EP2005057A1 - Procede de remplissage d'au moins un recipient a gaz sous pression par au moins un gaz, piece intermediaire destinee a etre reliee a une ouverture d'un recipient a gaz sous pression et robinet pour bouteille a gaz sous pression - Google Patents

Procede de remplissage d'au moins un recipient a gaz sous pression par au moins un gaz, piece intermediaire destinee a etre reliee a une ouverture d'un recipient a gaz sous pression et robinet pour bouteille a gaz sous pression

Info

Publication number
EP2005057A1
EP2005057A1 EP07723913A EP07723913A EP2005057A1 EP 2005057 A1 EP2005057 A1 EP 2005057A1 EP 07723913 A EP07723913 A EP 07723913A EP 07723913 A EP07723913 A EP 07723913A EP 2005057 A1 EP2005057 A1 EP 2005057A1
Authority
EP
European Patent Office
Prior art keywords
compressed gas
gas container
pressure
sensor
intermediate piece
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
EP07723913A
Other languages
German (de)
English (en)
Other versions
EP2005057B1 (fr
Inventor
Johann Pongraz
Ulrich Klebe
Randolf Kunkel
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Priority to PL07723913T priority Critical patent/PL2005057T3/pl
Publication of EP2005057A1 publication Critical patent/EP2005057A1/fr
Application granted granted Critical
Publication of EP2005057B1 publication Critical patent/EP2005057B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • 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
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature 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
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • 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
    • F17C2221/03—Mixtures
    • 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
    • F17C2223/0107—Single phase
    • F17C2223/0123—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
    • 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
    • F17C2223/035—High pressure (>10 bar)
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/035—High pressure, i.e. between 10 and 80 bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/041—Methods for emptying or filling vessel by 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
    • F17C2250/03—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
    • 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
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0439—Temperature
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/05—Improving chemical properties
    • F17C2260/056—Improving fluid characteristics
    • 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
    • F17C2265/02—Mixing fluids
    • F17C2265/025—Mixing fluids different fluids
    • 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
    • F17C2270/01—Applications for fluid transport or storage

Definitions

  • the present invention is a process for filling at least one compressed gas container with at least one gas, an intermediate piece for connecting to an opening of a compressed gas container and a corresponding compressed gas cylinder fitting. According to the invention, it is in particular possible to produce mixtures of gases whose conditions can be adjusted with high precision.
  • Prior art EP 0 908 665 A2 discloses a method for mixing gases in which a reference gas container is filled in addition to the pressurized gas container to be filled.
  • the reference gas container has one or more additional holes in the shell of the gas cylinder, can be introduced by the probe into the reference pressure gas container. Based on the measured values of these sensors, the filling is controlled accordingly.
  • the compressed gas container to be filled and the reference compressed gas container are in fluid communication and are filled parallel to each other, so that in the reference pressure gas container substantially the same conditions as in the pressurized gas container to be filled.
  • the reference compressed gas tank is a special reference compressed gas tank, which must be prepared by additional holes are introduced into the container and must take place for a safety review. This test must be carried out in particular for each individual reference compressed gas container. Under certain circumstances, such special reference compressed gas containers can not be pretreated together with the containers to be filled. Proceeding from this, the object of the present invention is to provide a corresponding filling method in which a conventional compressed gas container can be used as the reference compressed gas container. Furthermore, a corresponding intermediate piece should be specified, which makes this possible.
  • the inventive method for filling at least one compressed gas container with at least one gas wherein a reference pressure gas container is formed, in which a measurement of at least one relevant for the state in the reference pressure gas container measured variable can be carried out, said compressed gas container and reference pressure gas container are at least partially in fluid communication, said Each compressed gas container and the reference compressed gas container each have an opening, through which a gas can be filled and removed, wherein in a filling at least one gas is filled through the opening in the at least one compressed gas container and at least temporarily in the reference pressure gas container, characterized by in that a measuring sensor is introduced through the opening into the reference compressed gas container and at least one measured variable is measured with this measuring sensor at least during a part of the filling process.
  • the reference compressed gas container is characterized by the fact that it can use a conventional compressed gas container without additional holes as a reference pressure gas container and in particular exactly as the compressed gas container to be filled only has an opening through which gas is usually filled and removed.
  • the reference compressed gas container and the pressurized gas containers to be filled are pressurized gas bottles. see, depending on the execution of pressing z. B. up to 200 bar or even 300 bar or more and how they are commercially available in different volumes. If there are two elements in a fluidic connection, this means that a gas can flow from one element to the other without being hindered by, for example, walls or the like.
  • a sensor is an active or passive sensor.
  • the active sensor has to be actively operated, for example supplied with power, or comprises electronic devices for evaluating the measurements, while the passive sensor merely provides a size which allows conclusions to be drawn about the measured variable to be measured.
  • a passive sensor is for example a thermoresistor or a photoresistor.
  • An active sensor is for example a so-called "lab on a chip", in which a complete analytical equipment is designed in miniature scale and on which the measurement results are removable.
  • the measuring sensor is a high-precision measuring sensor, in particular a high-precision pressure sensor.
  • a pressure sensor with an accuracy of ⁇ 0.5 to 0.1% is present here, in particular a low-pressure sensor with measuring ranges of 0 to 10 bar absolute, preferably 0 to 5 bar absolute, in particular 0 to 2 bar absolute. This can be used particularly advantageously for a high-precision metered addition of gas, in particular in the context of the creation of a gas mixture.
  • the last component, preferably the gas component with the largest proportion of the total mixture, is preferably mixed gravimetrically, that is via a control of the filled-in weight. This can be done at pressures up to 100 bar, preferably up to 200 bar, particularly preferably up to 300 bar.
  • High-precision gas mixtures can be produced with an accuracy of 1 to 2% up to four times faster than with conventional gravimetric filling processes.
  • the method according to the invention is particularly suitable for infilling a plurality of compressed gas containers, for example from two to twelve or even more compressed gas containers.
  • a single gas can be filled into the pressurized gas container, but also two or more gases or gas mixtures in succession.
  • high-precision mixtures of several gases can be produced.
  • the process according to the invention is suitable for producing mixtures of two or more gases in which one or more gases have only a very low partial pressure in the final mixture.
  • one component may have a partial pressure of only a few millibar, while the other component may have a pressure of 100 bar or more.
  • reference pressure vessels and pressurized gas containers to be filled have the same fluidic conductance values. This is the case, in particular, when the valve cross sections, including the tube cross sections of the supply lines, do not differ or only insignificantly differ from one another.
  • At least one measured variable is measured with the measuring probe at least during a part of the filling process.
  • the pressure in the compressed gas container (s) to be filled is also known.
  • high-precision pressure measuring sensors in particular capacitive pressure sensors, which can therefore be precisely determined, in particular for pressures of less than one bar, preferably less than half a bar or even 250 millibars or less, what pressures are present in the compressed gas containers to be filled. Due to the known pressures in the compressed gas tanks but also the amount of gas in these containers is known.
  • the measured variable comprises at least one of the following variables: i) a pressure in the reference compressed gas container; ii) a temperature in the reference compressed gas container; iii) a chemical composition of a gas in the reference compressed gas container; and iv) a moisture content in the reference compressed gas container.
  • the measurement of the temperature in the reference pressure gas container allows even more accurate determinations of the amount of gas, in particular in conjunction with a pressure measurement, since due to the temperature, the corresponding gas state equations can be evaluated even more accurately.
  • the measurement of the chemical composition of a gas in the reference pressure gas container can continue to be used for checking the gas mixture to be adjusted and on the other hand also serve to determine impurities in the compressed gas tank and / or in the incoming gas.
  • the analysis of the chemical composition can be carried out by appropriate analytical sensors, for example, by so-called "lab on a chip" -Vo ⁇ ichtitch.
  • the moisture content in the reference compressed gas container may be relevant, for example, when gases or gas mixtures are reacted which react with water.
  • the moisture content is relevant and critical when a gas comprising nitrogen monoxide is introduced into the compressed gas container (s).
  • a gas comprising nitrogen monoxide is introduced into the compressed gas container (s).
  • the measuring sensor is a capacitive pressure sensor.
  • capacitive pressure sensors measure the locally applied pressure by measuring the electrical capacitance of a capacitor.
  • These sensors which are sold for example by the companies Pfeiffer or Alcatel under the name Compact Capacitance Diaphragm Gauge, by the company Leybold under the name Capacitron and by the company BOC Edwards under the name Barocel 600-659, permit a high-precision measurement of the Pressure just at low pressures.
  • a small pressure is understood to mean, in particular, a pressure below atmospheric pressure or in the vicinity of the atmospheric pressure, for example in the range from 10 -3 mbar up to 10 bar
  • Capacitive pressure sensors also have the particular advantage that they allow the pressure of a wide variety of gas types The measured value of such a capacitive pressure sensor is thus independent of the gas type, so that in particular without further corrections the measured values of the same pressure sensor can be used for filling with different gas types.
  • the filling process is carried out in multiple stages.
  • a filling is understood in which at least one printing plateau is present.
  • a pressure plateau is understood here to be a situation in which the pressure is kept essentially constant for a certain period of time during the filling process.
  • Another example of a multi-stage filling process is a filling process in which first a certain partial pressure of a first gas component, for example nitrogen monoxide, and subsequently a partial pressure of a second gas component, for example nitrogen, in the compressed gas container is achieved.
  • a first gas component for example nitrogen monoxide
  • a partial pressure of a second gas component for example nitrogen
  • the filling process is performed at least temporarily as a function of the measured variable. Ie. that in a particularly advantageous manner the measured variable is used to control or regulate the filling process.
  • This may mean, for example, that a gas valve, which establishes a connection to a gas reservoir or closes it, is opened until a pressure sensor indicates a corresponding pressure and after reaching this pressure the valve is closed.
  • a predefinable value ie that a corresponding inlet valve is closed when it reaches this temperature and only then the valve is opened again when another pressure to be specified is undershot.
  • the corresponding measured quantities can also be used to trigger warning functions. For example, if a moisture content above a threshold value is detected and a gas is filled, which reacts with water, a corresponding warning message is issued, for. B. be issued a warning signal.
  • an intermediate piece which serves for connection to an opening of a compressed gas container.
  • the intermediate piece according to the invention comprises a first connection for connecting the intermediate piece to a compressed gas container, a second connection for connecting the intermediate piece to a valve head and is characterized by the fact that at least one measuring sensor is formed, which can be brought into fluid communication with the first connection at least.
  • a connection is here understood to mean a mechanical connection with which the intermediate piece can be connected to the respective element.
  • This may be, for example, a thread which can be connected to a component with, in particular, a pin or cone having a corresponding thread, or else to a compressed gas container having a corresponding thread, as is customary in compressed gas cylinders.
  • a valve head is understood here to mean a unit which is usually used on compressed gas cylinders. This is a valve wheel by means of which a corresponding valve body can be opened and closed and a pressure measuring unit, which indicates the pressure in the gas bottle.
  • the valve head may further comprise a pressure reducer, by means of which the possibly quite high pressure present in the pressurized gas container is reduced to lower pressures, for example in the range of one or a few bars.
  • the valve head comprises a connection for a gas line, by means of which gas can be removed from the compressed gas container.
  • a valve head may be a compressed gas container valve.
  • At least one measuring sensor is designed such that it passes through the first connection.
  • the probe protrudes when connecting the intermediate piece with the compressed gas container in this and thus measures the measured variable in the interior of the compressed gas container.
  • a corresponding temperature measuring head for example in the form of a thermoresistor or a thermocouple, passes through the first connection and thus the temperature in the interior of the compressed gas container can be determined when mounting the intermediate piece on a compressed gas container.
  • the intermediate piece according to the invention makes it possible, in a particularly advantageous manner, for the conventional valve heads to be used for connecting to or removing gas from the pressurized gas container are known, can continue to be used.
  • the intermediate piece according to the invention furthermore has the advantage that it is no longer necessary to form a reference compressed gas container which differs from conventional compressed gas containers but that a conventional compressed gas container, for example a compressed gas cylinder, can be used as a reference compressed gas container with the intermediate piece according to the invention.
  • a conventional compressed gas container for example a compressed gas cylinder
  • no additional safety-related acceptance of the reference compressed gas tank must take place. Rather, the safety-related acceptance of the normal compressed gas container is sufficient anyway.
  • measurements at high pressures inside the reference gas container can be carried out in an advantageous manner.
  • a lance is formed which extends through the first connection.
  • a lance is understood here to mean an elongate, preferably metallic component. In the assembled state, the lance protrudes at least partially into the compressed gas container.
  • At least one of the measuring sensors is arranged on the lance, in particular in the region of the lance end.
  • a temperature-measuring sensor may be arranged on the lance.
  • at least one of the following measuring sensors is formed: i) a measuring sensor for determining the pressure in the reference compressed gas container; ii) a sensor for determining the temperature in the reference compressed gas container; iii) a sensor for determining a chemical composition of a gas in the reference compressed gas container; and iv) a sensor for determining a moisture content in the reference compressed gas container.
  • a sensor for determining the temperature comprises, in particular, a thermocouple or a thermal resistor.
  • a thermocouple In the case of a thermal resistor, only the ohmic resistance of the thermo resistor is measured, which changes as a function of the temperature applied to the thermoresistor.
  • a thermocouple for example, a voltage is applied to a thermoresistor and a flowing current is measured, and from this the current resistance is determined. From this can then close on the temperature.
  • a sensor for determining a chemical composition may comprise, for example, a sensor for measuring the proportion of a specific component gas. This may be, for example, a Nernst probe whose one electrode lies on a corresponding reference. Thus, the moisture content in the reference pressure gas container can be determined.
  • a transmission means is understood as a means by which data can be transmitted to a corresponding receiver.
  • the transmission can be done both wired and wireless.
  • the transmission means may be formed as a plug or coupling, to which a wire can be connected, via which the corresponding measured variable or signals generated by the sensor are transmitted to a corresponding evaluation unit such as a measuring device or a control unit.
  • a single measuring device can be used for monitoring a plurality of measuring sensors in different intermediate pieces, in which a central measuring device interacts with a multiplicity of measuring sensors.
  • a thermocouple or a thermoresistor for measuring the temperature via a corresponding cable with a corresponding ohmmeter, voltmeter or a corresponding evaluation element can be connected.
  • a compressed gas cylinder fitting which comprises an intermediate piece according to the invention and further comprises a valve head in conventional design.
  • the details and advantages disclosed in the context of this invention for the method according to the invention can be transferred and applied to the intermediate piece according to the invention.
  • the intermediate piece according to the invention can be used advantageously in the context of the method according to the invention, in which the reference pressure gas container has an intermediate piece according to the invention.
  • Fig. 1 shows schematically an embodiment of an intermediate piece according to the invention
  • FIG. 2 shows a compressed gas container equipped with an intermediate piece according to the invention in a schematic form when used in the method according to the invention
  • FIG. 3 shows schematically another exemplary embodiment of equipped with erfmdungsge- moderate spacers gas cylinders.
  • FIG. 1 shows an exemplary embodiment of an intermediate piece 1 according to the invention for connecting to an opening of a compressed gas container
  • a first connection 2 for connecting the intermediate piece to a compressed gas container
  • a second connection 3 for connecting the intermediate piece to a valve head (not shown)
  • Measuring sensor 4 are designed for determining the temperature and a sensor 5 for determining the pressure.
  • the first connection 2 comprises, in particular, a pin provided with an external thread, the thread of which communicates with the internal thread of a corresponding compressed gas cylinder.
  • the second connection 3 has in particular an internal thread which corresponds essentially to the internal thread of a compressed gas cylinder, so that a conventional valve head can be connected to the second connection 3.
  • the first connection 2 can be connected to a conventional compressed gas cylinder such that the first connection 2 is screwed onto the corresponding internal thread, so that the measuring sensor 4 for determining the temperature which extends through the first connection 2 projects into the interior of the compressed gas container.
  • Other embodiments of the terminals 2, 3 are possible and according to the invention.
  • the intermediate piece 1 on a transmission means 6.
  • the transmission means 6 is a plug by means of which the measuring sensor 4 for measuring the temperature and / or the measuring sensor 5 for determining the pressure can be connected to a corresponding measuring device (not shown).
  • the intermediate piece 1 can be inserted into any compressed gas cylinder which can be used as a reference compressed gas container in the method according to the invention.
  • the intermediate piece 1 and in particular its lines 7 are formed so that they have the smallest possible volume. This can ensure that the volume of the relevant reference compressed gas tank changes only slightly, so that at most such measurement errors occur that are negligible in magnitude.
  • FIG. 2 shows a compressed gas container 8, which is filled according to the inventive method.
  • a reference pressure gas container 9 is formed.
  • Compressed gas container 8 and reference compressed gas container 9 are connected in parallel with a filling supply line 10.
  • the reference compressed gas container 9 is basically identical to the compressed gas container 8 is formed.
  • the compressed gas container 8 is provided with a conventional valve head 11.
  • the valve head 11 has two connections 12, by means of which the valve head 11 is connected to the compressed gas container 8 on the one hand and the filling line 10 on the other.
  • valve head 11 comprises a Ven- til 13, by means of which the compressed gas container 8 can be brought into fluidic connection to the filling line 10 or a sampling line, not shown here.
  • the reference compressed gas container 9 has an inventive intermediate piece 1, which is shown in detail in Fig. 1 and described above.
  • the second port 3 of the intermediate piece 1 is connected to a corresponding valve head 11.
  • the measuring sensor 4 for determining the temperature is here attached to a lance 17 extending into the reference compressed gas container 9.
  • the measuring sensors 4, 5 it is possible to determine measured variables such as the temperature and the pressure present in the reference compressed gas container 9.
  • the inventive method is not limited to the mixture of two-component gas mixtures.
  • mixtures of any desired number of gas components can thus be produced.
  • the compressed gas container 8 and the reference compressed gas container 9 are evacuated via the filling line 10 until a predefinable maximum pressure or minimum pressure is reached.
  • the first gas component is added. This is preferably the gas component whose proportion in the finished mixture is lower, ie whose partial pressure in the finished mixture is lower than that of the other component.
  • the filling takes place with the valves 13 open, so that the gas component can flow through the filling line 10 both into the compressed gas container 8 and into the reference compressed gas container 9.
  • the filling line 10 is closed when the pressure to be reached is displayed by means of the measuring sensor 5 for determining the pressure. Thereafter, the filling line 10 is connected to the other gas component or with a reservoir containing them.
  • the Referenzdruckgasbereheatl- ter 9 is connected to the Be SheUungstechnisch 10 during the entire filling process.
  • the compressed gas containers of the compressed gas container 8 and of the reference compressed gas container 9 are identical.
  • any compressed gas container can be used as a reference pressure gas container.
  • an embodiment of the intermediate piece 1 according to the invention is possible, which fits on a plurality of compressed gas containers 9. This is due to the fact that there are a large number of different compressed gas containers 8 of different volumes, but all of which have an identical thread for connection to a corresponding valve head 11.
  • the first port 2 communicates with such an internal thread, it is thus possible to use a single intermediate piece for a plurality of different compressed gas containers in order to use these as a reference compressed gas container 9. It is particularly advantageous that sensor 4, 5 or the lance 17, which extend through the first port 2 into the interior of the reference pressure gas container 9, perform as short as possible lead, since then a use in small gas cylinders 8 is possible. This is not disadvantageous in particular if a pressure measurement is carried out in the low pressure range, since in the low pressure range most of the gases behave like ideal gases and no stratification effects or the like are to be expected.
  • the lance 17 may be formed in particular as a riser.
  • the measuring sensors 5 it is advantageous for the measuring sensors 5 to be connected to the interior of the reference compressed gas container 9 via this lance 17, while an evacuation of the reference compressed gas container 9 does not take place via the lance 17, but next to the lance 17. This accelerates the evacuation operation of the reference compressed gas tank 9.
  • Fig. 3 shows schematically a filling level, which shows two reference compressed gas containers 9 of different sizes.
  • the filling device also has a connection 14 for connecting a conventional compressed gas cylinder for filling.
  • valves 15 are formed, by means of which each individual reference compressed gas container 9 can be separated from the filling line 10 or can be fluidically connected to it. Furthermore, an inlet valve 16 is formed, with which the filling line 10 can be connected to a corresponding gas reservoir and / or a corresponding Evakuierü.
  • This embodiment has the particular advantage that can be filled without one of the reference gas pressure tank 9 exchange compressed gas tank 8 different sizes.
  • the inventive method advantageously allows the production of high-precision gas mixtures.
  • the intermediate piece 1 according to the invention can be used in a particularly advantageous manner to form a reference compressed gas container 9 from a conventional compressed gas container 8 such as a compressed gas cylinder.
  • measuring sensors 4 for determining the temperature and measuring sensors 5 for determining the pressure and, in particular, capacitive pressure sensors have proved to be advantageous as measuring sensors.

Abstract

La présente invention concerne un procédé de remplissage d'au moins un récipient (8) à gaz sous pression par au moins un gaz, selon lequel on forme un récipient (9) à gaz sous pression de référence dans lequel on peut réaliser la mesure d'au moins une grandeur de mesure qui concerne l'état dans le récipient (9) à gaz sous pression de référence. Le récipient (8) à gaz sous pression et le récipient (9) à gaz sous pression de référence sont en communication fluide au moins une partie du temps et chaque récipient (8) à gaz sous pression et le récipient (9) à gaz sous pression de référence présentent tous une ouverture par laquelle un gaz peut être introduit ou prélevé. Lors d'une opération de remplissage, au moins un gaz remplit ledit ou lesdits récipients (8) à gaz sous pression et au moins une partie du temps le récipient (9) à gaz sous pression de référence par l'ouverture. Le procédé est caractérisé en ce qu'une sonde de mesure (4, 5) est insérée par l'ouverture dans le récipient à gaz sous pression de référence et en ce que cette sonde de mesure mesure au moins une grandeur de mesure au moins pendant une partie de l'opération de remplissage. Le procédé selon l'invention permet de manière avantageuse de préparer des mélanges de gaz très précis. La pièce intermédiaire (1) selon l'invention peut être utilisée de manière particulièrement avantageuse pour former un récipient (9) à gaz sous pression de référence à partir d'un récipient (8) habituel à gaz sous pression, par exemple une bouteille à gaz sous pression. Comme sonde de mesure, des sondes de mesure (4) qui déterminent la température et des sondes de mesure (5) qui déterminent la pression et en particulier des enregistreurs capacitifs de pression se sont avérées particulièrement avantageuses.
EP07723913.5A 2006-04-07 2007-04-03 Procede de remplissage d'au moins un recipient a gaz sous pression par au moins un gaz Active EP2005057B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07723913T PL2005057T3 (pl) 2006-04-07 2007-04-03 Sposób napełniania co najmniej jednego zbiornika na sprężony gaz co najmniej jednym gazem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006016554A DE102006016554A1 (de) 2006-04-07 2006-04-07 Verfahren zum Befüllen mindestens eines Druckgasbehälters mit mindestens einem Gas, Zwischenstück zum Verbinden mit einer Öffnung eines Druckgasbehälters und Druckgasflaschenarmatur
PCT/EP2007/002972 WO2007115734A1 (fr) 2006-04-07 2007-04-03 Procede de remplissage d'au moins un recipient a gaz sous pression par au moins un gaz, piece intermediaire destinee a etre reliee a une ouverture d'un recipient a gaz sous pression et robinet pour bouteille a gaz sous pression

Publications (2)

Publication Number Publication Date
EP2005057A1 true EP2005057A1 (fr) 2008-12-24
EP2005057B1 EP2005057B1 (fr) 2018-10-17

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US (1) US20090277531A1 (fr)
EP (1) EP2005057B1 (fr)
JP (1) JP5237261B2 (fr)
CN (1) CN101454609B (fr)
DE (1) DE102006016554A1 (fr)
PL (1) PL2005057T3 (fr)
TN (1) TNSN08387A1 (fr)
WO (1) WO2007115734A1 (fr)

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Also Published As

Publication number Publication date
PL2005057T3 (pl) 2019-04-30
US20090277531A1 (en) 2009-11-12
JP5237261B2 (ja) 2013-07-17
CN101454609B (zh) 2011-09-14
WO2007115734A1 (fr) 2007-10-18
CN101454609A (zh) 2009-06-10
EP2005057B1 (fr) 2018-10-17
JP2009532641A (ja) 2009-09-10
DE102006016554A1 (de) 2007-10-11
TNSN08387A1 (en) 2010-04-14

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