EP0271031A2 - Dispositif pour doser des gaz liquéfiés à bas point d'ébullition - Google Patents

Dispositif pour doser des gaz liquéfiés à bas point d'ébullition Download PDF

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Publication number
EP0271031A2
EP0271031A2 EP87117999A EP87117999A EP0271031A2 EP 0271031 A2 EP0271031 A2 EP 0271031A2 EP 87117999 A EP87117999 A EP 87117999A EP 87117999 A EP87117999 A EP 87117999A EP 0271031 A2 EP0271031 A2 EP 0271031A2
Authority
EP
European Patent Office
Prior art keywords
fleece
container
gas
outlet opening
liquefied 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.)
Granted
Application number
EP87117999A
Other languages
German (de)
English (en)
Other versions
EP0271031A3 (en
EP0271031B1 (fr
Inventor
Franz Dipl.-Ing. Garnreiter (Fh)
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Priority to AT87117999T priority Critical patent/ATE67573T1/de
Publication of EP0271031A2 publication Critical patent/EP0271031A2/fr
Publication of EP0271031A3 publication Critical patent/EP0271031A3/de
Application granted granted Critical
Publication of EP0271031B1 publication Critical patent/EP0271031B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/006—Adding fluids for preventing deformation of filled and closed containers or wrappers
    • 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
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/028—Special adaptations of indicating, measuring, or monitoring equipment having the volume as the parameter
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/066—Plastics
    • 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
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2250/0621—Volume

Definitions

  • the invention relates to a device for metering a low-boiling liquefied gas, which can flow from an outlet opening of a cold-insulated container.
  • Low-boiling liquefied gases are usually stored in cold-insulated containers and can be removed via an outlet opening.
  • small amounts of low-boiling liquefied gases are very difficult to dose, because the gas generated at the outlet opening repeatedly interrupts the continuously flowing liquid flow. Therefore, complex devices have been developed to achieve a continuous liquid gas flow when metering small amounts of liquefied gases.
  • a device for metering small amounts of a low-boiling liquefied gas in which the liquefied gas is in a container which is surrounded by a second container so that there is a space between the containers.
  • the liquid gas can be removed from the container via an outlet opening.
  • Cold gas passes from the inside into the outer container and cools the entire device so deep that the liquid gas in the inner container as little heat as possible is supplied from outside.
  • the cold gas leaves the container via a gas outlet opening in the vicinity of the outlet opening for the liquid gas so that it surrounds the liquid gas flowing out.
  • a gas cushion under increased pressure is built up, the increased pressure of the gas cushion corresponding at least to the total pressure prevailing in the vicinity of the outlet opening.
  • a device for delivering an uninterrupted jet of a cryogenic liquid which has a pressure regulating device containing the cryogenic liquid with an outlet line and a degassing device arranged downstream.
  • the degassing device causes free liquid to leave the device, while cold gas is discharged elsewhere via the degassing device. This creates an uninterrupted jet of the cryogenic liquid.
  • the object of the invention is therefore to design a device for metering low-boiling liquefied gases, which can flow from an outlet opening of a cold-insulated container, in such a way that a laminar liquid gas jet can be removed from the device without considerable outlay on equipment.
  • This object is achieved in that a nonwoven made of natural material, plastic or metal connects to the outlet opening of the container.
  • the device according to the invention consists of a cold-insulated, preferably vacuum-insulated container for low-boiling liquefied gas. At the lower end of the container there is an outlet opening for the liquefied gas, which is provided with the fleece according to the invention made of natural material, plastic or metal.
  • the container is filled with a low-boiling liquefied gas, in particular liquid nitrogen. The liquid gas is fed to the plastic or fleece via the outlet opening and leaves the device in a laminar jet.
  • the low-boiling liquefied gas in the container passes through the outlet opening into the fleece.
  • a separation of the liquid and gas phases takes place in the fleece, so that a laminar flow of liquid gas is released vertically downwards from the fleece, while cold gas is discharged laterally from the plastic or metal fleece.
  • the cold gas does not interfere with the laminar liquid gas flow, so that fine metering of even small amounts of liquid gas is possible.
  • the fleece is preferably cylindrical and tapered on the side facing away from the outlet opening of the container.
  • the fleece is surrounded by a cylindrical, open wall facing away from the outlet opening in such a way that there is a gap between the fleece and the wall of approximately 2 to approximately 30 mm around the fleece.
  • a fine regulating valve is expediently sunk in the liquefied gas at the bottom of the container and is connected to the outlet opening and to a regulating device arranged outside the container. This enables a continuous change in the quantity of the liquefied gas exiting through the outlet opening and thus a precise, continuous metering of the laminar liquid gas flow discharged from the fleece. Since the fine control valve is buried in the liquefied gas, the valve is prevented from icing up.
  • the fine control valve can, for example, be controlled by hand using a simple rod which is connected to the valve and protrudes from the container.
  • control via a servomotor which is connected to the fine regulating valve, proves to be particularly expedient.
  • automation of the device is possible. For example, a predetermined amount of liquefied petroleum gas can be automatically metered into beverage cans, food packs, etc., which are guided beneath the device.
  • the device according to the invention has the advantage over conventional metering devices for liquefied gases that precise metering of even small amounts of low-boiling liquefied gases is possible with only a small outlay on equipment. Due to the perfect separation of the liquid and gas phases in the nonwoven according to the invention, a laminar, easily metered liquid gas jet is generated. The fine control valve sunk in the liquid gas enables a continuous regulation of the liquid gas volume flow in the desired range.
  • the device according to the invention is suitable for metering low-boiling liquefied gases, in particular liquid nitrogen.
  • Liquid nitrogen is often used, especially in the food industry. Nitrogen is often used as an inert gas in food packaging. Frequently, the liquefied gas should also generate a certain internal pressure after the packaging has been closed in order to increase the mechanical resistance of the packaging, for example when stacking one on top of the other.
  • the device according to the invention even small amounts of the liquid gas, for example liquid nitrogen, can be precisely metered in, for example in food packaging.
  • predetermined amounts of liquid nitrogen can be metered in automatically, for example, in beverage cans on filling machines at high work speeds.
  • the device according to the invention can also be used advantageously to solve cooling problems in which only small amounts of liquefied gas are required.
  • the figure shows a longitudinal section through a device according to the invention.
  • the device shown in the figure consists of a vacuum-insulated container (1) for holding the low-boiling liquefied gas (2).
  • the container (1) is open at the top, so that fresh liquid gas (3) can be supplied at the top and exhaust gas (4) can escape.
  • the liquid gas level (5) can be kept constant by controlling the liquid gas supply by means of a conventional automatic control system.
  • the fine regulating valve (6) which has a rigid connection (7) to the regulating device, which is not shown in the figure and is arranged outside the container, is arranged at the bottom of the container (1) and is sunk into the liquid gas (2).
  • the fine control valve (6) can also be controlled manually via the rigid connection (7).
  • a line (9) for liquid gas which is connected to the fine regulating valve (6), passes through the outlet opening (8) and ends at the fleece (10) made of natural material, plastic or metal.
  • the fleece (10) is cylindrical and tapered towards the bottom, so that a thin, laminar liquid gas jet (11) is emitted.
  • the cold gas (12) escapes from the side of the fleece.
  • the fleece (10) is surrounded by a wall (13) in such a way that there is a gap of approximately 15 mm between the fleece and the wall around the web.
  • the cold gas (12) escaping laterally from the fleece is deflected downward in accordance with the arrows (14) and thus surrounds the fleece (10), so that access to atmospheric moisture is avoided and freezing is thus prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Vacuum Packaging (AREA)
EP87117999A 1986-12-10 1987-12-05 Dispositif pour doser des gaz liquéfiés à bas point d'ébullition Expired - Lifetime EP0271031B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87117999T ATE67573T1 (de) 1986-12-10 1987-12-05 Vorrichtung zum dosieren von tiefsiedenden verfluessigten gasen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863642199 DE3642199A1 (de) 1986-12-10 1986-12-10 Vorrichtung zum dosieren von tiefsiedenden verfluessigten gasen
DE3642199 1986-12-10

Publications (3)

Publication Number Publication Date
EP0271031A2 true EP0271031A2 (fr) 1988-06-15
EP0271031A3 EP0271031A3 (en) 1989-05-31
EP0271031B1 EP0271031B1 (fr) 1991-09-18

Family

ID=6315898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117999A Expired - Lifetime EP0271031B1 (fr) 1986-12-10 1987-12-05 Dispositif pour doser des gaz liquéfiés à bas point d'ébullition

Country Status (6)

Country Link
US (1) US4796434A (fr)
EP (1) EP0271031B1 (fr)
AT (1) ATE67573T1 (fr)
BR (1) BR8706680A (fr)
DE (2) DE3642199A1 (fr)
ES (1) ES2026513T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5400601A (en) * 1992-09-29 1995-03-28 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and device for the distribution of quantities of liquid, particularly liquefied gas
EP0703147A3 (fr) * 1994-09-21 1996-05-08 Boc Group Plc

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5513961A (en) * 1994-08-09 1996-05-07 Chicago Bridge & Iron Technical Services Company Method and apparatus for improving pump net positive suction head
US5743096A (en) * 1996-04-11 1998-04-28 Vacuum Barrier Corporation Controlled dosing of liquid cryogen
US5868003A (en) * 1997-07-14 1999-02-09 Praxair Technology, Inc. Apparatus for producing fine snow particles from a flow liquid carbon dioxide
US12031680B1 (en) 2024-01-22 2024-07-09 Vacuum Barrier Corporation Controlled dosing of liquid cryogen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB979764A (en) * 1960-06-09 1965-01-06 Garrett Corp Discharging liquid from containers by gaseous pressure
US3206939A (en) * 1962-12-26 1965-09-21 Union Carbide Corp Cryogenic fluid transfer system
JPS58142098A (ja) * 1982-02-17 1983-08-23 Suntory Ltd 液化不活性ガスの流下装置
JPS5934098A (ja) * 1982-08-20 1984-02-24 Toyo Seikan Kaisha Ltd 液化ガス滴下ノズル装置
DE3402292C2 (de) * 1984-01-24 1986-01-23 Messer Griesheim Gmbh, 6000 Frankfurt Verfahren und Vorrichtung zum Dosieren kleiner Mengen eines tiefsiedenden, verflüssigten Gases

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295563A (en) * 1963-12-27 1967-01-03 Gen Dynamics Corp Method and apparatus for handling cryogenic liquids
FR2379018A1 (fr) * 1976-12-23 1978-08-25 Air Liquide Procede et installation cryogeniques de distribution de gaz sous pression
DE2923078C2 (de) * 1979-06-07 1983-12-15 Messer Griesheim Gmbh, 6000 Frankfurt Vorrichtung zum Abtrennen des bei der Förderung tiefsiedender verflüssigter Gase verdampfenden Gases
JPS58184395A (ja) * 1982-04-22 1983-10-27 Teisan Kk 低温液化ガス定量流出装置
US4566283A (en) * 1984-08-30 1986-01-28 Nicolet Instrument Corporation Low temperature device for cooling small samples

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB979764A (en) * 1960-06-09 1965-01-06 Garrett Corp Discharging liquid from containers by gaseous pressure
US3206939A (en) * 1962-12-26 1965-09-21 Union Carbide Corp Cryogenic fluid transfer system
JPS58142098A (ja) * 1982-02-17 1983-08-23 Suntory Ltd 液化不活性ガスの流下装置
JPS5934098A (ja) * 1982-08-20 1984-02-24 Toyo Seikan Kaisha Ltd 液化ガス滴下ノズル装置
DE3402292C2 (de) * 1984-01-24 1986-01-23 Messer Griesheim Gmbh, 6000 Frankfurt Verfahren und Vorrichtung zum Dosieren kleiner Mengen eines tiefsiedenden, verflüssigten Gases

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 261 (M-257)[1406], 19. November 1983; & JP-A-58 142 098 (SUNTORY K.K.) 23-08-1983 *
PATENT ABSTRACTS OF JAPAN, Band 8, Nr. 132 (M-903)[1569], 20. Juni 1984; & JP-A-59 034 098 (TOUYON SEIKAN K.K.) 24-02-1984 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5400601A (en) * 1992-09-29 1995-03-28 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and device for the distribution of quantities of liquid, particularly liquefied gas
EP0703147A3 (fr) * 1994-09-21 1996-05-08 Boc Group Plc
US5680964A (en) * 1994-09-21 1997-10-28 The Boc Group Plc Liquid dispenser flow calming

Also Published As

Publication number Publication date
BR8706680A (pt) 1988-07-19
US4796434A (en) 1989-01-10
EP0271031A3 (en) 1989-05-31
EP0271031B1 (fr) 1991-09-18
ES2026513T3 (es) 1992-05-01
DE3773143D1 (de) 1991-10-24
ATE67573T1 (de) 1991-10-15
DE3642199A1 (de) 1988-06-30

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