| 摘要 |
A rotary fluid coupler includes a first fluid conduit, a second fluid conduit in fluid communication with the first fluid conduit and rotatable relative to the first fluid conduit, and a first fluid conduit/second fluid conduit seal at a joint between the first fluid conduit and the second fluid conduit. A return fluid conduit has an inlet end that receives fluid leaked through the first fluid conduit/second fluid conduit seal, and a return/joint seal that seals against leakage from the return fluid conduit to an external environment. A fluid-pressure biasing source is in communication with the return fluid conduit to move fluid away from the inlet end through the return fluid conduit, and back to a fluid source.
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