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    • 93. 发明授权
    • Method and valve for controlling fluid flow, and method of servicing valve
    • 用于控制流体流动的方法和阀,以及维修阀门的方法
    • US06517049B2
    • 2003-02-11
    • US09902737
    • 2001-07-12
    • Andrew Lee Coppock
    • Andrew Lee Coppock
    • F16K300
    • F16K3/22F16K3/262Y10T137/0441
    • A gate valve for controlling fluid flow through a housing is disclosed. The gate valve includes a frusto-conical shaped internal cavity having a fluid inlet and a fluid outlet formed in the wall thereof. Fluid flow through the cavity (from inlet to outlet) is transverse to the direction of the taper of the frusto-conical cavity. A gate including a frusto-conical portion is disposed within the housing. The frusto-conical portion of the gate may be moved transversely through the fluid flow passing from the internal cavity inlet to the outlet. The frusto-conical portion of the gate is adapted to seat against the frusto-conical shaped internal cavity to block fluid flow there through. The gate does not contact the seat until the point at which all fluid flow is shut off. This reduces wear on the gate and the seat and promotes laminar flow through the valve during the process of closing the valve.
    • 公开了一种用于控制流过壳体的流体的闸阀。 闸阀包括截头圆锥形的内腔,其具有形成在其壁中的流体入口和流体出口。 流经空腔的流体(从入口到出口)横向于截头圆锥形腔的锥形方向。 包括截头圆锥形部分的门设置在壳体内。 浇口的截头圆锥形部分可横向移动通过从内腔入口流到出口的流体流。 门的截头圆锥形部分适于抵靠截头圆锥形的内部空腔,以阻止流过其的流体流动。 门将不接触座椅,直到所有流体流动被关闭为止。 这减少了在阀门和阀座上的磨损,并且在关闭阀门的过程中促进了通过阀门的层流。