发明公开
- 专利标题： Sealing assembly
- 专利标题（中）： 密封组件
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申请号： EP85306379申请日： 1985-09-09
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公开(公告)号： EP0175531A3公开(公告)日： 1987-05-20
- 发明人: Brookes, David Alan The British Petroleum p.l.c.
- 申请人： The British Petroleum Company p.l.c.
- 专利权人： The British Petroleum Company p.l.c.
- 当前专利权人： The British Petroleum Company p.l.c.
- 优先权： GB8423382 19840915
- 主分类号： F16K01/228
- IPC分类号： F16K01/228 ; F16K05/20
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.
(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.
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