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    HYDRAULIC DOWN-THE-HOLE HAMMER AND SUBSEA PILE
    1.
    发明公开
    HYDRAULIC DOWN-THE-HOLE HAMMER AND SUBSEA PILE 审中-公开

    公开(公告)号：EP4411072A2

    公开(公告)日：2024-08-07

    申请号：EP24183706.1

    申请日：2022-04-28

    申请人： Mincon International Limited

    发明人： KESKINIVA, Markku ,  PURCELL, Joseph ,  DUCK, Simon

    IPC分类号： E02D5/34

    CPC分类号： E02D5/34 ,  E02D7/06 ,  E02D7/28 ,  E02D15/08 ,  E02D27/525 ,  E21B4/14

    摘要： The present invention relates to a hydraulic down-the-hole hammer. The hammer comprises an elongate shaft and a piston having a central bore therethrough, the piston slidably mounted for reciprocal movement on the shaft and arranged to impact a percussion bit. Forward and rear drive chambers for the piston are disposed between the piston and the shaft and the forward chamber is separated from the rear chamber by an annular shoulder formed internally of the piston bore. The hammer also comprises a control valve to control reciprocation of the piston, wherein the control valve is arranged within the central bore of the piston. The hammer may be a disposable water hammer in which the piston is an outermost component of the hammer.
    The invention also relates to a method and system for installing a load-bearing element in a seabed, a method and system for installing a subsea anchor on a seabed, a subsea pile and a subsea anchor.