-
公开(公告)号：US10128071B2
公开(公告)日：2018-11-13
申请号：US15531754
申请日：2015-09-16
申请人： HITACHI, LTD.
发明人： Masahiko Ono , Makoto Hirose , Daisuke Ebisawa , Hisashi Urasaki
摘要： Disclosed is an abrasion resistant material having low cost and excellent abrasion resistance, a puffer cylinder, and a puffer type gas circuit breaker. The abrasion resistant material includes: a base material which is formed of pure aluminum or aluminum alloy and has an unevenness structure formed on its surface; and an aluminum hydrated oxide film which is formed on the surface of the base material, wherein a surface of the aluminum hydrated oxide film is provided with an unevenness structure which is finer than the unevenness structure of the base material.
-
公开(公告)号：US11070039B2
公开(公告)日：2021-07-20
申请号：US16608410
申请日：2018-05-14
申请人： Hitachi, Ltd.
发明人： Hirokazu Furui , Jun Nukaga , Makoto Hirose
IPC分类号： H02B13/045 , H02B13/055 , H02G5/06
摘要： An insulating spacer and a gas insulation shutoff apparatus each having a high dielectric strength against adhesion of a metal foreign substance are provided without increasing size or complicating a shape of the insulating spacer. In an insulating spacer of a gas insulation shutoff apparatus including a grounded tank filled with an insulating gas, a high-voltage conductor provided within the grounded tank, and the insulating spacer supporting and fixing the high-voltage conductor within the grounded tank, the insulating spacer includes a conductor to be connected to the high-voltage conductor, an insulating structure supporting and fixing the conductor within the grounded tank, and a nonlinear resistance layer provided on a creepage surface of the insulating structure, and the nonlinear resistance layer is provided in a portion to be a high-field portion of the creepage surface of the insulating structure.
-
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
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：US20150236485A1
公开(公告)日：2015-08-20
申请号：US14421513
申请日：2013-07-19
申请人： Hitachi, Ltd.
摘要： A circuit breaker (33) formed with a sealed tank (4) having a breaker section and an operating mechanism (2) is laterally arranged in a lengthwise direction and is fixed to a frame (1), and above the circuit breaker, main bus containers (11, 12) are provided, substantially orthogonally to an axial direction of the circuit breaker (33). Operating mechanism-side working space (B) and breaker section-side working space (C) are provided respectively above the operating mechanism (2) and the sealed tank (4), and a hand hole (5) is provided on an upper surface of the sealed tank (4). A connecting pin (24) is provided in a link mechanism connecting the operating mechanism (2) and the movable contact (7), and an operating mechanism-side working hole for accessibility to the connecting pin (24) from the operating mechanism-side working space (B) is provided.
摘要翻译： 形成有具有断路器部分和操作机构（2）的密封箱（4）的断路器（33）在长度方向上横向地布置并且固定到框架（1）上，并且在断路器上方，主母线 大体垂直于断路器（33）的轴向方向设置容器（11,12）。 分别在操作机构（2）和密封箱（4）的上方设有操作机构侧工作空间（B）和断路器侧工作空间（C），在上表面 的密封罐（4）。 连接销（24）设置在连接操作机构（2）和可动触头（7）的连杆机构中，以及操作机构侧工作孔，用于与操作机构侧的连接销（24）相接触 提供工作空间（B）。
-
公开(公告)号：US10916394B2
公开(公告)日：2021-02-09
申请号：US16645667
申请日：2018-07-30
申请人： Hitachi, Ltd.
发明人： Toshiaki Sakuyama , Hajime Urai , Masanao Terada , Ryoichi Shiobara , Takahiro Nishimura , Makoto Hirose , Yuichiro Yamane
摘要： A gas circuit breaker includes a gas suppresser composed of a protruded portion which is formed on a horizontal surface facing an exhaust cylinder of a shaft guide and which forms a gap between itself and the exhaust cylinder and an enlarged portion which is adjacent to the protruded portion and where a gap to the exhaust cylinder is enlarged so that the shaft guide, which operates along an inner circumferential surface of the exhaust cylinder, which is provided to an inner circumferential portion of a movable side main conductor and is provided to outer circumferences of an exhaust shaft and an operation rod, and couples the operation rod with the exhaust shaft, is axially adjacent to a sliding member that slides along the exhaust cylinder with no space to the exhaust cylinder and suppresses discharge of heated and pressurized insulating gas.
-
公开(公告)号：US10354821B2
公开(公告)日：2019-07-16
申请号：US15900822
申请日：2018-02-21
申请人： Hitachi, Ltd.
发明人： Toshiaki Sakuyama , Ryoichi Shiobara , Hajime Urai , Makoto Hirose , Masanao Terada , Takahiro Nishimura
摘要： To provide a gas circuit breaker designed to achieve further improvement in interruption performance for a small to medium current. The gas circuit breaker according to the present invention includes: an operation mechanism 1; a heat puffer chamber 19; a machine puffer chamber 32; a release valve 34; a movable main contact 5 and movable arc contact 11; a stationary main contact 6 and stationary arc contact 12; a movable-side leading conductor 14; and a stationary-side leading conductor 15, and features: a separation cylinder 21 for radially partitioning the heat puffer chamber 19; an inner circumferential flow path 24 formed on an inner circumferential side of the separation cylinder 21; and a check valve 22 for opening or closing a communication hole 23.
-
公开(公告)号：US10256060B2
公开(公告)日：2019-04-09
申请号：US15846936
申请日：2017-12-19
申请人： Hitachi, Ltd.
摘要： Realized is a shape of a grooved cam that maximizes break performance by appropriately setting an electrode operation, with a minimum weight increase. A gas circuit breaker includes a drive side electrode and a driven side electrode which are disposed to face each other in a sealed tank, the drive side electrode having a drive side main electrode and a drive side arcing contact, the driven side electrode having a driven side main electrode and a driven side arcing contact, the drive side arcing contact being connected to an operating device, and the driven side arcing contact being connected to a double motion mechanism portion, in which the double motion mechanism portion includes a drive side connection rod that receives driving force from the drive side electrode, a driven side connection rod that is connected to the driven side arcing contact, a lever that is bent to the operating device side around a rotation axis by causing the driven side connection rod to operate in an opposite direction with respect to an operation of the drive side connection rod, and a guide that defines operations of the drive side connection rod and the driven side connection rod.
-
公开(公告)号：US10190935B2
公开(公告)日：2019-01-29
申请号：US15216736
申请日：2016-07-22
申请人： Hitachi, Ltd.
IPC分类号： G01M3/32 , H02B7/01 , H02B13/065
摘要： A gas leak detection device includes a learning section, which has a correlation between a gas temperature inside gas pressure containers and a surface temperature of the gas pressure containers in a learning period corresponding to a current value flowing in the conductor, to make database, and a diagnosis section, which extracts a gas temperature corresponding to the measured current value and the surface temperature from the learning section in a diagnosis period, corrects a gas pressure value corresponding to an arbitrary surface temperature to a gas pressure value of a reference temperature using the extracted gas temperature, and detects a leak of the insulating gas based on the corrected gas pressure value.
-
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
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：US09058947B2
公开(公告)日：2015-06-16
申请号：US13728332
申请日：2012-12-27
申请人： HITACHI, LTD.
CPC分类号： H01H33/08 , H01H33/901 , H01H2033/906 , H01H2033/908
摘要： A puffer-type gas circuit-breaker having improved interruption performance and dielectric performance, comprising: a partition wall provided in a stationary cylinder on the moving side of the circuit-breaker to form an intra-stationary cylinder space, a mechanical puffer chamber provided adjacent to one flange of the partition wall and a hot gas exhaust chamber provided on the same side as another flange of the partition wall, wherein the stationary cylinder has gas inlet holes communicated with the intra-stationary cylinder space and formed on one side relative to a virtual plane that bisects the stationary cylinder in a radial direction, gas outlet holes communicated with the intra-stationary cylinder space, and hot gas exhaust openings communicated with the hot gas exhaust chamber, further communicated with the puffer shaft flow hole after an arc is generated and formed in radial directions of the stationary cylinder and on the other side relative to the virtual plane.
摘要翻译： 一种具有改进的中断性能和介电性能的吹气式气体断路器，包括：设置在断路器移动侧的静止气缸中以形成内部静止气缸空间的分隔壁，邻近设置的机械气泡室 分隔壁的一个凸缘和设置在与分隔壁的另一个凸缘相同侧的热气体排出室，其中，静止气缸具有与内部固定气缸空间连通的气体入口孔，并相对于一侧形成在一侧 虚拟平面，其在径向方向上平分固定圆筒，与内部固定的气缸空间连通的气体出口孔，以及与热气体排出室连通的热气体排出开口，在产生电弧之后还与吹气轴流孔连通 并且在固定筒的径向方向上形成并且相对于虚拟平面形成在另一侧。
-
-
-
-
-
-
-
-
-
搜索结果
18 条记录 (耗时 0.019 秒)