US 12,392,454 B2
Method for performing pressure tests on a composite pressure vessel and device for manufacturing and pressure testing the composite pressure vessel
Denis Thibaut, Brussels (BE)
Assigned to PLASTIC OMNIUM NEW ENERGIES FRANCE, Lyons (FR)
Appl. No. 17/996,526
Filed by PLASTIC OMNIUM NEW ENERGIES FRANCE, Lyons (FR)
PCT Filed Apr. 22, 2021, PCT No. PCT/EP2021/060581
§ 371(c)(1), (2) Date Oct. 19, 2022,
PCT Pub. No. WO2021/214250, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 20170802 (EP), filed on Apr. 22, 2020.
Prior Publication US 2023/0078383 A1, Mar. 16, 2023
Int. Cl. F17C 13/02 (2006.01); F17C 13/12 (2006.01)
CPC F17C 13/02 (2013.01) [F17C 13/12 (2013.01); F17C 2201/0109 (2013.01); F17C 2201/056 (2013.01); F17C 2203/0619 (2013.01); F17C 2203/0663 (2013.01); F17C 2221/012 (2013.01); F17C 2221/033 (2013.01); F17C 2221/035 (2013.01); F17C 2223/0123 (2013.01); F17C 2250/04 (2013.01); F17C 2250/043 (2013.01); F17C 2260/035 (2013.01); F17C 2260/042 (2013.01); F17C 2270/0168 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for performing pressure tests on a composite pressure vessel, comprising:
providing a composite pressure vessel comprising at least one opening for an injection of a liquid;
injecting the liquid in the composite pressure vessel through the at least one opening to reach a threshold pressure;
measuring an external volume variation of the composite pressure vessel
draining the liquid from the composite pressure vessel through the at least one opening; and
drying an inside cavity of the composite pressure vessel with a drying gas,
wherein the drying the inside cavity of the composite pressure vessel is performed at a pressure inside the composite pressure vessel, which is lower than an external pressure.