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    • 5. 发明授权
    • Tensioning arrangement for a subsea wellhead assembly
    • 海底井口总成的张紧装置
    • US07025145B2
    • 2006-04-11
    • US10482276
    • 2002-06-28
    • Robert Emmerson
    • Robert Emmerson
    • E21B29/12F16L17/00
    • E21B33/038E21B33/043
    • A pre-tensioning arrangement for inner and outer elongate concentric members includes a load member which is axially movable in an actuating direction relative to the inner member and has an outer surface which tapers in the actuating direction, a laterally expansible ring which is engaged by the load member in an inclined engagement zone during the actuating movement, and an engagement zone between the laterally expansible ring and the outer member, the engagement zones providing a mechanical advantage between the movement of the load member and movement of the outer member.
    • 用于内部和外部细长同心构件的预张紧装置包括负载构件,其可以在致动方向上相对于内部构件轴向移动,并且具有沿致动方向变细的外表面,横向可膨胀的环, 在致动运动期间在倾斜接合区域中的负载构件以及横向可膨胀环和外部构件之间的接合区域,接合区域在负载构件的运动和外部构件的移动之间提供机械优点。