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    Eccentric ball type valve
    31.
    发明授权
    Eccentric ball type valve 失效
    偏心球型阀

    公开(公告)号：US4164343A

    公开(公告)日：1979-08-14

    申请号：US832167

    申请日：1977-09-12

    申请人： Heinz Graebner

    发明人： Heinz Graebner

    IPC分类号： F16K5/20 ,  F16K5/06

    CPC分类号： F16K5/204 ,  F16K1/24 ,  Y10T137/6038 ,  Y10T29/49421

    摘要： A ball type valve for high pressure lines is designed so that the spherical valve member is offset from the centerline of the valve stem in such a manner that the spherical valve member in the open position has a cylindrical fluid passage in parallel alignment with the flow axis of the inlet and outlet passages, but in the closed position is transversely disposed across the valve chamber so that the cylindrical flow passage is perpendicular to the flow axis of the inlet and outlet passages. Due to the eccentric placement of the valve stem onto the spherical valve member, and the eccentric placement of the bore of the bonnet in which the valve stem rotates relative to the centerline of the bonnet, and the eccentric placement of the bonnet opening relative to the centerline of the inlet and outlet passages, the spherical valve member rotates in an arc from open position to closed position so as to approach the valve seat tangentially with a wiping motion and at an angle of approach so that the spherical valve member is self-locking. Further, the design of the valve is such that in open position, the surface of the spherical valve member engages the wall of the valve chamber to prevent further rotation. This eliminates the need for an external stop and prevents rotation of the spherical valve member beyond the full open position.

    摘要翻译： 设计用于高压管线的球形阀，使得球形阀构件从阀杆的中心线偏移，使得处于打开位置的球形阀构件具有与流动轴线平行对准的圆柱形流体通道 的入口和出口通道，但在关闭位置横向设置在阀室两侧，使得圆柱形流动通道垂直于入口和出口通道的流动轴线。 由于阀杆偏心地放置在球形阀构件上，以及阀杆的孔的偏心放置，阀杆相对于阀盖的中心线旋转，并且阀盖开口相对于 入口和出口通道的中心线，球形阀构件从打开位置旋转到闭合位置，以便以擦拭运动和接近角度切向地接近阀座，使得球形阀构件是自锁的 。 此外，阀的设计使得在打开位置，球形阀构件的表面接合阀室的壁以防止进一步旋转。 这消除了对外部停止的需要，并且防止球形阀构件旋转超过完全打开位置。