Fluid transfer system, swivel joint device including such a system, stack of swivel joint devices and fluid exploitation installation

Fluid transfer system (100) configured to equip a fluid exploitation installation (1), the fluid transfer system including:

• a liquid transfer pipe (110), configured to carry a liquefied gas, and
• a gas transfer pipe (120), configured to carry a gas in vapour form,
• characterised in that the liquid transfer pipe (110) and the gas transfer pipe (120) are concentric,
• the gas transfer pipe (120) surrounding the liquid transfer pipe (110),
• and in that the fluid transfer system furthermore includes:
• a buffer member (130), disposed between the liquid transfer pipe (110) and the gas transfer pipe (120) and surrounding at least partially the liquid transfer pipe (110), the buffer member (130) being configured to transfer an evaporated portion of the liquefied gas circulating in the liquid transfer pipe (110) from the liquid transfer pipe (110) to the gas transfer pipe (120).