LIQUEFIED NATURAL GAS UNDERGROUND STORAGE Russian patent published in 2016 - IPC B65G5/00 

FIELD: gas industry.

SUBSTANCE: liquefied natural gas underground storage (LNG US) relates to LNG underground storage and reservation system and can be used for the gas storage and delivering to a consumer. LNG US is located below ground level (1), fenced along the perimeter from ground mass with a concrete wall of “wall in ground” (2) type, includes installed on the basis of compacted ground (3) and heat-insulating intermediate layer (4) reinforced concrete tank (5), which is enveloped on the external side surface with pliable layer (6), heat-insulated (7) and waterproof (8) from LNG inside. Shaft (9) extending from the reinforced-concrete tank to the surface is equipped with pipelines (10), tight hatches (11) and staircase (12). Tank roof (5) is covered with a layer of light heat-insulating material (13). Reinforcement of reinforced-concrete tank (5) is made combined, including a combination of rod and dispersed, fibre reinforcing with stainless steel, herewith fine-grain modified steel fibre reinforced concrete is used. Herewith the LNG US structural reliability is substantially increased.

EFFECT: technical result is the improvement of strength, water-impermeability and frost-resistance of reinforced concrete.

1 cl, 1 dwg