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EP3882507A1 - Container for pressurised gas provided with an electronic clamping alert device - Google Patents

Container for pressurised gas provided with an electronic clamping alert device Download PDF

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Publication number
EP3882507A1
EP3882507A1 EP21156395.2A EP21156395A EP3882507A1 EP 3882507 A1 EP3882507 A1 EP 3882507A1 EP 21156395 A EP21156395 A EP 21156395A EP 3882507 A1 EP3882507 A1 EP 3882507A1
Authority
EP
European Patent Office
Prior art keywords
gas
pressure
flow rate
clamping
container
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
EP21156395.2A
Other languages
German (de)
French (fr)
Other versions
EP3882507B1 (en
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 EP3882507A1 publication Critical patent/EP3882507A1/en
Application granted granted Critical
Publication of EP3882507B1 publication Critical patent/EP3882507B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F17C13/028—Special adaptations of indicating, measuring, or monitoring equipment having the volume as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/0157—Details of mounting arrangements for transport
    • F17C2205/0165—Details of mounting arrangements for transport with handgrip
    • 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
    • F17C2205/0338—Pressure regulators
    • 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
    • F17C2205/035—Flow reducers
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure 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
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/031—Air
    • 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
    • F17C2250/0486—Indicating or measuring characterised by the location
    • F17C2250/0491—Parameters measured at or inside 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
    • F17C2250/0486—Indicating or measuring characterised by the location
    • F17C2250/0495—Indicating or measuring characterised by the location the indicated parameter is a converted measured 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/02—Improving properties related to fluid or fluid transfer
    • F17C2260/026—Improving properties related to fluid or fluid transfer by calculation
    • 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
    • F17C2265/04—Effects achieved by gas storage or gas handling using an independent energy source, e.g. battery
    • 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 gas container in particular a pressurized gas cylinder, equipped with a fluid dispensing valve comprising a digital display electronic device configured to sense a clamping of the gas distribution conduit and to trigger, if necessary, a clamping alert which in particular is displayed on the digital display, for example a dedicated clamping alert icon.
  • Medical 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 cylinders. or gas cylinders. These gas containers are fitted with a distribution valve, with or without an integrated pressure relief system, for supplying medical gas and a needle or digital manometer for displaying the residual gas pressure.
  • a protective cover also called a "cap" which serves to protect them against shocks, falls, dirt, etc.
  • the document EP-A-2918893 offers such a gas cylinder equipped with an integrated pressure reducing valve or RDI and a mechanical needle pressure gauge
  • the document EP-A-2918892 offers a gas cylinder equipped with an electronic device with a digital display screen.
  • the gas can be medical oxygen which is delivered to the patient via a respiratory interface, for example a mask, nasal cannulas or the like.
  • the flexible gas pipe typically a flexible pipe
  • the flexible gas pipe is more or less clamped, that is to say crushed, twisted or bent, so that the actual gas flow sent to the patient is not not the desired one, in particularly that it is (very) insufficient compared to what is necessary to treat the patient.
  • Such clamping of the flexible gas line, ie flexible pipe, delivering the gas to patients bedridden in mechanical and / or electrical beds, are recurrent and cause a decrease in the flow of gas, generally oxygen, supplied to the patients. , which can cause their desaturation (ie drop in the O 2 content of the blood) and in the worst case, can lead to hypoxemic cardiac arrest and the death of some patients.
  • the clampings generate a problem of treatment safety for the patient because, in the event of significant clamping of the gas line, the patient cannot be treated effectively due to a lack of gas, typically due to a lack of gas. oxygen, therefore desaturate or worse.
  • the problem is therefore to be able to detect automatically and as early as possible any clamping, in particular any significant clamping, of the flexible gas pipe, typically a flexible plastic pipe, connected to the flow outlet connection of a distribution valve. gas equipping a gas container and immediately alert the user in response to such detection of clamping.
  • the Fig. 1 is a block diagram of a pressurized gas container 1 according to the invention, namely here a gas cylinder with axis AA, while the Fig. 2 shows an embodiment of such a gas container 1.
  • the gas container 1 of the Fig. 1 and Fig. 2 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 at least one internal passage gas in fluid communication with the internal volume 2 of the container 1 so as to convey the gas within the body of the gas distribution valve 3 to an outlet connection 11 in flow to which a flexible gas pipe is fluidly connected 100, schematized in Fig. 3 .
  • a fluid distribution valve 3 such as an RDI
  • the fluid container 1 is a gas cylinder of axis AA comprising a cylindrical body defining 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, and a neck comprising an 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 comprises a gas distribution fitting or nozzle, called the flow outlet fitting 11, to which can be connected a flexible gas pipe 100, such as a flexible plastic pipe, serving in conveying 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.
  • a flexible gas pipe 100 such as a flexible plastic pipe
  • 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 comprising one or more microprocessors implementing one or more algorithms, for example an electronic card carrying one (or more) microprocessors setting implementing one or more calculation algorithms or the like, preferably a microcontroller.
  • microprocessor control means 5 that is to say a device or a control unit comprising one or more microprocessors implementing one or more algorithms, for example an electronic card carrying one (or more) microprocessors setting implementing one or more calculation algorithms or the like, 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 casing of an electronic device 7, for example a digital manometer, attached to the fluid dispensing valve 3, which comprises a digital display 6, such as an LCD screen or the like.
  • 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 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. Such an arrangement is known per se.
  • 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 at several successive instants (t 1 , t 2 ), for example spaced apart successive instants (t 1 , t 2 ) lasting a few seconds. to tens of seconds, for example 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 then processed by the control means 5 to determine, from the pressure measurements (p 1 , p 2 ) taken at successive instants (t 1 , t 2 ), a real gas flow ( Qr) supplied by the outlet connection 11 in flow from the valve 3 to the flexible gas pipe 100, between the successive instants (t 1 , t 2 ).
  • the internal volume of the gas container (in water equivalent) is a known value which can be memorized by storage means 9, such as a computer memory of the EEPROM type, of the electronic device 7.
  • storage means 9 such as a computer memory of the EEPROM type, of the electronic device 7.
  • gas cylinders equipped with this type of electronic device 7 used to dispense 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 can 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 liquid crystal (LCD) or the like, carried by the rigid case, in in particular the front face 18, of the electronic device 7, as illustrated in Fig. 4 . It 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 similar.
  • 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 similar.
  • the control means 5 are configured to trigger a visual and / or audible alert in order to warn the user of this clamping.
  • the Fig. 3 illustrates a clamping of a flexible gas line 100 connected to the gas valve of a gas container according to the invention (not shown).
  • the object 102 which comes to press on the flexible gas pipe 100 locally deforms 101 its flexible wall, that is to say crushes it. This then causes clamping, that is to say a restriction of passage 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 triggering of a visual alert can be 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.
  • the triggering of an alert can also be accompanied by the emission of an audible signal and / or a light signal, for example a flashing of the display screen 6 or of one (or more) diodes. warning 19 present on the box of the electronic device 7.
  • the present invention it is possible to prevent an insufficient gas flow from being delivered to a patient, for example a flow not in accordance with a medical prescription, that is to say to immediately detect any clamping of the patient.
  • the flexible gas pipe fluidly connected to the flow outlet connection 11 of the valve 3.
  • the digital display 6 of the electronic device 7 can also display other useful information, for example the value of the desired gas flow rate Qd or actual Qr (in L / min or in another unit), as illustrated. in Fig. 4 , or a gas autonomy (in hours and minutes), for example represented by a bar graph 22.
  • the digital display 6 comprises a screen with a height for example between 29 and 37 cm approximately and a width for example between 39 and 43 cm approximately.
  • the digital display 6 can be arranged in the front panel 18, that is to say the front panel, of the housing of the electronic device 7 which is fixed on the fluid dispensing valve 3 and housed in an opening of the body of the device. protective cover 14 protecting the valve 3.
  • the electronic device 7 may further include an alert acknowledgment button 21, in particular arranged in its front panel 18, serving to acknowledge or stop an alert after it has been triggered.
  • 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 (eg pivoting or translating) or fixed attachment system 17 making it possible to attach, ie to suspend, the container / valve / cowling assembly to a support, typically to a bed or stretcher bar, or any other rod or the like.
  • a carrying handle 15 fixed to the body of the cowling 14 by one or more support posts 16, and / or a mobile (eg pivoting or translating) or fixed attachment system 17 making it possible to attach, ie to suspend, the container / valve / cowling assembly to a support, typically to a bed or stretcher bar, 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 gas or medical gas mixture, such as oxygen, an NO / N 2 , O 2 / N 2 O or He / O 2 mixture, air or the like.
  • a gas or medical 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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Abstract

L'invention concerne un récipient de gaz sous pression (1), en particulier une bouteille de gaz, comprenant un volume interne (2) de stockage de gaz sous pression, un robinet de distribution de fluide (3) comprenant un raccord de sortie (11) en débit auquel est connecté une conduite de gaz flexible (100), un dispositif de sélection de débit (12) permettant de sélectionner un débit de gaz désiré (Qd) à délivrer par le raccord de sortie (11) en débit, un capteur de pression (4) pour mesurer la pression du gaz à plusieurs instants (t1, t2) successifs, et fournir des mesures de pression (p1, p2) correspondant à la pression du gaz mesurée auxdits instants (t1, t2) successifs, et des moyens de pilotage à microprocesseur (5) configurés pour traiter les mesures de pression (p1, p2) fournies par le capteur de pression de manière à détecter tout clampage de la conduite de gaz flexible (100) et alerter en cas de clampage.

Figure imgaf001
The invention relates to a pressurized gas container (1), in particular a gas cylinder, comprising an internal volume (2) for storing pressurized gas, a fluid distribution valve (3) comprising an outlet connection ( 11) in flow rate to which a flexible gas pipe (100) is connected, a flow rate selection device (12) making it possible to select a desired gas flow rate (Qd) to be delivered by the outlet connection (11) in flow rate, a pressure sensor (4) for measuring the gas pressure at several successive instants (t 1 , t 2 ), and providing pressure measurements (p 1 , p 2 ) corresponding to the gas pressure measured at said instants (t 1 , t 2 ) successive, and microprocessor control means (5) configured to process the pressure measurements (p 1 , p 2 ) supplied by the pressure sensor so as to detect any clamping of the flexible gas pipe (100) and alert in case of clamping.
Figure imgaf001

Description

L'invention porte sur un récipient de gaz sous pression, en particulier une bouteille de gaz sous pression, équipé d'un robinet de distribution de fluide comprenant un dispositif électronique à afficheur numérique configuré pour détecter un clampage du conduit de distribution de gaz et pour déclencher, le cas échéant, une alerte de clampage qui notamment s'affiche sur l'afficheur numérique, par exemple une icône d'alerte de clampage dédiée.A pressurized gas container, in particular a pressurized gas cylinder, equipped with a fluid dispensing valve comprising a digital display electronic device configured to sense a clamping of the gas distribution conduit and to trigger, if necessary, a clamping alert which in particular is displayed on the digital display, for example a dedicated clamping alert icon.

Les gaz médicaux, tel l'oxygène, les mélanges NO/N2, N2O/O2, He/O2, l'air médical ou autre, sont généralement conditionnés dans des récipients de gaz sous pression, en particulier des bouteilles ou bonbonnes de gaz. Ces récipients de gaz sont équipés d'un robinet de distribution, avec ou sans système de détente intégré, servant à fournir le gaz médical et d'un manomètre à aiguille ou digital servant à afficher la pression de gaz résiduelle. En général, le robinet et le manomètre sont protégés par un capotage de protection, aussi appelé « chapeau », servant à les prémunir contre les chocs, les chutes, les salissures...Medical 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 cylinders. or gas cylinders. These gas containers are fitted with a distribution valve, with or without an integrated pressure relief system, for supplying medical gas and a needle or digital manometer for displaying the residual gas pressure. In general, the valve and the pressure gauge are protected by a protective cover, also called a "cap", which serves to protect them against shocks, falls, dirt, etc.

Ainsi, le document EP-A-2918893 propose une telle bouteille de gaz équipée d'un robinet à détendeur intégré ou RDI et d'un manomètre mécanique à aiguille, alors que le document EP-A-2918892 propose une bouteille de gaz équipée d'un dispositif électronique à écran d'affichage digital.Thus, the document EP-A-2918893 offers such a gas cylinder equipped with an integrated pressure reducing valve or RDI and a mechanical needle pressure gauge, while the document EP-A-2918892 offers a gas cylinder equipped with an electronic device with a digital display screen.

Pour utiliser le gaz, c'est-à-dire le soutirer du récipient, il est courant de raccorder une conduite de gaz flexible, tel un tuyau flexible en plastique, au raccord de sortie en débit du robinet de distribution par lequel le gaz est délivré. Le gaz peut ensuite être acheminé par la conduite de gaz flexible jusqu'à un patient qui en a besoin dans le cadre d'un traitement par inhalation de gaz. Typiquement, le gaz peut être de l'oxygène médical qui est administré au patient via une interface respiratoire, par exemple un masque, des canules nasales ou autre.To use the gas, i.e. withdraw it from the container, it is common to connect a flexible gas line, such as a flexible plastic pipe, to the flow outlet connection of the distribution valve through which the gas is issued. The gas can then be delivered through the flexible gas line to a patient who needs it for gas inhalation therapy. Typically, the gas can be medical oxygen which is delivered to the patient via a respiratory interface, for example a mask, nasal cannulas or the like.

Or, il arrive assez fréquemment que la conduite de gaz flexible, typiquement un tuyau flexible, soit plus ou moins clampée, c'est-à-dire écrasée, tordue ou pliée, de sorte que le débit de gaz réel envoyé au patient ne soit pas celui souhaité, en particulier qu'il soit (très) insuffisant par rapport à ce qui nécessaire pour traiter le patient.However, it often happens that the flexible gas pipe, typically a flexible pipe, is more or less clamped, that is to say crushed, twisted or bent, so that the actual gas flow sent to the patient is not not the desired one, in particularly that it is (very) insufficient compared to what is necessary to treat the patient.

De tels clampages de la conduite de gaz flexible, i.e. tuyau flexible, délivrant le gaz aux patients alités dans des lits mécaniques et/ou électriques, sont récurrents et provoquent une diminution du débit de gaz, en général de l'oxygène, fourni aux patients, ce qui peut provoquer leur désaturation (i.e. baisse de la teneur en O2 du sang) et dans le pire des cas, peut amener à un arrêt cardiaque hypoxémique et au décès de certains patients.Such clamping of the flexible gas line, ie flexible pipe, delivering the gas to patients bedridden in mechanical and / or electrical beds, are recurrent and cause a decrease in the flow of gas, generally oxygen, supplied to the patients. , which can cause their desaturation (ie drop in the O 2 content of the blood) and in the worst case, can lead to hypoxemic cardiac arrest and the death of some patients.

Or, comme un patient alité n'est souvent pas dans un état d'éveil suffisant pour s'apercevoir d'un changement significatif de débit d'oxygène et que le moniteur de gaz du sang n'alerte que lorsque le patient est déjà désaturé, donc potentiellement en danger, il est préférable de prévenir en amont l'utilisateur que le traitement reçu par le patient est différent du traitement prescrit.However, since a bedridden patient is often not sufficiently awake to notice a significant change in oxygen flow and the blood gas monitor only alerts when the patient is already desaturated , therefore potentially in danger, it is preferable to warn the user upstream that the treatment received by the patient is different from the prescribed treatment.

Autrement dit, on comprend aisément que les clampages engendrent un problème de sécurité de traitement pour le patient car, en cas de clampage important de la conduite de gaz, le patient ne peut être traité efficacement du fait d'un manque de gaz, typiquement d'oxygène, donc désaturer ou pire.In other words, it is easily understood that the clampings generate a problem of treatment safety for the patient because, in the event of significant clamping of the gas line, the patient cannot be treated effectively due to a lack of gas, typically due to a lack of gas. oxygen, therefore desaturate or worse.

Le problème est dès lors de pouvoir détecter automatiquement et le plus tôt possible tout clampage, en particulier tout clampage important, de la conduite de gaz flexible, typiquement un tuyau en plastique flexible, raccordée au raccord de sortie en débit d'un robinet de distribution de gaz équipant un récipient de gaz et d'alerter immédiatement l'utilisateur en réponse à une telle détection de clampage.The problem is therefore to be able to detect automatically and as early as possible any clamping, in particular any significant clamping, of the flexible gas pipe, typically a flexible plastic pipe, connected to the flow outlet connection of a distribution valve. gas equipping a gas container and immediately alert the user in response to such detection of clamping.

La solution de l'invention concerne un récipient de gaz sous pression, en particulier une bouteille de gaz, comprenant un volume interne de stockage de gaz sous pression, et comprenant en outre :

  • un robinet de distribution de fluide comprenant un raccord de sortie en débit auquel est connecté une conduite de gaz flexible,
  • un dispositif de sélection de débit permettant de sélectionner un débit de gaz désiré (Qd) à délivrer par le raccord de sortie en débit,
  • un capteur de pression pour mesurer la pression du gaz à plusieurs instants (t1, t2) successifs, et fournir des mesures de pression (p1, p2) correspondant à la pression du gaz mesurée auxdits instants (t1, t2) successifs, et
  • des moyens de pilotage à microprocesseur configurés pour traiter les mesures de pression (p1, p2) fournies par le capteur de pression,
caractérisé en ce que les moyens de pilotage sont en outre configurés pour :
  • déterminer un débit de gaz réel (Qr) fourni par le raccord de sortie en débit du robinet à la conduite de gaz flexible, entre les instants successifs (t1, t2), à partir des mesures de pression (p1, p2) opérées aux instants successifs (t1, t2),
  • comparer le débit de gaz réel (Qr) au débit de gaz désiré (Qd),
  • déclencher une alerte de clampage lorsque : Qr < n . Qd avec : n ≤ 0,80 (i.e. 80%).
The solution of the invention relates to a pressurized gas container, in particular a gas cylinder, comprising an internal volume for storing pressurized gas, and further comprising:
  • a fluid distribution valve comprising a flow outlet connection to which a flexible gas pipe is connected,
  • a flow rate selection device making it possible to select a desired gas flow rate (Qd) to be delivered by the flow rate outlet connection,
  • a pressure sensor for measuring the pressure of the gas at several successive times (t 1 , t 2 ), and providing pressure measurements (p 1 , p 2 ) corresponding to the pressure of the gas measured at said times (t 1 , t 2 ) successive, and
  • microprocessor control means configured to process the pressure measurements (p 1 , p 2 ) supplied by the pressure sensor,
characterized in that the control means are further configured for:
  • determine a real gas flow rate (Qr) supplied by the flow rate connection from the valve to the flexible gas pipe, between successive instants (t 1 , t 2 ), from the pressure measurements (p 1 , p 2 ) operated at successive instants (t 1 , t 2 ),
  • compare the actual gas flow (Qr) with the desired gas flow (Qd),
  • trigger a clamping alert when: Qr <n. Qd with: n ≤ 0.80 (ie 80%).

Selon le mode de réalisation considéré, le récipient de l'invention peut comprendre l'une ou plusieurs des caractéristiques suivantes :

  • les moyens de pilotage sont ou comprennent un dispositif de pilotage comprenant un ou plusieurs microprocesseurs, telle une carte électronique.
  • les moyens de pilotage sont configurés pour déclencher une alerte de clampage lorsque : Qr < n . Qd avec : n ≤ 0,70 (i.e. 70%), de préférence avec n ≤ 0,60 (i.e. 60%).
  • les moyens de pilotage sont configurés pour déclencher une alerte de clampage lorsque : Qr < n . Qd avec : n ≤ 0,50 (i.e. 50%).
  • les moyens de pilotage à microprocesseur sont configurés pour déterminer le débit de gaz réel (Qr), entre les instants successifs (t1, t2), en opérant le calcul suivant (les valeurs étant exprimées en unités S.I.) : Qr = ΔP . V / Δt
    Figure imgb0001
     où :
    • ▪ ΔP correspond à la variation de pression entre deux mesures de pression successives (p1, p2),
    • ▪ V correspond au volume du récipient de gaz, et
    • ▪ Δt correspond à la variation de temps entre les instants successifs (t1, t2) auxquels ont été opérées les deux mesures de pression successives (p1, p2).
  • les moyens de pilotage sont agencés dans un dispositif électronique à afficheur numérique, de préférence dans le boitier d'un dispositif électronique.
  • le dispositif électronique est un manomètre digital permettant de déterminer une pression de gaz et/ou une autonomie en gaz.
  • le dispositif de sélection de débit comprend un volant rotatif configuré pour se déplacer entre plusieurs positions angulairement décalées les uns des autres, chaque position correspondant à une valeur de débit de gaz désiré (Qd) donnée.
  • le dispositif de sélection de débit permet de sélectionner des débits de gaz désirés (Qd) compris entre 0 et 30 L/min, typiquement entre 0 et 25 L/min.
  • le dispositif de sélection de débit coopère en outre avec un dispositif de réglage de débit agencé dans le corps du robinet afin de régler le débit à la valeur de débit de gaz désiré (Qd).
  • le dispositif de réglage de débit comprend un disque à orifices calibré agencé sur le trajet du gaz dans le corps du robinet.
  • le raccord de sortie de gaz est agencé au centre du volant rotatif, c'est-à-dire qu'ils sont agencés coaxialement l'un à l'autre.
  • il comprend un compteur temporel.
  • le compteur temporel est incorporé aux moyens de pilotage.
  • les moyens de pilotage sont configurés pour enregistrer les instants successifs (t1, t2) auxquels sont opérées les mesures de pression successives (p1, P2).
  • les moyens de pilotage sont configurés pour déterminer la durée (Δt) s'écoulant entre deux instants successifs (t1, t2).
  • préférentiellement, les deux instants successifs (t1, t2) sont séparés d'une durée comprise entre 1 et 60 secondes, ou plus, de préférence moins de 30 secondes, par exemple de l'ordre de 10 secondes.
  • le récipient a un volume interne compris entre 1 et 20 L, typiquement entre 2 et 15 L (équivalent en eau).
  • l'afficheur numérique du dispositif électronique est configuré pour afficher une icône d'alerte de clampage ou une indication alphanumérique de clampage en cas de déclenchement d'une alerte de clampage, par exemple les termes « CLAMP », « CLAMPAGE » ou analogue (en français ou en une autre langue).
  • les moyens de pilotage à microprocesseur comprennent un ou plusieurs microprocesseurs.
  • les moyens de pilotage à microprocesseur sont configurés pour déclencher en outre une alarme sonore en cas de déclenchement d'une alerte de clampage.
  • les moyens de mémorisation de données comprennent une mémoire morte, de préférence une EEPROM ou analogue.
  • le dispositif électronique est fixé au robinet de distribution de gaz.
  • le dispositif électronique comprend le microprocesseur.
  • au moins une source d'énergie électrique alimente électriquement l'afficheur numérique, le (ou les) microprocesseur et/ou le capteur de pression.
  • le capteur de pression est agencé de manière à mesurer la pression du gaz au sein du passage interne de gaz du robinet de distribution de fluide.
  • le robinet de distribution de fluide est protégé par un capotage de protection comprenant un corps de capotage rigide agencé autour dudit robinet de distribution de fluide.
  • le boitier du dispositif électronique comprenant l'afficheur numérique est logé dans une ouverture aménagée dans le corps de capotage.
  • le corps de capotage définit un volume interne dimensionné pour loger le robinet de distribution de gaz.
  • la source d'énergie électrique comprend une ou plusieurs batteries ou piles électriques, rechargeables ou non.
  • le (ou les) microprocesseur met en œuvre un ou plusieurs algorithmes.
  • les moyens de pilotage à microprocesseur comprennent une carte électronique sur laquelle est agencé le (ou les) microprocesseur(s).
  • les moyens de pilotage à microprocesseur comprennent au moins un microcontrôleur. Plus précisément, un (ou plusieurs) microprocesseur peut être intégré au dispositif électronique sous forme d'un microcontrôleur.
  • les moyens de pilotage à microprocesseur, typiquement un microcontrôleur, sont configurés pour enregistrer des données, notamment au sein d'un logiciel ou algorithme.
  • le corps de capotage est en matériau polymère, en métal ou leurs combinaisons.
  • le corps de capotage comprend une (ou plusieurs) poignée de portage, de préférence la poignée de portage est agencée de manière à surmonter le capotage, c'est-à-dire qu'elle est située sensiblement au-dessus du capotage.
  • le robinet de distribution de gaz est un robinet à détendeur intégré ou RDI.
  • le robinet de distribution de fluide est en alliage de cuivre, tel du laiton.
  • le corps de capotage comprend en outre un système d'accrochage conçu pour permettre son accrochage à un support, en particulier à un barreau de lit d'hôpital ou à un brancard de transport de patient ou analogue.
  • le corps de capotage comprend en outre un système d'accrochage mobile, de préférence pivotant.
  • le récipient de fluide est une bouteille de gaz sous pression contenant un gaz sous pression, en particulier un gaz médical, tel l'oxygène.
  • le récipient de fluide contient, lorsqu'il est plein, un gaz à une pression d'au moins 130 à 200 bar abs, voire d'au moins 300 bar abs.
  • le récipient de fluide a une forme générale cylindrique, en particulier d'ogive, en métal ou alliage métallique (e.g. acier, aluminium....) ou en matériau(x) composite(s).
  • le récipient de fluide contient un gaz ou mélange gazeux, tel de l'oxygène, un mélange NO/N2, O2/N2O ou He/O2, de l'air ou autre.
According to the embodiment considered, the container of the invention may comprise one or more of the following characteristics:
  • the control means are or include a control device comprising one or more microprocessors, such as an electronic card.
  • the control means are configured to trigger a clamping alert when: Qr <n. Qd with: n ≤ 0.70 (ie 70%), preferably with n ≤ 0.60 (ie 60%).
  • the control means are configured to trigger a clamping alert when: Qr <n. Qd with: n ≤ 0.50 (ie 50%).
  • the microprocessor control means are configured to determine the actual gas flow (Qr), between successive instants (t 1 , t 2 ), by performing the following calculation (the values being expressed in SI units): Qr = ΔP . V / Δt
    Figure imgb0001
     or :
    • ▪ ΔP corresponds to the pressure variation between two successive pressure measurements (p 1 , p 2 ),
    • ▪ V corresponds to the volume of the gas container, and
    • ▪ Δt corresponds to the variation in time between the successive instants (t 1 , t 2 ) at which the two successive pressure measurements were made (p 1 , p 2 ).
  • the control means are arranged in an electronic device with a digital display, preferably in the casing of an electronic device.
  • the electronic device is a digital manometer making it possible to determine a gas pressure and / or a gas autonomy.
  • the flow rate selection device comprises a rotary handwheel configured to move between several positions angularly offset from each other, each position corresponding to a given desired gas flow rate (Qd).
  • the flow rate selection device makes it possible to select the desired gas flow rates (Qd) between 0 and 30 L / min, typically between 0 and 25 L / min.
  • the flow rate selection device further cooperates with a flow rate adjustment device arranged in the body of the valve in order to adjust the flow rate to the desired gas flow rate value (Qd).
  • the flow rate regulator comprises a disc with calibrated orifices arranged in the path of the gas in the body of the valve.
  • the gas outlet fitting is arranged in the center of the rotary flywheel, i.e. they are arranged coaxially with each other.
  • it includes a time counter.
  • the time counter is incorporated into the control means.
  • the control means are configured to record the successive instants (t 1 , t 2 ) at which the successive pressure measurements (p 1 , P2) are made.
  • the control means are configured to determine the duration (Δt) elapsing between two successive instants (t 1 , t 2 ).
  • preferably, the two successive instants (t 1 , t 2 ) are separated by a duration of between 1 and 60 seconds, or more, preferably less than 30 seconds, for example of the order of 10 seconds.
  • the container has an internal volume of between 1 and 20 L, typically between 2 and 15 L (water equivalent).
  • the digital display of the electronic device is configured to display a clamping alert icon or alphanumeric clamping indication if a clamping alert is triggered, for example the terms "CLAMP", "CLAMPAGE" or the like. French or another language).
  • the microprocessor control means comprise one or more microprocessors.
  • the microprocessor control means are configured to further trigger an audible alarm in the event of triggering of a clamping alert.
  • the data storage means comprise a read only memory, preferably an EEPROM or the like.
  • the electronic device is attached to the gas distribution valve.
  • the electronic device includes the microprocessor.
  • at least one source of electrical energy supplies the digital display, the microprocessor (s) and / or the pressure sensor electrically.
  • the pressure sensor is arranged to measure the pressure of the gas within the internal gas passage of the fluid distribution valve.
  • the fluid distribution valve is protected by a protective cowling comprising a rigid cowling body arranged around said fluid distribution valve.
  • the housing of the electronic device comprising the digital display is housed in an opening made in the cowling body.
  • the cowling body defines an internal volume dimensioned to house the gas distribution valve.
  • the source of electrical energy comprises one or more batteries or electric cells, rechargeable or not.
  • the microprocessor (s) implements one or more algorithms.
  • the microprocessor control means comprise an electronic card on which the microprocessor (s) is arranged.
  • the microprocessor control means comprise at least one microcontroller. More precisely, one (or more) microprocessor can be integrated into the electronic device in the form of a microcontroller.
  • the microprocessor control means, typically a microcontroller, are configured to record data, in particular within a software or algorithm.
  • the cowling body is made of polymer material, metal or their combinations.
  • the cowling body comprises one (or more) carrying handle, preferably the carrying handle is arranged so as to overcome the cowling, that is to say it is located substantially above the cowling.
  • the gas distribution valve is a built-in pressure regulator or RDI valve.
  • the fluid dispensing valve is made of a copper alloy, such as brass.
  • the cowling body further comprises a hooking system designed to allow its hooking to a support, in particular to a hospital bed bar or to a patient transport stretcher or the like.
  • the cowling body further comprises a mobile hooking system, preferably pivoting.
  • the fluid container is a pressurized gas cylinder containing a pressurized gas, in particular a medical gas, such as oxygen.
  • the fluid container contains, when it is full, a gas at a pressure of at least 130 to 200 bar abs, or even at least 300 bar abs.
  • the fluid container has a generally cylindrical shape, in particular an ogive, made of metal or metal alloy (eg steel, aluminum, etc.) or of composite material (s).
  • the fluid container contains a 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.

L'invention va maintenant être mieux comprise grâce à la description détaillée suivante, faite à titre illustratif mais non limitatif, en référence à la figure annexée, à savoir :

  • Fig. 1 est un schéma de principe d'un récipient de gaz à afficheur numérique selon l'invention,
  • Fig. 2 représente un mode de réalisation d'un récipient de gaz muni d'un dispositif électronique à afficheur numérique selon l'invention,
  • Fig. 3 illustre un clampage d'une conduite de gaz flexible raccordée au robinet de gaz d'un récipient de gaz selon l'invention, et
  • Fig. 4 représente un mode de réalisation d'un dispositif électronique à afficheur numérique d'un récipient de gaz selon l'invention.
The invention will now be better understood thanks to the following detailed description, given by way of illustration but not limitation, with reference to the appended figure, namely:
  • Fig. 1 is a block diagram of a gas container with a digital display according to the invention,
  • Fig. 2 shows an embodiment of a gas container fitted with an electronic device with a digital display according to the invention,
  • Fig. 3 illustrates a clamping of a flexible gas pipe connected to the gas valve of a gas container according to the invention, and
  • Fig. 4 shows an embodiment of an electronic device with a digital display of a gas container according to the invention.

La Fig. 1 est un schéma de principe d'un récipient de gaz 1 sous pression selon l'invention, à savoir ici une bouteille de gaz d'axe AA, alors que la Fig. 2 représente un mode de réalisation d'un tel récipient de gaz 1.The Fig. 1 is a block diagram of a pressurized gas container 1 according to the invention, namely here a gas cylinder with axis AA, while the Fig. 2 shows an embodiment of such a gas container 1.

Le récipient de gaz 1 des Fig. 1 et Fig. 2 comprend un volume interne 2 de stockage de gaz sous pression, par exemple de plus de 200 bar abs (pression à plein), et est équipé d'un robinet de distribution de fluide 3, tel un RDI, traversé par au moins un passage interne de gaz en communication fluidique avec le volume interne 2 du récipient 1 de manière à convoyer le gaz au sein du corps du robinet de distribution de gaz 3 jusqu'à un raccord de sortie 11 en débit auquel vient se raccorder fluidiquement une conduite de gaz flexible 100, schématisé en Fig. 3.The gas container 1 of the Fig. 1 and Fig. 2 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 at least one internal passage gas in fluid communication with the internal volume 2 of the container 1 so as to convey the gas within the body of the gas distribution valve 3 to an outlet connection 11 in flow to which a flexible gas pipe is fluidly connected 100, schematized in Fig. 3 .

De préférence, le récipient de fluide 1 est une bouteille de gaz d'axe AA comprenant un corps cylindrique définissant le volume interne 2 de stockage de gaz sous haute pression, typiquement une pression maximale de 130 à 300 bar abs, voire au-delà de 300 bar abs, et un col comprenant un orifice communicant avec le volume interne 2 et permettant de soutirer le gaz du volume interne 2 ou, à l'inverse, de le remplir lorsqu'il est vide. Le robinet de distribution de gaz 3 est monté, typiquement vissé, au niveau de l'orifice du col de la bouteille de gaz.Preferably, the fluid container 1 is a gas cylinder of axis AA comprising a cylindrical body defining 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, and a neck comprising an 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.

Comme expliqué ci-après, le robinet de distribution de gaz 3 comprend un raccord ou embout de distribution de gaz, appelé raccord de sortie en débit 11, auquel peut être raccordé une conduite de gaz flexible 100, tel un tuyau en plastique flexible, servant à convoyer le gaz jusqu'à un appareil ou dispositif médical utilisant le gaz fourni par le robinet 3, par exemple un masque respiratoire distribuant du gaz à un patient à un débit prescrit par un médecin ou analogue correspondant un traitement à suivre.As explained below, the gas distribution valve 3 comprises a gas distribution fitting or nozzle, called the flow outlet fitting 11, to which can be connected a flexible gas pipe 100, such as a flexible plastic pipe, serving in conveying 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.

Le robinet de distribution de gaz 3 comprend un capteur de pression 4 pour mesurer la pression du gaz, au sein du passage interne de gaz et/ou dans le volume interne 2 du récipient 1, et fournir des mesures de pression (i.e. signaux de mesure) à des moyens de pilotage à microprocesseur 5, c'est-à-dire un dispositif ou une unité de pilotage comprenant un ou plusieurs microprocesseurs mettant en œuvre un ou plusieurs algorithmes, par exemple une carte électronique portant un (ou des) microprocesseur mettant en œuvre un ou des algorithmes de calcul ou autres, de préférence un microcontrôleur.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 comprising one or more microprocessors implementing one or more algorithms, for example an electronic card carrying one (or more) microprocessors setting implementing one or more calculation algorithms or the like, preferably a microcontroller.

Les moyens de pilotage à microprocesseur 5, configurés pour traiter les mesures de pression fournies par le capteur de pression 4. Ils sont préférentiellement agencés dans le boitier d'un dispositif électronique 7, par exemple un manomètre numérique, fixé sur le robinet de distribution de fluide 3, lequel comprend un afficheur numérique 6, tel un écran LCD ou analogue.The microprocessor control means 5, configured to process the pressure measurements supplied by the pressure sensor 4. They are preferably arranged in the casing of an electronic device 7, for example a digital manometer, attached to the fluid dispensing valve 3, which comprises a digital display 6, such as an LCD screen or the like.

Il est en outre prévu un dispositif de sélection de débit 12 actionnable par un utilisateur, tel un volant rotatif, servant à sélectionner un débit de gaz désiré (Qd) devant être délivré par le raccord de sortie 11 en débit, par exemple pour répondre à une prescription d'un médecin ou analogue.There is further provided 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.

Comme illustré en Fig. 2, le dispositif de sélection de débit 12 peut être un volant rotatif apte à se déplacer en rotation entre plusieurs positions angulaires, décalées les uns des autres, qui correspondent chacune à une valeur de débit donnée, par exemple des valeurs de débit de gaz sélectionnables comprises entre 0 L/min et 30 L/min, typiquement entre 0 et 25 L/min. Par exemple, les valeurs de débit sélectionnables peuvent être les suivantes : 0, 0.5, 1, 2, 3, 5, 8, 10, 12, 15, 20, 22 et 25 L/min, ou toute autre valeur.As shown in Fig. 2 , 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. For example, 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.

Comme on peut le voir, la valeur de débit désiré (Qd) sélectionnée par l'utilisateur par actionnement du dispositif de sélection de débit 12, i.e. volant rotatif, apparaît dans une fenêtre de lecture 13 située au-dessus du dispositif de sélection de débit 12, typiquement une fenêtre de lecture 13 ou découpe aménagée dans le capotage de protection 14 agencé autour du robinet 3 et servant à le protéger contre les chocs ou autres agressions extérieures.As can be seen, 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, typically a reading window 13 or cutout made in the protective cowling 14 arranged around the valve 3 and serving to protect it against shocks or other external attacks.

En fait, le dispositif de sélection de débit 12 coopère en outre avec un dispositif de réglage de débit agencé dans le corps du robinet 3 afin de régler le débit à la valeur de débit de gaz désiré (Qd), par exemple le dispositif de réglage de débit peut un disque à orifices calibré agencé sur le trajet du gaz dans le corps du robinet 3. Un tel agencement est connu en soi.In fact, 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. Such an arrangement is known per se.

Une fois le débit de gaz désiré (Qd) sélectionné, la position du dispositif de sélection de débit 12, par exemple la position angulaire du volant rotatif, peut être déterminée grâce à un ou plusieurs capteurs de position. Ceci permet alors aux moyens de pilotage 5 de connaître alors la valeur du débit de gaz désiré (Qd) ayant été sélectionnée. Un tel agencement est aussi connu en soi.Once the desired gas flow rate (Qd) has been selected, 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.

Dans le mode de réalisation de la Fig. 2, le raccord de sortie en débit 11 est agencé au centre et coaxialement au volant rotatif de sélection de débit 12 ; toutefois, ils pourraient aussi être séparés l'un de l'autre selon d'autres modes de réalisation possibles (non montrés).In the embodiment of the Fig. 2 , 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).

Par ailleurs, le capteur de pression 4 est configuré et agencé pour mesurer la pression du gaz à plusieurs instants successifs (t1, t2), par exemple des espacés instants successifs (t1, t2) d'une durée de quelques secondes à dizaines de secondes, par exemple une durée de l'ordre de 10 secondes, et fournir ensuite les mesures de pression (p1, p2) opérées qui correspondent à la pression du gaz mesurée à ces instants successifs (t1, t2).Furthermore, the pressure sensor 4 is configured and arranged to measure the pressure of the gas at several successive instants (t 1 , t 2 ), for example spaced apart successive instants (t 1 , t 2 ) lasting a few seconds. to tens of seconds, for example 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 ).

La détermination de la durée s'écoulant entre les instants successifs (t1, t2) peut se faire au moyen d'un compteur temporel, par exemple interne aux moyens de pilotage à microprocesseur 5.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.

Les mesures de pression (p1, p2) opérées et transmises par le capteur 14 sont en fait des signaux qui représentent soit des valeurs de pression, soit d'autres grandeurs, comme des valeurs de tension ou de courant, correspondant à des valeurs de pression.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.

Autrement, les moyens de pilotage à microprocesseur 5 sont configurés pour traiter les signaux de mesure de pression (p1, p2) déterminés aux instants successifs (t1, t2) et fournis par le capteur de pression 4, lequel mesure la pression du gaz stocké dans le récipient 1, et déterminer des valeurs de pression mesurées à partir de ces signaux de mesure.Otherwise, 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.

Plus précisément, ces mesures de pression sont ensuite traitées par les moyens de pilotage 5 pour déterminer, à partir des mesures de pression (p1, p2) opérées aux instants successifs (t1, t2), un débit de gaz réel (Qr) fourni par le raccord de sortie 11 en débit du robinet 3 à la conduite de gaz flexible 100, entre les instants successifs (t1, t2).More precisely, these pressure measurements are then processed by the control means 5 to determine, from the pressure measurements (p 1 , p 2 ) taken at successive instants (t 1 , t 2 ), a real gas flow ( Qr) supplied by the outlet connection 11 in flow from the valve 3 to the flexible gas pipe 100, between the successive instants (t 1 , t 2 ).

Ensuite, ils comparent ce débit de gaz réel (Qr) au débit de gaz désiré (Qd) ayant été fixé par actionnement du dispositif de sélection de débit 12, et déclenchent une alerte de clampage lorsqu'ils déduisent de cette comparaison que le débit de gaz réel (Qr) est très inférieur au débit de gaz attendu, c'est-à-dire au débit de gaz désiré (Qd) ou, autrement dit, lorsque : Qr < n . Qd avec : n ≤ 0,80 (i.e. 80% exprimé en pourcentage), de préférence n ≤ 0,70 (i.e. 70%), de préférence encore n ≤ 0,60 (i.e. 60%), avantageusement n ≤ 0,50 (i.e. 50%).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 in percentage), preferably n ≤ 0.70 (ie 70%), more preferably n ≤ 0.60 (ie 60%), advantageously n ≤ 0.50 (ie 50%).

Pour déterminer le débit de gaz réel (Qr), entre les instants successifs (t1, t2), à partir de mesures de pression successives (p1, p2), les moyens de pilotage 5 opèrent le calcul suivant : Qr = (ΔP . V) / Δt où :

  • ΔP correspond à la variation de pression entre deux mesures de pression successives (p1, p2),
  • V correspond au volume du récipient de gaz, et
  • Δt correspond à la variation de temps entre les instants successifs (t1, t2) auxquels ont été opérées les deux mesures de pression successives (p1, p2).
To determine the actual gas flow (Qr), between successive instants (t 1 , t 2 ), from successive pressure measurements (p 1 , p 2 ), the control means 5 perform the following calculation: Qr = (ΔP. V) / Δt where:
  • ΔP corresponds to the pressure variation between two successive pressure measurements (p 1 , p 2 ),
  • V is the volume of the gas container, and
  • Δt corresponds to the variation in time between the successive instants (t 1 , t 2 ) at which the two successive pressure measurements (p 1 , p 2 ) were made.

Le volume interne du récipient de gaz (en équivalent eau) est une valeur connue qui peut être mémorisée par des moyens de mémorisation 9, telle une mémoire informatique de type EEPROM, du dispositif électronique 7. Par exemple, les bouteilles de gaz équipées de ce type de dispositif électronique 7 utilisées pour distribuer de l'oxygène médical (i.e. de qualité médicale) ont typiquement des volumes entre 1 L et 20 L (équiv. en eau), typiquement entre 2 L et 15 L, par exemple, selon la bouteille considérée, le volume peut être de l'ordre de 2 L, 3.5 L, 4.6 L, 5 L, 7 L, 10 L, 11 L ou 15 L.The internal volume of the gas container (in water equivalent) is a known value which can be memorized by storage means 9, such as a computer memory of the EEPROM type, of the electronic device 7. For example, gas cylinders equipped with this type of electronic device 7 used to dispense medical oxygen (ie medical grade) 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 can be of the order of 2 L, 3.5 L, 4.6 L, 5 L, 7 L, 10 L, 11 L or 15 L.

Les moyens de mémorisation 9 peuvent aussi enregistrer d'autres données, comme par exemple la durée s'écoulant entre les instants successifs (t1, t2), les mesures de pression successives (p1, p2)... ou d'autres paramètres, comme la températures du gaz, la température ambiante, la position du sélecteur, la configuration de la bouteille, la pression de remplissage, les appuis sur le bouton d'acquittement, les alertes...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 ...

Plus généralement, le dispositif électronique 7, par exemple un manomètre numérique, qui comprend les moyens de pilotage à microprocesseur 5, typiquement une carte électronique, est logé dans une ouverture ou logement prévu dans le corps du capotage de protection 14 agencé autour du robinet de distribution de fluide 3 et servant à le protéger contre les chocs ou autres détériorations possibles, par exemple un capotage rigide en polymère et/ou en métal, comme illustré en Fig. 2.More generally, 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 .

L'afficheur numérique 6 du dispositif électronique 7 comprend un écran numérique, par exemple à cristaux liquides (LCD) ou autre, porté par le boitier rigide, en particulier la face avant 18, du dispositif électronique 7, comme illustré en Fig. 4. Il est alimenté électriquement par une source d'énergie électrique (non visible) agencée dans le capotage 14, par exemple une ou des batteries ou piles disposées dans un logement à piles aménagé dans la paroi du corps de capotage et fermé par une trappe amovible ou analogue.The digital display 6 of the electronic device 7 comprises a digital screen, for example liquid crystal (LCD) or the like, carried by the rigid case, in in particular the front face 18, of the electronic device 7, as illustrated in Fig. 4 . It 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 similar.

En cas de détection d'un clampage de conduit 100, les moyens de pilotage 5 sont configurés pour déclencher une alerte visuelle et/ou sonore afin d'avertir l'utilisateur de ce clampage. La Fig. 3 illustre un clampage d'une conduite de gaz 100 flexible raccordée au robinet de gaz d'un récipient de gaz selon l'invention (non montré). Comme on le voit, l'objet 102 qui vient appuyer sur la conduite de gaz 100 flexible déforme localement 101 sa paroi flexible, c'est-à-dire l'écrase. Ceci provoque alors un clampage, c'est-à-dire une restriction de passage engendrant une chute de débit. D'autres formes de clampage existent, comme par exemple un tuyau plié, c'est-à-dire formant un coude ou analogue.In case of detection of a clamping of conduit 100, the control means 5 are configured to trigger a visual and / or audible alert in order to warn the user of this clamping. The Fig. 3 illustrates a clamping of a flexible gas line 100 connected to the gas valve of a gas container according to the invention (not shown). As can be seen, the object 102 which comes to press on the flexible gas pipe 100 locally deforms 101 its flexible wall, that is to say crushes it. This then causes clamping, that is to say a restriction of passage 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.

En cas de détection de clampage, comme illustré en Fig. 4, le déclenchement d'une alerte visuelle peut se matérialiser par un affichage sur l'écran d'affichage 6 d'une icône d'alerte 10 spécifique, par exemple ici un triangle de danger, et/ou d'une indication alphanumérique 20 de clampage, par exemple ici le terme « CLAMP » ou un autre terme équivalent, comme CLAMPAGE, que ce soit en français ou en une autre langue, par exemple CLAMPING en anglais.If clamping is detected, as shown in Fig. 4 , the triggering of a visual alert can be 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.

Le déclenchement d'une alerte peut aussi s'accompagner de l'émission d'un signal sonore et/ou d'un signal lumineux, par exemple un clignotement de l'écran d'affichage 6 ou d'une (ou des) diode d'alerte 19 présente sur le boitier du dispositif électronique 7.The triggering of an alert can also be accompanied by the emission of an audible signal and / or a light signal, for example a flashing of the display screen 6 or of one (or more) diodes. warning 19 present on the box of the electronic device 7.

Grâce à la présente invention, il est possible d'éviter qu'un débit de gaz insuffisant ne soit distribué à un patient, par exemple un débit non conforme à une prescription médicale, c'est-à-dire de détecter immédiatement tout clampage de la conduite de gaz flexible reliée fluidiquement au raccord de sortie en débit 11 du robinet 3.Thanks to the present invention, it is possible to prevent an insufficient gas flow from being delivered to a patient, for example a flow not in accordance with a medical prescription, that is to say to immediately detect any clamping of the patient. the flexible gas pipe fluidly connected to the flow outlet connection 11 of the valve 3.

Il est à noter que l'afficheur numérique 6 du dispositif électronique 7 peut aussi afficher d'autres informations utiles, par exemple la valeur du débit de gaz désiré Qd ou réel Qr (en L/min ou en une autre unité), comme illustré en Fig. 4, ou encore une autonomie en gaz (en heures et minutes), par exemple représentée par un barre-graphe 22.It should be noted that the digital display 6 of the electronic device 7 can also display other useful information, for example the value of the desired gas flow rate Qd or actual Qr (in L / min or in another unit), as illustrated. in Fig. 4 , or a gas autonomy (in hours and minutes), for example represented by a bar graph 22.

Plus généralement, l'afficheur numérique 6 comprend un écran de hauteur par exemple comprise entre 29 et 37 cm environ et de largeur par exemple comprise entre 39 et 43 cm environ.More generally, the digital display 6 comprises a screen with a height for example between 29 and 37 cm approximately and a width for example between 39 and 43 cm approximately.

L'afficheur numérique 6 peut être agencé dans le panneau frontal 18, c'est-à-dire la façade avant, du boitier du dispositif électronique 7 qui est fixé sur le robinet de distribution de fluide 3 et logé dans une ouverture du corps du capotage de protection 14 protégeant le robinet 3.The digital display 6 can be arranged in the front panel 18, that is to say the front panel, of the housing of the electronic device 7 which is fixed on the fluid dispensing valve 3 and housed in an opening of the body of the device. protective cover 14 protecting the valve 3.

Le dispositif électronique 7 peut comprendre en outre un bouton d'acquittement d'alerte 21, notamment agencé dans son panneau frontal 18, servant à acquitter ou arrêter une alerte après son déclenchement.The electronic device 7 may further include an alert acknowledgment button 21, in particular arranged in its front panel 18, serving to acknowledge or stop an alert after it has been triggered.

En outre, comme illustré en Fig. 2, le capotage de protection 14 peut être un capotage simple, telle une simple coque ou enveloppe protectrice rigide sans autre fonctionnalité, ou être plus évolué, c'est-à-dire comprendre d'autres fonctionnalités, comme par exemple une poignée de portage 15 fixé au corps du capotage 14 par un ou des montants-supports 16, et/ou un système d'accrochage 17 mobile (e.g. pivotant ou translatif) ou fixe permettant d'accrocher, i.e. de suspendre, l'ensemble récipient/robinet/capotage à un support, typiquement à un barreau de lit ou de brancard, ou toute autre tringle ou analogue.Further, as shown in Fig. 2 , 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 (eg pivoting or translating) or fixed attachment system 17 making it possible to attach, ie to suspend, the container / valve / cowling assembly to a support, typically to a bed or stretcher bar, or any other rod or the like.

La poignée de portage 15 est avantageusement dimensionnée pour pouvoir être saisie manuellement par un utilisateur afin de permettre une manipulation et/ou un transport aisé de l'ensemble récipient de gaz/robinet/capotage.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.

Tous les composants nécessitant de l'énergie électrique pour fonctionner (i.e. microprocesseur, capteur, afficheur etc... ) sont alimentés électriquement par une source d'énergie électrique agencée par exemple dans le capotage 14, par exemple une pile ou batterie électrique.All the components requiring electrical energy to operate (i.e. microprocessor, sensor, display, etc.) are supplied electrically by an electrical energy source arranged for example in the cowling 14, for example an electric battery or battery.

D'une manière générale, un récipient de fluide 1, en particulier une bouteille de gaz, équipée d'un robinet, tel un RDI, protégé par un capotage selon l'invention est adaptée au stockage et à la fourniture de gaz sous pression, en particulier un gaz ou mélange gazeux médical, tel de l'oxygène, un mélange NO/N2, O2/N2O ou He/O2, de l'air ou autre.In general, 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 gas or medical gas mixture, such as oxygen, an NO / N 2 , O 2 / N 2 O or He / O 2 mixture, air or the like.

Claims (10)

Récipient de gaz sous pression (1), en particulier une bouteille de gaz, comprenant un volume interne (2) de stockage de gaz sous pression, et comprenant en outre : - un robinet de distribution de fluide (3) comprenant un raccord de sortie (11) en débit auquel est connecté une conduite de gaz flexible (100), - un dispositif de sélection de débit (12) permettant de sélectionner un débit de gaz désiré (Qd) à délivrer par le raccord de sortie (11) en débit, - un capteur de pression (4) pour mesurer la pression du gaz à plusieurs instants (t1, t2) successifs, et fournir des mesures de pression (p1, p2) correspondant à la pression du gaz mesurée auxdits instants (t1, t2) successifs, et - des moyens de pilotage à microprocesseur (5) configurés pour traiter les mesures de pression (p1, p2) fournies par le capteur de pression (4), caractérisé en ce que les moyens de pilotage (5) sont en outre configurés pour : a) déterminer un débit de gaz réel (Qr) fourni par le raccord de sortie (11) en débit du robinet à la conduite de gaz flexible (100), entre les instants successifs (t1, t2), à partir des mesures de pression (p1, p2) opérées aux instants successifs (t1, t2), b) comparer le débit de gaz réel (Qr) au débit de gaz désiré (Qd), c) déclencher une alerte de clampage lorsque : Qr < n . Qd avec : n ≤ 0,80.Pressurized gas container (1), in particular a gas cylinder, comprising an internal volume (2) for storing pressurized gas, and further comprising: - a fluid distribution valve (3) comprising a flow outlet connection (11) to which a flexible gas pipe (100) is connected, - a flow rate selection device (12) making it possible to select a desired gas flow rate (Qd) to be delivered by the outlet connection (11) in flow rate, - a pressure sensor (4) for measuring the pressure of the gas at several successive instants (t 1 , t 2 ), and providing pressure measurements (p 1 , p 2 ) corresponding to the pressure of the gas measured at said instants (t 1 , t 2 ) successive, and - microprocessor control means (5) configured to process the pressure measurements (p 1 , p 2 ) supplied by the pressure sensor (4), characterized in that the control means (5) are further configured for: a) determine a real gas flow rate (Qr) supplied by the outlet connection (11) as a flow rate from the valve to the flexible gas pipe (100), between the successive instants (t 1 , t 2 ), from the measurements of pressure (p 1 , p 2 ) operated at successive instants (t 1 , t 2 ), b) compare the actual gas flow (Qr) with the desired gas flow (Qd), c) trigger a clamping alert when: Qr <n. Qd with: n ≤ 0.80. Récipient selon la revendication 1, caractérisé en ce que les moyens de pilotage (5) sont configurés pour déclencher une alerte de clampage lorsque : Qr < n . Qd avec : n ≤ 0,70, de préférence avec n ≤ 0,60.Container according to Claim 1, characterized in that the control means (5) are configured to trigger a clamping alert when: Qr <n. Qd with: n ≤ 0.70, preferably with n ≤ 0.60. Récipient selon l'une des revendications précédentes, caractérisé en ce que les moyens de pilotage (5) sont configurés pour déclencher une alerte de clampage lorsque : Qr < n . Qd avec : n ≤ 0,50.Container according to one of the preceding claims, characterized in that the control means (5) are configured to trigger a clamping alert when: Qr <n. Qd with: n ≤ 0.50. Récipient selon l'une des revendications précédentes, caractérisé en ce que les moyens de pilotage (5) sont configurés pour déterminer le débit de gaz réel (Qr), entre les instants successifs (t1, t2), en opérant le calcul suivant : Qr = (ΔP . V) / Δt
où : - ΔP correspond à la variation de pression entre deux mesures de pression successives (p1, p2), - V correspond au volume du récipient de gaz, et - Δt correspond à la variation de temps entre les instants successifs (t1, t2) auxquels ont été opérées les deux mesures de pression successives (p1, p2). Container according to one of the preceding claims, characterized in that the control means (5) are configured to determine the actual gas flow (Qr), between the successive instants (t 1 , t 2 ), by performing the following calculation : Qr = (ΔP. V) / Δt
or : - ΔP corresponds to the pressure variation between two successive pressure measurements (p 1 , p 2 ), - V corresponds to the volume of the gas container, and - Δt corresponds to the variation in time between the successive instants (t 1 , t 2 ) at which the two successive pressure measurements (p 1 , p 2 ) were made. Récipient selon l'une des revendications précédentes, caractérisé en ce que les moyens de pilotage à microprocesseur (5) sont agencés dans un dispositif électronique (7) à afficheur numérique (6).Container according to one of the preceding claims, characterized in that the microprocessor control means (5) are arranged in an electronic device (7) with digital display (6). Récipient selon l'une des revendications précédentes, caractérisé en ce que le dispositif de sélection de débit (12) comprend un volant rotatif configuré pour se déplacer entre plusieurs positions angulairement décalées les uns des autres, chaque position correspondant à une valeur de débit de gaz désiré (Qd) donnée comprise entre 0 et 30 L/min.Container according to one of the preceding claims, characterized in that the flow rate selection device (12) comprises a rotary handwheel configured to move between several positions angularly offset from each other, each position corresponding to a gas flow value. desired (Qd) given between 0 and 30 L / min. Récipient selon la revendication 1, caractérisé en ce que l'afficheur numérique (6) du dispositif électronique (7) est configuré pour afficher une icône d'alerte de clampage (10) et/ou une indication alphanumérique de clampage (20) en cas de déclenchement d'une alerte de clampage.A container according to claim 1, characterized in that the digital display (6) of the electronic device (7) is configured to display a clamping alert icon (10) and / or an alphanumeric clamping indication (20) in the event triggering of a clamping alert. Récipient selon la revendication 1, caractérisé en ce que le capteur de pression (4) est agencé de manière à mesurer la pression du gaz au sein d'un passage interne de gaz du robinet de distribution de gaz (3) en communication fluidique avec le volume interne (2) du récipient de gaz (1).A container according to claim 1, characterized in that the pressure sensor (4) is arranged so as to measure the pressure of the gas within an internal gas passage of the gas distribution valve (3) in fluid communication with the internal volume (2) of the gas container (1). Récipient selon la revendication 1, caractérisé en ce que le dispositif électronique (7) est fixé au robinet de distribution de gaz (3) et est alimenté électriquement par une source d'énergie électrique, de préférence une ou des batteries ou piles.Container according to Claim 1, characterized in that the electronic device (7) is fixed to the gas distribution valve (3) and is electrically supplied by a source of electrical energy, preferably one or more batteries or cells. Utilisation d'un récipient de gaz (1), en particulier une bouteille de gaz, selon l'une des revendications précédentes, pour stocker ou pour fournir un gaz sous pression, en particulier un gaz médical choisi parmi l'oxygène ou un mélange gazeux N2O/O2, NO/N2, He/O2, de l'air médical.Use of a gas container (1), in particular a gas cylinder, according to one of the preceding claims, for storing or for supplying a pressurized gas, in particular a medical gas selected from oxygen or a gas mixture N 2 O / O 2 , NO / N 2 , He / O 2 , medical air.
EP21156395.2A 2020-03-18 2021-02-10 Container for pressurised gas provided with an electronic clamping alert device Active EP3882507B1 (en)

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FR2002674A FR3108382B1 (en) 2020-03-18 2020-03-18 Pressurized gas container equipped with an electronic device with clamping alert

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EP3882507B1 EP3882507B1 (en) 2024-12-04

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FR3132556B1 (en) * 2022-02-04 2024-01-19 Air Liquide Valve for pressurized fluid, and reservoir or assembly of reservoirs for pressurized fluid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2918892A1 (en) 2014-03-12 2015-09-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Protective hood for a gas cylinder with electronic display screen in raised position
EP2918893A1 (en) 2014-03-12 2015-09-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Protective hood with pivoting attachment system for a gas cylinder
FR3018579A1 (en) * 2014-03-12 2015-09-18 Air Liquide GAS DISTRIBUTION ASSEMBLY WITH ROTARY CONTROL MEMBER PROTECTED BY A PROJECTED REBORD BEARING A READING WINDOW
EP3382259A1 (en) * 2017-03-31 2018-10-03 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Gas delivery device with improved coupling system of the operating member
FR3070592A1 (en) * 2017-09-01 2019-03-08 Air Liquide Sante (International) SYSTEM FOR AIDING THE DELIVERY OF OXYGEN TO A PATIENT TREATED BY OXYGEN THERAPY

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Publication number Priority date Publication date Assignee Title
FR2929142A1 (en) * 2008-03-28 2009-10-02 H M Sarl Lamination fabricating machine for rotor of e.g. electric motor, in automobile industry, has support for unwinding strip through zone in which plates are realized one by one, where zone has ejecting station ejecting complete lamination

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2918892A1 (en) 2014-03-12 2015-09-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Protective hood for a gas cylinder with electronic display screen in raised position
EP2918893A1 (en) 2014-03-12 2015-09-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Protective hood with pivoting attachment system for a gas cylinder
FR3018579A1 (en) * 2014-03-12 2015-09-18 Air Liquide GAS DISTRIBUTION ASSEMBLY WITH ROTARY CONTROL MEMBER PROTECTED BY A PROJECTED REBORD BEARING A READING WINDOW
EP3382259A1 (en) * 2017-03-31 2018-10-03 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Gas delivery device with improved coupling system of the operating member
FR3070592A1 (en) * 2017-09-01 2019-03-08 Air Liquide Sante (International) SYSTEM FOR AIDING THE DELIVERY OF OXYGEN TO A PATIENT TREATED BY OXYGEN THERAPY

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EP3882507B1 (en) 2024-12-04
FR3108382B1 (en) 2022-08-19
PT3882507T (en) 2025-01-23
FR3108382A1 (en) 2021-09-24

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