73results 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 the technical field of cable preparation, in particular to a superconducting semi-rigid cable made of high-purity aluminum and a preparation method thereof.The method comprises the steps that the high-purity aluminum is adopted as an inner conductor, and the inner conductor is preprocessed; coating the surface of the pretreated inner conductor with a PTFE mixture by using a pushing machine at normal temperature to obtain a normal-temperature pushing core wire; the qualified normal-temperature pushing core wire is wound on a cable reel and then placed in a vacuum high-temperature furnace to be subjected to vacuum sintering so as to obtain an inner conductor wrapped with an insulating layer; and the inner conductor wrapped with the insulating layer penetrates into the processed pure aluminum outer conductor tube, and the outer conductor is wrapped with PTFE to form an outer protective sleeve. According to the invention, the performance stability of the superconducting semi-rigid cable preparation can be improved.

A capacitive power transmission cable, having at least two sets of conductive strands, the sets of strands being insulated from each other and in capacitive relationship, the one with the other: wherein the conductive strands are laid at least substantially in a multiples of six layer structure, with substantially equal numbers of strands of both sets; each layer has strands of one set alternating with strands of the other set; and the strands of the respective sets have different contrasting color.

The invention relates to the technical field of water-cooled cables, and discloses a novel coaxial water-cooled cable, which comprises an outer sheath and a sealing mechanism, and is characterized in that the sealing mechanism comprises a connecting base, a limiting locking block, a locking bar, a contact ring groove, a spring, a contact ring, a connecting cover, a second limiting locking block, a second locking bar and the like; according to the device, stable mechanical locking is achieved through double clamping connection and friction contact of the limiting locking blocks, the locking strips and corresponding parts, the spring pushes the contact ring to be attached to the protruding connecting ring to form elastic sealing, the connection stability and the sealing performance are remarkably improved, and the sealing performance is greatly improved. The inner conductor is spirally wound, the outer conductor is annularly distributed, and the inner water pipe is used for circulating water cooling, so that the synergistic performance of electric conduction and heat dissipation is greatly optimized, the multi-layer insulation structure is matched with the outer sheath for protection, the insulation and protection performance is comprehensively enhanced, and the cable is suitable for a large-current transmission scene of high-power equipment.

The utility model discloses a lightweight anti-attenuation 16-core three-layer shielding coaxial cable which comprises 16 coaxial cable cores which are arranged in a square shape and form a cable core together with a polyester staple fiber buffer core material. The coaxial cable core comprises a central conductor, a foaming FEP insulating layer, a copper-plastic composite longitudinal wrapping inner shielding layer, a tinned copper wire braided middle shielding layer, a copper-plastic composite wrapping outer shielding layer and a polyurethane coating layer, and the shielding density of the tinned copper wire braided middle shielding layer is 40-60%; a para-position type wholly aromatic copolyamide stretched fiber woven isolation net and an irradiation crosslinking high-density polyethylene outer sheath layer are sequentially coated outside the cable core. The coaxial cable has good flexibility, the shielding layer is optimized to be of a three-layer shielding structure, the attenuation resistance is enhanced, meanwhile, the copper wire consumption and the material cost are reduced, and light-weight production is achieved.

The invention relates to a power cable (20) comprising: - a hybrid conductor (21) comprising: a central portion (22) of the Litz wire type having a plurality of electrically conductive strands (23) electrically insulated from each other, a crown portion (25) having electrically conductive strands (26) not electrically insulated from each other, the thickness of the crown portion (25) being calculated to be less than or equal to a skin thickness (δ), and - an insulator (27) disposed around the hybrid conductor (21). Figure for abbreviation: Figure 5

A capacitive cable comprises: (a) a first plurality of conductors for connection to a power source, (b) a second plurality of conductors for connection to a load, and (c) a dielectric material between the first plurality of conductors and the second plurality of conductors, wherein each conductor is individually insulated, and wherein at least one of the conductors of the first plurality of conductors and at least one of the conductors of the second plurality of conductors are woven or wound into one or more bundles such that each individual conductor repeatedly transitions, along a length of the one or more bundles, between an outside of the one or more bundles and an inside of the one or more bundles. The capacitive cable can be used as both a transmission line and a return line.

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 utility model discloses a high-strength pressure-resistant anti-corrosion waterproof ultrahigh-voltage power cable, which comprises a conductor, a semi-conductive wrapping tape is wrapped outside the conductor, a conductor shielding layer, an insulating layer and an insulating shielding layer are jointly extruded outside the semi-conductive wrapping tape, and a semi-conductive buffer water-blocking tape is wrapped outside the insulating shielding layer. A quick-setting liquid rubber waterproof layer is coated outside the semi-conductive buffer water-blocking tape, an anti-impact mixed-line woven reinforcing layer is arranged outside the quick-setting liquid rubber waterproof layer, a butyl rubber water-blocking pressure-reducing layer is arranged outside the anti-impact mixed-line woven reinforcing layer, a semi-conductive buffer water-blocking composite tape is arranged outside the butyl rubber water-blocking pressure-reducing layer, and the semi-conductive buffer water-blocking composite tape is arranged outside the semi-conductive buffer water-blocking composite tape. An FEP sheath layer is extruded outside the semi-conductive buffer water-blocking composite belt, and an acrylic acid anti-corrosion paint anti-corrosion layer is arranged outside the FEP sheath layer. According to the utility model, the mechanical performance, tensile performance, flexibility, waterproof performance, corrosion resistance and the like of the cable are improved, the mechanical strength and electrical characteristics of the cable are guaranteed, the service life is prolonged, and the market demand is better satisfied.

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.

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 utility model discloses a multilayer shielding high-voltage coaxial cable, which comprises a cable core, a cable core protection layer, a first filling layer, a shielding layer, a second filling layer, an arc-shaped reinforcing block, a first insulating layer and a second insulating layer, the cable core protection layer is wrapped on the outer surface of the cable core, the first filling layer is arranged on the outer side of the cable core protection layer, and the shielding layer is arranged on the outer side of the cable core protection layer. The first filling layer is wrapped by a shielding layer, the shielding layer is wrapped by a second filling layer, the second filling layer is provided with at least two arc-shaped reinforcing blocks, the arc-shaped reinforcing blocks are tightly attached to the second filling layer, the two arc-shaped reinforcing blocks are connected through a steel wire rope, and first insulating layers are arranged on the outer sides of the arc-shaped reinforcing blocks. And a second insulating layer is arranged outside the first insulating layer. The device is reasonable in design; and the arc-shaped reinforcing blocks are deformed after being extruded so as to protect the cable.

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 invention provides a coaxial cable and a device testing apparatus which can be arranged at high density. The coaxial cable (40) is provided with a cylindrical outer conductor (45), an insulating part (44) covered by the outer conductor (45), and a plurality of inner conductors (41) arranged in the insulating part (44).

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.