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1. 发明授权

US4300373A Well Christmas tree guard apparatus 失效
标题翻译：好圣诞树保护装置
公开(公告)号：US4300373A
公开(公告)日：1981-11-17
申请号：US7355
申请日：1979-01-29
申请人： Walter M. Camos , William L. Doize
发明人： Walter M. Camos , William L. Doize
IPC分类号： E21B33/03 , F16B41/00
CPC分类号： F16B41/007 , E21B33/03 , Y10S70/56 , Y10S70/57 , Y10T70/5566 , Y10T70/5628 , Y10T70/5867
摘要： An oil or gas well Christmas tree guard apparatus provides an annular guard body which is protectively secured about a bolted flanged connection of the well Christmas tree, the guard so placed forming an envelope about the flanged connection and preventing access by a thief to the bolts and thus discouraging removal of the bolts from the bolted connection. The protective guard body thus prevents removal of the Christmas tree from its location at the well head by theft denying access to the bolted connection which flanges the Christmas tree to the remainder of the well. In the preferred embodiment the guard body provides a pair of annular shroud halves which are hingedly connected allowing them to be pivotally moved from an outer position allowing removal from the flanged connection to an inner closed operative position providing an overall annular guard body which is latched into position about the desired bolted connection. The guard body hinge as well as the latch structure can be protectively covered by a connected shroud or housing about the latch structure, or the hinge respectively.
摘要翻译：石油或天然气圣诞树保护装置提供环形防护体，其保护性地围绕井圣诞树的螺栓连接的法兰连接固定，护罩被置于围绕法兰连接部分形成信封，并防止小偷进入螺栓和从而阻止螺栓从螺栓连接中移除。因此，保护性防护体防止圣诞树从其位于井口的位置通过盗窃来取消，不允许进入螺栓连接，将圣诞树法兰连接到井的其余部分。在优选实施例中，防护体提供一对环形护罩半部，其铰接连接，允许它们从外部位置枢转运动，允许从凸缘连接移除到内部闭合的操作位置，从而提供整体环形防护体，关于所需的螺栓连接的位置。防护体铰链以及闩锁结构可以分别由围绕闩锁结构或铰链的连接的护罩或壳体保护性地覆盖。

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