EP3913276A1 - Druckgasbehälter, der mit einer elektronischen vorrichtung mit mitteln zur bestätigung von alarmen ausgestattet ist - Google Patents

Druckgasbehälter, der mit einer elektronischen vorrichtung mit mitteln zur bestätigung von alarmen ausgestattet ist Download PDF

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Publication number
EP3913276A1
EP3913276A1 EP21167999.8A EP21167999A EP3913276A1 EP 3913276 A1 EP3913276 A1 EP 3913276A1 EP 21167999 A EP21167999 A EP 21167999A EP 3913276 A1 EP3913276 A1 EP 3913276A1
Authority
EP
European Patent Office
Prior art keywords
alert
control means
audible
gas
visual
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.)
Pending
Application number
EP21167999.8A
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English (en)
French (fr)
Inventor
Sofia Andre Dias
Federica BELLINGERI
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.)
Air Liquide SA
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
Publication of EP3913276A1 publication Critical patent/EP3913276A1/de
Pending 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/032—Orientation with substantially vertical main axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/058—Size portable (<30 l)
    • 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
    • F17C2203/0639—Steels
    • 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
    • F17C2203/0646—Aluminium
    • 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
    • F17C2203/0648—Alloys or compositions of 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
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • 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
    • F17C2205/0188—Hanging up devices
    • 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
    • F17C2205/0308—Protective caps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0329—Valves manually actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F17C2205/0364—Pipes flexible or articulated, e.g. a hose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/011—Oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/016—Noble gases (Ar, Kr, Xe)
    • F17C2221/017—Helium
    • 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
    • F17C2223/036—Very high pressure (>80 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
    • 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
    • F17C2250/03—Control means
    • F17C2250/036—Control means using alarms
    • 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
    • F17C2250/0443—Flow or movement of content
    • 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
    • F17C2250/0473—Time or time periods
    • 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
    • F17C2270/02—Applications for medical applications
    • F17C2270/025—Breathing

Definitions

  • a pressurized fluid container in particular a pressurized gas cylinder, equipped with a fluid dispensing valve comprising an electronic device with a digital display configured to trigger, if necessary, an audible alert and an alarm.
  • visual alert in the event of detection of an anomaly, such as low autonomy or clamping of the fluid distribution duct, and comprising improved alert acknowledgment means; as well as the use of such a pressurized fluid container for storing or dispensing a gas or gas mixture, in particular medical oxygen.
  • Medical fluids or gases such as oxygen, mixtures of NO / N 2 , N 2 O / O 2 , He / O 2 , medical air or the like, are generally packaged in pressurized gas containers, in particular gas cylinders or canisters. These gas containers are equipped with a distribution valve, with or without an integrated pressure relief system, or RDI for supplying medical gas and a needle or digital manometer for displaying the residual gas pressure.
  • pressurized gas containers in particular gas cylinders or canisters.
  • gas containers are equipped with a distribution valve, with or without an integrated pressure relief system, or RDI for supplying medical gas and a needle or digital manometer for displaying the residual gas pressure.
  • the valve and the pressure gauge are protected by a protective cover, also called a "cap”, serving to protect them against shocks, falls, dirt ...
  • a protective cover also called a "cap”
  • the document EP-A-2918893 offers such a gas cylinder equipped with an RDI and a mechanical needle pressure gauge
  • the document EP-A-2918892 offers a gas cylinder equipped with an RDI and an electronic device with a digital display screen.
  • a flexible pipe such as a flexible plastic pipe
  • the flow outlet connection of the distribution valve through which the fluid is delivered before it is routed through the flexible gas line.
  • the flexible gas pipe is more or less clamped, that is to say crushed, twisted or bent.
  • the clamping is then detected by the electronic device which then triggers a so-called clamping alert in order to alert the user.
  • the container empties gradually, more or less quickly depending on the chosen withdrawal rate.
  • the fluid autonomy is also monitored by the electronic device in order to alert the user when the autonomy becomes low. For example, when the autonomy becomes less than a given time, typically around 30 minutes or less, the electronic device triggers a so-called autonomy alert.
  • the electronic device can also be configured to trigger other alerts if it detects other anomalies or potentially problematic situations, for example an excessively low electric current autonomy or the like.
  • US-A-2033/0189492 offers a system for monitoring the oxygen content in the blood of a patient with triggering of an alarm when the oxygen saturation of the patient falls below a threshold value. It comprises an electronic device which attaches to the dispensing valve of a gas cylinder and serves to determine and display the level of liquid oxygen or the pressure of oxygen in the cylinder.
  • This system is therefore limited to monitoring the patient's blood O 2 content in order to trigger an alarm. In other words, it does not make it possible to detect a clamping of the oxygen supply pipe or an excessively low autonomy without a significant drop in the blood O 2 content, for example at the start of clamping.
  • this system is complex because it requires monitoring the patient's blood O 2 content.
  • the aim of the invention is therefore to improve the management of alerts triggered by an electronic device fitted to a pressurized fluid container, in particular a pressurized gas cylinder, fitted with a fluid distribution valve comprising a device.
  • electronic digital display in order to solve all or part of the aforementioned problems, in particular in order to be able to quickly detect clamping or too low autonomy, without requiring monitoring of the patient's blood O 2 content.
  • Fig. 1 is a block diagram of a pressurized fluid container 1 according to the invention, while the Fig. 3 shows an embodiment of such a fluid container 1, namely here a pressurized gas cylinder of axis AA.
  • the fluid container 1 of the Fig. 1 and Fig. 3 comprises an internal volume 2 for storing pressurized gas, for example of more than 200 bar abs (full pressure), and is equipped with a fluid distribution valve 3, such as an RDI, crossed by an internal passage or circuit fluid in fluid communication with the internal volume 2 of the container 1 so as to convey the fluid, namely gas here, within the body of the gas distribution valve 3 as far as an outlet connection 11 at the flow rate to which comes fluidly connecting a flexible gas line 100, which is liable to be unexpectedly clamped.
  • a fluid distribution valve 3 such as an RDI
  • the AA axis gas cylinder has a cylindrical body and a neck, that is, it is bullet shaped.
  • the cylindrical body defines the internal volume 2 for storing gas under high pressure, typically a maximum pressure of 130 to 300 bar abs, or even beyond 300 bar abs.
  • the neck comprises a fluid inlet / outlet orifice communicating with the internal volume 2 and making it possible to withdraw the gas from the internal volume 2 or, conversely, to fill it when it is empty.
  • the gas distribution valve 3 is mounted, typically screwed, at the level of the orifice of the neck of the gas cylinder.
  • the gas distribution valve 3 which is here an RDI, is aimed at the level of the neck of the gas cylinder. It comprises a gas distribution fitting or nozzle, called a flow outlet fitting 11, to which a flexible gas pipe 100 can be connected, such as a flexible plastic pipe, used to convey the gas to a medical device or device. using the gas supplied by the valve 3, for example a breathing mask delivering gas to a patient at a rate prescribed by a doctor or the like corresponding to a treatment to be followed.
  • the valve body is preferably made of brass or stainless steel.
  • the gas distribution valve 3 comprises a pressure sensor 4 for measuring the pressure of the gas, within the internal gas passage and / or in the internal volume 2 of the container 1, and to provide pressure measurements (ie measurement signals ) to microprocessor control means 5, that is to say a device or a control unit control comprising one or more microprocessors implementing one or more algorithms, for example an electronic card carrying one (or more) microprocessors implementing one or more calculation algorithms or others, preferably a microcontroller.
  • the microprocessor control means 5, configured to process the pressure measurements supplied by the pressure sensor 4. They are preferably arranged in the housing of an electronic device 7, for example a digital manometer, fixed on the distribution valve.
  • a flow rate selection device 12 operable by a user, such as a rotary handwheel, serving to select a desired gas flow rate (Qd) to be delivered by the outlet connection 11 in flow rate, for example to meet a prescription from a doctor or the like.
  • the flow rate selection device 12 may be a rotary handwheel capable of moving in rotation between several angular positions, offset from one another, which each correspond to a given flow rate value, for example selectable gas flow rate values included between 0 L / min and 30 L / min, typically between 0 and 25 L / min.
  • the selectable flow values can be: 0, 0.5, 1, 2, 3, 5, 8, 10, 12, 15, 20, 22 and 25 L / min, or any other value.
  • the desired flow rate value (Qd) selected by the user by actuation of the flow rate selection device 12, ie rotary handwheel appears in a reading window 13 located above the flow rate selection device. 12, for example a cutout made in the protective cowling 14 arranged around the valve 3 and serving to protect it against shocks or other external attacks.
  • the flow rate selection device 12 further cooperates with a flow rate adjustment device arranged in the body of the valve 3 in order to adjust the flow rate to the desired gas flow rate value (Qd), for example the adjustment device flow can be a calibrated orifice disc arranged in the path of the gas in the body of the valve 3.
  • a flow rate adjustment device arranged in the body of the valve 3 in order to adjust the flow rate to the desired gas flow rate value (Qd)
  • the adjustment device flow can be a calibrated orifice disc arranged in the path of the gas in the body of the valve 3.
  • the position of the flow rate selection device 12 for example the angular position of the rotary handwheel, can be determined by means of one or more position sensors. This then allows the control means 5 to then know the value of the desired gas flow rate (Qd) having been selected.
  • Such an arrangement is also known per se.
  • the flow outlet connector 11 is arranged centrally and coaxially with the flow rate selection rotary handwheel 12; however, they could also be separated from each other according to other possible embodiments (not shown).
  • the pressure sensor 4 is configured and arranged to measure the pressure of the gas, for example at several successive instants (t 1 , t 2 ), preferably spaced apart successive instants (t 1 , t 2 ) with a duration of a few seconds to tens of seconds, typically a duration of the order of 10 seconds, and then provide the pressure measurements (p 1 , p 2 ) made which correspond to the pressure of the gas measured at these successive instants (t 1 , t 2 ).
  • the time elapsing between successive instants (t 1 , t 2 ) can be determined by means of a time counter, for example internal to the microprocessor control means 5.
  • the pressure measurements (p 1 , p 2 ) made and transmitted by the sensor 14 are in fact signals which represent either pressure values or other quantities, such as voltage or current values, corresponding to values pressure.
  • the microprocessor control means 5 are configured to process the pressure measurement signals (p 1 , p 2 ) determined at successive instants (t 1 , t 2 ) and supplied by the pressure sensor 4, which measures the pressure gas stored in container 1, and determine measured pressure values from these measurement signals.
  • these pressure measurements are processed by the control means 5 to determine, from the pressure measurements (p 1 , p 2 ) made at successive instants (t 1 , t 2 ), a real gas flow (Qr ) supplied by the outlet connection 11 with flow from the valve 3 to the flexible gas pipe 100, between the successive instants (t 1 , t 2 ). Then, they compare this actual gas flow rate (Qr) with the desired gas flow rate (Qd) having been set by actuation of the flow selection device 12, and trigger a clamping alert when they deduce from this comparison that the flow rate of real gas (Qr) is much lower than the expected gas flow, i.e. the desired gas flow (Qd) or, in other words, when: Qr ⁇ n. Qd with: n ⁇ 0.80 (ie 80% expressed as a percentage), preferably n ⁇ 0.70 (ie 70%), more preferably n ⁇ 0.60 (ie 60%), advantageously n ⁇ 0.50 (ie 50%).
  • n ⁇ 0.80
  • the internal volume of the gas container (in water equivalent) is a known value which can be stored by storage means 9, such as a computer memory of EEPROM type, of the electronic device 7.
  • gas cylinders equipped with this type of electronic device 7 used to deliver medical oxygen typically have volumes between 1 L and 20 L (water equiv.), Typically between 2 L and 15 L, for example, depending on the bottle considered, the volume may be of the order of 2 L, 3.5 L, 4.6 L, 5 L, 7 L, 10 L, 11 L or 15 L.
  • the storage means 9 can also record other data, such as for example the time elapsing between the successive instants (t 1 , t 2 ), the successive pressure measurements (p 1 , p 2 ) ... or d '' other parameters, such as the gas temperature, the ambient temperature, the position of the selector, the configuration of the cylinder, the filling pressure, the presses on the acknowledgment button, the alerts ...
  • the electronic device 7 for example a digital pressure gauge, which comprises the microprocessor control means 5, typically an electronic card, is housed in an opening or housing provided in the body of the protective cover 14 arranged around the valve. distribution of fluid 3 and serving to protect it against impact or other possible damage, for example a rigid cover made of polymer and / or metal, as illustrated in Fig. 2 .
  • the digital display 6 of the electronic device 7 comprises a digital screen, for example a liquid crystal display (LCD) or the like, carried by the rigid case, in particular the front face 18, of the electronic device 7, as illustrated in Fig. 4 .
  • LCD liquid crystal display
  • the digital display 6 is electrically powered by an electrical energy source (not visible) arranged in the cowling 14, for example one or more batteries or cells arranged in a battery compartment arranged in the wall of the cowling body and closed by a removable hatch or the like.
  • an electrical energy source not visible
  • arranged in the cowling 14 for example one or more batteries or cells arranged in a battery compartment arranged in the wall of the cowling body and closed by a removable hatch or the like.
  • the digital display 6 of the electronic device 7 makes it possible to display all the information useful to the user, such as for example pressure values, gas autonomy (in hours and minutes) or other information or data, for example the value of the desired gas flow Qd or real Qr (in L / min or in another unit), or the gas autonomy (in hours and minutes) can also be represented by a bar graph 22.
  • information useful to the user such as for example pressure values, gas autonomy (in hours and minutes) or other information or data, for example the value of the desired gas flow Qd or real Qr (in L / min or in another unit), or the gas autonomy (in hours and minutes) can also be represented by a bar graph 22.
  • the digital display 6 can be arranged in the front panel 18, that is to say the front panel, of the box of the electronic device 7 which is fixed on the fluid dispensing valve 3 and housed in an opening or housing of the body of the protective cover 14 protecting the valve 3, as illustrated in Fig. 3 .
  • the digital display 6 comprises a screen with a height of between approximately 29 and 37 mm and a width for example between approximately 39 and 43 mm.
  • the microprocessor control means 5 are configured to control audible alert means and / or visual alert means 19, preferably both, so as to trigger at least one audible alert and / or visual alert, of preferably both, in the event of detection of a malfunction, in particular clamping, or of a too low quantity of gas or autonomy.
  • the sound alert means comprise a buzzer type device or, as the case may be, a loudspeaker emitting a sound, a melody or any other sound signal, for example a “beep” type signal.
  • the loudspeaker or the buzzer can be arranged on the electronic card carrying the microprocessor and advantageously protected by a waterproofing membrane also making it possible to diffuse the sound it emits.
  • the visual warning means 19 comprise, for example, one or more light diodes of the LED or similar type which can be controlled to light up in the event of an alert being triggered (ie light alert) and / or even the appearance.
  • control means 5 are configured to trigger, in a synchronized manner, a visual alert and an audible alert in order to warn the user of this clamping, that is to say - say a local deformation or crushing of the flexible wall of a gas pipe connected to the RDI causing a restriction of the passage of the fluid causing a drop in flow.
  • Other forms of clamping exist, such as for example a bent pipe, that is to say forming a bend or the like.
  • the visual and audible alerts are materialized by a display on the display screen 6 of a specific alert icon 10, for example here a danger triangle, and / or an alphanumeric indication 20 of clamping, for example here the term "CLAMP” or another equivalent term, such as CLAMPAGE, whether in French or in another language, for example CLAMPING in English, and / or a flashing of the display screen 6 and / or one (or more) light diode 19 present on the box of the electronic device 7.
  • CLAMP or another equivalent term, such as CLAMPAGE
  • the triggering of a visual alert is preferably accompanied by an audible alert, namely the emission of an audible signal.
  • the audible and / or visual signals can be continuous, as shown in diagram Fig. 4 , or discontinuous, as shown schematically in Fig. 5 , and explained below.
  • control means 5 are configured to trigger, synchronized way, a visual alert and an audible alert to warn the user of this low fluid autonomy.
  • the fluid autonomy is calculated for a given fluid flow rate, that is to say from the value of the desired gas flow rate Qd selected by the user, from measured pressure values and from other parameters, such as gas temperature. Calculating an autonomy in fluid is known per se.
  • the electronic device 7 may include alert acknowledgment means, such as an alert acknowledgment button or key, in particular arranged in its front panel 18, serving to acknowledge or stop the alerts after they have been triggered.
  • alert acknowledgment means such as an alert acknowledgment button or key, in particular arranged in its front panel 18, serving to acknowledge or stop the alerts after they have been triggered.
  • the alert acknowledgment means 21 for example an alert acknowledgment button, is actuated by the user when he wishes to acknowledge the alerts, that is to say to stop or stop the transmission of the signals. visual and sound.
  • the management of the alerts is carried out in a particular way, as explained below.
  • audible and visual alerts are repeated cyclically, being spaced apart by periods of “silence”, that is to say of automatic interruption of the alerts, commanded by the piloting means 5.
  • the audible and / or visual alerts include the emission of an audible signal and / or a visual signal which may be continuous or discontinuous, i.e. intermittent.
  • Fig. 4 schematizes a continuous sound (or light) signal
  • Fig. 5 schematically represents a discontinuous sound (or light) signal, that is to say intermittent, formed of several sound pulses, such as a series or sequence of beeps of short duration.
  • the control means 5 trigger an audible alert and interrupt it after an alert duration T1.
  • the audible alert is here an audible signal, ie an audible sound, which is delivered throughout the duration T1.
  • the sound signal is stopped, that is to say that no sound is emitted, for a given T2 alert interruption duration.
  • the control means 5 again trigger the sound alert during, again, the alert period T1, then interrupt it.
  • This alert / alert interrupt cycle is repeated here 3 times but, of course, it could be cyclically repeated more than 3 times.
  • the Fig. 5 is analogous to Fig. 4 , except for the fact that, during each alert duration T1, the audible alert signal, ie the audible sound, is not delivered continuously but in a pulsed manner, that is to say in the form of of a series or sequence successive sound pulses of short duration, typically less than 1 second each, separated by also short pause periods, typically less than 1 second each.
  • the pulse and pause durations are of the order of a few tens to hundreds of milliseconds each.
  • the pulses are stopped during period T2, as before, before resuming cyclically for a new period T1.
  • the alert / interrupt alert cycle can be repeated 3 times, or more.
  • the series or sequences of successive sound pulses of short duration are series of sound "beeps" for example.
  • the durations of the sound pulses may be equal to or different from the durations of the pause.
  • Fig. 4 and Fig. 5 schematize sound signals but identical or similar representations can be made with visual signals, in particular light, which can also be continuous or discontinuous, ie in the form of light pulses or flashing.
  • the alert acknowledgment means 21 when they are actuated by a user, cooperate with the control means 5 to interrupt the audible and visual alerts before the end of the alert period (T1) or else to prevent a cyclic repetition of an audible and visual alarm triggering, and this, for a pre-set acknowledgment period (T3), preferably T3> T2 and T3> to T1.
  • durations T1 and T2 equal to a few seconds, and a duration T3 equal to several minutes, for example in order to allow time for a user to unclamp the gas pipe, when a clamping alert has been triggered. triggered or to change the gas cylinder, in the event of a back-up alert being triggered.
  • the durations T1, T2 and T3 can be stored by the storage means 9, such as a computer memory of EEPROM type, of the electronic device 7. According to another embodiment, they can be parameterized via dedicated software, for example an application. external.
  • the alert duration T1 can be inversely proportional to the fluid autonomy of the bottle, i.e. the shorter the fluid autonomy becomes, the longer the alert duration (T1), that this is the duration of a continuous sound signal as illustrated in Fig. 4 , or that of the sound pulse sequence in the case of a discontinuous audible signal, as shown in Fig. 5 .
  • the alert interruption duration (T2) may for its part be proportional to the fluid autonomy of the bottle, that is to say that the shorter the fluid autonomy becomes, the more the alert interruption duration (T2) is short.
  • the protective cover 14 can be a simple cover, such as a simple shell or rigid protective envelope without other functionality, or be more advanced, that is to say include other functions, such as for example a carrying handle 15 fixed to the body of the cowling 14 by one or more support posts 16, and / or a mobile attachment system 17 (eg pivoting or translating) or fixed allowing to hang, ie to suspend, the container / valve / cover assembly to a support, typically to a bed bar or stretcher, or any other rod or the like.
  • the carrying handle 15 is advantageously sized to be able to be gripped manually by a user in order to allow easy handling and / or transport of the gas container / valve / cowling assembly.
  • All the components requiring electrical energy to operate are supplied electrically by an electrical energy source arranged for example in the cowling 14, for example an electric battery or battery.
  • a fluid container 1, in particular a gas cylinder, equipped with a valve, such as an RDI, protected by a cover according to the invention is suitable for the storage and supply of gas under pressure, in particular a medical gas or gas mixture, such as oxygen, an NO / N 2 , O 2 / N 2 O or He / O 2 mixture, air or the like.
  • a medical gas or gas mixture such as oxygen, an NO / N 2 , O 2 / N 2 O or He / O 2 mixture, air or the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP21167999.8A 2020-05-20 2021-04-13 Druckgasbehälter, der mit einer elektronischen vorrichtung mit mitteln zur bestätigung von alarmen ausgestattet ist Pending EP3913276A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2005141A FR3110666B1 (fr) 2020-05-20 2020-05-20 Récipient de gaz sous pression équipé d’un dispositif électronique avec moyens d’acquittement d’alertes

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EP3913276A1 true EP3913276A1 (de) 2021-11-24

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WO2023148048A1 (fr) * 2022-02-04 2023-08-10 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Vanne pour fluide sous pression, et réservoir ou ensemble de réservoirs de fluide sous pression
WO2023156959A1 (en) * 2022-02-17 2023-08-24 Cavagna Group S.P.A. A method for determining the residual supply time for a gas
WO2023156960A1 (en) * 2022-02-17 2023-08-24 Cavagna Group S.P.A. Method for monitoring the passage of gas through a supply tube and valve configured for implementing it

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US20080150739A1 (en) * 2006-12-26 2008-06-26 Gamard Stephan C F Medical gas cylinder alarm and monitoring system and method
EP2918893A1 (de) 2014-03-12 2015-09-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Schutzhaube mit schwenkbarem Einrastsystem für Gasflasche
EP2918892A1 (de) 2014-03-12 2015-09-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Schutzhaube für Gasflasche mit elektronischem Anzeigebildschirm in oberer Position
EP3002498A1 (de) * 2014-09-22 2016-04-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Gasbehälter mit absperrhahnblock, der mit einem berührungsbildschirm zur datenanzeige ausgestattet ist
US10151405B1 (en) * 2012-11-09 2018-12-11 Praxair Technology, Inc. Valve integrated pressure regulator with shroud and digital display for gas cylinders
FR3070592A1 (fr) * 2017-09-01 2019-03-08 Air Liquide Sante (International) Systeme d'aide a l'administration d'oxygene a un patient traite par oxygenotherapie
US10533709B2 (en) * 2015-04-01 2020-01-14 Linde Aktiengesellschaft Gas cylinder control system and gas cylinder for use therewith system

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Publication number Priority date Publication date Assignee Title
US20030189492A1 (en) 2002-04-04 2003-10-09 Harvie Mark R. Monitoring, alarm and automatic adjustment system for users of oxygen and compressed air
US20080150739A1 (en) * 2006-12-26 2008-06-26 Gamard Stephan C F Medical gas cylinder alarm and monitoring system and method
US10151405B1 (en) * 2012-11-09 2018-12-11 Praxair Technology, Inc. Valve integrated pressure regulator with shroud and digital display for gas cylinders
EP2918893A1 (de) 2014-03-12 2015-09-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Schutzhaube mit schwenkbarem Einrastsystem für Gasflasche
EP2918892A1 (de) 2014-03-12 2015-09-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Schutzhaube für Gasflasche mit elektronischem Anzeigebildschirm in oberer Position
EP3002498A1 (de) * 2014-09-22 2016-04-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Gasbehälter mit absperrhahnblock, der mit einem berührungsbildschirm zur datenanzeige ausgestattet ist
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FR3070592A1 (fr) * 2017-09-01 2019-03-08 Air Liquide Sante (International) Systeme d'aide a l'administration d'oxygene a un patient traite par oxygenotherapie

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023148048A1 (fr) * 2022-02-04 2023-08-10 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Vanne pour fluide sous pression, et réservoir ou ensemble de réservoirs de fluide sous pression
FR3132556A1 (fr) * 2022-02-04 2023-08-11 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Vanne pour fluide sous pression, et réservoir ou ensemble de réservoirs de fluide sous pression
WO2023156959A1 (en) * 2022-02-17 2023-08-24 Cavagna Group S.P.A. A method for determining the residual supply time for a gas
WO2023156960A1 (en) * 2022-02-17 2023-08-24 Cavagna Group S.P.A. Method for monitoring the passage of gas through a supply tube and valve configured for implementing it

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FR3110666A1 (fr) 2021-11-26

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