LNG storage tank manufacturers introduce some basic requirements about LNG storage tanks

　　LNG natural gas is recognized as an excellent energy source for clean, environmental protection and safety. The volume of liquefied natural gas is reduced by about 600 times, which brings great benefits to storage. The storage of liquefied natural gas (LNG) is an atmospheric and low-temperature LNG storage tank.

　　1. Low temperature resistance

　　LNG natural gas chooses low temperature and normal pressure storage method, which reduces the natural gas temperature to below the boiling point. Compared with high pressure and normal temperature storage, it can greatly reduce the thickness of the tank wall and improve safety performance. Therefore, LNG requires the tank body to have good low temperature resistance. And excellent cold retention performance.

　　2, high safety requirements

　　Because the tank contains low-temperature liquid, when an accident occurs in the tank, a large amount of refrigerated liquid will evaporate, and the amount of gasification will be about 300 times that of the original refrigerated state, and it will automatically explode in the atmosphere to form a gas cluster.

　　The second-tier storage tank can completely seal the leaked liquid and boil-off gas to ensure storage safety.

　　3, special materials

　　The inner tank wall requires low temperature resistance. Generally, 9Ni steel or aluminum alloy is selected, and the outer tank wall is prestressed concrete.

　　4. Strict insulation measures

　　Since the temperature difference between the inside and outside of the tank can be as high as 200, the temperature in the tank must be maintained at -160 degrees, and high-performance cold insulation materials must be filled between the inner tank and the outer tank. The cold insulation material at the bottom of the tank must have sufficient pressure performance.

　　5, good seismic performance

　　The seismic requirements of general buildings are that they will not rupture and collapse under the specified seismic load. In order to ensure the safety of the storage tank under accidental loads, the storage tank must have good seismic performance. LG storage tanks are not required to be under the specified seismic load. Dumped or cracked.

　　This time, in order to avoid the earthquake fracture zone, the seismic test of the storage tank is required before construction, and the structural performance of the storage tank under dynamic conditions is analyzed to prevent the storage tank from being damaged under the specified seismic intensity.

　　6. Strict construction requirements

　　Welding must be carried out 100% magnetic particle inspection (MT) and 100% vacuum air tightness inspection) VBT), cold insulation materials must be strictly selected, and the specified procedures must be followed during the construction process. In order to prevent concrete cracks, post-tensioned construction methods are adopted. , The verticality of the tank wall is strictly controlled.

　　The ceiling of the concrete outer cylinder should have high pressure resistance and tensile strength, which can prevent the impact of general falling objects. The bottom concrete is very thick, and the hydration temperature must be controlled during water injection to prevent cracking caused by temperature stress.

　　LNG storage tank manufacturers will not introduce much today. Our company specializes in the production of LNG storage tanks. Welcome everyone to call for consultation. All employees of our company's LNG storage tank manufacturers wish everyone a red envelope every day in life!