公开(公告)号：US09704679B2

公开(公告)日：2017-07-11

申请号：US14904193

申请日：2014-04-18

申请人： Hitachi, Ltd.

发明人： Daisuke Nomura ,  Noriyuki Yaginuma ,  Yuuji Kaneko ,  Makoto Hirose

IPC分类号： H01H33/74 ,  H01H33/70 ,  H01H33/91

CPC分类号： H01H33/91 ,  H01H33/7023 ,  H01H33/703 ,  H01H33/74 ,  H01H2205/002

摘要： A gas circuit breaker including a pair of main contacts is openable inside an insulating tank. A pair of arc contacts is arranged on the inner side of the main contacts, and a puffer cylinder has the main contacts and the arc contacts at an end. A puffer chamber is formed inside the puffer cylinder, and a puffer piston is provided on the inner periphery of the puffer cylinder. An insulating nozzle part is mounted on an end of the puffer cylinder to surround the arc contact. The insulating nozzle part includes a split nozzle base part and a split nozzle end part, and the split nozzle base part has a throat part.

公开(公告)号：US10049839B2

公开(公告)日：2018-08-14

申请号：US15504837

申请日：2015-03-04

申请人： HITACHI, LTD.

发明人： Hideaki Uchiyama ,  Noriyuki Yaginuma ,  Daisuke Nomura ,  Hiroyuki Nakamichi ,  Yuji Kaneko

IPC分类号： H01H33/56 ,  H01H33/64 ,  H02B13/045 ,  H01H71/02

摘要： A gas circuit breaker having a pair of contacts and a pair of exhaust conductors. An exhaust hole in the pair of exhaust conductors is provided with an insulation cover having an opening. The cover has a guide on an opening end on the side near the pair of contacts and an opening end on the side far from the pair of contacts respectively. The guide has an exhaust hole protective guide and a high-temperature gas passage dividing guide. A first gas flow passage is between an exhaust hole protective guide and a high-temperature gas passage dividing guide, and a second gas flow passage is between the high-temperature gas passage dividing guides. The first gas flow passage is narrower than the second gas flow passage. An end of the exhaust hole protective guide on the first gas flow passage side is projected toward the high-temperature gas passage dividing guide.

公开(公告)号：US09035729B2

公开(公告)日：2015-05-19

申请号：US14091725

申请日：2013-11-27

申请人： Hitachi, Ltd.

发明人： Daisuke Nomura ,  Masanori Tsukushi

IPC分类号： H01H9/00 ,  H02H3/02

CPC分类号： H02H3/02 ,  H01H33/16 ,  H01H33/166 ,  H01H33/38 ,  H01H33/42 ,  H01H33/70

摘要： In a gas circuit breaker with a parallel capacitor, an interrupting unit is provided inside a sealed vessel filled with an insulating gas; the interrupting unit includes fixed and movable parts. A high-voltage conductor is coupled to the movable part, and an interrupting-unit side insulating rod for moving the movable part is linked with a mover as part of an electric actuator inside an operation device case. A capacitor is electrically coupled to the interrupting unit in parallel inside the sealed vessel. A movable contact is electrically coupled to the capacitor, and the movable contact is linked with a capacitor-side insulating rod. The interrupting-unit side insulating rod or mover has an engaging part inside the case, the capacitor-side insulating rod has a retaining part located on a side of the engaging part, and the retaining part is linked with the sealed vessel by use of a closing-spring.

摘要翻译： 在具有并联电容器的气体断路器中，在填充有绝缘气体的密封容器内设置中断单元; 中断单元包括固定和可移动部件。 高压导体与可动部连接，并且用于使可动部移动的中断单元侧绝缘棒与作为电致动器的一部分的动子连接在操作装置壳体内。 电容器在密封容器内并联电连接到中断单元。 可动触点电耦合到电容器，并且可动触头与电容器侧绝缘棒连接。 中断单元侧绝缘杆或移动器在壳体内具有接合部分，电容器侧绝缘杆具有位于接合部分侧面上的保持部分，并且保持部分通过使用 闭合弹簧。

公开(公告)号：US09892875B2

公开(公告)日：2018-02-13

申请号：US15309601

申请日：2015-03-02

申请人： Hitachi, Ltd.

发明人： Daisuke Nomura ,  Noriyuki Yaginuma ,  Masanori Tsukushi

IPC分类号： H01H33/88

CPC分类号： H01H33/88 ,  H01H2033/888

摘要： An insulation rod cover is fitted to an end portion of a puffer shaft and the insulation rod cover is fitted to a circuit-breaker side coupling pin coupling between a puffer shaft and an insulation rod, thereby allowing the insulation rod cover to be held at a joint between the puffer shaft and the insulation rod. In a first half of a circuit-breaking operation, the insulation rod cover is positioned in the exhaust cylinder and the exhaust of the hot gas from the puffer shaft is suppressed to increase the pressure of an extinguishing gas to be sprayed onto the arc. In a last half of the circuit-breaking operation, the insulation rod cover is positioned in a guard cylinder to promote the exhaust of the hot gas from the puffer shaft as well as to suppress the flow of the hot gas into the insulation cylinder.

公开(公告)号：US09543095B2

公开(公告)日：2017-01-10

申请号：US14768691

申请日：2014-02-03

申请人： Hitachi, Ltd.

发明人： Yuji Kaneko ,  Noriyuki Yaginuma ,  Daisuke Nomura ,  Makoto Hirose

IPC分类号： H01H33/04 ,  H01H33/70 ,  H01H33/91 ,  H01H33/56 ,  H01H33/64

CPC分类号： H01H33/04 ,  H01H33/56 ,  H01H33/64 ,  H01H33/70 ,  H01H33/7023 ,  H01H33/7061 ,  H01H33/91

摘要： A gas circuit breaker is configured by comprising a tank filled with arc extinguishing gas, a pair of fixed side arc contact and moving side arc contact in the tank, a puffer chamber formed with a puffer cylinder including the moving side arc contact at its end and a fixed piston, and an insulating nozzle, attached to the end of the puffer cylinder, surrounding the moving side arc contact, that forms a flow channel to guide arc extinguishing gas from the puffer chamber to the contacts. A puffer cylinder 104 has a cylindrical member 104a at a breaker side end, an end of the insulating nozzle 101 is provided in the cylindrical member 104a. And the gas circuit breaker is configured by further comprising a hollow moving side main contact 102 at a breaker side end of the cylindrical member 104a, a pressing metal fitting 103 to engage an insulating nozzle 101 in the hollow part of the moving side main contact 102.

摘要翻译： 一气体断路器包括一个填充有灭弧气体的罐，一个在罐中的一个固定侧弧接触件和一个活动侧弧接触件，一个形成有在其端部包括移动侧电弧接触的吹气缸的吹气室， 固定活塞和绝缘喷嘴，其安装在吹气缸的端部，围绕可动侧弧接触，形成流动通道，以将灭弧气体从冲洗室引导至触点。 吹气圆筒104在断路器侧端部具有圆筒部件104a，绝缘喷嘴101的一端设置在筒状部件104a中。 并且，气体断路器还包括在圆筒形构件104a的断路器侧端部处的中空移动侧主触点102，压接金属配件103，以将移动侧主触点102的中空部分中的绝缘喷嘴101接合 。