摘要:
The invention concerns a method for splicing ends of a first and second current carrying cables (50, 52), each cable (50, 52) comprising of a fiber containing reinforced plastic composite core (22) formed from a plurality of sections (20, 20a, 20b, 20c, 20d) and an outer highly conductive current carrying sheath (64, 66). The ends of the individual sections of the first cable (50) to be spliced are cut at staggered lengths relative to one another so that each section (20a, 20c) of the core (22) of the first cable (50) has a length different from the length of any other section of the first cable (50). The ends of the individual sections of the second cable (52) to be spliced are cut at staggered lengths relative to one another so that each section (20b, 20d) of the core (22) of the second cable (52) has a length different from the length of any other section of the second cable (52). The ends of the first cable sections (20a, 20c) are matched with corresponding ends of the second cable (52) so that the ends of the first cable sections (20a, 20c) will abut against corresponding ends of the second cable sections (20b, 20d) when all of the individual sections (20a, 20b, 20c, 20d) are abutted. Spliced ends of the individual cable sections (20a, 20b, 20c, 20d) as abutted are heated to cause a resin impregnated in the cables (50, 52) to partially liquefy and effectively flow around corresponding ends. The resin is allowed to cool and thereby permanently to bond the core sections (20a, 20c) of the first cable (50) to the core sections (20b, 20d) of the second cable (52). The invention concerns also a method for increasing the current carried between two high voltage conductor support towers. A first high voltage carrying cable suspended between the towers is removed, wherein said first cable has a steel core and a conductor surrounding the core, and the conductor comprises an outer surface diameter. Said first high voltage carrying cable is replaced with a second cable on the towers such that the second cable is suspended between the towers, wherein the second cable comprises a composite core surrounded by a conductor wherein the conductor of the second cable has an outer surface diameter that is not greater than the outer surface diameter of the conductor of the first cable and wherein the second cable carries more current than the first cable.
摘要:
A metallic glass-coated microwire (1) has controllable surface porosity. The porosity is achieved by etching the metallic glass-coated microwire or other shapes of glass-coated bodies with acid after annealing to produce a multi-phase glass coating. Porous metallic glass-coated microwires are found to make superior PCR machines, which find use in a variety of in vivo, biochemical, and chemical sensors. Advantageously, the PCR apparatus is smaller, less expensive to construct than conventional units. It readily carries out in vivo passive or active operations.
摘要:
The invention relates to a method for producing an electric conductor comprising an insulation and at least one point that is to be kept free of said insulation. According to said method, the conductor, including the points that are to be kept free, is initially surrounded by a liquid, electrically non-conducting bonding agent, above all an epoxy resin, which forms the insulation after solidifying. The conductor can also be composed of several individual wires, particularly a transposed conductor, said individual conductors being electrically isolated relative to each other and being interconnected, especially glued together, by means of the bonding agent. Using a liquid stripping agent that is based on a polyvinyl alcohol or a long-chain hydrocarbon mixture and a polysaccharide filler on the point of the conductor which is to be kept free of the insulation locally prevents the bonding agent from bonding to the conductor or the individual conductors of the transposed conductor from being interconnected by means of the unsolidified mixture. Once the entire bonding agent is hard and thus the bonding agent/stripping agent mixture has solidified, the bonding agent/stripping agent mixture can easily be removed in a mechanical manner from the treated points of the conductor.
摘要:
An electric power cable, comprising; at least one electric conductor (1); an electric insulation (2) surrounding said conductor (1) and comprising a polymer; a tubular protective sheath (3) surrounding said electric insulation (2) and acting as a water barrier that prevents water intrusion into the electric insulation (2). The cable comprises at least one density-raising element (4) of a material of higher density than the material of the protective sheath (3).
摘要:
The invention concerns a method for splicing ends of a first and second current carrying cables (50, 52), each cable (50, 52) comprising of a fiber containing reinforced plastic composite core (22) formed from a plurality of sections (20, 20a, 20b, 20c, 20d) and an outer highly conductive current carrying sheath (64, 66). The ends of the individual sections of the first cable (50) to be spliced are cut at staggered lengths relative to one another so that each section (20a, 20c) of the core (22) of the first cable (50) has a length different from the length of any other section of the first cable (50). The ends of the individual sections of the second cable (52) to be spliced are cut at staggered lengths relative to one another so that each section (20b, 20d) of the core (22) of the second cable (52) has a length different from the length of any other section of the second cable (52). The ends of the first cable sections (20a, 20c) are matched with corresponding ends of the second cable (52) so that the ends of the first cable sections (20a, 20c) will abut against corresponding ends of the second cable sections (20b, 20d) when all of the individual sections (20a, 20b, 20c, 20d) are abutted. Spliced ends of the individual cable sections (20a, 20b, 20c, 20d) as abutted are heated to cause a resin impregnated in the cables (50, 52) to partially liquefy and effectively flow around corresponding ends. The resin is allowed to cool and thereby permanently to bond the core sections (20a, 20c) of the first cable (50) to the core sections (20b, 20d) of the second cable (52). The invention concerns also a method for increasing the current carried between two high voltage conductor support towers. A first high voltage carrying cable suspended between the towers is removed, wherein said first cable has a steel core and a conductor surrounding the core, and the conductor comprises an outer surface diameter. Said first high voltage carrying cable is replaced with a second cable on the towers such that the second cable is suspended between the towers, wherein the second cable comprises a composite core surrounded by a conductor wherein the conductor of the second cable has an outer surface diameter that is not greater than the outer surface diameter of the conductor of the first cable and wherein the second cable carries more current than the first cable.
摘要:
An electric wire for an automobile, light in weight, small in diameter, and having sufficient tensile strength and good bending characteristics as compared with those of an existing electric wire for an automobile. The electric wire has a core wire section and an outer circumferential wire section. The core wire section is formed by spirally winding six element wires around one element wire, where each element wire is made of stainless steel having elongation of 30% or more and tensile strength of 920 MPa or higher and the element wires have the same diameter in the range of 0.127mm ± 10%. The circumferential wire section is formed by spirally winding twelve element wires around the core wire section, where the twelve element wires are wound close to each other in a single layer, each element wire is made of copper having tensile strength of 220 MPa or higher, and the element wires have the same diameter in the range of 0.127mm ± 10%.
摘要:
Die Erfindung betrifft ein Kabelwickelband, insbesondere für den Motorenraum eines Automobils, mit einem bandförmigen, als Verbund aus mindestens einer ersten textilen Schicht und aus einer zweiten textilen Schicht ausgebildeten Träger (3), wobei die zweite textile Schicht (2) ein Vliesstoff ist, und mit mindestens auf einer Seite des Trägers (3) aufgetragenen selbstklebenden Klebeschicht (5), die aus einem Haftklebstoff besteht. Um ein derartiges, bei der Herstellung und Montage wenig aufwändiges Kabelwickelband zu schaffen, welches Höchstwerte der Abriebfestigkeit aufweist, wird vorgeschlagen, dass die erste textile Schicht (1) ein Gewebe ist, wobei das Gewebe mindestens 20 Kettfäden je cm und höchstens 22 Schussfäden je cm aufweist und wobei das Kabelwickelband sowohl an einem Dorn mit 5 mm Durchmesser, als auch an einem Dorn mit 10 mm Durchmesser die Abriebklasse E gemäß LV 312 erfüllt.
摘要:
An electric power cable contains a core and a jacket forming the exterior of the cable. The jacket is formed by extruding a first layer and a second layer over a plurality of concentric neutral elements, substantially encapsulating these elements. At least the first layer is an expanded polymeric material, by having its density reduced through the use of a foaming agent during extrusion. The second layer, which may also be expanded, is extruded around the first layer. The expanded polymeric material makes stripping the jacket easier, minimizes indentations in the cable's insulation layers, lightens the cable, and increases the cable's flexibility.
摘要:
The invention relates to a method for producing an electric conductor comprising an insulation and at least one point that is to be kept free of said insulation. According to said method, the conductor, including the points that are to be kept free, is initially surrounded by a liquid, electrically non-conducting bonding agent, above all an epoxy resin, which forms the insulation after solidifying. The conductor can also be composed of several individual wires, particularly a transposed conductor, said individual conductors being electrically isolated relative to each other and being interconnected, especially glued together, by means of the bonding agent. Using a liquid stripping agent that is based on a polyvinyl alcohol or a long-chain hydrocarbon mixture and a polysaccharide filler on the point of the conductor which is to be kept free of the insulation locally prevents the bonding agent from bonding to the conductor or the individual conductors of the transposed conductor from being interconnected by means of the unsolidified mixture. Once the entire bonding agent is hard and thus the bonding agent/stripping agent mixture has solidified, the bonding agent/stripping agent mixture can easily be removed in a mechanical manner from the treated points of the conductor.