Gas transport trailer, gas refuelling system and related refuelling method

Abstract

The invention relates to a gas transport trailer (2) for transporting gaseous or liquid gas, comprising at least one storage section (4) with at least one receiving container (6) for receiving a gas to be transported, a main inlet / outlet line (12) which is fluidly connected to the receiving container (6), and a connection unit (14) which is fluidly connected to the main inlet / outlet line (12) and is configured to be fluidly coupled to a connection of a gas transfer unit (102) for loading or unloading the gas transport trailer (2). The invention further relates to a gas refueling system (300) and a method (400).According to the invention, it is proposed that the main supply / outlet (12) is a first main supply / outlet (12) and the gas transport trailer (2) has a second main supply / outlet (12') which is fluidly connected to the receiving container (6) and a second connection unit (14') which is fluidly connected to the second main supply / outlet (12') and is configured to be fluidly coupled to a second connection of a gas transfer unit (102) for loading or unloading the gas transport trailer (2).

Description

[0001] Gas refueling system and refueling method relating to the invention. The invention relates to a gas refueling system according to claim 1 and a method according to claim 11.

[0002] Such gas transport trailers, also referred to as Multiple-Element Gas Containers (MEGCs) regardless of the gas being transported, are known from the prior art. They are used to transport gases in liquefied or gaseous states, particularly via the road network, for which purpose such a trailer can be coupled to a tractor unit. One gas to be transported is, for example, hydrogen. Such trailers are typically divided into several storage sections, each of which has at least one, and in particular several, receiving tanks for gas. The storage sections are connected to a main inlet / outlet line and can be connected to a gas transfer unit via a connection unit using this main inlet / outlet line.

[0003] In previously known gas transport trailers, the gas stored in the receiving tanks is dispensed from the individual storage sections of the trailer. DK 2020 70432 A1 relates to a gas transport trailer. KR 2007 0037733 A relates to a mobile trailer for transporting gas. EP 3 892 910 A1 relates to a gas refueling system. US 2013 / 240080 A1 relates to a mobile tanker truck. US 2022 / 120383 A1 relates to a device for filling gas tanks.

[0004] A disadvantage of this approach is that only one consumer can be supplied with gas from such a trailer at any given time. If two consumers are to be refueled using such a trailer, simultaneous refueling can only be achieved if the pressure of the received gas is identical. Therefore, varying the refueling parameters between the consumers is not possible.

[0005] Against this background, the invention was based on the objective of further developing a gas transport trailer of the type described above in such a way as to eliminate the disadvantages found in the prior art as far as possible. In particular, a gas transport trailer is to be provided that enables more flexible refueling processes, especially the simultaneous refueling of two or more consumers with different refueling parameters.

[0006] According to the invention, the problem in a gas transport trailer of the type mentioned above is solved by the fact that the main supply / discharge line is a first main supply / discharge line and the gas transport trailer has a second main supply / discharge line which is fluidly connected to the receiving container, and a second connection unit which is fluidly connected to the second main supply / discharge line and is configured to be fluidly coupled to a second connection of a gas transfer unit for loading or unloading the gas transport trailer.

[0007] By providing a second main supply / exhaust line and a second connection unit, which is fluidly connected to the second main supply / exhaust line, it is now possible to connect a consumer to each of the main supply / exhaust lines. Each consumer can be refueled simultaneously and independently of the first trailer, and this can be done with different refueling parameters, such as refueling pressures. In other words, the trailer behaves as if there were two trailers, and the hydrogen contained in the trailer can be distributed individually to the dispensing points.

[0008] According to one embodiment, a third main supply / exhaust line or further main supply / exhaust lines are provided, which are designed in particular analogous to the first and second main supply / exhaust lines.

[0009] According to a preferred embodiment, the gas transport trailer is a hydrogen transport trailer. Preferably, the gas to be stored or transferred within the scope of this application is hydrogen. According to one embodiment, the storage section has a first supply line, which is fluidly connected to the at least one receiving container and the first main inlet / outlet, and a second supply line, which is fluidly connected to the at least one receiving container and the second main inlet / outlet. Preferably, the gas transport trailer has several storage sections, each containing a receiving container that is connected to the main inlets / outlets in the manner described. The supply lines ensure that the receiving container is fluidly connected to the respective main inlet / outlet.

[0010] According to one embodiment, the gas transport trailer has a first valve arrangement configured to block and release fluid flow through the first supply line, and a second valve arrangement configured to block and release fluid flow through the second supply line. The valve arrangements thus allow the transfer of gas from a receiving container through the respective supply lines to the main supply / discharge lines to be controlled. In this way, gas with the desired properties can be supplied to the respective main supply / discharge lines. Overall, this creates the possibility of simultaneously refueling consumers connected to the respective main supply / discharge lines with different refueling parameters. One refueling parameter could be, for example, a refueling pressure.

[0011] According to one embodiment, the valve arrangements can be controlled independently of one another. This accommodates the concept of simultaneous and independent refueling of two consumers directly or indirectly connected to the gas transport trailer. According to another embodiment, the gas transport trailer has a control unit with a data storage device, the control unit being configured to control the first valve arrangement and the second valve arrangement. The control unit can be connected in various ways, for example, to a gas transfer unit and / or a gas dispensing unit. In this way, the transfer or refueling process can be automated. According to another embodiment, the control unit is configured to communicate with a connected gas transfer unit and / or a connected gas dispensing unit, in particular bidirectionally.

[0012] Furthermore preferably, at least one, several or all of the following sensors are connected to the first and / or second main supply / output line: mass flow sensor, temperature sensor, pressure sensor, wherein the sensors are configured to generate a corresponding measurement signal and wherein the sensors are connected to the control unit in a data-conducting manner, in particular via a fieldbus system, wherein the measured values ​​of the sensors are in particular linked to the gas property data set.

[0013] The invention is further developed in that the storage section additionally comprises at least one of the following: a pressure gauge, which is fluidly connected to the receiving vessel, particularly via a lockable manual valve; a pressure transmitter, which is fluidly connected to the receiving vessel, particularly via the lockable manual valve. The pressure gauge is used for direct pressure reading. Furthermore, the lockable manual valve facilitates the replacement of the pressure gauge and pressure transmitter.

[0014] According to a preferred embodiment, the first and / or second main supply / exhaust line further comprises at least one of the following: a controlled valve configured to open the main supply / exhaust line and to close it during a safety shutdown; a manual valve configured to close the main supply / exhaust line manually; a relief valve that is connected to the control unit via data transmission and has a downstream chimney system, wherein the chimney system in particular comprises a throttle downstream of the relief valve and an outlet chimney. The invention is further developed in that the controlled valve and / or the controlled valve are designed as solenoid valves or pneumatic valves. If all controlled valves are designed as solenoid valves, the supply of compressed air or a corresponding compressed air storage system for the entire gas transport trailer can be dispensed with.

[0015] The invention relates to a gas refueling system for supplying gaseous or liquid gas, in particular hydrogen, to a consumer. The invention solves the problem described above with regard to the gas refueling system, which comprises a gas transport trailer for transporting gaseous or liquid gas according to one of the preceding embodiments, a gas transfer unit for transferring gas between a gas supply and / or delivery system and the gas transport trailer, and a gas dispensing unit which is fluidly connected to the gas transfer unit and is configured to dispense gas to a consumer connected to the gas dispensing unit, wherein the gas refueling system is configured to transfer gas from the gas transport trailer to the gas transfer unit and from there to the gas dispensing unit and the consumer.Preferably, the gas dispensing unit is fluidly connected to the first main supply / outlet line of the gas transport trailer and furthermore fluidly connected to the second main supply / outlet line via a separate line. In this way, the gas dispensing unit can simultaneously refuel two connected consumers with different refueling parameters. The gas refueling system utilizes the same advantages and preferred embodiments as the gas transport trailer according to the invention, and vice versa. To avoid repetition, reference is made to the above statements, and their content is hereby incorporated.

[0016] According to one embodiment, the gas dispensing unit has a hydrogen dispensing pump.

[0017] Preferably, the hydrogen dispenser is designed as a dual dispenser and has two refueling couplings. The dual dispenser is characterized by the fact that different consumers can be connected to each of the two refueling couplings, which can be refueled with corresponding refueling parameters. Because the gas dispensing unit can be connected to the two main supply / return lines of a single trailer via two lines, both consumers can be filled independently and simultaneously from a single trailer. Alternatively, the refueling couplings can also be fluidly connected to two trailers. In this case, one trailer can be used for each refueling process. According to one embodiment, the refueling couplings are connected by a line with a valve.This allows filling to take place via the other trailer if one of the connected trailers no longer has sufficient pressure.

[0018] According to an alternative embodiment, the hydrogen dispenser is designed as a simple dispenser, i.e., it has a refueling coupling. According to another embodiment, the gas dispenser has a control unit configured to communicate with a control unit of the gas transfer unit and / or the gas transport trailer, particularly bidirectionally. In other words, all units of the gas refueling system can communicate with each other via corresponding control units. This communication can be wired or wireless. In this way, each of the systems of the gas refueling system can control the other systems. For example, the gas transport trailer can control the hydrogen dispenser and vice versa. Furthermore, the hydrogen dispenser can, in particular, control both the gas transfer unit and the gas transport trailer to coordinate a refueling process.

[0019] The gas dispensing unit has been described above in relation to refueling consumers with gas, particularly hydrogen. However, the gas dispensing unit can also refer to any gas consumer in general. For example, it is conceivable that this could be an industrial customer who uses the gas for various operational processes. Gas can be supplied to this industrial customer from one or more trailers in the manner described above.

[0020] According to one embodiment, the gas transfer unit comprises a main fluid line, a valve arranged in the main fluid line which is configured to selectively release or block a fluid flow through the main fluid line, a first connection unit fluidly connected to the main fluid line for fluidly connecting the gas transfer unit to a mobile gas storage unit, in particular a gas transport trailer, a second connection unit connected to the main fluid line for fluidly connecting the gas transfer unit to a gas supply system, and a control device which is configured to control a transfer process of gas between the mobile gas storage unit and the gas supply system and vice versa by controlling the valve.

[0021] According to one embodiment, the gas transfer unit has at least two gas connections that can be coupled to a single gas transport trailer or several gas transport trailers, and two connecting lines that fluidly connect each of the gas connections to a dispensing point interface and / or a refueling coupling of the gas dispensing unit, in particular wherein the connecting lines are connected via a lockable connecting line. If a trailer according to one of the above embodiments is connected to two gas connections, then two consumers connected to the gas dispensing unit can be refueled independently and simultaneously. Preferably, the separate connecting line has a valve that is configured to lock or unlock the connection through the line.

[0022] According to one embodiment, at least four gas connections are provided on the first connection unit. Preferably, two of the four gas connections can be used together via a connecting line to conduct fluid.

[0023] For example, a first gas connection can be connected to a third gas connection, and a second gas connection to a fourth gas connection.

[0024] According to the invention, the gas transfer unit and the gas dispensing unit are designed as a mobile unit, in particular wherein the mobile unit is designed as a container or has a transportable base frame. This creates a transportable unit consisting of the gas transfer unit, the gas dispensing unit, and the base frame or container. For example, the base frame can have a chassis or be coupled to one in order to use the unit as a transportable filling station. According to one embodiment, the gas transfer unit and the gas dispensing unit are permanently installed on a site and function as a stationary filling station.

[0025] The invention is further developed by assigning a first valve to the first port, which is configured to open or close the first port, and by assigning a second valve to the second port, which is configured to open or close the second port. The valves are controlled by the control unit in such a way that they are only opened when a mobile gas storage tank of the corresponding target operating pressure is connected to the respective port. In this way, the risk of operating errors is further reduced. Only when a suitable mobile gas storage tank with the correct target operating pressure is connected to the respective port provided for this purpose is the loading or unloading of the mobile gas storage tank possible. This increases the overall safety of the system and reduces potential sources of error, thus relieving the operator of some of the burden.

[0026] The valves are preferably designed as pneumatic or magnetic valves. In the case of pneumatic valves, pressure is preferably supplied internally by a compressor or externally by the additional connection of a gas cylinder or an external compressed air compressor.

[0027] Preferably, at least one, several, or all of the following sensors are connected to the main fluid line: mass flow sensor, temperature sensor, pressure sensor, wherein the sensors are configured to generate a corresponding measurement signal. Furthermore, the main fluid line preferably also includes at least one of the following: a controlled valve configured to open the main fluid line and to close it during a safety shutdown; a manual valve configured to close the main fluid line manually; a relief valve that is connected to the control unit for data transmission and has a downstream chimney system, wherein the chimney system particularly includes a throttle downstream of the relief valve and an outlet chimney.

[0028] Preferably, the gas transfer unit further comprises at least one of the following: a compressed air connection, an electrical connection, or an emergency stop switch. The compressed air connection serves to supply compressed air, which is used in particular for actuating valves.

[0029] The invention has been described above with reference to a gas transport trailer and a gas refueling system. In a further aspect, the invention relates to a method for refueling a consumer with gas using a gas refueling system, in particular using a gas refueling system according to one of the preceding claims.

[0030] The invention solves the problem described above with regard to the method according to claim 11, which comprises the steps of: requesting gas of a specific quantity and / or pressure from a gas transport trailer connected to a gas transfer unit by means of a gas dispensing unit; dispensing gas from the gas transport trailer into the gas transfer unit and from the gas transfer unit to the gas dispensing unit and the consumer, wherein the gas from the gas transport trailer is dispensed by cascaded dispensing from storage sections of the gas transport trailer; optionally, terminating the refueling when the consumer has been refueled to pressure equalization and / or a maximum pressure or target pressure of a tank of the consumer has been reached. The method enables particularly demand-oriented refueling of a consumer.

[0031] The process is further developed by requiring the request for gas of a specific quantity and / or pressure in accordance with a refueling protocol.

[0032] According to one embodiment, the gas transport trailer is a gas transport trailer according to one of the preceding embodiments, wherein the first main supply / exhaust line of the gas transport trailer is fluidly connected to a first refueling coupling of the gas dispensing unit, and the second main supply / exhaust line of the gas transport trailer is fluidly connected to a second refueling coupling of the gas dispensing unit, and wherein the method further comprises the steps of: connecting a first consumer to the first refueling coupling, connecting a second consumer to the second refueling coupling, and simultaneously refueling the first and second consumers from the one gas transport trailer. This enables the parallel refueling of two vehicles from one gas transport trailer.

[0033] The method utilizes the same advantages and preferred embodiments as the gas refueling system according to the invention, and vice versa. To avoid repetition, reference is made to the above statements, and their content is hereby incorporated.

[0034] Further features and advantages of the invention will become apparent from the attached claims and the following description, in which exemplary embodiments are explained in detail with reference to schematic drawings.

[0035] Specifically, we show: Fig. 1 An embodiment of a gas transport trailer according to the invention in a schematic view; Fig. 2 an embodiment of a gas refueling system according to the invention in a schematic view; Fig. 3 a further embodiment of a gas refueling system according to the invention in a schematic view; Fig. 4a mobile arrangement according to the invention comprising a gas dispensing unit and a gas transfer unit; and Fig. 5 A block diagram of a method according to the invention in a schematic view.

[0036] Fig. 1Figure 2 shows a gas transport trailer 2, which is equipped for transporting gaseous or liquid hydrogen. The gas transport trailer 2 has two storage sections 4, and more than two storage sections 4 may also be provided. The storage sections 4 each have the same design. Each of the storage sections 4 has at least one, and in particular several, receiving containers 6 for receiving gas. A temperature sensor 36 is connected to the receiving container 6, which is configured to sensing the temperature of the gas contained in the receiving container 6. Furthermore, a pressure gauge 60 and a pressure transmitter 64 are connected to the receiving container 6. These are fluid-conductingly connected to the receiving container 6 via a manual valve 58. The receiving container 6 is connected to a first main supply / outlet line 12 via a first supply line 8.Furthermore, the receiving vessel 6 is connected to a second main supply / outlet line 12' via a second supply line 8'. A first valve assembly 10, comprising a controlled valve, is provided for opening and closing a connection between the receiving vessel 6 and the first main supply / outlet line 12'. A second valve assembly 10', comprising a controlled valve 56', is provided for closing or opening a fluid flow from the receiving vessel 6 to the second main supply / outlet line 12'.

[0037] Both the storage section 4 shown on the right and the storage section 4 shown on the left have an identical structure. Referring to the first main inlet / outlet 12, a chimney system 72 is connected to it via a valve 84.

[0038] Furthermore, a mass flow sensor 34 is connected to the first main supply / outlet line 12. This enables the flow rate through the first main supply / outlet line 12 to be determined. The first main supply / outlet line 12 can be completely shut off by means of the controlled valve 66. The first main supply / outlet line 12 is also connected to the chimney 72 via a relief valve 70, which is followed by a throttle 74. In addition, a pressure sensor 38, a pressure gauge 60 (which can be isolated from the first main supply / outlet line 12 via a shut-off manual valve 62), and a temperature sensor 36 are connected to the first main supply / outlet line 12. A pressure surge valve 70 is also connected to the first main supply / outlet line 12, followed by a throttle 74 and a check valve 76. The check valve 76 is connected to the first main supply / outlet line 12. The pressure surge valve 70 ensures inerting of the first main supply / outlet line 12.A first connection unit 14 is fluid-conductingly connected to the first main supply / outlet line 12. This unit is designed as a double connection unit 14, i.e., it has two connections. Each connection is assigned a manual valve and a pressure gauge.

[0039] The second main supply / outlet line 12' has a fundamentally similar design. It can be shut off via a controlled valve 66'. Furthermore, the second main supply / outlet line 12' is connected via a valve 70 to a throttle 74 and from there to the chimney system 72. In addition, the second main supply / outlet line 12' is equipped with a pressure sensor 38, a temperature sensor 36, and a pressure gauge 60, which is connected to the second main supply / outlet line 12' via a lockable manual valve 62. Again, two connections are provided in the area of ​​a second connection unit 14', each of which can be shut off via manual valves 68'. Each outlet of the second connection unit 14' is also connected to a pressure gauge 60. A valve 70, designed as a pressure relief valve, is also connected to the main supply / outlet line 12'. A throttle valve 74 and a check valve 76 are located downstream of the valve 70.By designing the gas transport trailer 2 with a first main inlet / outlet 12 and a second main inlet / outlet 12', it becomes possible to empty the receiving containers 6 of sections 4 independently of each other into the two main inlets / outlets 12, 12', so that in a refueling process carried out from the gas transport trailer 2, two consumers can be refueled simultaneously and independently of each other, with the trailer behaving as if two trailers were available that operate independently of each other.

[0040] Figure 2Figure 3 shows a gas refueling system 300 for supplying gaseous or liquid gas, in particular hydrogen, to a consumer V or, in the case shown here, to two consumers V. The gas refueling system 300 includes a gas transport trailer 2 for transporting gaseous or liquid gas. Furthermore, the gas refueling system 300 includes a gas transfer unit 102 for transferring gas between a gas supply system 104 and the gas transport trailer 2. The gas refueling system 300 also includes a gas dispensing unit 200, shown schematically. The gas dispensing unit 200 is fluidly connected to the gas transfer unit 102 and is configured to dispense gas to a consumer V connected to the gas dispensing unit 200. In the present embodiment, the gas transfer unit 102 has four gas connections 118, 119, 127 and 128. The number of gas connections can be chosen arbitrarily and, for example,This also includes eight or more gas connections.

[0041] As in Figure 2As shown schematically, a gas transport trailer 2 is connected to the first gas connection 118 and the second gas connection 119. A first connection unit 14 of the gas transport trailer is fluidly connected to the first gas connection 118, and the second connection unit 14' of the gas transport trailer 2 is fluidly connected to the second gas connection 119. All gas connections 118, 119, 127, and 128 are connected to a main fluid line 108. As shown in the figure for the first gas connection 118, a pressure gauge and a manual valve assembly 142 are located adjacent to the first gas connection 118. Furthermore, a safety valve 125 and a pressure sensor 136 are connected to the main fluid line 108. The main fluid line 108 can be shut off via the valve 140. In addition, a temperature sensor 134, a relief valve 138, a check valve 150 and a valve 110 are connected to the main fluid line 108.Adjacent to a gas supply system 104 is a manual valve assembly 142, which forms a so-called double block and bleed configuration. Gas can be transferred from the gas supply system 104 to connected gas transport trailers 2. Furthermore, the gas transfer unit 102 also serves to transfer gas from a connected gas transport trailer 2 to a refueling module 152. This is accomplished by connecting a first connecting line 164 to the main fluid line 108 via a controlled valve 140 and a check valve 150. This first connecting line 164 supplies the gas to a first dispensing point interface 172. The first connecting line 164 is configured to transfer gas from the first gas connection 118 towards the refueling module 152.

[0042] By providing a connecting line 130, which establishes a connection to the third gas connection 127, gas can also be directed from this third gas connection 127 via the first connecting line 164 towards the refueling module 152.

[0043] Furthermore, a second connecting line 166 is provided, which connects the second gas connection 119 to the refueling module 152. A fluid-conducting connection to the fourth gas connection 128 also exists via the connecting line 132. In this way, in a scenario where, for example, a second gas transport trailer 2 is coupled with the gas connections 127 and 128, gas can be supplied to the first dispensing point interface 172 or a second dispensing point interface 172' from both connected gas transport trailers 2. If, for example, the filling pressure of a first connected gas transport trailer 2, which, as shown in the figure, is connected to the first gas connection 118 and the second gas connection 119, is insufficient to fill a consumer V, then another trailer connected to the third gas connection 127 and the fourth gas connection 128 can be used.

[0044] The second connecting line 166 is connected to a second tap interface 172'. The first connecting line 164 can be shut off and opened via a controlled valve 162. Furthermore, a connection to a chimney system 156 exists via a valve 160. The second connecting line 166 is also connected to the chimney system 156 in the same way, namely via the valve 160. The chimney system 156 is connected to the gas dispensing unit 200 via interfaces 154. The gas dispensing unit, in turn, has interfaces 210 for this purpose. In addition, a pressure transmitter 158 is assigned to each of the two connecting lines 164 and 166. The gas dispensing unit 200 is fluidly connected to the first dispensing point interface 172 and the second dispensing point interface 172', so that the gas can be transferred from the dispensing point interfaces 172, 172' to the refueling couplings 200, 206 to the respective connected consumers V.The gas dispensing unit 200 has a control device 208 which is configured to communicate with a control device 174 of the gas transfer unit 102 and / or the gas transport trailer 2, in particular bidirectionally.

[0045] Through the in the Figure 2The configuration shown can be summarized as follows: a gas transport trailer 2, which has two main inlet / outlet lines 12, 12', can be fluidly connected to two refueling couplings 206, 206' via the gas transfer unit 102, such that two connected consumers V can be refueled simultaneously and independently of each other from a single gas transport trailer 2, whereby the refueling parameters, e.g., the refueling pressure, can differ. If a gas transport trailer 2 is also connected to the third gas connection 127 and the fourth gas connection 128, then this can be used for refueling the consumers V by providing connecting lines 130, 132, if, for example, the overpressure of the first gas transport trailer 2 is no longer sufficient for a filling or refueling process.

[0046] Figure 3 shows an alternative embodiment of a gas refueling system 300, wherein in Figure 3Only the gas transfer unit 102 and the gas dispensing unit 200 are shown schematically. The gas transfer unit 102 has a similar structure in the area of ​​the main fluid line 108, which connects the gas supply system 104 to the connection points 118 and 119, as shown in Figure 2 shown, on. Unlike Figure 2 are in Figure 3 Only two gas connections 118, 119 are shown schematically. However, it is also possible to provide several gas connections here. In the exemplary embodiment of the Figure 3 The first gas connection 118 is fluidly connected to the first dispensing point interface 172 via the first connecting line 164. The second gas connection 119 is fluidly connected to the second dispensing point interface 172' via the second connecting line 166. In contrast to the one in the Figure 2In the illustrated embodiment, the first connecting line 164 is connected to the second connecting line 166 via a connecting line 168. A valve 170 is provided in the area of ​​the connecting line 168 for opening or closing the line 168. The connecting line 168 can be closed off via a valve 170. In this way, if a first gas transport trailer 2 is connected to the first gas connection 118 and a second gas transport trailer 2 is connected to the second gas connection 119, both dispensing point interfaces 172, 172' can be supplied from both gas connections 118, 119. For example, if...If, for the purpose of filling a consumer connected to the first dispensing point interface 172, the pressure in the gas transport trailer 2 connected to the first gas connection 118 is no longer sufficient to ensure overflow, gas can be supplied to the first dispensing point interface 172 from a second gas transport trailer 2 via the second gas connection 119. This can also be done in the same way with respect to the second dispensing point interface 172'. In this way, it is ensured that both dispensing point interfaces 172, 172' and the dispensing points 206, 206' connected to them always remain available, even if the fill level of one of the trailers connected to the gas connections 118, 119 is no longer sufficient for refueling or overflow.

[0047] Figure 4Figure 1 schematically shows a mobile unit 302 on which or in which a gas dispensing unit 200 and a gas transfer unit 102 are arranged. The mobile unit 302 can, for example, be designed as a container or arranged on a transportable base frame. This makes it possible to design the mobile unit 302 to be transportable, i.e., both the gas transfer unit 102 and the gas dispensing unit 200 can be designed to be transportable in such a way that they can be moved to the desired location.

[0048] Figure 5Figure 400 schematically depicts a method 400 for refueling a consumer V with gas using a gas refueling system 300. The method 400 comprises the following steps: requesting 402 gas of a specific quantity and / or pressure from a gas transport trailer 2 connected to a gas transfer unit 102 by means of a gas dispensing unit 200; supplying 404 gas from the gas transport trailer 2 to the gas transfer unit 102 and from the gas transfer unit 102 to the gas dispensing unit 200 and the consumer V, wherein the gas from the gas transport trailer 2 is supplied by cascaded output from storage sections 4 of the gas transport trailer; connecting 406 a first consumer V to the first refueling coupling 206; connecting 408 a second consumer V to the second refueling coupling 206'; simultaneous and Independent refueling of the first and second consumers V from the single gas transport trailer 2, optional,End refueling procedure 410 when consumer V has been refueled to pressure equalization and / or a maximum or target pressure of a tank of consumer V has been reached. Reference symbol list

[0049] 2 Gas transport trailer 4 Storage section 6 Receiving tank 8 First supply line 8' Second supply line 10 First valve assembly 10' Second valve assembly 12 First main supply / exhaust line 12' Second main supply / exhaust line 14 First connection unit 14' Second connection unit 24 Control unit 26 Storage tank 34 Mass flow sensor 36 Temperature sensor 38 Pressure sensor 56 Controlled valve of the storage section 56' Controlled valve of the storage section 58 Manual valve of the storage section 60 Pressure gauge 62 Shut-off manual valve 64 Pressure transmitter 66 Controlled valve 66' Controlled valve 68 Manual valve of the first main supply / exhaust line 68' Manual valve of the second main supply / exhaust line 70 Valve (pressure surge valve) 72 Chimney system 74 Throttle 76 Check valve 84 Valve 102 Gas transfer unit 104 Gas supply system 108 Main fluid line 110 Valve 112 First connection unit 114 Second connection unit 118 First gas connection 119 Second gas connection 125 Safety valve 127 Third gas connection 128 Fourth gas connection130 Connecting line 132 Connecting line 134 Temperature sensor 136 Pressure sensor 138 Relief valve 140 Controlled valve 142 Manual valve assembly 150 Check valve 152 Refueling module 154 Chimney interface for dispensing points 156 Chimney piping system 158 Pressure transmitter 160 Controlled valve 162 Controlled valve 164 First connecting line 166 Second connecting line 168 Connecting line 170 Valve of the connecting line 172 First dispensing point interface 172' Second dispensing point interface 174 Control unit 200 Gas dispensing unit 202 Hydrogen dispenser 204 Dual dispenser 206 First refueling coupling (dispensing point) 206' Second refueling coupling (dispensing point) 208 Control unit 210 Chimney interface for dispensing points 300 Gas refueling system 302 Mobile unit 400 Refueling procedure 402 Requesting gas 404 Dispensing gas 406 Connecting a first consumer 408 Connecting a second consumer 410 Ending refueling Consumer

Claims

1. Gas refueling system (300) for supplying gaseous or liquid gas, in particular hydrogen, to a consumer (V) with - a gas transport trailer (2) for transporting gaseous or liquid gas, comprising: - at least one storage section (4) with at least one receiving container (6) for receiving a gas to be transported, - a main supply / discharge line (12) which is connected to the receiving container (6) in a fluid-conducting manner, and - a connection unit (14) which is connected to the main supply / discharge line (12) in a fluid-conducting manner and is designed to be coupled to a connection of a gas transfer unit (102) in a fluid-conducting manner for loading or unloading the gas transport trailer (2), wherein the main supply / discharge line (12) is a first main supply / discharge line (12) and the gas transport trailer (2) has a second main supply / discharge line (12') which is connected to the receiving container (6) in a fluid-conducting manner, and a second connection unit (14') which is connected to the second main supply / discharge line (12') in a fluid-conducting manner and is designed to be coupled to a second connection of a gas transfer unit (102) in a fluid-conducting manner for loading or unloading the gas transport trailer (2), - a gas transfer unit (102) for transferring gas between a gas supply and / or discharge system (104) and the gas transport trailer (2), - a gas dispensing unit (200) which is connected to the gas transfer unit (102) in a fluid-conducting manner and is designed to deliver gas to a consumer (V) connected to the gas dispensing unit (200), wherein the gas refueling system (300) is designed to transfer gas from the gas transport trailer (2) to the gas transfer unit (102) and from there to the gas dispensing unit (200) and the consumer (V), characterized in that the gas transfer unit (102) and the gas dispensing unit (200) are designed as a mobile unit (302), in particular wherein the mobile unit is designed as a container or has a transportable base frame.

2. Gas refueling system (300) according to claim 1, wherein the storage section (4) has a first supply line (8), which is connected to the at least one receiving container (6) and the first main supply / discharge line (12) in a fluid-conducting manner, and a second supply line (8'), which is connected to at least one receiving container (6) and the second main supply / discharge line (12') in a fluid-conducting manner.

3. Gas refueling system (300) according to claim 2, with a first valve arrangement (10) which is designed to block and release fluid flow through the first supply line (8), and with a second valve arrangement (10') which is designed to block and release fluid flow through the second supply line (8').

4. Gas refueling system (300) according to claim 3, wherein the valve arrangements (10, 10') can be controlled independently of one another.

5. Gas refueling system (300) according to one of the preceding claims, wherein the gas transport trailer (2) further comprises a control unit (24) with a memory (26), and wherein the control unit (24) is designed to control the first valve arrangement (10) and the second valve arrangement (10').

6. Gas refueling system (300) according to one of the preceding claims, wherein the control unit (24) is configured to communicate with a coupled gas transfer unit (102) and / or a coupled gas dispensing unit (200), in particular bidirectionally.

7. Gas refueling system (300) according to one of the preceding claims, wherein the gas transfer unit (102) has at least two gas connections (118, 119) which can be coupled to the gas transport trailer (2) or several gas transport trailers (2), and two connecting lines (164, 166), each of which connects one of the gas connections (118, 119) to a dispensing point interface (172, 172') and / or a refueling coupling (206, 206') of the gas dispensing unit (200), in particular wherein the connecting lines (164, 166) are connected via a blockable connecting line (168).

8. Gas refueling system (300) according to one of the preceding claims, wherein the gas dispensing unit (200) comprises a hydrogen dispenser (202), in particular wherein the hydrogen dispenser (202) is designed as a single dispenser or dual dispenser (204) comprising two refueling couplings (206, 206').

9. Gas refueling system (300) according to one of the preceding claims, wherein the gas dispensing unit (200) comprises a control device (208) which is designed to communicate with a control device (116) of the gas transfer unit (102) and / or of the gas transport trailer (2), in particular bidirectionally.

10. Gas refueling system (300) according to one of the preceding claims, wherein the gas transfer unit (102) comprises: - a main fluid line (108), - a valve (110) arranged in the main fluid line (108), which is designed to selectively or block fluid flow through the main fluid line (108), - a first connection unit (112) connected to the main fluid line (108) for connecting the gas transfer unit (102) to the mobile gas storage (2), in particular the gas transport trailer (2), in a fluid-conducting manner, - a second connection unit (114) connected to the main fluid line (108) for connecting the gas transfer unit (102) to a gas supply and / or discharge system (104) in a fluid-conducting manner, - a control device (116) which is designed to control a transfer process of gas between the mobile gas storage (2) and the gas supply and / or discharge system (104) by controlling the valve (110).

11. Method (400) for refueling a consumer (V) with gas by means of a gas refueling system (300) according to one of the preceding claims, wherein the method (400) comprises the steps of: - requesting (402) gas of a specific quantity and / or pressure from a gas transport trailer (2) connected to a gas transfer unit (102) by means of a gas dispensing unit (200), - dispensing (404) gas from the gas transport trailer (2) to the gas transfer unit (102) and from the gas transfer unit (102) to the gas dispensing unit (200) and the consumer (V), wherein the gas from the gas transport trailer (2) is discharged by cascaded discharge from storage sections (4) of the gas transport trailer (2), - optionally, terminating (410) refueling when the consumer (V) has been refueled until pressure equalization and / or a maximum pressure or target pressure of a tank of the consumer (V) has been reached.

12. Method (400) according to claim 11, wherein the request for gas of a specific quantity and / or a specific pressure is made in accordance with a refueling protocol.

13. Method (400) according to claim 11 or 12, and wherein the first main supply / discharge line (12) of the gas transport trailer (2) is connected to a first refueling coupling (206) of the gas dispensing unit (200) in a fluid-conducting manner, and the second main supply / discharge line (12') of the gas transport trailer (2) is connected to a second refueling coupling (206') of the gas dispensing unit (200) in a fluid-conducting manner, and wherein the method (400) further comprises the steps of: - connecting (406) a first consumer (V) to the first refueling coupling (206), - connecting (408) a second consumer (V) to the second refueling coupling (206') - Simultaneous and independent refueling (410) of the first and second consumer (V) from the one gas transport trailer (2).

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