According to an embodiment of the present invention, a cryogenic fluid delivery system includes a vessel containing a cryogenic fluid at a first pressure and a first temperature, a first heat exchanger coupled to the vessel for receiving the cryogenic fluid and cooling the cryogenic fluid to a secon
According to an embodiment of the present invention, a cryogenic fluid delivery system includes a vessel containing a cryogenic fluid at a first pressure and a first temperature, a first heat exchanger coupled to the vessel for receiving the cryogenic fluid and cooling the cryogenic fluid to a second temperature, a first pump coupled to the first heat exchanger for pressurizing the cryogenic fluid to a second pressure, a second pump for pressurizing the cryogenic fluid to a third pressure, a second heat exchanger coupled to the second pump for cooling the cryogenic fluid to a third temperature, and a nozzle coupled to the second heat exchanger for delivering a jet of the cryogenic fluid toward a target.
대표청구항▼
What is claimed is: 1. A cryogenic fluid delivery system, comprising: a vessel operable to store a coolant; piping disposed within the vessel and operable to receive a cryogenic fluid at a first temperature from a feedline coupled to a first end of the piping; a recirculation pump coupled to a seco
What is claimed is: 1. A cryogenic fluid delivery system, comprising: a vessel operable to store a coolant; piping disposed within the vessel and operable to receive a cryogenic fluid at a first temperature from a feedline coupled to a first end of the piping; a recirculation pump coupled to a second end of the piping and operable to deliver the cryogenic fluid at a second temperature to a jacketed pump, the recirculation pump operable to recirculate at least a portion of the cryogenic fluid from the jacketed pump back to the feedline through a feedback line; the jacketed pump operable to receive the cryogenic fluid at a first pressure and output the cryogenic fluid at a second pressure; and an automated level controller associated with the vessel for automatically controlling the level of the coolant within the vessel. 2. The system of claim 1, wherein the cryogenic fluid comprises nitrogen. 3. The system of claim 1, wherein the coolant comprises nitrogen. 4. The system of claim 1, wherein the automated level controller is a differential pressure transducer. 5. The system of claim 4, wherein the differential pressure transducer comprises at least one of a bubbler, a float, and a laser sensor. 6. The system of claim 4, further comprising a line coupled to the feedback line, the line having an associated valve operating with the automated level controller to direct some of the cryogenic fluid within the feedback line into the vessel. 7. The system of claim 1, further comprising a gas phase separator coupled to the feedline for directing gas within the cryogenic fluid to the line. 8. The system of claim 1, wherein the jacketed pump comprises a hydraulically-driven pump. 9. The system of claim 1, wherein the jacketed pump is operable to output cryogenic fluid at a plurality of different pressures. 10. The system of claim 9, wherein the jacketed pump is operable to output the cryogenic fluid at a second pressure that is proportional to the first pressure. 11. A method for delivery of cryogenic fluid, comprising: storing coolant in a vessel; inputting cryogenic fluid at a first temperature to a first end of piping disposed within the vessel; receiving the cryogenic fluid at a second temperature and a first pressure at a recirculation pump coupled to a second end of the piping; pumping the cryogenic fluid from the recirculation pump to a jacketed pump receiving the cryogenic fluid at the jacketed pump at a first pressure; outputting the cryogenic fluid from the jacketed pump at a second pressure; recirculating at least a portion of the cryogenic fluid to the piping through a feedback line; and adjusting a level of the coolant within the vessel with an automated level controller. 12. The method of claim 11, wherein the cryogenic fluid comprises nitrogen. 13. The method of claim 11, wherein the coolant comprises nitrogen. 14. The method of claim 11, wherein adjusting the level of the coolant with an automated level controller comprises adjusting the level with a differential pressure transducer. 15. The method of claim 14, wherein the differential pressure transducer comprises at least one of a bubbler, a float, and a laser sensor. 16. The method of claim 14, wherein adjusting the level of the coolant comprises opening a valve associated with the feedback line; and directing a portion of the cryogenic fluid within the feedback line into the vessel. 17. The method of claim 11, further comprising directing gas within the cryogenic fluid to into the vessel through a gas phase separator. 18. The method of claim 11, wherein the jacketed pump comprises a hydraulically-driven pump. 19. The method of claim 11, wherein outputting the cryogenic fluid from the jacketed pump at the second pressure comprises outputting the cryogenic fluid from the jacketed pump at one of a plurality of pressures based on the first pressure. 20. The method of claim 19, wherein outputting the cryogenic fluid at one of a plurality of pressures comprises outputting the cryogenic fluid at a second pressure that is proportional to the first pressure.
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