SAFETY STRUCTURE FOR LIFTING STEEL DOME OF ULTRA-LOW TEMPERATURE LIQUEFIED NATURAL GAS STORAGE TANK USING PNEUMATIC JACK AND METHOD FOR LIFTING USING PNEUMATIC JACK Russian patent published in 2023 - IPC B66F3/24 

FIELD: construction work.

SUBSTANCE: safety structure for lifting a steel dome of an ultra-low temperature liquefied natural gas storage tank using a pneumatic jack and a method for lifting using a pneumatic jack. The safety structure for lifting the steel dome of an ultra-low temperature liquefied natural gas storage tank using a pneumatic jack contains a removable mounting socket attached to the bottom of the steel dome, also contains: a mounting plate fixedly attached to the side wall of the mounting socket; a rotation axis rotationally coupled to the mounting plate; a roller fixedly attached to the rotation axis and attached to the inner wall of the ultra-low temperature liquefied natural gas storage tank; a crankshaft mounted for rotation on the axis of rotation using a ratchet wheel. The force exerted by the friction between the roller and the inner wall of the reservoir as the dome drops allows the first piston plate to slide and force hydraulic oil into the oil bath to push the second piston plate to slide so that the slider slides out of the oil bath so that the stop rests against the inner wall reservoir, the gravity force of the dome limits the dome to avoid the dome falling to the floor due to air leakage, thereby avoiding damage to the dome and increasing the safety of the dome when lifted with a pneumatic jack.

EFFECT: safety is achieved when lifting the structure.

10 cl 10 dwg