| 摘要 |
A sealing system (10) for sealing a tubular conduit is described. The sealing 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 anchor 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 presses the anchor surface to maintain contact between the anchor surface and the tubular conduit. In the described embodiment, the sealing system comprises two annular seals each having a seal back-up and each being energised by means of a respective set of beam springs pressing into the back of the annular seal.
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