• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    Device and method for filling pressurized gas tanks, especially pressurized hydrogen tanks for vehicles, the device comprising a source (2) of liquefied gas, a transfer circuit (3) comprising two parallel transfer lines each having an upstream end (3) connected to the source (2) of liquefied gas at least two separate downstream ends (4) intended to be each connected in a removable manner with a tank (22) to be filled, each of the two transfer lines comprising: a pump (5), a member (6) for vaporizing the pumped fluid, a branch (13) bypassing the member (6) for vaporization and a set of distribution valve (s) (7, 8) configured for control the flow of fluid pumped and distributed between the vaporization member (6) and the branch (13) bypass, the device (1) further comprising a storage unit (s) buffer (9, 10) connected (s) ) in parallel with each of the two lines of transfer via a set of valve (s)
    公开号:FR3086367A1
    申请号:FR1858700
    申请日:2018-09-25
    公开日:2020-03-27
    发明作者:Vincent FAIRY；Simon CRISPEL；Anh Thao THIEU；Marcus Buck
    申请人:Air Liquide SA；LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude；
    IPC主号:
    专利说明:

    The invention relates to a device for filling pressurized gas tanks.
    The invention relates more particularly to a device for filling pressurized gas tanks, in particular hydrogen tanks under pressure from vehicles, the device comprising a source of liquefied gas, a transfer circuit comprising two parallel transfer lines each having a upstream end connected to the source of liquefied gas, each transfer line comprising a downstream end intended to be removably connected with a tank to be filled.
    Hydrogen gas refueling stations using liquid hydrogen sources are known. These known devices allow the cold of liquid hydrogen to be used to produce a precooled pressurized gas for rapid filling without excessive rise in the temperature of the gas in the tank during filling.
    See for example US5934081 or the article "A rapid fill hydrogen fuel station for fuel cell nozzles" by V Raman D. Farese and J Hansel (12th World Energy conference Hydrogen energy Progress 2 p. 1629-1642). See also the article "Hydrogen vehicle fueling station" by D.E. Daney, and al (Advances in Cryogenic Engineering Vol. 41, 1996).
    These known arrangements do not guarantee satisfactory performance of the installation or its modularity.
    An object of the present invention is to overcome all or part of the drawbacks of the prior art noted above.
    To this end, the device according to the invention, furthermore in accordance with the generic definition given in the preamble above, is essentially characterized in that each of the two transfer lines comprises: a pump, a device for vaporizing the pumped fluid, a branch of the vaporizing member and a set of distribution valve (s) configured to control the flow of pumped fluid and distributed between the vaporizing member and the branch of branch, the device further comprising a buffer storage assembly (s) connected in parallel to each of the two transfer lines via a valve assembly (s).
    Furthermore, embodiments of the invention may include one or more of the following characteristics:
    - the buffer storage unit (s) is connected to each transfer line between the spraying member and the mixing point between the fluid having passed through the spraying member and the fluid having passed through the branch branch,
    - the buffer storage unit (s) is connected to each transfer line via a respective expansion valve,
    - the distribution valve assembly (s) of each transfer line comprises a first distribution valve located downstream of the vaporization member and upstream of the point of mixing with the fluid passed through the branch branch, the distribution valve assembly (s) comprising second distribution valve in the branch branch,
    - the buffer storage unit (s) comprises two or more than two buffer storage units connected in parallel to each transfer line, each buffer storage being connected to each transfer line via a respective isolation valve,
    - the transfer circuit comprises a connection line connecting the two transfer lines at the outputs of the two pumps, said connection line comprising an isolation valve,
    the two transfer lines include at least one thermally insulated portion,
    the two transfer lines comprise at least one pressure sensor and / or at least one temperature sensor measuring the pressure, respectively the temperature, in particular near the downstream end,
    - during at least part of the filling, in particular when the determined gas flow rate is less than or equal to the maximum flow rate of the pump, the gas flow rate transferred to the tank consists only of the gas flow rate supplied by the pump and distributed between l 'vaporizer and a branch branch,
    - the flow rate determined to fill the tank varies between zero and 100g / second and in particular between 10 and 60g / second,
    - the pump is a variable speed pump and in that the gas flow transferred into the tank during filling is controlled by controlling the speed of the pump and possibly the quantity of gas supplied by the storage unit (s) buffer,
    the temperature of the pressurized gas transferred to the tank during filling is controlled by controlling the relative distribution between the relatively hot gas passing through the vaporizing member and the relatively cold gas passing through the branch branch and possibly the amount of relatively hot gas from the buffer storage unit (s),
    - the additional gas flow supplied by the buffer storage unit (s) is controlled in response to a pressure signal measured at the downstream end of the transfer line,
    - the buffer storage assembly (s) includes several buffer storage connected in parallel to each transfer line and used successively in a cascade process to supply gas to the transfer line or lines.
    The invention also relates to a method for filling at least one pressurized gas tank with a determined gas flow rate at a determined temperature to establish a determined filling ramp in the tank, in which the method uses a compliant filling device to any of the above or below features.
    According to other possible particularities:
    - the gas flow rate is variable and modified over time,
    - during at least part of the filling, in particular when the determined gas flow rate is greater than the maximum pump flow rate, the gas flow rate transferred to the tank is the sum of a part of the gas flow rate supplied by the pump and distributed between the vaporization member and the bypass branch, and, on the other hand, an additional gas flow supplied by the buffer storage unit (s),
    the method comprises a step of filling a reservoir with a gas flow comprising the sum of the gas flows supplied by the pumps of two transfer lines via the transfer of a gas flow from a transfer line into the '' other transfer line,
    the method comprises, before or at the start of filling a reservoir, a step of cooling said transfer line comprising a transfer of gas at a determined temperature controlled by controlling the relative distribution between the relatively hot gas passing through the member vaporization and the relatively cold gas passing through the branch branch and possibly the quantity of relatively hot gas coming from the buffer storage unit (s),
    the cooling step of said transfer line is carried out by controlling the opening of the distribution valves between the vaporization member and the bypass branch and of any additional gas flow supplied by the storage assembly ( s) buffer according to an “open loop (“ feedforward ”) type control and / or according to a control loop based on a temperature measured at the transfer line,
    the cooling step of said transfer line comprises a purging step towards the outside or towards a member for recovering the gas transferred at a determined temperature controlled in the transfer line to be cooled.
    The invention may also relate to any alternative device or process comprising any combination of the above or below characteristics within the scope of the claims.
    Other particularities and advantages will appear on reading the description below, made with reference to the figures in which:
    FIG. 1 represents a schematic and partial view illustrating an example of structure and operation of an example of a device according to the invention,
    - Figure 2 shows a graph of the evolution of parameters according to a possible example of filling according to the invention.
    The device 1 for filling pressurized gas tanks (in particular pressurized hydrogen tanks for vehicles) shown in FIG. 1 comprises a source 2 of liquefied gas. The source of liquefied gas comprises for example at least one storage of liquefied gas isolated under vacuum and / or a source of liquid gas (a liquefier or any other suitable device).
    Note that, in the case where the gas is hydrogen (H2), the state of the fluid will be designated for the sake of simplification by the terms "gas" or "liquid" usually used, however, depending on the pressure of the fluid. will actually be a supercritical fluid.
    The device 1 comprises a transfer circuit 3 comprising two parallel fluid transfer lines each having an upstream end 3 connected to the source 2 of liquefied gas in order to take liquefied gas there. Each transfer line has a respective downstream end 4 intended to be each connected in a removable manner with a reservoir 22 to be filled (for example via a flexible portion provided with a quick connector and with suitable valve (s) if necessary).
    Note that the example in Figure 1 has two transfer lines but could have more than two.
    Each of the two transfer lines comprises a pump 5, a member 6 for spraying the pumped fluid and a branch 13 for selective bypass of the spray member 6.
    In addition, the lines each include a set of distribution valve (s) 7, 8 configured to control the flow of fluid pumped and distributed between the vaporization member 6 (where the liquid is heated and vaporized and therefore relatively hotter and relatively high pressure) and the branch 13 bypass (where the liquid is substantially at the thermodynamic conditions of its output from the pump 5; therefore relatively cold).
    Downstream of the vaporization member 6 the two parallel portions meet at a point of mixing of the two relatively hot and cold fluids.
    The set of valves 7, 8 for distributing each transfer line comprises for example a first distribution valve 7 preferably located downstream of the spraying member 6 and upstream of the point of mixing with the fluid passed through the branch 13 bypass The set of distribution valves 7, 8 may further comprise a second distribution valve 8 in the branch 13 of bypass (upstream of the mixing point).
    Of course, any other distribution system could be envisaged, in particular a three-way valve system.
    The distribution valves 7 being located downstream of the reheating member 6 and upstream of the mixing point, this allows the use of valves working at room temperature (non cryogenic) and which manage a relatively low flow rate. This increases the reliability of the installation and limits its cost.
    The circuit preferably also includes, in each transfer line, an upstream valve 23 located between the outlet of the pump 5 and before the vaporization and bypass branches.
    Conventionally, the temperature of the fluid at the outlet of the filling gun (end 4) can thus be controlled via this mixture, to be maintained for example at a determined temperature in particular between -33 ° C and -40 ° C.
    This makes it possible to obtain a gas flow at a determined pressure and temperature provided for filling the reservoir 22 while limiting heating in the latter.
    The vaporization member 6 is for example a heating heat exchanger ensuring a thermal exchange of the liquid hydrogen with a heat source (air or any other heating element).
    The device 1 further comprising one or more buffer storage (s) 9, 10 of pressurized gas connected (s) in parallel to each of the two transfer lines via a respective valve assembly (s) 11 to 16.
    This architecture which provides a pump 5 for each transfer line (for each filling line of a tank 22) has many advantages compared to known systems. This allows a good modularity of the station (several simultaneous filling possible, possibility of adding or removing a transfer line without affecting the performance of other lines ...).
    In addition, this solution improves the performance of the device. Indeed, according to this arrangement, the pumps 5 of each of the transfer lines thus have better volumetric and energy efficiency at low pressure in particular.
    Indeed, the fact of dedicating a pump 5 per transfer line (“dispense” in English) makes it possible to supply the hydrogen at the pressure required by the reservoir 22 to be filled while limiting the performance losses, the wear of the pump. 5 and the Joule-Thomson expansion losses.
    Each pump 5 can thus be fully used in the zone of use offering its best energy and volumetric efficiency at relatively low pressure between 200 bar to 900 bar (instead of the interval between 700 and 900 bar in the case where only one pump is connected directly to buffer storage and used for several transfer lines). Such low pressure operation enabled by the invention makes it possible to reduce the energy consumption of the pump by up to 50%.
    As illustrated in FIG. 1, the buffer storages 9, 10 are preferably connected to each transfer line between the spraying member 6 and the mixing point between the fluid having passed through the spraying member 6 and the fluid having transited by branch 13 bypass.
    For example, the buffer stores 9, 10 can be connected in parallel to each transfer line via a respective expansion valve 15, 16. In addition, each buffer storage 9, 10 may include a respective isolation valve 11, 12 located between the inlet / outlet of the storage 9, 10 and each expansion valve 15, 16.
    These valves 11, 12, 25, 14 for isolating the separate storage facilities for each dispensing transfer line make it possible to pool the buffer storage facilities while retaining the independence of the transfer lines.
    As shown in FIG. 1, the transfer circuit 3 can advantageously comprise at least one connection line 17 connecting two (or more) transfer lines at the outputs of the pumps 5. The connection line 17 comprises for example a valve 18 insulation. This connection pipe 17 and its valve 18 allow, if necessary, a pooling (addition) of the pumped flows if necessary (for example in the case of filling of large tanks and / or in the event of a pump failure) .
    As shown diagrammatically in FIG. 1, at least a portion 19 of each transfer line can be thermally insulated (not necessarily under vacuum and / or cooled). In addition, each line can include at least one pressure sensor 20 and / or at least one temperature sensor 21 measuring the pressure / temperature therein, in particular near the downstream end of connection to a reservoir 22.
    All or part of the valves can be controlled valves, for example by an electronic controller 24 comprising a microprocessor and / or a computer provided with a data acquisition, storage and processing system. The controller 24 can be connected to the sensors and various other organs of the device (pumps 5 in particular) for the acquisition of data, the control and the piloting of these organs.
    As illustrated in FIG. 2 by way of nonlimiting example, the filling of a tank is preferably carried out according to a defined (pre) filling ramp. For example, the pump 5 and the set of valves is controlled to ensure a determined pressure build-up speed in the tank (P22 = pressure in the tank), for example essentially linear. For example, the pressure P4 measured in the transfer line 4 (and representative of the pressure P22 in the reservoir 22) is controlled to be linearly increasing over time. This can be obtained by controlling the mass M22 in the tank 22 over time T and therefore the flow rate Q of gas transferred over time. This flow rate is defined according to the filling conditions (quantity, tank volume, temperature, etc.).
    The transfer of the required gas flow rate can be provided by the pump 5 and possibly supplemented by an additional gas flow rate supplied by the buffer storage (s) 9, 10.
    In the case of nominal filling, a tank must be filled, for example, with 5 to 7 kg of hydrogen at an ambient temperature of 15 ° C in a few minutes (three minutes for example) according to a filling ramp defined by a filling protocol.
    For example, at the start of filling, only the pump 5 may be sufficient to provide the flow required to fill the vehicle. Depending on the pressure ramp, this flow increases from zero from the start of filling to the maximum pump flow.
    The pressure ramp is controlled (obtained) for example by modulating the speed of the pump 5. The pressure supplied by the pump 5 is the pressure requested at the end of the transfer line by the reservoir 22 to be filled. This pressure can typically be of the order of 50 to 300 bar depending on the initial pressure of the reservoir 22.
    The hydrogen which transits via the heated vaporization member 6, while the branch 13 bypass makes it possible to convey cryogenic hydrogen at its pump outlet temperature 5.
    The opening of the two valves 7, 8 can be controlled to reach the adequate distribution in order to reach a target gas temperature at the downstream end 4.
    If the line is too hot (measured temperature 21 above a target temperature), the valve 7 on the "hot" side can be closed in particular completely and the valve 8 on the "cold" side, for example open completely, to let 100% pass through. cold flow to cool the line.
    If the line is cold, the cold flow / hot flow ratio can be regulated by the valves 7, 8 for example between 30% and 50% depending on the performance of the pump 5 and / or the ambient temperature.
    As the reservoir 22 fills, the filling flow rate can increase and can in particular exceed the capacity of the pump 5.
    The controller can detect a lack of pressure at the line relative to a target pressure and to remedy this can open the valve or valves 11, 15 of the buffer storage.
    That is to say that the control of the pump flow and the flow supplied by the buffer storage can be controlled to ensure a pressure setpoint measured in the transfer line (in particular at the downstream end).
    In this configuration, the pump 5 may be at its maximum flow rate (maximum speed), and the pressure ramp is controlled by the expansion valve 15.
    The pressure supplied by pump 5 (like the pressure at the transfer line) increases until the pressure at the end of filling (for example 700 to 850 bar). Where appropriate, the storages 9, 10 can be used in cascade (the valves 11, 12; 25, 14 associated with the storages allowing the switching from one storage to the other).
    The hydrogen supplied by the buffer storage 9, 10 joins the flow coming from the pump 5 after having been expanded in the corresponding valve 15, 16. The valves 7, 8 always control the temperature of the gas supplied.
    The flow rate provided in this second filling phase is greater, for example of the order of 25-45 g / s with a peak of up to 60g / s for example.
    With the flow of hot gas supplied by the storage or storage 9, 10 as variable and large buffer, the ratio between the cold gas and the hot gas supplied by the pump 5 is greater than when filling begins. This ratio can vary for example between 30% and 100% depending on the total filling flow.
    When the filling is finished, the pump 5 can be used to fill the storage (s) 9, 10 to their nominal pressure. All the pumped hydrogen can be reheated to storage pressure (400-500 bar for medium pressure buffer storage and 700-1000 bar for high pressure buffer storage).
    In some cases the filling requires only a low flow rate, low enough to be supplied completely by the pump 5 (small tanks with a capacity of less than 4 kg of hydrogen for example). A low-flow filling can also be provided when the ambient temperature is (very) high, for example above 30 or 40 ° C.
    In this case, the expansion valve 15, 16 can remain closed during filling. The pressure ramp can be completely controlled by the speed of the pump 5. The cold flow / hot flow ratio is regulated by the corresponding valves 7, 8 and can be varied for example between 30% and 50% except for cooling the lines as previously described.
    In the case of a large flow rate required for filling large tanks 22 (such as bus tanks storing more than 10 kg of hydrogen), the required flow rate and the required cooling power are relatively large. Such rapid filling is always possible by providing a large filling rate at a transfer line. This can be achieved by using two pumps 5 and controlling the appropriate valves and in particular by opening the valve 18 of the connection pipe 17.
    This arrangement therefore makes it possible to double the capacity of a transfer line and to confer flexibility of use to station 1.
    As mentioned above, the arrangement also allows efficient cooling of the transfer lines.
    In fact, after an extended standby time, the transfer line or lines may heat up. Cooling can be a problem on prior art stations.
    Depending on the proposed architecture, transfer lines can be easily cooled in several ways.
    For example, the line can be cooled according to a so-called “direct” cooling with the cold fluid transferred to the reservoir 22 at the very start of filling. Indeed, at the start of filling, there may be a tolerance time window (often of the order of 30 seconds) during which the reservoir 22 can be filled with a gas that is not sufficiently cooled (above the target temperature). If the transfer line is sufficiently short (for example less than thirty or twenty meters), the cryogenic hydrogen at the outlet of the pump 5 can be sent directly to the tank 22 after having cooled the line during the tolerance window.
    The temperature control of the line temperature can be carried out by a correction of the open loop type (“feedforward”) or “in cascade” according to the measured temperature 21 of the line (for example the temperature of the gas in the line ). That is to say that the opening instructions of the valves 7, 8 in particular are controlled or forced to the value of the temperature measured downstream.
    According to another possible cooling mode (called "cold purge"), the line can be cooled by a dedicated cold gas flow which is not used to fill the tank 22.
    Indeed, for longer transfer lines, "direct cooling" may prove to be insufficient. It can then be considered adding a purge line. Thus, before filling the reservoir 22, the line can be purged by cold hydrogen supplied by the pump 5 and returned to a storage 9, 10 buffer by a purge line (not shown for the sake of simplification).
    This purging phase can be carried out as soon as the tank is connected to the downstream end of the transfer line and while the user is handling an interface before actual filling. This can even be done upstream by detecting the arrival of a customer / user / vehicle. This purge phase may require a few tens of seconds depending on the length of the lines and the ambient temperature.
    权利要求:
    Claims (16)
    [1" id="c-fr-0001]
    1. Device for filling pressurized gas tanks, especially pressurized hydrogen tanks for vehicles, the device comprising a source (2) of liquefied gas, a transfer circuit (3) comprising two parallel transfer lines each having an upstream end (3) connected to the source (2) of liquefied gas, each transfer line comprising a downstream end (4) intended to be removably connected with a reservoir (22) to be filled, each of the two transfer lines comprising: a pump (5), a member (6) for vaporizing the pumped fluid, a branch (13) bypassing the member (6) for vaporization and a set of distribution valve (s) (7, 8) configured to control the flow of pumped fluid and distributed between the spraying member (6) and the branch (13) bypass, the device (1) further comprising a buffer storage unit (s) (9, 10) connected (s) parallel to each of the two lines transfer via a set of valve (s) (11 to 16).
    [2" id="c-fr-0002]
    2. Device according to claim 1, characterized in that the storage assembly (s) buffer (9, 10) is connected to each transfer line between the member (6) of vaporization and the mixing point between the fluid having passed through the vaporization member (6) and the fluid having passed through the branch (13).
    [3" id="c-fr-0003]
    3. Device according to claim 1 or 2, characterized in that the storage assembly (s) buffer (9, 10) is connected to each transfer line via a respective expansion valve (15, 16).
    [4" id="c-fr-0004]
    4. Device according to any one of claims 1 to 3, characterized in that the valve assembly (s) (7, 8) for distributing each transfer line comprises a first distribution valve (7) located downstream of the spraying member (6) and upstream of the point of mixing with the fluid passing through the branch (13) bypass, the distribution valve assembly (s) (7, 8) comprising second valve (8) distribution in the branch (13) bypass.
    [5" id="c-fr-0005]
    5. Device according to any one of claims 1 to 4, characterized in that the buffer storage assembly (s) (9, 10) comprises two or more of two buffer storage connected in parallel to each transfer line, each buffer storage (9, 10) being connected to each transfer line via a respective isolation valve (11, 12).
    [6" id="c-fr-0006]
    6. Device according to any one of claims 1 to 5, characterized in that the transfer circuit (3) comprises a connection pipe (17) connecting the two transfer lines at the outputs of the two pumps (5), said connection pipe (17) comprising an isolation valve (18).
    [7" id="c-fr-0007]
    7. Device according to any one of claims 1 to 6, characterized in that the two transfer lines comprise at least one portion (19) thermally insulated.
    [8" id="c-fr-0008]
    8. Device according to any one of claims 1 to 7, characterized in that the two transfer lines comprise at least one pressure sensor (20) and / or at least one temperature sensor (21) measuring the pressure, respectively the temperature, in particular near the downstream end (4).
    [9" id="c-fr-0009]
    9. Method for filling at least one pressurized gas tank with a determined gas flow rate at a determined temperature to establish a determined filling ramp in the tank, in which the method uses a filling device in accordance with one any of claims 1 to 8.
    [10" id="c-fr-0010]
    10. Filling method according to claim 9, characterized in that the gas flow rate is variable and modified over time.
    [11" id="c-fr-0011]
    11 .Filling process according to claim 9 or 10, characterized in that, during at least part of the filling, in particular when the determined gas flow rate is greater than the maximum flow rate of the pump (5), the gas flow rate transferred into the tank is the sum of a part of the gas flow supplied by the pump (5) and distributed between the member (6) of vaporization and the branch (13) bypass, and, on the other hand, an additional gas flow supplied by the buffer storage unit (s) (9, 10).
    [12" id="c-fr-0012]
    12. Process according to any one of claims 9 to 11, characterized in that, during at least part of the filling, in particular when the determined gas flow is less than or equal to the maximum flow of the pump (5), the gas flow transferred into the tank consists only of the gas flow supplied by the pump (5) and distributed between the vaporization member (6) and the branch (13) bypass.
    [13" id="c-fr-0013]
    13. Method according to any one of claims 9 to 12, characterized in that it comprises a step of filling a reservoir with a gas flow comprising the sum of the gas flows supplied by the pumps (5) of two transfer lines via the transfer of a gas flow from one transfer line to the other transfer line.
    [14" id="c-fr-0014]
    14. Method according to any one of claims 9 to 13, characterized in that it comprises, before or at the start of filling of a reservoir (22), a step of cooling said transfer line comprising a transfer of gas at a determined temperature controlled by controlling the relative distribution between the relatively hot gas passing through the vaporization member (6) and the relatively cold gas passing through the branch (13) and possibly the quantity of relatively hot gas coming from the buffer storage unit (s) (9, 10).
    [15" id="c-fr-0015]
    15. The method of claim 14, characterized in that the step of cooling said transfer line is carried out by controlling the opening of the distribution valves between the member (6) of vaporization and the branch (13) bypass and a possible additional gas flow rate supplied by the buffer storage unit (s) (9, 10) according to an “open loop (“ feedforward ”) type control and / or according to a temperature-based control loop measured at the transfer line.
    [16" id="c-fr-0016]
    16. Method according to either of claims 14 or 15, characterized in that the step of cooling said transfer line comprises a step of purging towards the outside or towards a member for recovering the gas transferred at a determined temperature. controlled in the transfer line to be cooled.
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    同族专利:
    公开号 | 公开日
    DK3628911T3|2021-06-21|
    EP3628911A1|2020-04-01|
    CN110939856A|2020-03-31|
    US20220017358A1|2022-01-20|
    US11155459B2|2021-10-26|
    FR3086367B1|2020-09-11|
    JP2020051619A|2020-04-02|
    US20200095113A1|2020-03-26|
    EP3628911B1|2021-03-31|
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    FR3086367B1|2018-09-25|2020-09-11|Air Liquide|DEVICE AND METHOD FOR FILLING PRESSURIZED GAS TANKS|FR3086367B1|2018-09-25|2020-09-11|Air Liquide|DEVICE AND METHOD FOR FILLING PRESSURIZED GAS TANKS|
    FR3088701B1|2018-11-15|2020-10-23|Air Liquide|INSTALLATION AND METHOD OF FILLING PRESSURIZED GAS TANKS|
    法律状态:
    2019-09-26| PLFP| Fee payment|Year of fee payment: 2 |
    2020-03-27| PLSC| Publication of the preliminary search report|Effective date: 20200327 |
    2020-09-14| PLFP| Fee payment|Year of fee payment: 3 |
    2021-09-21| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1858700A|FR3086367B1|2018-09-25|2018-09-25|DEVICE AND METHOD FOR FILLING PRESSURIZED GAS TANKS|
    FR1858700|2018-09-25|FR1858700A| FR3086367B1|2018-09-25|2018-09-25|DEVICE AND METHOD FOR FILLING PRESSURIZED GAS TANKS|
    DK19186415.6T| DK3628911T3|2018-09-25|2019-07-16|DEVICE AND PROCEDURE FOR FILLING GAS TANKS UNDER PRESSURE|
    EP19186415.6A| EP3628911B1|2018-09-25|2019-07-16|Device and method for filling pressurised gas tanks|
    CN201910869642.8A| CN110939856A|2018-09-25|2019-09-16|Device and method for filling a pressurized gas tank|
    JP2019169196A| JP2020051619A|2018-09-25|2019-09-18|Device and method for filling pressurized gas tanks|
    US16/580,730| US11155459B2|2018-09-25|2019-09-24|Device and method for filling pressurized gas tanks|
    US17/488,605| US20220017358A1|2018-09-25|2021-09-29|Device and method for filling pressurized gas tanks|
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