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公开(公告)号：US4945344A
公开(公告)日：1990-07-31
申请号：US123678
申请日：1987-11-23
CPC分类号： G01P13/0086 , G01F1/28 , G01P13/0033 , Y10S73/11
摘要： A flow sensor for detecting the absence of a minimum fluid flow in a sprinkler system. The fluid acts upon a vane positioned in the fluid path. Movement of the vane controls the position of a slider. The slider's surface has reflective and nonreflective ends which, in response to the vane's movement reflect or absorb light from a light emission and detection means. The voltages from the light emission and detection means are monitored for indications of the fluid flow. The sensor uses a two wire signal transmitting system.
摘要翻译： 一种流量传感器，用于检测洒水系统中最小流体流量的不存在。 流体作用在位于流体路径中的叶片上。 叶片的运动控制滑块的位置。 滑块的表面具有反射和非反射端，响应于叶片的运动反射或吸收来自发光和检测装置的光。 监测来自发光和检测装置的电压以获得流体流动的指示。 传感器使用双线信号传输系统。
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公开(公告)号：US5049860A
公开(公告)日：1991-09-17
申请号：US496662
申请日：1990-03-21
CPC分类号： G01P13/0086 , G01F1/28 , G01P13/0033 , Y10S73/11
摘要： A flow sensor for detecting the absence of a minimum fluid flow in a sprinkler system. The fluid acts upon a vane positioned in the fluid path. Movement of the vane controls the position of a slider. The slider's surface has reflective and non-reflective ends which, in response to the vane's movement, reflect or absorb light from a light emission and detection means. The voltages from the light emission and detection means are monitored for indications of the fluid flow. The sensor uses a two wire signal transmitting system.
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公开(公告)号：US5010215A
公开(公告)日：1991-04-23
申请号：US373293
申请日：1989-08-01
摘要： An electric switch actuating mechanism for use in monitoring fluid control valves such as those used in fire services controls a micro-switch (5) or electronic switch which forms part of an external supervisory circuit. The switch (5) is housed within a common housing (8) with the mechanism. The mechanism comprises a pivoting actuator (24) which is spring (27) biased to a first position and may be pivoted to a second position to actuate the switch (5) by an operator (28). The operator (28) is contacted from externally of the housing by a contact member (38) on a valve spindle (51) when the valve is in the normally open position. The actuator (24) is on a floating pivot (26) and is held in proper operating position by push-rods (36) and pins (37) which are retained in position by a lid (2) of the housing. When the lid is removed the pivot (26) moves to a position wherein movement of the operator (28) will not cause the actuator (24) to operate the switch (5).
摘要翻译： PCT No.PCT / AU88 / 00405 Sec。 371日期1989年8月1日 102（e）日期1989年8月1日PCT提交1988年10月14日PCT公布。 出版物WO89 / 03582 日期为1989年4月20日。用于监测诸如用于消防服务中的流体控制阀的电开关致动机构控制构成外部监控电路一部分的微动开关（5）或电子开关。 开关（5）通过该机构容纳在公共壳体（8）内。 该机构包括枢转致动器（24），其是弹簧（27），其被偏压到第一位置并且可以枢转到第二位置以由操作者（28）致动开关（5）。 当阀门处于常开位置时，操作器（28）从壳体的外部由阀芯（51）上的接触构件（38）接触。 致动器（24）位于浮动枢轴（26）上，并通过推杆（36）和销（37）保持在适当的操作位置，所述推杆（36）和销（37）由壳体的盖（2）保持在适当位置。 当盖被移除时，枢轴（26）移动到操作者（28）的运动不会使致动器（24）操作开关（5）的位置。
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