PRESSURE VESSELS

摘要

A pressure vessel of double ring construction comprising inner and outer concentric vessels with an annular interspace between the two vessels. Liquid is pressurized in the interspace to support the inner vessel. The inner vessel is supported without constraint from the outer vessel and the ends of the interspace are closed by joints which allow freedom of radial expansion of the ends of the inner vessel without giving rise to stressing of the adjacent ends of the outer vessel. In a particular arrangement the ends of the interspace are closed by sealed joints which make sliding contact with the end faces of the inner vessel.