摘要:
Apparatus and systems for applying filling compound, such as water blocking compound, and water absorbing powder to a core wire or wires of a stranded conductor or to subsequent layers of a stranded conductor, which are particularly suitable for use with a tubular strander, include a rotatable head, which may be positioned downstream of a wire strander. The core is drawn through a core passage where the filling compound is applied to the core and powder is applied to the filling compound. Strand through passages are provided through the rotatable head, for drawing the strand wires therethrough, without being coated. The strand wires are stranded about the core in a closing die. Preferably, the powder circulation circuit is a closed circuit, enabling recycling of the powder. The powder is preferably fluidized prior to its delivery to the applicator, and is withdrawn from the applicator under a slight vacuum. The rotatable head may include a filling compound applicator section and a powder applicator section, which are connected to each other so that they rotate together. Methods of applying filling compound and water absorbing powder are also described.
摘要:
A filling composition for filling the interstices between the strands of a multi-stranded conductor of an electrical cable, comprises a polymeric compound which has a 100 gram needle penetration value at 25 DEG C of from 50 to 100 tenths of a millimetre, and particles of a water-swellable material having a particle size of not more than 200 microns. The components of the composition may be used together, that is in admixture, or separately. In the latter case the interstices are filled with the polymeric component and the surfaces of the latter are dusted or coated with the particulate water-swellable component.
摘要:
To increase a ground contact area in comparison with the conventional jointing by the spot-welding or the conventional fastening by a bolt so that the resistance value at the contacting point is reduced and the voltage of the energy storage device can be effectively supplied without any drop of the voltage. Zn layer 21 or Zn alloy layer, Ni layer 22, and Sn layer 23 or Sn alloy layer are formed on a connecting terminal part 10a of a positive electrode composed of Al by plating. Accordingly, this can solder Cu negative electrode, which is composed of metal that is different species from Al, through Sn layer 23 or Sn alloy layer so that jointing strength of the Al positive electrode and the Cu negative electrode can be enhanced. Further, since the ground contact area is increased in comparison with the conventional jointing by the spot-welding or the conventional fastening by a bolt so that the resistance value at the contacting point is reduced, the voltage drop of the energy storage device by contact resistance can be reduced.
摘要:
An electrical cable (11) and a method for manufacturing the electrical cable (14) extruded thereabout, a ribbed or finned surface exterior thereto which includes a plurality of longitudinally extending ribs or fins (15) between which exist a plurality of channel regions (16) which provides self-sealing properties to the cable (11), all applied to the conductor as a combined multilayer, the inner layer (14) and outer layer (13) merging to form the fins (15) therebetween.
摘要:
In some cases, it is difficult to uniformly apply a sealant when a waterproofing treatment is applied to aligned wires. Solution In a sealant applicator 1 for applying a waterproofing treatment to a wire assembly, a plurality of wires are aligned in a line according to their diameters in a holder 4 provided on a wire laying board 3. Positioning members 21 of a main unit 2 is fitted to the holder 4. A pair of nozzles 22 are opposed to each other at the opposite sides of the aligned wires, and is caused to discharge a specified amount of the sealant by a feeding mechanism 26 while being moved in a wire alignment direction by a moving mechanism 27 and being brought closer to the wires by a relatively moving mechanism 25. This enables a variation of clearances between the wires and the nozzles to be reduced and the sealant to be uniformly applied. Effect The waterproofing treatment for the wire assembly can be simplified and speeded up.
摘要:
A filling composition for filling the interstices between the strands of a multi-stranded conductor of an electrical cable, comprises a polymeric compound which has a 100 gram needle penetration value at 25°C of from 50 to 100 tenths of a millimetre, and particles of a water-swellable material having a particle size of not more than 200 microns. The components of the composition may be used together, that is in admixture, or separately. In the latter case the interstices are filled with the polymeric component and the surfaces of the latter are dusted or coated with the particulate water-swellable component.
摘要:
A device for coating material with resin and subsequently laying the material saturated with the resin onto a surface, the device comprising a vessel (14) for retaining the resin, the vessel having a slot (38) sized and configured so that the material (16) is passable through the slot (38) after being coated with resin retained in the vessel (14), and a first (23) and a second (24) roller being arranged on either side of the slot or behind the slot (38).
摘要:
The invention relates to a method and to an apparatus for producing a submarine cable containing a number of conductors (4), in particular energy conductors (4) and/or data conductors (4), that are accommodated inside a cable-protecting pipe (5), the following method steps being carried out: a) providing the conductors (4) and the cable-protecting sheath (5) and conveying the same into a common assembly region (18); b) bringing the conductors (4) and the cable-protecting pipe (5) together; c) opening the separating slit (12) in the cable-protecting pipe (5) such that an insertion opening (16) of the open separating slit (12) is formed; e) holding the open separating slit (12) open; f) inserting the conductors (4) into the cable-protecting pipe (5) through the insertion opening (16) in the open separating slit (12); g) releasing the open separating slit (12).
摘要:
The invention relates to an electrical transport wire made of an aluminum alloy including aluminum, zirconium and unavoidable impurities, characterized in that said alloy includes at least 80 parts by weight of zirconium in the form of precipitates (Al3Zr) per 100 parts by weight of zirconium in said alloy.