to outside, and the pressure-bearing layer is embedded between the inner twisted layer and the outer twisted layer; the outer side of the conductor layer is provided with an insulating layer which is divided into an inner layer, a middle layer and an outer layer. The insulating layer comprises an inner lining layer, a buffer layer and an outer lining layer. The outer side of the insulating layer is longitudinally wrapped with a shielding tape, and the shielding tape is of an axial continuous fluctuating structure and comprises an outer convex part and an inner concave part; every two concave parts form a group, and the concave parts are of a high-low structure; a shielding layer is woven on the outer side of the shielding tape, the outer side of the shielding layer is filled with a filling layer, and the outer side of the filling layer is wrapped with a sheath. The pressure-bearing layer is spirally wound between the inner twisted layer and the outer twisted layer to absorb the stress of the outer twisted layer and provide a certain bending deformation space for the outer twisted layer, so that the stress borne by the outer twisted layer is transferred to the pressure-bearing layer, and the service life of the cable can be prolonged.

The application provides a cable and a preparation method thereof. The cable provided by the application comprises at least a conductor, an inner shielding layer, an insulation layer and an outer shielding layer; the inner shielding layer is arranged outside the conductor, the insulation layer is arranged outside the inner shielding layer, and the outer shielding layer is arranged outside the insulation layer; wherein the insulation layer comprises, by mass fraction, 100 parts of polypropylene, 3-5 parts of a first antioxidant; the first antioxidant is composed of antioxidant 1010, antioxidant 168 and antioxidant 330, and the mass ratio of the antioxidant 1010, the antioxidant 168 and the antioxidant 330 is (3-7):(1-3):(1-4). The cable has excellent electrical insulation performance (can be applied to a voltage level of 66 kV and above) and mechanical performance.

The utility model discloses a radiation-resistant long-life low-noise coaxial cable for a nuclear power station, which comprises a conductor formed by twisting tinned soft copper, and a wrapping semi-conductive layer, an insulating layer, an extruded semi-conductive layer, a comprehensive shielding structure, a wrapping high-temperature-resistant layer and an outer sheath are sequentially arranged outside the conductor. The tinned soft copper conductors are stranded, so that the structural stability is ensured, and oxidation is avoided; the insulating layer is made of radiation-resistant and long-service-life crosslinked polyethylene, so that the transmission performance is ensured to be stable; noise is reduced through the semi-conductive layer, and signal quality is improved; a comprehensive shielding structure is adopted, so that the electromagnetic compatibility is enhanced; the high-temperature-resistant layer is arranged to meet the high-temperature requirement of the And the outer sheath is made of a radiation-resistant polyolefin material, so that the mechanical property and the service life are ensured. Overall performance is excellent, and the system is suitable for complex environments.

Disclosed is an armored cable assembly including a core having a notched assembly tape about a plurality of conductors. A metal sheath surrounds the core.

The utility model relates to the technical field of leaky coaxial cables, in particular to a leaky coaxial cable with a high withstand voltage level, which comprises an inner conductor, an insulating layer, a longitudinal wrapping copper strip and a sheath which are sequentially arranged from inside to outside, and an inorganic ceramic insulating layer is arranged between the insulating layer and the longitudinal wrapping copper strip. According to the leaky coaxial cable with the high voltage withstanding grade, the inorganic ceramic insulating layer is arranged between the insulating layer and the longitudinally-wrapped copper strip, so that the longitudinally-wrapped copper strip can be separated from the insulating layer, damage to the insulating layer caused by burrs on the longitudinally-wrapped copper strip is avoided, and meanwhile, the inorganic ceramic insulating layer can improve the insulating effect; in addition, by controlling the thickness of the inorganic ceramic insulation layer, the insulation performance of products of various specifications can be ensured, and the insulation and high-voltage resistance of the cable is improved on the basis of the insulation and high-voltage resistance of the cable.

The invention relates to a coaxial cable (1) for transmitting electric current in a high-voltage system of a motor vehicle comprising: - an inner conductor (2); - an outer conductor (4); - an inner insulating layer (3) arranged between the inner conductor (2) and the outer conductor (4); - and an insulating cable sheath (7); wherein the outer conductor (4) is designed to be able to transmit essentially the same electrical power as the inner conductor (2).In order to enable simplified contacting of the outer conductor (4), the invention provides that the individual wires of the outer conductor (4), viewed in a cross-sectional area of ​​the coaxial cable (1) normal to a cable axis (9) of the coaxial cable (1), are divided into at least three sector bundles (5), wherein the sector bundles (5) are dimensioned such that the inner conductor (2) is positioned eccentrically to the cable axis (9) in the cross-sectional area and wherein the inner conductor (2) and the sector bundles (5) of the outer conductor (4) are stranded together.

The utility model discloses a kind of anti-torsion polyethylene sheath power cable, it is related to cable technical field, and it includes: polyethylene sheath, the inside of polyethylene sheath is provided with anti-torsion layer, the anti-torsion layer includes TPE spiral column, the anti-torsion layer is connected by several elastomers between TPE spiral column, the elastomer includes TPE elastic column, TPE elastic column is annularly spaced distribution and is arranged on TPE spiral column, the outside of TPE spiral column is provided with polyurethane cover, several cavities that melt with TPE elastic column are opened on the outer wall of polyurethane cover, the inside of the anti-torsion layer is provided with isolation layer, the inside of the isolation layer is provided with around tape layer. The reinforcing core of existing cable is located in the outer groove of fixed layer, and the problem that the overall and internal fixed layer connection strength is poor is solved by the pressing fixation of external heat insulation layer.

A power cable includes from inside to outside: a conductor; an insulation system having an inner semiconducting layer, an insulation layer, and an outer semiconducting layer; a metallic water blocking layer including a first axial section, a second axial section, and an intermediate axial section arranged between the first axial section and the second axial section and made of a lead-free metal material which is different from a first metal material of at least one of the first axial section and the second axial section. The intermediate axial section is joined thermally along its entire inner or outer perimeter with each of the first axial section and the second axial section to obtain watertight connections. The lead-free metal material has a lower yield strength than the first metal material.

The utility model discloses an anti-wear coaxial cable, which belongs to the technical field of power cables and comprises a cable body, a plurality of protection assemblies are mounted on the outer side of the cable body, each protection assembly comprises a fixing ring fixedly sleeved on the periphery of the cable body, a plurality of spherical grooves are arranged on the outer wall of each fixing ring, and rotating balls are mounted in the spherical grooves. The cable body comprises a conductive copper wire, a wrapping layer, a metal shielding layer and an outer sheath which are sequentially arranged from inside to outside. When the cable is placed on the ground, the rotating ball below the cable body is in contact with the ground, so that when the cable is dragged, the rotating ball rotates in the spherical groove, on one hand, the outer belting layer can be prevented from being abraded, the service life of the cable can be prevented from being influenced, on the other hand, the dragging force can be reduced, and the service life of the cable can be prolonged. And a plurality of bent limiting strips are arranged on the outer side of the conductive copper wire, and the limiting strips are embedded into the inner wall of the wrapping layer, so that the conductive copper wire is prevented from being stripped from the wrapping layer when the cable is pulled.

The utility model relates to the technical field of cables, in particular to a high-flame-retardant fireproof power cable, which comprises a conductor core, a mica tape fireproof layer, a ceramic composite insulating layer, a flame-retardant filling layer, a metal composite shielding layer, a flame-retardant wrapping layer and a flame-retardant sheath layer which are sequentially arranged from inside to outside, and the two layers of mica tapes are bonded through a high-temperature-resistant adhesive. The high-flame-retardancy fireproof power cable has the advantages that the mica tape fireproof layer of the high-flame-retardancy fireproof power cable adopts a double-layer staggered and overlapped wrapping structure, and a high-temperature-resistant adhesive is combined, so that a compact insulation barrier is formed at high temperature, and the erosion of flame to the conductor cores is effectively delayed; meanwhile, the ceramic composite insulating layer is made of a ceramic high polymer material, can be quickly sintered into a hard ceramic body in case of fire, and has a synergistic effect with the mica tape fire-resistant layer to doubly block high temperature and oxygen permeation, so that the cable can still maintain long-time power-on capability under the fire condition, and the fire resistance is far better than that of a common fire-resistant cable.

Electrical cables are disclosed can include at least one electrical conductor, an inner electrical insulator that surrounds the at least one electrical conductor, and an electrical shield disposed about the inner electrical insulator. The electrical cables can include an electrically conductive material disposed between adjacent layers of the electrical cable. In one example, an electrical coating can be disposed in the electrical shield, for instance, in regions of overlap. Flowable electrically conductive materials are also disclosed that can flow into gaps during operation of the electrical cable.

An overhead cable for the transmission of low– voltage and medium–voltage energy and digital signals, comprising a central fiber–optic cable, surrounded by a protective covering of the central fiber–optic cable and around such protective covering of such fiber optics by at least an aluminum alloy layer for the transmission of low–voltage and medium–voltage electric power or neutral wire and the covering thereof, where at least one aluminum alloy layer comprises a 6101 aluminum alloy wire that has been heat treated, submitting the same to a temperature within a range of 260 and 300°C and a treatment process for the aluminum alloy drawn wire.

The present disclosure relates to a coaxial cable for nuclear power plants, and more specifically, relates to a coaxial cable for nuclear power plants, which includes an inner conductor arranged at a center of a cable, an insulating layer arranged in a form of surrounding an outer periphery of the inner conductor, and formed of a foaming material forming many porous cells, and a sheath layer arranged in a form of surrounding an outer periphery of the insulating layer. Activation energy of the insulating layer is within a range of 2.06 eV to 2.84 eV. Accordingly, it is possible to provide the coaxial cable for nuclear power plants which can maintain a certain level of performance even after the elapse of a specified lifespan.

This invention relates to a rare-earth aluminum alloy coaxial cable for equipment with a rated voltage of 0.6 / 1KV. It includes an inner conductor, an inner insulation layer structure, an outer sheath, an outer conductor, and a filler layer structure. The inner conductor is a rare-earth aluminum alloy conductor. The inner insulation layer structure consists of a first inner insulation layer and a second inner insulation layer located outside the inner conductor, with a shielding layer between the first and second inner insulation layers. Silicon carbide rare-earth aluminum alloy monofilaments are wound around the inner conductor. This cable forms the inner and outer conductors by twisting silicon carbide rare-earth aluminum alloy monofilaments wound around the inner conductor, and a second independent stranded unit is formed in the outer conductor by unidirectional winding. This allows the outer conductor to have high tensile strength and adapt to bending requirements. It meets the high-voltage pulse power technology requirements of equipment and can satisfy instantaneous current carrying capacity of hundreds of thousands of amperes. It increases the high-temperature strength and creep resistance of the aluminum alloy, improving the thermal stability, strength, and heat resistance of the aluminum alloy cable.

The utility model relates to the technical field of cables, in particular to a high-performance copper-based graphene coaxial cable, which comprises a connector I, a polyvinyl chloride protective sleeve and a connector II, and is characterized in that a silica gel strip, an aramid fiber sleeve, a copper foil sleeve, a foam polyethylene sleeve and a copper wire are sequentially mounted on the inner side of the polyvinyl chloride protective sleeve; a first connector is installed at the bottom of the polyvinyl chloride protective sleeve, and a second connector is installed at the top of the polyvinyl chloride protective sleeve. The utility model has the advantages that the tensile property of the copper wire is improved, and the copper wire is prevented from being pulled to influence signal transmission.

The utility model belongs to the technical field of high-voltage cables, and discloses an ultrahigh-voltage coaxial cable. The ultrahigh-voltage coaxial cable comprises an inner conductor, an insulating layer, an outer conductor, a wrapping tape and an outer sheath, both the inner conductor and the outer conductor are formed by twisting six-category soft copper wires, the diameter of each six-category soft copper wire is 0.293 mm, the inner conductor comprises 37 first independent twisting units, each first independent twisting unit comprises 60 six-category soft copper wires, and the insulating layer is arranged between the outer conductor and the outer sheath. The outer conductor comprises 28 second independent stranded units which are wound in the same direction, and each second independent stranded unit comprises 80 category 6 soft copper wires. According to the ultrahigh-voltage coaxial cable, the inner conductor and the outer conductor are formed by twisting the six types of soft copper wires, and the outer conductor is arranged in the same-direction winding mode, so that the outer conductor can have high tensile strength and can meet the bending requirement. Meanwhile, the sectional area of the inner conductor also meets the technical requirements of ultrahigh-voltage pulse power, and the instantaneous current-carrying capacity of hundreds of thousands of amperes can be met.

The present application provides a coaxial cable which maintains stable high-frequency transmission performance and has a hollow core with improved side pressure strength compared with the existing structure. In the hollow core (1) constituting the coaxial cable (10), the inner annular portion (2) insulatingly covering the inner conductor (12), the plurality of rib portions (3) extending radially from the inner annular portion (2), and the outer annular portion (4) connected to the outer ends of the rib portions (3) are an integral structure of thermoplastic resin, have three or more void portions (5) surrounded by the inner annular portion (2), the rib portions (3), and the outer annular portion (4), the outer side reinforcing portions (7) are formed on both sides of the outer ends of the rib portions (3), and the size ratio of the minimum value (W1) of the rib width of the rib portions (3) to the maximum value (W2) of the rib width of the rib portions (3) is in the range of 1:1.6 to 1:3.0.

The present invention relates to a direct-current power cable system capable of alleviating an electric field in a portion where space charges excessively accumulate inside a sleeve member of an ultra-high voltage direct-current power cable system, thereby preventing or minimizing electric field distortion and insulation breakdown of a cable joint box due to local electric field concentration.

This utility model discloses a combined coaxial cable, including a cable, signal line, audio line, power line, and protective sheath. The cable, signal line, audio line, and power line are all housed within the protective sheath. The cable is positioned at the center of the protective sheath's cross-section, while the signal line, audio line, and power line are positioned at three equal points on the outer periphery of the cable. The gaps between the signal line, audio line, and power line are filled with flexible material. The cable includes a center conductor, an insulation layer, an inner shielding layer, an inner sheath, an outer shielding layer, and an outer sheath, arranged radially from the inside out. This utility model enhances the cable's shielding effect and allows for simultaneous transmission of digital signals, signal feedback or control, audio information, and power transmission. Users find the coaxial cable installation convenient and aesthetically pleasing after installation.

The present invention relates to a low-voltage or medium-voltage cable for outdoor use. It comprises a cable core and an outer sheath radially surrounding it, the cable core containing at least one conductor, an insulation system surrounding it, and optionally a metallic shield surrounding the insulation system. The outer sheath has at least a first layer and a second layer, the second layer being arranged at a greater radial distance from the cable core than the first layer, the first layer of the outer sheath containing a first polymer base material selected from the group consisting of PE-LLD (linear low-density polyethylene) and PE-LD (low-density polyethylene) or a mixture thereof and at least 15 wt.% of a filler having a density of 2.5 to 3.0 g / cm³, and the second layer of the outer sheath containing a second polymer base material comprising at least 90 wt.% of a filler having a density of 2.5 to 3.0 g / cm³.% PE-HD (high-density polyethylene) is contained, with this second layer having a thickness of 20% to 50% of the total thickness of the outer shell.

A conductor (1, 10) for conducting electric current has along its length (L) at least two main sections (2, 2', 3, 3', 18, 19, 20) comprising at least a first main section (2, 2', 18) and a second main section (3, 3', 19) and at least one transposing junction (4, 4', 21) connecting adjacent ones of the main sections (2, 2', 3, 3', 18, 19). The conductor (1, 10) comprises several partial conductors (7, 8, 15, 16, 17) comprising at least a first partial conductor (7, 15) and a second partial conductor (8, 16), wherein in the first main section (2, 2', 18), the first partial conductor (7, 15) has an outer diameter(d1, d2, d3) which is larger than an outer diameter (d1, d2, d3) of the second partial conductor (8, 16) and, in the second main section (3, 3', 19), the second partial conductor (8, 16) has an outer diameter (d1, d2, d3) which is larger than an outer diameter (d1, d2, d3) of the first partial conductor (7, 15).

The invention relates to a self-supporting single-phase low-voltage concentric power cable and a production process, and relates to the technical field of concentric power cables, and the power cable comprises a conductor layer, an insulating layer, an isolating layer, a wire core grounding layer, a binding tape layer, an inner sheath layer, an armor layer, a buffer layer and an outer sheath layer. The wire core grounding layer comprises a signal wire core body and a grounding conductor, and the signal wire core body and the grounding conductor are arranged and wound on the isolating layer at intervals; and the plurality of sealing elements are connected with the signal wire core body, the grounding conductor, the isolating layer and the binding tape layer to form a sealing cavity for storing cooling oil. The binding tape layer and the armor layer can cooperate to support and protect an external acting force, and the cooling oil can be filled in a space among the signal wire core body, the grounding conductor, the isolation layer and the binding tape layer to realize support and protection, so that the tensile strength and compressive strength of the cable can be greatly improved.

A hybrid cable may include at least one optical fiber disposed within a buffer layer, and two conductors concentrically formed around the buffer layer. An inner conductor having a first direct current resistance may be formed around the buffer layer. An outer conductor may then be coaxially arranged around the inner conductor, and the outer conductor may have a second direct current resistance equal to or less than the first direct current resistance. A dielectric layer may be posited between the inner and outer conductors, and a jacket may be formed around the outer conductor.