公开(公告)号：US5997003A

公开(公告)日：1999-12-07

申请号：US788223

申请日：1997-01-27

申请人： Edwin C Turner

发明人： Edwin C Turner

IPC分类号： E21B33/00 ,  E21B33/04 ,  F16J15/08 ,  F16J15/32

CPC分类号： F16J15/3236 ,  E21B33/04 ,  F16J15/0887 ,  E21B2033/005

摘要： Methods and apparatus are described for improved sealing across an annular space between facing sealing surfaces. Methods for mechanically setting and pressure energizing sealing ring assemblies are also described. In one aspect, several sealing ring assemblies are described, each of which include an outer seal body formed of elastically deformable metal and having an annular base with a pair of legs extending from the base to form a channel. A plurality of predominately non-deformable segments are positioned between the legs. The use of segments substantially reduces detrimental hoop stress which would hinder effective setting of a seal between the inner and outer members. In preferred embodiments, the legs and the segments each present raised portions which are offset from each other. The offset arrangement of the raised portions permit the ring assembly to be mechanically set by radial spring loading through elastic deformation of portions of the seal body. The ring assembly is then further energized through increased fluid pressure within the annular space which enters the channel of the seal ring to urge the legs into tighter engagement with the inner and outer members.

摘要翻译： 描述了用于改善在相对的密封表面之间的环形空间的密封的方法和装置。 还描述了用于机械设置和增压密封环组件的方法。 在一个方面，描述了几个密封环组件，每个密封环组件包括由可弹性变形的金属形成的外部密封体，并且具有环形基部，其具有从底座延伸以形成通道的一对腿部。 多个主要不可变形的片段位于腿之间。 节段的使用大大减少了有害的环向应力，这将妨碍内部和外部构件之间的密封的有效设置。 在优选实施例中，腿部和片段各自呈现彼此偏移的凸起部分。 凸起部分的偏移布置允许环组件通过径向弹簧加载通过密封体的部分的弹性变形而机械地设定。 然后，环组件通过进入密封环的通道的环形空间内的增加的流体压力进一步激励，以促使腿部与内部构件和外部构件更紧密地接合。