Filling head that prevents premature nozzle closure

Abstract

The present invention relates to a filling head (13) for a storage system (1), the filling head comprising a body (15) which is mounted inclined at a predetermined angle (α) with respect to the direction of gravity (G), called the filling direction (F), and the body comprising a main part (17) closed by a cover part (19) to form a cavity (20) in which a separating device (21) is received. The filling head (13) is configured to receive, in a cylindrical wall (23) of the separating device (21) extending around the filling direction (F), a dispensing nozzle for a fluid, the nozzle having automatic stop sensors (39a, 39b) to prevent overfilling of the filling head (13). The separating device (21) is arranged to improve the separation of the flow (V) from the vent line and the flow (F) to the filling line. According to the invention, the filling head (13) further comprises a buffer volume (12) integral with the main part (17) in a rear part (B) of the body (15) to reduce the speed of the flow (V) from the vent line (11); and the cylindrical wall (23) comprises at least one recess (31) facing an opening of the buffer volume (12) in the rear part (B) of the body (15). The cylindrical wall (23) guides any fluid emerging from the nozzle along a front part (P) of the body (15) which is located in a direction opposite to the rear part (B) with respect to the filling direction (F), to ensure a laminar flow (F) of the fluid emerging from the nozzle towards the filling line (9) in the front part (P) of the body (15), and to ensure that the fluid from the vent line (11) is discharged directly through the cylindrical wall (23) in the rear part (B) of the body (15), thus allowing limitation of the closing of any fluid dispensing during a refilling phase.

Description

Technical Field

[0001] The present invention relates to a filling head that prevents an automatic nozzle from closing prematurely during refilling of a fluid tank, such as an automotive tank, i.e., there is no flow stop until the tank is full during the refilling phase. Background Art

[0002] Regulations regarding vehicle and truck emissions specifically provide for reducing the release of nitrogen oxides NO into the atmosphere. x One known way to achieve this goal is to use the "SCR" (the term "Selective Catalytic Reduction" is an abbreviation for Selective Catalytic Reduction) method, which can reduce nitrogen oxides by injecting a reducing agent (such as ammonia) into the exhaust pipeline. Generally, an SCR system includes a tank for storing an aqueous additive such as a urea solution, a pump for transporting the aqueous additive in a feed pipeline, and a device for metering the required amount of the aqueous additive and injecting it into the exhaust pipeline. Thus, the aqueous additive is precisely metered and injected into the exhaust gas stream, where the aqueous additive is hydrolyzed before converting nitrogen oxides (NO x ) into nitrogen (N2) and water (H2O).

[0003] Sometimes called the distribution of urea solution has been known for trucks for many years. Since tank volume is important in the truck field, a distribution system separated from fuel delivery has been developed, which has a filling rate of 40 l / min -1 and a tank with a large inlet diameter.

[0004] Regarding passenger cars, the initial market requirement was to design a filling head compatible with manual filling using a screw-top bottle. This filling is usually carried out at a slow speed of about 3 l / min -1 by gravity. However, due to more stringent anti-pollution levels leading to an increase in the consumption of urea solution, it has become more common to refill the urea solution tank regularly. However, consumers have noticed that they may have obtained distribution devices for trucks, and thus, different from what was expected, they have to use a unique delivery rate.

[0005] Therefore, automotive manufacturers now require the design of an SCR system that is compatible with both automatic filling technology initially designed for heavy-duty applications and manual filling. Known filling heads are disclosed in documents WO 2019 / 149750 and US 2017 / 036533.

[0006] In addition, three automatic filling technologies are mainly used at present, specifically depending on the sensors included in the nozzle (ZVA nozzle sensor, Horn nozzle sensor or PIUSI nozzle sensor). Although each sensor is not installed at the tip of the nozzle (such as the ZVA nozzle), it can also be installed in the upstream direction of the nozzle (such as the Horn and PIUSI nozzle sensors), up to 16 mm away from the tip.

[0007] Therefore, no matter which sensor is used in the nozzle, many conflicting specifications must be met, such as the small diameter of the existing screw-neck bottle and a high filling rate of up to 40 l / min. -1 of the high filling rate. Summary of the Invention

[0008] The present invention aims to provide a filling head that meets these conflicting specifications and has no fluid distribution shutdown / failure until the storage tank is actually full during the refilling stage.

[0009] Therefore, the present invention relates to a filling head for a storage system, the filling head comprising a body that is tilt-mounted at a predetermined angle relative to the direction of gravity, which is referred to as the filling direction, and comprising a main part that is enclosed by a cover part to form a cavity in which a separation device is received. The filling head is configured to receive a fluid distribution nozzle in a cylindrical wall of the separation device that extends around the filling direction. The filling head is configured to be connected to a filling pipeline and a venting line of a fluid storage tank, and the separation device is arranged to improve the separation of the flow from the venting line and the flow to the filling pipeline. It is characterized in that the filling head further comprises a buffer volume integrated with the main part in the rear part of the body to reduce the velocity of the flow from the venting line, and in that the cylindrical wall comprises at least one recess that faces an opening of the buffer volume in the rear part of the body. The cylindrical wall guides any fluid coming out of the nozzle along the front part of the body that is located in a direction opposite to the rear part relative to the filling direction to ensure:

[0010] - The laminar flow of the fluid coming out of the nozzle flows towards the filling pipeline in the front part of the body, and

[0011] - The fluid from the venting line is directly discharged through the cylindrical wall in the rear part of the body,

[0012] Thereby allowing to limit any fluid distribution shutdown / failure during the refilling stage.

[0013] According to the present invention, this buffer volume can thus be as far away as possible from the storage tank. Advantageously, the present invention allows for a better reduction in the velocity of the flow from the bleed line, as well as better bursting of the bubbles along the walls of the buffer volume, regardless of the volume of the storage tank and / or the refilling rate. Moreover, with the help of the separation device, between the flow of the fluid emerging from the nozzle in the front part of the cavity in the body and the flow of the fluid from the bleed line in the rear part of the cavity in the body, these flows are advantageously better separated in the cavity to avoid activating the stop function of the dispensing nozzle until the storage tank is actually full.

[0014] The present invention may also include one or more of the following optional features, either alone or in combination.

[0015] The lowermost half of the cylindrical wall, when considering the direction of gravity, has no through recess on the outer surface facing the front part of the body, downstream of the nozzle when considering the filling direction, to ensure a laminar flow of the fluid from the nozzle received in the cylindrical wall towards the filling line. In other words, due to gravity and due to the predetermined angle of the body with respect to the direction of gravity, the fluid emerging from the nozzle flows along the inner diameter of the cylindrical wall towards the filling line without encountering any irregularities, such as any protrusions or recesses, thus allowing for a better guiding of the fluid towards the filling line.

[0016] The separation device also includes at least one flange that projects laterally from the outer surface of the cylindrical wall and is mounted in the cavity upstream of the recess facing the opening of the buffer volume when considering the filling direction, to limit the mixing of the fluid emerging from the nozzle with the fluid from the bleed line, thus improving the operation of the sensor. Thus, the flange forms a dead volume between its upper part and the cover part to form an additional volume for storing, if possible, the fluid emerging from the nozzle that has been slowed down by contact with the flange, so as to deflect this flow with respect to the flow from the bleed line. Thus, the operation of the nozzle is significantly improved because the sensor can sense the fluid pressure in the filling head more quickly, and there is no shut-off / failure of fluid dispensing during the refilling phase until the storage tank is actually full.

[0017] The cover part may include a projecting guiding element to guide the dispensing nozzle towards the separation device, thus allowing for better mechanical protection of the cylindrical wall. Preferably, when the nozzle is not received in the separation device, the projecting guiding element is sealed by the lid.

[0018] The separation device is preferably detachable so that it can be replaced. The separation device can thus be replaced with different geometries to adapt to other types or sizes of nozzles and / or storage tanks.

[0019] The cylindrical wall preferably further includes at least one hole that allows the airflow from the vent line to pass through the cylindrical wall so as to be discharged outside the filling head. This allows for more reliable filling by discharging the air in the storage tank outside the filling head, thereby allowing the fluid coming out of the nozzle to flow more freely through the filling line into the storage tank.

[0020] According to the first example, the cover part can be fastened to the main part in a sealed manner by welding. Therefore, only welding is used in the manufacturing process, which can improve the cycle time and related costs.

[0021] According to the second example, the cover part can be fastened to the main part in a sealed manner by snap-fitting a sealing ring between the cover part and the main part. Therefore, the manufacturing process can avoid using the welding step, making the process easier.

[0022] The present invention relates to a storage system that includes a fluid storage tank connected to a filling line and a vent line. The filling line is configured to guide the gravity flow of the fluid from the filling head to the storage tank, and the vent line is configured to compensate for the pressure change in the storage tank. It is characterized in that the storage system further includes a filling head according to any one of the foregoing embodiments. Description of the Drawings

[0023] Other features and advantages of the present invention will become clearer when reading the following detailed description, which is made with reference to the drawings provided as non-limiting depictions, in which:

[0024] - Figure 1 is a top view schematic diagram of a vehicle in which the present invention can be applied;

[0025] - Figure 2 is a perspective view of a filling head according to the present invention;

[0026] - Figure 3 is along Figure 2 the cross-sectional view of plane III-III;

[0027] - Figure 4 and Figure 5 are perspective views of a separation device according to the present invention. Detailed Description of the Embodiments

[0028] In the respective drawings, the same or similar elements have the same reference numerals, optionally with indices added. Therefore, the description of their structures and functions is not systematically repeated.

[0029] Hereinafter, the orientation is the normal orientation of a motor vehicle. In particular, the terms "upper", "lower", "left", and "right" are placed above and below, forward and backward with respect to the drawing directions.

[0030] It should be understood that the terms used in this way are interchangeable where appropriate, and the embodiments of the invention described herein allow operation in other directions than those described or illustrated herein.

[0031] It should be noted that the term "comprising" used in the claims should not be construed as being limited to the means listed thereafter; it does not exclude other elements or steps. Thus, it should be interpreted as specifying the presence of the recited features, integers, steps or components, but not precluding the presence or addition of one or more other features, integers, steps or components or groups thereof. Thus, the scope of the expression "apparatus comprising means A and B" should not be limited to apparatuses consisting only of components A and B. It means that, for the purposes of the present invention, the only relevant components of the apparatus are A and B.

[0032] The term "storage tank" is understood to mean an impermeable storage tank for storing fluids in a variety of common environments and usage conditions. An example is a fuel storage tank for supplying fuel (such as gasoline, diesel, hydrogen, etc.) to a motor vehicle. The term "storage tank" can also be applied to a urea storage tank or a water storage tank.

[0033] The expression "SCR system" is understood to denote a system for catalytically reducing NOx from the exhaust gases of an internal combustion engine, preferably of a vehicle, which uses, for example, an aqueous urea solution as a liquid additive. The present invention is advantageously applied to diesel engines, in particular to diesel engines of passenger cars or heavy goods vehicles.

[0034] Furthermore, the urea dosing nozzle can be incorporated into the fuel filling head. Thus, valves activated by a magnetic field for the dosing nozzle have been developed. Thus, when applied to a urea storage tank, the filling head must have a magnetic element to activate the valve to allow the delivery of urea.

[0035] In the description provided herein, numerous specific details are set forth. However, it should be understood that embodiments of the invention may be practiced without these specific details. In other instances, well-known methods, structures and techniques have not been shown in detail so as not to obscure the understanding of this description.

[0036] As Figure 1 shown, the present invention relates to a vehicle 41 which is equipped with a power system 43 connected to a purification system 45. More precisely, the purification system 45 includes an exhaust device 47 and an additive injection device 49 for injecting an additive such as an aqueous urea solution into the exhaust device 47.

[0037] The injection device 49 includes a storage system 1 which includes a storage tank 3 for storing the aqueous additive. The injection device 49 may also or may not include a plurality of sensors immersed in the aqueous additive, such as a level sensor, a temperature sensor and / or a mass sensor, and the sensors may be of the capacitive effect type, the ultrasonic type or the mechanical type.

[0038] The injection device 49 further includes a pump 5 associated with the injection element 7, which are managed by a processing unit connected to the central computer of the vehicle 41. The processing unit contains a memory storing encoded instructions. When the processing unit executes the encoded instructions, steps of, for example, the SCR method are performed.

[0039] The tank 3 must be refilled with the aqueous additive, such as urea solution or ammonia solution, regularly. The storage system 1 thus includes a filling line 9, a vent line 11 (also called a return line), and a filling head 13. The filling line 9 is configured to direct the gravity flow of the fluid from the filling head 13 to the tank 3. The vent line 11 is configured to compensate for the pressure change in the tank 3 during refilling by discharging such fluid (mainly gas, including air, and possibly also the vapor of the liquid contained in the tank 3) compressed by the arrival of the fluid from the filling line 9 in the tank 3 from the filling head 13.

[0040] Finally, the filling head 13 is configured to receive a nozzle (not shown) of the fluid distribution system and is preferably connected to the filling line 9 and the vent line 11 in a sealed manner. Thus, the filling head 13 allows the fluid coming out of the nozzle to flow into the tank 3 through the filling line 9 during refilling, while allowing the fluid above the liquid present in the tank 3 to be discharged from the tank 3 through the vent line 11 to escape into the ambient air (external atmosphere) around the vehicle 41.

[0041] The present invention aims to provide a filling head that satisfies the above conflicting specifications regardless of the type of sensor used in the nozzle, such as the small diameter of the existing screw - neck bottle and the high filling rate of up to 40 l / min -1 and no fluid distribution shutdown / failure until the tank is actually full during the refilling phase.

[0042] Thus, the filling head 13 according to the present invention includes a body 15, which is mounted at a predetermined angle α (alpha) with respect to the gravity direction G. This predetermined angle α with respect to the gravity direction G is hereinafter referred to as the filling direction F (see Figure 3 ). According to the present invention, when considering the gravity direction G, the predetermined angle α (alpha) can be between 0° and 60°. This angular range allows for good flow by gravity and easy introduction of the dispensing nozzle (not shown) into the filling head 13.

[0043] The filling head 13 includes a main part 17, and the main part 17 is enclosed by a cover part 19 to form a cavity 20. According to the first example, the cover part 19 can be fastened to the main part 17 in a sealed manner by welding. Thus, welding is only used once during the manufacturing process, which allows for improvement of the cycle time and related costs.

[0044] According to a second example, the cover part 19 can be fastened to the main part 17 in a sealed manner by snap-fitting a sealing ring (not shown) between the cover part 19 and the main part 17. Thus, the manufacturing process can avoid using a welding step, making the process easier.

[0045] The cover part 19 may include a protruding guiding element 18 to guide the dispensing nozzle to the separation device 21 (described below), thus allowing better mechanical protection of its cylindrical wall 23. Preferably, when the nozzle is not received in the separation device 21, the protruding guiding element 18 is sealed by tightening a lid (not shown).

[0046] As Figure 3 shown, the cover part 19 may include a magnet 16 circumferentially on the protruding guiding element 18 to activate the valve of the nozzle through a magnetic field when the storage tank 3 is of the urea type, thus allowing the conveyance of urea.

[0047] The main part 17 may include a plurality of ribs 14 to receive the separation device 21 against the upper end of each rib 14. Thus, the separation device 21 can be easily removed from the cavity 20 for replacement. The separation device 21 can thus be replaced with different geometries to accommodate other types or sizes of nozzles and / or storage tanks 3.

[0048] The filling head 13 may also include a buffer volume 12 integral with the main part 17 in the rear part of the body 15 to reduce the velocity of the flow V from the vent line 11. This configuration allows further improvement towards the goal of avoiding any splashing from the filling head. Depending on the type of sensor, the buffer volume 12 is between 80 ml and 140 ml, preferably between 90 ml and 130 ml, more preferably between 94 ml and 129 ml. More precisely, the closer the sensor of the nozzle is to the upstream (when considering the filling direction F), the larger the buffer volume 12.

[0049] According to the present invention, the separation device 21 preferably suspended in the cavity 20 of the body 15 is configured to receive the dispensing nozzle in its cylindrical wall 23 extending around the filling direction F. The separation device 21 is arranged to improve the separation of the flow V from the vent line 11 and the flow F to the filling line 9. Thus, as Figure 3 shown, the sensor 39a (plane I such as the ZVA nozzle sensor) mounted at the tip of the nozzle is lower in the filling head 13 than the 39b (plane II such as the Horn and PIUSI nozzle sensors) in the upstream direction of the nozzle (when considering the filling direction F), and this sensor 39b can be introduced up to 16 mm from the tip.

[0050] According to a first aspect of the invention, the separation device 21 further comprises at least one flange 25 which projects laterally from the outer surface of the cylindrical wall 23 and is mounted in the cavity 20 upstream of the sensor 39a or 39b of the nozzle when the nozzle is received in the cylindrical wall 23 and considering the filling direction F. This configuration of the flange 25 ensures that the fluid coming out of the nozzle present in the filling head 13 has a limited possibility of splashing back from the filling head 13 without affecting the operation of the sensor 39a or 39b.

[0051] According to a first aspect of the invention, the flange 25 forms a dead volume in the cavity 20 between the flange 25 and the upper part of the cover 19 in order to receive the fluids that may pass through before they reach the top part of the cover 19. In other words, the dead volume forms an additional volume in order to store, if possible, the fluids that are slowed down by contact with the flange 25, thus avoiding splashing from the filling head 13 before and during the closing of the nozzle. Consequently, the closing of the nozzle is significantly improved since the sensor is able to sense more quickly the fluid pressure in the filling head 13 without any splashing.

[0052] The flange 25 of the separation device 21 can be mounted between the rear part B of the body 15 and the front part P of the body 15, the front part P being in a direction opposite to the rear part B (when considering the filling direction F). This configuration allows a barrier to be formed substantially above the entire upper surface of the fluid present in the filling head 13. In other words, it makes it more difficult for the fluid to reach the dead volume above the flange 25.

[0053] In a second aspect of the invention, the bleed line 11 is connected to the filling head 13 in the rear part B of the body 15. More precisely, the cylindrical wall 23 comprises at least one recess 31 which faces the opening of the buffer volume 12 in the rear part B of the body 15, and the cylindrical wall 23 guides any fluid coming out of the nozzle along the front part P of the body 15 in order to ensure that the laminar flow F of the fluid coming out of the nozzle flows towards the filling line 9 in the front part P of the body 15, and that the fluid V from the bleed line 11 is discharged directly through the cylindrical wall 23 in the rear part B of the body. Consequently, this configuration allows the limitation of any fluid distribution closing / failure during the refilling phase.

[0054] According to a second aspect of the invention, the buffer volume 12 can thus be as far as possible from the tank 3. Advantageously, a better reduction in the velocity of the flow V from the bleed line 11 is also obtained, as well as a better bursting of the bubbles along the walls of the buffer volume 12, regardless of the volume of the tank 3 and / or the refilling rate. Furthermore, between the flow F of the fluid coming out of the nozzle in the front part P of the cavity 20 in the body 15 and the flow V of the fluid from the bleed line 11 in the rear part B of the cavity 20 in the body 15, the flows F, V are advantageously better separated in the cavity 20 with the help of the separating device 21, so as to avoid activating the stop function of the dispensing nozzle until the tank is actually full.

[0055] The separating device 21 preferably further comprises upper and lower flanges 27, 29 and transverse plates 33a, 33b, each flange 27, 29 being mounted on one side facing the flange 25, and each transverse plate 33a, 33b being mounted between the flanges 25 and 29 and the outer surface of the cylindrical wall 23. The transverse plates 33a, 33b allow for a better separation between the front part P and the rear part B of the body 15.

[0056] Preferably, the lowermost part of the cylindrical wall 23, when considering the direction of gravity G, i.e., the arcuate surface of the cylindrical wall 23, which is parallel to the filling direction F and extends between the transverse plates 33a, 33b over an angle perpendicular to the filling direction F and faces the front part P of the body 15, has no through slots downstream of the flange 25. More generally, when the nozzle is fully received in the cylindrical wall 23 and considering the filling direction F, i.e., when the tip of the nozzle abuts against the upper part of the rib 24 protruding from the inner surface of the cylindrical wall 23 (near the plane I), the lowermost part of the cylindrical wall 23 has no recesses in the planes I and II. This configuration ensures a laminar flow F of the fluid from the nozzle received in the cylindrical wall 23 towards the filling line 9. In other words, due to gravity and due to the predetermined angle of the body 15 with respect to the direction of gravity G, the fluid coming out of the nozzle flows along the inner diameter of the cylindrical wall 23 towards the filling line without encountering any irregularities, such as any protrusions or recesses, thus allowing for a better guiding of the fluid to the filling line.

[0057] The flange 25 of the separation device 21 may include at least one through-hole 26 between the front portion P of the body 15 and the outer surface of the cylindrical wall 23 so as to allow any fluid present above the flange 25, i.e., in the dead volume, to flow by gravity between the front portion P of the body 15 and the cylindrical wall 23. Similarly, the lower flange 29 of the separation device 21 may also include at least one through-hole 30b between the front portion P of the body 15 and the outer surface of the cylindrical wall 23 to allow any fluid flowing from the through-hole 26 due to gravity to further flow between the front portion P of the body 15 and the lower end of the cylindrical wall 23. In other words, due to gravity and due to the predetermined angle of the body 15 with respect to the direction of gravity G, any fluid present in the dead volume can flow between the cylindrical wall 23 and the front portion P of the body through the through-holes 26, 30b to avoid interference with the sensors 39a or 39b.

[0058] To further improve the separation of the flow V from the vent line 11 and the flow F to the filling line 9, the cylindrical wall 23 may further include at least one through-groove 28 between the upper flange 27 and the flange 25.

[0059] Finally, the lower flange 29 may also include at least one hole 30a which is in a direction opposite to the hole 30b when considering the filling direction F and faces the opening of the buffer volume 12 in the rear portion B of the body 15 to improve the direct venting V of the fluid from the vent line 11 through the cylindrical wall 23 in the rear portion B of the body, i.e., to prevent any deviation of the flow V between the buffer volume 12 and the cylindrical wall 23.

[0060] Of course, the present invention is not limited to the embodiments and variations presented, but can be subject to various other embodiments and / or variations which will be apparent to those skilled in the art. Thus, although some embodiments described herein include some but not all of the features included in other embodiments, combinations of features of different embodiments fall within the scope of the present invention and form different embodiments, as will be understood by those skilled in the art. For example, in the appended claims, any claimed embodiment can be used in any combination.

[0061] In particular, the shape and / or dimensions can be modified according to the specific application, in particular according to the type of the tank 3.

Claims

1. A filling head (13) for a storage system (1), the filling head comprising a body (15) which is mounted inclined at a predetermined angle (α) relative to the direction of gravity (G), called the filling direction (F), and the body comprising a main part (17) closed by a cover part (19) to form a cavity (20) in which a separating device (21) is received, the filling head (13) being configured to receive in a cylindrical wall (23) of the separating device (21) extending around the filling direction (F) a dispensing nozzle for a fluid, the nozzle having automatic stop sensors (39a, 39b) to prevent overfilling of the filling head (13), the filling head (13) being configured to be connected to a filling line (9) and a vent line (11) of a fluid reservoir (3), the separating device (21) being arranged to improve the separation of the flow (V) from the vent line (11) from the flow (F) going to the filling line (9), characterized in that, The filling head (13) further comprises a buffer volume (12) integral with the main part (17) in the rear part (B) of the body (15) to reduce the velocity of the flow (V) from the bleed line (11), and in that the cylindrical wall (23) comprises at least one recess (31) facing an opening of the buffer volume (12) in the rear part (B) of the body (15), the cylindrical wall (23) guiding any fluid emerging from the nozzle along the front part (P) of the body (15) in a direction opposite to the rear part (B) with respect to the filling direction (F) to ensure that: - the laminar flow (F) of the fluid emerging from the nozzle flows in the front part (P) of the body (15) towards the filling line (9), and - the flow (V) from the bleed line (11) is discharged directly through the recess (31) of the cylindrical wall (23) in the rear part (B) of the body (15) to be discharged outside the filling head (13) into the ambient air, thereby allowing the closing of any fluid distribution to be restricted during the refilling phase.

2. The filling head (13) according to claim 1, wherein, The lowermost part of the cylindrical wall (23) when considering the direction of gravity (G) has no through slots on the outer surface facing the front part (P) of the body (15) downstream of the nozzle when considering the filling direction (F) to ensure the laminar flow (F) of the fluid from the nozzle received in the cylindrical wall (23) towards the filling line (9).

3. The filling head (13) according to claim 1 or 2, wherein, The separating device (21) further comprises at least one flange (25) protruding laterally from the outer surface of the cylindrical wall (23) and mounted in the cavity (20) upstream when considering the filling direction (F) of the recess (31) facing the opening of the buffer volume (12) to limit the mixing of the fluid emerging from the nozzle with the fluid from the bleed line (11), thereby improving the operation of the sensors (39a, 39b).

4. The filling head (13) according to claim 1 or 2, wherein, The cover part (19) comprises a protruding guiding element (18) to guide the dispensing nozzle to the separating device (21).

5. The filling head (13) according to claim 4, wherein, When the nozzle is not received in the separating device (21), the protruding guiding element (18) is sealed by a lid.

6. The filling head (13) according to claim 1 or 2, wherein, The separating device (21) is detachable so that it can be replaced.

7. The filling head (13) according to claim 1 or 2, wherein, The cover part (19) is fastened to the main part (17) in a sealed manner by welding.

8. The filling head (13) according to claim 1 or 2, wherein, The cover part (19) is fastened to the main part (17) in a sealed manner by snap-fitting a sealing ring between the cover part (19) and the main part (17).

9. A storage system (1) comprising a fluid reservoir (3) connected to a filling line (9) and a vent line (11), the filling line (9) being configured to direct a gravity flow of fluid from a filling head (13) to the reservoir (3), the vent line (11) being configured to compensate for pressure changes in the reservoir (3), characterized in that, The storage system (1) further comprises a filling head (13) according to any one of claims 1 to 8.

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