| 摘要 |
<p>Device for sequenced injection into containers of a metered amount of cryogenic liquid, comprising a conduit (24) with a calibrated orifice (32) emerging above a seat (29) located in an enclosure (5) including a filling chamber (28) provided with a discharge tube (7) for the cryogenic liquid emerging in the free air, the said seat (29) forming the upper part of the filling chamber (28) and interacting with a movable closing-off means arranged in the filling chamber (28) and actuated by a gas flow conveyed by a supply conduit (12), the downstream end (31) of which is located in the filling chamber (28), the said supply conduit (12) being equipped with a means (13) which may or may not permit, alternately and on demand, conveyance of the said gas flow towards its downstream end, as a function of the passage of the containers under the downstream end of the said discharge tube (7). <IMAGE></p> |
