公开(公告)号：US09869429B2

公开(公告)日：2018-01-16

申请号：US13782922

申请日：2013-03-01

Applicant: Chart Industries, Inc.

Inventor： Paul Drube ,  Timothy Neeser ,  Tyler Stousland

IPC: F17C13/02 ,  F17C7/02 ,  F17C7/04

CPC classification number: F17C7/02 ,  F17C7/04 ,  F17C2201/0109 ,  F17C2201/032 ,  F17C2201/054 ,  F17C2203/032 ,  F17C2203/0391 ,  F17C2203/0629 ,  F17C2203/0639 ,  F17C2203/0643 ,  F17C2205/018 ,  F17C2205/0326 ,  F17C2205/0332 ,  F17C2205/0335 ,  F17C2205/0355 ,  F17C2221/013 ,  F17C2221/014 ,  F17C2223/0161 ,  F17C2223/0169 ,  F17C2223/033 ,  F17C2223/041 ,  F17C2223/046 ,  F17C2225/0161 ,  F17C2225/0169 ,  F17C2227/0107 ,  F17C2227/0355 ,  F17C2227/0374 ,  F17C2250/032 ,  F17C2250/036 ,  F17C2250/0408 ,  F17C2250/043 ,  F17C2250/0434 ,  F17C2250/0439 ,  F17C2250/0491 ,  F17C2250/0495 ,  F17C2250/0626 ,  F17C2250/0631 ,  F17C2250/077 ,  F17C2260/024 ,  F17C2270/05

Abstract: A system for dispensing cryogenic liquid to a use point includes a bulk tank containing a supply of carbon dioxide or other cryogenic liquid and a pressure builder that is in communication with the tank via a pressure building valve. The pressure builder uses heat exchangers to vaporize a portion of the cryogenic liquid as needed to pressurize the bulk tank. The pressurized cryogenic liquid is dispensed through a dispensing line running from the bottom of the tank. A vent valve also vents vapor from the tank to control pressure. Operation of the vent and pressure building valves is automated by a controller that receives data from sensors. The controller determines the required saturation pressure for the tank and varies the tank pressure to match and provide a generally constant outlet pressure depending on conditions of the cryogenic liquid.