Obiettivo The goal of the present project is to introduce a new technology in the cable production which allows a substantial reduction of specific energy consumption by unit produced (about 32%) as well as an important decrease of raw materials (3%) to insulation the conductors. With the new technology we can produce the round and sector shaped conductors (strands) for the medium and high voltages cables. These products are now produced using the conventional stranding machines in which the high rotating masses (i.e. the bobbins containing the single wires, plus the structure to support its) require high power to be put and kept in rotation. The new technology developed by BICC and CORTINOVIS substitutes the high rotating masses by a static feed system and introducing an innovator concept of individual preshaped of the wire that form the conductor and includes a lay plate and a rotatory die to form the conductor a rotatory capstan to pull from the conductor and a take-up with bows to contain the final drum with the conductor finished.L%The energy saving has been calculated in a total of 2759 MWH/Y based in the present production of cable, the reduction of the mass of insulation (because the lower conductor diameter and lower gap area). Furthermore the reduction of section will introduce a reduction of losses in the use of the cable by Foucault effect.In the present situation manufacture of copper and aluminium electric cables of sections between 35 mm² and 300 mm² needs of a cabling process based in "n" number of wires on a central core. Once shaped the cable by copper or aluminium, is coated by extrusion (simple, double or triple) with semiconductor /insulation.Cabling phase is carried out at world-wide level by a technology based on various partial cabling steps where a fixed central core is holded up and the number of needed wires turns, by an adequate structure of support, around the core in order to obtain the desired final configuration.In a first step, the number of wire cabled are normally 6, in the second 12 and in the third 18, with this three steps we obtain a cable of 37 wires.The main handicap that present this technology is the high electrical power necessary to turn all the wire, the coils and its support structure.The new technology replace the individual rotatory spolls by a system of pay-off formed by static coils, forming the cable in one only phase. The individual conductors are taken to a rotatory die by means of a turning capstan. This set determines the cable geometry, shape and stability of the final product.The process is done in continuous and the cable, once formed, is seized and take up by means of a system that works under the principle of double torsion modified and one stabiliser of the drawing strain. The cable is collected on a bobbin (diameter: 2000 mm) completely finished.Wires of different coils are automatically joined without the necessity of accelerating and decelerating the machine, which are periods of high energy consumption and considering that the coils have three times the capacity of the bobbins used in the present solution.The correlation between the capstan speed, the driven modified twist system and the 2000 mm bobbin to collect the cable is highly complex being a critical element of the operation of this innovative machine.The main innovative aspects that introduce the new technology are centred in:- a new static feed system of double static coils,- an innovator system of individual preshaped of the wire placed before the Lay-Plate,- the compacting ratio shall be higher than conventional system,- a new bi-tension capstan. Campo scientifico social scienceseconomics and businessbusiness and managementinnovation managementnatural scienceschemical sciencesinorganic chemistrypost-transition metalsnatural sciencesphysical scienceselectromagnetism and electronicssemiconductivitynatural sciencesmathematicspure mathematicsgeometry Programma(i) FP4-NNE-THERMIE C - Specific programme for research and technological development, including demonstration in the field of non-nuclear energy, 1994-1998 Argomento(i) 6.2 - INDUSTRY Invito a presentare proposte Data not available Meccanismo di finanziamento DEM - Demonstration contracts Coordinatore BICC GENERALE CABLE SA Contributo UE Nessun dato Indirizzo C/CASANOVA 150 08036 Barcelona Spagna Mostra sulla mappa Costo totale Nessun dato
