Anti-emanation dipping system for tank containing hydrocarbon oil, has dipping instrument with dipping rod that is introduced through dipping orifice that has sleeve with automatic closing device which opens under rod thrust

摘要

The system has a dipping instrument with a dipping rod (20) that is introduced through a dipping orifice (1) into a reservoir. The orifice has a sleeve (10) with an automatic closing device (12) that opens under rod thrust and closes when the rod is withdrawn. A deformable wall (40) of a sealing cover (4) has an upper part (44) fixed around an upper part of the instrument, and a lower part (42) fixed around an upper part of the orifice.