公开(公告)号：US3909501A

公开(公告)日：1975-09-30

申请号：US46862874

申请日：1974-05-09

Applicant: INT STANDARD ELECTRIC CORP

Inventor： JOHNSEN JOHN NORMANN

IPC: H01B5/10 ,  H01B7/29 ,  H01B7/42 ,  H01B9/06 ,  H02G15/20 ,  H01B7/34

CPC classification number: H01B7/29 ,  H01B5/10 ,  H01B7/428 ,  H01B9/0611

Abstract: The conductor cross-section of hollow power cable is changed in accordance with varying heat conductivity conditions along the line. The hollow inner section is decreased in diameter by adding conducting material to provide increased internal heat conductivity in areas of low external heat conductivity. The outer diameter remains constant. One variation uses a smaller diameter helical conductor to support added outer wire conductors. Another type uses an inner perforated pipe of different diameters and added layers of profiled wire conductors. The transition is graded to avoid sudden changes. The hollow inner duct may be filled with a coolant such as oil.

Abstract translation: 中空电力电缆的导体横截面根据线路上不同的导热条件而改变。 通过添加导电材料，中空内部部分的直径减小，以在外部热导率低的区域提供增加的内部导热性。 外径保持恒定。 一个变型使用较小直径的螺旋导体来支撑外加的导线导体。 另一种类型使用不同直径的内穿孔管，并增加成型线导体的层。 过渡阶段是为了避免突然变化。 中空的内部管道可以填充有诸如油的冷却剂。

公开(公告)号：US3666879A

公开(公告)日：1972-05-30

申请号：US3666879D

申请日：1970-10-20

Applicant: INT STANDARD ELECTRIC CORP

Inventor： HIRSCH CHRISTIAN WORM ,  JOHNSEN JOHN NORMANN

IPC: H01B5/08 ,  H01B7/14 ,  H01B7/30 ,  H01B9/00

CPC classification number: H01B9/006

Abstract: The geometric dimensions and power losses of a power cable are maintained constant along its length, notwithstanding changing ambient thermal conditions. This is made possible by changing the conductor material at different locations, for example, copper to aluminum, having different thermal resistivity. The sections of different conductor material are joined by conventional techniques such as welding, soldering, etc. Copper is used at the ends to simplify splicing.

Abstract translation: 电力电缆的几何尺寸和功率损耗沿着其长度保持恒定，尽管改变了环境热条件。 这可以通过改变具有不同热阻率的不同位置处的导体材料，例如铜到铝。 不同导体材料的部分通过诸如焊接，焊接等的常规技术连接。在端部使用铜来简化接合。