VERY LOW TEMPERATURE FLOW SWITCH APPARATUS
    2.
    发明申请
    VERY LOW TEMPERATURE FLOW SWITCH APPARATUS 审中-公开
    极低温流量开关装置

    公开(公告)号:WO0201096A3

    公开(公告)日:2002-05-23

    申请号:PCT/US0119797

    申请日:2001-06-21

    Inventor: FLYNN KEVIN P

    CPC classification number: G01P13/0066 F16K47/10 F25B9/006 F25B41/043 F25B41/06

    Abstract: Flow in a forward direction through a check valve (202) is detected by a signaling device in parallel with the check valve and sensing the pressure differential across the check valve. The signaling device outputs an electrical signal that indicates whether or not the pressure differential across the valve is sufficient to open the valve to flow. A flow restrictor such as a capillary tube (208) is in parallel with the check valve to by-pass a small portion of flow during normal operation and to equalize pressure across the check valve inlet and outlet when the check valve is otherwise closed to flow.

    Abstract translation: 通过止回阀(202)沿向前方向的流动由信号装置与止回阀并联并检测止回阀两端的压力差。 信号装置输出一个电信号,指示阀门两端的压差是否足以打开阀门流动。 诸如毛细管(208)的限流器与止回阀平行,以在正常操作期间绕过一小部分流量,并且当止回阀以其它方式封闭流动时平衡止回阀入口和出口两端的压力 。

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