US3296809A - Device for pouring liquefied gas - Google Patents

Device for pouring liquefied gas Download PDF

Info

Publication number
US3296809A
US3296809A US481844A US48184465A US3296809A US 3296809 A US3296809 A US 3296809A US 481844 A US481844 A US 481844A US 48184465 A US48184465 A US 48184465A US 3296809 A US3296809 A US 3296809A
Authority
US
United States
Prior art keywords
liquefied gas
expansion chamber
cap
chamber
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US481844A
Inventor
Feuerstein Seymour
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aerospace Corp
Original Assignee
Aerospace Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aerospace Corp filed Critical Aerospace Corp
Priority to US481844A priority Critical patent/US3296809A/en
Application granted granted Critical
Publication of US3296809A publication Critical patent/US3296809A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling

Definitions

  • This invention relates to a device providing the rapid and lowloss removal of liquefied gas from a pressurized vessel to an open container.
  • liquefied gases as oxygen and carbon dioxide
  • pressurized tanks to facilitate transporting and handling and to prevent loss due to evaporation.
  • a small diameter tube is attached to the valved outlet of the pressure tank.
  • the liquid gas is ejected from the tank outwardly through the tube.
  • a portion of the gas vigorously boils and evaporates within the tube.
  • mist or fog is created.
  • a portion of the mist consists of condensed atmospheric moisture, a greater portion of it is made up of the vapor of the previously liquefied gas.
  • the present invention has as its primary purpose the reduction in the loss of the liquefied gas through boil-ofi. In accomplishing its purpose there is provided both econ omy and convenience in the near elimination of the massive clouds of fog which heretofore accompanied the pouring operation. v
  • the purpose of this invention is achieved through the provision of a substantially closed expansion chamber serving to confine the boiled-off gas.
  • a condensing media which acts to recondense the gas and to collect the mist entrained in the evaporated gas.
  • the invention consists essentially of an insulated cylindric expansion chamber substantially filled with a loosely packed fibrous material such as stainless steel wool.
  • a loosely packed fibrous material such as stainless steel wool.
  • Within the chamber is an open ended swirl ring into which the liquefied gas is initially admitted.
  • the liquefied gas from the main pressurized container is led through a short length of tubing tangentially into the swirl ring.
  • the upper end of the expansion chamber is closed by a perforated cap which permits the exhaust of the small portion of the liquefied gas that has boiled off and which does not get recondensed on the fibrous packing.
  • the lower end of the expansion chamber is closed by a cap having a short outlet spout attached to it.
  • the initial liquefied gas flow immediately reduces the fibrous wool to the temperature of the gas. In this manner the wool becomes an ideal condenser and filter for the gaseous mist.
  • the condensed gas drains to the bottom of the expansion chamber where it joins the main liquid flow through the outlet tube. This outfiow is gentle in contrast with the turbulent fog bound flow that was characteristic of the pouring operation prior to my invention.
  • the invention is shown as having an internally threaded coupling nut 12 which attaches to the valved outlet of a pressurized liquefied gas container (not shown).
  • a pressurized liquefied gas container (not shown).
  • Leading away from the nut 12 is a short length of tubing 14 which passes through the wall and into the interior of the expansion chamber 18.
  • This chamber 18 is a long cylindrical member preferably having walls formed of a good heat insulating material.
  • annular swirl ring 22 affixed to the end of the inlet line 14.
  • the inlet line 14 intersects the swirl ring 22 at an angle such as to Acause the liquefied gas to enter the swirl ring 22 tangentially.
  • the swirl ring 22 further assures a more uniform flow of the evaporated gas through the interior of the expansion chamber 18.
  • a fibrous material 24 Within chamber 18, including the interior of swirl ring 22, there is loosely packed a mass of a fibrous material 24.
  • the material 24 should be stainless steel wool or other non-absorbent and non-corroding material.
  • the fibrous material 24 is employed since it provides an extremely large surface area on which the evolving mist can collect and be condensed. During the pouring it will be obvious that the temperature of the material 24 almost immediately is reduced to the temperature of the liquefied gas. The accumulated condensate gravitates to the bottom of chamber 18 and thereby further provides an absorbent bath for the expanding mist of gas. The action of the fibrous material 24 and the condensate is thus seen to be cumulative.
  • the expansion chamber 18 is fitted with a perforated cap 28 which vents to the atmosphere. From the lower end of chamber 18 extends an outfiow tube 26 fitted into a mating hole in the bottom plate 30. Both the cap 28 and the plate 30 are formed of insulating material as are the sidewalls of the chamber 18.
  • a filter screen 32 is placed across the bottom plate 30 and the opening to exit tube 26. This screen 32 will prevent any loose fibers of the steel wool 24 from passing out of the device with the liquefied gas.
  • a device for the removal of liquefied gas from a zone of high pressure to a zone of reduced pressure cornprising:
  • an expansion chamber having an upper cap and a lower closure cap
  • an inlet duct discharging liquefied gas from the zone of high pressure into the expansion chamber at a region remote from the vented cap;
  • liquid outlet means at the lower end of the chamber
  • bale means comprises a swirl ring centrally within the expansion chamber and wherein the inlet duct discharges the liquefied gas tangentially to the interior of the swirl ring.
  • liquid outlet means includes a duct receiving fluid through an opening in the lower closure cap
  • filter screen means across the opening in the lower closure cap precluding the passage therethrough of any of the fibrous material.
  • fibrous material is non-absorbent, non-corroding steel wool.
  • vent means in the upper cap includes a plurality of perforations to 5 permit the ready escape of the vapors from the expansion chamber.

Description

Jan. 10, 1967 s. FEUERSTEIN DEVICE FOR POURING LIQUEFIED GA3 Filed Aug. 23, 1965 .2g/g 2016,14... w?
United States Patent Office 3,296,809 DEVICE FOR POURING LlQUEFIlED GAS Seymour Feuerstein, Los Angeles, Calif., assigner to The Aerospace Corporation, Los Angeles, Calif., a corporation of California Filed Aug. 23, 1965, Ser. No. 481,844 6 Claims. (Cl. 62-55) This invention relates to a device providing the rapid and lowloss removal of liquefied gas from a pressurized vessel to an open container.
Following conventional practice, liquefied gases, as oxygen and carbon dioxide, are stored in pressurized tanks to facilitate transporting and handling and to prevent loss due to evaporation. When it is desired to fill an open Dewar or similar vessel with the liquefied gas a small diameter tube is attached to the valved outlet of the pressure tank. On opening the valve the liquid gas is ejected from the tank outwardly through the tube. Being suddenly relieved of its confining pressure a portion of the gas vigorously boils and evaporates within the tube. As it boils ofi a substantial quantity of mist or fog is created. Although a portion of the mist consists of condensed atmospheric moisture, a greater portion of it is made up of the vapor of the previously liquefied gas.
The present invention has as its primary purpose the reduction in the loss of the liquefied gas through boil-ofi. In accomplishing its purpose there is provided both econ omy and convenience in the near elimination of the massive clouds of fog which heretofore accompanied the pouring operation. v
The purpose of this invention is achieved through the provision of a substantially closed expansion chamber serving to confine the boiled-off gas. Within the charnber is provided a condensing media which acts to recondense the gas and to collect the mist entrained in the evaporated gas.
The invention consists essentially of an insulated cylindric expansion chamber substantially filled with a loosely packed fibrous material such as stainless steel wool. Within the chamber is an open ended swirl ring into which the liquefied gas is initially admitted. The liquefied gas from the main pressurized container is led through a short length of tubing tangentially into the swirl ring.
The upper end of the expansion chamber is closed by a perforated cap which permits the exhaust of the small portion of the liquefied gas that has boiled off and which does not get recondensed on the fibrous packing. The lower end of the expansion chamber is closed by a cap having a short outlet spout attached to it.
In the pouring operation in which the present invention is utilized, the initial liquefied gas flow immediately reduces the fibrous wool to the temperature of the gas. In this manner the wool becomes an ideal condenser and filter for the gaseous mist. The condensed gas drains to the bottom of the expansion chamber where it joins the main liquid flow through the outlet tube. This outfiow is gentle in contrast with the turbulent fog bound flow that was characteristic of the pouring operation prior to my invention.
It is reasonably estimated that by the use of the present invention the rate of fiow of liquefied gas into a Dewar vessel can be doubled while the loss of gas through evaporation is reduced one-half.
These and additional features and advantages of the invention will become apparent from the following dey Maasai Patented Jan. l0, 1957 Referring to the drawing, the invention is shown as having an internally threaded coupling nut 12 which attaches to the valved outlet of a pressurized liquefied gas container (not shown). Leading away from the nut 12 is a short length of tubing 14 which passes through the wall and into the interior of the expansion chamber 18. This chamber 18 is a long cylindrical member preferably having walls formed of a good heat insulating material.
There is suspended centrally within chamber 18 an annular swirl ring 22 affixed to the end of the inlet line 14. As seen in the drawing, the inlet line 14 intersects the swirl ring 22 at an angle such as to Acause the liquefied gas to enter the swirl ring 22 tangentially. Thus the entering fluid flow is caused to swirl within the ring 20 to facilitate the dissipation of its energy. The swirl ring 22 further assures a more uniform flow of the evaporated gas through the interior of the expansion chamber 18.
Within chamber 18, including the interior of swirl ring 22, there is loosely packed a mass of a fibrous material 24. For better eliiciency the material 24 should be stainless steel wool or other non-absorbent and non-corroding material. The fibrous material 24 is employed since it provides an extremely large surface area on which the evolving mist can collect and be condensed. During the pouring it will be obvious that the temperature of the material 24 almost immediately is reduced to the temperature of the liquefied gas. The accumulated condensate gravitates to the bottom of chamber 18 and thereby further provides an absorbent bath for the expanding mist of gas. The action of the fibrous material 24 and the condensate is thus seen to be cumulative.
At its top, the expansion chamber 18 is fitted with a perforated cap 28 which vents to the atmosphere. From the lower end of chamber 18 extends an outfiow tube 26 fitted into a mating hole in the bottom plate 30. Both the cap 28 and the plate 30 are formed of insulating material as are the sidewalls of the chamber 18.
As a precautionary measure a filter screen 32 is placed across the bottom plate 30 and the opening to exit tube 26. This screen 32 will prevent any loose fibers of the steel wool 24 from passing out of the device with the liquefied gas.
With the present construction, all the boilofi from the liquefied gas is caused to pass through a large volume of the matted fibrous material 24. In this manner a high percentage of this mist or fog is recondensed. It will be apparent then that the configuration of the expansion chamber 18 and the swirl ring (or baffle) 22 can be varied with respect to each other to provide other forms of the invention.
While only a single form of my invention is described it will be obvious that it is capable of modification and change within the scope of the following claims.
I claim:
1. A device for the removal of liquefied gas from a zone of high pressure to a zone of reduced pressure cornprising:
an expansion chamber having an upper cap and a lower closure cap;
vent means in the upper cap freely communicating the interior of the expansion chamber with the atmosphere;
an inlet duct discharging liquefied gas from the zone of high pressure into the expansion chamber at a region remote from the vented cap;
liquid outlet means at the lower end of the chamber;
a fibrous material loosely packed within and substantially filling the interior of the expansion chamber; and
baflie means within the expansion chamber dispersing the liquefied gas and its vapors discharged from the inlet duct.
2. A device as defined in claim 1 wherein the bale means comprises a swirl ring centrally within the expansion chamber and wherein the inlet duct discharges the liquefied gas tangentially to the interior of the swirl ring.
3. A device as defined in claim 1 wherein the liquid outlet means includes a duct receiving fluid through an opening in the lower closure cap; and
filter screen means across the opening in the lower closure cap precluding the passage therethrough of any of the fibrous material.
4. A device as defined in claim 1 wherein the fibrous material is non-absorbent, non-corroding steel wool.
5. A device as defined in claim 1 wherein the expansion chamber, the upper cap and lower cap are formed of materials having a low thermal conductivity.
6. A device as defined in claim 1 wherein the vent means in the upper cap includes a plurality of perforations to 5 permit the ready escape of the vapors from the expansion chamber.
References Cited by the Examiner UNITED STATES PATENTS 10 3,044,270 7/ 1962 Biever 62-55 3,130,555 4/ 1964 Haettinger 62-55 3,201,947 8/1965 Post et al. 62-55 3,206,939 9/ 1965 Wilson 62-55 LLOYD L. KING, Primary Examiner.

Claims (1)

1. A DEVICE FOR THE REMOVAL OF LIQUEFIED GAS FROM A ZONE OF HIGH PRESSURE TO A ZONE OF REDUCED PRESSURE COMPRISING: AN EXPANSION CHAMBER HAVING AN UPPER CAP AND A LOWER CLOSURE CAP; VENT MEANS IN THE UPPER CAP FREELY COMMUNICATING THE INTERIOR OF THE EXPANSION CHAMBER WITH THE ATMOSPHERE; AN INLET DUCT DISCHARGING LIQUEFIED GAS FROM THE ZONE OF HIGH PRESSURE INTO THE EXPANSION CHAMBER AT A REGION REMOTE FROM THE VENTED CAP; LIQUID OUTLET MEANS AT THE LOWER END OF THE CHAMBER; A FIBROUS MATERIAL LOOSELY PACKED WITHIN AND SUBSTANTIALLY FILLING THE INTERIOR OF THE EXPANSION CHAMBER; AND BAFFLE MEANS WITHIN THE EXPANSION CHAMBER DISPERSING THE LIQUEFIED GAS AND ITS VAPORS DISCHARGED FROM THE INLET DUCT.
US481844A 1965-08-23 1965-08-23 Device for pouring liquefied gas Expired - Lifetime US3296809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US481844A US3296809A (en) 1965-08-23 1965-08-23 Device for pouring liquefied gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US481844A US3296809A (en) 1965-08-23 1965-08-23 Device for pouring liquefied gas

Publications (1)

Publication Number Publication Date
US3296809A true US3296809A (en) 1967-01-10

Family

ID=23913612

Family Applications (1)

Application Number Title Priority Date Filing Date
US481844A Expired - Lifetime US3296809A (en) 1965-08-23 1965-08-23 Device for pouring liquefied gas

Country Status (1)

Country Link
US (1) US3296809A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360947A (en) * 1966-04-27 1968-01-02 Atomic Energy Commission Usa Cryogenic phase separator
FR2177452A1 (en) * 1971-12-30 1973-11-09 Air Liquide Liquefied gas separator - for use in molten metal protective screen equipment
FR2194922A1 (en) * 1972-08-05 1974-03-01 Coats Ltd J Et P
FR2295376A1 (en) * 1974-12-19 1976-07-16 Schmitz Kuehler Baierbrunn METHOD AND DEVICE FOR SHARING A LIQUID-GAS MIXING CURRENT INTO SEVERAL PARTIAL CURRENTS
FR2427565A1 (en) * 1978-06-01 1979-12-28 Uss Eng & Consult METHOD AND APPARATUS FOR ADIABATIC RELAXATION OF COMPRESSED LIQUID AMMONIA FOR SOIL FERTILIZATION
US4336694A (en) * 1979-02-20 1982-06-29 Linde Aktiengesellschaft Spraying system for cryogenic coolants
US4510760A (en) * 1984-03-02 1985-04-16 Messer Griesheim Industries, Inc. Compact integrated gas phase separator and subcooler and process
US5079925A (en) * 1990-04-10 1992-01-14 Union Cagbide Canada Limited Cryogenic apparatus
US5142874A (en) * 1990-04-10 1992-09-01 Union Carbide Canada Limited Cryogenic apparatus
US5636519A (en) * 1996-06-14 1997-06-10 Halliburton Company Fluid commingling chamber for nitrogen processing unit
EP0891945A2 (en) * 1997-07-14 1999-01-20 Praxair Technology, Inc. Apparatus for producing fine snow particles from a flow of liquid carbon dioxide
EP0974554A3 (en) * 1998-07-22 2000-03-15 Praxair Technology, Inc. Horizontal carbon dioxide snow horn with adjustment for desired snow
DE102005044534B3 (en) * 2005-09-17 2007-06-06 Astrium Gmbh Fuel tank for cryogenic liquids

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044270A (en) * 1960-01-18 1962-07-17 Robert E Biever Anti-splash liquid gas filler
US3130555A (en) * 1961-05-02 1964-04-28 Union Carbide Corp Transfer conduit assembly for cryogenic liquid
US3201947A (en) * 1963-09-06 1965-08-24 Little Inc A Cryogenic transport tube incorporating liquefaction apparatus
US3206939A (en) * 1962-12-26 1965-09-21 Union Carbide Corp Cryogenic fluid transfer system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044270A (en) * 1960-01-18 1962-07-17 Robert E Biever Anti-splash liquid gas filler
US3130555A (en) * 1961-05-02 1964-04-28 Union Carbide Corp Transfer conduit assembly for cryogenic liquid
US3206939A (en) * 1962-12-26 1965-09-21 Union Carbide Corp Cryogenic fluid transfer system
US3201947A (en) * 1963-09-06 1965-08-24 Little Inc A Cryogenic transport tube incorporating liquefaction apparatus

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360947A (en) * 1966-04-27 1968-01-02 Atomic Energy Commission Usa Cryogenic phase separator
FR2177452A1 (en) * 1971-12-30 1973-11-09 Air Liquide Liquefied gas separator - for use in molten metal protective screen equipment
FR2194922A1 (en) * 1972-08-05 1974-03-01 Coats Ltd J Et P
FR2295376A1 (en) * 1974-12-19 1976-07-16 Schmitz Kuehler Baierbrunn METHOD AND DEVICE FOR SHARING A LIQUID-GAS MIXING CURRENT INTO SEVERAL PARTIAL CURRENTS
FR2427565A1 (en) * 1978-06-01 1979-12-28 Uss Eng & Consult METHOD AND APPARATUS FOR ADIABATIC RELAXATION OF COMPRESSED LIQUID AMMONIA FOR SOIL FERTILIZATION
US4336694A (en) * 1979-02-20 1982-06-29 Linde Aktiengesellschaft Spraying system for cryogenic coolants
US4510760A (en) * 1984-03-02 1985-04-16 Messer Griesheim Industries, Inc. Compact integrated gas phase separator and subcooler and process
US5079925A (en) * 1990-04-10 1992-01-14 Union Cagbide Canada Limited Cryogenic apparatus
US5142874A (en) * 1990-04-10 1992-09-01 Union Carbide Canada Limited Cryogenic apparatus
US5636519A (en) * 1996-06-14 1997-06-10 Halliburton Company Fluid commingling chamber for nitrogen processing unit
EP0891945A2 (en) * 1997-07-14 1999-01-20 Praxair Technology, Inc. Apparatus for producing fine snow particles from a flow of liquid carbon dioxide
US5868003A (en) * 1997-07-14 1999-02-09 Praxair Technology, Inc. Apparatus for producing fine snow particles from a flow liquid carbon dioxide
EP0891945A3 (en) * 1997-07-14 2000-01-12 Praxair Technology, Inc. Apparatus for producing fine snow particles from a flow of liquid carbon dioxide
EP0974554A3 (en) * 1998-07-22 2000-03-15 Praxair Technology, Inc. Horizontal carbon dioxide snow horn with adjustment for desired snow
DE102005044534B3 (en) * 2005-09-17 2007-06-06 Astrium Gmbh Fuel tank for cryogenic liquids
US20090134170A1 (en) * 2005-09-17 2009-05-28 Kei Philipp Behruzi Propellant Tank for Cryogenic Liquids
US8381938B2 (en) 2005-09-17 2013-02-26 Astrium Gmbh Propellant tank for cryogenic liquids

Similar Documents

Publication Publication Date Title
US3296809A (en) Device for pouring liquefied gas
US3788096A (en) Cryogenic gas traps
US3769806A (en) Method of and apparatus for cryopumping gas
US1938036A (en) Means for removing liquid mixtures from pressure vessels
US3648018A (en) Transfer device for cryogenic fluids
US1821549A (en) Apparatus for dehydrating and purifying gases
US2665556A (en) Insulated bayonet tube vaporizer
US4122684A (en) Method for the recovery of volatile liquids
DE1539159B2 (en) Sorting pump
US3225825A (en) Cold trap
GB917179A (en) Apparatus for storing and dispensing liquefied gases
US3360947A (en) Cryogenic phase separator
GB637514A (en) Liquid oxygen converters
US2949015A (en) Cold trap
KR900000696A (en) Method and apparatus for sampling cryogenic liquids
US2214932A (en) Barometric multijet condenser
US3357256A (en) Sampling line for cryogenic liquid mixtures
US2659452A (en) Condensate trap
US3151467A (en) Process and apparatus for the filling, transportation and dispensing of hazardous fluids
US3258196A (en) Ultrahigh vacuum pump
US3345807A (en) Air and liquid separating device
GB816331A (en) Improvements in liquid-gas separators
US2986010A (en) Purge means for storage tank
US3648472A (en) Cryogenic fluid discharge muffler
US2107313A (en) Hand operated fire extinguisher