# US 10,481,049 B2 · Cryogenic liquid sampler > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,481,049 B2 - Document ID: US10481049B2 - Status: Granted - Kind: B2 - Application number: 15/823,777 - Filed: 2017-11-28 - Published: 2019-05-30 - Granted: 2019-11-19 - Earliest claimed: 2017-11-28 - Assignees: Air Liquide Canada, Inc. - Applicants: Air Liquide Canada, Inc. - Inventors: Joseph Philippe Pellerin - Web page: https://patentgrep.com/patent/US10481049B2 ## CPC - G01N 1/20: for flowing or falling materials ({G01N1/2035} G01N1/12, G01N1/14 take precedence) - F17C 13/00: Details of vessels or of the filling or discharging of vessels - G01N 1/10: in the liquid or fluent state {(burettes, pipettes B01L3/02; sampling of ground water E02D1/06; metering by volume of fluids or fluent solid material G01F11/00, G01F13/00)} - G01N 1/2035: {by deviating part of a fluid stream, e.g. by drawing-off or tapping} - F17C 13/02: Special adaptations of indicating, measuring, or monitoring equipment (measuring in general G01) - F17C 2221/014: Nitrogen - F17C 2221/05: Ultrapure fluid - F17C 2223/0161: cryogenic, e.g. LNG, GNL, PLNG - F17C 2225/045: with a dip tube - F17C 2250/0447: Composition; Humidity - F17C 2260/024: Improving metering - F17C 2260/044: Avoiding pollution or contamination - F25J 3/0295: {Start-up or control of the process; Details of the apparatus used, e.g. sieve plates, packings} - F25J 3/04848: {Control strategy, e.g. advanced process control or dynamic modeling} - G01N 2001/1081: {Storing samples under refrigeration} - G01N 2001/2071: {Removable sample bottle} - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25) - F25J: LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS {OR LIQUEFIED GASEOUS} MIXTURES BY PRESSURE AND COLD TREATMENT {OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE (cryogenic pumps F04B37/08; gas storage vessels, gas holders F17; filing vessels with, or discharging from vessels, compressed, liquefied or solidified gases F17C; refrigeration machines, plants, or systems F25B)} ## Abstract A cryogenic liquid sampler is provided. The sampler includes an inner volume and a useful internal length, a cryogenic liquid inlet conduit in fluid connection with an inlet valve, a weir tube in fluid connection with the inlet valve, wherein the weir tube comprises at least one weir hole, wherein the weir tube extends a predetermined distance into the inner volume, a cryogenic liquid outlet conduit in fluid connection with inner volume and in fluid connection with an outlet valve, and a purge tube in fluid connection with the outlet valve. ## Claims ### Claim 1 A cryogenic liquid sampler comprising: a sampler vessel comprising an inner volume and a useful internal length, a cryogenic liquid inlet conduit in fluid connection with an inlet valve, a weir tube in fluid connection with the inlet valve and the inner volume, wherein the weir tube comprises a distal end within the inner volume, at least one weir hole through a circumferential surface of the weir tube and proximate the distal end, and a weir tube top plug which seals a distal opening of the weir tube, wherein the weir tube extends a predetermined distance into the inner volume, a cryogenic liquid outlet conduit in fluid connection with the inner volume and in fluid connection with an outlet valve, and a purge tube in fluid connection with the outlet valve, wherein the weir tube has an outside diameter of Dwt wherein the at least one weir hole has a generally circular shape and a diameter of Dwh, and wherein Dwh/Dwt is between ¼ and ½. ### Claim 2 (depends on 1) The cryogenic liquid sampler of claim 1, wherein the weir tube has an outside diameter of Dwt, wherein the at least one weir hole has a generally rectangular shape, a height of Hwh, a width of Wwh and wherein Hwh/Dwt is between about ⅓ and about ¾, and wherein Wwh/Dwt is between about ⅓ and about ¾. ### Claim 3 (depends on 1) The cryogenic liquid sampler of claim 1, wherein the predetermined distance is between about ¼ and ½ of the useful internal length. ### Claim 4 (depends on 1) The cryogenic liquid sampler of claim 1, wherein the sampler vessel is stainless steel. ### Claim 5 (depends on 1) The cryogenic liquid sampler of claim 1, wherein the sampler vessel is 304 stainless steel. ### Claim 6 A cryogenic liquid sampler comprising: a sampler vessel comprising an inner volume and a useful internal length, a cryogenic liquid inlet conduit in fluid connection with an inlet valve, a weir tube in fluid connection with the inlet valve and the inner volume, wherein the weir tube comprises a distal end within the inner volume, at least one weir hole through a circumferential surface of the weir tube and proximate the distal end, and a weir tube top plug which seals a distal opening of the weir tube, wherein the weir tube extends a predetermined distance into the inner volume, a cryogenic liquid outlet conduit in fluid connection with the inner volume and in fluid connection with an outlet valve, and a purge tube in fluid connection with the outlet valve, wherein the weir tube has an outside diameter of Dwt, wherein the at least one weir hole has a generally rectangular shape, a height of Hwh, a width of Wwh and wherein Hwh/Dwt is between ⅓ and ¾, and wherein Wwh/Dwt is between ⅓ and ¾. ### Claim 7 (depends on 6) The cryogenic liquid sampler of claim 6, further comprising a pressure indicator in fluid connection with the inner volume. ### Claim 8 (depends on 6) The cryogenic liquid sampler of claim 6, wherein the predetermined distance is between about ¼ and ½ of the useful internal length. ### Claim 9 (depends on 6) The cryogenic liquid sampler of claim 6, wherein the sampler vessel is stainless steel. ### Claim 10 (depends on 6) The cryogenic liquid sampler of claim 6, wherein the sampler vessel is 304 stainless steel.