DE102022104644A1 - Introducing a fluid into a port - Google Patents

Abstract

Device (2) for introducing a fluid into a connection (100), comprising - a fluid source (200), - a delivery line (201), and - an at least partially vacuum-insulated connection device (202) with a socket (208) for connecting the delivery line (201) to the connection (100), the delivery line (201) having a first end (203) connected to the fluid source (200) and having a second end (204) connected to an interior space (205) of the connection device (202). , wherein the connecting device (202) comprises a valve (206) and a valve drive (207) coupled to the valve (206), the connecting piece (208) being open at a first end (209) and being open at a second end (210) is connected to the interior (205) of the connection device (202) via the valve (206), the valve (206) and the valve drive (207) being arranged at a distance from one another on a main axis (211) of the connection device (202) and via a rod (213) formed along the main axis (211) are mechanically coupled to one another, the rod (213) having a plurality of rod sections (242,243,244,245), a first of the rod sections (242) being arranged closer to the valve (206) than a second of the rod sections (243), and wherein the first rod section (242) has a higher thermal conductivity than the second rod section (243).

Description

The invention relates to a device for introducing a fluid into a connection, an arrangement comprising such a device, a method for refueling a vehicle and a connection device. The invention can be used in particular to refuel vehicles with liquid hydrogen.

With the energy transition, conventional energy sources such as fossil fuels are to be increasingly replaced by alternatives. Liquefied gases are promising for this purpose in numerous applications. For example, vehicles can be powered by liquid hydrogen. However, these and numerous other applications require low temperatures and/or high pressures. This makes handling difficult. For example, filling up a vehicle with liquid hydrogen should be safe, easy and quick for a user. The equipment used at the gas station should be just as cheap and reliable as the corresponding connection to the vehicle. The same applies in general to many applications in which a fluid is to be transferred from one line to another. However, known solutions for this are inadequate with regard to the stated requirements.

The object of the present invention is, based on the prior art described, to present a cheap and reliable device with which a fluid can be introduced into a connection safely, easily and quickly. In addition, a corresponding arrangement is to be presented. Furthermore, a method is to be presented with which a vehicle can be refueled with a fluid safely, easily and quickly. In addition, an inexpensive and reliable connection device is to be presented, with which a line can be connected to a connection safely, easily and quickly.

These objects are achieved with the device, the arrangement, the method and the connection device according to the independent claims. Further advantageous developments are specified in the dependent claims. The features presented in the claims and in the description can be combined with one another in any technologically meaningful way.

• - eine Fluidquelle,
• - eine Abgabeleitung, und
• - eine zumindest teilweise vakuumisolierte Anschlusseinrichtung mit einem Stutzen zum Anschließen der Abgabeleitung an den Anschluss,

wobei die Abgabeleitung mit einem ersten Ende an der Fluidquelle und mit einem zweiten Ende an einen Innenraum der Anschlusseinrichtung angebunden ist, wobei die Anschlusseinrichtung ein Ventil und einen mit dem Ventil gekoppelten Ventilantrieb umfasst, wobei der Stutzen an einem ersten Ende offen ist und an einem zweiten Ende über das Ventil mit dem Innenraum der Anschlusseinrichtung verbunden ist,
wobei das Ventil und der Ventilantrieb auf einer Hauptachse der Anschlusseinrichtung voneinander beabstandet angeordnet sind und über eine entlang der Hauptachse ausgebildete Stange mechanisch miteinander gekoppelt sind, wobei die Stange mehrere Stangenabschnitte aufweist, wobei ein erster der Stangenabschnitte näher an dem Ventil angeordnet ist als ein zweiter der Stangenabschnitte, und wobei der erste Stangenabschnitt eine höhere thermische Leitfähigkeit hat als der zweite der Stangenabschnitt.According to the invention, a device for introducing a fluid into a connection is presented. The device includes:

• - a fluid source,
• - a delivery line, and
• - an at least partially vacuum-insulated connection device with a socket for connecting the delivery line to the connection,

wherein the delivery line is connected at a first end to the fluid source and at a second end to an interior space of the connecting device, wherein the connecting device comprises a valve and a valve drive coupled to the valve, the nozzle being open at a first end and at a second end is connected to the interior of the connecting device via the valve,
wherein the valve and the valve drive are arranged at a distance from one another on a main axis of the connecting device and are mechanically coupled to one another via a rod formed along the main axis, the rod having a plurality of rod sections, a first of the rod sections being arranged closer to the valve than a second of the slugs, and wherein the first slug has a higher thermal conductivity than the second slug.

The device described is suitable for introducing a fluid into a connection. The device can be used, for example, to fill up a vehicle with a fluid. In that case, the vehicle has the connection which is connected to a fluid tank of the vehicle. In this case, the device can be regarded as part of a gas station. However, the device described is not limited to this application. Rather, the device described can be used in all applications in which a line is to be connected to a connection in such a way that a fluid is introduced from the line into the connection. Insofar as reference is made herein to the refueling of a vehicle, this should therefore only be understood as an example.

The fluid can be liquid and/or gaseous. The fluid can have a liquid and a gaseous phase. It is also conceivable that the fluid is in a supercritical state in which it is not possible to distinguish between liquid and gaseous. The fluid is preferably a liquid gas. A liquefied gas is a substance that is in its liquid state, although under standard conditions it would be gaseous. A liquid gas is therefore present under corresponding conditions that deviate from the standard conditions, in particular at a correspondingly low temperature and/or at a correspondingly high pressure. If the device is designed to introduce a liquid gas into a connection, there are corresponding requirements for the device and its elements ments, especially with regard to the materials used and with regard to insulation and tightness.

The device described can be used with any fluid. The device described is particularly suitable for a fluid which can be used as a fuel, in particular as a fuel gas for a vehicle. Liquid natural gas (LNG—Liquified Natural Gas) or autogas (LPG—Liquified Petroleum Gas), for example, can be considered as the fluid.

The fluid is preferably hydrogen. The hydrogen can be liquid and/or gaseous. The hydrogen can also be supercritical. Liquefied hydrogen is typically used to fuel vehicles at a temperature of less than -253°C and a pressure of less than 16.5 bar. The device described is therefore preferably suitable for such a temperature and pressure.

The connection can be connected to a tank, for example. This also includes an embodiment in which the connection is integrated in a boundary of the tank and to this extent could also be considered part of the tank. In the simplest case, the connection can be an opening in a boundary of a tank. However, it is preferred that the connection includes a valve which closes the tank when it is not being filled with fluid via the connection. In addition, the connection can be connected to the tank via a line. However, the connection can also be connected to a line which supplies the fluid directly to a consumer. This is particularly conceivable in industrial plants.

The device includes a fluid source. This is preferably a fluid storage tank, for example a hydrogen storage tank of a gas station. However, the fluid source can also be a pipeline, for example, with which the fluid can be fed continuously. It is generally sufficient that the fluid is made available at the fluid source in such a way that it can be removed from it.

Furthermore, the device has a delivery line. The fluid source can be connected to the connector via the delivery line. If the device is set up to fill up a vehicle with fluid, in particular as part of a filling station, the delivery line can also be referred to as a filling line.

Furthermore, the device has a connection device with a socket for connecting the delivery line to the connection. If the device is set up to fill up a vehicle with fluid, in particular as part of a filling station, the connection device can also be referred to as a fuel nozzle. In this case, a user can connect the connection device to the connection of his vehicle.

The connection device has a socket with which the connection device can be connected to the connection. A socket is to be understood as meaning a piece of pipe which is set up to interact with the connection. If the fluid is introduced into the connection with the device described, the fluid flows through the connection piece.

The connection device is at least partially vacuum-insulated. To this extent, the connection device can be used with a cold fluid. A user can be protected from injury by the vacuum insulation. In addition, the vacuum insulation can reduce energy loss due to heat input from the environment. The vacuum insulation can be combined with other types of insulation to improve protection and/or energy efficiency. The areas of the connecting device that come into contact with the fluid are preferably vacuum-insulated. The vacuum insulation can be implemented, for example, in that the connecting device has an interior space that is delimited by a double-walled boundary.

The delivery line is connected to the fluid source with a first end and to an interior space of the connection device with a second end. If the device is set up for refueling a vehicle with fluid, in particular as part of a gas station, the delivery line can include a section which connects a gas pump to the connection device. Furthermore, the delivery line can comprise a section which runs inside the dispenser and a section which connects the dispenser to a fluid storage tank as a fluid source. The respective delivery lines of several devices configured as described can be connected to a fluid source. This is particularly the case at a gas station with multiple pumps.

The connecting device has an interior space. If the fluid is introduced into the connection with the device described, it flows out of the discharge line into the interior of the connection device, through the interior of the connection device and through the socket as well as into the connection connected to it. In this respect, the interior of the connecting device can also be regarded as a line.

The connecting device includes a valve and a valve drive coupled to the valve. The valve serves to close the connection device if no fluid is released from it. The valve can be opened and closed with the valve drive.

The connecting piece of the connection device is open at a first end and connected to the interior of the connection device at a second end via the valve. If the valve is closed, the fluid cannot escape from the interior of the connection device via the connection piece, preferably also not via another opening. If the valve is open, the fluid can be introduced into the connection. The fluid flows from the interior of the connecting device through the open valve into the socket.

The valve preferably has a valve plunger and a valve opening. If the valve is closed, the valve plunger preferably closes the valve opening. If the valve is open, the valve plunger preferably releases the valve opening. In that case, the fluid can flow through the valve by the fluid flowing through the valve opening. In this respect, the valve opening can also be interpreted as an opening in the interior of the connecting device. The valve opening is preferably located on a first side of the valve. The interior of the connecting device is preferably connected to the valve on a second side of the valve.

The valve stem is preferably movable along a valve axis between a first end position and a second end position. The valve axis is defined in particular by the valve stem being able to move along the valve axis. The valve axis preferably coincides with an axis of the valve stem and/or with the main axis of the connecting device. The valve opening is preferably formed perpendicular to the valve axis. A midpoint of the valve opening preferably lies on the valve axis. Preferably, the valve plunger cannot be moved beyond the first end position and/or beyond the second end position. This can be achieved by one or more appropriate stops. The valve plunger preferably closes the valve opening in its second end position. To this extent, the valve is closed when the valve plunger is in its second end position. If the valve plunger is in its first end position, the valve plunger preferably releases the valve opening. To this extent, the valve is open when the valve plunger is in its first end position. However, the valve is preferably not only open when the valve plunger is in its first end position. If the valve plunger is between its first end position and its second end position, the valve is preferably partially open.

The valve and the valve drive are arranged at a distance from one another on a main axis of the connecting device. The connection device is preferably at least partially rotationally symmetrical about the main axis. For example, the connecting device can have a delimitation of an interior space, which is designed as a wall running around the main axis. The connection can preferably be connected to the connection device in a direction parallel to the main axis.

The valve drive and the valve are mechanically coupled to one another via a rod formed along the main axis. The valve drive and the valve are preferably rigidly coupled to one another via the rod. A movement of the valve drive consequently causes a movement of the valve plunger. The valve drive can, for example, have a cylinder with a piston, the piston being movable, for example, pneumatically within the cylinder. This is a robust and simple design.

Fluids are often found at low temperatures. In order to be able to withstand this particularly well, the rod is of multi-part design in that the rod has a plurality of rod sections. A rod section means a part of the rod that forms an axial section of the rod. The bar can be considered to be divided axially into the bar sections, where adjacent ones of the bar sections can overlap. The latter is particularly useful because the rod sections can be held together so stably. For example, adjacent rod sections can be plugged into one another and thus connected to one another. Neighboring rod sections do not have to be separated from one another by a clearly recognizable component boundary. It is sufficient for the rod to have a part for each of the rod sections described that has the properties described in each case.

Due to the subdivision of the rod into the rod sections described, the rod can fulfill various functions particularly well. In particular, the rod can reliably couple the valve drive and the valve to one another and at the same time contribute to the thermal insulation of the connection device. A particular contribution to this is that the rod has a first rod section and a second rod section. The first rod section is located closer to the valve than the second rod section. The first pole section has a higher thermal conductivity than the second of the rod sections. The second rod section can therefore contribute to thermal insulation between the cold fluid and the outside of the connection device. The second rod section is preferably formed from a plastic, in particular from glass fiber reinforced plastic (GRP). A more robust material can be used for the first rod section, which can withstand the low temperatures of the fluid particularly well, for example steel, in particular made of stainless steel. The second rod section can also help prevent fluid from reaching the valve train. The fluid preferably flows around the first rod section, while the second rod section does not come into contact with the fluid at all or only at a first end.

The bar may have two or more bar sections. In the simplest case, the rod has exactly two rod sections which are directly connected to one another, with the first rod section being connected to the valve and the second rod section being connected to the valve drive. However, the rod can also have further rod sections between the valve and the first rod section, between the first rod section and the second rod section and/or between the second rod section and the valve drive.

In a preferred embodiment of the device, the first rod section and the second rod section are connected to one another by means of a plug connection.

The plug-in connection enables the two rod sections to be held together in a stable manner. At the same time, the plug-in connection can be designed easily during assembly and can be easily released again for maintenance purposes. In this embodiment, the first rod section and the second rod section overlap. The plug connection does not have to be designed in a non-positive manner. In this case, the rod sections can easily be pulled apart. In this case, the rod can nevertheless be held together in that the valve stem—which is preferred—is prestressed into its second end position, for example by a spring. However, the plug-in connection can also be non-positive. The first rod section and the second rod section are in direct contact with one another. No further rod section is therefore formed between the first rod section and the second rod section.

In a further preferred embodiment of the device, the second rod section is hollow.

The second rod section is used in particular for thermal insulation of the connecting device. In the present embodiment, the hollow configuration of the second rod section contributes to this. In addition, the plug-in connection to the first rod section can be made particularly light due to the hollow design. In the simplest case, the first rod section is a solid cylindrical body which can be inserted into a correspondingly dimensioned cylindrical cavity in the second rod section. In order that the first rod section cannot get further into the second rod section than desired, the first rod section preferably has a flange which rests against the second rod section in the assembled state. The flange thus serves as a stop for a relative movement between the first rod section and the second rod section.

In a further preferred embodiment of the device, the first rod section is connected directly to the valve.

In this embodiment there is no further rod section between the valve and the first rod section. In an alternative embodiment, the valve could be connected indirectly to the first rod section via a further element, in particular via a further rod section.

In a further preferred embodiment of the device, the rod between the valve drive and the second rod section also has a third rod section which has bellows for sealing.

The third rod section can be connected to the second rod section on the one hand and to the valve drive on the other hand. However, further rod sections can also be provided between the second rod section and the third rod section and/or between the third rod section and the valve drive.

The third rod section serves to seal the interior of the connecting device. For this purpose, the third rod section has a bellows. A bellows means a corrugated part of the rod or a corrugated element on the rod. The bellows can also be referred to as a corrugated section or as a corrugated element. The bellows is preferably made of a metal, in particular steel, for example stainless steel.

The interior of the connecting device can be sealed with the bellows in the manner of a bellows seal. For this purpose, the rod is preferably guided, at least in part of the third rod section, through a through-opening in the delimitation of the interior space of the connecting device. The passage opening can be formed, for example, by a wall running around the main axis. The through-opening is preferably cylindrical. The bellows can seal a remaining gap between the rod and the edge of the through hole. This type of sealing allows the rod to be moved along the main axis of the connection device in order to actuate the valve without the interior space of the connection device becoming leaky as a result. In this respect, the bellows can contribute to the valve being able to be actuated with the valve drive without the fluid escaping from the interior of the connecting device into the environment in an uncontrolled manner.

In a further preferred embodiment of the device, the rod between the valve drive and the second rod section also has a fourth rod section, which has an adjusting element for adjusting a length of the rod.

The fourth rod section serves to adjust the length of the rod in such a way that a valve of the connection can be actuated via the valve of the connection device.

The adjusting element can be realized in particular by one or more screw connections. For example, the fourth rod section may include a first inner member, a second inner member, and an outer member. The first inner member and the second inner member may each be axially spaced from each other along the major axis of the fitting. A first end of the fourth rod section may be formed on the first inner member. A second end of the fourth rod section may be formed on the second inner member. The first inner member and the second inner member may each be solid and cylindrical. The outer element is preferably in the form of a hollow cylinder. The first inner element and the second inner element can be connected to one another via the outer element, in particular via a respective screw connection. By rotating the inner element and/or the outer element about the respective axis - which preferably coincides with the main axis of the connecting device - the distance between the first inner element and the second inner element and to this extent the length of the fourth longitudinal section can be changed.

If the rod also has a third rod section, the fourth rod section is preferably arranged between the third rod section and the valve drive. However, it is also possible for the fourth rod section to be arranged between the second rod section and the third rod section.

In a further preferred embodiment of the device, the valve drive is held on a housing of the connection device by a screw connection, the rod and the valve being able to be removed from the housing when the screw connection is loosened.

An axis of the screw connection preferably coincides with the main axis of the connecting device. The valve drive can therefore be detached from the housing of the connection device by rotating the valve drive about the main axis of the connection device. If the valve drive is unscrewed from the housing of the connecting device in this way, the valve drive can be removed from the housing with the rod. This is particularly useful for maintenance purposes.

The rod is preferably tethered to the valve to the extent that the rod contacts the valve. For example, the rod can engage in a blind hole of the valve stem, which is formed along the main axis of the connection device. In this case, the rod can be clamped in the blind hole and to this extent can be connected in a non-positive manner to the valve stem. However, such a non-positive connection between the rod and the valve is not required. If the valve drive is screwed to the housing, the rod can be held reliably on the valve even without such a fixed connection. This is the case, in particular, in the preferred case in which the valve plunger is prestressed into its second end position, for example by a spring. If the rod with the valve drive is removed from the housing, the connection of the rod to the valve does not have to be loosened separately. If, on the other hand, the rod is connected to the valve via a clamped connection, this clamped connection can be released by pulling the rod out of the housing with a corresponding force.

As a further aspect of the invention, an arrangement is presented which has a device configured as described and the connection and a fluid tank connected thereto, the connection device of the device being connected to the connection.

The described advantages and features of the device can be applied and transferred to the arrangement, and vice versa.

The fluid tank is preferably a fluid tank for a vehicle, in particular a hydrogen tank for a vehicle. The arrangement preferably also comprises a vehicle in which the fluid tank is arranged. The vehicle can in particular be a motor vehicle or a truck. However, it can also be a ship, for example.

1. a) über die Anschlusseinrichtung Anschließen der Abgabeleitung an den Anschluss des Fahrzeugs sowie Öffnen des Ventils der Anschlusseinrichtung,
2. b) Befüllen des Fluidtanks des Fahrzeugs über die Abgabeleitung und die Anschlusseinrichtung mit Fluid aus der Fluidquelle,
3. c) Schließen des Ventils der Anschlusseinrichtung sowie Trennen der Abgabeleitung von dem Anschluss des Fahrzeugs.

As a further aspect of the invention, a method for filling up a vehicle with a fluid using a device configured as described is presented, the vehicle having the connection and a fluid tank connected thereto, and the method comprising the following steps, which are carried out in the order given be performed:

1. a) via the connection device, connecting the delivery line to the connection of the vehicle and opening the valve of the connection device,
2. b) filling the fluid tank of the vehicle with fluid from the fluid source via the delivery line and the connection device,
3. c) Closing the valve of the connection device and separating the delivery line from the connection of the vehicle.

The described advantages and features of the device and the arrangement can be applied and transferred to the method, and vice versa. The device and the arrangement are preferably intended and set up for operation in accordance with the method. The fluid is preferably hydrogen.

Step a) includes the two partial steps of connecting the delivery line via the connection device to the connection of the vehicle and opening the valve of the connection device. The two partial steps can be carried out simultaneously or one after the other.

Step c) includes the two partial steps of closing the valve of the connection device and disconnecting the delivery line from the connection of the vehicle. The two partial steps can be carried out simultaneously or one after the other.

As a further aspect of the invention, a connection device with a socket for connecting a line to a connection is presented, wherein an interior of the connection device can be connected to the line, the connection device comprising a valve and a valve drive coupled to the valve, the socket being connected to is open at a first end and is connected at a second end to the interior of the connecting device via the valve,
wherein the valve and the valve drive are arranged at a distance from one another on a main axis of the connecting device and are mechanically coupled to one another via a rod formed along the main axis, the rod having a plurality of rod sections, a first of the rod sections being arranged closer to the valve than a second of the slugs, and wherein the first slug has a higher thermal conductivity than the second slug.

The described advantages and features of the device, the arrangement and the method can be applied and transferred to the connecting device, and vice versa. The connection device is preferably designed like the connection device of the device described.

The device, the arrangement and the method were described in particular using the example that a vehicle is refueled with liquid hydrogen. However, the invention is neither limited to the use of hydrogen or fluid in general, nor to the refueling of a vehicle or the filling of a tank in general. In fact, the connection device described can always be used when two lines are to be connected to one another. For example, an industrial plant can have a pipeline in which a liquid or gaseous substance is transported. If the substance from this pipeline is to be supplied to a production process, the substance can be introduced via the line from the pipeline into a connection of a production machine in which the substance is used for the process. In this case, a tank is not required either upstream or downstream of the connection device and the connection. Rather, the substance can be provided continuously and fed into the process as required. It is also possible to use intermediate stations. For example, a substance can be filled via the connection device described from a storage tank into an intermediate store and from there into a tank of a vehicle in a different way.

In general, a distinction can be made between stationary and mobile tanks. An example of a stationary tank is a storage tank at a gas station. An example of a portable tank is a tank of a vehicle. With the connection device described can locally fixed and/or mobile tanks can be connected in any combination.

The invention is also not limited to a specific flow direction of a medium through the connection device and the connection. If the connection device and the connection are connected to one another, the coupling formed in this way can be flowed through in both directions.

• 1: eine schematische Darstellung einer erfindungsgemäßen Anordnung,
• 2: eine perspektivische Darstellung der erfindungsgemäßen Anschlusseinrichtung aus 1,
• 3: eine seitliche Schnittdarstellung der erfindungsgemäßen Anschlusseinrichtung aus den 1 und 2,
• 4: eine seitliche Schnittdarstellung der erfindungsgemäßen Anschlusseinrichtung aus den 1 bis 3 mit dem Anschluss aus 1,
• 5: eine seitliche Schnittdarstellung eines Teils der erfindungsgemäßen Anschlusseinrichtung aus den 1 bis 4,
• 6a und 6b: ein frontale und eine seitliche Schnittdarstellung eines Teils der Anschlusseinrichtung aus den 1 bis 5,
• 7: eine seitliche Schnittdarstellung eines Anschlusses, an welchen die erfindungsgemäße Anschlusseinrichtung aus den 1 bis 5 angeschlossen werden kann,
• 8a und 8b: eine seitliche Schnittdarstellung eines Teils des Anschlusses aus 7 in zwei verschiedenen Stellungen,
• 9: eine Frontalansicht eines Ventilstempels des Ventils des Anschlusses aus 7,
• 10: ein Set umfassend den Anschluss aus 7 sowie ein Schraubwerkzeug,
• 11a und 11b: eine Frontalansicht und eine seitliche Schnittdarstellung des Schraubwerkzeugs aus 10.

The invention is explained in more detail below with reference to the figures. The figures show a particularly preferred embodiment to which the invention is not limited. The figures and the proportions shown therein are only schematic. Show it:

• 1 : a schematic representation of an arrangement according to the invention,
• 2 : a perspective representation of the connection device according to the invention 1 ,
• 3 : a lateral sectional view of the connecting device according to the invention from FIGS 1 and 2 ,
• 4 : a lateral sectional view of the connecting device according to the invention from FIGS 1 until 3 with the connector off 1 ,
• 5 : a lateral sectional view of part of the connection device according to the invention from FIGS 1 until 4 ,
• 6a and 6b : a frontal and a lateral sectional view of a part of the connecting device from FIGS 1 until 5 ,
• 7 : a lateral sectional view of a connection to which the connection device according to the invention from the 1 until 5 can be connected
• 8a and 8b : a side sectional view of part of the connector 7 in two different positions
• 9 : a frontal view of a valve stem of the valve of the connector 7 ,
• 10 : a set comprising the connector 7 as well as a screwdriver
• 11a and 11b : a front view and a side sectional view of the screwing tool 10 .

1 shows an arrangement 3 with a device 2 for introducing a fluid into a connection 100. The connection 100 is connected to a fluid tank 1 of a vehicle 4, which is also part of the arrangement 3 shown. The device 2 has a fluid source 200, a delivery line 201 and an at least partially vacuum-insulated connection device 202 for connecting the delivery line 201 to the connection 100. The delivery line 201 has a first end 203 on the fluid source 200 and a second end 204 on an interior space 205 of the connection device 202 connected.

1. a) über die Anschlusseinrichtung 202 Anschließen der Abgabeleitung 201 an den Anschluss 100 des Fahrzeugs 4 sowie Öffnen eines (insbesondere in 5 gezeigten) Ventils 206 der Anschlusseinrichtung 202,
2. b) Befüllen des Fluidtanks 1 des Fahrzeugs 4 über die Abgabeleitung 201 und die Anschlusseinrichtung 202 mit Fluid aus der Fluidquelle 200,
3. c) Schließen des Ventils 206 der Anschlusseinrichtung 202 sowie Trennen der Abgabeleitung 201 von dem Anschluss 100 des Fahrzeugs 4.

The device 2 can be used to refuel the vehicle 4 with a fluid. The procedure includes the following steps, which are carried out in the order given:

1. a) via the connection device 202 connecting the delivery line 201 to the connection 100 of the vehicle 4 and opening a (in particular in 5 shown) valve 206 of the connection device 202,
2. b) filling the fluid tank 1 of the vehicle 4 via the delivery line 201 and the connection device 202 with fluid from the fluid source 200,
3. c) Closing the valve 206 of the connection device 202 and disconnecting the delivery line 201 from the connection 100 of the vehicle 4.

2 shows the connection device 202 of the device 2 1 in a perspective view. Part of the delivery line 201 is also shown. It can be seen that the connection device 202 has a connection piece 208 which can be connected to the connection 100 . For this purpose, the socket 208 is open at a first end 209 . Furthermore, a valve drive 207 can be seen, with which the valve 206 can be actuated. A latching element 274 is also shown, with which the connection device 202 can be latched to the connection 100 .

3 shows the connecting device 202 from FIGS 1 and 2 in a lateral sectional view. A part of the discharge line 201 can also be seen here. The connecting device 202 comprises the valve 206 and the pneumatic valve drive 207 coupled to the valve 206. The connecting piece 208 of the connecting device 202 is also shown. The socket 208 is open at a first end 209 and is connected at a second end 210 via the valve 206 to the interior 205 of the connecting device 202 . Furthermore, the connecting device 202 has a first sleeve 261 and a second sleeve 264, which with respect to 5 be described in more detail. The locking element 274 is also in 3 drawn.

The valve 206 and the valve drive 207 are arranged at a distance from one another on a main axis 211 of the connection device 202 . The Delivery line 201 and the main axis 211 of the connection device 202 enclose an angle 212 in the range of 30 to 60° such that a distance between the delivery line 201 and the main axis 211 of the connection device 202 when viewed in a direction pointing from the valve drive 207 to the valve 206 direction decreased. At its second end 204 , the dispensing line 201 has a tube 220 which is formed in one piece with a boundary 221 of the interior space 205 of the connecting device 202 . An intermediate space 258 between the boundary 221 and a housing 250 of the connection device 202 is vacuum-insulated.

The valve drive 207 has a cylinder 214 and a piston 215 arranged therein. The piston 215 can be moved pneumatically along the main axis 211 of the connection device 202 .

The interior 205 of the connecting device 202 is arranged in a housing 250 of the connecting device 202, the housing 250 having a compensation element 251 for reducing thermal stresses. The compensating element 251 comprises a bellows 252. An axis 253 of the bellows 252 coincides with the main axis 211 of the connecting device 202. The compensating element 251 is arranged between the valve drive 207 and an opening 257 of the delivery line 201 into the interior space 205 of the connection device 202 .

The housing 250 has a first housing section 254 and a second housing section 255 which overlap in an overlap area 256 . The bellows 252 is formed in the overlapping area 256 on the second housing section 255 .

The valve 206 has a valve body 259 , a valve plunger 216 and a valve opening 219 . The valve plunger 216 is movable along a valve axis 232 coinciding with the main axis 211 of the connection device 202 between a first end position 217 (not shown here) and a second end position 218 (shown here).

The valve 206 and the valve drive 207 are mechanically coupled to one another via a multi-part rod 213 formed along the main axis 211 . The rod 213 has several rod sections 242,243,244,245. A first of the rod sections 242 is arranged closer to the valve 206 than a second of the rod sections 243 . The first rod portion 242 has a higher thermal conductivity than the second rod portion 243. The second rod portion 243 is hollow. The first rod section 242 and the second rod section 243 are connected to one another by means of a plug connection 246 .

Between the valve drive 207 and the second rod section 243, the rod 213 also has a third rod section 244, which has a bellows 247 for sealing.

Between the valve drive 207 and the second rod section 243 , the rod 213 also has a fourth rod section 245 which has an adjusting element 248 for adjusting a length of the rod 213 .

The valve drive 207 is held on the housing 250 of the connecting device 202 by a screw connection 249 . The rod 213 and the valve 206 can be removed from the housing 250 when the screw connection 249 is loosened.

4 shows a lateral sectional view of the connecting device 202 from FIGS 1 until 3 with port 100 out 1 . In particular, the discharge line 201, the valve 206, the valve drive 207 and the rod 213 between the valve 206 and the valve drive 207 are shown. On the side of the fluid tank 1, a valve 101 is also shown, which has a first valve stem 110 and a second valve stem 111.

5 shows the connection device 202 of the device 2 1 until 4 in a more detailed perspective view. The valve 206 in particular can be seen. The valve 206 has the valve plunger 216 and the valve opening 219 . The valve plunger 216 closes the valve opening 219 in its second end position 218. The valve 206 also has a cylinder spring 233 which is held on the valve plunger 216 on the one hand and on the other hand radially outside the valve opening 219 on a boundary 221 of the interior 205 of the connection device 202 in such a way that that the cylinder spring 233 prestresses the valve stem 216 in its second end position 218.

The valve stem 216 has a valve disk 234 and a valve stem 235 connected thereto. In its second end position 218 (shown here), the valve stem 216 closes the valve opening 219 with the valve disk 234. A flow path 240 from the interior 205 of the connecting device 202 through the valve opening 219 is released when the valve stem 216 is outside of its second end position 218. The flow path 240 runs through a jacket 241 of the cylinder spring 233. The valve stem 235 is arranged inside the cylinder spring 233. FIG.

The valve plunger 216 has a flange 236 which runs around the valve axis 232 and via which the cylinder spring 233 is held on the valve plunger 216 . The flange 236 of the valve stem 216 has a plurality of recesses 238 lying radially on the outside, with which a respective passage 239 is formed between the flange 236 and the boundary 221 of the interior 205 of the connecting device 202 .

The second end position 218 of the valve stem 216 shown is arranged closer to the interior 205 of the connecting device 202 than the first end position 217 of the valve stem 216. The valve stem 216 is partly arranged inside the valve body 259 and protrudes at least in its first end position 217 into the socket 208 .

The connecting device 202 has an outer wall 260 running around a main axis 211 of the connecting device 202 . Furthermore, the connecting device 202 has a first sleeve 261 and a second sleeve 264, which are each formed to run around the outer wall 260 and which each have a receptacle 269 running around the main axis 211 on a respective first side 262, 265 facing the socket 208 with the outer wall 260 for a (in 7 shown) terminal end 135 of terminal 100 limit. The second sleeve 264 is set up to fix the connection 100 to the connection device 202 . The second sleeve 264 is at least partially arranged radially outside of the first sleeve 211 . The sleeves 261, 264 are more detailed in FIGS 6a and 6b shown.

A first annular gap 267 is formed between the outer wall 260 and the first sleeve 261 and is connected to the receptacle 269 for the connection end 135 of the connection 100 and to a flushing device 270 of the device 2 . The first sleeve 261 is connected locally to the outer wall 260 in such a way that the first annular gap 267 is closed on a second side 263 of the first sleeve 261 .

A second annular gap 268 is formed between the first sleeve 261 and the second sleeve 264, which is connected to the receptacle 269 for the connection end 135 of the connection 100 and to a measuring device 273 for detecting the fluid. The second sleeve 264 is connected locally to the first sleeve 261 in such a way that the second annular gap 267 is closed on a second side 266 of the second sleeve 264 .

The connecting device 202 also has a first seal 271 which is designed to run around the main axis 211 of the connecting device 202 and which is arranged between the receptacle 269 and the first sleeve 261 .

The connection device 202 also has a second seal 272 which is designed to run around the main axis 211 of the connection device 202 and which is arranged between the receptacle 269 for the connection end 135 of the connection 100 and the second sleeve 264 .

The connecting piece 208 is delimited at its second end 210 by the valve body 259 of the valve 206 . The socket 208 has a first socket section 222 , a second socket section 223 and a seal 225 running around an axis 224 of the socket 208 . The first end 209 of the stub 208 is formed on the first stub portion 222 and a second end 210 of the stub 208 is formed on the second stub portion 223 . The first nozzle section 222 is formed as an annular cap 228 . The first socket section 222 and the second socket section 223 are connected to one another by a screw connection 226 in such a way that the seal 225 is held by the first socket section 222 and the second socket section 223 . The screw connection 226 is coaxial with the axis 224 of the socket 208 . The first socket section 222 and the second socket section 223 overlap at least where the screw connection 226 is formed. The screw connection 226 is formed by a first thread 229 on an inside 227 of the first socket section 222 and by a second thread 230 on an outside 231 of the second socket section 223 . The seal 225 protrudes in the direction of the axis 224 of the socket 208 beyond an inner side 227 of the socket 208 .

The second socket section 223 is at least partially double-walled. The second socket section 223 is at least partially vacuum-insulated together with the boundary 221 of the interior space 205 of the connecting device 202 .

6a and 6b show a frontal and a lateral sectional view of part of the connecting device 202 from FIGS 1 until 5 . The rod 213, the outer wall 260, the first sleeve 261, the second sleeve 264, the first annular gap 267, the second annular gap 268, the flushing device 270 and the measuring device 273 can be seen.

• - einem Ventilraum 102, welcher umlaufend durch eine Mantelwand 103 begrenzt ist, welcher an einer ersten Stirnseite 104 eine erste Ventilöffnung 106 aufweist und welcher an einer zweiten Stirnseite 105 über eine Anschlussöffnung 108 mit einem Innenraum 109 des Fluidtanks 1 verbunden ist,
• - einen ersten Ventilstempel 110, welcher innerhalb des Ventilraums 102 angeordnet ist, welcher entlang einer Ventilachse 118 zwischen einer (hier gezeigten) ersten Endposition 112 und einer zweiten Endposition 113 beweglich ist, und welcher in seiner ersten Endposition 112 die erste Ventilöffnung 106 verschließt,
• - eine erste Kegelfeder 114, welche den ersten Ventilstempel 110 in dessen erste Endposition 112 vorspannt und welche einen Querschnitt hat, der sich in einer Richtung von der ersten Stirnseite 104 zur zweiten Stirnseite 105 des Ventilraums 102 vergrößert.

7 shows a connection 100 for a fluid tank 1, to which the connection device 202 from the 1 until 5 can be connected. The port 100 includes a valve 101 with:

• - A valve chamber 102, which is delimited circumferentially by a jacket wall 103, which at a first end face 104 has a first valve opening 106 and which is connected on a second end face 105 via a connection opening 108 to an interior space 109 of the fluid tank 1,
• - a first valve plunger 110, which is arranged inside the valve chamber 102, which is movable along a valve axis 118 between a first end position 112 (shown here) and a second end position 113, and which in its first end position 112 closes the first valve opening 106,
• - A first conical spring 114, which biases the first valve stem 110 in its first end position 112 and which has a cross section which increases in a direction from the first end face 104 to the second end face 105 of the valve chamber 102.

The shell wall 103 is coaxial with the first valve stem 110 . A flow path 116 through the first valve opening 106 into the interior 109 of the fluid tank 1 is released when the first valve plunger 110 is outside of its first end position 112 . The flow path 116 runs through a jacket 136 of the first conical spring 114.

The valve 101 has a first valve body 123 and a second valve body 124 which are each formed to run around the valve axis 118 . The connection also has a receptacle 134 in which the second valve body 124 is held in the assembled state.

The connection 100 also has a wall 117 running around the valve 101 which is spaced apart from the valve 101 at least in a section along the valve axis 118 by an annular gap 119 .

• - einen zweiten Ventilstempel 111, welcher innerhalb des Ventilraums 102 zwischen der zweiten Stirnseite 105 des Ventilraums 102 und der Zwischenwand 122 angeordnet ist, welcher zwischen einer (hier gezeigten) ersten Endposition 112 und einer zweiten Endposition 113 beweglich ist, und welcher in seiner ersten Endposition 112 die zweite Ventilöffnung 107 verschließt,
• - eine zweite Kegelfeder 115, welche innerhalb des Ventilraums 102 zwischen der zweiten Stirnseite 105 des Ventilraums 102 und der Zwischenwand 122 angeordnet ist, welche den zweiten Ventilstempel 111 in dessen erste Endposition 112 vorspannt und welche einen Querschnitt hat, der sich in einer Richtung von der ersten Stirnseite 104 zur zweiten Stirnseite 105 des Ventilraums 102 vergrößert.

The valve chamber 102 is divided between the first end face 104 and the second end face 105 by an intermediate wall 122 . The intermediate wall 122 has a second valve opening 107 . The first valve plunger 110 and the first conical spring 114 are arranged between the intermediate wall 122 and the first end face 104 of the valve chamber 102 . Valve 101 also has:

• - a second valve plunger 111, which is arranged within the valve chamber 102 between the second end face 105 of the valve chamber 102 and the intermediate wall 122, which is movable between a first end position 112 (shown here) and a second end position 113, and which in its first end position 112 closes the second valve opening 107,
• - a second conical spring 115, which is arranged within the valve chamber 102 between the second end face 105 of the valve chamber 102 and the intermediate wall 122, which biases the second valve stem 111 into its first end position 112 and which has a cross-section which extends in a direction from the first end face 104 to the second end face 105 of the valve chamber 102 increases.

The first conical spring 114 is held radially outside of the second valve opening 107 on the jacket wall 103 and on the intermediate wall 122 . The second conical spring 115 is held radially outside of the connection opening 108 on the jacket wall 103 and on the second end face 105 of the valve chamber 102 .

1. a) Anschließen der Abgabeleitung 201 an den Anschluss 100 sowie Öffnen des Ventils 101,
2. b) Befüllen des Innenraums 109 des Fluidtanks 1 über den Anschluss 100 mit Fluid aus der Abgabeleitung 201,
3. c) Schließen des Ventils 101 und Abnehmen der Abgabeleitung 201 von dem Anschluss 100.

With the connection 100 shown, a method for refueling a vehicle 4 can be carried out, which comprises the following steps, which are carried out in the order given:

1. a) connecting the delivery line 201 to the connection 100 and opening the valve 101,
2. b) filling the interior 109 of the fluid tank 1 via the connection 100 with fluid from the delivery line 201,
3. c) Close valve 101 and disconnect delivery line 201 from port 100.

The steps a) to c) described here can each be carried out simultaneously with the corresponding one of the steps a) to c) of the method, which is associated with 1 was described.

The 8a and 8b show the valve 101 in two different positions. The first valve plunger 110 and the second valve plunger 111 are each shown in their first end position 112 ( 8a) and in its second end position 113. The first valve opening 106, the second valve opening 107 and the connection opening 108 are shown.

The valve 101 has a valve body 123 which runs around the valve axis 118 and which is held in a mounted state by a first screw connection 125 which is coaxial to the valve axis 118 . Furthermore, the valve 101 has the second valve body 124, which is designed to run around the valve axis 118, on which the first valve body 123 is held in the assembled state via the first screw connection 125 and which is held via a second screw connection 126.

The first valve body 123 has a flange 127 running around the valve axis 118, in which a plurality of engagements 128 for a respective engagement element 600 of a (in the 9 , 10a and 10b shown) screwing tool 6 are provided, so that the first screw connection 125 can be formed and loosened by the screwing tool 6 being rotated about the valve axis 118, while the engagement elements 600 of the screwing tool 6 engage in the corresponding engagements 128 of the first valve body 123. The engagements 128 of the first valve body 123 are each formed as a through hole 129 with an axis 130 aligned parallel to the valve axis 118 .

The second valve body 124 has a plurality of engagements 128 for each of the engagement elements 600 of the screwing tool 6, so that the second screwed connection 126 can be formed and released by the screwing tool 6 being rotated about the valve axis 118 while the engagement elements 600 of the screwing tool 6 in the corresponding interventions 128 of the second valve body 124 engage. The engagements 128 of the second valve body 123 are each formed as a through hole 129 with an axis 130 aligned parallel to the valve axis 118 . The second valve body 124 has a flange 127 running around the valve axis 118, in which the engagements 128 of the second valve body 124 are formed.

A seal 133 running around the valve axis 118 is arranged on a first side 131 and on a second side 132 of the flange 127 of the second valve body 124 .

9 shows the first valve stem 110 in a front view. It can be seen that the first valve stem 110 has a plurality of recesses 120 lying radially on the outside, with which a respective passage 121 is formed between the first valve stem 110 and the jacket wall 103 .

10 shows a set 5 comprising the fluid tank 1 7 as well as the screwing tool 6.

11a and 11b show a front view and a side sectional view of the screwing tool 6 from 10 . The screwing tool 6 has a hollow cylinder body 601 which has the engagement elements 600 on a first end face 602 . The engaging elements 600 are projections which protrude beyond the first end face 602 of the cylinder body 601 in a direction parallel to an axis 604 of the cylinder body 601 . A second end face 603 of the cylinder body 601 is also shown.

Reference List

1

fluid tank

2

contraption

3

arrangement

4

vehicle

5

set

6

screw tool

100

Connection

101

Valve

102

valve space

103

coat wall

104

first face

105

second face

106

first valve opening

107

second valve opening

108

port opening

109

inner space

110

first valve stamp

111

second valve stem

112

first end position

113

second end position

114

first cone spring

115

second cone spring

116

flow path

117

Wall

118

valve axis

119

annular gap

120

recess

121

passage

122

partition

123

first valve body

124

second valve body

125

first screw connection

126

second screw connection

127

flange

128

intervention

129

through hole

130

axis

131

first page

132

second page

133

poetry

134

Recording

135

connection end

136

Coat

200

fluid source

201

delivery line

202

connection device

203

first end

204

second end

205

inner space

206

Valve

207

valve drive

208

Support

209

first end

210

second end

211

main axis

212

angle

213

pole

214

cylinder

215

Pistons

216

valve stamp

217

first end position

218

second end position

219

valve opening

220

Pipe

221

limitation

222

first nozzle section

223

second nozzle section

224

axis

225

poetry

226

screw connection

227

inside

228

annular cap

229

first thread

230

second thread

231

outside

232

valve axis

233

cylinder spring

234

valve plate

235

valve stem

236

flange

238

recess

239

passage

240

flow path

241

Coat

242

first pole section

243

second pole section

244

third bar section

245

fourth pole section

246

connector

247

bellows

248

adjustment element

249

screw connection

250

Housing

251

compensation element

252

bellows

253

axis

254

first housing section

255

second housing section

256

overlap area

257

mouth

258

space

259

valve body

260

outer wall

261

first sleeve

262

first page

263

second page

264

second sleeve

265

first page

266

second page

267

first annular gap

268

second annular gap

269

Recording

270

flushing device

271

first seal

272

second seal

273

measuring device

274

latching element

600

engagement element

601

cylinder body

602

first face

603

second face

604

axis

Claims (10)

Device (2) for introducing a fluid into a connection (100), comprising - a fluid source (200), - a delivery line (201), and - an at least partially vacuum-insulated connection device (202) with a socket (208) for connecting the delivery line (201) to the connection (100), wherein the delivery line (201) is connected with a first end (203) to the fluid source (200) and with a second end (204) to an interior space (205) of the connection device (202), the connection device (202) having a valve ( 206) and a valve drive (207) coupled to the valve (206), wherein the socket (208) is open at a first end (209) and at a second end (210) via the valve (206) with the interior ( 205) is connected to the connecting device (202), wherein the valve (206) and the valve drive (207) are arranged at a distance from one another on a main axis (211) of the connecting device (202) and are mechanically coupled to one another via a rod (213) formed along the main axis (211), the rod ( 213) has a plurality of rod sections (242,243,244,245), a first of the rod sections (242) being arranged closer to the valve (206) than a second of the rod sections (243), and the first rod section (242) having a higher thermal conductivity than the second the rod section (243). Device (2) after claim 1 , wherein the first rod section (242) and the second rod section (243) are connected to one another by means of a plug connection (246). A device (2) according to any one of the preceding claims, wherein the second rod portion (243) is hollow. Apparatus (2) according to any one of the preceding claims, wherein the first rod section (242) is directly connected to the valve (206). Apparatus (2) according to any one of the preceding claims, wherein the rod (213) between the valve driver (207) and the second rod section (243) further comprises a third rod section (244) having a bellows (247) for sealing. Device (2) according to any one of the preceding claims, wherein the rod (213) between the valve drive (207) and the second rod section (243) further comprises a fourth rod section (245) which has an adjusting element (248) for adjusting a length of the rod (213). Device (2) according to one of the preceding claims, wherein the valve drive (207) is held by a screw connection (249) on a housing (250) of the connecting device (202), and wherein the rod (213) and the valve (206) are made of can be removed from the housing (250) when the screw connection (249) is loosened. Arrangement (3) comprising a device (2) according to one of the preceding claims and the connection (100) and a fluid tank (1) connected thereto, the connection device (202) of the device (2) being connected to the connection (100). Method for refueling a vehicle (4) with a fluid using a device (2) according to one of Claims 1 until 7 , wherein the vehicle (4) has the connection (100) and a fluid tank (1) connected thereto, and wherein the method comprises the following steps, which are carried out in the order given: a) via the connection device (202) connecting the delivery line (201) to the connection (100) of the vehicle (4) and opening the valve (206) of the connection device (202), b) filling the fluid tank (1) of the vehicle (4) via the delivery line (201) and the connection device ( 202) with fluid from the fluid source (200), c) closing the valve (206) of the connection device (202) and separating the delivery line (201) from the connection (100) of the vehicle (4). Connection device (202) with a socket (208) for connecting a line (201) to a connection (100), an interior (205) of the connection device (202) being able to be connected to the line, the connection device (202) having a valve ( 206) and a valve drive (207) coupled to the valve (206), wherein the socket (208) is open at a first end (209) and at a second end (210) via the valve (206) with the interior ( 205) of the connecting device (202), wherein the valve (206) and the valve drive (207) are arranged at a distance from one another on a main axis (211) of the connecting device (202) and are connected via a rod (213 ) mechanically with each other are coupled, the rod (213) having a plurality of rod sections (242,243,244,245), a first of the rod sections (242) being arranged closer to the valve (206) than a second of the rod sections (243), and the first rod section (242) has a higher thermal conductivity than the second of the rod section (243).

Images