公开(公告)号：US09336974B2

公开(公告)日：2016-05-10

申请号：US14414492

申请日：2013-10-09

申请人： Hitachi, Ltd.

发明人： Hideyuki Kotsuji ,  Hajime Urai ,  Makoto Koizumi ,  Makoto Hirose

IPC分类号： H01H33/91 ,  H01H33/88 ,  H01H33/78 ,  H01H33/74 ,  H01H33/02

CPC分类号： H01H33/88 ,  H01H33/74 ,  H01H33/78 ,  H01H33/91 ,  H01H2033/028

摘要： A pair of arcing contacts 3 and 5 facing each other are placed in a tank 1 to perform opening and closing operation, and a puffer cylinder 7 is coaxially provided on the circumference of one arcing contact 5. A puffer chamber 9 is comprised of the puffer cylinder 7, a fixed piston 6, and a hollow rod 8. An insulating nozzle 4 forming a space communicating with the puffer chamber 9 is provided. An exhaust tube 2 for exhausting and cooling hot gas discharged from an arc produced in the insulating nozzle 4 is provided on the circumference of the other arcing contact 3. A structure 11 for temporarily reducing the flow path area is provided on the inner circumferential surface at short of the end portion of the exhaust tube 2.

摘要翻译： 一对彼此面对的电弧触头3和5放置在罐1中以进行开闭操作，并且在一个电弧触点5的圆周上同轴地设置有一个吹气缸7.一个吹气室9由吹气 气缸7，固定活塞6和中空杆8.形成与吹气室9连通的空间的绝缘喷嘴4。 在另一个电弧接点3的圆周上设置有用于排出和冷却从绝缘喷嘴4中产生的电弧排出的热气体的排气管2.在内周面上设置用于暂时减少流路面积的结构体11 短于排气管2的端部。

公开(公告)号：US10991529B2

公开(公告)日：2021-04-27

申请号：US16647647

申请日：2018-08-03

申请人： Hitachi, Ltd.

发明人： Hideyuki Kotsuji ,  Jun Nukaga ,  Makoto Hirose ,  Takahiro Nishimura

IPC分类号： H01H33/42 ,  H01H33/70

摘要： An object is to enhance direct-current insulating performance of a gas-blast circuit breaker. The gas-blast circuit breaker includes: a pair of main contacts disposed in a gas tank to face each other and configured to operate for opening and closing a circuit; a pair of arc contacts disposed to face each other and configured to operate for opening and closing the circuit, the arc contacts being disposed coaxially with the main contacts at locations close to the centers of the main contacts, respectively; and an elastic electrically conductive material disposed on an outer surface of an insulating nozzle facing an inner surface of one of the main contacts.

公开(公告)号：US20150170858A1

公开(公告)日：2015-06-18

申请号：US14414492

申请日：2013-10-19

申请人： Hitachi, Ltd.

发明人： Hideyuki Kotsuji ,  Hajime Urai ,  Makoto Koizumi ,  Makoto Hirose

IPC分类号： H01H33/88

CPC分类号： H01H33/88 ,  H01H33/74 ,  H01H33/78 ,  H01H33/91 ,  H01H2033/028

摘要： A pair of arcing contacts 3 and 5 facing each other are placed in a tank 1 to perform opening and closing operation, and a puffer cylinder 7 is coaxially provided on the circumference of one arcing contact 5. A puffer chamber 9 is comprised of the puffer cylinder 7, a fixed piston 6, and a hollow rod 8. An insulating nozzle 4 forming a space communicating with the puffer chamber 9 is provided. An exhaust tube 2 for exhausting and cooling hot gas discharged from an arc produced in the insulating nozzle 4 is provided on the circumference of the other arcing contact 3. A structure 11 for temporarily reducing the flow path area is provided on the inner circumferential surface at short of the end portion of the exhaust tube 2.

摘要翻译： 一对彼此面对的电弧触头3和5放置在罐1中以进行开闭操作，并且在一个电弧触点5的圆周上同轴地设置有一个吹气缸7.一个吹气室9由吹气 气缸7，固定活塞6和中空杆8.形成与吹气室9连通的空间的绝缘喷嘴4。 在另一个电弧接点3的圆周上设置有用于排出和冷却从绝缘喷嘴4中产生的电弧排出的热气体的排气管2.在内周面上设置用于暂时减少流路面积的结构体11 短于排气管2的端部。