• 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:
    A fluid supply device comprising a reservoir (2) for storing gaseous fuel at a cryogenic temperature in the form of a liquid-gas mixture, a cryogenic pump (3), the pump (3) comprising an inlet (4) suction nozzle connected to the lower part of the tank (2) via a suction line (5), a first high-pressure outlet (6) intended to supply fluid under pressure to a user and a second outlet (7) for degassing connected to the upper part of the tank (2) via a return pipe (9), the device (1) being characterized in that it comprises a storage (8) cryogenic buffer, a first pipe (10) connecting the lower part storage tank (8) to the tank (2) and a second pipe (11) connecting the upper part of the tank (2) to the buffer storage (8) and in that the device comprises a body (12) for liquefying the gas in storage (8) buffer
    公开号:FR3022233A1
    申请号:FR1455321
    申请日:2014-06-12
    公开日:2015-12-18
    发明作者:Patrick Sanglan；Martin Staempflin
    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 device and a method for supplying fluid. The invention more particularly relates to a fluid supply device comprising a source reservoir for storing gaseous fuel at a cryogenic temperature in the form of a liquid-gas mixture, a cryogenic pump, the pump comprising a suction inlet connected to the lower part of the tank via a suction line, a first high pressure outlet for supplying fluid under pressure to a user and a second degassing outlet connected to the upper part of the tank via a return line. The invention relates to a device for supplying fluid under pressure (liquid or gas) from a reservoir of liquid stored at a cryogenic temperature. To obtain gas under pressure, the pumped liquid can be vaporized in a vaporizer.
    [0002] The high-pressure cryogenic liquid pumping installations comprising a pump for withdrawing and compressing cryogenic liquid from a vacuum-insulated tank are confronted with the management of the boil-off gases generated. These vaporization gases are generated by the reservoir, by the pump and its connection pipes with the reservoir, by the operating cycles of the pump, particularly during the cold-start phases. All these gases generated are in principle returned to the reservoir, ideally in the liquid phase by means of a thermo-siphon device to be recondensed or else in the gas phase when the fluids used make it difficult or impossible to use the thermosyphon. This is often the case with low density and highly volatile fluids such as hydrogen. The quantities of gas generated can be very large resulting in nuisance pressure surges of the tank and releases of hydrogen to the atmosphere. Another consequence of these gas flows returned to the reservoir is an increase in the pressure in the reservoir but also the temperature of the fluid with the consequence of possible losses of NPSH at the pump inlet ("NPSH" = "Net Positive Suction Head In English, ie "absolute net load height" or "input head loss").
    [0003] These phenomena must be taken into account especially in the case of pumping low molecular weight fluids (hydrogen, helium). Pumping a gas in liquid form is generally more advantageous in terms of energy efficiency than compressing in gaseous form.
    [0004] However, the pumping of liquid hydrogen is relatively delicate. Due to its low density and volatility it is relatively difficult to maintain it in liquid form into the pump. This can cause cavitation phenomena and gas can be generated in the pump that has to be returned to the tank. Cryogenic liquid hydrogen compression is of some interest today for future applications of hydrogen energy. This phase of emergence of a market leads to the use of materials and products from other applications and markets and whose specifications and performance are not very compatible with the targeted demonstration projects. For example, the cold holding time of the pump should be limited to two hours per operation, requiring heating / cooling cycles generating large quantities of gas. For high capacity hydrogen compressor stations, the amount of gas generated can be significant and may justify the investment of an additional compressor station to compress the produced gas and store it in a recovery tank. This is however unfavorable to the economic balance of the installation. The pump is supplied with liquid by reservoir via a suction line and kept at a low temperature during operation. The product gas is returned to the tank via a degassing outlet of the pump. This amount of gas produced depends on the thermal performance of the installation and the pump and the cycles of operation. When the pump is stopped (ambient temperature), the pump and the relevant lines of the circuit for its supply are hot (ambient temperature). The vacuum tank vaporizes liquid due to heat inputs which causes the pressure in the tank to rise. Before using the system, the circuit and the pump must be cooled. This is done by pumping liquid which is returned to the tank via the degassing outlet of the pump. This also helps to increase the pressure in the tank. There are two main pumping architectures for cryogenic fluids and in particular for liquid hydrogen. In a first so-called "standard" architecture, the pump draws liquid from the lower part of the tank and the degassing outlet of the pump is connected to the upper part of the tank (gaseous phase). When the tank is full this can generate significant pressure increases requiring outgassing to the outside. In a second so-called "thermosiphon" architecture, the degassing outlet is connected to the lower part of the tank (liquid phase). The hot gas or liquid is returned to the liquid phase where it is re-liquefied or cooled. This device with thermosiphon limits the rise in pressure of the tank. The pump is the hot source of the thermo-siphon. For a nominal operation, a thermosiphon requires the respect of a number of design and installation provisions to control the pressure drops, to have a gravimetric height necessary and sufficient for the priming and its operation as well as to make sure of the availability of the source of the heat. For this purpose, there may be a contradiction between the heat inputs on the pump and the supply piping that we want the lowest possible to minimize the generation of gas and the need for heat required to ensure satisfactory operation thermosyphon. The heat introduced into the liquid portion reduces the density of the liquid sufficiently to generate a "thermo-siphon" type liquid flow from the suction to the pump's degassing outlet even when the pump is not pumping. For proper operation, the difference in height between the suction point of the pump and the point of return into the tank must be respected. This thermo-siphon architecture works with difficulty with light fluids such as hydrogen. It is thus practically impossible to form a natural circulation of thermo-siphon type in a pump with hydrogen, in particular when the reservoir is almost empty. An object of the present invention is to overcome all or part of the disadvantages of the prior art noted above.
    [0005] 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 it comprises a cryogenic storage buffer, a first conduit connecting the lower part of the buffer storage tank and a second pipe connecting the upper part of the tank buffer storage and in that the device comprises a gas liquefaction member in the buffer storage. Furthermore, embodiments of the invention may include one or more of the following features: the second conduit comprises a first end connected to the upper portion of the buffer storage and a second end connected to the return conduit; that is, the buffer storage is connected to the reservoir and to the second pump outlet via the return line, the buffer storage comprises at least one heater for selectively heating the fluid contained in the buffer storage in order to to increase the pressure within the latter, the buffer storage comprises two heaters arranged respectively in the upper and lower part of the storage, at least one of: the suction line, the return line, the first conduit, the second conduit comprises at least one valve 20 including at least one pilot valve, - the device comprises a storage acquisition member and data processing connected to the at least one valve and to the liquefaction unit, - the storage acquisition and data processing unit is also connected to the heater or heaters, the storage acquisition device and with the data processing being configured to drive the liquefying member, the at least one heater and the at least one valve for liquefying, in buffer storage, at least a portion of the vaporized gas in the device; acquisition of storage and data processing is configured to drive the liquefaction unit, the at least one heater and the at least one valve to maintain the pressure in the tank below a determined pressure threshold; comprises at least one of: a pressure sensor in the tank, a temperature sensor in the tank, a pressure sensor in the buffer storage, a temperature sensor in the buffer storage, the at least one with the sensor being connected to the data storage and processing acquisition element, the pump has a determined input load loss (NPSH), the data storage and processing acquisition member being configured to driving the liquefying member, the at least one heater and the at least one valve to maintain the pressure in the reservoir or in the suction line at least equal to the saturation pressure of the cryogenic fluid increased by the loss (NPSH) of the pump inlet load and possibly also the value of the pressure drops due to the pipework of the suction line connecting the tank to the pump, - the end of the return pipe comprises a distribution nozzle with multiple jets, the liquefaction member comprises a cryo-cooler.
    [0006] The invention also relates to a method for supplying fluid using a fluid supply device according to any one of the above or hereafter characteristics including, during a period of stopping the pump and when the pressure in the reservoir reaches a determined threshold, a step of transfer of vaporized gas from the reservoir to the buffer storage, a liquefaction step, in the buffer storage, of the gas transferred via the liquefying member. According to other possible particularities: - when the liquid level in the buffer storage reaches a certain limit level, liquid is transferred from the buffer storage to the reservoir, - at least one transfer of fluid between the buffer storage and the reservoir (in one or both directions) is achieved by the establishment of a pressure differential between the pressures in the buffer storage and the reservoir and in fluidic connection these (valve opening (s), - the method comprises a step of cooling the pump by transferring liquid from the buffer storage to the reservoir via the second pump outlet, the pump inlet and the suction pipe; the method comprises a step of starting and cooling the pump by transferring liquid from the reservoir to the buffer storage via the suction line, the pump inlet and an outlet of the pump, at least a portion of the vaporized gas in the buffer storage being liquefied by the liquefying member, - the method comprises a pumping step in which, when the pressure in the buffer storage is lower than the pressure in the tank, liquid is pumped into the tank via the inlet and the second outlet of the pump is fluidly connected with the buffer storage; the method comprises a step of pumping liquid into the reservoir during which at least a portion of the vaporized fluid in the pump is transferred from the second high pressure outlet of the the pump to the buffer storage and liquefied by the liquefying organ. The invention may also relate to any alternative device or method comprising any combination of the above or below features. Other features and advantages will become apparent upon reading the following description, with reference to the single figure which shows a schematic and partial view illustrating the structure and operation of a fluid supply device according to an example. embodiment of the invention. The fluid supply device comprises a storage tank 2 for storing gaseous fuel at a cryogenic temperature in the form of a liquid-gas mixture. The reservoir 2 is preferably of the double wall type with an insulation gap between the two walls. The device comprises a cryogenic pump 3 provided with a suction inlet 4 connected to the lower part of the tank 2 via a suction line. The pump 3 includes a first high pressure outlet 6 for supplying fluid of pressurized fluid to a user and a second degassing outlet 7. The outgassing outlet 7 is connected to the upper part of the tank 2 via a return line 9. For example, the end of the return line 9 comprises a multi-jet distribution nozzle 17 at the top of the tank 2. The device 1 further comprises a separate cryogenic storage buffer 8 and a first pipe 10 connecting the lower part. storage buffer 8 to the reservoir 2, preferably to the lower part of the reservoir 2. The device 1 comprises a second pipe 11 connecting the upper part of the reservoir 2 to the buffer storage 8, preferably to the upper part of the buffer storage 8. In addition, the buffer storage 8 comprises a member 12 for liquefying the gas in the buffer storage 8, for example a cryo-cooler. The storage buffer 8 preferably comprises at least one heater and even more preferably two 13, 14 to selectively heat the fluid contained in the buffer storage 8 in order to increase the pressure within the latter. The two heaters are placed for example respectively in the upper and lower portions of the buffer storage 8. As illustrated, the second conduit 11 may include a first end connected to the upper portion of the buffer storage 8 and a second end connected to the return conduit 9. That is, the buffer storage 8 is connected to the tank 2 and the second outlet 7 of the pump 3 via the return line 9. As illustrated schematically, all or part of the pipes and lines may comprise ends with removable connection, for example according to a zone 16 of connection between on the one hand the parts connected to the tank 2 and, on the other hand, the parts connected to the storage The pump 3 and the buffer storage 8 are ideally arranged to minimize the length of the connection pipes 10 and 11 and the additional and parasitic pressure drops and heat inputs. The pump 3 is for example a standard pump available on the market. In the future, it is possible to use a pump 3 developed specifically for this application and whose design will be immersed in the buffer tank 8 eliminating the need for connection pipes. At least one of: the suction line 5, the return line 9, the first line 10, the second line 11 comprises at least one valve 15, 19, 110, 111, 211 including at least one pilot valve. For example, the suction line 5 comprises one or two valves 15. The first conduit 10 may comprise one or more valves 110. The second conduit 11 may comprise a valve 111. The degassing conduit 9 may comprise one or two valves 19 Similarly, the outgassing outlet 7 of the pump 3 may comprise a valve 211 upstream of the junction between the return pipe 9 and the second pipe 11.
    [0007] Preferably, the device also comprises a data storage and data acquisition member 130 connected (wirelessly and / or by wire (s) to the valves 15, 19, 110, 111, 211 and to the liquefaction member 12. The storage acquisition and data processing member 130 may also be connected to the heater (s) 13, 14. The storage and data processing member 130 may comprise a microprocessor , a computer, or any other device suitable for being shaped (programmed) for controlling the liquefying member 12, the at least one heater 13, 14 and the valves 15, 19, 110, 111, 211.
    [0008] In particular, the device may be configured to control the liquefaction, in buffer storage, of at least a portion of the vaporized gas in the device (i.e. the gas produced in the reservoir or the pump or the circuit ). Similarly, the storage acquisition and data processing member 130 may be configured to control the liquefaction member 12, the at least one heater 13, 14 and the valve or valves 15, 19, 110, 111, 211 to maintain the pressure in the tank 2 below a determined pressure threshold. Advantageously, the device may comprise at least one of: a pressure sensor 22 in the tank 2, a temperature sensor in the tank 2, a pressure sensor 18 in the buffer storage 8, a temperature sensor in the storing buffer 8, said at least one sensor 18, 22 preferably being connected to the storage acquisition and data processing member 130. The pump 3 has a known and determined pressure drop (NPSH). The storage acquisition and data processing member 130 can in particular be configured to control the liquefaction member 12, the heater (s) 13, 14 and the valve (s) 15, 19, 110, 111, 211 for maintaining the pressure in the reservoir 2 or in the suction line at least equal to the saturation pressure of the cryogenic fluid increased by the inlet pressure drop of the pump 3 (NPSH) and possibly also increased by the value pressure drops due to the pipework of the suction line connecting the tank 1 to the pump. The structure and operation of the device according to the invention have many advantages over known solutions. For example, and as described more precisely below, the device is connected to the gas phase of the tank 2 via the degassing line 9 and allows to re-liquefy in the buffer storage 8 the heat inputs of the tank 2 or any other additional heat input and thus reduce / control the pressure in the tank 2. The sizing of the buffer storage 8 and the liquefaction member 12 12 are determined according to the thermal performance of the pump 3 and its connecting elements with the tank 2 but also its cycles of use. For example, during continuous operation, the liquefaction member 12 and the buffer tank 8 may be sized to continuously re-liquefy the gases generated by the pump 3 and the pipes and avoid returning these gases to the reservoir 2. During discontinuous operation, the generated gases are systematically returned to the tank 2 waiting to be reliquefied when the pump 3 is stopped. This operating mode makes it possible to optimize the size of the liquefier unit 12 and the buffer 8. One of the major advantages of this device is that it remains functional whatever the level of liquid in the tank 2 and, above all, optimizes the conditions. 3. The device makes it possible to control the pressure in the tank 2 while avoiding evacuation to the atmosphere or the use of a compressor and a recovery tank. The architecture also allows optimal operation of the pump and in particular a cooling and a liquid supply with a sufficient pressure level (NPSH) to prevent or limit any risk of cavitation regardless of the level in the tank 2.
    [0009] According to an advantageous characteristic, the thermosiphon phenomenon can be obtained by a management of the pressure in the circuit (instead of the effects of gravity and temperature). Examples of various modes of operation will be described below.
    [0010] Standby Installation When the device is inactive ("Off" at full standstill), pump 3 is inactive and all valves are preferably closed. The pressure within the tank 2 increases as the heat inputs. After the valves 19, 111 have been opened in the return line and in the second line 11, the buffer storage 8 is connected to the gaseous phase of the tank 2. The liquefaction member 12 is able to suck the gas from the tank 2 in order to liquefy it in the buffer storage 8. Buffer storage 8 thus accumulates liquid, the amount of which can be measured by a level and / or pressure sensor 18. This makes it possible to reduce the pressure in the tank 2. When the buffer storage 8 is full, the valve 11 in the second pipe 11 can be closed and a heater 13, 14 of the buffer storage 8 can be activated if necessary to increase the pressure in the storage buffer 8 at a pressure greater than the pressure in the reservoir 2. In this way, liquid can be returned to the tank 2 by opening the valve 110 in the first pipe 10. Alternatively or cumulatively, liquid can be returned in the upper part of the tank 2 via the second pipe 11 and the return pipe 9 by opening the valves 111, 19 concerned.
    [0011] This transfer of liquid is interrupted when the pressure becomes the same between the tank 2 and the buffer storage 8. This process can be repeated as necessary, especially in order to maintain a level of liquid and cold in the tank 2 in order to a future pumping operation. Cooling of the pump.
    [0012] Before a pumping operation, the buffer storage 8 is preferably solid and at a pressure greater than the pressure in the tank 2 and all the valves are closed. By opening the valves 111, 211, 15, in the second line and the suction line, cold liquid can be returned to the tank through the pump 3 to cool it. The liquid returns to the liquid part where the gas is reliqued. The pressure increase is then relatively low. When the pump 3 is sufficiently cooled (measured for example by one or more temperature sensors), the pump 3 is ready to be used. In the case where the pump 3 is not adapted to receive a flow in the opposite direction, a liquid flow can instead be taken from the tank 2 to the storage buffer 8 via the pump 3. This heated fluid can be again liquefied in storage 8 buffer. For this operating mode, the pressure in the tank 2 must be higher than the pressure in the buffer storage 8.
    [0013] This can be achieved by increasing the pressure in the tank 2 (via a heater for example) and / or by decreasing the pressure in the buffer storage 8 (via the liquefying member 12). If the pump 3 has poor performance, the liquefying member 12 and the buffer storage 8 may be insufficiently sized to liquefy all the gas produced. In this case, the gas can be returned to the tank 2 by increasing its pressure for subsequent re-liquefaction (see above). In an extreme case where the pump 3 vaporizes 3kg of hydrogen for its cooling, a buffer storage of 400 liters and a cryo-cooler of power 100 Watt at 20 ° C can be enough to liquefy all the gas produced during the setting cold of the pump 3. The cooling mode of the pump 3 can be adapted depending in particular on the level of liquid in the tank. Pump active or in pause mode (cold).
    [0014] When the pump 3 is at a good temperature, it can pump the liquid. The pump 3 can be maintained at the correct temperature by directing the excess pumped liquid to the buffer storage (via the second conduit 11). Since the liquefaction member 12 has a cooling power greater than the heat losses in the pump 3, the gas vaporized during the pumping can be completely liquefied in the buffer storage 8. This also applies in the case where the pump 3 is paused but cold. The signals supplied by the pressure and / or temperature sensor (s) make it possible, if necessary, to control the degree of opening of the valve 211 at the degassing outlet of the pump 3. When the buffer storage 8 is full, its emptying in the tank 2 can be carried out according to the process described above. In a conventional installation, when the pump is fed with insufficiently subcooled liquid, as is usually the case at the end of tank emptying or extended stand-by of the installation, the pump 3 can be defused (risk cavitation) because the liquid is not sufficiently undercooled at the inlet of the pump 3. This can have damaging consequences for the equipment. Generally, the priming of the pump is recovered by releasing the venting outlet 7 to the atmosphere. The device makes it possible to avoid this loss of gas. Firstly, during the inactive phases of the installation, the device makes it possible to lower / control the pressure in the tank 2 and therefore the temperature of the liquid so as to guarantee the subcooling of the liquid at the inlet of the 3. Alternatively, the priming of the pump 3 can be recovered by degassing the pump 3 in the buffer storage 8 through the valves 111 and 211 as in the case of cooling described above, having taken care to lower the pressure in buffer 8 before starting the installation. This can be done without the need to increase the pressure in the tank 2. This can be repeated as long as the pressure in the buffer storage remains lower than the pressure in the reservoir 2. During these operations the liquefaction member 12 is in operation and re-liquefies the gas. Once the buffer storage 8 full, it is drained to the tank 2 through the line 10 and the valve 110 so as to be operational to deal with any possibility of malfunction of the pump 3 which would require its degassing.
    权利要求:
    Claims (15)
    [0001]
    REVENDICATIONS1. A fluid supply device comprising a reservoir (2) for storing gaseous fuel at a cryogenic temperature in the form of a liquid-gas mixture, a cryogenic pump (3), the pump (3) comprising an inlet (4) suction nozzle connected to the lower part of the tank (2) via a suction line (5), a first high-pressure outlet (6) intended to supply fluid under pressure to a user and a second outlet (7) for degassing connected to the upper part of the tank (2) via a return pipe (9), the device (1) being characterized in that it comprises a storage (8) cryogenic buffer, a first pipe (10) connecting the lower part storage tank (8) to the tank (2) and a second pipe (11) connecting the upper part of the tank (2) to the buffer storage (8) and in that the device comprises a body (12) for liquefying the gas in storage (8) buffer.
    [0002]
    2. Device according to claim 1, characterized in that the second pipe (11) comprises a first end connected to the upper part of the buffer storage (8) and a second end connected to the return pipe (9) is that is, the buffer storage (8) is connected to the reservoir (2) and to the second outlet (7) of the pump (3) via the return line (9).
    [0003]
    3. Device according to claim 1 or 2, characterized in that the storage (8) buffer comprises at least one heater (13, 14) for selectively heating the fluid contained in the storage (8) buffer to increase the pressure within the latter.
    [0004]
    4. Device according to claim 3, characterized in that the storage (8) buffer comprises two heaters (13, 14) disposed respectively in the upper and lower part of the storage.
    [0005]
    5. Device according to any one of claims 1 to 4, characterized in that at least one of: the suction line (5), the return pipe (9), the first pipe (10), the second conduit (11) comprises at least one valve (15, 19, 110, 111, 211) including at least one pilot valve.
    [0006]
    6. Device according to claim 5, characterized in that it comprises a member (130) for acquisition of storage and data processing connected to the at least one valve (15, 19, 110, 111, 211) and to the liquefaction member (12).
    [0007]
    7. Device according to claim 4 or 5 in combination with claim 6, characterized in that the storage acquisition and data processing member (130) is also connected to the heater or heaters (13, 14). storage and data processing means (130) being configured to drive the liquefaction member (12), the at least one heater (13, 14) and the at least one valve (15, 19, 110). , 111, 211) for liquefying, in buffer storage (8), at least a portion of the vaporized gas in the device.
    [0008]
    8. Device according to claim 7, characterized in that the member (130) for storage acquisition and data processing is configured to control the liquefaction member (12), the at least one heater (13, 14). ) and the at least one valve (15, 19, 110, 111, 211) for maintaining the pressure in the reservoir (2) below a determined pressure threshold.
    [0009]
    9. Device according to any one of claims 6 to 8, characterized in that it comprises at least one of: a sensor (22) pressure in the tank (2) a temperature sensor in the tank (2) ), a pressure sensor (18) in the buffer storage (8), a temperature sensor in the buffer storage (8), the at least one sensor (18, 22) being connected to the device (130) of acquisition of storage and data processing.
    [0010]
    10. Device according to any one of claims 7 to 9, characterized in that the pump (3) has a loss (NPSH) determined input load, the body (130) acquisition of storage and processing configured to drive the liquefying member (12), the at least one heater (13, 14) and the at least one valve (15, 19, 110, 111, 211) for maintaining the pressure in the reservoir ( 2) or in the suction line (5) at least equal to the saturation pressure of the cryogenic fluid increased by the inlet load loss (NPSH) of the pump (3) and possibly also increased by the value of the losses to the piping of the suction line (5) connecting the reservoir (1) to the pump (3).
    [0011]
    11. Fluid supply method using a fluid supply device according to any one of claims 1 to 10, characterized in that it comprises, during a period of stopping the pump (3) and when the pressure in the reservoir (2) reaches a determined threshold, a vaporized gas transfer step from the reservoir (2) to the buffer storage (8), a liquefaction step, in the buffer storage (8), the gas transferred via the organ (12) liquefaction.
    [0012]
    12. The method according to claim 11, characterized in that, when the liquid level in the buffer storage (8) reaches a certain limit level, liquid is transferred from the buffer storage (8) to the reservoir (2).
    [0013]
    13. The method of claim 12, characterized in that at least one fluid transfer between the buffer storage (8) and the reservoir (2) (in one or both directions) is performed by the establishment of a pressure differential between the pressures in the buffer storage (8) and the reservoir (2) and in fluidic connection with the latter (valve opening (s).
    [0014]
    14. Method according to any one of claims 11 to 13, characterized in that it comprises a step of cooling the pump (3) by transfer of liquid buffer storage (8) to the reservoir (2) via the second outlet (7) of the pump, the inlet (4) of the pump (3) and the suction pipe (5).
    [0015]
    15.Procédé according to any one of claims 11 to 14, characterized in that it comprises a step of starting and cooling the pump (3) by transfer of liquid from the tank (2) to the storage (8). ) buffer via the suction line (5), the inlet (4) of the pump and an outlet (7) of the pump (3), at least a portion of the vaporized gas in the buffer storage (8) being liquefied by the liquefaction organ (12).
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    同族专利:
    公开号 | 公开日
    JP2016028206A|2016-02-25|
    US20150362128A1|2015-12-17|
    FR3022233B1|2019-06-07|
    JP6567333B2|2019-08-28|
    CN105275778A|2016-01-27|
    EP2977670A1|2016-01-27|
    EP2977670B1|2019-07-03|
    CN105275778B|2019-11-01|
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    法律状态:
    2015-06-19| PLFP| Fee payment|Year of fee payment: 2 |
    2015-12-18| PLSC| Search report ready|Effective date: 20151218 |
    2016-06-27| PLFP| Fee payment|Year of fee payment: 3 |
    2017-06-21| PLFP| Fee payment|Year of fee payment: 4 |
    2018-06-20| PLFP| Fee payment|Year of fee payment: 5 |
    2020-06-19| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1455321A|FR3022233B1|2014-06-12|2014-06-12|DEVICE AND METHOD FOR SUPPLYING FLUID|
    FR1455321|2014-06-12|FR1455321A| FR3022233B1|2014-06-12|2014-06-12|DEVICE AND METHOD FOR SUPPLYING FLUID|
    EP15162707.2A| EP2977670B1|2014-06-12|2015-04-08|Device and method for supplying fluid|
    CN201510261277.4A| CN105275778B|2014-06-12|2015-05-21|Device and method for supply fluid|
    US14/734,973| US20150362128A1|2014-06-12|2015-06-09|Device and method for supplying fluid|
    JP2015118616A| JP6567333B2|2014-06-12|2015-06-11|Apparatus and method for supplying fluid|
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