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热词
    • 88. 发明授权
    • Gate valve
    • 闸阀
    • US08672295B2
    • 2014-03-18
    • US12900682
    • 2010-10-08
    • Samir DhawanJason Neal WhaleyDavid KayRandall Ferrain WeaverNeil Colin Kennedy
    • Samir DhawanJason Neal WhaleyDavid KayRandall Ferrain WeaverNeil Colin Kennedy
    • F16K3/00F16K25/00
    • F16K3/0236F16K3/0209F16K3/20
    • A gate valve comprises a valve body having an internal working fluid passage and an internal gate chamber extending transverse to the working fluid passage. In addition, the gate valve comprises a gate disposed in the internal gate chamber and movable within the gate chamber between a closed position obstructing fluid flow through the working fluid passage and an open position allowing fluid flow through the working fluid passage. Further, the gate valve comprises an internal sealing arrangement coaxially disposed in the working fluid passage and extending between the valve body and the gate to form a barrier between the internal working fluid passage and the gate chamber. The internal sealing arrangement includes a frustoconical metal sealing surface adapted to sealingly engage an opposed mating frustoconical metal sealing surface on the valve body to form a first tapered metal-to-metal seal between the sealing arrangement and the valve body.
    • 闸阀包括具有内部工作流体通道的阀体和横向于工作流体通道延伸的内部门室。 此外,闸阀包括设置在内部门室中的门,并且可在门室内在阻塞流过工作流体通道的流体的关闭位置和允许流体流过工作流体通道的打开位置之间移动。 此外,闸阀包括同轴地设置在工作流体通道中并在阀体和门之间延伸的内部密封装置,以在内部工作流体通道和门室之间形成阻挡层。 内部密封装置包括截头圆锥形金属密封表面,其适于密封地接合阀体上相对的配合截头圆锥形金属密封表面,以在密封装置和阀体之间形成第一锥形金属对金属密封。