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    • 3. 发明授权
    • Switch mechanism
    • 开关机构
    • US5502290A
    • 1996-03-26
    • US483878
    • 1995-06-07
    • Osamu KoyanagiKunio HirasawaMasanori TsukushiYukio KurosawaTadashi SatoYouichi Ohshita
    • Osamu KoyanagiKunio HirasawaMasanori TsukushiYukio KurosawaTadashi SatoYouichi Ohshita
    • H01H33/34H01H33/56
    • H01H33/34H01H33/563
    • A switching mechanism for use e.g. in a circuit breaker of an underground electric substation has a movable rod which causes opening and closing of an electrical contact and a hydraulic operating system. The hydraulic operating system uses a hydraulic fluid which has a high flammability temperature or is incombustible. Thus, even if such fluid leaks from the hydraulic operating system, the risk of fire or explosion is minimized. The hydraulic operating system may have a sealed tank for the fluid, preferably with a variable volume expansion chamber. In a further development, the hydraulic operating system and possibly parts of the movable rod, is enclosed in a casing which is sealed and is filled with a gas which does not support combustion therein. Thus, the risk of fire or explosion is further reduced. The casing may have a variable volume expansion chamber.
    • 一种切换机制。 在地下电力变电站的断路器中具有使电触头和液压操作系统打开和关闭的活动杆。 液压操作系统使用具有高可燃性温度或不燃的液压油。 因此,即使这种液体从液压操作系统泄漏,也会使火灾或爆炸的风险最小化。 液压操作系统可以具有用于流体的密封罐,优选地具有可变体积膨胀室。 在进一步的发展中,液压操作系统和可能的可移动杆的部分被封装在密封的壳体中并且填充有不支持燃烧的气体。 因此,进一步降低了火灾或爆炸的危险。 壳体可以具有可变体积膨胀室。
    • 4. 发明授权
    • Apparatus for controlling opening and closing timings of a switching
device in an electric power system
    • 一种用于控制电力系统中的开关装置的开闭定时的装置
    • US5563459A
    • 1996-10-08
    • US613132
    • 1990-11-15
    • Yukio KurosawaHiroshi AritaKunio HirasawaTadashi Sato
    • Yukio KurosawaHiroshi AritaKunio HirasawaTadashi Sato
    • H01H33/59F02B75/02H01H9/54H01H9/56
    • H01H9/56F02B2075/027H01H9/563Y10T307/957
    • An apparatus for controlling a switching device provided for breaking or closing a power line connecting a power source to a load in an electric power system includes a switching timing control unit for controlling the timing to apply a breaking signal to said switching device in response to a breaking signal externally applied thereto so that the contacts of said switching device are opened during a period of time when the current flowing through said power line first reaches its peak value from a zero value and for controlling the timing of applying a closing signal to said switching device in response to a closing command preferably externally applied thereto so that the contacts of said switching device are closed when the voltage of said power source becomes a predetermined value depending upon whether said load is capacitive or inductive, and an operating unit for opening and closing said contacts of said switching device in response to said breaking and closing signals, respectively.
    • 一种用于控制开关装置的装置,其用于断开或关闭将电源连接到电力系统中的负载的电力线路,包括切换定时控制单元,用于响应于所述切换装置控制对所述开关装置施加断路信号的定时 在外部施加的断开信号,使得在流经所述电力线的电流首先从零值到达其峰值的时间段期间,所述开关装置的触点断开,并且用于控制将闭合信号施加到所述开关的定时 装置,其响应于优选地外部施加到其上的关闭命令,使得当所述电源的电压根据所述负载是电容性还是电感而变为预定值时,所述开关装置的触点闭合,以及用于打开和关闭的操作单元 所述开关装置的所述触点响应于所述断开和闭合信号 太好了
    • 8. 发明授权
    • Electromagnetic puffer type gas circuit breaker
    • 电磁吹风式气体断路器
    • US4211903A
    • 1980-07-08
    • US805173
    • 1977-06-09
    • Masanori TsukushiKatsuichi KashimuraOsamu KoyanagiYoshio YoshiokaKunio Hirasawa
    • Masanori TsukushiKatsuichi KashimuraOsamu KoyanagiYoshio YoshiokaKunio Hirasawa
    • H01H33/70H01H33/88H01H33/915
    • H01H33/882
    • An electromagnetic puffer type gas circuit breaker comprises two opposing puffer type gas circuit breaking units mounted on midway support means, actuating means for driving the circuit breaking units, an electromagnetic actuating unit drivingly coupled to the actuating means, and current transfer mechanism for transferring and applying the interrupting current to the electromagnetic actuating unit during a circuit breaking operation. The current transfer mechanism is located, in operative connection to the actuating means, at a point above the midway support means and in a spaced relation to the electromagnetic actuating unit. The contact surface area of the current-conducting path portion leading to the transfer mechanism is a fraction of that of another current-conducting path portion for the passage of most of the rated current. These features provide ease of inspection and replacement of the current transfer mechanism and reduces the operating force requirement of the breaker.
    • 一种电磁吹风式气体断路器包括安装在中途支撑装置上的两个相对的河豚式气体断路装置,用于驱动断路单元的驱动装置,驱动地连接到致动装置的电磁致动单元,以及用于转移和施加的电流传递机构 在断路操作期间到电磁致动单元的中断电流。 当前的传送机构位于中途支撑装置上方并以与电磁驱动单元间隔开的位置处于与致动装置有效连接的位置。 通向传送机构的导电通路部分的接触表面积是另一导流路径部分的大部分额定电流通过的一部分。 这些特征提供了便于检查和更换电流传递机构,并降低了断路器的操作力要求。
    • 10. 发明授权
    • Puffer-type gas-blast circuit breaker
    • 吹气式气体断路器
    • US4160888A
    • 1979-07-10
    • US802940
    • 1977-06-02
    • Ken-ichi NatsuiKunio HirasawaYoshio YoshiokaHiroshi Chida
    • Ken-ichi NatsuiKunio HirasawaYoshio YoshiokaHiroshi Chida
    • H01H33/91H01H33/915H01H33/70H01H33/88
    • H01H33/91
    • A puffer type gas-blast circuit breaker includes at least one interrupting unit mounted in a vessel filled with an arc-extinguishing gas of a unitary pressure. The interrupting unit comprises: a fixed contact; a movable contact movable toward and away from the fixed contact to be engaged with and to be disengaged from the fixed contact respectively, the movable contact having an axial hollow portion, wherein an arc is established between the contacts upon disengagement of the movable contact from the fixed contact; an insulating nozzle encompassing a free end portion of the movable contact and having a throat portion therein, which is substantially closed with the fixed contact; a compression chamber filled with an arc extinguishing gas; a suction chamber, wherein an arc extinguishing gas within the compression chamber is compressed and the volume of the suction chamber is enlarged upon movement of the movable contact away from the fixed contact, whereby a pressure difference between the compression chamber and the suction chamber causes the arc extinguishing gas to be directed from the compression chamber through the axial hollow portion into the suction chamber thereby to be blown against an arc produced between the fixed contact and the movable contact; and the suction chamber is brought into an open condition to or communication with a space in the vessel, simultaneously when the fixed contact is drawn out of the throat portion in the insulating nozzle.
    • 吹气式气体爆炸断路器包括至少一个中断单元,其安装在填充有单一压力的灭弧气体的容器中。 所述中断单元包括:固定触点; 可移动接触件可以朝向和远离固定触头移动以分别与固定触头接合并从固定触头脱离,所述可动触头具有轴向中空部分,其中当触动件与可动触头脱离时在触点之间建立电弧 固定接触 绝缘喷嘴,其包围可动触头的自由端部,并且在其中具有与固定触头基本上封闭的喉部; 填充有灭弧气体的压缩室; 吸入室,其中压缩室内的灭弧气体被压缩,并且当可动触头远离固定触头移动时吸入室的体积增大,由此压缩室和吸入室之间的压力差导致 灭弧气体从压缩室通过轴向中空部分引入吸入室,从而被吹送到在固定触头和可动触点之间产生的电弧; 并且当固定接触件从绝缘喷嘴中的喉部部分拉出时,吸入室进入开口状态或与容器中的空间连通。