公开(公告)号：EP0175531A3

公开(公告)日：1987-05-20

申请号：EP85306379

申请日：1985-09-09

申请人： The British Petroleum Company p.l.c.

发明人： Brookes, David Alan The British Petroleum p.l.c.

IPC分类号： F16K01/228 ,  F16K05/20

CPC分类号： F16K3/207 ,  F16K5/205

摘要： 57 An inflatable sealing element comprises:
(a) a body of elastomeric material having an internal chamber and being adapted when inflated to bear against a non-compressible surface to effect a seal, (b) a feed spigot for supplying fluid to the internal chamber of (a) to cause the latter to inflate, and (c) a rigid reinforcing member substantially filling the internal chamber of (a) when the latter is in the deflated condition. The presence of the reinforcing member ensures more accurate positioning of the internal chamber and greater uniformity of expansion of the body, thereby improving the seal. The seal is suitable for use in ball valves.

摘要翻译： 一种可膨胀的密封元件包括：（a）具有内室的弹性体材料主体，该主体在充气时适于抵靠不可压缩的表面以实现密封，（b）用于将流体供应到内室 （a）使后者膨胀，以及（c）当后者处于放气状态时，基本上填充（a）的内腔的刚性加强件。 加强构件的存在确保了内部腔室的更精确的定位和主体的更大的均匀扩张，从而改善了密封。 该密封适用于球阀。