Fire extinguishing CO2 storage tank_polyhedral tank body structure for oil depot and petrochemical plant

The invention discloses a fire extinguishing CO2 storage tank_polyhedral tank body structure for an oil depot and petrochemical plant. The fire extinguishing CO2 storage tank_polyhedral tank body structure takes the diameter D and height H of a largest oil tank in an existing oil depot and petrochemical plant oil tank group as design parameters and is formed by welding structural parts such as a tank top, a tank body, cylindrical in-pipe supports, a tank bottom, gas inlet and outlet pipes, the material can select and use the same material of the oil tank of the oil depot, Q235, 16Mn, high-performance steel, alloy steel and the like, air-tight nondestructive testing is carried out after welding, welding quality acceptance is carried out according to the welding standard of a pressure vesselwith 8 atmospheric pressures, the size recommended design range is as follows: the diameter is 1/4-1D, and the height is less than or equal to 1H, optimally, the diameter is 1D, the height is 1H, thetank top and the tank bot