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1. 发明公开

EP0360460A1 Flow switches 有权
标题翻译： Strömungsschalter。
公开(公告)号：EP0360460A1
公开(公告)日：1990-03-28
申请号：EP89309056.3
申请日：1989-09-07
申请人： GENTECH INTERNATIONAL LIMITED
发明人： Templeton, Robert David King , Arnott, William Wallace
IPC分类号： H01H35/40
CPC分类号： H01H35/405
摘要： A flow switch includes a movable shuttle (30) enclosed within a bore having narrower and wider bore sections (14, 16). The shuttle (30) has a solid cylindrical portion (32) and a vaned portion (34). When there is no fluid flow from the inlet (12) to the outlet (18), the shuttle (30) rests on a part-conical portion (20) of the bore. When fluid pressure is applied at the inlet (12), the shuttle (30) is raised until the vaned portion (34) is partly within the wider bore section (16). Fluid can then flow through the spaces between the vanes in the vaned portion (34), and fluid flow is detected by the change in position of the shuttle (30). The shuttle (30) can be made magnetic, whereupon a magnetic sensing means (40) such as a magnetic reed switch can be used to detect fluid flow. This arrangement has the advantage that resistance to flow and pressure drop are minimal compared to previous designs.
摘要翻译：流动开关包括封闭在具有较窄和较宽的孔部分（14,16）的孔内的可移动梭（30）。梭子（30）具有实心圆柱形部分（32）和扇形部分（34）。当没有从入口（12）到出口（18）的流体流动时，梭子（30）搁置在孔的部分锥形部分（20）上。当在入口（12）处施加流体压力时，梭子（30）被升高直到叶片部分（34）部分地在更宽的孔部分（16）内。流体然后可以流过叶状部分（34）中的叶片之间的空间，并且通过梭子（30）的位置变化来检测流体流动。梭子（30）可以制成磁性，于是可以使用诸如磁簧开关的磁感测装置（40）来检测流体流动。这种布置具有以下优点：与先前的设计相比，耐流动性和压降是最小的。

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