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1. 发明申请

WO2006056218A1 CABLE MANUFACTURING PROCESS 审中-公开
标题翻译：电缆制造工艺
公开(公告)号：WO2006056218A1
公开(公告)日：2006-06-01
申请号：PCT/EP2004/013289
申请日：2004-11-23
申请人： PRYSMIAN CAVI E SISTEMI ENERGIA S.R.L. , DELL'ANNA, Gaia , BAREGGI, Alberto , BELLI, Sergio
发明人： DELL'ANNA, Gaia , BAREGGI, Alberto , BELLI, Sergio
IPC分类号： H01B13/14
CPC分类号： B29C47/26 , B29C47/0016 , B29C47/0023 , B29C47/025 , B29C47/065 , B29C47/265 , B29L2031/3462 , H01B13/141 , H01B13/143
摘要： The present invention concerns a process for manufacturing a cable, said cable comprising: a conductor; an inner semiconductive layer surrounding said conductor and having a thickness lower than or equal to 0.4 mm;, and an insulating layer surrounding said inner semiconductive layer. The process comprises the step of co-extruding the inner semiconductive layer and the insulating layer. Said step comprises: a) providing a first annular flow of inner semiconductive material and a second annular flow of insulating material; b) contacting the outer surface of said first annular flow and the inner surface of said second annular flow at an axial distance from the contacting point where the inner surface of said first annular flow contacts the conductor; c) selecting in combination said predetermined feeding speed and said contacting point (D), as a function of the dynamic viscosity (η) of the inner semiconductive material and of the insulating material, so that a ratio between the shear stress of the inner semiconductive layer at the radially inner wall of the extrusion die and the shear stress of the insulating layer at the radially outer wall of the extrusion die, in proximity of said contacting point, is comprised from about 0.5 to 4; d) compression extruding the insulating layer and the inner semiconductive layer onto the conductor.
摘要翻译：本发明涉及一种用于制造电缆的方法，所述电缆包括：导体; 围绕所述导体并具有小于或等于0.4mm的厚度的内部半导体层;以及围绕所述内部半导体层的绝缘层。该方法包括共挤出内部半导体层和绝缘层的步骤。所述步骤包括：a）提供内半导体材料的第一环形流和绝缘材料的第二环形流; b）使所述第一环形流的外表面与所述第二环形流体的内表面在距离所述第一环形流动体的内表面接触导体的接触点的轴向距离处接触; c）作为内半导体材料和绝缘材料的动态粘度（λ）的函数，选择所述预定进给速度和所述接触点（D）的组合，使得内部半导体的剪切应力在挤出模头的径向内壁处的层和在所述接触点附近的挤出模头的径向外壁处的绝缘层的剪切应力为约0.5至4; d）将绝缘层和内部半导体层压缩挤出到导体上。

2. 发明公开

EP1682324A1 METHOD AND PLANT FOR THE INTRODUCTION OF A LIQUID INTO A MOLTEN MASS UNDER PRESSURE 有权转让
标题翻译：方法和系统将液体注入到加压熔体
公开(公告)号：EP1682324A1
公开(公告)日：2006-07-26
申请号：EP03775806.7
申请日：2003-10-31
申请人： Prysmian Cavi e Sistemi Energia S.r.l.
发明人： BALCONI, Luca , DELL'ANNA, Gaia , BAREGGI, Alberto , BELLI, Sergio
IPC分类号： B29C45/18 , B29C47/10 , H01B13/14 , B01F5/04
CPC分类号： H01B13/14 , B29C47/0004 , B29C47/0023 , B29C47/065 , B29C47/1045 , B29C47/1063 , B29C47/26 , B29C47/28 , B29K2101/10 , B29K2101/12 , B29K2105/0005 , B29K2105/0023 , B29K2105/16 , B29K2995/0005 , B29K2995/0006 , B29K2995/0007 , B29L2031/3462
摘要： A method and plant (1) for the introduction of a liquid into a molten mass under pressure are described. Such a method and such a plant (1) are particularly but not exclusively suitable for the formation of a coating layer (5, 6, 7) on a cable element comprising at least one conductor (4), said layer (5, 6, 7) comprising an extruded thermoplastic polymer forming a continuous phase incorporating a dielectric liquid, and are useful, for example in the production of an electric cable (3) for the transportation and/or distribution of electrical power. The method comprises the steps of bringing the liquid to a predetermined pressure greater than the pressure of the molten mass; feeding the liquid into a plurality of storage tanks (12); and injecting the liquid into the molten mass at an injection pressure equal to the above-mentioned predetermined pressure by means of a plurality of injectors (13) in respective fluid communication with the plurality of storage tanks (12). Advantageously, this allows to accomplish a substantial continuity of delivery of the liquid in a technologically simple way and at low costs, while ensuring a dispersion as uniform as possible of the liquid within the molten mass.

3. 发明公开

EP1697948A1 IMPACT RESISTANT CABLE 审中-公开
标题翻译： STOSSBESTÄNDIGES卡布尔
公开(公告)号：EP1697948A1
公开(公告)日：2006-09-06
申请号：EP03819085.6
申请日：2003-12-03
申请人： Prysmian Cavi e Sistemi Energia S.r.l.
发明人： DELL'ANNA, Gaia , SCELZA, Cristiana , BELLI, Sergio , BAREGGI, Alberto
IPC分类号： H01B7/18 , H01B3/20
CPC分类号： H01B3/20 , H01B7/185 , H01B7/1875 , H01B7/189
摘要： A cable for use in a predetermined voltage class includes at least one conductor; at least one extruded insulating layer surrounding the conductor, the insulating layer being made from a non-crosslinked insulating material having at least one thermoplastic polymer and at least one dielectric liquid, the insulating layer having a thickness such as to provide a voltage gradient on the outer surface of the cable insulating layer not smaller than 1.0 kV/mm; and a protective element around the extruded insulating layer having a thickness and mechanical properties selected to provide a predetermined impact resistance capability, the protective element having at least one expanded polymeric layer, the thickness being sufficient to prevent detectable insulating layer damage upon impact of at least 25 J energy. The insulating layer thickness and the protective element thickness can be selected in combination to minimize the overall cable weight while preventing detectable insulating layer damage upon impact of at least 25 J energy.
摘要翻译：用于预定电压等级的电缆包括至少一个导体; 围绕导体的至少一个挤出绝缘层，所述绝缘层由具有至少一种热塑性聚合物和至少一种介电液体的非交联绝缘材料制成，所述绝缘层具有厚度以在所述绝缘层上提供电压梯度电缆绝缘层的外表面不小于1.0kV / mm; 以及围绕所述挤出绝缘层的保护元件，其具有被选择为提供预定抗冲击能力的厚度和机械性能，所述保护元件具有至少一个发泡聚合物层，所述保护元件的厚度足以防止至少在冲击时可检测的绝缘层损伤 25 J能量。可以组合选择绝缘层厚度和保护元件厚度，以使总体电缆重量最小化，同时防止在至少25J能量冲击时可检测的绝缘层损伤。

4. 发明授权

EP1316094B1 METHOD AND APPARATUS FOR PRE-HEATING THE CONDUCTOR ELEMENTS OF CABLES WITH EXTRUDED INSULATOR, IN PARTICULAR CONDUCTORS WITH METAL TAPE REINFORCEMENT 有权
标题翻译：预热挤包绝缘电缆梯架元素的方法和装置，尤其是头，金属乐队GAIN
公开(公告)号：EP1316094B1
公开(公告)日：2006-05-31
申请号：EP01962903.9
申请日：2001-08-02
申请人： Prysmian Cavi e Sistemi Energia S.r.l.
发明人： VEGGETTI, Paolo , DELL'ANNA, Gaia , POZZATI, Giovanni , DEL BRENNA, Marcello , SALA, Angelo
IPC分类号： H01B13/14 , B29C47/02
CPC分类号： B29C47/02 , B29C47/0016 , B29L2031/3462 , H01B13/145 , Y10T428/2933 , Y10T428/294
摘要： The method and the apparatus of the invention use preheating essentially by forced thermal convection. Particularly for conductors with metal tape reinforcement, such as for example Milliken conductors, where it has been found that the traditional magnetic-induction heating is not satisfactory since the tape reinforcement shields the conductors elements.

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