| 摘要 |
A running fluid seal arrangement (10) includes a passage for receiving cable (12) with chambers (20,21 and 22). Water at a higher pressure than gas in ma in (11) is pumped via pump (26) into chamber (21) from a reservoir (27). A mixture of gas and water from the interface in the region of chamber (20) is passed to a sealed pressure vessel (28). Water therefrom can pass back to reservoir via float valve (29). Wiper seals (30,36 and 37) can also be provided.
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