The invention discloses a vertical low-temperature
storage tank having a slide
lantern ring support mechanism. The
storage tank comprises a tank body and support legs, wherein the support legs are arranged at the lower part of the tank body; the tank body comprises an outer container, an inner container, reinforcing rings, support pipes and the slide
lantern ring support mechanism; the inner container is arranged in the outer container; a closed interlayer space is formed between the outer container and the inner container; the reinforcing rings and the slide
lantern ring support mechanism are both arranged in the interlayer space; the support pipes are arranged at the lower part of the interlayer space; the slide lantern ring support mechanism is arranged at the upper part of the interlayer space; and the external of the slide lantern ring support mechanism is connected with the reinforcing rings. The
storage tank is safe and reliable in structure, is low in manufacturing and installation difficulty, is simple and convenient, is uniform in stress, decreases the use number of transverse drawstrings, reduces the
heat leakage, and improves the heat insulating property; and when the temperature of the inner container is reduced to generate the shrinkage, the shrinkage is not restricted by a slide lantern ring, the thermal stress generated by the temperature change is eliminated, the safety of the storage tank is improved, and the service life of the storage tank is prolonged.