Abstract: According to some embodiments, a cryogenic storage tank includes a manway formed in a body of the cryogenic storage tank. An inner manway lid is coupled to an inner wall of the cryogenic storage tank and disposed over at least a portion of the manway. An outer manway lid is coupled to an outer wall of the cryogenic storage tank and disposed over at least a portion of the manway. The inner and outer manway lids are configured to retain pressure within the cryogenic storage tank.

Abstract: According to some embodiments, a system for a submerged pump includes a cryogenic storage tank and a pump chamber. The pump chamber is suspended from a top of the cryogenic storage tank in a vertical orientation. The pump chamber includes a liquid pump operable to pump cryogenic liquid from the cryogenic storage tank.

Abstract: According to some embodiments, a cryogenic storage tank includes a manway formed in a body of the cryogenic storage tank. An inner manway lid is coupled to an inner wall of the cryogenic storage tank and disposed over at least a portion of the manway. An outer manway lid is coupled to an outer wall of the cryogenic storage tank and disposed over at least a portion of the manway. The inner and outer manway lids are configured to retain pressure within the cryogenic storage tank.

Abstract: A cryogenic vessel includes a first, outer vessel assembly having an outer vessel and a liquid fill line assembly and a second, ullage space vessel having a bottom and disposed within the first, outer vessel, adjacent to the top of the first, outer vessel. The liquid fill line assembly has a venturi assembly adjacent the bottom of the ullage space vessel. The venturi assembly is structured to create a low pressure zone, relative to the ullage space vessel, during a fill procedure whereby, during a fill procedure, fluid is drawn from within the ullage space vessel into the fill line assembly.

Abstract: An economizer circuit assembly for a cryogenic liquid vessel assembly is disclosed. The cryogenic liquid vessel assembly includes a first, outer shell and a second, inner shell defining a storage space. The storage space has a liquid space and a vapor space. The cryogenic vessel also has a delivery line extending from outside the first, outer vessel shell into the liquid space. The economizer circuit assembly includes a vent line and an integration device. The vent line extends from outside the first, outer shell into the cryogenic vessel. The vent line has a first end and a second end. The first end is disposed in the vapor space. The vent line and the delivery line are coupled, and in fluid communication at, the integration device.

Abstract: A dual purpose recirculation valve system for a cryogenic vessel includes a fill line, a delivery line assembly, a recirculation line and a recirculation valve. The cryogenic vessel defines a storage space and includes a pressure monitoring device structured to monitor the pressure in the storage space, as well as an electronic control system structured to receive input from the pressure monitoring device. The fill line is structured to be coupled to a bulk tank, whereby the storage space is filled with a cryogenic fluid. The delivery line assembly has a delivery coupling assembly and the delivery line assembly structured to remove the cryogenic fluid from the storage space and deliver the cryogenic fluid to the delivery coupling assembly. The recirculation line extends between, and is in fluid communication with both, the fill line and the delivery line assembly.

Abstract: A cryogenic vessel includes a first, outer vessel assembly having an outer vessel and a liquid fill line assembly and a second, ullage space vessel having a bottom and disposed within the first, outer vessel, adjacent to the top of the first, outer vessel. The liquid fill line assembly has a venturi assembly adjacent the bottom of the ullage space vessel. The venturi assembly is structured to create a low pressure zone, relative to the ullage space vessel, during a fill procedure whereby, during a fill procedure, fluid is drawn from within the ullage space vessel into the fill line assembly.

Abstract: A liquid natural gas filling system structured to store a cryogenic fluid at a low pressure and fill a use vessel at a high pressure. The filling system includes a first, low pressure vessel, at least one second, high pressure vessel, a plurality of conduits, each conduit in the plurality having a valve, extending between, and in fluid communication within the first, low pressure vessel and the at least one second, high pressure vessel, a pressure building means coupled to the at least one second, high pressure vessel and structured to raise the pressure of a cryogenic liquid within the at least one second, high pressure vessel, and an outlet nozzle structured to be coupled to a use vessel, the outlet nozzle coupled via the plurality of conduits to, and in fluid communication with, the first, low pressure vessel and the second, high pressure vessel. The filling system is structured so that a cryogenic liquid may be stored in the first, low pressure vessel at a low pressure.