EP3889443B1 - Dispositif de levage d'aspiration destiné au vidange d'un réservoir - Google Patents

Dispositif de levage d'aspiration destiné au vidange d'un réservoir Download PDF

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Publication number
EP3889443B1
EP3889443B1 EP21160918.5A EP21160918A EP3889443B1 EP 3889443 B1 EP3889443 B1 EP 3889443B1 EP 21160918 A EP21160918 A EP 21160918A EP 3889443 B1 EP3889443 B1 EP 3889443B1
Authority
EP
European Patent Office
Prior art keywords
suction
suction lifting
lifting device
emptying
gas mixture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21160918.5A
Other languages
German (de)
English (en)
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EP3889443A1 (fr
Inventor
Günther SCHLESS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Mobility GmbH
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Siemens Mobility GmbH
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Filing date
Publication date
Application filed by Siemens Mobility GmbH filed Critical Siemens Mobility GmbH
Publication of EP3889443A1 publication Critical patent/EP3889443A1/fr
Application granted granted Critical
Publication of EP3889443B1 publication Critical patent/EP3889443B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F10/00—Siphons
    • F04F10/02—Gravity-actuated siphons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/24—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing liquids, e.g. containing solids, or liquids and elastic fluids

Definitions

  • the invention relates to a suction lifting device for emptying a tank and a method for operating the suction lifting device.
  • a tank can be emptied actively using a pump or passively using gravity. To save costs and weight, emptying is often done passively. A duration of passive emptying of the tank depends on an outflow rate of a tank's contents from the tank. In order to limit the emptying duration during passive emptying, a sufficiently high outflow rate is required. This can be achieved by using large cable cross-sections. The large cable cross-sections mean that correspondingly large and therefore heavy shut-off valves are required. These shut-off valves can be dispensed with by using a suction lifting device.
  • the suction lifting device is a device for lifting a liquid.
  • the lifting of the liquid is based on a gravitational hydrostatic pressure difference between a suction opening and an outlet opening of a discharge line of the suction lifting device.
  • a suction lifting process ends as soon as a liquid level in the tank contents drops below the suction opening.
  • CN 2 057 483 U , GB 2 289 505 A and JP S55 20645 U show, for example, generic suction lifting devices.
  • GB 2 289 505 A There is a valve in the downpipe and a Venturi nozzle underneath, which supplies compressed air and causes the tank contents to be sucked in.
  • EP 2 604 909 A1 teaches a compressed air supply to a tank in order to to effect emptying via a riser according to the siphon principle.
  • the publication AT 257 374 B discloses a suction lifting device for emptying a tank according to the preamble of claim 1.
  • Another suction lifting device from the prior art is in the publication KR 102 007 124 B1 disclosed.
  • the invention is based on the object of providing a device with improved operating properties.
  • the invention is based on the object of providing a method for operating the suction lifting device according to the invention.
  • the suction lifting device provides that a ventilation opening is arranged in a section of the drain line located between the suction opening and the outlet opening, by means of which a gas or gas mixture can be fed to the drain line. Furthermore, a closure device is provided, by means of which the aforementioned supply of the gas or the gas mixture can be stopped.
  • Vententilation opening should be understood to mean an opening that is at least partially delimited by an outer wall of the drain line and which penetrates the outer wall of the drain line.
  • the closure device can be designed as a closure cap, a plug, a fitting, a valve or another component that appears useful to a person skilled in the art.
  • an initiated suction lifting process can be reliably aborted at any time.
  • a pressure sink is provided, by means of which a gas or a gas mixture can be extracted from the drain line.
  • a “pressure sink” is to be understood as a device by means of which a pressure gradient can be provided from an ambient air pressure to a lower pressure.
  • the pressure sink can be, for example, an intake side of a compressor or an at least partially evacuated space whose internal pressure is lower than an ambient air pressure.
  • the withdrawn gas or gas mixture can be either a gas or gas mixture that was already in the emptying line before the suction lifting process was initiated or the gas or gas mixture that was added to the emptying line to stop the suction lifting process.
  • a first initiation or a continuation of an aborted suction lifting process can be prepared by the pressure sink causing liquid to be transported from a tank into the downpipe section by means of the said withdrawal of the gas and the gas mixture from the drain line.
  • a gas or gas mixture can be removed from the drain line through the ventilation opening.
  • the pressure sink is then designed as a suction pipe of a Venturi nozzle.
  • the gas or the gas mixture can be removed from the drain line using the suction pipe.
  • the Venturi nozzle can be used to provide a lightweight and compact pressure sink.
  • a pressure source is provided, by means of which the gas or gas mixture that can be fed to the drain line can be fed as a compressed gas or gas mixture.
  • a “pressure source” is to be understood as meaning a device which produces a gas or gas that is compressed relative to ambient air pressure Can provide gas mixture.
  • the pressure source can be, for example, a compressor or a compressed air reservoir.
  • a diversion device by means of which the compressed gas or gas mixture can be diverted to the suction pipe.
  • the compressed gas or gas mixture can be fed to the drain line using the suction pipe.
  • the diverter is preferably arranged downstream of an output side of the Venturi nozzle.
  • a valve for example, can be provided as a diverting device.
  • the compressed gas or gas mixture can either be supplied to the drain line or the gas or gas mixture can be withdrawn from the drain line.
  • Several functions can be combined in one component, thus reducing the total number of required components.
  • the closure device is connected to a line which opens into the ventilation opening.
  • the line can open directly into the ventilation opening or be connected to a line which opens directly into the ventilation opening.
  • the closure device can open directly into the ventilation opening.
  • the ventilation opening can be closed safely and reliably by the described development in order to prevent an unintentional termination of the suction lifting process.
  • the ventilation opening is arranged above the suction opening in an operating orientation of the suction lifting device.
  • operating orientation refers to an orientation of the suction lifting device in which it is ready for operation, i.e. can work in the intended manner.
  • This operational orientation requires that the intake port be located above the exhaust port. This allows a hydrostatic pressure difference to be built up within the suction lifting device.
  • the ventilation opening can be arranged in a riser section or in a downpipe section.
  • a “downline section” is to be understood as meaning a section of the emptying line in which a liquid falls along a direction of the gravitational force during operation of the suction lifting device.
  • a “riser” is to be understood as meaning a section of the emptying line in which a liquid rises against a direction of the gravitational force when the suction lifting device is in operation.
  • the term "above” is intended to be understood broadly in this description. An object located above a reference object may be located along a vertical line through the reference object or away from the vertical line passing through the reference object.
  • a ventilation volume and/or a ventilation pressure required to cancel the suction lifting process can be kept small.
  • An advantageous embodiment variant provides that the ventilation opening is arranged in a vertex of the drain line.
  • the ventilation opening is arranged in the apex, the ventilation volume required to terminate the suction lifting process and the required ventilation pressure can be minimized.
  • the dimensioning of the The components required to abort the suction lifting process can also be optimized, meaning that installation space can be used efficiently and weight can be saved.
  • a blocking element is arranged in a downpipe section of the drain line.
  • a “blocking element” is to be understood as meaning a fitting that is designed to interrupt a flow of liquid.
  • a liquid flow in the emptying line and thus the suction lifting process can be interrupted. If there is an interruption in the suction lifting process, aborting the suction lifting process can be made easier because an unwanted removal of the supplied gas or gas mixture with the liquid flow is prevented. A required ventilation volume can therefore be used efficiently due to the interruption of the suction lifting process.
  • the blocking element is preferably designed as a pneumatic pinch valve. As a result, a cost-effective and compact component can be used and existing installation space can be used efficiently.
  • the suction lifting device described above can be advantageously used in a vehicle.
  • the vehicle then has a tank and the suction lifting device according to the invention.
  • the suction opening is arranged within the tank in the operating orientation of the suction lifting device. This design variant has proven itself in practice.
  • the suction lifting device according to the invention can be operated using the method according to the invention.
  • the method provides that a suction lifting process is aborted by ventilating the emptying line using a ventilation opening located between the suction opening and the outlet opening.
  • a suction lifting process is aborted by ventilating the emptying line using a ventilation opening located between the suction opening and the outlet opening.
  • An advantageous development provides that a liquid flow in the drain line is interrupted by means of the blocking element. By interrupting the liquid flow, an interruption of the suction lifting process can be realized.
  • An advantageous embodiment variant provides that the drain line is ventilated after the liquid flow has been interrupted. Interrupting the flow of liquid can make lifting easier compared to a continuous suction lift. An operational removal of a ventilation volume can be prevented.
  • the drain line is ventilated with excess pressure. This makes it possible to terminate the suction lifting process particularly reliably and quickly, even with larger cross-sections of the emptying line using relatively light and compact components.
  • FIG 1 shows a rail-bound vehicle 42 with a tank 12 and a suction lifting device 10.
  • the suction lifting device 10 is set up to empty the tank 12 using gravitational force.
  • the suction lifting device 10 has an emptying line 14.
  • the drain line 14 has a downpipe section 40 with an outlet opening 18 and a riser section 48 with a suction opening 16.
  • a blocking element 38 is arranged in the downpipe section 40.
  • the blocking element 38 is designed as a pneumatic pinch valve. By means of the blocking element 38, a liquid flow in the emptying line 14 can be interrupted. Furthermore, a liquid can be accumulated in the downpipe section 40 by means of the blocking element 38.
  • FIG 1 further shows the suction lifting device 10 in an operating orientation.
  • the suction opening 16 is arranged above the outlet opening 18.
  • a tank content can be transported from the suction opening 16 to the outlet opening 18.
  • a suction lifting process can be initiated.
  • the tank 12 can then be emptied.
  • FIG 2 shows the suction lifting device 10 and illustrates an example of a method for operating the suction lifting device 10.
  • a pressure source 28 is provided in the present exemplary embodiment, by means of which compressed ambient air can be supplied as a gas mixture to the emptying line 14.
  • the pressure source 28 is designed as a compressor.
  • a ventilation opening 20 is arranged in a section of the drain line 14 located between the suction opening 16 and the outlet opening 18.
  • the ventilation opening 20 penetrates an outer wall of the emptying line 14.
  • the ventilation opening 20 is arranged above the suction opening 16 in a vertex 26 of the emptying line 14.
  • a closure device 22 is provided, which is connected to a line 24 which opens into the ventilation opening 20.
  • the closure device 22 is designed as a valve by means of which the aforementioned supply of the gas mixture can be stopped.
  • the closure device 22 is arranged in the line 24 between the pressure source 28 and the ventilation opening 20.
  • the closure device 22 In the event that the suction lifting device 10 is to be operated to empty the tank 12, the closure device 22 must be closed. In the event that a suction lifting process is to be aborted, the closure device 22 is opened. The compressed gas mixture can then flow through the closure device 22.
  • the compressed gas mixture is passed through a Venturi nozzle 34 in the present exemplary embodiment.
  • the Venturi nozzle 34 is arranged in the line 24 in a flow direction of the compressed gas mixture after the closure device 22.
  • An embodiment of the Venturi nozzle 34 is shown in FIG 3 shown in more detail.
  • the Venturi nozzle 34 has an inlet side 44, an outlet side 46 and a suction pipe 32.
  • the Venturi nozzle 34 can be operated in two different ways. When the Venturi nozzle 34 is in suction mode, the compressed gas mixture can flow unhindered from the inlet side 44 to the outlet side 46. Due to the well-known construction of the Venturi nozzle 34, a negative pressure is thereby generated on the suction pipe 32.
  • the inlet side 44 and the suction pipe 32 are each connected to a section of the line 24, which opens into the ventilation opening 20.
  • the suction pipe 32 is thus designed in the suction mode as a pressure sink 30, by means of which a gas mixture can be removed from the emptying line 14.
  • a diversion device 36 is provided.
  • the diverting device 36 is designed as a valve.
  • the compressed gas mixture can be diverted to the suction pipe 32.
  • By closing the diverter device 36 an unhindered flow of the compressed gas mixture from the inlet side 44 to the outlet side 46 is prevented.
  • the compressed gas mixture flowing into the inlet side 44 exits to the suction pipe 32 in the case of the closed diversion device 36.
  • the compressed gas mixture can thus be supplied to the ventilation opening 20 by means of the Venturi nozzle 34 in the diversion mode and the drain line 14 can be ventilated with excess pressure.
  • a downstream side of the diverting device 36 opens into the downpipe section 40 below the blocking element 38.
  • FIG 2 Illustrates how a suction lifting process can be started, interrupted or canceled using the previously described suction lifting device:
  • the locking element 38 arranged in the downpipe section 40 must be activated getting closed.
  • a gas or gas mixture is then removed from the drain line 14 by means of the pressure sink 30, i.e. the Venturi nozzle 34 in a suction mode. Due to the negative pressure in the emptying line 14, a tank contents from the tank 12 are conveyed through the suction opening 16 into the downpipe section 40. If a hydrostatic pressure of a liquid in the downpipe section 40 exceeds a hydrostatic pressure of a liquid in the riser section 48, the locking element 38 can be opened and the suction lifting process is started.
  • the suction lifting process can be interrupted by closing the locking element 38. As a result, the liquid flow in the emptying line 14 with the blocking element 38 is interrupted. The interrupted suction lifting process can then be continued by opening the locking element 38.
  • the Venturi nozzle 34 is operated in bypass mode.
  • the drain line 14 can be ventilated using the ventilation opening 20.
  • the drain line 14 is ventilated with excess pressure.
  • the suction lifting process can be canceled both during uninterrupted and interrupted suction lifting processes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Jet Pumps And Other Pumps (AREA)

Claims (10)

  1. Dispositif (10) de levage par aspiration pour la vidange d'un réservoir d'eau (12), comportant un conduit (14) de vidange, qui a une ouverture (16) d'aspiration et une ouverture (18) de sortie, dans lequel
    - dans un tronçon, entre l'ouverture (16) d'aspiration et l'ouverture (18) de sortie, du conduit (14) de vidange est montée une ouverture (20) de ventilation, au moyen de laquelle un gaz ou un mélange gazeux peut être envoyé au conduit (14) de vidange
    - il est prévu un dispositif (22) de fermeture, au moyen duquel ledit envoi du gaz ou du mélange gazeux peut être supprimé,
    il est prévu un puits (30) de pression, qui est constitué sous la forme d'un tube (32) d'aspiration d'une buse (34) Venturi, au moyen duquel puits (30) de pression un gaz ou un mélange gazeux peut être retiré du conduit (14) de vidange, caractérisé
    en ce qu'il est prévu une source de pression, au moyen de laquelle le gaz ou le mélange gazeux pouvant être envoyé au conduit de vidange peut être envoyé sous la forme de gaz ou de mélange gazeux comprimé, dans lequel
    - il est prévu un dispositif (36) de contournement, au moyen duquel le gaz ou le mélange gazeux comprimé peut être détourné vers le tube (32) d'aspiration de la buse (34) Venturi et
    - le gaz ou le mélange gazeux comprimé peut être envoyé au conduit (14) de vidange au moyen du tube (32) d'aspiration.
  2. Dispositif (10) de levage par aspiration suivant la revendication 1,
    caractérisé en ce que
    le dispositif (22) de fermeture est relié à un conduit (24), qui débouche dans l'ouverture (20) de ventilation.
  3. Dispositif (10) suivant l'une des revendications 1 ou 2,
    caractérisé en ce que
    l'ouverture (20) de ventilation est disposé, dans un sens de fonctionnement du dispositif de levage (10) par aspiration, au-dessus de l'ouverture (16) d'aspiration.
  4. Dispositif (10) suivant l'une des revendications précédentes,
    caractérisé en ce que
    l'ouverture (20) de ventilation est disposée au point (26) culminant du conduit (14) de vidange.
  5. Dispositif (10) suivant l'une des revendications précédentes,
    caractérisé en ce qu'
    un élément (38) d'arrêt est monté dans le tronçon (40) descendant du conduit (14) de vidange.
  6. Véhicule (42) comprenant un réservoir (12) et un dispositif (10) de levage par aspiration, suivant l'une des revendications précédentes,
    caractérisé en ce que
    l'ouverture (16) d'aspiration est disposée, dans le sens de fonctionnement du dispositif (10) de levage par aspiration, à l'intérieur du réservoir (12).
  7. Procédé pour faire fonctionner le dispositif (10) de levage par aspiration suivant l'une des revendications 1 à 5,
    caractérisé en ce que
    l'on interrompt une opération de levage par aspiration en ventilant le conduit (14) de vidange au moyen d'une ouverture (20) de ventilation entre l'ouverture (16) d'aspiration et l'ouverture (18) de sortie.
  8. Procédé suivant la revendication 7 pour faire fonctionner le dispositif (10) de levage par aspiration suivant la revendication 5,
    caractérisé en ce que
    l'on interrompt un courant de liquide dans le conduit (14) de vidange au moyen de l'élément (38) d'arrêt.
  9. Procédé suivant la revendication 8,
    caractérisé en ce qu'
    après la dite interruption du courant de liquide, on ventile le conduit (14) de vidange.
  10. Procédé suivant l'une des revendications 7 à 9,
    caractérisé en ce que
    l'on ventile le conduit (14) de vidange par surpression.
EP21160918.5A 2020-03-31 2021-03-05 Dispositif de levage d'aspiration destiné au vidange d'un réservoir Active EP3889443B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020204177.6A DE102020204177A1 (de) 2020-03-31 2020-03-31 Saughebevorrichtung zur Entleerung eines Tanks

Publications (2)

Publication Number Publication Date
EP3889443A1 EP3889443A1 (fr) 2021-10-06
EP3889443B1 true EP3889443B1 (fr) 2024-02-14

Family

ID=74884789

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21160918.5A Active EP3889443B1 (fr) 2020-03-31 2021-03-05 Dispositif de levage d'aspiration destiné au vidange d'un réservoir

Country Status (2)

Country Link
EP (1) EP3889443B1 (fr)
DE (1) DE102020204177A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1421844A (en) * 1914-09-14 1922-07-04 Westinghouse Electric & Mfg Co Fluid-translating device
DE1528661A1 (de) 1966-04-18 1971-03-25 Paul Bungartz Tauchpumpe mit Zwischenbehaelter zum Foerdern von Fluessigkeiten aus Lagerbehaeltern ueber eine oben eingefuehrte Saugleitung
DE2339717A1 (de) 1973-08-06 1975-02-20 Gewerkschaften Brigitta Und El Armaturenfreie schwefelentladung aus bahn-kesselwagen
JPS5520645U (fr) * 1978-07-28 1980-02-08
CN2057483U (zh) * 1989-08-31 1990-05-23 郭文亮 实用虹吸式抽油装置
JPH04330400A (ja) * 1991-02-06 1992-11-18 Fujitsu Ltd 排液装置
GB2289505B (en) 1994-05-18 1997-07-23 Raymond Elliott Siphon device
GB201121261D0 (en) * 2011-12-12 2012-01-18 Forbes Technologies Ltd Dip pipe assembly and method of operation
KR102007124B1 (ko) * 2018-12-04 2019-08-02 김일 사이펀 취수 장치

Also Published As

Publication number Publication date
DE102020204177A1 (de) 2021-09-30
EP3889443A1 (fr) 2021-10-06

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