公开(公告)号：US5960811A

公开(公告)日：1999-10-05

申请号：US145664

申请日：1998-09-02

Applicant: Jeffrey Michael Partridge

Inventor： Jeffrey Michael Partridge

IPC: F16K17/40 ,  F16K31/00 ,  F16K17/14

CPC classification number: F16K31/001 ,  F16K17/40 ,  Y10T137/1624 ,  Y10T137/1632

Abstract: A sensing valve includes a flow control member and a sensor element responsive to the presence of a substance in a flow of fluid for actuating the flow control member for stopping the flow of fluid when the substance is present in the flow of fluid. The sensing valve has a housing defining an upper region having a generally horizontal flow channel from an inlet port and a lower region having a generally vertical flow channel to an outlet port. The sensor element is disposed in the horizontal flow channel, and the flow control member is disposed in the vertical flow channel. In a preferred construction, the flow control member has a conical surface engaging with a complementary conical surface of a seat, the sensor element is seated on an internal end portion of an inlet pipe, and the sensor element and the flow control member are coupled by a shaft which protrudes from the housing through a gland threaded into the housing. The extent of protrusion of the shaft indicates whether the valve is open or closed. The sensor element can be replaced by unthreading the gland without removal of the shaft or the flow control member. The sensor element, for example, is a polystyrene cylinder that dissolves in the presence of aromatic hydrocarbon.

Abstract translation: 感测阀包括流量控制构件和传感器元件，所述流量控制构件和传感器元件响应于流体流中的物质的存在，用于致动流动控制构件以在物质存在于流体流中时停止流体流动。 感测阀具有壳体，该壳体限定具有从入口端口和具有大致垂直的流动通道到出口的下部区域的大致水平的流动通道的上部区域。 传感器元件设置在水平流动通道中，并且流量控制构件设置在垂直流动通道中。 在优选的结构中，流量控制构件具有与座的互补锥形表面接合的锥形表面，传感器元件位于入口管的内部端部上，并且传感器元件和流量控制构件通过 轴从壳体通过螺纹连接到壳体中的压盖突出。 轴的突出程度表示阀是打开还是关闭。 传感器元件可以通过在不移除轴或流量控制构件的情况下使螺纹拧开而被更换。 传感器元件例如是在芳烃存在下溶解的聚苯乙烯圆筒。