Tank comprising inner and outer chambers and at least one link system with flexible radial blades linking said chambers

A tank comprising:

• an outer chamber,
• an inner chamber positioned in the outer chamber;
• and
• first and second link systems, diametrically opposite, linking the outer chamber and the inner chamber, the outer chamber and the inner chamber being displaced with respect to one another in a direction of displacement in operation,
• wherein at least one of the first and second link systems comprises:
• a central part linked to one of the outer chamber and the inner chamber;
• and
• at least three blades distributed around the central part, each blade extending between a first end linked to the central part and a second end which has a head linked to the other of the outer chamber and the inner chamber;
• wherein each blade is sufficiently flexible to be deformed elastically between its first and second ends in the direction of displacement, wherein the at least three blades are curved and have a profile such that the heads are:
• offset towards the inner chamber with respect to the central part in an absence of strains corresponding to an absence of hydrogen in the inner chamber, and
• disposed substantially in a same transverse plane as the central part in a presence of strains corresponding to a presence of hydrogen in a cryogenic state in the inner chamber.