Pump tower of liquefied gas storage tank

A pump tower provided a liquefied gas storage tank to supply and discharge liquefied gas to and from the liquefied gas storage tank, the pump tower comprising:

• a rotation preventing support mounted on a bottom of the liquefied gas storage tank to restrict rotation of the pump tower while permitting vertical displacement of the pump tower;
• and
• a horizontal movement preventing support mounted on a bottom of the liquefied gas storage tank to restrict horizontal displacement of the pump tower while permitting vertical displacement of the pump tower,
• wherein each of the rotation preventing support and the horizontal movement preventing support comprises a lower body secured to a hull, an upper body secured to the pump tower, and a wedge member interposed between the lower body and the upper body.

A liquefied gas storage tank, comprising:

• a sealing and insulating barrier configured to prevent leakage of liquefied gas from the liquefied gas storage tank and to block heat transfer from outside;
• a pump tower comprising a discharge pipe configured to discharge liquefied gas from the liquefied gas storage tanker and a filling pipe configured to supply liquefied gas into the liquefied gas storage tank;
• and
• dome formed over the pump tower, wherein the pump tower is secured to the dome;
• and
• two or more supports configured to restrict horizontal and rotational movement of the pump tower,
• wherein the two or more supports comprising a first support that comprises a lower body secured to a bottom of the liquid gas storage tank and further comprises an upper body secured to at least one of the plurality of stiffeners,
• wherein the upper body comprises an inclined inner surface defining a tapered hollow that is tapered toward the bottom, the lower body comprises a post upwardly extending into the tapered hollow, and at least one wedge member is inserted between the post and the inclined inner surface of the upper body such that the upper body and the lower body are engaged with each other while being slidable relative to each other.