Tank comprising inner and outer enclosures and at least one tubular interface in two parts passing through the inner and outer enclosures

A tank comprising:

• an outer enclosure separating an outside zone and an intermediate zone,
• an inner enclosure positioned in the outer enclosure and separating an inside zone and the intermediate zone,
• at least one link system linking the outer and inner enclosures, the at least one link system comprising a tubular interface passing through the outer and inner enclosures, the tubular interface having a first end emerging in the outside zone and a second end emerging in the inside zone,
• a first link linking the tubular interface and the outer enclosure,
• a second link linking the tubular interface and the inner enclosure,
• wherein the tubular interface comprises at least two sections including a first section and a second section placed end-to-end and at least one joining system linking the at least two sections pairwise, the first section being linked to the outer enclosure by the first link and the second section being linked to the inner enclosure by the second link,
• wherein the at least one joining system comprises a first flange ring secured to the first section, a second flange ring secured to the second section and at least one link element keeping the first and second flange rings pressed against one another,
• wherein the tubular interface has an axis of revolution and wherein the first and second flange rings are oriented toward the axis of revolution of the tubular interface, and
• wherein the at least one joining system comprises a plurality of link elements passing through at least the first and second flange rings.