EP0802329B1 - Einrichtung zur Belüftung eines Vorratstanks - Google Patents
Einrichtung zur Belüftung eines Vorratstanks Download PDFInfo
- 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
Links
Images
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)
Description
- Fig. 1
- ein Schaltbild des ersten Ausführungsbeispiels,
- Fig. 2
- einen lotrechten Mittelschnitt einer Baueinheit zur Verwirklichung des ersten Ausführungsbeispiels
- Fig. 3
- ein Schaltbild des zweiten Ausführungsbeispiels.
Claims (10)
- Belüftungseinrichtung eines geschlossenen Vorratstanks (5, 26) einer Druckflüssigkeitsanlage mit veränderlichem Druckflüssigkeitsniveau innerhalb des Vcrratstanks (5, 26); bei dereine Fluidleitung den Vorratstank (5, 26) mit einer Druckluftquelle (1, 21) verbindet,in der Fluidleitung zwischen der Druckluftquelle (1, 21) und dem Vorratstank (5, 26) ein Druckregelventil (2, 22) vorgesehen ist,das Druckregelventil (2, 22) auf eine Entspannung der Druckluft auf annähernd Atmosphärendruck in Richtung des Vorratstankes (5, 26) eingestellt ist,die Fluidleitung einen zur Atmosphäre führenden, mit einem zur Atmosphäre öffnenden Druckbegrenzungsventil (6, 28) versehenen Ausgang (7, 29) besitzt.
- Einrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Druckluftquelle (1, 21) als Abzweigung von einer außerhalb der Druckflüssigkeitsanlage erforderlichen Drucklufterzeugungsanlage ausgebildet ist. - Einrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß zwischen dem Druckregler (2) und dem Vorratstank (5) ein Aerosol-Abscheider (3) eingefügt ist. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Druckregler (2), ein an die Druckluftquelle (1) angeschlossener Drucklufteintrittsanschluß (9), ein als Einlaß (4) und Auslaß des Vorratstanks (5) dienender Anschluß (6) und eine Abluftaustrittsöffnung (7) mit vorgeschaltetem Druckbegrenzungsventil (6) in einer auf dem Vorratstank (5) montierbaren Baueinheit (11) zusammengefaßt sind. - Einrichtung nach Anspruch 4,
dadurch gekennzeichnet,
daß in der Baueinheit (11) zusätzlich ein zwischen dem Druckregler (2) und dem Anschluß (10) an den Vorratstank (5) geschaltetes erstes Rückschlagventil (12) vorgesehen ist, bei dessen Offen-Stellung einströmende Luft den Aerosolabscheider (3) umgeht. - Einrichtung nach Anspruch 4,
dadurch gekennzeichnet,
daß in der Baueinheit (11) zusätzlich ein zwischen den Anschluß (10) an den Vorratstank (5) und eine weitere Abluftaustrittsöffnung (13) geschaltetes zweites Rückschlagventil (14) vorgesehen ist, bei dessen Offen-Stellung abströmende Luft den Aerosolabscheider (3) umgeht. - Einrichtung mit den Merkmalen nach den Ansprüchen 5 und 6.
- Lüftungseinrichtung nach Anspruch 1,
gekennzeichnet durch die Merkmale,die Fluidleitung ist in ihrem zwischen dem Druckregler (22) und dem zur Atmosphäre öffnenden Druckbegrenzungsventil (28) liegenden Bereich über eine durch einen Ejektor (23) führende Zusatzleitung zusätzlich mit der Atmosphäre verbunden,der Unterdruckbereich des Ejektors (23) ist an den Vorratstank (26) angeschlossen. - Einrichtung nach Anspruch 8,
dadurch gekennzeichnet,
daß stromab des Ejektors (23) ein Aerosolabscheider (24) vorgesehen ist. - Einrichtung nach Anspruch 8 oder 9,
dadurch gekennzeichnet,
daß in der ejektorfreien Fluidleitung zwischen dem Druckbegrenzungsventil (28) an dem atmosphärischen Ausgang (29) und dem Druckregelventil (22) ein zum Vorratstank hin öffnendes Druckbegrenzungsventil (31) vorgesehen ist.
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 (de) | 1997-10-22 |
EP0802329A3 EP0802329A3 (de) | 1998-02-11 |
EP0802329B1 true EP0802329B1 (de) | 2001-08-01 |
Family
ID=7791734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97105577A Expired - Lifetime EP0802329B1 (de) | 1996-04-19 | 1997-04-04 | Einrichtung zur Belüftung eines Vorratstanks |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0802329B1 (de) |
DE (2) | DE19615475A1 (de) |
Families Citing this family (4)
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)
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 |
-
1996
- 1996-04-19 DE DE19615475A patent/DE19615475A1/de not_active Withdrawn
-
1997
- 1997-04-04 DE DE59704163T patent/DE59704163D1/de not_active Expired - Lifetime
- 1997-04-04 EP EP97105577A patent/EP0802329B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0802329A3 (de) | 1998-02-11 |
DE19615475A1 (de) | 1997-10-23 |
EP0802329A2 (de) | 1997-10-22 |
DE59704163D1 (de) | 2001-09-06 |
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