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    • 1. 发明授权
    • Valve leakby diagnostics
    • 阀门泄漏诊断
    • US08887549B2
    • 2014-11-18
    • US12527660
    • 2007-02-19
    • Jay J. MendelsonChristopher A. MazzaScott AmsbaughGary Francis ConnerEdward T. Fisher
    • Jay J. MendelsonChristopher A. MazzaScott AmsbaughGary Francis ConnerEdward T. Fisher
    • G01F25/00G01F15/00F17D5/06
    • G01F15/005F17D5/06Y10T137/7759
    • A method is disclosed for determining leakby in a flow controller (100) comprising a flow sensor (102), a flow control valve (106) and electronics (104). The electronics are coupled to the flow sensor, the flow control valve and configured to adjust the flow control valve in response to the signal of the flow sensor indicating the flow rate of the material such that a set flow rate of material through the flow controller is maintained. The steps of the method comprise determining (302) a zero drift (Qdrift) value for the flow sensor (102). Determining (304) a flow rate (Qflow) through the flow controller (100) when the control valve (106) is in the fully closed position. And determining (306) the leakby through the flow controller (100) where the leakby is equal Qflow-Qdrift.
    • 公开了一种用于在包括流量传感器(102),流量控制阀(106)和电子设备(104)的流量控制器(100)中确定泄漏的方法。 电子设备耦合到流量传感器,流量控制阀并且被配置为响应于流量传感器的信号来调节流量控制阀,该信号指示材料的流量,使得通过流量控制器的材料的设定流速为 保持。 该方法的步骤包括确定(302)流量传感器(102)的零漂移(Qdrift)值。 当控制阀(106)处于完全关闭位置时,确定通过流量控制器(100)的流量(Q flow)(304)。 并且通过所述流量控制器(100)确定(306)所述泄漏,其中所述泄漏等于Qflow-Qdrift。