| 摘要 |
The remote manipulation arm includes rigid sections (12, 14, 16) kept at a temperature adapted to their operation by a device comprising a vessel (37, 38, 39) surrounding each rigid section (12, 14, 16) and connected to a high-pressure coolant gas source. The vessel comprises two chambers (92, 94), respectively at high and low pressure, connected together by a discharge hole (102) for the gas. The rigid sections (12, 14, 16) are linked together by joints surrounded by bellows seals (40, 42) supplied by coolant gas from the low-pressure chamber (94) of a vessel (37, 38, 39) adjacent to the bellows seal. The gas circulates in a closed circuit comprising the chambers (92, 94) and the bellows seals (40, 42), absorbing the heat propagated through the remote manipulation arm.
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