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    ISOLATABLE NON-SLAM PISTON CHECK VALVE
    2.
    发明公开
    ISOLATABLE NON-SLAM PISTON CHECK VALVE 审中-公开
    可分离的非SLAM活塞止回阀

    公开(公告)号：EP3221622A1

    公开(公告)日：2017-09-27

    申请号：EP15802307.7

    申请日：2015-11-18

    申请人： Saudi Arabian Oil Company

    发明人： AL-AMRI, Omar M.

    IPC分类号： F16K27/06 ,  F16K15/18

    CPC分类号： F16K5/10 ,  F16K15/02 ,  F16K15/18 ,  F16K15/188 ,  F16K27/067 ,  F16K35/04

    摘要： A valve assembly includes a valve body with a central passage, an upstream end for receiving a fluid, and a downstream end for discharging the fluid. A segment ball valve rotates between a valve open position to allow the fluid to flow through the central passage, and a valve closed position to prevent the fluid from flowing through the central passage. A check valve located within the central passage downstream from the segment ball valve is biased to prevent the fluid from traveling upstream through the central passage, and to allow the fluid to travel downstream past the check valve. A locking mechanism secures the check valve in a locked position to prevent the fluid from flowing past the check valve. A sealable cavity is located between the segment ball valve and the check valve, to contain a neutral media to achieve a double block and bleed feature.

    摘要翻译： 阀组件包括具有中心通道的阀体，用于接收流体的上游端和用于排出流体的下游端。 分段球阀在打开阀门的位置以允许流体流过中心通道和阀门关闭位置之间旋转以防止流体流过中心通道。 位于分段球阀下游的中央通道内的止回阀被偏压以防止流体通过中央通道向上游行进，并且允许流体向下游经过止回阀。 锁定机构将止回阀固定在锁定位置以防止流体流过止回阀。 分段式球阀和止回阀之间有一个可密封的空腔，以容纳中性介质以实现双重阻塞和泄放功能。