• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Pressurized fluid bottle tap a data storage and data acquisition member (7) and at least one data display (8), the tap (1) comprising a sensor (9) for the position of a fluid means (5) for manually controlling a regulating member (4) and a pressure sensor (10) for measuring the pressure within the storage volume of a fluid bottle (2), a data storage and processing acquisition member (7) being configured to: - calculate a value of actual and / or withdrawn actual fluid quantity based on the pressure sensor (10) pressure measurement, - calculate a value of quantity of fluid remaining and / or withdrawn theoretical on the basis of the regulation imposed by the regulating member (4) and measured by the position of the control member (5), - comparing said actual value based on measuring the pressure sensor (10) with the theoretical value imposed by the regulating member (4) n and, generating an alert signal in the event of a discrepancy between these real and theoretical values greater than a determined safety threshold.
    公开号:FR3016679A1
    申请号:FR1450526
    申请日:2014-01-22
    公开日:2015-07-24
    发明作者:Christophe Roland Rezel；Amelie Carron；Philippe Rudnianyn；Catherine Vivier；Beatriz Lopez
    申请人:Air Liquide SA；LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a valve for a bottle of fluid under pressure and a corresponding bottle. The invention relates more particularly to a valve for a bottle of pressurized fluid comprising a body provided with an end intended to be mounted in the orifice of a bottle of pressurized fluid, the valve body housing a first withdrawal circuit comprising an upstream first end for communicating the storage volume of a pressurized fluid bottle and a second downstream end intended to be connected to a user body of the withdrawn gas, the first withdrawal circuit comprising a flow control member and or the pressure of the fluid drawn between the upstream and downstream ends, the valve comprising a manual control member of the regulating member, the control member being mounted movably relative to the valve body and cooperating with the regulating member to control the flow rate and / or the fluid pressure allowed to flow from the upstream end to the downstream end according to the positioning the control member relative to the body, the valve comprising an electronic data indicating device (s) relative to the fluid content in a bottle connected to the tap, the electronic indication device comprising an organ for storing and processing data and at least one data display connected to the storage and data processing member, the valve comprising a position sensor of the manual control member of the regulating member, the position sensor being connected to the data storage and processing acquisition member in order to transmit to the latter a signal representative of the flow rate and / or the fluid pressure imposed by the regulating member, storage acquisition and data processing unit being configured, in response to the reception of this flow rate and / or imposed pressure signal, to control the display on the display of a piece of information dependent on the mode of use of the valve and in particular the fluid content and / or the amount of fluid withdrawn, the valve comprising a pressure sensor for measuring the pressure within the storage volume of a connected fluid bottle at the tap, the pressure sensor being connected to the storage acquisition and data processing member for transmitting to the latter a signal representative of the measured fluid pressure.
    [0002] The invention relates to a valve provided with an electronic device for indicating physical data relating to the contents of a bottle of pressurized fluid, in particular gas under pressure. The invention relates in particular to a so-called electronic and digital pressure gauge device. For example, reference may be made to document FR2868160A1 which describes an example of such a device. Such a device comprises a pressure sensor and an electronic logic that calculates and displays fluid quantity and / or autonomy data. To calculate and display such reliable autonomy information the device must perform several successive pressure measurements before evaluating the flow rate selected by the tap user. This generates a calculation time that does not allow to display immediately a range or withdrawal rate selected. A time of thirty to sixty seconds may for example be necessary. In addition, this device also has an identical reaction time in case of change of the withdrawal parameters (change of the selected withdrawal rate ...). The document WO2012164204A1 describes such a device which uses the detection of the position of the flow selector. The valve is used to supply oxygen to a medical ventilator (withdrawal rate imposed by the ventilator), the pressure signal measured by the manometer undergoes oscillation in phase with the ventilation phases. Due to the wide variety of ventilation modes, it is difficult to calculate or display relevant information. These devices also do not make it possible to signal and manage certain risk situations, in particular when the user imperfectly selects a withdrawal rate via the manual control device or in the event of an error in calculating the autonomy required. to a leak or other technical problem. An object of the present invention is to overcome all or part of the disadvantages of the prior art noted above.
    [0003] To this end, the valve according to the invention, moreover in accordance with the generic definition given in the preamble above, is essentially characterized in that the storage and data processing member is configured to receiving both the measured pressure signal of the pressure sensor and the flow and / or pressure signal supplied by the position sensor and for calculating, in response, a value of the amount of fluid remaining and / or withdrawn from these two signals, the storage acquisition and data processing member being configured to: - calculate a value of the amount of fluid remaining and / or withdrawn actual on the basis of the pressure measurement of the pressure sensor, - calculate a value of the amount of fluid remaining and / or withdrawn theoretically on the basis of the regulation imposed by the regulating member and measured by the position of the control member, - comparing said actual value based on ur measurement of the pressure sensor with the theoretical value imposed by the regulator and generate an alert signal in case of divergence between these actual and theoretical values above a determined safety threshold. This makes it possible to quickly and automatically indicate to the user that gas is drawn off, either because of a supply to a medical fan, or because of a leak. Furthermore, embodiments of the invention may include one or more of the following features: the value of the amount of fluid remaining and / or withdrawn comprises at least one of: the fluid pressure, the mass quantity or volume of fluid, the autonomy of fluid remaining in the bottle, the variation of quantity or of fluid pressure in the bottle, the flow rate of fluid withdrawn, the autonomy of the fluid remaining in quantity, the time autonomy of fluid remaining at a determined withdrawal rate, the safety threshold corresponds to a divergence of 15 to 35% and preferably 25% between the real and theoretical values, the data acquisition and data acquisition device is configured to calculate the theoretical remaining fluid autonomy from the measured initial pressure, the theoretical time pressure drop or the amount of gas generated by the flow rate and / or the pressure of the pressure outirage imposed by the regulator, and to calculate the actual fluid autonomy remaining from the measured initial pressure and the actual time pressure decrease or the amount of gas measured by the pressure sensor, - storage and data processing member is configured to calculate a range or fluid content information over a determined time interval of between one second and ten minutes and preferably between two seconds and one minute, from the current pressure and the theoretical time pressure decrease or the amount of gas imposed by the regulator, - the storage and data processing member is configured to calculate an autonomy value or of fluid content over a given time interval of between thirty seconds and ten minutes and preferably between one minute and six minutes from the pressure signal measured by the pressure sensor, the storage and data processing member is configured to read the pressure measured by the pressure sensor for a period of between 1ms (millisecond) and 100ms every 5s (second) at 15 60 s, the storage and data acquisition member is configured to read the position of the manual control member (5) measured by the position sensor for a duration of between 1 ms and 50 ms, every 1 to 20 seconds, the value of autonomy or theoretical fluid content remaining in the bottle is expressed in time remaining (respectively in the remaining quantity) by dividing the initial pressure measured by the pressure sensor (or respectively, a quantity of the current gas), by the theoretical pressure variation imposed by the regulating member (respectively the quantity variation imposed by the regulating member), according to a formula of the type: T remaining emps = Initial pressure / pressure variation imposed (or respectively: Remaining time = remaining quantity / imposed quantity variation), the quantity being estimated via the equation of perfect (PV = nRT) or real (PV = nZRT) ( SI units), with P the measured pressure, V the known volume of the bottle, n the quantity, R the perfect gas constant and T the measured or approximated temperature at the measured ambient temperature, Z the known compressibility factor per table or calculated, the storage and data processing member is configured to recalculate and possibly automatically display an update of the autonomy or fluid content value upon receipt of a signal from the data storage sensor. a position indicating a flow rate change and / or the fluid pressure imposed by the control member via the control member, - the position sensor of the control member comprises at least one of: a sensor capacitance if, a magnetic sensor, a mechanical sensor, - at least one of the components and in particular one of the sensors (of position, of pressure) is of the electric type and powered by a battery and / or an inductive system, said unless a component can be non-continuously powered to save power, the storage acquisition and data processing member can be configured to provide this power supply at the time of measurement. The invention also relates to a bottle of pressurized fluid comprising a valve according to any one of the above characteristics or hereafter. According to one possible feature after a filling of the bottle and before a first withdrawal, the storage acquisition and data processing member is configured to control the display on the display of a fixed information relating to the fluid content. in the bottle as long as the position sensor has not transmitted a signal representative of a flow rate and / or the fluid pressure withdrawn from the reservoir during a determined period of time and / or corresponding to a predetermined quantity of fluid. may also relate to any alternative device or process comprising any combination of the above or below features. Other features and advantages will appear on reading the description below, with reference to the figures in which: - Figure 1 shows a side view, schematic and partial, illustrating a valve mounted on a pressurized gas cylinder according to an example of a possible embodiment of the invention, - Figure 2 schematically and partially illustrates the structure and operation of a portion of the valve of Figure 1 - Figures 3 to 5 schematically illustrate and partially, the structure and operation of respectively three examples of position sensors of a valve according to the invention, - Figure 6 schematically shows two curves illustrating examples of signals generated by one or more position sensors of the figure. 5, - Figures 7 and 8 schematically and partially illustrate the structure and operation of respectively, a fourth example and a fifth example According to the invention, FIG. 9 schematically represents an example of a pressure curve measured as a function of time. Figure 1 shows schematically a bottle 2 of pressurized gas provided with a valve 1 capable of implementing the invention. The valve 1 comprises a body provided with an end intended to be mounted in the orifice of a bottle 2 of fluid under pressure (for example by screwing). Conventionally, the valve body 1 houses a first withdrawal circuit 3 comprising an upstream first end 13 communicating with the storage volume of the bottle 2. The withdrawal circuit 3 comprises a second downstream end 23 intended to be connected to a user organ withdrawn gas (for example a patient in the case of oxygen or another medical gas). The first withdrawal circuit 3 comprises a member 4 for regulating the flow rate and / or the pressure of the fluid drawn between the upstream and downstream ends 13. This regulating member 4 is, for example, a flow regulator with calibrated orifices 16 making it possible to select a gas flow withdrawn (see the schematic representation of Figure 3). Of course, any other regulating member may be envisaged, for example a proportional opening valve. The valve 1 comprises a member 5 for manual control of the member 4. The control member 5 is mounted movably relative to the valve body 1 and 30 cooperates with the regulating member 4 to control the flow rate and / or the pressure of fluid allowed to flow according to the position of the control member 5 relative to the valve body. The control member 5 comprises for example a rotary wheel. Of course, any other suitable system can be envisaged (pivoting lever, digital control, wireless control via a remote control, etc.). For example, the control member selects a calibrated orifice and / or controls a rate restriction valve based on its position among a plurality of stable discrete positions or a plurality of positions of a continuous displacement.
    [0004] In particular the stable positions can be referenced mechanically by a hard point (eg via a latching system). The valve 1 comprises an electronic device 6 indicating data (s) relative to the fluid content in a bottle 2 connected to the valve 1. The device may be of the type comprising a member 7 acquisition of storage and data processing and at least one data display 8 connected to the storage acquisition and data processing unit 7. The storage acquisition and data processing unit 7 comprises for example a computer and / or a microprocessor or any other equivalent system. Of course, this device may comprise one or more data receiving members (by wired and / or wireless connection) as well as one or more data transmission members (by wired and / or wireless connection). The valve 1 comprises a sensor 9 of the position of the body 5 of manual control of the control member 4. The position sensor 9 is connected to the storage acquisition and data processing member 7 to transmit to the latter a signal representative of the flow rate and / or the fluid pressure imposed by the regulating member 4. For example, the position sensor 9 of the control member 5 comprises a converter of the mechanical displacement of the control member into an electrical signal that can be used by the storage acquisition and data processing member 7.
    [0005] The detector is for example integral with a fixed part of the valve, or respectively of the control member, the detector providing an electrical or digital signal determined according to the position of the control member. This signal can be provided wired and / or wireless. The position sensor 9 of the control member 5 may comprise for example at least one of: a capacitive sensor, a magnetic sensor, a mechanical sensor, an optical sensor. The manual control member 5 and / or the regulating member 4 can be movable according to a plurality of discrete positions (mechanically stable or not) respectively corresponding to flow values and / or the fluid pressure allowed to pass from the end 13 upstream to the downstream end (with a graduation for example). As illustrated in FIG. 2, the tap also comprises a pressure sensor 10 for measuring the pressure within the storage volume of the bottle 2. The pressure sensor 10 is connected to the storage acquisition member 7 and data processing device for transmitting thereto (wired and / or wireless) a signal representative of the measured fluid pressure, in particular in real time or periodically. The pressure sensor 10 may for example be located at the upstream end of the first draw-off circuit 3 and / or at a second draw-off circuit. The storage acquisition and data processing member 7 is configured to calculate and display on the display 8 information of autonomy and / or of remaining content and / or of flow withdrawn.
    [0006] In addition, the storage acquisition and data processing member 7 may be configured, in response to the reception of this flow rate and / or imposed pressure signal, to control the display on the display 8 of FIG. relative information of the flow rate and / or the fluid pressure imposed by the regulating member 4. The storage acquisition and data processing member 7 is thus configured to receive both the pressure signal P measured from the pressure sensor 10 and the flow and / or pressure signal D supplied by the sensor 9. position. The storage acquisition and data processing member 7 can thus be programmed to calculate information of remaining fluid autonomy or flow rate drawn from these two pieces of information.
    [0007] The theoretical remaining fluid autonomy is determined for example by calculating, from the measured initial pressure, the theoretical time pressure decrease or the amount of gas generated by the flow and / or the withdrawal pressure D imposed by the control member 4. The actual remaining fluid life can be calculated solely on the basis of the pressure values measured by the pressure sensor. Furthermore, preferably, the storage acquisition and data processing member 7 is configured to: calculate the variation of quantity or pressure of the real fluid measured by the pressure sensor, calculate the variation in quantity or the theoretical fluid pressure imposed by the regulating member 4, comparing the variation in quantity or actual pressure measured by the pressure sensor with the variation in quantity or theoretical pressure imposed by the regulating member 4 and - Generate an alert signal in case of divergence between the latter above a certain security threshold (for example a divergence of 15 to 30% and in particular 25%). These measured quantity / pressure variations can, if necessary, be used to calculate the gas flow actually withdrawn. The theoretical information of autonomy or fluid content remaining in the bottle 2 can be expressed in time remaining (respectively in remaining quantity) by dividing the initial pressure measured by the pressure sensor 10 (or respectively, a quantity of the current gas ), by the theoretical pressure variation imposed by the regulating member 4 (respectively the quantity variation imposed by the regulating member 4), according to a formula for example of the type: Time remaining = Initial pressure / pressure variation imposed (or respectively: Remaining time = Remaining fluid content / imposed quantity variation). In the same way, the actual autonomy information can be expressed in the remaining time (respectively in the remaining quantity) by dividing the initial pressure measured by the pressure sensor (or respectively, a quantity of the current gas), by the variation actual pressure measured by the pressure sensor 10 (respectively the change in quantity calculated from the measured pressure P), according to a formula for example of the type: remaining time = initial pressure / actual pressure variation (or respectively: time remaining) = Remaining fluid content / measured quantity change).
    [0008] The variations of quantity or theoretical pressure can be calculated for example via the equation of the perfect gas PV = nRT or real PV = ZnRT (SI units), with P the measured pressure, V the known volume of the bottle, n the quantity , R is the ideal gas constant and T is the measured or approximated temperature at the measured ambient temperature, Z is the known compressibility factor (table or calculation). Similarly conversions between pressure and quantity can be calculated via the perfect gas equation or any other equivalent formula, the volume of the bottle 2 being known and indicated in the organ 7 acquisition of storage and data processing and the temperature can be measured by an external ambient sensor or calculated or indicated or approximated The device preferably comprises a temperature sensor internal or external to the bottle to correct the calculation of autonomy. The storage acquisition and data processing member 7 can be configured to calculate a range or fluid content information over a determined time interval of between fifteen seconds and ten minutes and preferably between thirty seconds and five seconds. minutes, from the pressure signal measured by the pressure sensor 10. The storage acquisition and data processing member 7 is preferably configured to periodically compare this autonomy information calculated on the basis of the pressure signal P measured with respect to the theoretical autonomy information calculated from the quantity or pressure variation imposed by the regulating member 4. The dynamic pressure measurement can make it possible to readjust, if necessary more precisely, the display of the actual flow withdrawn and / or the displayed autonomy. In this case, an alert signal (visual and / or audible and / or wireless) may be issued in case of divergence or anomaly. Similarly, the storage acquisition and data processing unit 7 can be configured to recalculate and possibly automatically display an update of the autonomy, content or fluid flow information on receipt of the data. a signal from the position sensor 9 indicating a flow rate change and / or the fluid pressure imposed by the control member 4 via the control member 5. This updated information (including the result of the new autonomy calculation) can be displayed either regularly and automatically, for example every 5 minutes to 20 minutes (even if the difference is small), or is displayed only when the difference is relatively large (for example at least 5% or at least 15% deviation) To calculate the remaining gas autonomy from such a signal, the storage and processing acquisition member 7 data can be configured to measure the pressure drop on the optimums to deduce the equivalent decay slope (see reference 9 in Figure 9) Alternatively or cumulatively, the storage acquisition and treatment processing member 7 The data can be configured to average a pressure drop over a relatively long time (for example, several minutes, for example ten minutes) in order to erase the image inaccuracies. 1le of the regulating member 4 is movable in a so-called "closing" position corresponding to a closure of the first withdrawal circuit 3. That is to say that the fluid flow admitted to pass from the upstream end 13 to the downstream end 23 is zero. In the case where the manual control member 5 is in its closed position and the variation of the signal representative of the fluid pressure within a bottle 2 is less than a determined variation threshold (for example equivalent to a pressure drop of 10 mbar / min (0.051 / min) measured by the pressure sensor 10), the storage acquisition and data processing member 7 is preferably configured to control the display on the display 8 fixed information relating to the pressure and / or the amount of fluid in the bottle 2. That is to say that the device detects that the bottle 12 is not withdrawn and displays for example information relating to its content. As illustrated in Figure 1, the valve 1 may comprise a second circuit 11 for withdrawal, for example separate from the first circuit 3 for withdrawal and which avoids the flow control member 4 and / or the pressure of the first withdrawal circuit 3 .
    [0009] This second circuit 11 of withdrawal may optionally have a common portion with the first circuit 3 of withdrawal. This second circuit 11 of withdrawal is for example provided to provide a gas at a controlled pressure (via a pressure regulator 14). For example, the second withdrawal circuit 11 provides an adjustable or fixed pressure and of the order of three to ten bar to a user device. For example, the second draw-off circuit 11 has an outlet connection 101 (for example via a notched outlet) that can be connected to a medical fan to supply oxygen to the latter.
    [0010] This second withdrawal circuit 11 can supply gas to the cylinder 2 independently of the first withdrawal circuit 3. Thus, when the manual control member 5 is in its closed position and the variation of the signal representative of the fluid pressure within a bottle 2 (measured by the pressure sensor 10) is greater than a threshold of determined variation (for example 25mbar per minute, the storage acquisition and data processing member 7 can detect a withdrawal of fluid via the second circuit 11 of withdrawal or, if this second circuit 11 of withdrawal is not used , a possible leakage of fluid.
    [0011] The storage acquisition and data processing member 7 can, if necessary, control the display on the display 8 or the sending (wirelessly, wired or audibly) of information relating to a withdrawal via the second circuit 11 for withdrawal and or relating to a leak (warning signal). In particular, when the manual control member 5 is in its so-called closing position and the variation of the signal representative of the fluid pressure within a bottle is greater than a determined variation threshold (for example 25 mbar per minute). minute), the storage acquisition and data processing member 7 is configured to detect at least one characteristic of the shape of the variation of fluid pressure in the bottle due to the withdrawal via the second withdrawal circuit 11 The at least one characteristic comprises for example: a periodic character of the pressure or quantity variation, the frequency of the pressure or quantity variation, the level of pressure or quantity variation, etc. As illustrated schematically in FIG. FIG. 9, this makes it possible to detect, after two to three pressure oscillations instantaneously, for example a periodic withdrawal corresponding to a supply of gas to a ventilator. Respiratory Indeed, even if the gas withdrawn does not pass through the flow regulator 4, the flow rate is regulated directly by a ventilator and depends on the breathing of the patient. This flow thus delivered is not constant but oscillates in time (according to the breathing of the patient). The storage acquisition and data processing unit 7 may be configured to detect (recognize) a characteristic pressure drop of a ventilation according to the following principle: - measurement of the pressure signal in a close periodic manner (for example all 0.5 to 2 seconds, especially every second), - identification of a niche type signal having a frequency of five to twenty-five slots (breaths) per minute).
    [0012] In the case where this pressure signal does not correspond to a ventilation signal (for example a continuous decreasing variation), the storage acquisition and data processing member 7 can determine that it is a leakage or improper use of the gas and may report it in the same way.
    [0013] According to an advantageous feature, when the manual control member 5 is disposed in an intermediate position between two respective adjacent flow rate values and / or the fluid pressure admitted to pass from the upstream end 13 to the downstream end 23, storage and data processing unit 7 is configured to select and display on the display 8 one or both of these adjacent values or an intermediate value between these two adjacent values or no encrypted value. Likewise, one of these two adjacent values or an intermediate value between these two adjacent values can be used for the theoretical calculation of a withdrawn flow rate or remaining amount as described above. Preferably, the storage acquisition and data processing member 7 displays and / or signals (wireless or wired or audible remote transmission) the value that is the most critical or the most unfavorable for the user. This makes it possible to ergonomically alert the user to erroneous manipulation by displaying relevant but penalizing information forcing him to correct his selection. For example, when the manual control member is disposed in an intermediate position between two respective adjacent flow rate values, the data acquisition and data acquisition member 7 is configured to calculate and display on the display. 8 an autonomy or fluid content information remaining in the bottle based on the highest value of the two adjacent values.
    [0014] Thus, if for example the user positions the control member between the positions n liter per minute and n + 1 liter per minute (where n is an integer), the storage acquisition and data processing unit 7 can be configured to calculate a range based on the flow rate value taken from n + 1 liter per minute (less autonomy than if it had been calculated with the value of n liter per minute). Likewise, when the manual control member is disposed in an intermediate position between two respective adjacent flow rate values, the storage and data processing acquisition member 7 may be configured to display on the display 8 a information relating to the withdrawn flow imposed by the regulating member 4 corresponding to the lowest value of the two adjacent values. Thus, if for example the user positions the control member between the positions n liter per minute and n + 1 liter per minute (where n is an integer), the storage acquisition and data processing unit 7 can be configured to display on the display 8 information based on the flow rate value taken from n liter per minute (the lowest rate that may for example be below the medical prescription). This, in addition to or instead of an alarm, will prompt the user to correct the flow selection. Alternatively, a range of values is displayed (range of values whose ends correspond to these two adjacent values, eg "flow rate between n and n + 1 liters per minute"). Alternatively, the storage acquisition and data processing member 7 removes the display of all or part of the information. This last solution will have even more effect on the user. The device may be configured in this case to deliver a flow of fluid corresponding to one of the two adjacent values, in particular the displayed value. Preferably, when the manual control member 5 is disposed in an intermediate position between two respective adjacent flow rate values and / or the admitted fluid pressure to pass from the upstream end 13 to the downstream end 23, the 4 is configured to allow the withdrawal of a non-zero fluid flow rate between said two respective adjacent flow rate and / or pressure, including the displayed value. Alternatively, when the manual control member 5 is disposed in an intermediate position between two respective adjacent flow rate values and / or the fluid pressure admitted to pass from the upstream end 13 to the downstream end 23, the member 4 The control circuit is shaped to allow withdrawal of a fluid flow rate equal to one of said two adjacent flow rate and / or pressure values.
    [0015] In addition, in the case where the regulating member 4 makes it possible to vary continuously (non-discretely) the flow rate or the pressure, the storage acquisition and data processing member 7 can be configured to display the precise value of selected flow rate. As illustrated in FIG. 3, the position sensor 9 of the control member 5 may comprise, for example, a mechanism 19 meshing with the control member 5 (a gearing and / or notching system) and a potentiometer 39. The mechanism comprises a moving part 29 (for example a wheel or a rod or a rack) forming a slider of the potentiometer 39. In this way, the position sensor 9 provides a value of tension and / or resistance determined according to the position of the control member 5. In the example of FIG. 4, the position sensor 9 of the control member 5 comprises a mechanism meshing with the control member 5 comprising an optical and / or digital coder 49, for example a wire coder (wires). conductor and a ground wire). The encoder 49 provides a digital signal determined according to the position of the control member. Depending on the position of the mechanism, one or more wires are energized or short-circuited forming a plurality of distinct signals to characterize different positions (for example 2n-1 for a n-wire system). As illustrated in FIG. 5, the position sensor 9 of the control member 5 can comprise a magnetic system comprising at least one magnet 59 integral with the control member 5 and at least one magnetic field detector 69, 79 of the at least one magnet 59. In case of displacement (such as a rotation) of the control member 5, a detector 69 detects for example a magnetic field E as a function of the displacement D which oscillates and makes it possible to characterize a plurality of positions (see Figure 6). When the device comprises a second detector 79 (or more), several separate signals can be operated simultaneously to improve the detection of distinct positions.
    [0016] As illustrated in FIGS. 7 and 8, the position sensor 9 of the control member 5 may comprise a capacitive system measuring an electrical capacitance between a fixed magnetic reference 89 and a mobile part 99 connected to the control member 5. these systems have the advantage of reliable detection without the need to provide electrical son associated with a moving part of the mechanism. The potentiometer system and more generally each detection system can be easily calibrated during manufacture.
    [0017] Thus, in this case, the simultaneous detection of the closed position (graduation "0" = "zero" for example) on the position detector 5 and a pressure drop, it is thus possible to detect instantly and automatically the 2. A rapid autonomy calculation algorithm (based on the detected position of the control member) described below is not used, and only a calculation of autonomy adapted to this withdrawal mode is performed on the basis of the pressure measurement P by the pressure sensor 10. This autonomy calculation algorithm based on the pressure measurement 10 can thus be automatically activated.
    [0018] Thus, when the manual control member 5 is in its closed position and the variation of the signal representative of the fluid pressure within a bottle 2 is greater than a determined threshold of variation, the member 7 of FIG. Data storage and processing acquisition may be configured to calculate fluid remaining information from the sole measurement of the initial pressure signal and the variation of that pressure signal given by the pressure sensor. The storage acquisition and data processing member 7 can in particular be configured to control the display on the display 8 of this calculated autonomy information and / or information relating to the pressure or the initial quantity of fluid. in the bottle 2.
    [0019] In addition, the storage acquisition and data processing member 7 may be configured to include a guaranteed seal function indicating that the bottle 2 has not been used following a filling. Thus, before a first racking, the storage acquisition and data processing unit 7 can control the display on the display 8 of a fixed information relating to the fluid content in the bottle 2 (and / or information of the "full bottle" type) as long as the position sensor 9 has not transmitted a signal representative of a flow rate and / or the fluid pressure withdrawn from the tank 2 during a determined period of time and / or corresponding to a quantity determined fluid (for example 20 liters of gas withdrawn). This detection can be ensured or supplemented by the information given by the pressure sensor. Although the invention is relatively simple and inexpensive it is easy to see that it allows faster display of flow rate and autonomy information. The invention is advantageously applied to pressurized gas cylinders, in particular bottles containing oxygen under pressure.
    权利要求:
    Claims (13)
    [0001]
    REVENDICATIONS1. A valve for a pressurized fluid bottle comprising a body provided with an end intended to be mounted in the orifice of a bottle of pressurized fluid, the body of the valve (1) housing a first withdrawal circuit (3) comprising a first end (13) upstream for communicating the storage volume of a bottle of fluid under pressure and a second end (23) downstream intended to be connected to a user member of the withdrawn gas, the first circuit (3) for withdrawal comprising a member (4) for regulating the flow rate and / or the pressure of the fluid drawn between the upstream (13) and downstream (23) ends, the valve (1) comprising a member (5) for manually controlling the member ( 4), the control member (5) being mounted movably relative to the body of the valve (1) and cooperating with the regulating member (4) to control the flow rate and / or the fluid pressure allowed to circulate from the end (13) upstream towards the end downstream (23) according to the position of the control member (5) relative to the body (5), the valve (1) comprising an electronic device (6) for indicating data (s) relative to the content of fluid in a bottle connected to the tap (1), the electronic indication device (6) comprising a data storage and data acquisition member (7) and at least one data display (8) connected to the storage acquisition and data processing device (7), the valve (1) comprising a sensor (9) for the position of the body (5) for manual control of the regulating member (4), position sensor (9) being connected to the data storage and processing acquisition member (7) for transmitting to the latter a signal representative of the flow rate and / or the fluid pressure imposed by the member (4) for regulating, the storage acquisition and data processing device (7) being configured, in response to the reception of this flow signal and / or imposed pressure, to control the display on the display (8) of information relating to the operating mode of the valve and in particular to the fluid content and / or the amount of fluid withdrawn, the tap comprising a pressure sensor (10) for measuring the pressure within the storage volume of a bottle (2) of fluid connected to the valve (1), the pressure sensor (10) being connected to the member (7) ) for storing and processing data to transmit to the latter a signal representative of the measured fluid pressure, characterized in that the storage acquisition and data processing member (7) is configured to receive both the pressure signal (P) measured from the pressure sensor (10) and the flow and / or pressure signal (D) supplied by the position sensor (9) and to calculate, in response, a value of amount of fluid remaining and / or withdrawn from these two signals, the member (7) storage and data processing apparatus being configured to: - calculate a value of actual and / or withdrawn actual fluid quantity based on pressure measurement of the pressure sensor (10), - calculate a quantity value of remaining fluid and / or theoretical withdrawn on the basis of the regulation imposed by the regulating member (4) and measured by the position of the control member (5), - comparing said actual value based on the measurement of the sensor (10) pressure with the theoretical value imposed by the control member (4) and - generate an alert signal in the event of a discrepancy between these actual and theoretical values greater than a determined safety threshold.
    [0002]
    2. Tap according to claim 1, characterized in that the amount of fluid remaining and / or withdrawn value comprises at least one of: the fluid pressure, the mass or volume quantity of fluid, the remaining fluid autonomy in the bottle, the variation in quantity or pressure of fluid in the bottle, the flow rate of fluid withdrawn, the autonomy of fluid remaining in quantity, the remaining time of fluid remaining at a determined withdrawal rate.
    [0003]
    3. Tap according to claim 1 or 2, characterized in that the safety threshold corresponds to a divergence of 15 to 35% and preferably 25% between the actual and theoretical values.
    [0004]
    4. Valve according to any one of claims 1 to 3, characterized in that the member (7) for acquisition of storage and data processing is configured to calculate the theoretical autonomy of fluid remaining from the pressure initial measured value, of the theoretical depression or the quantity of gas generated by the flow rate and / or the pressure (D) of withdrawal imposed by the regulating member (4), and to calculate the real autonomy of the remaining fluid from the measured initial pressure and the actual time pressure decrease or the amount of gas measured by the pressure sensor (10).
    [0005]
    5. Valve according to any one of claims 1 to 4, characterized in that the member (7) for acquisition of storage and data processing is configured to calculate an information of autonomy or fluid content on a determined time interval between one second and ten minutes and preferably between two seconds and one minute, from the current pressure and the theoretical time pressure decrease or the amount of gas imposed by the body (4) of regulation.
    [0006]
    6. Tap according to any one of claims 1 to 5, characterized in that the member (7) for acquisition of storage and data processing is configured to calculate a value of autonomy or fluid content on a determined time interval between thirty seconds and ten minutes and preferably between one minute and six minutes from the pressure signal measured by the pressure sensor (10).
    [0007]
    7. Tap according to any one of claims 1 to 6, characterized in that the member (7) for acquisition of storage and data processing is configured to record the pressure measured by the pressure sensor (10) during a duration between 1ms (millisecond) and 100ms every 5s (second) to 60s
    [0008]
    8. Tap according to any one of claims 1 to 7, characterized in that the member (7) for acquisition of storage and data processing is configured to raise the position of the body (5) manual control measured by the sensor (9) position for a period of between 1 ms and 50 ms, every 1 to 20 seconds.
    [0009]
    9. Tap according to any one of claims 1 to 8, characterized in that the value of autonomy or theoretical fluid content remaining in the bottle is expressed in remaining time (respectively in remaining quantity) by dividing the measured initial pressure by the pressure sensor (10) (or respectively, a quantity of the current gas), by the theoretical pressure variation imposed by the regulating member (4) (respectively the quantity variation imposed by the regulating member (4) ), according to a formula of the type: Remaining time = Initial pressure / pressure variation imposed (or respectively: Remaining time = remaining quantity / imposed quantity variation), the quantity being estimated via the perfect gas equation (PV = nRT) or real (PV = nZRT) (SI units), with P the measured pressure, V the known volume of the bottle, n the quantity, R the ideal gas constant and T the measured or approximated temperature at room temperature measured, Z the known compressibility factor per table or calculated.
    [0010]
    10. Tap according to any one of claims 1 to 9, characterized in that the member (7) for acquisition of storage and data processing is configured to recalculate and optionally automatically display an update of the value of autonomy or fluid content upon receipt of a signal from the position sensor (9) indicating a flow rate change and / or the fluid pressure imposed by the control member (4) via the member (5) control.
    [0011]
    11. Valve according to any one of claims 1 to 10, characterized in that the sensor (9) of the position of the control member (5) comprises at least one of: a capacitive sensor, a magnetic sensor, a mechanical sensor.
    [0012]
    12. Bottle of fluid under pressure characterized in that it comprises a valve according to any one of claims 1 to 11.
    [0013]
    13. Bottle according to claim 12 characterized in that after a filling of the bottle and before a first withdrawal, the member (7) of storage acquisition and data processing is configured to control the display on the display (8) fixed information relating to the fluid content in the bottle until the position sensor (9) has not transmitted a signal representative of a flow rate and / or the fluid pressure withdrawn from the reservoir (2) during a determined period of time and / or corresponding to a determined quantity of fluid.
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    同族专利:
    公开号 | 公开日
    WO2015110718A1|2015-07-30|
    AU2014378602A1|2016-08-25|
    CN105980765B|2019-03-08|
    US10247362B2|2019-04-02|
    DK3097341T3|2018-11-05|
    PT3097341T|2018-11-09|
    CA2937295A1|2015-07-30|
    FR3016679B1|2016-01-22|
    EP3097341A1|2016-11-30|
    US20170002981A1|2017-01-05|
    CN105980765A|2016-09-28|
    AU2014378602B2|2019-01-31|
    ZA201605560B|2017-09-27|
    EP3097341B1|2018-09-19|
    ES2691968T3|2018-11-29|
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    US20050103342A1|2003-11-14|2005-05-19|Jorczak Kevin D.|Remote control gas regulation system|
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    US20100245098A1|2007-10-24|2010-09-30|Toyota Jidosha Kabushiki Kaisha|Gas level display controller, gas level display device, and gas level display control method|
    EP2339222A2|2009-12-21|2011-06-29|Linde Aktiengesellschaft|Pressure vessel with pressure sensor|
    GB2486018A|2010-12-02|2012-06-06|Bedford Hospital Nhs Trust|Apparatus for monitoring depletion and movement of a medical gas supply|
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    FR2915798B1|2007-05-03|2010-04-30|Taema|METHOD FOR CONTROLLING AN ELECTRONIC MANOMETER AND CORRESPONDING MANOMETER|
    WO2008149312A1|2007-06-05|2008-12-11|L'air Liquide-Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude|Gas control device with protective cover|
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    DE202008005466U1|2008-04-18|2008-09-25|Festo Ag & Co. Kg|Sensor arrangement for detecting at least two angular positions of an arrangement rotating about a rotation axis|
    US20110140850A1|2009-12-16|2011-06-16|Matheson Tri-Gas, Inc.|Real time tracking and monitoring of gas cylinders|
    EP2523744A4|2010-01-14|2017-01-11|Entegris Inc.|Ventilation gas management systems and processes|
    US9714860B2|2010-04-13|2017-07-25|Advanced Interactive Response Systems|Gas supply warning and communication system|US10655786B1|2016-03-21|2020-05-19|Essex Industries, Inc.|Electronic pressure gauge for pressurized system with variable outlet flows|
    CN109520559A|2018-09-30|2019-03-26|西安工程大学|A kind of real-time monitoring device of cylinder gas pressure and temperature|
    FR3093781B1|2019-03-12|2021-02-12|Air Liquide|Valve, pressurized fluid container and methods of filling and withdrawing.|
    EP3875835A1|2020-03-04|2021-09-08|Brita GmbH|Method and device for determining a filling level of a gas bottle|
    法律状态:
    2015-01-22| PLFP| Fee payment|Year of fee payment: 2 |
    2016-01-21| PLFP| Fee payment|Year of fee payment: 3 |
    2017-01-20| PLFP| Fee payment|Year of fee payment: 4 |
    2018-01-19| PLFP| Fee payment|Year of fee payment: 5 |
    2019-01-23| PLFP| Fee payment|Year of fee payment: 6 |
    2020-10-16| ST| Notification of lapse|Effective date: 20200905 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1450526A|FR3016679B1|2014-01-22|2014-01-22|VALVE FOR PRESSURIZED FLUID BOTTLE AND CORRESPONDING BOTTLE|FR1450526A| FR3016679B1|2014-01-22|2014-01-22|VALVE FOR PRESSURIZED FLUID BOTTLE AND CORRESPONDING BOTTLE|
    EP14814961.0A| EP3097341B1|2014-01-22|2014-11-26|Valve for pressurized fluid cylinder and corresponding cylinder|
    ES14814961.0T| ES2691968T3|2014-01-22|2014-11-26|Stopcock for pressurized fluid bottle and corresponding bottle|
    PCT/FR2014/053045| WO2015110718A1|2014-01-22|2014-11-26|Valve for pressurized fluid cylinder and corresponding cylinder|
    PT14814961T| PT3097341T|2014-01-22|2014-11-26|Valve for pressurized fluid cylinder and corresponding cylinder|
    DK14814961.0T| DK3097341T3|2014-01-22|2014-11-26|FLUID BOTTLE VALVE UNDER PRESSURE AND SIMILAR BOTTLE|
    CN201480073391.8A| CN105980765B|2014-01-22|2014-11-26|Valve and corresponding bottle for pressurized fluid bottle|
    AU2014378602A| AU2014378602B2|2014-01-22|2014-11-26|Valve for pressurized fluid cylinder and corresponding cylinder|
    CA2937295A| CA2937295A1|2014-01-22|2014-11-26|Valve for pressurized fluid cylinder and corresponding cylinder|
    US15/113,092| US10247362B2|2014-01-22|2014-11-26|Valve for a pressurized fluid cylinder and corresponding cylinder|
    ZA2016/05560A| ZA201605560B|2014-01-22|2016-08-11|Valve for pressurized fluid cylinder and corresponding cylinder|
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