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.

公开(公告)号：US09812250B2

公开(公告)日：2017-11-07

申请号：US14738993

申请日：2015-06-15

申请人： Hitachi, Ltd.

发明人： Yasunori Ono ,  Takahide Matsuo ,  Naoya Miyamoto ,  Taku Oyama ,  Kentaro Koseki ,  Ryoji Hirobe

IPC分类号： H01F27/02 ,  H01F27/08 ,  H01F27/10 ,  H01F27/36 ,  H01F27/34

CPC分类号： H01F27/365 ,  H01F27/02 ,  H01F2027/348

摘要： While the whole weight of magnetic shields provided in a tank of a transformer is reduced, eddy current loss by magnetic flux leaked from a winding is reduced. A transformer is configured using an iron core having an iron core leg and an iron core yoke, windings wound around the iron core leg, a tank having the iron core and the windings therein, and a first magnetic shield and second magnetic shields formed by laminating silicon steel sheets inside the tank. The first magnetic shield is arranged opposite to the windings, the second magnetic shields are arranged between the first magnetic shield and the tank, and the first magnetic shield and the second magnetic shields are fixed to the tank by different support members.