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    • 43. 发明授权
    • Valve control system
    • 阀门控制系统
    • US06382585B1
    • 2002-05-07
    • US09691727
    • 2000-10-18
    • Peter PubbenScott PhillipsSandeep Munshi
    • Peter PubbenScott PhillipsSandeep Munshi
    • F16K3112
    • F16K7/17F16K31/365Y10T137/8667Y10T137/86984
    • A fluid control valve has a valve member which, on closing creates a stagnation zone between the valve member and a surface within the valve. In the stagnation zone fluid pressure is greater than it is in an adjacent constriction zone. This causes the valve to close slowly, thereby reducing the likelihood that water hammer will occur on closure of the valve. The design of the valve member also reduces resonances which can cause annoying noises and premature wear. A flow restriction chamber further slows closure of the valve. The fluid control valve may be controlled by a conventional 3-way pilot valve. Preferably the fluid control valve is used with a pilot valve according to the invention having a rocker member which, on actuation, first closes an inlet valve member and then opens an outlet valve member. The pilot valve may be used in other situations where a 3-way valve is needed.
    • 流体控制阀具有阀构件,其在闭合时在阀构件和阀内的表面之间形成停滞区。 在停滞区域中,流体压力大于相邻收缩区域中的压力。 这导致阀门缓慢关闭,从而降低了阀门关闭时水锤发生的可能性。 阀构件的设计还减少了可能导致烦人的噪音和过早磨损的共振。 流量限制室进一步减慢了阀的关闭。 流体控制阀可以由常规的三通先导阀来控制。 优选地,流体控制阀与根据本发明的先导阀一起使用,其具有摇动构件,所述摇动构件在致动时首先关闭入口阀构件,然后打开出口阀构件。 先导阀可用于需要三通阀的其他情况。