公开(公告)号：US5661842A

公开(公告)日：1997-08-26

申请号：US451298

申请日：1995-05-26

申请人： Michael Allen Faust

发明人： Michael Allen Faust

IPC分类号： G02B6/24 ,  H01R4/72 ,  H02G15/115 ,  H02G15/14 ,  H02G15/18 ,  G02B6/38

CPC分类号： H02G15/1806 ,  H01R4/72 ,  H02G15/115 ,  H02G15/14 ,  Y10S174/08

摘要： A method for providing substantial protection and insulation for submarine cable joints without utilizing costly molding and x-ray equipment. A heat shrinkable polyolefin protective covering includes an unexpanded conical transition between two expanded cylindrical portions. The unexpanded conical transition precisely locates the protective covering against a conical portion of a submarine cable jointbox. Polyamide adhesive is applied to the inside surfaces of the protective covering. During the application of heat to the protective covering, insubstantial relative movement between the conical transition portion of the protective covering and the locating portion of the jointbox allows proper alignment of the protective covering as the expanded cylindrical portions shrink and move relative to the jointbox. The diameters of the cylindrical portions of the protective covering are selected such that a nominal hoop stress is created during heating to minimize air entrapment and voids in the adhesive. Two protective coverings are overlapped to maximize the dielectric strength of the coverings, and to increase the path length for water egress into the joint.

摘要翻译： 一种为海底电缆接头提供实质性保护和绝缘的方法，而无需使用昂贵的成型和x射线设备。 热收缩聚烯烃保护罩包括两个膨胀的圆柱形部分之间的未膨胀的锥形过渡。 未膨胀的锥形过渡部将保护性覆盖物精确定位在海底电缆接头盒的锥形部分上。 将聚酰胺粘合剂施加到保护罩的内表面。 在向保护罩施加热量时，保护罩的圆锥形过渡部分和接合盒的定位部分之间的非实质性相对运动允许当扩展的圆柱形部分收缩并相对于接合盒移动时保护性覆盖物的适当对准。 选择保护罩的圆柱形部分的直径，使得在加热期间产生标称的环向应力以最小化粘合剂中的空气滞留和空隙。 重叠两个保护层以最大化覆盖物的介电强度，并增加水流入接头的路径长度。