| 摘要 |
A sealing system (10) for sealing a tubular conduit is described. The sealin g system includes a housing (16), with at least one annular seal (22, 24) surrounding the outer surface of the housing. The sealing system further includes at least one seal back-up (26, 25) mounted on the housing outer surface, adjacent the at least one annular seal. The at least one seal back- up has an anchor surface for engaging with the tubular conduit. Seal and anchor energising means are also provided for urging the annular seal and the ancho r surface into contact with the tubular conduit in response to an actuation force. Once energised, a first portion of the annular seal forms a contact seal with the tubular conduit and a second portion of the annular seal press es the anchor surface to maintain contact between the anchor surface and the tubular conduit. In the described embodiment, the sealing system comprises t wo annular seals each having a seal back-up and each being energised by means o f a respective set of beam springs pressing into the back of the annular seal.
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