U.S. patent application number 13/553850 was filed with the patent office on 2012-11-29 for vessel for a liquid, in particular a reducing agent, and vehicle having the vessel.
This patent application is currently assigned to EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH. Invention is credited to JAN HODGSON, CARSTEN KRUSE, SVEN SCHEPERS.
Application Number | 20120298239 13/553850 |
Document ID | / |
Family ID | 43806809 |
Filed Date | 2012-11-29 |
United States Patent
Application |
20120298239 |
Kind Code |
A1 |
HODGSON; JAN ; et
al. |
November 29, 2012 |
VESSEL FOR A LIQUID, IN PARTICULAR A REDUCING AGENT, AND VEHICLE
HAVING THE VESSEL
Abstract
A container for a liquid has a container wall and at least one
inner chamber for receiving the liquid. The container has at least
one discharge line for discharging liquid located in the at least
one inner chamber. The at least one discharge line at least reduces
relative movements of regions of the container wall spaced apart
from each other.
Inventors: |
HODGSON; JAN; (Troisdorf,
DE) ; SCHEPERS; SVEN; (Troisdorf, DE) ; KRUSE;
CARSTEN; (Troisdorf, DE) |
Assignee: |
EMITEC GESELLSCHAFT FUER
EMISSIONSTECHNOLOGIE MBH
LOHMAR
DE
|
Family ID: |
43806809 |
Appl. No.: |
13/553850 |
Filed: |
July 20, 2012 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
PCT/EP2011/050119 |
Jan 6, 2011 |
|
|
|
13553850 |
|
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Current U.S.
Class: |
137/899 ;
137/590 |
Current CPC
Class: |
Y10T 137/6855 20150401;
Y02T 10/12 20130101; F01N 2610/1433 20130101; F01N 2610/10
20130101; Y02A 50/2325 20180101; F01N 2610/1406 20130101; F01N
3/208 20130101; Y02T 10/24 20130101; Y02A 50/20 20180101; Y10T
137/86348 20150401 |
Class at
Publication: |
137/899 ;
137/590 |
International
Class: |
B65D 88/00 20060101
B65D088/00; B65D 90/12 20060101 B65D090/12 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 20, 2010 |
DE |
102010005056.3 |
Claims
1. A vessel for a liquid, the vessel comprising: a vessel wall
defining at least one interior space for accommodating the liquid;
and at least one extraction line for extracting the liquid situated
in said at least one interior space, said at least one extraction
line at least reduces relative movements of spaced-apart regions of
said vessel wall.
2. The vessel according to claim 1, wherein said at least one
extraction line has a direction of extent and compensates the
relative movements of said spaced-apart regions of said vessel wall
in the direction of extent.
3. The vessel according to claim 1, wherein said vessel wall is
formed from plastic and said at least one extraction line is formed
from metal.
4. The vessel according to claim 1, wherein said vessel wall has a
first region and a second region formed opposite one another and
said extraction line being a tubular extraction line supports said
first region against said second region.
5. The vessel according to claim 1, wherein said vessel wall has a
first receptacle and a second receptacle for fastening said at
least one extraction line.
6. The vessel according to claim 1, wherein said at least one
extraction line (5) is disposed in a lockable and unlockable manner
in said vessel wall.
7. The vessel according to claim 4, wherein said vessel wall has at
least one flexible zone disposed adjacent to one of said first and
second regions of the vessel.
8. The vessel according to claim 7, wherein said at least one
flexible zone is formed concentrically around said at least one
extraction line.
9. The vessel according to claim 1, wherein said vessel wall has at
least one translucent portion.
10. A motor vehicle, comprising: a vessel for a liquid, said vessel
containing a vessel wall defining at least one interior space for
accommodating the liquid, and at least one extraction line for
extracting the liquid situated in said at least one interior space,
said at least one extraction line at least reduces relative
movements of spaced-apart regions of said vessel wall; and a dosing
unit for extracting the liquid via said at least one extraction
line.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation, under 35 U.S.C.
.sctn.120, of copending international application No.
PCT/EP2011/050119, filed Jan. 6, 2011, which designated the United
States; this application also claims the priority, under 35 U.S.C.
.sctn.119, of German patent application No. DE 10 2010 005 056.3,
filed Jan. 20, 2010; the prior applications are herewith
incorporated by reference in their entireties.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to a vessel for a liquid, in
particular a tank for a reducing agent such as for example an
aqueous urea solution. Such vessels are used for storing a liquid
in an automobile in order to supply the liquid according to demand
to a consumer, in particular the exhaust line.
[0004] It is known for such vessels or tanks to be provided with
plastic and/or metal. For the continuous use of such vessels, it
must however be taken into consideration that, aside from a low
weight, a high degree of dimensional accuracy must also be
maintained. The dimensional accuracy must be maintained because, in
this way, it can be ensured that "bubble-free" delivery of liquid
is possible when the tank is relatively empty. There are also a
number of fill level monitoring components which realize a liquid
level in relation to the bottom of the vessel. A change in the
relative position of the fill level sensors in relation to the
vessel bottom accordingly leads to an inaccurate measurement
result. Such a change in the relative position can be prevented by
a high degree of dimensional accuracy.
[0005] With regard to the dimensional accuracy, however, it must be
taken into consideration that such vessels are subject to ageing,
which results in particular in deformation of the vessel, in
particular bulges in the region of the tank bottom.
SUMMARY OF THE INVENTION
[0006] Taking this as a starting point, it is an object of the
present invention to specify a vessel which at least partially
solves the problems highlighted with regard to the prior art. In
particular, it is sought to specify a vessel which is lightweight
and which likewise ensures a reliable extraction of liquid and/or a
precise measurement of the (possibly very small) liquid quantity in
the vessel.
[0007] The vessel according to the invention for a liquid has a
vessel wall and at least one interior space for accommodating the
liquid. Furthermore, the vessel has at least one extraction line
for extracting liquid situated in the at least one interior space,
wherein the at least one extraction line at least reduces relative
movements of spaced-apart regions of the vessel wall.
[0008] The vessel is in particular a vessel for an aqueous liquid,
in particular an aqueous urea solution. A vessel of this type may
basically have a single interior space. It is however also possible
for the interior space to be divided into a multiplicity of
chambers, wherein here, the liquid can at least partially be
exchanged between the chambers. The vessel now contains at least
one extraction line which extends into the interior space and
through the interior space. For this purpose, the at least one
extraction line is connected directly and/or indirectly to at least
one region of the vessel wall, but preferably to two regions of the
vessel wall. The at least one extraction line is now arranged such
that the freedom of movement of the two spaced-apart regions of the
vessel wall is reduced or even substantially eliminated owing to
the arrangement of the at least one extraction line. This also
means, in other words, that those regions of the vessel wall which
deform for example during the course of operation are fixed and
supported by the at least one extraction line. For this purpose,
the at least one extraction line may for example brace the two
spaced-apart end regions against one another or, as a
reinforcement, position the two spaced-apart regions relative to
one another. For this purpose, the at least one extraction line
extends for example between the two spaced-apart regions through
the interior space of the vessel, so as to form an internal
support.
[0009] The extraction of liquid from the vessel takes place usually
in a region of the vessel wall in the vicinity of the vessel
bottom, because it is here that an extraction of liquid is possible
even when there is a low liquid fill level in the vessel. Such a
region of the vessel wall is preferably stabilized in the vessel
according to the invention. The extraction pipe normally extends
from such an extraction region of the vessel wall to an opening of
the vessel or to a dosing unit arranged in the vessel or on the
vessel. Relative movements between the extraction region of the
vessel wall and an opening or a dosing unit for the liquid are thus
reduced.
[0010] With the solution proposed here, it is firstly possible for
the vessel to be of relatively thin-walled design, which has
considerable advantages with regard to the weight of a vessel of
the type. At the same time, the at least one extraction line acts
as a stabilizing element in order to permanently maintain the
dimensional accuracy of the vessel. The conflict of aims
highlighted in the introduction is resolved in a simple manner in
this way.
[0011] According to a refinement, it is also proposed that the at
least one extraction line has a direction of extent and relative
movements of spaced-apart regions of the vessel wall in the
direction of extent are compensated. In this way, the at least one
extraction line serves in particular for accommodating compressive
forces or tensile forces, which arise owing to a deformation of the
vessel, in particular with regard to the spaced-apart regions. In
particularly preferred embodiments, the at least one extraction
line may also be arranged such that it can accommodate or
compensate forces and movements perpendicular to the direction of
extent.
[0012] It is also considered to be advantageous for the vessel wall
to be formed with plastic and for the at least one extraction line
to be formed with metal. With regard to the plastic, it must be
noted that the plastic must in particular be suitable for
accommodating aqueous urea solution. Considerable weight savings
can be attained with a vessel wall composed of plastic. By
contrast, the at least one extraction line is in this case composed
of metal, such that the extraction line has greater strength and/or
stiffness than the vessel wall and fixes the spaced-apart regions
of the vessel wall with respect to one another.
[0013] Furthermore, a vessel wall composed of plastic normally
exhibits a considerably more pronounced thermal expansion movement
than an extraction line composed of metal. The extent and the
volume of the interior space of the vessel thus vary relatively
significantly in the event of fluctuating temperatures. A (stable)
metallic extraction pipe which defines the spacing between
different regions of the vessel wall makes it possible to at least
partially limit or prevent the change in the volume of the interior
of the vessel. In particular, the extent of the vessel in a
direction in which a fill level measurement is to take place can be
reduced.
[0014] According to a refinement of the invention, it is provided
that a first region of the vessel wall and a second region of the
vessel wall are formed opposite one another and a tubular
extraction line supports the first region against the second
region. The first region of the vessel wall is for example a vessel
roof, whereas the second region of the vessel wall is the vessel
bottom. The tubular form of the extraction line leads to a
particularly dimensionally rigid form of the extraction line, and
permits an integration of sensors, liquid lines, electric heaters
or the like.
[0015] Here, it is advantageous for the vessel wall to be fixed
relative to the extraction line if at least one sensor for fill
level determination is fastened to the extraction line. In this
way, the relative position of the at least one sensor for fill
level measurement with respect to the vessel bottom is precisely
predefined. The fixing of the relative position is of crucial
significance for the accuracy of the fill level measurement,
because the fill level volume measured by the at least one sensor
is situated between the vessel bottom and the sensor. A drop of the
tank bottom thus does not have an effect on the measured fill level
volume because the extraction pipe and the fill level sensor on the
extraction pipe drop to the same extent.
[0016] It is furthermore considered to be advantageous for the
vessel wall to have a first receptacle and a second receptacle for
fastening the at least one extraction line. Under some
circumstances, it is advantageous for at least the receptacle to
have fixing elements which are likewise more dimensionally rigid
than the regions of the vessel wall. It is for example possible for
metallic inserts to be provided on or in the vessel wall, which
inserts interact with the extraction line. The metallic inserts may
for example be jointly cast into a vessel wall formed from plastic,
though may also be retroactively attached to a vessel wall of this
type. The inserts may for example be of annular form and have
closure elements.
[0017] It is also proposed that the at least one extraction line be
arranged in a lockable and unlockable manner in the vessel wall.
This facilitates in particular servicing or repair of the vessel.
Such a lockable and unlockable arrangement may be realized by
releasable connecting devices or closure systems. A preferred
closure element is for example a so-called bayonet closure.
[0018] In another refinement, at least one flexible zone is
provided at least adjacent to one of the regions of the vessel. The
flexible zone is in particular formed so as to permit a relative
movement between the at least one extraction line and the vessel
only above a predefined internal pressure in the interior space.
This applies in particular to a situation in which the stored
liquid is exposed to extreme temperatures, such that an elevated
gas pressure or ice pressure can hereby be compensated. Here, the
flexible zones are preferably formed symmetrically with respect to
the spaced-apart regions, for example in a circular arrangement
around those regions of the vessel wall which are spaced apart from
one another and which are fixed by the at least one extraction
line. It is particularly preferable for the flexible zones to be
formed from the same material as the vessel wall.
[0019] It is preferable for a flexible zone to be formed adjacent
to only one of the fixed regions. It is furthermore particularly
preferable for the opposite fixed region to be of particularly
rigid form, for example with reinforcements. The rigid region thus
defines the position of the extraction pipe, and the oppositely
arranged region with the flexible zone adapts its position to the
position of the rigid region. The relative position of the two
spaced-apart regions with respect to one another can thus be
predefined particularly precisely even if for example thermal
expansions or ageing of the vessel occurs.
[0020] In this connection, it is particularly preferable for the at
least one flexible zone to be formed concentrically around the at
least one extraction line. It is accordingly also very particularly
preferable for in each case one flexible zone, which runs (in
closed form) concentrically around the extraction line, to be
provided in those parts (regions) of the tank in or on which the
extraction line is supported. This refers in particular to regions
of the tank bottom and/or of the tank roof.
[0021] In one refinement, it is also proposed that a resilient
element be provided in the region of the first receptacle or in the
region of the second receptacle. The resilient element may for
example be metallic. The resilient element is preferably a metallic
plate spring. The resilient element is arranged such that it braces
the extraction pipe between the spaced-apart regions of the vessel
wall. The tank is thus also braced, and relative movements between
the spaced-apart regions of the vessel wall are reduced. The plate
spring may preferably be of disc-shaped form and arranged around
the extraction pipe. The resilient element may also be jointly
integrated into the vessel wall. It is particularly advantageous
for the extraction pipe to be pressed with a defined force against
the tank bottom. The force may be dimensioned such that the
extraction pipe does not detach from the tank bottom under the
action of accelerations and forces arising during operation of a
motor vehicle. This is advantageous because the fill level
measurement and the extraction are carried out in each case in
relation to the tank bottom.
[0022] Furthermore, it is also proposed that at least one
translucent portion be provided in the vessel wall. Through the
translucent portion in the vessel wall it is possible to look into
the interior space of the vessel from the outside. This is
advantageous in particular if the at least one extraction line must
be fixed in an internal receptacle during assembly. It can thus be
realized firstly that a flat tank bottom is provided but also at
the same time that assembly in the interior space of the vessel can
be carried out in a simple manner via a single opening. Here, the
translucent portion may be provided with a different material,
wherein plastic is preferable, though if necessary it is also
possible for the translucent portion to be realized by virtue of
the rest of the vessel wall being covered or painted. In general,
the provision of a single translucent portion will be adequate,
though this is not imperatively necessary.
[0023] The invention can be used in particular in a motor vehicle
having a vessel, configured according to the invention, for a
liquid, wherein a dosing unit is provided for extracting the liquid
via the at least one extraction line. A motor vehicle of this type
is in particular one in which a reducing agent (aqueous urea
solution) is supplied into the exhaust system of the motor vehicle.
For this purpose, the dosing unit may be provided with
corresponding controllers in order to deliver the liquid out of the
vessel as required.
[0024] Other features which are considered as characteristic for
the invention are set forth in the appended claims.
[0025] Although the invention is illustrated and described herein
as embodied in a vessel for a liquid, in particular a reducing
agent, it is nevertheless not intended to be limited to the details
shown, since various modifications and structural changes may be
made therein without departing from the spirit of the invention and
within the scope and range of equivalents of the claims.
[0026] The construction and method of operation of the invention,
however, together with additional objects and advantages thereof
will be best understood from the following description of specific
embodiments when read in connection with the accompanying
drawings.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
[0027] FIG. 1 is a diagrammatic, sectional view of a first
embodiment of a vessel according to the invention;
[0028] FIG. 2 is a diagrammatic, sectional view of a second
embodiment of the vessel;
[0029] FIG. 3 is an illustration showing a third embodiment of the
vessel;
[0030] FIG. 4 is an illustration showing a motor vehicle having a
vessel and a dosing unit;
[0031] FIG. 5 is an illustration showing a fourth embodiment of the
vessel;
[0032] FIG. 6 is an illustration showing a fifth embodiment of the
vessel; and
[0033] FIG. 7 is an illustration showing a sixth embodiment of the
vessel.
DETAILED DESCRIPTION OF THE INVENTION
[0034] Referring now to the figures of the drawing in detail and
first, particularly, to FIG. 1 thereof, there is shown a vessel 1
which forms a single interior space 4 in which liquid 2 is stored.
The vessel 1 is in particular a tank for aqueous urea solution. The
interior space 4 is formed by a closed vessel wall 3. It is clear
that the shape of the vessel wall 3 is in this case shown highly
schematically, and possibly has a shape with numerous inward and
outward protuberances. Here, the vessel wall 3 is for example
formed with plastic, wherein in the lower left region there is
provided a translucent portion 14 through which a fitter can see
into the interior space 4. The vessel wall forms in particular an
upper tank roof, a lower tank bottom and interposed tank side
walls.
[0035] Here, a single extraction line 5 extends through the
interior space 4, the extraction line 5 being in the form of a tube
and forming a direction of extent 6. Here, the liquid 2 situated in
the vessel 1 is conveyed via openings 15 in the extraction line 5
to the dosing unit 13, which in this case is arranged on the top of
the vessel 1 (vessel roof). The extraction line 5 is arranged or
positioned on the vessel wall 3 so as to impart a stiffening
action. For this purpose, the extraction line 5 extends between a
first region and a second region 8 of the vessel wall, the regions
being formed spaced apart, that is to say opposite one another.
Here, the first region 7 is provided with a first receptacle 9 and
the second region 8 is provided with a second receptacle 10. Here,
both receptacles are integrated into the vessel wall 3, for example
in the form of a cast-in bayonet closure. The second receptacle 10
is preferably a cast-in bayonet closure of the type. The first
receptacle 9 may for example be realized as a cutout into which the
dosing unit 13 with the extraction line 5 can be inserted. The
dosing unit 13 is preferably formed with a circular (metallic)
housing. The extraction line 5 may then be arranged eccentrically
on the dosing unit 13. This permits a suitable embodiment of the
second receptacle 10 in which the extraction line 5 can be locked
to the second receptacle 10 by a rotational movement of the dosing
unit 13, and can be unlocked by a further or opposite rotational
movement.
[0036] There has hitherto been the risk of the vessel 1 deforming,
in particular bulging, in particular in the region of the bottom
illustrated at the bottom, under the weight of the liquid 2. This
would cause the openings 15 of the extraction line 5 to move away
from the bottom, and delivery of liquid would be a problem in the
near-empty state. This is prevented here in that the extraction
line 5 reduces or prevents relative movements of the first region 7
with respect to the second region 8. For this purpose, the
extraction line is fixedly connected to the first region 7 and to
the second region 8.
[0037] FIG. 2 shows basically the same configuration of the vessel
1, such that here, identical parts are provided with the same
reference numerals. In contrast to FIG. 1, it is the case here that
the dosing unit 13 is integrated into the interior space 4 of the
vessel 1. In this case, the extraction line 5 is fixed via the
dosing unit 13 to the first region 7 of the vessel wall 3. Spaced
apart therefrom there is provided, as a second region 8, a
separately formed reservoir 17 from which the liquid 2 is
extracted. Here, too, stiffening of the vessel structure is
realized by corresponding fixing of the extraction line 5 to the
reservoir 17. In this case, the extraction line is arranged
obliquely in the interior space 4 of the vessel 1.
[0038] FIG. 3 shows the provision of a flexible zone 11 which is
formed circularly around the second region 8 with the second
receptacle 10 of the vessel wall 3. Here, the flexible zone 11 is
in the form of a corrugation (if appropriate with a smaller wall
thickness) in the vessel wall 3. It is alternatively or
additionally also possible for a flexible zone 11 to be formed
around the first region 7 with the first receptacle 9 of the vessel
wall 3. By the flexible zone 11, the volume of the interior space 4
of the vessel 1 is fixed, such that the volume varies to a lesser
extent owing to thermal expansions and owing to ageing.
[0039] FIG. 4 finally shows a motor vehicle 12 equipped with the
corresponding vessel 1. It can be seen in the vessel 1 that the
vessel wall 3 forms an interior space 4 in which liquid 2 is
stored. In the situation illustrated here, the vessel 1 has a
heater 19 by which the vessel wall 3 and/or the liquid 2 in the
vessel 1 can be heated as required. Again, the vessel bottom is
braced with respect to the vessel roof by the extraction line 5,
such that the first region 7 is supported with respect to the
second region 8. Corresponding first receptacles 9 and second
receptacles 10 are provided for this purpose. In the design variant
of the extraction line 5 (composed of metal), an additional fill
level sensor 18 and an integrated extraction pipe heater 26 are
provided. The dosing unit 13, which may be positioned in the
interior space 4 of the vessel 1, contains, in a separate housing,
a pump 23, a filter 24 and a valve 25, which the liquid flows
through in this sequence when it is being delivered. By use of the
valve 25, it is possible to regulate whether liquid 2 is conducted
back into the interior space 4 via the return line 20 or supplied
to an injector 21 via a feed line 22. In this way, it is possible
for the liquid 2, in particular aqueous urea solution, to be
supplied as required to an exhaust line 27 via the injector 21. The
liquid which is metered into the exhaust line 27 is entrained by
the exhaust gas in the exhaust-gas flow direction 29, wherein an
evaporation and/or conversion of the liquid may take place. The
mixture of exhaust gas and liquid may then be supplied to an
exhaust-gas treatment unit 28, for example a hydrolysis catalytic
converter or a so-called SCR catalytic converter.
[0040] FIG. 5 shows the provision of a plate spring 30 which
presses the extraction pipe 5 in the vessel 1 against a second
region 8 of the vessel wall 3, and thereby braces a first region 7
of the vessel wall 3 and the second region 8 against one another.
The extraction pipe 5 extends through the interior space 4 of the
vessel 1. A first receptacle 9 and a second receptacle 10 may be
provided on the vessel wall 3 for the extraction pipe 5. The plate
spring 30 may be circular. Shoulders 31 may be provided which fix
the plate spring 30 in its position. The shoulders 31 are in this
case illustrated on the extraction pipe 5. The shoulders may also
be provided on the first receptacle 9 or on the vessel wall 3. It
is preferable for the plate spring 30 for bracing the extraction
pipe 5 to be provided on the upper end of the extraction pipe 5,
because in this way, a fixed arrangement of the extraction pipe 5
with respect to the bottom of the vessel 3 is possible. It is
however also possible for the plate spring 30 to be provided on the
lower end of the extraction pipe 5 at the second receptacle 10. The
features explained above for the arrangement of the plate spring 30
on the top of the extraction pipe 5 can be correspondingly applied
thereto.
[0041] FIG. 6 shows a fifth embodiment of the vessel 1 according to
the invention, the design variant having a special form of a
flexible zone 11 which is formed circularly around the second
region 8 with the second receptacle 10 of the vessel wall 3. Here,
the flexible zone 11 is in the form of a corrugated wall of a sump
33 arranged in a bottom 32 of the vessel 1. The vessel wall 3 of
the sump 33 may if appropriate be formed so as to have a smaller
wall thickness in the region of the flexible zone 11 than in other
regions. Owing to the flexible zone 11, the bottom 32 of the vessel
1 is at least partially movable independently of the sump 33. The
sump 33 forms the second region 8 of the vessel 1 with the second
receptacle 10. The sump 33 is positioned fixedly in relation to the
first region 7 of the vessel 1 with the first receptacle 9 by the
extraction line 5.
[0042] FIG. 7 shows a sixth embodiment of the vessel 1 according to
the invention, in which the flexible zone 11 is formed circularly
around the second region 8 with the second receptacle 10 of the
vessel wall 3. Here, the flexible zone 11 is in the form of an
encircling indentation 35 which rises proceeding from the bottom 32
of the vessel 1 and falls into the sump 33. The vessel wall 3 may
if appropriate be formed with a relatively small wall thickness in
the region of the indentation 35. Increased flexibility of the
indentation 35 is attained in this way. Owing to the indentation
35, the bottom 32 of the vessel 1 is at least partially movable
independently of the sump 33. The sump 33 forms the second region 8
of the vessel 1 with the second receptacle 10. The sump 33 is
positioned fixedly in relation to the first region 7 of the vessel
with the first receptacle 9 by the extraction line 5. The
indentation 35 constitutes a flow resistance between the rest of
the bottom 32 and the sump 33. The indentation 35 may be shaped
such that, in the case of particularly low fill levels in the
vessel 1, liquid 2 passes from the bottom 32 into the sump 33 as a
result of sloshing movements, but a return flow of liquid from the
sump 33 to the rest of the bottom 32 of the vessel 1 is hindered.
FIG. 7 shows such a design of the indentation 35. In the direction
of the sump 33, the indentation 35 is formed with a steeply rising
flank, whereas the indentation 35 slopes down at a shallow angle to
the rest of the bottom 32 of the vessel 1. FIG. 7 shows an elevated
fill level of liquid 2 within the sump 33 as a result of sloshing
movements.
[0043] Furthermore, FIG. 7 illustrates a special variant of the
second receptacle 10 for fastening the extraction line 5 to the
vessel wall 3. Fastened to the extraction line 5 is an anchor 34
which engages into a corresponding cutout 36 of the vessel wall 3.
By a second receptacle 10 of the type, it is possible to attain
secure fixing of the extraction line 5 to the vessel wall 3, via
which fixing both axial forces (in the direction of the extraction
line 5) and also transverse forces (perpendicular to the extraction
line 5) can be transmitted.
* * * * *