EP0802329B1 - Dispositif pour l'aération d'un réservoir - Google Patents

Dispositif pour l'aération d'un réservoir Download PDF

Info

Publication number
EP0802329B1
EP0802329B1 EP97105577A EP97105577A EP0802329B1 EP 0802329 B1 EP0802329 B1 EP 0802329B1 EP 97105577 A EP97105577 A EP 97105577A EP 97105577 A EP97105577 A EP 97105577A EP 0802329 B1 EP0802329 B1 EP 0802329B1
Authority
EP
European Patent Office
Prior art keywords
storage tank
compressed air
pressure
valve
ejector
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.)
Expired - Lifetime
Application number
EP97105577A
Other languages
German (de)
English (en)
Other versions
EP0802329A3 (fr
EP0802329A2 (fr
Inventor
Alfred Gröner
Gerhard Steiner
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.)
Mahle Filtersysteme GmbH
Original Assignee
Mahle Filtersysteme 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 Mahle Filtersysteme GmbH filed Critical Mahle Filtersysteme GmbH
Publication of EP0802329A2 publication Critical patent/EP0802329A2/fr
Publication of EP0802329A3 publication Critical patent/EP0802329A3/fr
Application granted granted Critical
Publication of EP0802329B1 publication Critical patent/EP0802329B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • F15B1/265—Supply reservoir or sump assemblies with pressurised main reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding

Definitions

  • the invention relates to a device for ventilation a storage tank of a system working with hydraulic fluid, when changing the level of liquid in the Storage tank occur, the latter above the level of Liquid has an inlet for dried air.
  • No. 2,208,451 and FR 2 370 186 A are gas-liquid motors, respectively known in which gas pressures in pressure vessels act on the liquid level. Determine the gas pressures there in each case the level of the liquid levels and thus the working positions of those engines.
  • the invention deals with the problem of a ventilation device a closed tank, the liquid level of which is not from the gas loaded on the liquid is to be influenced, train such that dried air without using a special air dryer can be provided.
  • the compressed air is approximately at atmospheric pressure relaxed and in this state the storage tank supplied, in which a slight excess pressure can form.
  • the Inflow of relaxed air is based on the amount of air limited liquid withdrawn from the storage tank.
  • An advantageous embodiment of the device results in that the compressed air source as a branch from an outside the system required compressed air generation system is trained. This can be particularly useful if the system in one device, such as a mobile Construction machine with air brake device, located in the a compressed air generation system must be present anyway.
  • the relaxed air comes from the compressed air source it contains residual moisture and / or impurities advantageous that between the pressure regulator and the inlet Aerosol separator is inserted.
  • the aerosol separator can thus also with the tank ventilation from the tank liquid Filter out any entrained contaminants.
  • a compact construction of the device results from that the pressure regulator, one connected to the compressed air source Compressed air inlet connection, one as inlet and outlet of the Storage tanks serving connection and an exhaust air outlet with an upstream pressure relief valve in one the storage tank mountable unit are summarized.
  • the device can thus be fully assembled in the system to be built in.
  • the unit can additionally one between the pressure regulator and the connection first check valve connected to the storage tank is provided be in the open position of the inflowing air Bypasses aerosol separator, and / or one between the connector connected to the storage tank and a further exhaust air outlet second check valve may be provided at the Air flowing out in the open position bypasses the aerosol separator.
  • Another option using compressed air from a Compressed air source in such storage tanks the formation of Condensation and the resulting premature aging of the Liquid, corrosion, increased wear and when appropriate Avoiding icing temperatures is to by means of an air driven ejector in the storage tank a negative pressure through its outlet generate, whereby air is sucked out of the storage tank, and connected in parallel for this purpose the inlet of the storage tank via a pressure regulator from the compressed air source ventilate.
  • the negative pressure in the storage tank causes a lowering of the water vapor partial pressure and thus degassing the liquid.
  • the air sucked out of the storage tank can contain aerosols, which in a Ejector downstream aerosol separator to be excreted Exhaust air outlet connects.
  • the storage tank is also vented via the pressure regulator Vacuum relief valve that prevents the creation of an excessive vacuum in the Storage tank prevented.
  • a pressure relief valve leading to the exhaust air outlet can also be attached to the storage tank be connected directly or indirectly, in the event of sudden backflow a larger amount of liquid, the outflow of air from the storage tank enables and thus an undesirable increase in pressure in the storage tank prevented.
  • a pressure regulator 2 is connected downstream of a compressed air source 1.
  • an aerosol separator 3 which is connected via a line is connected to an inlet 4 of a storage tank 5.
  • the inlet 4 serves at the same time as the outlet of the storage tank 5, the separator via the line connection and the aerosol 3 is connected to a pressure relief valve 6, to which a Exhaust air outlet 7 connects. Liquid is withdrawn from the storage tank 5 and liquid flows back into them, as indicated by arrows.
  • the structural unit 11 shown in FIG. 2 has a housing 8 which is connected to the compressed air source 1 connected compressed air inlet connection 9 on the pressure regulator 2 with a space in the housing 8 enclosing the aerosol separator 3 in Connection is established.
  • the space formed within the aerosol separator 3 opens out below in a port 10, the inlet 4 to the storage tank 5 and also as Outlet from the storage tank 5 is used.
  • the aerosol separator 3 in the housing 8 enclosing space is above the pressure relief valve 6 with the exhaust outlet 7 in connection.
  • a first check valve 12 is connected, air flowing in at its open position bypasses the aerosol separator 3.
  • a second check valve 14 switches a second check valve 14, at its open position, air flowing out bypasses the aerosol separator 3.
  • a compressed air source 21 is followed by a pressure regulator 22.
  • This is an ejector 23, which in turn is an aerosol separator 24 and this is followed by an exhaust air outlet opening 27.
  • the pressure regulator 22 branches off a line connection that via a vacuum relief valve 31 leads to an inlet 25 of a storage tank 26.
  • a pressure relief valve between inlet 25 and vacuum relief valve 31 28 connected which leads to an exhaust air outlet 29.
  • a further line connection Outlet 30 of the storage tank 26 is finally a further line connection Outlet 30 of the storage tank 26 connected.
  • the storage tank 26 becomes liquid withdrawn and liquid flows back into these, as indicated by arrows.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Claims (10)

  1. Dispositif pour l'aération d'un réservoir fermé (5, 26) d'une installation de liquide sous pression d'un niveau de liquide variable à l'intérieur du réservoir (5, 26), dispositif sur lequel
    une conduite de fluide relie le réservoir (5, 26) à une source d'air comprimé (1, 21),
    un détendeur (2, 22) est prévu dans la conduite de fluide entre la source d'air comprimé (1, 21) et le réservoir (5, 26),
    le détendeur (2, 22) est réglé sur une détente de l'air comprimé à peu près à la pression atmosphérique en direction du réservoir (5, 26),
    la conduite de fluide présente une sortie (7, 29) menant à l'atmosphère et munie d'un limiteur de pression (6, 28) ouvrant à l'atmosphère.
  2. Dispositif suivant la revendication 1, caractérisé en ce que la source d'air comprimé (1, 21) est réalisée sous forme de dérivation d'une installation de compression d'air requise à l'extérieur de l'installation de liquide sous pression.
  3. Dispositif suivant l'une des revendications 1 et 2, caractérisé en ce qu'un séparateur d'aérosol 3 est inséré entre le détendeur (2) et le réservoir (5).
  4. Dispositif suivant l'une des revendications précédentes, caractérisé en ce que le détendeur (2), un raccord d'admission d'air comprimé (9) raccordé à la source d'air comprimé (1), un raccord (10) servant d'admission (4) et d'échappement pour le réservoir (5), et une ouverture de sortie d'air d'échappement (7) avec un limiteur de pression amont (6), sont regroupés dans une unité de montage (11) pouvant être montée sur le réservoir (5).
  5. Dispositif suivant la revendication 4, caractérisé en ce qu'un premier clapet anti-retour (12), en position d'ouverture duquel de l'air d'admission contourne le séparateur d'aérosol (3), est monté en supplément dans l'unité de montage (11) entre le détendeur (2) et le raccord (10) au réservoir (5).
  6. Dispositif suivant la revendication 4, caractérisé en ce qu'un second clapet anti-retour (14), en position d'ouverture duquel de l'air d'échappement contourne le séparateur d'aérosol (3), est monté en supplément dans l'unité de montage (11) entre le raccord (10) au réservoir (5) et une autre ouverture de sortie d'air d'échappement (13).
  7. Dispositif avec les caractéristiques suivant les revendications 5 et 6.
  8. Dispositif d'aération suivant la revendication 1,
       caractérisé par les caractéristiques,
    dans sa zone située entre le détendeur (22) et le limiteur de pression (28) ouvrant à l'atmosphère, la conduite de fluide est reliée en supplément à l'atmosphère par l'intermédiaire d'une conduite d'appoint passant par un éjecteur (23),
    la zone de dépression de l'éjecteur (23) est raccordée au réservoir (26).
  9. Dispositif suivant la revendication 8, caractérisé en ce qu'un séparateur d'aérosol (24) est prévu en aval de l'éjecteur (23).
  10. Dispositif suivant l'une des revendications 8 et 9, caractérisé en ce qu'un clapet de sécurité à minimum de pression (31), ouvrant en direction du réservoir, est prévu dans la conduite de fluide sans éjecteur entre le limiteur de pression (28) sur la sortie à l'atmosphère (29) et le détendeur (22).
EP97105577A 1996-04-19 1997-04-04 Dispositif pour l'aération d'un réservoir Expired - Lifetime EP0802329B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19615475 1996-04-19
DE19615475A DE19615475A1 (de) 1996-04-19 1996-04-19 Einrichtung zur Belüftung eines Vorratstanks

Publications (3)

Publication Number Publication Date
EP0802329A2 EP0802329A2 (fr) 1997-10-22
EP0802329A3 EP0802329A3 (fr) 1998-02-11
EP0802329B1 true EP0802329B1 (fr) 2001-08-01

Family

ID=7791734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97105577A Expired - Lifetime EP0802329B1 (fr) 1996-04-19 1997-04-04 Dispositif pour l'aération d'un réservoir

Country Status (2)

Country Link
EP (1) EP0802329B1 (fr)
DE (2) DE19615475A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10002118A1 (de) * 2000-01-20 2001-07-26 Mann & Hummel Filter Ausgleichsbehälter eines Hydrauliksystems
DE102007052023A1 (de) * 2007-10-31 2009-05-07 Trw Automotive Gmbh Hydraulikfluidspeicher sowie hydraulisches Servolenksystem mit einem solchen Hydraulikfluidspeicher
CN102357974B (zh) * 2011-09-28 2016-02-03 无锡锦和科技有限公司 自封式大通流量排气罐
FR3030650B1 (fr) * 2014-12-17 2017-01-13 Technoboost Circuit hydraulique comprenant un reservoir tres basse pression mis en depression

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2208451A (en) * 1938-11-18 1940-07-16 Gen Electric Hydraulic mechanism
GB580604A (en) * 1944-06-19 1946-09-13 Automotive Prod Co Ltd Improvements in or relating to liquid circulating systems
DE2618372A1 (de) * 1976-04-27 1977-11-17 Franz Walter Kontinuierlich arbeitender druckmittelwandler
DE2650802C2 (de) * 1976-11-03 1981-10-08 Borsig Gmbh, 1000 Berlin Gas-Öl-Antrieb
US4827719A (en) * 1983-11-14 1989-05-09 Paoluccio John A Closed hydraulic system with drying means
DE8511057U1 (de) * 1985-04-16 1985-10-03 Bodendorfer, Gerhard, 7505 Ettlingen Druckhaltekopf
HU201705B (en) * 1988-11-04 1990-12-28 Autoipari Kutato Fejlesztoe Vehicle air dryer with control gear particularly for pressure air systems
DE4031494C2 (de) * 1990-10-05 1994-07-21 Bundesrep Deutschland Hydraulikölbehälter

Also Published As

Publication number Publication date
EP0802329A3 (fr) 1998-02-11
EP0802329A2 (fr) 1997-10-22
DE19615475A1 (de) 1997-10-23
DE59704163D1 (de) 2001-09-06

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