US 12,331,889 B2
Installation for pumping cryogenic fluid and filling station comprising such an installation
Cyril Benistand-Hector, Sassenage (FR); and Martin Graser, Metzingen (DE)
Assigned to L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude, Paris (FR)
Appl. No. 18/569,915
Filed by L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude, Paris (FR)
PCT Filed May 18, 2022, PCT No. PCT/EP2022/063391
§ 371(c)(1), (2) Date Dec. 13, 2023,
PCT Pub. No. WO2022/263086, PCT Pub. Date Dec. 22, 2022.
Claims priority of application No. 2106233 (FR), filed on Jun. 14, 2021.
Prior Publication US 2024/0280219 A1, Aug. 22, 2024
Int. Cl. F17C 5/02 (2006.01)
CPC F17C 5/02 (2013.01) [F17C 2205/018 (2013.01); F17C 2205/0352 (2013.01); F17C 2221/012 (2013.01); F17C 2223/0161 (2013.01); F17C 2227/0135 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An installation for pumping cryogenic fluid comprising a fluidtight enclosure configured to contain a bath of cryogenic fluid, the enclosure housing a compression chamber communicating with the bath and a piston that moves in order to compress the fluid in the compression chamber, the piston being mounted at a first end of a rod, the installation comprising a drive mechanism driving a second end of the rod in a back and forth movement in a longitudinal direction of travel, the drive mechanism comprising a motor equipped with a rotary shaft and a mechanical conversion system converting the rotational movement of the rotary shaft into a translational movement, in the configuration of operation of the installation, the longitudinal direction of travel of the piston rod being vertical, the motor being fixed rigidly to an upper mounting structure the rotary shaft being coupled to the mechanical conversion system via a connecting system such as a rigid connection or a Cardan joint, an upper first end of the enclosure being connected to the mechanical conversion system, a lower second end of the enclosure bearing against a support that holds it in place and absorbs forces transmitted by the motor via the shaft, the motor being suspended from the upper mounting structure, the motor and the mechanical conversion system being arranged horizontally with the rotary shaft in the horizontal axis.