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公开(公告)号：US4471187A
公开(公告)日：1984-09-11
申请号：US422372
申请日：1982-09-23
IPC分类号： H01H33/91 , H01H33/915 , H01H33/88
CPC分类号： H01H33/91 , H01H2033/888
摘要： A gas-blast switch or circuit-interrupter contains a fixed set of contacts and a movable set of contacts. Each contact set possesses an arc contact and a rated current contact coaxially surrounding the related arc contact. Operatively associated and co-movable with the movable contact set is a blast nozzle which surrounds the arc contact of such movable contact set. In the cut-on position the blast nozzle is closed by the fixed arc contact and is operatively connected with a pressure chamber which can be pressurized during a cut-off stroke. At the outflow end of at least one of the arc contacts there are arranged means in order to axially and outwardly deflect the switching gas flowing-out of such end during the cut-off stroke. The deflecting means comprise deflection hoods of essentially cup-shaped configuration which are open at their ends confronting one another and possess a base or floor portion containing a half toroidally shaped deflection surface at the peripheral edge of which there merges an essentially cylindrical portion or section. Each such cylindrical portion carries a plurality of tongues which protrude inwardly from its inner wall and which are arranged at a substantially uniform circumferential spacing from one another.
摘要翻译： 气体开关或电路断路器包含固定的一组触点和一组可移动的触点。 每个触点组具有电弧接触和额定电流触点同轴地围绕相关的电弧触点。 与可动触点组可操作地相关联并且可移动的是围绕这种可动触头组的电弧触点的鼓风喷嘴。 在切入位置，喷射喷嘴由固定的电弧触点封闭，并且可与压力室操作连接，该压力室可在切断冲程期间被加压。 在至少一个电弧触头的流出端处，布置有用于在切断行程期间轴向和向外偏转从该端部流出的开关气体的装置。 偏转装置包括基本上为杯形构造的偏转罩，它们在它们的端部彼此面对开放并且具有在其周边边缘处包含半圆环形偏转表面的基部或底板部分，其中合并基本上圆柱形的部分或部分。 每个这样的圆柱形部分承载多个从其内壁向内突出的舌片，并且彼此以大致均匀的圆周间隔布置。
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公开(公告)号：US4431887A
公开(公告)日：1984-02-14
申请号：US390391
申请日：1982-06-21
IPC分类号： H01H33/91 , H01H33/915 , H01H33/70
CPC分类号： H01H33/91 , H01H2033/888
摘要： A movable contact element is surrounded by a co-movable blast nozzle which in the cut-on position is closed by a stationary contact element which is in engagement with the movable contact element. At its inlet side the blast nozzle is flow connected with a pump chamber or compartment which can be pressurized during the cut-off stroke. This pump chamber is constructed in a jacket or shell chamber-like fashion and bounded by an inner cylinder and an outer cylinder. The inner cylinder carries the movable contact element and the outer cylinder carries the blast nozzle. Both cylinders are displaceable by means of a stationarily supported pump piston. In order to prevent any obstruction to the flow of the extinguishing gas which is effluxing out of the pump chamber during the cut-off stroke, both of the cylinders are solely connected with one another at their ends facing away from the blast nozzle by means of a substantially ring-shaped floor member which is preferably formed at both cylinders. In the floor member there are provided at least two guide bores equipped with sliding or wiper contacts. Engaging through the guide bores is a respective electrically conductive, stationarily anchored column member supporting the pump piston.
摘要翻译： 活动接触元件由可移动的喷射喷嘴围绕，该喷嘴在切入位置由与可动接触元件接合的固定接触元件封闭。 在其入口侧，喷射喷嘴与泵室或隔室流动连接，泵室或室可在截止冲程期间被加压。 该泵室由夹套或壳室构成，并由内筒和外筒限定。 内筒承载可动接触元件，外筒承载鼓风喷嘴。 两个气缸均可通过固定支撑的泵活塞来移动。 为了防止在切断行程期间流出泵室的灭火气体的任何阻塞，两个气缸在其远离鼓风喷嘴的端部彼此独立地彼此连接，借助于 优选地形成在两个气缸上的大致环形的地板构件。 在地板构件中，设置有至少两个配有滑动或雨刮器触头的导向孔。 通过引导孔接合是支撑泵活塞的相应的导电的，静止的锚固柱构件。
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公开(公告)号：US4598188A
公开(公告)日：1986-07-01
申请号：US665714
申请日：1984-10-29
IPC分类号： H01H33/91 , H01H33/90 , H01H33/915 , H01H33/88
CPC分类号： H01H33/901 , H01H2033/906 , H01H2033/908 , H01H33/905
摘要： A movable and a stationary contact element are tubularly structured for the purpose of axially discharging arc gases. A blast nozzle is associated in a fixed reference position with respect to one of the contact elements. A narrowest location or throat of the blast nozzle is positioned forwardly of the end of this one contact element and is closed by the other contact element in the cut-on position of the gas-blast switch. An inlet of the blast nozzle communicates with a pump space bounded by a cylinder and a piston. The contact element with which the blast nozzle is associated displaceably extends through the piston. The pump space can be pressurized during a cut-off stroke. Both of the contact elements are provided with related outlets in their related regions which are remote from the free ends of the contact elements. At least in the cut-off position the outlets interconnect an interior space formed in the related contact element and a blow-out space. In order to utilize the pressure pulses occurring due to a switching arc, for supporting the pressure prevailing in the pump space, the outlet of the contact element, with which the blast nozzle is associated, opens into the pump space in the cut-on position and the distance of this outlet from the free end of the related contact element is greater than the pumping stroke between the piston and the cylinder which occurs during the cut-off stroke.
摘要翻译： 为了轴向排出电弧气体的目的，可移动的和固定的触点元件是管状构造的。 鼓风喷嘴相对于其中一个接触元件固定在参考位置。 喷嘴的最窄位置或喉部位于该一个接触元件的端部的前方，并且在气体鼓风开关的切入位置处的另一接触元件封闭。 喷嘴的入口与由气缸和活塞限定的泵空间连通。 与喷嘴相关联的接触元件可移动地延伸穿过活塞。 在切断行程期间泵的空间可以被加压。 两个接触元件在其相关区域中设置有远离接触元件的自由端的相关出口。 至少在切断位置，出口将形成在相关接触元件中的内部空间与吹出空间相互连接。 为了利用由于开关电弧而产生的压力脉冲，为了支持泵空间中的压力，与喷嘴相关联的接触元件的出口在开启位置开启到泵空间 并且该出口与相关接触元件的自由端的距离大于在截止冲程期间发生的活塞和气缸之间的泵送冲程。
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公开(公告)号：US4497991A
公开(公告)日：1985-02-05
申请号：US542581
申请日：1983-10-17
IPC分类号： H01H33/91 , H01H3/60 , H01H33/90 , H01H33/915 , H01H33/70
CPC分类号： H01H33/905 , H01H3/60
摘要： A stationary contact element and a movable contact element are coupled to a drive unit. The movable contact element is surrounded by a co-movable blast nozzle which has an inlet flow communicating with a pump chamber surrounded by a pump cylinder. The pump cylinder is conjointly movable with the blast nozzle and the pump chamber contains an extinguishing gas which is pressurizable during a cut-off stroke. The pump chamber is bounded by the blast nozzle at one of its ends and by a spring-biased pump piston at its opposite end which is displaceable to a limited extent when the pressure in the pump chamber increases. A shock absorber is operatively associated with the spring-biased pump piston. To effectively attenuate the high-frequency pressure peaks generated by the switching arc and retroacting into the pump chamber the shock absorber and the spring biasing or supporting the pump piston are arranged such that the shock absorber only responds at the end of the stroke of the spring supporting the pump piston.
摘要翻译： 固定接触元件和可动接触元件联接到驱动单元。 可动接触元件由可移动的喷嘴包围，该喷嘴具有与由泵缸包围的泵室连通的入口流。 泵筒与鼓风喷嘴联合起来，泵室包含在切断冲程期间可加压的灭火气体。 泵室在其一端处的鼓风喷嘴和在其相对端的弹簧偏压的泵活塞限定，当泵室中的压力增加时，泵室可移动到有限的程度。 减震器与弹簧偏压的泵活塞可操作地相关联。 为了有效地衰减由开关电弧产生的高频压力峰值并且追溯到泵室中，减震器和弹簧偏压或支撑泵活塞被布置成使得减震器仅在弹簧行程结束时作出响应 支持泵活塞。
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公开(公告)号：US4320270A
公开(公告)日：1982-03-16
申请号：US120391
申请日：1980-02-11
IPC分类号： H01H33/70 , H01H33/915 , H01H33/88
CPC分类号： H01H33/7023
摘要： A gas-blast switch having a movable contact element and a stationary contact element and a blast nozzle operatively associated with one of the contact elements and surrounding the same. The blast nozzle, during the course of the cut-off stroke of the gas-blast switch, is connected with a pump chamber or compartment which can be placed under pressure. The nozzle chamber is constituted by an inlet space converging towards the nozzle throat and an outlet space diverging away from such throat. In the blast nozzle there are additionally formed channels which flow communicate with the pump chamber. These channels open at an angle with respect to the nozzle axis into the nozzle chamber in order to additionally cause a blowing of the arc transversely in addition to the axial blowing of the arc in the blast nozzle. To obtain as low as possible flow losses of the extinguishing gas flowing through the channels, the latter are structured in the form of inwardly open grooves which extend essentially axially or obliquely with respect to the lengthwise axis of the blast nozzle and start from the converging inlet space or chamber. The base of the grooves extends linearly or is curved in the manner of guide buckets or blades and has a starting portion extending in the inlet space essentially parallel to the flow direction as well as an end section directed towards the nozzle axis and arranged downstream of the throat.
摘要翻译： 一种具有可移动接触元件和固定接触元件的气体吹扫开关以及与其中一个接触元件可操作地相连并且围绕它的鼓风喷嘴。 鼓风喷嘴在气体喷射开关的切断行程过程中与可以放置在压力下的泵室或隔室连接。 喷嘴室由朝向喷嘴喉部收敛的入口空间和从这种喉部分开的出口空间构成。 在喷嘴中，另外形成有与泵室连通的通道。 这些通道相对于喷嘴轴线以一定角度打开到喷嘴室中，以便除了鼓风喷嘴中的电弧的轴向吹动外，还要引起电弧横向的吹动。 为了获得尽可能低的流过通道的灭火气体的流量损失，后者被构造成向内开口的槽的形式，其基本上轴向或倾斜地相对于喷嘴的纵向轴线延伸并且从会聚入口开始 空间或室。 凹槽的底部线性地延伸或者以导向槽或叶片的方式弯曲，并且具有在入口空间中基本上平行于流动方向延伸的起始部分以及朝向喷嘴轴线的端部，并且布置在 喉。
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