SPECIAL FORTIFICATION STRUCTURE Russian patent published in 2018 - IPC E04H9/12 F02G1/43 

FIELD: construction.

SUBSTANCE: underground special fortification consists of a mine entrance to communicate with day surface and united with him the main concrete premises containing the autonomic power plant, refrigeration machine air conditioning system special fortification constructions related to the coolant circuit chiller with pump, tank and fuel line fuel electric power plant to the autonomous tank with air and artery supply of air as an oxidizer in autonomous power plant. The building is equipped with reinforced concrete tank for storing liquefied natural gas used as fuel in full isolation, gas piston power plant as an autonomous power plant heat exchanger-evaporator related to air conditioning system with heat and closed loop circulating pump, cryogenic Stirling machine with an electric motor that is associated with the gas tank full with liquefied natural gas line pumping vapours and line drain liquefied natural gas. Tank with liquefied natural gas with vacuum-free thermal insulation, is located outside the main premises and associated with it reinforced concrete technological postern for lines with a natural gas tank line refills liquefied natural gas, passing in the mine entrance and line with a cryogenic pump for feeding liquefied natural gas power plant to gas piston power plant, passing through the heat exchanger-evaporator.

EFFECT: decrease in the electric power consumption of the refrigeration machine when operating in full isolation mode, increase explosion and fire safety during storage of liquefied natural gas in a special fortification.

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