US2580710A - Liquid oxygen converter - Google Patents

Liquid oxygen converter Download PDF

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US2580710A
US2580710A US647411A US64741146A US2580710A US 2580710 A US2580710 A US 2580710A US 647411 A US647411 A US 647411A US 64741146 A US64741146 A US 64741146A US 2580710 A US2580710 A US 2580710A
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pressure
liquid
evaporator
reservoir
valve
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William A Wildhack
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Priority to GB3681/47A priority patent/GB637515A/en
Priority to FR944338D priority patent/FR944338A/fr
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    • 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
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0128—Shape spherical or elliptical
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0329—Valves manually actuated
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return valves
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/011—Oxygen
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • 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
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0107—Propulsion of the fluid by pressurising the ullage
    • 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
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/0393—Localisation of heat exchange separate using a vaporiser
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • 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
    • Y10T137/3115—Gas pressure storage over or displacement of liquid
    • Y10T137/3127—With gas maintenance or application
    • Y10T137/313—Gas carried by or evolved from liquid
    • 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
    • Y10T137/6416—With heating or cooling of the system
    • Y10T137/6525—Air heated or cooled [fan, fins, or channels]

Definitions

  • This invention relates to liquid oxygen converters particularly to such converters for systems in which an automatically or manually controlled cycling evaporator may be used for building up pressure by compressing gas over the liquid.
  • a similar design can be used to force gas through the liquid to warm it.
  • the object of this invention is to provide a system for building up pressure in a liquid oxygen converter by using an automatically or manually cycled evaporator to obtain or maintain the pressure of delivery.
  • a further object is to construct apparatus for use in a liquid oxygen or other liquifled gas container 01' converter. for efllcient handling in dispensing such liquid or gas at desired pressures either intermittently or continuously and the rapid attainment of the desired pressures.
  • Fig. 1 illustrates schematically one model in which a cyclic operation was attained
  • Fig. 2 is a schematic diagram of another modification with an optional circuit for warming the entire mass of liquid before using the converter;
  • Fig. 3 is a-schematic diagram of another modification showing a simpler manually controlled cyclic evaporator:
  • Fig. 4 is an end view of the lower reservoirevaporator connection showing the restriction L.
  • the essential characteristic of one form of this invention is an automatically cycling evaporator, in which liquid is drawn from the container into an auxiliary reservoir, and when the reservoir is full, into a flash evaporator, where sudden evaporation of some of the liquid causes a pressure-closing valve to close. Evaporation of the liquid from the auxiliary reservoir in the reservoir or in an evaporating coil then forces gas into the container above the liquid, building up the pressure, or'into the liquid, warming it by condensation.
  • FIG. 1 The schematic diagram shown in Fig. 1 illustrates the system first tried in which a cyclic operation was attained.
  • the component parts are identified in the diagram as follows:
  • the liquid oxygen container has a gas phase connection to a pressure gage K and pressure relief valve J. and a liquid phase connection through a tube A to a main evaporator I and delivery valve H and also through a check valve D and reservoir evaporator E to a flash evaporator G, then through a loaded check valve F to the as phase connection.
  • the flash evaporator G is also connected through a pressure closing valve C to a manual valve B opening to the atmosphere.
  • flash evaporator is defined as a liquid evaporator constructed with excessive evaporating capacity so as to operate with relatively high speed.
  • the pressure-closing .valve C is open.
  • the manual valve B is opened, liquid is forced up through the tube A, past the check valve D into the evaporator reservoir E. Gas from the vapor phase is prevented from escaping by the check valve F. Any liquid which evaporates during the filling of the reservoir passes out through the pressure-closing valve and the open manual valve .to the atmosphere.
  • the reservoir E is filled, liquid oxygen spills over into the flash evaporator G, where it evaporates rapidly, creating a high pressure which causes the pressure closing valve to close.
  • the check valve D prevents the liquid from returning down the tube A, but the check valve F permits the gas to enter the space above the liquid.
  • the liquid in the reservoir E continues to evaporate, at a rate determined by the heat absorption, and is forced into the container, compressing the gas above the liquid and raising the pressure.
  • the gas compressed over the liquid will condense, in part, forming a layer of liquid at a temperature in equilibrium with the higher pressure.
  • This liquid layer will cool by heat exchange with the lower cooler layer. so that further condensation will occur, slowly lowering the pres.- sure, and causing infrequent repetition of the cycle.
  • valve is preset to close at the desired operating pressure.
  • Valve B is then chosenso that when opened, the restriction to flow is such that a high pressure is created in valve C by the flash" evaporation of the liquid in G.
  • valve C is manually adjustable and is set to close at a relatively low pressure for the first cycle, a somewhat higher pressure for the next cycle, and so on until the desired pressure is attained; then the adjustment is not changed further and subsequent cycling occurs automatically to maintain the pressure.
  • valve B can be omitted since valve C can be closed by the manual adjustment.
  • Some restriction is desirable in the outlet, particularly if the flow capacity of the valve C is large, to ensure that the pressure will become high enough to close the valve when flash evaporation occurs.
  • gas at this pressure is delivered by the converter as required when the supply valve H is opened, the liquid flowing up the tube A, and into the main evaporator coil I, where it evaporates and is warmed to near ambient temperatures.
  • Fig. 2 is a schematic diagram of another form of converter with provision of an optional circuit for warming the entire mass of liquid before using the converter, if desired.
  • the designations of the parts which are similar to those used in the apparatus of Fig. 1 are the same as in that figure.
  • the reservoir E however is insulated and has a restricted opening L in the bottom to the flash evaporator G besides the overflow connection in the top.
  • a pressure evaporator coil P is also provided between the insulated reservoir and the loaded checlc valve F as shown, a.
  • conduit being inserted between the junction of the reservoir with check valve D and with this coil P, and the top of the main evaporator coil I through a manual valve M and check valve 0.
  • the lower end of tube A may be provided with a bubbler N, although this is normally not necessary.
  • the operation in filling the reservoir is as in the mode described above.
  • gas flows out through the pressure closing valve, liquid fills the reservoir E and then spills into the flash evaporator G, where the sudden evaporation creates a pressure suflicient to close the pressure closing valve C.
  • the flash evaporator G also as a pressure-building evaporator.
  • Liquid flows slowly through the restricted bottom connection L from the reservoir to the evaporator, evaporates and forces warmed gas back into the space above the liquid in E, increasing the pressure and forcing the liquid back up the central tube.
  • the check valve F in the pressure evaporator circuit is loaded to a greater value than valve so that flow is preferentially through the check valve 0 into the main evaporator I if the manual valve M in the upper line is open.
  • the bubbler N (a coil of tubing with fine holes, or a porous wall) is recommended only when it is desirable to minimize the tendency for the warm gas bubbles to rise into the gas phase without cooling, thereby forming a warm layer on top of the liquid, and creating a pressure in excess of that corresponding to the average temperature of the liquid.
  • the reservoir E may be vented directly through the manual valve 13, omitting the pressure closing valve C.
  • the evaporator G may also be omitted, particularly if the reservoir is poorly insulated; heat absorbed by the liquid in the reservoir will increase its pressure and force it through the liquid warming circuit. In a preferred construction, however, the evaporator G may be made to surround the reservoir E.
  • the restriction in the connection L may be replaced by a pressure closing valve, so that pressure in the pressure-building circuit is not maintained above a desired value.
  • the operation of the evaporator G is then in accordance with the principles followed in co-pending applications, Serial No. 645,692, filed February 5, 1946, now Patent No. 2,576,985, December 4, 1951, and Serial No. 689,353, flied August 9, 1946, now Patent No. 2,576,984, December 4, 1951.
  • a relatively large reservoir is desirable, since the loss of gas during filling is largely that due to cooling of the circuit and may therefore not be much greater for a large reservoir than for a small one.
  • the number of cycles of operation will obviously be less for a large reservoir.
  • a large reservoir may be wasteful when used only for maintaining pressure by forcing gas into the space above the liquid, since excessive pressures may be generated and force gas out the relief valve.
  • the rate of evaporation in either of the evaporating circuits could then be controlled by appropriate restrictions. Since the rate of evaporation desired for maintaining pressure may be only a liter or so per minute, whereas the rate desired for building up pressure initially by warming the liquid might be several hundred liters per minute, it is apparent that the same rate of efilux of liquid from the reservoir may not be desirable under the two conditions. If the reservoir is small, the pressure evaporator may be able to evaporate its entire charge without increasing the pressure to excessive values.
  • the pressure warming circuit shown can be used alone.
  • the pressure evaporator circuit may be needed, since the liquid warming process will usually not warm the liquid uniformly, and the pressure will decrease as heat interchange occurs.
  • the characteristic feature of the oxygen converters described above is a cyclic evaporator for rapid attainment of operating pressure.
  • FIG. 3 A modified form of converter omitting the automatic cycling feature and making the system much simpler, is shown in Fig. 3.
  • the manually operated shut-off valve B is opened to allow the small reservoir E to be partly or entirely filled with the liquid forced up into it through the tube A and check valve D by the residual pressure in the gas phase of the container.
  • Valve B is then closed and the evaporation of the liquid in reservoir E gradually builds up the pressure as heat is absorbed from the atmosphere and drives the warmed liquid in the reservoir through the warming and evaporating coil I into the liquid phase in the container to ultimately raise the pressure in the gaseous phase and the temperature of the liquid phase sufficiently to provide for a considerable supply of the oxygen in gaseous form when the supply valve is opened.
  • the supply pressure becomes too low, the supply valve is closed and a new pressure building cycle is again initiated by opening the manually operated valve B;
  • Pressure build-up apparatus for liquid oxygen converters comprising a liquid oxygen container, a pressure build-up circuit having a reservoir evaporator connected to the liquid phase of said container through a check valve, a flash evaporator, a conduit from said reservoir to said flash evaporator, a conduit connected between said container and said flash evaporator for conducting the gas generated under pressure in said flash evaporator to said container through a non-return check valve, and a pressure closing valve connected to said flash evaporator and opening to the atmosphere for cyclic operation to cause liquid to flow into said reservoir evaporator and then into saidflash evaporator whenever the pressure therein falls below the pressure in said container.
  • Pressure build-up and supply apparatus for liquid oxygen converters comprising a liquid oxygen container having a cap fitting, a short tube passing through said cap fitting into the gas phase in said container, a long tube passing through said cap fitting and extending into the liquid phase in said container, a pressure buildup circuit including a check valve for controlling flow out of said long tube, a reservoir evaporator for receiving said flow, a fiash evaporator connected to an overflow conduit from said reservoir evaporator and by another conduit through a loaded check valve to said short tube for conducting thegas generated under high pressure in said flash evaporator to the gas phase in said container, a pressure closing valve connected to said flash evaporator and opening to the atmosphere for causing flow of liquid into said reservoir evaporator and from there by overflow into said flash evaporator whenever the pressure in said flash evaporator falls below the pressure in said container, and a supply circuit having an evaporator and warming coil and a supply valve connected to said long tube.
  • Pressure build-up and supply apparatus for liquid oxygen converters comprising a liquid oxygen container, a pressure build-up circuit having an insulated reservoir with a tube extending to the bottom of said reservoir connected to the liquidphase in said container through a check valve for receiving liquid oxygen from said container, a flash evaporator connected by a free passage to the top of said reservoir and by a restricted passage to the bottom of said reservoir, a pressure closing valve opening to the atmosphere and connected to said flash evaporator for causing flow of liquid oxygen from said container into said reservoir whenever the pressure in said flash evaporator falls below the pressure in said container, a pressure evaporator connected between said tube in said reservoir and the gas phase in said container through a loaded check valve, a
  • off valve connected at its top, a tube extending from the liquid phase in said container through a check valve to the bottom of said reservoir for delivering liquid oxygen thereto whenever said cut-off valve is opened, a warming and evaporating coil connected at one end to said tube and at its other end to a delivery valve, a conduit extending from the bottom of said reservoir to said other end of said warming and evaporating coil, and a check valve in said conduit for controlling flow of oxygen from said reservoir to said coil.
  • a pressurizing apparatus for liquefied gas systems comprising an insulated container, an evaporator unit for developing pressure in said apparatus, a tube connecting the liquid phase section in the container to said evaporator unit for conveying liquid thereto, a check valve in said tube, a valve to the atmosphere for venting the evaporator unit, and a return conduit containing a check valve connecting the evaporator unit to said tube for delivering the compressed dis charge from said evaporator unit below the surface or the liquid.
  • a cyclic prcssurizing apparatus for liquefied gas systems comprising an insulated container. an evaporator. a tube from the bottom of the liquid in the container connected to said evaporator, a one-way check valve in said tube for passing liquid to said evaporator, an automatic pressure-closingvent valve to the atmosphere connected to said evaporator, said pressure-closing valve being open at low pressures and closed in response to the pressure rise above a preset value, and a return conduit containing a check valve connecting the evaporator to the container.
  • a pressurizing apparatus for liquefied gas systems comprisin an insulated container, an insulated reservoir, a tube from the bottom of the liquid in the container connected to said insulated reservoir, a check valve in said tube, an uninsulated evaporator connected to said insulated reservoir, a valve connected to the evaporator for venting the evaporator to the atmosphere, and a return conduit containing a check valve connecting the reservoir to the container.
  • a pressurizing system for liquefied gas systems comprising an insulated container, an insulated reservoir.a tube from the bottom of the liquid in the container connected through a check valve to said insulated reservoir, an uninsulated evaporator connected by a free passage to the top of said reservoir and by a restricted passage to the bottom of said reservoir, a valve to the atmosphere for venting the evaporator. and a return conduit containing a check valve connectlllp; the reservoir to the container.
  • a pressurizing system for liquefied gas systems comprising an insulated container, an insulated reservoir, a tube from the bottom of the liquid in the container connected through a check valve to said insulated reservoir, an uninsulated evaporator adjoining said reservoir and connected to it by a hole at the bottom of the reservoir and a hole at the top of the reservoir, a valve to the atmosphere for venting the evaporator. and a return conduit containing a check valve connecting the reservoir to the container.
  • a pressurized system for liquefied gas systems comprising an insulated container, an insulated reservoir, a tube from the bottom of the liquid in the container connected through a check valve to said insulated reservoir, an uninsulated evaporator adjoinin said reservoir and connected to it by a restricted opening at the bottom of the reservoir and a hole at the top of the reservoir, a valve to the atmosphere for venting the evaporator, and a return conduit containin a check valve connecting the reservoir to the container.
  • a pressurized apparatus for liquefied gas systems comprising an insulated container, an evaporator, a tube from the bottom of the liquid in the container connected through a check valve to said evaporator, a valve to the atmosphere for venting the evaporator, a return conduit containing a check valve connecting the evaporator to the container, and a supply circuit having an evaporatin and warming coil and a supply valve connected to the liquid phase of the container.
  • a press-urizing system for liquefied gas systems comprising an insulated container, an insulated reservoir, a tube from the bottom of the liquid in the container through a check valve, which prevents return of gas to the container, to said insulated reservoir, an evaporator for developing pressure in the apparatus, a pressureclosing valve connected to the evaporator and normally open to the atmosphere for causing liquid to flow into the reservoir whenever the pressure therein falls below the pressure in said container, a warming coil, a one-way valve, and conduit means for conducting fluid from said reservoir through said one-way valve and warmin coil to the containers, whereby the warmed gas causes an increase in pressure in the container, the cycle being repeated until the pressure in the container is stable above a predetermined value.
  • the apparatus as described in claim 12 including gas distributing means at the open end of said tube within said container.
  • a pressurizing apparatus for liquified gas systems comprising a container, an evaporator, a tube extending from the liquid section in the container to said evaporator, a check valve in said tube, an automatic pressure-loaded valve open to the atmosphere for venting the evaporator below the load pressure of said pressureloaded valve, and a return tube containing a oneway check valve connecting the evaporator to the container.
  • a pressurizin apparatus for liquifled gas systems comprising a container, an evaporator, a tube extending from the bottom of the liquid in the container connected through a check valve to said evaporator, an automatic one-way pressure loaded valve open to the atmosphere for venting the evaporator below the load pressure of said valve, and dual return tubes from the evaporator to the container containing one-way pressure loaded valves closed below the load value, one of said return tube valves being loaded for opening at a higher load value than that of the other return tube valve, the return tube containing the lower loaded valve being connected to the liquid phase section of the container and the return tube containin the higher loaded valve being conneced to the gas phase section of the container.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
US647411A 1946-02-13 1946-02-13 Liquid oxygen converter Expired - Lifetime US2580710A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US647411A US2580710A (en) 1946-02-13 1946-02-13 Liquid oxygen converter
GB3681/47A GB637515A (en) 1946-02-13 1947-02-07 Liquid oxygen converters
FR944338D FR944338A (fr) 1946-02-13 1947-02-13 Perfectionnements aux détendeurs de gaz liquéfiés

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US647411A US2580710A (en) 1946-02-13 1946-02-13 Liquid oxygen converter

Publications (1)

Publication Number Publication Date
US2580710A true US2580710A (en) 1952-01-01

Family

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US647411A Expired - Lifetime US2580710A (en) 1946-02-13 1946-02-13 Liquid oxygen converter

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US (1) US2580710A (fr)
FR (1) FR944338A (fr)
GB (1) GB637515A (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834187A (en) * 1954-09-10 1958-05-13 Union Carbide Corp Refrigerated container for liquefied gases
US2885864A (en) * 1955-10-14 1959-05-12 United Aircraft Prod Heat transfer system using expendable coolant
US2964918A (en) * 1957-03-11 1960-12-20 Union Carbide Corp Method and apparatus for dispensing gas material
US3082690A (en) * 1958-03-28 1963-03-26 Union Carbide Corp Blasting method and apparatus
US3304730A (en) * 1965-06-09 1967-02-21 Robert B Gorham Device to aid pumping of volatile gases
US3440829A (en) * 1963-12-11 1969-04-29 Lab For Electronics Inc Liquified gas delivery system
US3591962A (en) * 1969-03-26 1971-07-13 Systems Capital Corp Cryogenic power source for starting jet engines
US5165246A (en) * 1991-11-15 1992-11-24 Praxair Technology Inc. Transport trailer for ultra-high-purity cryogenic liquids
WO1999019663A1 (fr) * 1997-10-15 1999-04-22 Scott Technologies, Inc. Appareil permettant de prelever le liquide d'un recipient, et procede associe
US6408632B1 (en) 2000-06-28 2002-06-25 Michael D. Cashin Freezer and plant gas system
WO2010017904A3 (fr) * 2008-08-11 2010-08-05 Robert Brockmann Production d'un gaz purifié, notamment pour le contrôle d'étanchéité d'un élément soumis à une pression
US11236863B2 (en) * 2018-01-08 2022-02-01 Ut-Battelle, Llc Automated cryogenic refilling system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1853983A (en) * 1931-07-10 1932-04-12 Mathieson Alkali Works Inc Method of discharging liquefied gas
US2037673A (en) * 1935-01-24 1936-04-14 Union Carbide & Carbon Corp Method and apparatus for effecting the discharge of a volatile liquid
FR829961A (fr) * 1937-03-12 1938-07-18 Sogetec Soc Gen Tech Procédé et dispositifs pour la distribution économique de gaz combustibles
US2257897A (en) * 1939-02-28 1941-10-07 Linde Air Prod Co Method and apparatus for dispensing gas material
US2464835A (en) * 1946-10-02 1949-03-22 Linde Air Prod Co Control system for gas supply apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1853983A (en) * 1931-07-10 1932-04-12 Mathieson Alkali Works Inc Method of discharging liquefied gas
US2037673A (en) * 1935-01-24 1936-04-14 Union Carbide & Carbon Corp Method and apparatus for effecting the discharge of a volatile liquid
FR829961A (fr) * 1937-03-12 1938-07-18 Sogetec Soc Gen Tech Procédé et dispositifs pour la distribution économique de gaz combustibles
US2257897A (en) * 1939-02-28 1941-10-07 Linde Air Prod Co Method and apparatus for dispensing gas material
US2464835A (en) * 1946-10-02 1949-03-22 Linde Air Prod Co Control system for gas supply apparatus

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834187A (en) * 1954-09-10 1958-05-13 Union Carbide Corp Refrigerated container for liquefied gases
US2885864A (en) * 1955-10-14 1959-05-12 United Aircraft Prod Heat transfer system using expendable coolant
US2964918A (en) * 1957-03-11 1960-12-20 Union Carbide Corp Method and apparatus for dispensing gas material
US3082690A (en) * 1958-03-28 1963-03-26 Union Carbide Corp Blasting method and apparatus
US3440829A (en) * 1963-12-11 1969-04-29 Lab For Electronics Inc Liquified gas delivery system
US3304730A (en) * 1965-06-09 1967-02-21 Robert B Gorham Device to aid pumping of volatile gases
US3591962A (en) * 1969-03-26 1971-07-13 Systems Capital Corp Cryogenic power source for starting jet engines
US5165246A (en) * 1991-11-15 1992-11-24 Praxair Technology Inc. Transport trailer for ultra-high-purity cryogenic liquids
WO1999019663A1 (fr) * 1997-10-15 1999-04-22 Scott Technologies, Inc. Appareil permettant de prelever le liquide d'un recipient, et procede associe
US6408632B1 (en) 2000-06-28 2002-06-25 Michael D. Cashin Freezer and plant gas system
US6640555B2 (en) 2000-06-28 2003-11-04 Michael D. Cashin Freezer and plant gas system
WO2010017904A3 (fr) * 2008-08-11 2010-08-05 Robert Brockmann Production d'un gaz purifié, notamment pour le contrôle d'étanchéité d'un élément soumis à une pression
US20110132076A1 (en) * 2008-08-11 2011-06-09 Robert Brockmann Production of a clean gas, in particular for testing a pressurized construction component for leaks
US8661847B2 (en) 2008-08-11 2014-03-04 Robert Brockmann Production of a clean gas, in particular for testing a pressurized construction component for leaks
US11236863B2 (en) * 2018-01-08 2022-02-01 Ut-Battelle, Llc Automated cryogenic refilling system

Also Published As

Publication number Publication date
FR944338A (fr) 1949-04-01
GB637515A (en) 1950-05-24

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