(1) The technological characteristics of LNG stations are "storage at low temperature and use at normal temperature". The design temperature of the storage tank reaches minus 196 (the boiling point of LNG at room temperature is minus 162 degrees Celsius), and the temperature of the outbound natural gas is required to be no lower than the ambient temperature of 10 degrees Celsius.
(2) The thermal insulation performance of cryogenic storage tanks and cryogenic liquid pumps in stations should be better, and the cold insulation performance of valves and pipe fittings should be better.
(3) The equipment, pipelines, instruments, valves and their accessories in the low-temperature area of the LNG station have better operating performance under low-temperature conditions, and have good mechanical strength, sealing and corrosion resistance.
(4) Since the start-up process of the cryogenic liquid pump relies on the frequency converter to continuously increase the speed to increase the power, increase the flow rate and provide high output pressure, the cryogenic liquid pump is required to increase the frequency and expand the power quickly, usually within a few seconds to more than ten seconds It can meet the requirements within, and the cold and heat insulation performance is better.
(5) The gasification equipment is required to be earthquake-resistant, typhoon-resistant, meet the design requirements, and meet the required gasification flow rate under normal climatic conditions.
(6) The manufacture and daily operation management of cryogenic storage tanks and filters have been included in the national norms for the manufacture, acceptance and supervision of pressure vessels; Report to the monitoring unit of the pressure vessel.
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