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1. 发明授权

US4989115A Surge arrester 失效
标题翻译：浪涌避雷器
公开(公告)号：US4989115A
公开(公告)日：1991-01-29
申请号：US568032
申请日：1990-08-16
申请人： Michel Bourdages , Robert Giraldeau , Guy St. Jean
发明人： Michel Bourdages , Robert Giraldeau , Guy St. Jean
IPC分类号： H01C7/12 , H01T1/15
CPC分类号： H01C7/12
摘要： Disclosed is a station or distribution surge arrester of the type comprising a single column of varistors stacked one upon the other and centrally arranged in a cylindrical chamber provided in a casing made of an insulating material. A plurality of movable props, made of a material which is both insulating and non-elastic, are used for holding the varistors in column form centrally in the chamber, even if the varistors break diametrically as is often the case during a severe thermal shock. By holding the varistors permanently at the center of the chamber, the props ensure the non-obstruction of several vertical passages around the column, which passages allow an arc created within the surge arrester to move freely toward a pressure limiting diaphragm during failure of the latter and, thereby, reduce explosion risks to a minimum. The props are advantageously secured over a base having a diameter greater than that of the varistors, by means of bolts or pins that are capable to shear at the least overheat or overpressure generated by the arc. The props are likewise preferably trapezoidal in cross-section and are arranged in such a way that the wide base of their trapezoidal cross-sectional come to rest against the periphery of the varistors, each wide base having a length such that the sum of all of the wide bases of all of the props be slightly shorter than the perimeter of the varistors.
摘要翻译：公开了一种电站或分配电涌放电器，其类型包括单个堆叠的压敏电阻柱，并且集中布置在设置在由绝缘材料制成的壳体中的圆柱形室中。多个可移动的道具由绝缘和非弹性的材料制成，用于将变阻器以柱形式保持在腔室中央，即使压敏电阻在严重的热冲击中通常是直径断开的。通过将变阻器永久地保持在室的中心，道具确保柱的几个垂直通道不受阻碍，这些通道允许在避雷器内产生的电弧在后者失效期间自由地朝向限压隔膜移动从而将爆炸危险降至最低。通过能够以至少由于电弧产生的过热或过压而剪切的螺栓或销，该道具有利地固定在直径大于压敏电阻的直径的基座上。道具同样优选为横截面为梯形，并且布置成使得其梯形横截面的宽基座抵靠压敏电阻器的周边，每个宽基座的长度使得所有所有道具的广泛基础要比压敏电阻的周长稍短。

2. 发明授权

US4827370A Enclosure for electric device, in particular for surge arrester, including a molded, electrically insulating envelope 失效
标题翻译：电气设备外壳，特别是用于避雷器，包括模制的电绝缘外壳
公开(公告)号：US4827370A
公开(公告)日：1989-05-02
申请号：US136828
申请日：1987-12-22
申请人： Guy St-Jean , Andre Hamel , Michel Bourdages , Daniel Dumont
发明人： Guy St-Jean , Andre Hamel , Michel Bourdages , Daniel Dumont
IPC分类号： H01B17/26 , H01B17/46 , H01C7/12 , H01T1/15 , H01T4/04 , H02H9/04
CPC分类号： H01T4/04 , H01C7/12
摘要： An enclosure for electric device, in particular for surge arrester, comprises an outer, cylindrical envelope and an inner wall both made of electrically non conducting materials. One of the ends of the envelope is closed while the other is open. An electrode with a principal portion inside the enclosure extends through the envelope and projects outside the latter. Bolt anchors are used for fixing the enclosure on a mechanical support and for mounting a closure device on the open end of the envelope. The material constituting the inner wall is impervious to humidity and protects the envelope against breaking thereof by thermal shock caused for example by the production of an electric arc within the enclosure, while the material constituting the cylindrical envelope is a synthetic insulating material capable of withstanding a high mechanical tension. The envelope is molded on the inner wall and around the electrode and the bolt anchors, whereby the inner wall and the electrode are integrated to the envelope, and the bolt anchors are fixedly attached to the synthetic insulating material.
摘要翻译：用于电气设备的外壳，特别是用于电涌放电器的外壳包括外部圆柱形外壳和内壁，均由非导电材料制成。信封的一端封闭，另一端打开。外壳内部具有主要部分的电极延伸穿过信封，并在外部延伸出来。螺栓锚固件用于将外壳固定在机械支架上，并用于将封闭装置安装在信封的开口端。构成内壁的材料不受湿度影响，并且通过例如通过在外壳内产生电弧而引起的热冲击来保护外壳免受其破裂，而构成圆柱形外壳的材料是能够承受机械张力高。信封被模制在内壁上并围绕电极和螺栓锚固，由此将内壁和电极整合到外壳中，并且螺栓锚固件固定地连接到合成绝缘材料上。

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