EP3889443A1 - 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
EP3889443A1
EP3889443A1 EP21160918.5A EP21160918A EP3889443A1 EP 3889443 A1 EP3889443 A1 EP 3889443A1 EP 21160918 A EP21160918 A EP 21160918A EP 3889443 A1 EP3889443 A1 EP 3889443A1
Authority
EP
European Patent Office
Prior art keywords
suction
lifting device
suction lifting
emptying
opening
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.)
Granted
Application number
EP21160918.5A
Other languages
German (de)
English (en)
Other versions
EP3889443B1 (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
Original Assignee
Siemens Mobility GmbH
Priority date (The priority date 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 date listed.)
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
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 by means of a pump or passively by means of gravity. Passive emptying is often used to save costs and weight. A duration of the passive emptying of the tank depends on a flow rate of a tank content from the tank. A sufficiently high drainage rate is therefore required so that a period of emptying can be limited in the case of passive emptying. 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 with the use of 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 an emptying line of the suction lifting device.
  • a suction lifting process ends as soon as a liquid level of the tank contents falls below the suction opening.
  • 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.
  • this object is achieved by a method having the features of the independent method claim.
  • the suction lifting device provides that a ventilation opening is arranged in a section of the emptying line located between the suction opening and the outlet opening, by means of which a gas or gas mixture can be fed to the emptying line. Furthermore, a closure device is provided, by means of which said supply of the gas or the gas mixture can be prevented.
  • Vententilation opening should be understood to mean an opening which is at least partially delimited by an outer wall of the emptying line and which penetrates the outer wall of the emptying line.
  • the closure device can be designed as a closure cap, a stopper, a fitting, a valve or another component that appears sensible to a person skilled in the art.
  • an initiated suction lifting process can be reliably terminated at any time.
  • 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 safely and reliably closed by the described development in order to prevent an unintentional termination of the suction lifting process.
  • the ventilation opening in an operational orientation of the suction lifting device above the suction opening is arranged.
  • operational orientation denotes an orientation of the suction lifting device in which it is ready for operation, that is to say can work in the intended manner.
  • This operational orientation requires that the suction port be located above the outlet port.
  • a hydrostatic pressure difference can be built up within the suction lifting device.
  • the ventilation opening can be arranged in a riser pipe section or in a down pipe section.
  • a “downpipe section” is to be understood as a section of the emptying line in which a liquid falls along a direction of the gravitational force when the suction lifting device is in operation.
  • a “riser line” is to be understood as a section of the emptying line in which a liquid rises against a direction of the gravitational force during operation of the suction lifting device.
  • the term “above” is to be understood broadly in the present description. An object arranged above a reference object can be arranged along a vertical line through the reference object or away from the vertical line running through the reference object.
  • a ventilation volume and / or a required ventilation pressure required to abort the suction lifting process can be kept small.
  • An advantageous embodiment variant provides that the ventilation opening is arranged in an apex of the emptying line.
  • the ventilation opening is arranged at the apex, the ventilation volume required to abort the suction lifting process and the required ventilation pressure can be minimized.
  • the dimensioning of the components required to abort the suction lifting process can thus also be optimized, with the result that installation space can be used efficiently and weight can be saved.
  • a pressure source is provided, by means of which the gas or gas mixture that can be fed to the emptying line can be fed as a compressed gas or gas mixture.
  • a “pressure source” should be understood to mean a device which can provide a gas or gas mixture which is compressed with respect to an ambient air pressure.
  • the pressure source can be, for example, a compressor or a compressed air reservoir.
  • a pressure sink be provided, by means of which a gas or a gas mixture can be withdrawn from the emptying line.
  • a “pressure sink” should be understood to mean a device by means of which a pressure gradient starting from an ambient air pressure to a lower pressure can be provided.
  • the pressure sink can, for example, be an intake side of a compressor or an at least partially evacuated space, the internal pressure of which is lower than an ambient air pressure.
  • the withdrawn gas or gas mixture can be either a gas or gas mixture already present in the emptying line before the suction-lifting process is started or the gas or gas mixture which was added to the emptying line to terminate the suction-lifting process.
  • a first start-up or a continuation of an aborted suction lifting process can be prepared in that the pressure sink effects a transport of liquid from a tank into the downpipe section by means of the aforementioned extraction of the gas and the gas mixture from the emptying line.
  • a gas or gas mixture can preferably be withdrawn from the evacuation line through the ventilation opening by means of the pressure sink.
  • the pressure sink is designed as a suction pipe of a Venturi nozzle.
  • the gas or gas mixture can be withdrawn from the evacuation line by means of the suction pipe.
  • a light and compact pressure sink can be provided.
  • An embodiment which develops the embodiment variant described above provides 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 emptying line by means of the suction pipe.
  • the diversion device is preferably arranged downstream of an outlet side of the venturi nozzle.
  • a valve for example, can be provided as a diverting device.
  • the compressed gas or gas mixture can optionally be fed to the evacuation line or the gas or gas mixture can be withdrawn from the evacuation line.
  • a blocking element is arranged in a downpipe section of the emptying line.
  • a "blocking element” is to be understood here as a fitting which is set up to interrupt a flow of liquid.
  • a flow of liquid in the emptying line and thus the suction lifting process can be interrupted. If there is an interruption in the suction lifting process, it can be made easier to abort the suction lifting process, since the supplied gas or gas mixture is unintentionally transported away with the flow of liquid is prevented. A required ventilation volume can thus 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, an inexpensive and compact component can be used and an existing installation space can be used efficiently.
  • the suction lifting device described above can advantageously be 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 operational orientation of the suction lifting device. This variant has proven itself in practice.
  • the suction lifting device according to the invention can be operated by means of the method according to the invention.
  • the method provides that a suction lifting process is aborted by ventilating the emptying line by means of a ventilation opening located between the suction opening and the outlet opening.
  • An advantageous development provides that a flow of liquid in the emptying line is interrupted by means of the blocking element. By interrupting the flow of liquid, the suction lifting process can be interrupted.
  • An advantageous embodiment variant provides that the drain line is ventilated after the liquid flow has been interrupted. By interrupting the flow of liquid, compared to an uninterrupted suction lifting process be relieved. An operational removal of a ventilation volume can be prevented.
  • the drain line be ventilated with overpressure. In this way, a particularly reliable and rapid termination of the suction lifting process can be made possible even with larger cross-sections of the emptying line with relatively light and compact components.
  • FIG 1 shows a rail-mounted 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 by means of gravitational force.
  • the suction lifting device 10 has an emptying line 14.
  • the emptying 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.
  • a flow of liquid in the emptying line 14 can be interrupted by means of the blocking element 38.
  • 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 operational 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 by means of a suitable hydrostatic pressure difference within the suction lifting device 10.
  • a hydrostatic pressure of a liquid in the downpipe section 40 exceeds a hydrostatic pressure of a liquid in the riser section 48
  • the suitable hydrostatic pressure difference is present.
  • a suction lifting process can be started.
  • the tank 12 can then be emptied by means of the suction lifting process that has been started.
  • 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 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 emptying 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 at an apex 26 of the emptying line 14.
  • the aforementioned compressed gas mixture can be fed to the emptying line 14 by means of the ventilation opening 20.
  • 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 said supply of the gas mixture can be prevented.
  • the closure device 22 is arranged in the line 24 between the pressure source 28 and the ventilation opening 20. 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 interrupted, 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.
  • 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 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. In a suction mode of the Venturi nozzle 34, the compressed gas mixture can flow unhindered from the inlet side 44 to the outlet side 46. Due to the generally known construction of the Venturi nozzle 34, a negative pressure is generated on the suction pipe 32 as a result.
  • 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 as a pressure sink 30 in suction mode, by means of which a gas mixture can be withdrawn from the emptying line 14.
  • a diversion device 36 is provided so that the Venturi nozzle 34 can be operated in an alternative mode of operation, namely in a diversion mode.
  • the diverting device 36 is designed as a valve. By means of the diverting device 36, the compressed gas mixture can be diverted to the suction pipe 32. By closing the diversion device 36, an unimpeded flow of the compressed gas mixture from the inlet side 44 to the outlet side 46 is prevented. In the case of the closed diversion device 36, the compressed gas mixture flowing into the inlet side 44 exits to the suction pipe 32. The compressed gas mixture can thus be fed to the ventilation opening 20 by means of the Venturi nozzle 34 in the bypass mode and the emptying line 14 can be ventilated with excess pressure.
  • a downstream side of the diversion device 36 opens below the blocking element 38 into the downpipe section 40.
  • FIG 2 it is illustrated how a suction lifting process can be started, interrupted or canceled by means of the suction lifting device described above: So that a suction lifting process can be started, the blocking element 38 arranged in the downpipe section 40 must be closed. Thereupon, by means of the pressure sink 30, that is to say the Venturi nozzle 34 in a suction mode, the emptying line 14 withdrawn a gas or gas mixture. Here, due to the negative pressure in the emptying line 14, a tank content is conveyed from the tank 12 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 blocking 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. This interrupts the flow of liquid in the emptying line 14 with the blocking element 38. 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 emptying line 14 can be ventilated by means of the ventilation opening 20.
  • the drain line 14 is ventilated with overpressure.
  • the suction lifting process can be canceled both with an uninterrupted and interrupted suction lifting process.
  • the drain line 14 is ventilated with excess pressure.

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)
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 true EP3889443A1 (fr) 2021-10-06
EP3889443B1 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)

Citations (8)

* 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
AT257374B (de) * 1966-04-18 1967-10-10 Paul Bungartz In einem Zwischenbehälter angeordnete Kurztauchpumpe zum Absaugen von Flüssigkeiten aus Lagerbehältern
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
GB2289505A (en) * 1994-05-18 1995-11-22 Raymond Elliott Siphon device
EP2604909A1 (fr) * 2011-12-12 2013-06-19 Forbes Technologies Ltd Ensemble de tuyau par immersion et procédé de fonctionnement
KR102007124B1 (ko) * 2018-12-04 2019-08-02 김일 사이펀 취수 장치

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2339717A1 (de) 1973-08-06 1975-02-20 Gewerkschaften Brigitta Und El Armaturenfreie schwefelentladung aus bahn-kesselwagen

Patent Citations (8)

* 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
AT257374B (de) * 1966-04-18 1967-10-10 Paul Bungartz In einem Zwischenbehälter angeordnete Kurztauchpumpe zum Absaugen von Flüssigkeiten aus Lagerbehältern
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
GB2289505A (en) * 1994-05-18 1995-11-22 Raymond Elliott Siphon device
EP2604909A1 (fr) * 2011-12-12 2013-06-19 Forbes Technologies Ltd Ensemble de tuyau par immersion et procédé de fonctionnement
KR102007124B1 (ko) * 2018-12-04 2019-08-02 김일 사이펀 취수 장치

Also Published As

Publication number Publication date
EP3889443B1 (fr) 2024-02-14
DE102020204177A1 (de) 2021-09-30

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