RELIQUEFYING DEVICE FOR MARINE USE

摘要

PURPOSE:To transport either of two kinds of liquefied gases of different boiling points by constituting so as to use by switching the internal piping of a set of BOG(boil off gas) reliquefying device. CONSTITUTION:The switching piping 10 communicating the piping 30 reaching to a cargo storage tank 1 from the cargo outlet port 3am of the cargo condenser 3a of a 1st system reliquefying device and the piping 32 reaching to the refrigerant inlet port 3bn of a cargo condenser 3b from the refrigerant condenser 6b of a 2nd system reliquefying device is provided and a cargo expansion valve 4a is interposed between the cargo condensers 3a, 3b. The switching piping 11 communicating the piping 31 reaching to a compressor 5b from the cargo condenser refrigerant outlet port 3bp of the 2nd system reliquefying device and the piping 33 reaching to a 1st system cargo compressor 2a from the storage tank 1 is also provided. The refrigerant reservoir tank 12 for deep cooling communicating via a switch valve to a 1st system cargo cooling system is then provided.