US2941376A - Devices for the controlled dispensation of a liquefied gas from a pressure container - Google Patents

Devices for the controlled dispensation of a liquefied gas from a pressure container Download PDF

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Publication number
US2941376A
US2941376A US69027857A US2941376A US 2941376 A US2941376 A US 2941376A US 69027857 A US69027857 A US 69027857A US 2941376 A US2941376 A US 2941376A
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United States
Prior art keywords
liquefied gas
container
valve
pressure
pipe
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Expired - Lifetime
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English (en)
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Messerli Walter
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Individual
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • 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
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2931—Diverse fluid containing pressure systems
    • Y10T137/3003—Fluid separating traps or vents
    • Y10T137/3021—Discriminating outlet for liquid
    • Y10T137/304—With fluid responsive valve
    • Y10T137/3052—Level responsive
    • Y10T137/3056—Weight or pressure

Definitions

  • the present invention relates to a device for the con- 5 trolled dispensation of a liquefied gas from a pressure container.
  • the problem of such a controlled dispensation arises for example in the operation of rectification columns for the fractionated distillation of nitrogen and oxygen from liquid air.
  • a device for the controlled dispensation of a liquefied gas comprising in combination: a pressure container in operation partly filled with the liquefied gas, and an obturator member controlling the discharge of liquefied gas from the said pressure container and subject to the opposing controlling forces of the gas pressure prevailing in the said pressure container above the liquid level therein and the alegbraic sum of the said gas pressure acting on the surface of the said liquid and of a column of liquefied gas under the said surface, in the sense of the said obturator member being opened upon the said column attaining a predetermined head and then allowing the dispensation of liquefied gas from the said pressure container.
  • Fig. l is a diagram of a first embodiment
  • Fig. 2 shows a modification of a detail of Fig. 1,
  • Fig. 3 is a diagram of a second embodiment.
  • the pressure container 1 contains in its interior a rectification column 2 indicated symbolically by sieve bottoms of the conventional kind. Liquid air is supplied through a pipe 3 to this container in which prevails for example a pressure of 7 atmospheres gauge.
  • a liquefied gas containing mainly oxygen is withdrawn from the container.
  • liquefied gas containing mainly nitrogen is discharged from the container 1.
  • These liquefied gases are passed to further rectification devies (not shown) for a sharper separation of oxygen from nitrogen. It has now been found in practice that it is very diflicult to withdraw from the pipes 4 and 5 accurately the quantities of liquid required for keeping the operation going. Particularly in smaller plants for the fractionated distillation of e.g. 5 to 30 litres per hour often so instable conditions occur that an operative is constantly occupied with regulating control valves inserted in the pipes 4 and 5.
  • a differential valve 6 1s provide which has a diaphragm 7.
  • the upper chamber 8 bounded at the bottom by said diaphragm 7 is in communication with the container 1 through a pipe 9, namely above the liquid level 10 desired.
  • the lower chamber 11 bounded on top by the said membrane 7 is in communication through a tube 12 with the said to an overflow tube 13 provided in the container 1.
  • valve stem 14- To the membrane 7 the upper end of a valve stem 14- is attached which carries at its lower end a valve head 15 co-operating with a valve seat 16. With the valve 6 open, the liquid can pass from the pipe 4 between the components 15 and 16 into a pipe 17 wherein for ex ample a pressure of 0.5 atmospheres gauge prevails.
  • the tubes 12 are not heat-insulated and are accordingly at a room temperature of e.g. 10 C., while the pipes 4 and 17 as well as the lower part of the tube 12 are heatinsulated and have a very low temperature, for example of less than l'80 C.
  • the valve 6 operates fully automatically, and it has been found, that after a correct adjustment, once and for all, of a through-flow valve arranged in the pipe 5 no further servicing is required for maintaining stable operation.
  • valve head 21 which rests on the valve seat PatentedJune-21, 1960 pipe 4 which is connected V 3 22.
  • the pipe 4 is in communication also with the space below the valve seat 22. Consequently a force proportional to the cross section area of the seat 22 and to the pressure difference in the pipes 4 and 17 acts from below on the stem 14, so that the diaphragm.
  • the obturator member 23 is designed as a slide valve having a slider member 24.
  • the chambers 8 and 1 1 of the obturator member 23 are connected, as in the case of Fig. 1, to the container 1, of which the lower part only is illustrated.
  • the membrance 7 is additionally biased by a spring, the pressure of, which may be adjustable if desired.
  • the slider member 24 is raised, the lower chamber 26 of a second obturator member 27 is connected through the pipe 27', the opened obturator member 23 and the pipe 28 to. the container 1 above the liquid level 10.
  • the diaphragm 29 of the valve 27 is deflected upwardly against the bias of a spring 30, and thereby the valve head 15 is liftedoif its seat 16, whereafter the liquid can flow oil from the pipe 4 into the pipe 17.
  • ne may alternatively arrange the differential valve 6 otFig. 1 above the container 1 and connect its chambers 8 and 11 to the container 1 in such a manner that in the chamber 11 the pressure prevailing above the liquid level is effective and in the chamber 8 the difference of this pressure and of a column of liquefied gas, whereby the sameresult is attained as in the case of Fig. 1.
  • a device for the dispensation of a liquefied gas comprising: a pressure container in operation partially filled with a volume of liquefied gas; an obturator member having an upper chamber in communication with said pressure container above thelevelof said volume of liquefied gas contained therein and a lower chamber; an overflow tube extending into said container and said gas in communicative relationship with said lower chamber, said tube coacting with said container .to define a maximum volume of retention of said liquefied gas in said container and discharge means for receiving all of said liquefied gas in excess of said volume; diaphragm means operatively disposed in said obtu-rator intermediate said upper and said lower chambers in sealing relationship therewith; and valve means operatively associated with and responsive to saiddiaphragm means, said diaphragm means maintaining said valve means in closed position when said volume of said liquefied gas is less than said maximum volume and actuating said valve means into open position when said volume of said liquefied gas exc-eeds'

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Vacuum Packaging (AREA)
  • Separation By Low-Temperature Treatments (AREA)
US69027857 1956-10-17 1957-10-15 Devices for the controlled dispensation of a liquefied gas from a pressure container Expired - Lifetime US2941376A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH830703X 1956-10-17

Publications (1)

Publication Number Publication Date
US2941376A true US2941376A (en) 1960-06-21

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ID=4540281

Family Applications (1)

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US69027857 Expired - Lifetime US2941376A (en) 1956-10-17 1957-10-15 Devices for the controlled dispensation of a liquefied gas from a pressure container

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US (1) US2941376A (de)
CH (1) CH345358A (de)
GB (1) GB830703A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092973A (en) * 1960-12-05 1963-06-11 Joy Mfg Co Cryogenic apparatus
US3429329A (en) * 1966-10-04 1969-02-25 Smith Corp A O Drain apparatus for automatically draining condensate
US3654953A (en) * 1969-11-13 1972-04-11 Electrolux Ab Valve means for controlling discharge of waste liquid into pneumatic sewage disposal system
US10852061B2 (en) 2017-05-16 2020-12-01 Terrence J. Ebert Apparatus and process for liquefying gases

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169998B (en) * 1985-01-18 1988-02-17 Metal Box Plc Liquid nitrogen metering device with nozzle of insulating material

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US207482A (en) * 1878-08-27 Improvement in drain-traps
US1851422A (en) * 1929-10-12 1932-03-29 Eugene G Durando Liquid level control
US2280383A (en) * 1939-09-08 1942-04-21 Baufre William Lane De Method and apparatus for extracting an auxiliary product of rectification
US2541409A (en) * 1943-06-07 1951-02-13 Richard T Cornelius Gas fractionating apparatus and method
US2788080A (en) * 1955-02-24 1957-04-09 Delta Tank Mfg Co Inc Liquid and gas separator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US207482A (en) * 1878-08-27 Improvement in drain-traps
US1851422A (en) * 1929-10-12 1932-03-29 Eugene G Durando Liquid level control
US2280383A (en) * 1939-09-08 1942-04-21 Baufre William Lane De Method and apparatus for extracting an auxiliary product of rectification
US2541409A (en) * 1943-06-07 1951-02-13 Richard T Cornelius Gas fractionating apparatus and method
US2788080A (en) * 1955-02-24 1957-04-09 Delta Tank Mfg Co Inc Liquid and gas separator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092973A (en) * 1960-12-05 1963-06-11 Joy Mfg Co Cryogenic apparatus
US3429329A (en) * 1966-10-04 1969-02-25 Smith Corp A O Drain apparatus for automatically draining condensate
US3654953A (en) * 1969-11-13 1972-04-11 Electrolux Ab Valve means for controlling discharge of waste liquid into pneumatic sewage disposal system
US10852061B2 (en) 2017-05-16 2020-12-01 Terrence J. Ebert Apparatus and process for liquefying gases

Also Published As

Publication number Publication date
GB830703A (en) 1960-03-16
CH345358A (de) 1960-03-31

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