DE7320590U - Filling line for liquid containers - Google Patents

Description

MOTOR AND TURBINgN ^ JNtON ; ">_t;"";:";: j PRIEDRICHSHAFEN: GmbH: ■ ::: \

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Friedrichshafen

Filling line for liquid containers

The innovation concerns a filling line for liquid containers with continuous level monitoring «e.g. for lubricating oil tanks on engines.

For the service life of an engine, it is important to maintain the maximum lubricating oil fill level given by the design when changing the oil or if possible not to exceed when refilling oil. If the fill level is too high, crankshafts and connecting rod ends are immersed in the lubricating oil, which occurs during operation depending on the level of overfilling caused by the pan-spreading of the lubricating oil can lead to a dangerous increase in temperature and also a more or less large loss of performance results.

Usually the lubricating oil level of an engine is checked with the help of a dipstick, but this is the case continuous observation of the oil level, which is constantly changing during filling, is not possible, and it can be done easily come to overcrowding.

Filling lines for liquid containers are known, have facilities with which continuous level monitoring is possible. These facilities require however either an auxiliary energy or consist of a wear-prone mechanism.

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The innovation is based on the task of a filling line for liquid containers with continuous level monitoring, whereby no auxiliary energy is required and there are no moving mechanical parts.

This object is achieved according to the invention by a filling line, consisting of a first line section with a filling opening, an adjoining U-shaped second line section in which part of the liquid remains air-blocking when the container is first filled, and a into the container protruding third line section, in which, when the container is filled, air is enclosed by a predetermined, smallest container filling level, in which Depending on the tank fill level, a pressure builds up, which is used for continuous level monitoring the can, wherein the cross section of the third line section tes is larger than the smallest cross section of the first or second line section.

According to the innovation, the third line section ends on or near the container bottom and is in communicating connection with the container via openings or recesses.

According to the innovation, a closable opening through which the interior space is arranged on the third line section at the level of the predetermined, smallest container fill level of the third line section can be connected to the atmosphere.

According to the innovation, the first line section has a coordinated length so that the liquid on the filling side

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mirror of the blocking liquid in the U-shaped second line section by the volume of air enclosed at the highest permissible container level Air pressure is raised just to the edge of the filler opening on the first line section.

In a further refinement of the innovation, there is a collecting device for overflowing liquid at the edge of the filling opening appropriate.

On the third line section is the one that protrudes into the container According to one feature of the innovation, the end is a bell-like one Arranged extension.

The advantages that can be achieved with the innovation are, in particular, that a filling line for liquid containers has been created that automatically prevents the container from being filled beyond the maximum permissible container fill level, that a device for continuous level monitoring was created, which is simple in structure and Therefore it is also suitable for rough operation, and that the filling of a liquid container is also necessary when the filing rod is difficult to access to the correct level can be done without difficulty.

An embodiment of the innovation is shown in the drawing and is described in more detail below. The figures show: FIG. 1 schematically a liquid container with a filling pipe; FIG.

Fig. 2 shows a liquid container with a filling line and glooken-like extension.

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A filling conduit for a liquid container 14 is (J of a first line segment 11 with a filling opening 21, a subsequent U-fürmigen second line section 12 in which a portion of liquid 23 remains luftabsperrend in the initial filling of the container 14, and into the container 14 projecting the third conduit section 13, is enclosed in the during the filling of the container 14 by a predetermined, smallest tank level 24 of air builds up in the function of the tank level a pressure This pressure can for the continuous filling -. * level monitoring can be used, for example by a pressure indicator is connected to the third line section 13.

In order not to falsify the level indicator, it is important that the line section 13 flowing through the third line section 13 during filling Liquid does not entrain air. For this reason, the cross section of the third line section 13 is larger as the smallest cross section of the first or second line section 11 or 12. This ensures that the liquid flow from rlem second line section 12 when filling-J) 20 len of the container 14 the cross section of the third line section 13 is only partially filled and does not displace the air from the third line section 13 like a piston.

The third line section 13 ends on or near the container bottom 27 and is in communicating connection with the container 14 via openings or recesses 28.

At the level of the predetermined, smallest container fill level 24, the third line section 13 has an opening 15 which

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connected to a line 16 and a shut-off device 1 '/' is, During the first filling of the container 14 is third Leltungsahsohnitt 12 through the opening 15 when open Shut-off device 17 in connection with the atmosphere. When the predetermined, smallest container fill level 24 is reached, which is caused by escaping liquid at the shut-off device 17 noticeable, this is locked. This results in a minimum level in the third line section 15 guaranteed, so that when the container 14 is inclined, the level display is not falsified by uncontrolled Ventilation of the third line section 13 via the openings or recesses 28 can occur.

The first line section 11 has a coordinated length h ¹ , so that the filling-side liquid level of the blocking liquid in the U-shaped second line section is raised just to the edge of the filling opening 21 by the air pressure resulting in the enclosed air volume at the highest permissible container fill level 25 or 26 will. This means that the container 14 cannot be filled any further. If further liquid is nevertheless poured in, it runs over the hand of the filling opening 21, but not into the container 14.

As already stated at the beginning, the air pressure is the enclosed Air in the third line section I5 depending on the tank fill level. More precisely from the height h to the the liquid level 20 is geodetically higher than the liquid level 19 in the third line section 15. Of the

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Luftdruok In the third Leltungeabeonnltt 13 stands in the Qlelohge wloht with the two Liquidlgkeltsetlulen h and h ¹ , which are therefore always equal in size.

To the versehentlloh during filling or when reaching the höohsten vessel level collect overflow Liquid is arranged a collecting device 18 on the edge of ElnfUllöffnung 21st

On the third line section 13 is the one in the container 14 protruding end, as in Pig. 2 shows a glooken-like Extension 22 arranged. As a result of this bell-like enlargement 22, the height difference is 50 between the liquid level at level 24 and the liquid level 19 lower than the difference height 29 at the filling line Fig. 1. It follows that the total height of the container fill level 26 in Fig. 2 is less than the total height of the container level 25 in Fig. 1. The resulting The lower overall height of the container 14 can be used in cramped installation conditions.

In another exemplary embodiment, the first line section 11 is extended in a funnel-shaped manner beyond the filling opening 21 shown in FIGS. At the level of the coordinated length h ¹ , a pointer mark that is clearly visible from the funnel opening is attached within the first line section 11 as a marker for the highest permissible fill level or 26 of the container 14. With this arrangement, the collecting device 18 can be dispensed with, since the funnel-shaped extension of the first line section 11 as

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Buffer space for a small amount of excess liquid (' liquid is effective.

This funnel also acts as a kind of expansion tank if the trapped air is in the Tent room between two level controls due to temperature increase expands and shifts the filling-side liquid level of the blocking liquid 2j5.

In order to increase the accuracy of the measurement, it is advisable to stop the filling of liquid and the level control at the operating temperature of the container 14, e.g. at Oil change on an engine when the engine is at operating temperature shortly after parking.

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Claims (5)

• I IMi Mil 4 I ti ι ι ι t t protection claims 1. Filling line for liquid containers with continuous Level monitoring, characterized by a first line section (11) with a filling opening (21), an adjoining U-shaped second line section (12), in which the first filling of the A part of the liquid (23) remains in the container in an air-blocking manner, and a part of the liquid (23) protruding into the container (14) remains third line section (13), in which when filling the Container (14) from a predetermined, smallest container level (24) is enclosed in air in which a pressure builds up, depending on the tank fill level, which can be used for continuous level monitoring, the cross-section of the third Line section (13) is larger than the smallest cross section of the first or second line section (11 or 12). () 2. Filling line naah claim 1, characterized in that the third line section (13) ends on or near the container bottom (27) and via openings or recesses (28) is in communicating connection with the container (14). 3. Filling line according to claim 1 and 2, characterized in that the third line section (I3) j η height of the predetermined, smallest container level (24) has a closable opening (I5). May 28, 1973 7 3 0 2a gri-se · / · ■ I · I t 4. Filling line according to Anspruoh 1, characterized in that the first Leltungsabschnltt (11) has a coordinated length (h ¹ ), so that the filling-side liquid level of the blocking liquid (23) in the misshapen second 5th line section (12) through the enclosed Air volume is raised at the highest, permissible container level (25 or 26) resulting air pressure just up to the edge of the filling opening (21) on the first line section (11). 5. Filling line according to claim 2, characterized in that a collecting device (18) for overflowing liquid is attached to the edge of the filling opening (21). 6. Filling line according to claim 1, characterized in that on the third line section (13) on the one in the container (1 * 0 protruding end a bell-like extension (22) is arranged. May 28, 1973 7 3 0 2a gri-se