WO2014039535A1 - Système de distribution continue d'écoulement pour fluides cryogéniques - Google Patents

Système de distribution continue d'écoulement pour fluides cryogéniques Download PDF

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Publication number
WO2014039535A1
WO2014039535A1 PCT/US2013/058027 US2013058027W WO2014039535A1 WO 2014039535 A1 WO2014039535 A1 WO 2014039535A1 US 2013058027 W US2013058027 W US 2013058027W WO 2014039535 A1 WO2014039535 A1 WO 2014039535A1
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WO
WIPO (PCT)
Prior art keywords
cryogen
vessel
cart
valve
vessels
Prior art date
Application number
PCT/US2013/058027
Other languages
English (en)
Inventor
John Kendall Sanders
William M. Fisher
Michael Phillip Day
Original Assignee
Creare Incorporated
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 Creare Incorporated filed Critical Creare Incorporated
Publication of WO2014039535A1 publication Critical patent/WO2014039535A1/fr

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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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F17C13/086—Mounting arrangements for vessels for Dewar vessels or cryostats
    • 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
    • F17C2205/01—Mounting arrangements
    • F17C2205/0103—Exterior arrangements
    • F17C2205/0111—Boxes
    • 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
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more vessels
    • F17C2205/0134—Two or more vessels characterised by the presence of fluid connection between vessels
    • F17C2205/0146—Two or more vessels characterised by the presence of fluid connection between vessels with details of the manifold
    • 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
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/0157—Details of mounting arrangements for transport
    • F17C2205/0161—Details of mounting arrangements for transport with wheels
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • 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
    • F17C2223/0169—Liquefied gas, e.g. LPG, GPL subcooled
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/032—Control means using computers
    • 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
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/06—Fluid distribution
    • F17C2265/063—Fluid distribution for supply of refueling stations
    • 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
    • F17C2270/00—Applications
    • F17C2270/05—Applications for industrial use
    • F17C2270/0509—"Dewar" vessels

Definitions

  • the invention relates to a portable cart mounted storage and delivery apparatus for subcooled cryogen used in a manufacturing environment.
  • the vent valve on the full vessel is left open and the operator needs to monitor the temperature of the boiling liquid in the vessel until it drops from 22 psig and 86K to the saturation temperature at 0 psig, which for liquid nitrogen is 77K. This process normally takes 25 - 45 minutes.
  • liquid nitrogen can be delivered at 22 psig at 77K instead of 86K, it is a subcooled liquid.
  • the subcooled liquid can absorb a greater amount of heat before it will begin to boil than liquid at 86K, thus permitting a higher liquid quality to reach the tool tip.
  • cryogen supply utilizing more than one cryogen supply vessel, and in the event that the cryogen in the vessel being used to supply cryogen warms to a preselected temperature, the supply can automatically switch to a waiting vessel which has been pre- subcooled and is ready for use.
  • cryogen supply utilizing more than one cryogen supply vessels, and in the event that the cryogen in the vessel being used to supply cryogen becomes depleted, the supply can automatically switch to a waiting vessel.
  • cryogen supply utilizing more than one cryogen supply vessel, and when the cryogen in a first vessel being used to supply cryogen to a point of use becomes depleted, the supply can automatically be switched to a second vessel while the first vessel is coupled to a cryogen source to be refilled, subcooled and pressurized for later use.
  • Figure 1 shows a cryogen delivery cart.
  • Figure 2 is a detail view of the control panel on the delivery cart of Figure 1.
  • FIG 3 is a schematic representation of the cryogen handling system using the delivery cart of Figure 1.
  • FIG. 1 shows a cryogen delivery cart generally designated by the reference numeral 10.
  • the cart may comprise four sides 12 (only two shown), a top 13 and a bottom 14 that form an enclosed container.
  • One of the sides 12 may comprise two doors 16, 17 that are hinged so that they may be opened to allow access to the vessels and mechanisms in the cart.
  • the cart may be mounted on wheels 19 so that it may be easily wheeled around the factory floor to desired locations as required.
  • a tank 21 of pressurizing gas such as helium or nitrogen may be mounted to the side of the cart and coupled by a gas supply line 25 to the cryogen filled tanks 22, 23 carried by the cart to pressurize the cryogen filled tanks 22, 23 as explained in detail below.
  • the pressurizing gas tank 21 may be carried inside of the cart.
  • An emergency stop (E-Stop) button 24 may be mounted on the face of one of the doors 16, and a control panel and display 26 may be mounted on the face of the other door 17.
  • the cart 10 has a fill port 27 that may be coupled to a supply hose 28 from a cryogen supply source 30 at a cryogen fill station in the factory, and a delivery port 32 that may be coupled to a machine delivery line 33 to connect liquid cryogen carried by the cart to machinery where the cryogen will be used.
  • the liquid cryogen may comprise liquid argon, liquid nitrogen, liquid oxygen, liquid helium, or other liquid gas having the desired thermal characteristics.
  • the fill port 27 may be a conventional Dewar connection flare fitting type of fill port.
  • the delivery port 32 may be a vacuum insulated bayonet style filling port designed for low heat leak.
  • the cart 10 may have a power cord 34 for connection to a power source to power the electronic controls and mechanical hardware on the cart. Alternatively, the cart 10 may be powered by batteries which are carried by the cart.
  • FIG. 2 is a detail view of the control panel and display 26 on the delivery cart of
  • the control panel 26 may have command input receivers such as buttons 40-45 on a touch screen interface or switches for controlling the various functions of the cart, and a display 46 that shows the status of each of the storage vessels 22, 23 carried by the cart.
  • the AUTO FILL button 40 is used to initiate and control the filling and subcooling of the gas in the vessels 22, 23.
  • the AUTO RUN/STOP button 41 is a single button that is used to both run the operation of the cart when it is stopped, and stop the operation of the cart when it is running. Depressing the Status button 42 will bring up the AUTO RUN screen that is shown. Depressing the Flow Chart button 43 will switch screens to bring up a display of Flow of cryogen from the vessels 22 and 23 vs. Time.
  • the display 46 may include for each storage vessel carried by the cart 10 a Level indicator 50 to indicate the level of cryogen in the vessel as a percentage of the vessel that is filled with cryogen, a Weight indicator 51 to indicate the weight of the cryogen in the vessel, a Temperature indicator 52 to indicate the temperature of the cryogen in the vessel, a Pressure indicator 53 to indicate the pressure of the cryogen in the vessel a Flow Rate indicator 54 to indicate the flow rate of the cryogen from the vessel, and a Status indicator 55 to indicate whether the vessel is active or inactive.
  • a Level indicator 50 to indicate the level of cryogen in the vessel as a percentage of the vessel that is filled with cryogen
  • a Weight indicator 51 to indicate the weight of the cryogen in the vessel
  • a Temperature indicator 52 to indicate the temperature of the cryogen in the vessel
  • a Pressure indicator 53 to indicate the pressure of the cryogen in the vessel
  • a Flow Rate indicator 54 to indicate the flow rate of the cryogen from the vessel
  • a Status indicator 55 to indicate whether the vessel is active or inactive
  • the display 46 includes measurement indicia which may be in the form of a vertical bar graph 57 for each of the vessels carried by the cart 10 that indicates the level of cryogen in each vessel.
  • the bar graph 57 on the left shows that Dewar 1 is full, and the bar graph 57 on the right shows that Dewar 2 about 65% full.
  • the bar graph 57 displays may be color coded to indicate whether the vessel is currently supplying cryogen to a point of use, or is being refilled with cryogen, or is in a standby mode.
  • FIG 3 is a schematic representation of a liquid cryogen handling system using the delivery cart 10 of Figure 1.
  • a bulk cryogen supply tank 30 may be located at the manufacturing facility, and may be a 1,000 to 50,000 gallon or larger tank that is mounted at a permanent location at the facility.
  • the bulk cryogen supply tank 30 is not part of the delivery cart 10.
  • the function of the bulk cryogen supply tank 30 may also be performed by a liquid cryogen generating apparatus or a rented liquid nitrogen Dewar vessel.
  • the bulk cryogen supply tank 30 may be coupled to the delivery cart 10 via the fill port 27.
  • the cart may contain two Dewar vessels, a first vessel 22 and a second vessel 23.
  • Each vessel may have a vent port 61 and a liquid port 62 by which the vessel may be charged with a gas or a liquid.
  • the vent port 61 and the liquid port 62 on a standard Dewar vessel may be fitted with valves 63, 64, respectively, that for this application may be locked in the open position.
  • Each vessel 22, 23 may have a pressure relief valve 66 so that excess pressure in the vessel can be safely vented to atmosphere.
  • the pressurizing gas tank 21 may be coupled through the gas supply line 25 and a regulator 65 to a pressurization line 67 that may be coupled through a first solenoid pressurization valve 68 to the vent port 61 on the first vessel 22 and through a second solenoid pressurization valve 69 to the second vessel 23.
  • the line coupling the pressurization line 67 to the first vessel 22 may include a solenoid controlled vent valve 72 and the line coupling the pressurization line 67 to the second vessel 23 may include a solenoid controlled vent valve 73.
  • the pressurization line 67 may have a pressure relief valve 74.
  • a fill line 76 may be coupled to the bulk cryogen supply through the supply hose
  • the fill line 76 may have a pressure relief valve 77.
  • the fill line 76 may be coupled to the first vessel 22 through a first solenoid fill valve 78 and to the second vessel 23 through a second solenoid fill valve 79.
  • a first delivery line 82 from the first vessel 22 may be coupled to a second delivery line 83 from the second vessel by a T-fitting 87 that may be coupled to a final delivery line 86.
  • Flow through the first delivery line 82 may be controlled by a first delivery valve 84 and flow through the second delivery line 83 may be controlled by a second delivery valve 85.
  • the final delivery line 86 may be vented by a pressure relief valve 88 and a solenoid controlled vent valve 89.
  • Flow from the final delivery line 86 may be controlled by a final delivery valve 91 located nearest the point of use.
  • the final delivery line 86 terminates at the delivery port 32, and the delivery port couples to the machine delivery line 33 that is coupled to a machine (the point of use) on the factory floor.
  • the fill line 76, the first and second fill valves 78 and 79, the delivery lines 82 and 83, the delivery valves 84 and 85, the final delivery line 86, the final delivery valve 91, and the machine delivery line 33 may be vacuum jacketed between the cryogen tanks 22, 23 and the point of use to retard heat transfer between the cryogen in the lines and valves and ambient.
  • the cart 10 may contain a programmable logic controller (PLC) 90 that is used to control the valves in the cart for filling the first and second vessels 22, 23 at the cryogen filling station, subcooling the cryogen in the vessels 22 and 23, and delivering the cryogen from the vessels 22 and 23 to the point of use on the factory floor.
  • PLC programmable logic controller
  • Each of the vessels 22, 23 may be supported by a scale or strain gage 94 which reads the weight of the vessel back to the PLC 90, and each of the vessels may have a thermocouple 95 that reads the temperature of the cryogen, and a pressure sensor 96 that reads the pressure in the ullage space of each vessel 22 and 23 back to the PLC 90.
  • Each of the pressurization valves 68 and 69, the fill valves 78 and 79, the delivery valves 84, 85, and the vent valves 72, 73 and 89 may be controlled by the PLC 90, and the status of the valves is communicated by the PLC 90 to the display 26 on the exterior of the cart 10.
  • the cart 10 may be wheeled to the cryogen filling station at a first location.
  • the supply hose 28 from the bulk cryogen supply may be connected to the fill port 27 on the cart.
  • the AUTO FILL button 40 may then be pushed on the control panel 26. Pushing the AUTO FILL button 40 causes the PLC to open the first fill valve 78 leading to the first vessel 22 and to close the second fill valve 79 leading to the second vessel 23, and also to close both pressurization valves 68 and 69, the second vent valve 73, and the first and second delivery valves 84 and 85, all without operator intervention.
  • the first vessel 22 is filled with saturated 22 psig (86 Kelvin) liquid cryogen by transferring it from the cryogen supply tank 30 at the filling station.
  • the first vent valve 72 on the first vessel is left open and the temperature of the boiling liquid in the first vessel is monitored until it drops to the saturation temperature at 0 psig, which for liquid nitrogen is 77K.
  • the first vent valve 72 is closed, the first pressurization valve 68 is opened, and the ullage space in the first vessel is pressurized to 22 psig using pressurized gas from the tank 21.
  • the cryogen in the first vessel 22 When the cryogen in the first vessel 22 reaches 77K and 22 psig, the cryogen in the first vessel 22 is subcooled. The first pressurization valve 68 is then closed, the second fill valve 79 is opened and the second vent valve 73 is opened to allow the second vessel 23 to be filled with saturated 22 psig (86 Kelvin) liquid cryogen. When the second vessel 23 is full, the vent valve 73 on the second vessel 23 is left open and the temperature of the boiling liquid in the second vessel is monitored until it drops to 0 psig, and the temperature of the liquid nitrogen is 77K.
  • saturated 22 psig 86 Kelvin
  • the second vent valve 73 When the cryogen in the second vessel 22 reaches 77K and 0 psig, the second vent valve 73 is closed, the second pressurization valve 69 is opened and the ullage space in the second vessel is pressurized to 22 psig using pressurized gas from the tank 21. The cryogen in the second vessel 23 is now subcooled. The filling of the vessels 22, 23 with cryogen and the subcooling of the cryogen takes place under the control of the PLC 90, without operator intervention.
  • the liquid cryogen can be delivered at 22 psig at 77K instead of 86K, it is a subcooled liquid.
  • the subcooled liquid can absorb a certain amount of heat before it will begin to boil again, thus permitting a higher liquid quality to reach the point of use.
  • the temperature of the liquid in the first and second vessels 22, 23 is then monitored either automatically in the AUTO RUN mode, or manually by observing the control panel 26 to ensure that the vessel supplying cryogen to the point of use does not warm up and approach saturated conditions.
  • the delivery port 32 on the cart is coupled to the machine delivery line 33 for the machinery where the cryogen will be used (the point of use).
  • the point of use may be a machining or milling operation performed by a computer numerical controlled machine tool, or some other manufacturing operation that is performed at cryogenic temperatures.
  • a data line 97 may also be coupled between the machinery at the point of use and the PLC 90 on the cart. When the operator initiates the operation of the machinery, a signal is sent via the data line 97 to the PLC on the cart and delivery of the cryogen begins. Alternatively, the AUTO RUN button 41 on the control panel 26 may be depressed.
  • Either operation opens the first delivery valve 84 in the first delivery line 82 connected to the first vessel 22, and cryogen flows to the delivery port 32 and to the machine delivery line 33 for the machinery.
  • the quantity and temperature of the cryogen in the first vessel 22 may be monitored and displayed on the control panel 26. Should the temperature of the cryogen in the first vessel 22 rise above 77K, or should the supply of cryogen in the first vessel 22 become depleted, the PLC 90 closes the first delivery valve 84 and opens the second delivery valve 85. Cryogen from the second vessel 23 now flows through the second delivery line 83, through the final delivery line 86, and through the delivery port 32 to the machine delivery line 33.
  • the first vessel 22 When the first vessel 22 is depleted and the second vessel 23 begins to deliver cryogen to the point of use, the first vessel 22 may be replenished with cryogen from the bulk factory supply 30 provided that a connection can physically be made between the bulk supply 30 and the fill port 27 on the cart.
  • the process of filling the first vessel 22 is initiated by depressing the AUTO FILL button on the control panel 26.
  • the first vessel 22 will be filled with cryogen, the cryogen will be subcooled, and the cryogen will be pressurized under the control of the PLC 90 following the process described above while the second vessel 23 continues to supply cryogen to the point of use.
  • cryogen may be delivered to the machinery first from the first vessel 22, and then from the second vessel 23 using the process described above, until the machining operation is completed, or until the supply of cryogen in the second vessel 23 is depleted.
  • the control panel 26 will indicate that the cryogen on the cart 10 is depleted, and that the vessels 22 and 23 need to be refilled from the bulk cryogen supply 30.
  • the cart described above allows the automated filling of a plurality of cryogen storage vessels on a cart at a bulk filling station, subcooling the cryogen to obtain the maximum cooling from the cryogen at the point of use, and providing the subcooled cryogen sequentially to one delivery line to provide continuous fluid delivery to a remote point.
  • the valves on the cart are controlled by the programmable logic controller (PLC) that can be used to switch the operation of the cart from a refilling mode to a delivery mode, and to switch the source of flow from one vessel to the other.
  • PLC programmable logic controller
  • Pressure control and temperature monitoring permits automatic delivery of subcooled LN2 to the point of use on a factory floor.
  • the cart safely integrates with any new or retrofit cryogenic machine tool system, and provides continuous cryogen delivery using two independently controlled vessels.
  • the cart safely automates cryogen delivery and refilling without distracting the machine operator, and is easily integrated with an existing plant-wide cryogen supply system.
  • the emergency stop and feed hold controls may be integrated with machine tool system through the cart mounted PLC, and the touch screen interface may be used to display liquid levels and flow rates.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Selon l'invention, un chariot est utilisé pour fournir un cryogène liquide à un point d'utilisation. Le chariot contient un premier récipient permettant de recevoir du cryogène liquide saturé d'une source fixe et une première vanne de remplissage permettant de réguler le débit de liquide saturé dans le premier récipient. Le chariot contient de plus une première soupape d'évent permettant d'évacuer le cryogène liquide dans le premier récipient jusqu'à la diminution de la pression du cryogène à la pression de saturation, et une première vanne de mise sous pression permettant l'admission d'un gaz de mise sous pression dans le premier récipient contenant le cryogène liquide à la pression de saturation. Le chariot contient de plus une première vanne de distribution permettant de distribuer du cryogène liquide à la pression de saturation à partir du premier récipient jusqu'à une ligne de distribution finale. Un automate programmable industriel (API) est utilisé pour commander la première vanne de remplissage, la première soupape d'évent, la première vanne de mise sous pression et la première vanne de distribution, le tout sans intervention de l'opérateur.
PCT/US2013/058027 2012-09-07 2013-09-04 Système de distribution continue d'écoulement pour fluides cryogéniques WO2014039535A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261698110P 2012-09-07 2012-09-07
US61/698,110 2012-09-07

Publications (1)

Publication Number Publication Date
WO2014039535A1 true WO2014039535A1 (fr) 2014-03-13

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392608A (en) * 1993-03-26 1995-02-28 The Boc Group, Inc. Subcooling method and apparatus
US5924291A (en) * 1997-10-20 1999-07-20 Mve, Inc. High pressure cryogenic fluid delivery system
US20020157402A1 (en) * 2000-10-13 2002-10-31 Drube Thomas K. Storage pressure and heat management system for bulk transfers of cryogenic liquids
US20050274127A1 (en) * 2004-03-30 2005-12-15 Paul Drube Cryogenic fluid dispensing system
US20110056217A1 (en) * 2009-09-08 2011-03-10 Craig Fennessy Portable gas filling system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392608A (en) * 1993-03-26 1995-02-28 The Boc Group, Inc. Subcooling method and apparatus
US5924291A (en) * 1997-10-20 1999-07-20 Mve, Inc. High pressure cryogenic fluid delivery system
US20020157402A1 (en) * 2000-10-13 2002-10-31 Drube Thomas K. Storage pressure and heat management system for bulk transfers of cryogenic liquids
US20050274127A1 (en) * 2004-03-30 2005-12-15 Paul Drube Cryogenic fluid dispensing system
US20110056217A1 (en) * 2009-09-08 2011-03-10 Craig Fennessy Portable gas filling system

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