L'air Liquide,societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude

Gaetan Coleiro

Fabien Durand

Anh Thao Thieu

Simon Crispel

Youssef Abdo

Eric Michalski

The invention relates to a fluid compression apparatus comprising a sealed enclosure intended to contain a bath of cryogenic fluid, a first and a second compression chambers, an intake system for admission into the first chamber, a system for transfer from the first to the second chamber, the apparatus further comprising a communicating discharge orifice for compressed fluid to leave the second chamber, the apparatus further comprising an overflow discharge orifice provided with a valve for discharge from the first compression chamber to the bath so as to let surplus liquid leave during compression of fluid in the first chamber, the overflow discharge orifice communicating with the enclosure via at least one flow retarder configured to attenuate the speed and/or intensity of the discharged liquid flow by limiting its pressure drop.

Fluid compression apparatus and method

A coupling device and method for cryogenic fluid transport features quick connection, automatic closure, and emergency separation. The device includes two insulated pipes with self-closing valves at their connection ends. A quick-connection mechanism rapidly joins the pipes, while a distinct emergency separation system, located at one pipe's connection end, allows for immediate, safe disconnection in emergencies. This system ensures a rigid link during normal operation and a split configuration upon activation, separating the connection end from the pipe without fluid spillage. The design prioritizes reliable, sealed coupling/uncoupling and minimizes heat transfer, making it suitable for applications like liquid hydrogen.

Coupling device and method

Device for pumping liquid hydrogen including, arranged in series between an inlet for fluid to be compressed and an outlet for compressed fluid, a first compression member with a piston forming a first compression stage and a second compression member with a piston forming a second compression stage. The first compression member compresses the liquid hydrogen to a supercritical state. The second compression member compresses the supercritical hydrogen from the first compression member to an increased pressure, in particular, between 200 and 1000 bar.

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Sassenage, France

Gaetan Coleiro