초록 ▼

A device for pressurizing a tank containing a supply of cryogenic liquid features a tubular enclosure disposed within the cryogenic liquid. The tubular enclosure features an opening in its bottom and is in communication with a pressure builder coil external to the tank. The vapor side of the pressur

A device for pressurizing a tank containing a supply of cryogenic liquid features a tubular enclosure disposed within the cryogenic liquid. The tubular enclosure features an opening in its bottom and is in communication with a pressure builder coil external to the tank. The vapor side of the pressure builder coil is in communication with the head space of the tank. An electric heater element is disposed in the bottom of the tubular enclosure. An insulating tube may optionally be disposed about the tubular enclosure. In addition, a ball may optionally be positioned adjacent the opening in the tubular enclosure so that a check valve is formed. The device fits through the tops of existing cryogenic tanks.

대표청구항 ▼

[ What is claimed is:] [1.] A device for pressurizing a tank containing a supply of cryogenic liquid comprising:a) a tubular enclosure disposed within said supply of cryogenic liquid having an opening to permit a portion of the cryogenic liquid in the tank to enter the tubular enclosure;b) a heater

[ What is claimed is:] [1.] A device for pressurizing a tank containing a supply of cryogenic liquid comprising:a) a tubular enclosure disposed within said supply of cryogenic liquid having an opening to permit a portion of the cryogenic liquid in the tank to enter the tubular enclosure;b) a heater element disposed within said tubular enclosure to heat the cryogenic liquid therein to produce vapor;c) a conduit for conveying said vapor from the tubular enclosure to an upper portion of said tank so that said tank is pressurized to a desired value; andd) an insulating tube concentrically disposed about said tubular enclosure so that an annular insulation space is defined therebetween.