JP2012518143A - Apparatus and method for filling a tank with a cryogenic fluid - Google Patents

Abstract

The present invention relates to a method for filling a tank with a cryogenic fluid from a storage unit (1),
During the filling operation, part of the cryogenic fluid changes into the gas state of the tank, and during filling, at least part of the gas thus formed is discharged, the method connecting the storage unit to the tank In addition, a first flow path (2) capable of transferring the cryogenic fluid from the storage unit to the tank, and a gas outlet of the tank are connected to the filling station, and the gas is discharged from the tank to the outside. Including a filling station (5) including a second flow path (3) formed movably for the gas discharged to the filling station to be discharged, when the station considers the tank full Suitable for automatically stopping the filling operation, the presence of the cryogenic fluid in the gas transferred to the station, either inside or outside the station. As well as out, characterized in that it comprises means (23) for transmitting the detected data to a data acquisition and processing unit.
[Selection] Figure 1

Description

  The present invention relates to a method of filling a container or tank with a cryogenic fluid such as liquid nitrogen from a primary container or storage unit, the filling operation taking advantage of the pressure and gravity differences between the storage unit and the tank. .

  The present invention particularly relates to truck filling tanks used for the delivery and transport of heat sensitive products such as medicines and food products.

  One technique that uses this type of truck (called indirect injection) is to use one (or more) heat exchanger (eg, a simple coil) that carries cryogenic fluid, as well as air to the cold wall of the heat exchanger. Equipped with a contact airflow system (fan) and supplied to a chamber that cools the air inside the cold chamber of a truck, a heat exchanger or a plurality of heat exchangers originating from a tank of cryogenic fluid located under the truck A cryogenic fluid is used.

  One of the problems that arises here due to the facts during the filling operation is that a negligible part of the cryogenic fluid is converted to a gas state in the tank. Therefore, the maintenance of the pressure required for storage between the storage unit and the tank is different, and the gas must be discharged from the tank via the gas outlet.

  The valves that control the cryogenic fluid supplied to the tank on the one hand and the gas outlet of the tank on the other hand must be opened while the tank is being filled and closed from the end of the filling operation. The end of the filling operation may be identified automatically by suitable means or alternatively manually by an operator.

  As will be appreciated, it is necessary to have an element between the storage unit and the tank that controls the flow rate and the opening and closing (valve) of the flow path for supplying cryogenic fluid to the tank. Accordingly, in the following description, all of these elements (the type, set, operation) are collectively referred to as a “filling station”.

  Currently, this filling operation is generally managed by one of the following procedures.

  a) As a first method, the filling station is equipped with a single manual valve. A hose that moves liquid nitrogen connects the filling station (ie, a manual valve) with the tank. The gas created during the injection is discharged out of the tank to the unrestrained exterior. When the operator visually detects liquid particles in the gas discharged from the tank, the operator determines the end of the filling operation. After stopping the filling operation, the operator removes the hose.

The disadvantages of this solution can be summarized as follows:
・ The solution is not ergonomic. All of the sequences require manual action by the operator, which determines when the operator stops filling,
・ Risks for handling and evaluation errors, such as i) valve closing before the tank is completely filled, j) cause of liquid nitrogen splashing out of the tank, loss of cryogenic fluid and human burns Non-closing or delayed closing of the valve after full filling, causing danger, k) risk of hose rupture and impact without high hose purging,
The discharge of the gas formed outside cannot be controlled and as a result the tank is not kept at a constant pressure following the end of the filling operation. Therefore, the immediate minimum pressure needs to be maintained at a constant pressure for future use of the requested use.

  Indeed, in the case of the aforementioned manual filling operation, the gas outlet line of the tank is opened or closed using a manual valve present in the tank. The valve is left fully open / closed. During the filling operation, the manual valve is open and the gas is discharged, at which time the tank is at atmospheric pressure.

  When considering the use of liquid nitrogen from the tank, it is obvious that a minimum pressure of 2 to 2.5 bar is required and this manual procedure cannot achieve this minimum pressure. Therefore, it is necessary to wait for heat suction to increase the tank pressure, and in the implementation, it is necessary to install a pressurization system (evaporator).

b) Different types of methods stop the filling operation by transmitting information from these elements to the station via electrical cables when the tank is full, for example by elements added to the tank, such as solenoid valves or temperature probes Proposed to be
The ergonomics of this method are only slightly improved compared to the previous one, because many sequences are still controlled manually by the operator,
This method requires an electrical connection between the station and the tank, and ultimately this environment (cryogenicity, the risk of pulling the cable away, and the need to connect the cable to the tank, and it loses ergonomics Is a weak point.

  Therefore, it is better to limit the risk of errors pointed out above and to supply as needed at any time to reach the minimum pressure, depending on the consequences of using the tank concerned, even without the need to use a pressurized system Clearly, new technical solutions must be proposed that provide ergonomics (automation of all or part of the work).

  As will be shown in more detail below, the present invention is not essential in that the gas discharged from the tank is “lost”, but on the contrary, the gas discharge line from the tank discharges the tank from the tank. A new filling method is proposed in which this gas is recovered and connected by connection to a filling station where it is treated in terms of method control.

In summary,
The first flow path (sufficient or partially flexible) connects the storage unit to the tank via the filling station and meets the requirement to transfer cryogenic fluid from the storage unit to the tank;
The second flow path (sufficient or partially flexible) connects the gas outlets of the tank to the filling station, so that these gases are “processed”, in other words in terms of method control. Go to the filling station to be processed,
As will be shown in detail below, the control of the gas has a very important advantage, with the various embodiments of the invention returning the gas back to the filling station in roughly all and a wide range,
1. By using appropriate control means, filling can be stopped automatically when the tank is full by detecting the presence of liquid nitrogen in the gas return line (eg, liquid nitrogen and its gas By temperature probe indicating gas return line temperature drop due to temperature difference),
2. For example, due to the presence of a back pressure regulator in the gas return line, the required pressure level can be maintained in the tank at the end of the filling operation and in the case of later use where a minimum pressure is required (as described above). In order to prevent the tank from being unable to maintain a constant pressure after the filling operation,
3. Optionally, but more advantageously, a noise level can be reduced by installing a silencer at the station (eg, out of the station at the gas outlet)
4). Any flow of liquid nitrogen on the gland is completely prevented from being able to protect the gas outlet of the station by a small chamber of the entire filling station installed,
5. As shown below, the hose purge starts automatically at the end of the filling operation,
6). The automatic recognition of the tank can be arranged very advantageously, in particular to obtain traceability of filling results (final filling data, supplied quantity etc.)
7). Appropriate filling control by tank maximum permissible operating pressure (MAWP); by monitoring the actual pressure in the tank, which can be done by using pressure sensors on the gas return line and / or liquid nitrogen line in the filling station,
8). Also of importance is the possibility to limit the risk of hypoxia by being able to be discharged by remote control,
9. As will be appreciated, when compared to prior art solutions, additional elements such as solenoid valves to the tank, temperature probes, etc. are proposed and information is communicated by electrical cables between these elements and the station, Tanks or even multiple tanks that exist as described above do not require these control elements, and the station only assembles the necessary elements in one place in a single process, clearly undeniable cost benefits I will provide a.

  Thus, the present invention provides that during the filling operation, a portion of the cryogenic fluid is converted to a gas state in the tank, and during filling, at least a portion of the gas thus formed is discharged from the storage unit. The method of filling a tank with a cryogenic fluid of the method includes: connecting a storage unit to the tank; passing a first flow path that allows movement of the cryogenic fluid from the storage unit to the tank; and Connecting the gas outlet to the filling station and providing a filling station in which a second flow path formed to move the gas discharged to the filling station is terminated and the gas is discharged to the outside. The presence of cryogenic fluid in the gas transferred to the station and the transfer to the data collection and processing unit, inside or outside the station, the tank Comprises means for detecting a detection data suitable to automatically stop the filling operation when deemed filled the a.

  As is apparent to those skilled in the art, the concept of “full tank” must be understood with respect to the location of the gas return tube within the tank. In practice, the “edge” is not allowed to fill and free space (eg 5% of the tank volume) is always left behind and must be for liquid movement and vaporization. Thus, a tank is considered “full” when it is filled to 95%, for example, and due to filling kinetics, the liquid leaks towards the station after approaching the 95% level, and in the present invention Bring a stop. Therefore, those skilled in the art are familiar with the concept of “full tank”.

  According to an embodiment of the present invention, the detection means comprises a temperature probe that is disposed on the second flow path and exhibits an extremely drastic decrease in the temperature of the gas moved to the station.

  As clearly apparent to those skilled in the art and as this temperature drop suspicion illustrates, the drop in temperature recorded by the gas return line station will obviously vary according to the situation and condition. Illustratively, given the example of a 2-2.5 bar liquid nitrogen tank, the temperature of the cold gas is close to about −150 ° C., and when the liquid touches the temperature probe, the temperature measured by the probe is about − Decrease to 180 ° C.

  In practice, in the early hours of filling, the gas is “warm” (ambient temperature) and gradually falls until it reaches about −150 ° C. as filling proceeds.

  When the tank is “full”, eg at a level of 95%, the liquid flows past the tank and flows towards the probe of the station, as initially described as “small jet”, and a preliminary small jet However, it causes the temperature to drop to about -160 / -165 degrees, which triggers automatic interruption of the filling operation.

  According to the invention, the second flow path connected to the filling station at the gas outlet of the tank comprises a back pressure regulator, which does not require the use of a pressurization system and does not require the use of a pressurization system. Set to the upstream pressure set point that will reach the minimum tank pressure required for later use.

The present invention can employ at least one of the following technical features,
One between the A / storage unit and the tank, and the gas outlet of the tank and the other joint of the station are formed by two male / female double couplers,
A first double coupler ("storage") connected to the end of the flexible part of the first flow path joining the storage unit to the tank and exiting from the flexible part of the second flow path joining the gas outlet of the tank to the station Unit side)),
A second double coupler ("tank" connected to the end of the flexible part of the second flow path joining the gas outlet of the tank to the station and coming out of the flexible part of the first flow path joining the storage unit to the tank side")
-One of the two double couplers ("tank side") is male and at the same time the other of the two double couplers is female and the connection of the two double couplers is on the one hand the storage unit in the first flow path To the tank and, on the other hand, the gas outlet of the tank to the station in the second flow path to ensure fluid continuity.

  B / The second double coupler “tank side” is fluidly joined at the top of the tank.

  The C / purge line is equipped with a solenoid valve, which is advantageously connected upstream of the first flow path joining the storage unit to the tank and moving the gas discharged to the filling station. The second flow path is connected, thereby permitting the discharge of the gas discharged from the tank via this line (the purge line of the liquid flow path and the outside of the gas moved to the station) It will be understood that there are two separate and independent lines in the station as well).

  D / According to one embodiment of the present invention, at least a portion of the first flow path connecting the storage unit to the tank is a portion of the first flow path that is purged after a set time t1, the upstream portion of which is Purging is performed after filling is stopped by purging by opening a solenoid valve disposed on a purge line connected to the first flow path connecting the storage unit to the tank.

E / According to one embodiment of the present invention, the flexible part of the first flow path connecting the storage unit to the first double coupler is purged using the position of the following technique:
After a set time t1, the hose is purged by opening a solenoid valve located in a purge line connected to the first flow path whose upstream part connects the storage tank to the tank;
A sensor is provided for detecting the precise positioning of the first double coupler of a fixed element at the filling station (such as a “parking plate” next to the filling station), and the first to the element The fixing of one double coupler automatically starts purging the flexible part of the first flow path where the storage unit is connected to the first double coupler,
The F / tank is in a truck that is used to deliver and transport heat sensitive products such as medicines and food products.

According to an optional but advantageous embodiment of the invention, the invention has at least one of the following features:
• The facility is equipped with a second parallel line for transferring cryogenic fluid from the storage unit to the tank for a filling tank with a reduced maximum supply pressure, the second line being limited to the maximum pressure that the tank can tolerate. With adjusted holes,
Advantageously, the tank can be equipped with an element that can automatically recognize the tank for filling, eg RFID type electronic tags featuring passive or active technology, but Other recognition modes are possible, including manual selection of the tank to be filled ("confirmation") by the operator in the user interface,
Advantageously, a sensor is provided for detecting the exact positioning of the double coupler on a fixed element present at the filling station (eg a kind of “parking plate” next to the filling station) The fixing of the coupler automatically causes a hose purge that will occur at the end of the filling operation.

  And according to one possible embodiment of the present invention, the detection of the lack of a double coupler in the stationary element (eg parking plate) allows the start of filling so that when the coupler is rested on that plate May be used to reject the start.

  Other features and advantages will be apparent from the following description of exemplary embodiments of the invention, particularly provided with reference to the accompanying drawings.

FIG. 1 is an overall schematic view of the facility for filling the tanks of a refrigerated transport truck, showing the presence of a filling station between the storage unit and the tank. FIG. 2 is a detailed view of the contents of the filling station of one embodiment of the present invention.

FIG. 1 has two parts,
At the top, a general view showing a liquid nitrogen storage unit, the filling station of the present invention, a food transport truck equipped with the liquid nitrogen tank, and supplying liquid nitrogen to the tank and from tank to station Non-detailed view of two lines of vented gas return, double coupler ensures liquid continuity,
In the lower part, the diagram of the two flow paths is shown more clearly for the presence of two male / female double couplers to supply liquid to the tank and to discharge the gas formed in the tank to the station More detailed,
..The first flow coupler connecting the storage unit to the tank is terminated, and the second flow path flexible section connecting the gas outlet of the tank to the station flows out the first double coupler ("storage Unit side ")
..The second channel coupler connecting the gas outlet of the tank to the station is terminated and the second channel coupler connecting the storage unit to the tank flows out ("tank side") ")
..Connection of two double couplers to ensure continuity of liquid on the first flow path connecting the storage unit to the tank on the one hand and the second flow path connecting the gas outlet of the tank to the station on the other hand, the second coupler ("Tank side") is in fluid communication with the top of the tank.

  With reference to FIG. 2, according to a very complete embodiment, the gist of the filling station according to the invention can be examined in more detail.

  FIG. 2 illustrates the liquid nitrogen tank 1, the contents of the filling station 5, and the cryogenic fluid supply line (to 2), the gas return line (from 3) and the various lines according to the illustrated embodiment. Indicates a line that passes or terminates through an equipment accessory.

  For better readability, the two connections of the double coupler are separated by a space (see 4) in this figure, but, as will be clearly understood by those skilled in the art, the two double couplers are A storage unit side first double coupler, such as a male double “connector”, and a tank side second double coupler, such as a female double “housing”, in other words, a duplex that faces and receives a male double connector It can be understood that this is a flow path.

  The double couplers are located outside the area representing the station, but this is an auxiliary point for definition, and these double couplers are optional parts of the station without changing the scope of the invention in any way. Can be regarded as

  In the liquid nitrogen first flow path, the presence of the solenoid valve 10 and the pressure sensor 12 can be recognized.

  In the gas return second flow path, the presence is not only the temperature sensor 23 (the essential role is described above in this description as well above) and the pressure sensor 22, but also the solenoid valve 20 and the back pressure. The regulator 21 (the role has been outlined above) can be recognized.

FIG. 2 also better illustrates one of the aspects of the invention already described, ie
Means for discharging the gas discharged from the tank and moved to the station to the outside: the purge line 30 is connected to the liquid nitrogen flow path, for example, upstream thereof, and for this embodiment the purge A gas return flow path is connected to the line and the purge line is fitted with a purge solenoid valve 31 and a very advantageous silencer 33 for this embodiment.

  FIG. 2 likewise shows a manual bypass valve in each line, of course just optional, but in the event of a station malfunction, a valve 11, provided for emergency operation for a limited period of time, 23 and 32 are present.

  Care must be taken for reasons of clarity.

The figure does not show a second parallel line through which cryogenic fluid is transferred from the storage unit to the tank to fill the tank reduced to the maximum supply pressure, which is the maximum that the tank can tolerate. It includes regulated holes to limit the pressure, but is already in the above-described state, and this possibility is feasible and advantageous.

  As shown, a temperature probe 23 installed on the gas return line in the filling station detects the presence of liquid nitrogen in the gas return line due to an abnormal extreme drop in the temperature of the gas return line. To indicate completion of tank filling. The detection data is sent to a unit that acquires and processes the data at the station (not shown to prevent clutter in the figure), and the unit instructs to stop filling (pressure loss in the tank and its inadvertent The valve 10 is closed to prevent deaeration and the valve 20 is closed).

When the operator disconnects the “storage tank side” double coupler (also called the “station side” double coupler), the coupler's two (liquid line and gas line) valve flaps are closed, and the liquid is the liquid line valve. The space between the solenoid valve 10 of the flap and the liquid line is restricted. In order to perform the purge, the valve 31 of the purge line 30 will be opened and controlled thereby. For the sake of explanation, two events are used to command the opening of this valve 31,
The station can detect the presence of a “storage unit” double coupler that, for example, returns the station to its fixed support after the coupler is missing,
A unit can likewise count the end of a time interval (eg 2 minutes) after it (in other words the unit) has been commanded to stop filling.

  Another possible situation (no matter how very specific) is that other filling operations (e.g., when high nitrogen is required, the second tank under the truck before the time interval t1 elapses). In this case, of course, it is unnecessary and redundant to start an intermediate purge, and it is the separation of the double coupler of the first tank and the double coupler. Simplified by the operator for reconnection to the second tank and then pressing the “Start” button to start the second filling, the purge is only performed after the second filling is stopped.

  Needless to say, the description of two consecutive filling operations in two tanks is obviously equally applicable to more than two tanks, and therefore more rare facts than two consecutive filling operations. The principle is still apparent from the above.

Thanks to the presence of the back pressure regulator 21, the outgoing gas returns to the filling station and is controlled so that a minimum pressure (eg 2 bar) is maintained in the tank,
Certainly, it is very useful for applications after a minimum pressure that is not a simple standby pressure is required, and according to the present invention, the solenoid valve 20 can be controlled according to the pressure required for the tank.

  As will be appreciated, manual filling operations according to the prior art do not allow such control because, in such manual filling operations, the tank gas outlet is opened and closed by a tank manual valve. Is done. The valve can be completely opened and closed. During the filling operation, the manual valve is opened, the gas is discharged, and the tank is thus again at atmospheric pressure, ensuring that the minimum pressure required by later use (eg for cooled trucking) 2-2.5 bar) for "direct injection" technology cannot be delivered.

  According to this conventional manual procedure, it is necessary to wait for heat input to increase the pressure in the tank or to have a pressurization system (evaporator).

  As illustrated, the embodiment comprises the following automatic tank filling procedure according to the present invention.

  1) Connection by an operator to a tank side double coupler which is filled with a double coupler at the filling station. The tank cavity is then connected by a hose to the filling station and its control elements (valves, pressure sensors, temperature sensors, etc.).

  2) Consideration of the tank to be filled and consideration of its maximum endurance pressure.

  3) The operator presses a button to start the filling operation.

  4) Hose pressure is checked (by sensor 12) to confirm proper connection of the tank.

  5) If the hose is properly connected, open the liquid nitrogen line valve 10.

  6) During the filling operation, the liquid pressure (12) is monitored like a tank pressure indicator, and the valve 10 of the liquid nitrogen line is closed in case of excessive pressure, and the sensor 12 is Ensures that the pressure does not exceed a safe pressure and thus causes the valve 10 to close as required.

  7) During filling, the opening and closing cycle of the valve 20 in the gas return line controls the tank pressure and thereby increases the filling rate.

  As a first typical application, tank A requires an operating pressure of 2.5 bar, while as a second typical application, tank B requires only 1 bar.

  The gas return line back pressure regulator 21 and solenoid valve 20 provide a maximum outflow from the gas outlet while the required minimum pressure is maintained.

  8) Gas return line moving low temperature detection (as already described above) indicates the presence of liquid nitrogen in the gas return line and full tank filling. Valve 10 is closed as a result, and valve 20 is the same, and the operator is informed of the end of filling by any suitable (audible, visual) signal.

  In particularly safe situations, in the exact and exceptional case, the signal in question is allowed by the operator to avoid relying on the automatic stop of the filling operation by the station, instead, for example by the operator himself, eg Obviously, by pressing the appropriate button, a command is given to stop the filling operation, but above all the advantage of the present invention is that no gas is lost, but the error mentioned above. Obviously, it is to be returned to the process control station by limiting the human action that causes the failure.

  9) After a set time t1 (eg 2 minutes), the liquid nitrogen transfer hose is purged by opening the solenoid valve 31 connecting the liquid nitrogen line to the station gas outlet. The purge can be similarly initiated when the presence of a “station” double coupler is detected on the stationary plate of the station.

  As will be appreciated, it is optional, undoubtedly very advantageous, but still optional, that the two “fill / gas return” operations are pre-formed by the male double coupler of the female double coupler, and Similarly, connecting two appropriately separated flow paths (and couplers) generated from a station to a tank or two appropriately separated couplers in fluid connection with the tank without departing from the scope of the present invention. Is possible.

  As already mentioned, the data acquisition and processing device is preferably located in the station for obvious reasons of wiring, but without departing from the scope of the invention, the unit is located outside the station. It may equally well be arranged and the required cable is then drawn between the unit and the station.

Claims (14)

The cryogenic fluid is converted into a gas state in the tank during the filling operation, and at least a part of the gas thus formed is discharged during the filling, and the cryogenic fluid from the storage unit (1) is discharged into the tank. In the filling method,
In the method, the storage unit is connected to the tank, the first flow path (2) capable of transferring the cryogenic fluid from the storage unit to the tank, and the gas outlet of the tank to the filling station. A filling station (5) that connects and passes through the second flow path (3) formed to be movable so that the gas discharged from the tank to the filling station for discharging the gas to the outside can be provided. Including
The station is suitable for automatically stopping the filling operation when the tank is considered full, the presence of the cryogenic fluid in the gas moved to the station, either inside or outside the station. And a means (23) for transmitting the detected data to the data acquisition and processing unit,
The second channel, where the gas outlet of the tank is connected to the filling station, is fitted with a back pressure regulator (21), which does not require the use of a pressurization system and does not require the use of a pressure system. A filling method, characterized in that it is set to an upstream pressure setpoint that allows a minimum pressure in the tank to be used for later use.   The said detection means consists of the temperature probe arrange | positioned in the said 2nd flow path, and shows the extreme fall of the temperature in the said gas moved to the said station abnormally, It was described in Claim 1 characterized by the above-mentioned. Filling method. The connection between the storage unit and the tank, one between the gas outlet of the tank and the station, is formed by two male-female double coupler (3) systems,
The first channel flexible portion connecting the storage unit to the tank is terminated, and the second flow channel flexible portion connecting the gas outlet of the tank to the station flows out first. Double coupler ("storage unit side"),
Closing the flexible part of the second flow path connecting the gas outlet of the tank to the station and flowing out the flexible part of the first flow path connecting the storage unit to the tank; 2 double coupler ("tank side"),
One of the two double couplers is male and the other is female, the junction of the two double couplers on the one hand of the first flow path connecting the storage unit to the tank, and On the other hand, ensuring the fluid continuity of the second flow path connecting the outlet of the tank to the station,
The filling method according to claim 1, wherein the filling method is performed.   The filling method according to claim 3, wherein the second double coupler is fluidly connected to an upper portion of the tank. A purge line (30) fitted with a solenoid valve (31) is provided;
The purge line is connected upstream of the first flow path connecting the storage unit to the tank, and the second flow path moving the gas discharged to the filling station is advantageously connected, 5. The gas discharged from the tank and moved to the station by the gas can be discharged to the outside through the purge line. Filling method.   At least a part of the first flow path connecting the storage unit to the tank is disposed in the purge line after a set time t1 after the filling is stopped. 6. The filling method according to claim 5, wherein purging is performed by purging by opening the solenoid valve. The flexible portion of the first flow path connecting the storage unit to the first double coupler is purged using one of the following techniques:
-After the set time t1 has elapsed, the hose opens a solenoid valve disposed in a purge line connected to the upstream portion of the first flow path connecting the storage unit to the tank in the upstream portion thereof. Purged by
A sensor for detecting the correct positioning of the first double coupler is provided on the fixing element in the filling station, the fixing of the first double coupler to the element being connected to the storage unit of the first double coupler 5. The filling method according to claim 3, wherein a purge of the flexible portion of the first channel connected to the base is started.   The filling method according to any one of claims 1 to 7, wherein the tank is in a truck used for transporting and delivering heat-sensitive products such as medicines and food products. During the filling operation, a part of the cryogenic fluid is converted into a gas state in the tank, and at least part of the gas formed thereby is discharged into the tank from the storage unit (1). In equipment,
A filling station (5);
A first fluid flow path (2) that passes through the filling station, connects the storage unit to the tank, and permits transfer of the cryogenic fluid from the storage unit to the tank;
A second fluid flow path (3) for connecting the gas outlet of the tank to the filling station and moving the gas delivered to the filling station;
Means (23) for detecting the presence of the cryogenic fluid in the gas transferred to the station;
A data acquisition and processing unit that automatically receives detection data from the detection means and automatically stops the previous filling operation when the received data indicates that the tank is full according to the received data,
With
The second flow path connecting the gas outlet of the tank to the filling station is equipped with a back pressure regulator (21), which does not require the use of a pressurization system and does not require the use of a pressurized system. Filling equipment, characterized in that it is set to an upstream pressure setpoint that allows it to reach the minimum pressure in the tank required for later use.   10. The filling equipment according to claim 9, wherein the detection means comprises a temperature probe, and it is suitable to show an extreme drop in temperature in the gas moved to the station. The connection between the storage unit and the tank, one between the gas outlet of the tank and the station, is formed by two male-female double coupler (3) systems,
The first channel flexible portion connecting the storage unit to the tank is terminated, and the second flow channel flexible portion connecting the gas outlet of the tank to the station flows out first. Double coupler ("storage unit side"),
Closing the flexible part of the second flow path connecting the gas outlet of the tank to the station and flowing out the flexible part of the first flow path connecting the storage unit to the tank; 2 double coupler ("tank side"),
One of the two double couplers is male and the other is female, the junction of the two double couplers on the one hand of the first flow path connecting the storage unit to the tank, and On the other hand, ensuring the fluid continuity of the second flow path connecting the outlet of the tank to the station,
The filling equipment according to claim 9 or 10, characterized by the above.   12. The filling equipment according to claim 11, wherein the second double coupler is fluidly connected to an upper portion of the tank. A purge line (30) equipped with a solenoid valve (31);
The purge line is connected upstream of the first flow path connecting the storage unit to the tank, and the second flow path moving the gas discharged to the filling station is advantageously connected, 13. The gas discharged from the tank and moved to the station can be discharged to the outside via the purge line according to any one of claims 9 to 12. Filling equipment.   14. The filling facility according to claim 9, wherein the tank is in a truck used for transporting and delivering heat-sensitive products such as medicines and food products.

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