Disaster activated shut-off valve
    1.
    发明授权
    Disaster activated shut-off valve 失效
    灾难性关闭阀

    公开(公告)号:US4278102A

    公开(公告)日:1981-07-14

    申请号:US22050

    申请日:1979-03-19

    CPC classification number: F16K17/366 Y10T137/0777 Y10T137/7727

    Abstract: An automatic shut-off valve is used at the inlet point of a fuel line carrying a gaseous or liquid fuel into a house or the like, the valve being adapted to terminate the flow of gas or liquid upon the experiencing of a shock or vibration by the valve as would be produced by an earthquake, with the valve head being so positioned to be actuated by a sudden surge of flow to shut the valve in the event a ruptured gas line causes a quick inordinately rapid gas or liquid flow in the system. The principle utilized to actuate the closing of the valve as a function of a certain minimum amplitude of vibration or shock is a ball weight which in normal use rests on a pedestal which in turn maintains the valve head away from the valve seat in the supply line, this ball being designed to topple from its supporting pedestal during an earthquake or other vibration, thus freeing the valve head to seat under spring tension such as to block the fluid flow.

    Abstract translation: 在将气体或液体燃料携带到房屋等中的燃料管线的入口处使用自动关闭阀,该阀适于在经历冲击或振动时终止气体或液体的流动 阀将由地震产生,其中阀头被定位成在突然的气体管线引起系统中快速过快的气体或液体流动的情况下突然的流动浪涌致动以关闭阀门。 用于致动阀门关闭的原理是振动或冲击的一定最小振幅的函数,它是一种球重,它在正常使用中位于底座上,底座又使阀头远离供应管路中的阀座 ,该球被设计成在地震或其他振动期间从其支撑基座倾斜,从而使阀头在弹簧张力下释放以阻止流体流动。

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