公开(公告)号：US10090095B2

公开(公告)日：2018-10-02

申请号：US15485855

申请日：2017-04-12

申请人： HITACHI, LTD.

发明人： Li Lu ,  Kenichi Kawamura ,  Hiroshi Miyao ,  Hiroshi Morita ,  Satoshi Ichimura ,  Jun Nukaga ,  Shinji Fujita ,  Kohei Yamaguchi ,  Hideki Ogata ,  Masato Suzuki

IPC分类号： H01F27/06 ,  H01F27/12 ,  H01F21/12 ,  H01F27/28 ,  H01F27/32

摘要： A stationary induction electrical apparatus includes a disc winding having a structure in which a flow path for a cooling medium is provided between coils where a low voltage is generated between shield wires, an L-shaped insulation barrier is provided between coils where a high voltage is generated between the shield wires, a horizontal portion of the L-shaped insulation barrier is provided so as to closely contact an upper surface or a lower surface of the disc coil, a tip end portion in an axial direction of the L-shaped insulation barrier is provided so as to closely contact an inner surface of the disc coil which is adjacent to a pressboard insulation cylinder, and a height of the tip end portion in the axial direction is lower than a thickness of one coil.

公开(公告)号：US09947453B2

公开(公告)日：2018-04-17

申请号：US15018945

申请日：2016-02-09

申请人： Hitachi, Ltd.

发明人： Yasunori Ono ,  Akira Nishimizu ,  Naoya Miyamoto ,  Kohei Yamaguchi ,  Akira Yamagishi

IPC分类号： H01F27/10 ,  H01F21/02 ,  H01F27/12 ,  H01F27/32

CPC分类号： H01F27/12 ,  H01F27/322 ,  H01F27/323

摘要： A stationary induction electric apparatus includes an iron core having legs of core and yokes of core; windings wound around the legs of core; coolant for cooling the windings; a cylindrical insulation structure that forms a flow of the coolant around the windings; baffle members alternately provided on the inner wall side and the outer wall side of the cylindrical insulation structure; and adjustment members for constricting the flow of the coolant. The adjustment members are provided on the same side of the respective baffle members and on the respective baffle members.