EP1022509A2 - Capteur de débit massique pour gaz liquifié - Google Patents

Capteur de débit massique pour gaz liquifié Download PDF

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Publication number
EP1022509A2
EP1022509A2 EP00100708A EP00100708A EP1022509A2 EP 1022509 A2 EP1022509 A2 EP 1022509A2 EP 00100708 A EP00100708 A EP 00100708A EP 00100708 A EP00100708 A EP 00100708A EP 1022509 A2 EP1022509 A2 EP 1022509A2
Authority
EP
European Patent Office
Prior art keywords
filling
container
microcontroller
data
liquid 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.)
Withdrawn
Application number
EP00100708A
Other languages
German (de)
English (en)
Other versions
EP1022509A3 (fr
Inventor
Wolfgang Flohr
Stefan Hausmann
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.)
Messer Griesheim GmbH
Original Assignee
Messer Griesheim GmbH
Air Liquide Deutschland 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 Messer Griesheim GmbH, Air Liquide Deutschland GmbH filed Critical Messer Griesheim GmbH
Publication of EP1022509A2 publication Critical patent/EP1022509A2/fr
Publication of EP1022509A3 publication Critical patent/EP1022509A3/fr
Withdrawn legal-status Critical Current

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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
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • 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
    • 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
    • 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
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0408—Level of content in the vessel
    • 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
    • F17C2250/0443—Flow or movement of content

Definitions

  • the invention relates to a detection system and a method for mass flow detection of kyrogenic media, especially liquid gas such as cryogenic liquefied nitrogen, when filling from a stationary storage container such as a cold gasifier or cold tank, according to the preamble of claim 1 or of claim 10.
  • kyrogenic media especially liquid gas such as cryogenic liquefied nitrogen
  • the known mass flow measurements in kyrogenic media such as with liquefied petroleum gas such as cryogenic liquefied nitrogen, either by means of an expensive turbine (tank truck), an expensive one Balance (carbon dioxide extraction) or a differential pressure or Coriolis mass flow meter when filling with liquid gas from stationary storage containers (Cold tank, cold gasifier).
  • liquefied petroleum gas such as cryogenic liquefied nitrogen
  • stationary storage containers Cold tank, cold gasifier
  • the application of the differential pressure method for mass flow measurement with liquefied petroleum gas is problematic, as a rule 2-phase mixture occurs and also the differential pressure mass flow measurement is inaccurate.
  • the use of Coriolis sensors in liquid gas mass flow measurement is with an additional cost of approx. 10 TDM / measuring unit connected.
  • the object of the invention is therefore to provide a method and a control device Mass flow measurement of kyrogenic media such as cryogenic liquefied Nitrogen when filling from stationary storage containers (cold tank; cold gasifier) to create an inexpensive, accurate and flexible mass flow measurement of the liquid gas filled from the storage container with detection the data of the filling process and including the evaluation of this data Assignment to every user, every cost center and every container with simultaneous Checking the access authorization of each user and the container approval guaranteed.
  • kyrogenic media such as cryogenic liquefied Nitrogen when filling from stationary storage containers (cold tank; cold gasifier)
  • the object is achieved in that the Control unit comprises a data acquisition system in which a user's data and / or a container and recorded together with data about the removed Amount of liquid can be called up and stored.
  • connection of the microcontroller to the solenoid valve of each filling line electronically enables the issuing of control commands to the solenoid valve.
  • microcontroller connected to the solenoid valve of each filling line also with one that is provided for each tap and with a start button (Dead man button), stop button and optical and acoustic indicators provided control panel connected.
  • the one to be filled is started before the liquefied gas filling process begins Container with a - for example according to German patent application 198 50 913.8 trained - Filling head provided with a flexible Hose and a filling line containing the solenoid valve with which Containing liquid gas container to be filled is connected.
  • the liquid gas filling process is carried out by a, via the microcontroller Closing of the signal causing the solenoid valve in the filling line one arranged appropriately on the container to be filled
  • Level measuring device automatically ended, for example by means of a float switch, which, for example, in a according to German patent application 198 50 913.8 trained filling head is arranged appropriately.
  • the maximum level in the container to be filled with liquid gas a corresponding one when it reaches its maximum fill level Fill level measuring device giving signal to the microcontroller Find.
  • the microcontroller is expediently equipped with a for reading in the on / n Check card / s of each user and each container attached sticker barcodes Common barcode reader (scanner) connected.
  • control device essentially consists of a microcontroller connected to a personal computer and having at least one connection option for a tap.
  • the freely programmable microcontroller which consists of known electronic microprocessor technology and generally has up to 4 connection points for each tap, contains the control software and is also found as a buffer for the data from the database with it associated commercial personal computer data use.
  • Each microcontroller is connected via an interface (RS 485) with and to a personal computer via a converter (RS 485 / RS 232).
  • the personal computer connected to the microcontroller in the manner described above contains the software for creating the databases, the evaluation software and is the main memory for the data records of each LPG filling process.
  • the personal computer reads the data records from each microcontroller at specified time intervals and sends the current data of its database to each microcontroller when it is created or changed.
  • microcontrollers can be interconnected in an RS 485 network become.
  • the control is a commercial one Provide power supply (external: 230 VAC; internal: 24 VDC). Every switching relay for every In principle, the solenoid valve is potential-free. The voltages (230 VAC or 24 VDC) can, however, be looped over it to supply voltage to the solenoid valve become.
  • the microcontroller, the barcode scanner and the control unit are for outdoor use educated.
  • the system according to the invention for mass flow detection of liquid gases and gaseous media when filling from a fixed cold gasifier or Cold tank is inexpensive and reliable in use and guaranteed also a complete collection and evaluation of the relevant data every filling process including checking the user authorization and the Container approval.
  • this relates to a method for mass flow detection of kyrogenic media, especially liquid gas such as cryogenic liquefied nitrogen, when filling from a stationary storage container such as a cold gasifier or cold tank according to the features of claim 10.
  • the read data refer to all for the acquisition and evaluation of the Liquid gas filling quantities relevant, stored in the database of the software Data.
  • the access authorization of the user and the legally required Approval of the container to be filled checked.
  • the liquid gas filling process is released from the storage container into the container to be filled, for example by pressing a start button one connected to the microcontroller, a stop button and other optical ones and the control unit having acoustic display elements started manually.
  • the filling process is an adjustable safety surcharge for safety reasons automatically ended.
  • the filling device is calibrated in such a way that with a defined filling volume the maximum (with warm filling line) and the minimum (with cold filling line) filling time is measured.
  • the liquefied gas filling process from the storage container into the container can by pressing the stop button on the control panel or by releasing the as Deadman button trained start button connected to the microcontroller Control panel with signal and stop time delay done manually.
  • the method according to the invention for measuring the mass flow of liquid gases and gaseous media from stationary storage containers is inexpensive, robust and flexible in use, also enables acquisition and evaluation all relevant data of the filling process while checking the User access authorization and the legally prescribed container approval.
  • the single figure contains a schematic representation of the essential components of a filling device for mass flow detection of cryogenic liquefied nitrogen according to the invention, with a stationary storage container 1 containing the cryogenic liquefied nitrogen, which is designed as a cold tank or cold gasifier, and which has a filling line 2 containing a solenoid valve 3 and one , is connected to the filling line 2 and to a filling head 8, not shown, a filling level measuring device, variable-length flexible hose 7 connected to a container 9 to be filled with the liquid gas.
  • the solenoid valve 3 and the fill level measuring device of the filling head 8 are connected to a microcontroller 4 consisting of microprocessor technology, which contains the control software and is used as a buffer for the data records, which in turn has a microcontroller used for the acquisition, storage, evaluation and assignment Interface shown (RS 485) and a converter (not shown) (RS 485 / RS 232) with a personal computer 10 containing the data records and with a barcode reader (scanner) 6 and a start button (dead man button), a stop button and acoustic and Operating element 5 having optical display elements is connected.
  • a microcontroller 4 consisting of microprocessor technology, which contains the control software and is used as a buffer for the data records, which in turn has a microcontroller used for the acquisition, storage, evaluation and assignment Interface shown (RS 485) and a converter (not shown) (RS 485 / RS 232) with a personal computer 10 containing the data records and with a barcode reader (scanner) 6
  • a check card containing a bar code and such a check card for each cost center are created for each user, and bar code stickers are applied to the outer surface of the container 9 to be filled.
  • the barcodes contain all the data required for recording, evaluating and assigning the liquid gas mass to be filled from the storage container 1 into the container 9, such as the name of the user, cost center, container size, safety training for the user and the validity date.
  • the barcodes of the respective user, the respective cost center and the container 9 to be filled are also read into the data acquisition system of the control device of the filling device by means of the barcode reader 6 (scanner) connected to the microcontroller 4. At the same time, the access authorization of the user and the proper approval of the container 9 to be filled are checked.
  • the filling process is started manually by pressing the starter button of the control unit 5 connected to the microcontroller 4.
  • the filling process is ended automatically by a filling signal, for example a float switch, of the filling head 8, which is expediently arranged on the container 9 to be filled and is designed in accordance with German patent application 198 50 913.8, and sends a corresponding signal to the Microcontroller 4 is emitted, which in turn causes the closing of the magnetic valve 3, which is expediently arranged in the filling line 2, via a switching relay (not shown).
  • the liquid gas filling process can also be carried out by actuating the stop button of the operating part 5 or by releasing the start button of the operating part 5 designed as a dead man button with signal and stop time delay done manually.
  • the personal computer 10 connected to the microcontroller 4 assigns the individual liquid gas filling quantities to the individual cost centers of each user. Furthermore, the date, the time, the user, the cost center, the container number and the filling time are stored in the data acquisition system of the personal computer 10 connected to the microcontroller 4 of the control device of the filling system for each liquid gas filling process.
  • each filled quantity of liquid gas or its cost as a percentage of the stored filling time is distributed to the individual cost centers of the user. Data can also be evaluated according to the respective user, the respective cost center and the respective container number.
  • the filling process is carried out by closing the solenoid valve 3 arranged in the filling line 2 automatically ended.
  • the filling device is calibrated in such a way that the filling time (with a warm filling line) and the minimum filling time (with a cold filling line) are measured for a defined filling volume.
  • the gaseous nitrogen removed from the storage container 1 is detected by a gas quantity measurement by means of a conventional gas meter and, during the evaluation after refueling the storage container 1, manually via the personal computer 10 into the data acquisition system of the control device entered into the filling device, then converted into the equivalent quantity of liquefied gas and then incorporated into the distribution calculation as a correction factor.
  • microcontrollers 4 can be connected together in an RS 485 network.
  • the control device of the filling device is connected to a standard power supply (external: 230 VAC; internal: 24 VDC).
  • each switching relay for solenoid valve 3 is potential-free.
  • the voltages (230 VAC or 24 VDC) for the voltage supply of the solenoid valve 3 can be looped over it.
  • the microcontroller 4, the control unit 5 and the barcode scanner 6 are designed for outdoor use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP00100708A 1999-01-23 2000-01-14 Capteur de débit massique pour gaz liquifié Withdrawn EP1022509A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19902677 1999-01-23
DE1999102677 DE19902677A1 (de) 1999-01-23 1999-01-23 Flüssiggas-Massedurchflußerfassung

Publications (2)

Publication Number Publication Date
EP1022509A2 true EP1022509A2 (fr) 2000-07-26
EP1022509A3 EP1022509A3 (fr) 2008-03-05

Family

ID=7895210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00100708A Withdrawn EP1022509A3 (fr) 1999-01-23 2000-01-14 Capteur de débit massique pour gaz liquifié

Country Status (2)

Country Link
EP (1) EP1022509A3 (fr)
DE (1) DE19902677A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1813855A1 (fr) * 2006-01-27 2007-08-01 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Procédé et dispositif de remplissage d'un réservoir sous haute pression avec un gaz liquéfié grâce à la pression hydrostatique
WO2013002426A1 (fr) * 2011-06-29 2013-01-03 Gulf Energy Limited Procédé de recharge partielle de gaz de pétrole liquéfié (gpl)
WO2013002425A1 (fr) * 2011-06-29 2013-01-03 Gulf Energy Limited Machine de remplissage partiel avec du gaz de pétrole liquéfié (gpl)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0568837A2 (fr) * 1992-04-09 1993-11-10 ULTRAKUST electronic GmbH Protection de mélange de fluides
EP0813022A1 (fr) * 1996-06-14 1997-12-17 Provençale d'Automation et de Mécanique Appareil de remplissage de bouteille par du GPL
DE19647446A1 (de) * 1996-11-16 1998-05-20 Messer Griesheim Gmbh Verfahren und Vorrichtung zum Bestimmen der Durchflußmenge von Flüssiggas
EP0860648A2 (fr) * 1997-02-14 1998-08-26 Millipore Corporation Système automatisé pour la poursuite de bouteilles de gaz

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0568837A2 (fr) * 1992-04-09 1993-11-10 ULTRAKUST electronic GmbH Protection de mélange de fluides
EP0813022A1 (fr) * 1996-06-14 1997-12-17 Provençale d'Automation et de Mécanique Appareil de remplissage de bouteille par du GPL
DE19647446A1 (de) * 1996-11-16 1998-05-20 Messer Griesheim Gmbh Verfahren und Vorrichtung zum Bestimmen der Durchflußmenge von Flüssiggas
EP0860648A2 (fr) * 1997-02-14 1998-08-26 Millipore Corporation Système automatisé pour la poursuite de bouteilles de gaz

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1813855A1 (fr) * 2006-01-27 2007-08-01 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Procédé et dispositif de remplissage d'un réservoir sous haute pression avec un gaz liquéfié grâce à la pression hydrostatique
WO2013002426A1 (fr) * 2011-06-29 2013-01-03 Gulf Energy Limited Procédé de recharge partielle de gaz de pétrole liquéfié (gpl)
WO2013002425A1 (fr) * 2011-06-29 2013-01-03 Gulf Energy Limited Machine de remplissage partiel avec du gaz de pétrole liquéfié (gpl)

Also Published As

Publication number Publication date
DE19902677A1 (de) 2000-09-14
EP1022509A3 (fr) 2008-03-05

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