EP0271702A2 - Oil container for supplying hydraulic working circuits serving for accumulation and resumption of returned oil - Google Patents

Oil container for supplying hydraulic working circuits serving for accumulation and resumption of returned oil Download PDF

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Publication number
EP0271702A2
EP0271702A2 EP87116360A EP87116360A EP0271702A2 EP 0271702 A2 EP0271702 A2 EP 0271702A2 EP 87116360 A EP87116360 A EP 87116360A EP 87116360 A EP87116360 A EP 87116360A EP 0271702 A2 EP0271702 A2 EP 0271702A2
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EP
European Patent Office
Prior art keywords
oil
oil container
space
container according
container
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
EP87116360A
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German (de)
French (fr)
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EP0271702B1 (en
EP0271702A3 (en
Inventor
Rudolf Hörmann
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.)
MAN Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge AG
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Publication date
Application filed by MAN Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Priority to AT87116360T priority Critical patent/ATE81388T1/en
Publication of EP0271702A2 publication Critical patent/EP0271702A2/en
Publication of EP0271702A3 publication Critical patent/EP0271702A3/en
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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86187—Plural tanks or compartments connected for serial flow
    • Y10T137/86212—Plural compartments formed by baffles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86187—Plural tanks or compartments connected for serial flow
    • Y10T137/86228—With communicating opening in common walls of tanks or compartments
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86292—System with plural openings, one a gas vent or access opening
    • Y10T137/86324—Tank with gas vent and inlet or outlet

Definitions

  • the invention relates to an oil tank for supplying oil to hydraulic working groups with a storage function, in particular of hydrostatic drive, braking, braking energy recovery and working devices in vehicles, lifting, conveying and similar systems, and for the recovery of returned oil.
  • hydraulic oil is fed to the hydraulic working groups of a system by means of a pump.
  • the oil that is returned to the oil container is leakage oil or e.g. through pressure relief valves, controlled oil.
  • This returned hydraulic oil is usually at an elevated temperature and can be permeated with air and microparticles.
  • the hydraulic oil to be returned from the oil tank to the circuit should not exceed a certain temperature, be clean and free of bubbles. External cooling devices, filters and air separators have hitherto been provided for this. However, this considerably increases the cost and the space requirement of the system as such.
  • it can e.g. for repair purposes, it may be necessary to drain the oil absorbed by the accumulator, which forms part of a hydraulic working circuit. As a rule, separate containers must also be provided for this.
  • the oil tank is divided into several functional rooms by internal partitions, namely a collecting room for receiving at least a large part of the system's internal oil volume as required, a feed room for leakage or diverted oil, an outlet connecting the latter, separated from it by an oil-permeable partition and a storage space, which connects to the transition space at the outlet thereof, separated from it by an also oil-permeable, functionally identical partition wall.
  • a collecting room for receiving at least a large part of the system's internal oil volume as required
  • a feed room for leakage or diverted oil an outlet connecting the latter, separated from it by an oil-permeable partition
  • a storage space which connects to the transition space at the outlet thereof, separated from it by an also oil-permeable, functionally identical partition wall.
  • the solution according to the invention thus provides an advantageous way of cooling, filtering, calming and freeing air from the oil returned to it with a single oil container, so that an excellently prepared oil that can be fed back into the hydraulic working groups is then restored in the reservoir of the oil container Oil is available.
  • the collection room can e.g. in the event of repairs, the oil is drained from the work groups and in particular from the store (s) and returned to the system after the repairs have been completed. As a result, the cumbersome provision of independent drain containers can be omitted.
  • the oil tank designated by (1) in the drawing is assigned to a hydraulic system with hydraulic working circuits and one or more hydraulic accumulators (HDS, NDS) - see FIG. 4.
  • This hydraulic system can, for example, be part of hydrostatic drive devices, braking devices, braking energy recovery devices, working devices in vehicles, for example commercial vehicles, lifting, conveying or similar systems.
  • the oil container (1) consists of an outer wall (2), a bottom (3) and a cover (4).
  • a number of functional rooms are provided in the oil tank (1), namely a collecting room (5), a feed-in room (6), a transfer room (7) and a storage room (8). These functional spaces are separated from one another by the internal division of the oil container (1) by partitions.
  • the gathering Space (5) which is used for receiving at least a large part of the system-internal oil quantity, for example in the case of repairs, is realized by providing an intermediate floor (9) which forms a partition and divides the oil container (1) transversely and in the illustrated embodiment together with the upper part of the container limits the collection space (5).
  • the lower part of the container is divided by an impermeable partition (10) and two oil-permeable partition walls (11, 12) adjoining it at the ends, on both sides, to form the feed space (6), transfer space (7) and storage space (8).
  • the partitions (10, 11, 12) each extend from the inside of the outer wall (2) of the oil tank (1) between the oil tank bottom (3) and the intermediate floor (9).
  • the feed space (6) serves to accommodate leakage or oil that has been shut off from the hydraulic working circuits, whereby on the outer wall (2) of the oil reservoir (1) area of the feed space (6) there is an opening and, taking the same outside, precautions, e.g. in Form of a connection block (13), for the connection of leakage oil and control return lines (14, 15) are provided.
  • the outlet of the feed space (6), separated from it by the oil-permeable wall (11), is connected to the transfer space (7).
  • the latter is connected to the collecting space (5) via a line (17) which can be shut off, for example by means of a tap (16), optionally also a remote-controllable valve.
  • a line (17) which can be shut off, for example by means of a tap (16), optionally also a remote-controllable valve.
  • the transfer space (7) is connected to the storage space (8), the transfer space (7) being separated from the storage space (8) by the oil-permeable partition (12).
  • the leakage oil returned to the oil tank (1) or the oil that is diverted from the hydraulic working circuits first arrives in the feed space (6), as can be seen in the diagram according to FIG. 4, and then flows further through the oil-permeable partition (11) into the transfer space ( 7) and then through the oil-permeable partition (12) into the storage room (8).
  • the oil fed into the feed space (6) is calmed, cooled, filtered and any air components present are removed. Calming, filtering and air separation take place on and in connection with the oil-permeable partition walls (11, 12).
  • the rooms (5, 6, 7, 8) are assigned corresponding display instruments for displaying the respective oil level.
  • These can be attached directly to the oil tank (1) and / or for remote monitoring with appropriate, on or in the oil tank (1) attached level sensors via sensor lines.
  • a sight glass (22) for the oil level in the upper control space (7), a sight glass (29) for the oil level in the collecting space (S) and a level sensor (23) are assigned to the storage space (8).
  • the level sensor (23) is arranged with its oil level sensor elements (25) in or on a riser pipe (24) which is attached to the intermediate floor (9) and extends through the collecting space (5) to the top of the oil container (1).
  • This riser pipe (24) is provided with a cover (26) on which a level sensor (23) is arranged.
  • the two oil-permeable partitions (11, 12) are preferably arranged interchangeably in the oil container (1) and in this case can be inserted or removed, for example, from the bottom (3) or the outer wall (2) of the oil container (1) through corresponding openings and insertion elements accommodated internally in corresponding guides can be formed, which is the case and indicated schematically in the exemplary embodiment shown.
  • the oil container (1) is equipped with a removable cover (4), optionally also with a removable bottom (3) or removable outer wall parts.
  • the oil tank (1) is arranged at a suitable point in the system to be supplied with oil. If the ambient conditions to which the oil container (1) is exposed, in particular the ambient air conditions and ambient temperature conditions, are not sufficient for sufficient cooling of the oil container (1), then an additional cooling device must be assigned to it, which can be effective on the outside and / or its interior, for example, as shown in FIG. 5, in the form of cooling coils (27).
  • an additional cooling device must be assigned to it, which can be effective on the outside and / or its interior, for example, as shown in FIG. 5, in the form of cooling coils (27).
  • temperature sensors (28) can be provided, which can be used with external display instruments and, if necessary, with regulating devices for controlling the coolant supply Oil container (1) are connected.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Abstract

Das von hydraulischen Arbeitskreisen durch Leckage oder Absteuerung zum Ölbehälter rückgeleitete Öl ist in der Regel erwärmt, kann zumindest geringfügig verunreinigt und mit Luft durchsetzt sein. Außerdem erfolgt die Rückleitung, zumindest des abgesteuerten Öles, unter einem gewissen Druck, was im Ölbehälter zu einer starken Beunruhigung des dort bevorrateten Öles führt. Außerdem ist es z.B. für Reparaturen notwendig, zumindest Teile der hydraulischen Arbeitskreise, insbesondere deren Speicher abzulassen, wofür bisher entsprechende Behälter bereitgestellt werden mußten. Ziel der Erfindung ist es, den Ölbehälter so auszubilden, daß er über seine normale Reservoirfunktion hinaus auch andere Funktionen übernehmen kann. Es wird ein als Multifunktionsorgan ausgebildeter Ölbehälter (1) geschaffen, der durch interne Trennwände (9, 10, 11, 12) in mehrere Funktionsräume unterteilt ist, nämlich einen Sammelraum (5) zum bedarfsweisen Aufnehmen zumindest eines Großteils der systeminternen Ölmenge, einen Einspeiseraum (6) für Leckage- bzw.abgesteuertes Öl, einen sich ausgangs des letzteren anschließenden, von diesem durch eine öldurchlässige Trennwand (11) getrennten Überleitraum (7) und einen sich an letzterem ausgangs desselben anschließenden, von diesem durch eine ebenfalls öldurchlässige Trennwand getrennten Vorratsraum (8). Das in den Ölbehälter eingeleitete Leckage- bzw. abgesteuerte Öl wird beim Durchströmen des Einspeiseraumes (6) und Überleitraumes (7) zum Vorratsraum (8) gekühlt, beruhigt, gefiltert und von Luftanteilen getrennt. Gegebenenfalls sind im Ölbehälter (1) auch Mittel (24, 25) für eine Regelung zumindestens der von einem der Räume (5, 6, 7, 8) aufnehmbaren Ölmenge vorgesehen.The oil returned to the oil tank by hydraulic working groups through leakage or control is usually warmed up, can be at least slightly contaminated and mixed with air. In addition, the return line, at least of the oil that has been shut off, takes place under a certain pressure, which in the oil container leads to severe disturbance of the oil stored there. It is also e.g. for repairs necessary to drain at least parts of the hydraulic working groups, in particular their storage, for which previously appropriate containers had to be provided. The aim of the invention is to design the oil container so that it can also perform other functions beyond its normal reservoir function. An oil container (1) designed as a multi-functional organ is created, which is divided into several functional rooms by internal partition walls (9, 10, 11, 12), namely a collecting room (5) for receiving at least a large part of the system's internal oil volume, a feed room ( 6) for leakage or controlled oil, an outlet connecting the latter, separated from it by an oil-permeable partition (11), and a transfer chamber (7) adjoining the latter, separated from the latter by a likewise oil-permeable partition ( 8th). The leakage or discharged oil introduced into the oil container is cooled, calmed, filtered and separated from air components when it flows through the feed space (6) and transfer space (7) to the storage space (8). Optionally, means (24, 25) for regulating at least the amount of oil that can be received by one of the rooms (5, 6, 7, 8) are provided in the oil container (1).

Description

Die Erfindung betrifft einen Ölbehälter zur Ölversorgung von hydraulischen Arbeitskreisen mit Speicherfunktion, insbeson­dere von hydrostatischen Antriebs-, Brems-, Bremsenergie­rückgewinnungs- und Arbeitseinrichtungen in Fahrzeugen, Hub-, Förder- und dergleichen Anlagen, und zur Wiederaufnahme rück­geleiteten Öles.The invention relates to an oil tank for supplying oil to hydraulic working groups with a storage function, in particular of hydrostatic drive, braking, braking energy recovery and working devices in vehicles, lifting, conveying and similar systems, and for the recovery of returned oil.

Aus einem solchen Ölbehälter wird mittels einer Pumpe Hydrau­liköl den hydraulischen Arbeitskreisen einer Anlage zugeführt. Bei dem Öl, das in den Ölbehälter rückgeleitet wird, handelt es sich um Leckageöl oder um, z.B. durch Druckbegrenzungsven­tile, abgesteuertes Öl. Dieses rückgeleitete Hydrauliköl hat in der Regel eine erhöhte Temperatur und kann mit Luft und Mikro­partikeln durchsetzt sein. Üblicherweise sollte das aus dem Ölbehälter in den Kreislauf rückzuführende Hydrauliköl eine bestimmte Temperatur nicht überschreiten, sauber und blasen­frei sein. Hierfür sind bislang externe Kühlvorrichtungen, Filter und Luftabscheider vorgesehen worden. Dies erhöht je­doch in beträchtlichem Umfang den Kostenaufwand sowie den Platzbedarf der Anlage als solches. Darüber hinaus kann es z.B. für Reparaturzwecke notwendig sein, daß aus einem Speicher, der ein Teil eines hydraulischen Arbeitskreises bildet, das von diesem aufgenommene Öl abgelassen werden muß. Auch hierfür sind in der Regel eigene Behälter bereitzustellen.From such an oil tank, hydraulic oil is fed to the hydraulic working groups of a system by means of a pump. The oil that is returned to the oil container is leakage oil or e.g. through pressure relief valves, controlled oil. This returned hydraulic oil is usually at an elevated temperature and can be permeated with air and microparticles. Usually, the hydraulic oil to be returned from the oil tank to the circuit should not exceed a certain temperature, be clean and free of bubbles. External cooling devices, filters and air separators have hitherto been provided for this. However, this considerably increases the cost and the space requirement of the system as such. In addition, it can e.g. for repair purposes, it may be necessary to drain the oil absorbed by the accumulator, which forms part of a hydraulic working circuit. As a rule, separate containers must also be provided for this.

Es ist daher Aufgabe der Erfindung, den Ölbehälter der ein­gangs genannten Art so auszubilden, daß er über seine Funktion als Ölreservoir hinaus auch Zusatzfunktionen übernehmen kann.It is therefore an object of the invention to design the oil container of the type mentioned at the outset in such a way that it can also take on additional functions in addition to its function as an oil reservoir.

Diese Aufgabe ist erfindungsgemäß durch einen als Multifunk­tionsorgan ausgebildeten Ölbehälter mit Merkmalen der im An­spruch 1 gekennzeichneten Art gelöst.This object is achieved according to the invention by an oil container designed as a multifunctional organ with features of the type characterized in claim 1.

Hierzu ist der Ölbehälter durch interne Trennwände in mehrere Funktionsräume unterteilt, nämlich einen Sammelraum zum be­darfsweisen Aufnehmen zumindest eines Großteils der systemin­ternen Ölmenge, einen Einspeiseraum für Leckage- bzw. abgesteu­ertes Öl, einen sich ausgangs des letzteren anschließenden, von diesem durch eine öldurchlässige Trennwand getrennten Überleit­raum und einem Vorratsraum, der sich am Überleitraum ausgangs desselben, getrennt von diesem durch eine ebenfalls öldurchläs­sige, funktionsmäßig gleich wie die andere wirkende Trennwand, anschließt. Hierdurch wird in den Ölbehälter rückgeleitetes Öl beim Durchströmen vom Einspeiseraum über den Überleitraum zum Vorratsraum gekühlt, beruhigt, gefiltert und von Luftanteilen befreit.For this purpose, the oil tank is divided into several functional rooms by internal partitions, namely a collecting room for receiving at least a large part of the system's internal oil volume as required, a feed room for leakage or diverted oil, an outlet connecting the latter, separated from it by an oil-permeable partition and a storage space, which connects to the transition space at the outlet thereof, separated from it by an also oil-permeable, functionally identical partition wall. As a result, oil returned to the oil tank is cooled, calmed, filtered and freed of air as it flows through from the feed-in room via the transfer room to the storage room.

Mit der erfindungsgemäßen Lösung wird somit ein vorteilhafter Weg angegeben, wie mit einem einzigen Ölbehälter das in diesen rückgeleitete Öl gekühlt, gefiltert, beruhigt und von Luftan­teilen befreit werden kann, so daß im Vorratsraum des Ölbehäl­ters dann wieder ein hervorragend aufbereitetes, in die hydrau­lischen Arbeitskreise rückspeisbares Öl zur Verfügung steht. In den Sammelraum kann z.B. bei Reparaturen das Öl aus den Ar­beitskreisen und insbesondere dem bzw. den Speichern abgelas­sen und nach Beendigung der Reparaturen auch wieder in das System rückgeleitet werden. Hierdurch kann die umständliche Bereithaltung von eigenständigen Ablaßbehältern entfallen.The solution according to the invention thus provides an advantageous way of cooling, filtering, calming and freeing air from the oil returned to it with a single oil container, so that an excellently prepared oil that can be fed back into the hydraulic working groups is then restored in the reservoir of the oil container Oil is available. The collection room can e.g. in the event of repairs, the oil is drained from the work groups and in particular from the store (s) and returned to the system after the repairs have been completed. As a result, the cumbersome provision of independent drain containers can be omitted.

Vorteilhafte Ausgestaltungen und Weiterbildungen des erfin­dungsgemäßen Ölbehälters sind in den Unteransprüchen gekenn­zeichnet.Advantageous refinements and developments of the oil container according to the invention are characterized in the subclaims.

Nachstehend sind Einzelheiten des erfindungsgemäßen Ölbehälters anhand der Zeichnung näher erläutert. In der Zeichnung zeigen:

  • Figur 1 weitgehend schematisiert ein Ausführungsbeispiel des Ölbehälters in Perspektivansicht,
  • Figur 2 einen Längsschnitt durch den Ölbehälter gemäß Figur 1,
  • Figur 3 eine Draufsicht auf den Ölbehälter gemäß Figur 1,
  • Figur 4 den Funktionsweg des in den Ölbehälter gemäß Figur 1 rückgeleiteten Öles,
  • Figur 5 eine Variante des Ölbehälters gemäß Figur 1 mit zu­sätzlicher Kühlung des in diesen rückgeleiteten Öles.
Details of the oil container according to the invention are explained in more detail below with reference to the drawing. The drawing shows:
  • FIG. 1 largely schematically shows an exemplary embodiment of the oil container in perspective view,
  • FIG. 2 shows a longitudinal section through the oil container according to FIG. 1,
  • FIG. 3 shows a top view of the oil container according to FIG. 1,
  • FIG. 4 shows the functional path of the oil returned to the oil container according to FIG. 1,
  • Figure 5 shows a variant of the oil container according to Figure 1 with additional cooling of the oil returned in this.

Der in der Zeichnung mit (1) bezeichnete Ölbehälter ist einem Hydrosystem mit hydraulischen Arbeitskreisen und einem oder mehreren hydraulichen Speichern (HDS, NDS) - siehe Figur 4 - ­zugeordnet. Dieses Hydrosystem kann beispielsweise Teil von hydrostatischen Antriebseinrichtungen, Bremseinrichtungen, Bremsenergierückgewinnungseinrichtungen, Arbeitseinrichtungen in Fahrzeugen, beispielsweise Nutzfahrzeugen, Hub-, Förder- ­oder dergleichen Anlagen sein.The oil tank designated by (1) in the drawing is assigned to a hydraulic system with hydraulic working circuits and one or more hydraulic accumulators (HDS, NDS) - see FIG. 4. This hydraulic system can, for example, be part of hydrostatic drive devices, braking devices, braking energy recovery devices, working devices in vehicles, for example commercial vehicles, lifting, conveying or similar systems.

Der Ölbehälter (1) besteht aus einer Außenwand (2), einem Bo­den (3) und einem Deckel (4). Im Ölbehälter (1) sind mehrere Funktionsräume vorgesehen, nämlich ein Sammelraum (5), ein Ein­speiseraum (6), ein Überleitraum (7) und ein Vorratsraum (8). Diese Funktionsräume sind durch interne Aufteilung des Ölbehäl­ters (1) durch Trennwände gegeneinander abgegrenzt. Der Sammel­ raum (5), welcher zum bedarfsweisen Aufnehmen zumindest eines Großteils der systeminternen Ölmenge beispielsweise im Falle der Reparatur dient, ist durch das Vorsehen eines eine Trenn­wand bildenden Zwischenbodens (9) realisiert, der den Ölbehäl­ter (1) quer unterteilt und beim dargestellten Ausführungsbei­spiel zusammen mit dem oberen Behälterteil raummäßig den Sam­melraum (5) begrenzt. Der untere Behälterteil ist beim darge­stellten Ausführungsbeispiel durch eine undurchlässige Trenn­wand (10) sowie zwei sich endseitig, beiderseits derselben an­schließende öldurchlässige Trennwände (11, 12) zur Bildung des Einspeiseraumes (6), Überleitraumes (7) und Vorratsraumes (8) unterteilt. Dabei erstrecken sich die Trennwände (10, 11, 12) jeweils von der Innenseite der Außenwand (2) des Ölbehäl­ters (1) ausgehend zwischen dem Ölbehälter-Boden (3) und dem Zwischenboden (9). Der Einspeiseraum (6) dient zur Aufnahme von Leckage- bzw. aus den hydraulischen Arbeitskreisen abge­steuertem Öl, wobei an der Außenwand (2) des Ölbehälters (1) Bereich des Einspeiseraumes (6) eine Öffnung und unter Abdek­kung derselben außen davor Vorkehrungen, z.B. in Form eines An­schlußblockes (13), für den Anschluß von Leckageöl- und Ab­steuerrückleitungen (14, 15) vorgesehen sind. Ausgangs des Ein­speiseraumes (6) schließt sich, von diesem getrennt durch die öldurchlässige Wand (11), der Überleitraum (7) an. Letzterer ist über eine, beispielsweise mittels eines Hahnes (16), gegebe­fenfalls auch ein fernsteuerbares Ventil, absperrbare Leitung (17) mit dem Sammelraum (5) verbunden. Auf diese Weise ist eine Ein­leitung von Öl aus dem System und Wiedereinleitung dieses Öles in das System ölbehälterintern über den Überleitraum (7) durch­führbar. Das aus dem System abzulassende Öl könnte jedoch auch direkt dem Sammelraum (5) zugeführt und gegebenenfalls aus diesem auch direkt wieder in das System rückgeleitet werden.The oil container (1) consists of an outer wall (2), a bottom (3) and a cover (4). A number of functional rooms are provided in the oil tank (1), namely a collecting room (5), a feed-in room (6), a transfer room (7) and a storage room (8). These functional spaces are separated from one another by the internal division of the oil container (1) by partitions. The gathering Space (5), which is used for receiving at least a large part of the system-internal oil quantity, for example in the case of repairs, is realized by providing an intermediate floor (9) which forms a partition and divides the oil container (1) transversely and in the illustrated embodiment together with the upper part of the container limits the collection space (5). In the illustrated embodiment, the lower part of the container is divided by an impermeable partition (10) and two oil-permeable partition walls (11, 12) adjoining it at the ends, on both sides, to form the feed space (6), transfer space (7) and storage space (8). The partitions (10, 11, 12) each extend from the inside of the outer wall (2) of the oil tank (1) between the oil tank bottom (3) and the intermediate floor (9). The feed space (6) serves to accommodate leakage or oil that has been shut off from the hydraulic working circuits, whereby on the outer wall (2) of the oil reservoir (1) area of the feed space (6) there is an opening and, taking the same outside, precautions, e.g. in Form of a connection block (13), for the connection of leakage oil and control return lines (14, 15) are provided. The outlet of the feed space (6), separated from it by the oil-permeable wall (11), is connected to the transfer space (7). The latter is connected to the collecting space (5) via a line (17) which can be shut off, for example by means of a tap (16), optionally also a remote-controllable valve. In this way, oil can be introduced from the system and this oil can be reintroduced into the system inside the oil tank via the transfer chamber (7). The oil to be drained from the system could, however, also be fed directly to the collecting space (5) and, if necessary, returned directly to the system.

Außerdem steht der Überleitraum (7) mit dem Vorratsraum (8) in Verbindung, wobei der Überleitraum (7) ausgangs vom Vorrats­raum (8) durch die öldurchlässige Trennwand (12) getrennt ist. Das in den Ölbehälter (1) rückgeleitete Leckageöl bzw. aus den hydraulischen Arbeitskreisen abgesteuerte Öl gelangt, wie aus dem Schema gemäß Figur 4 ersichtlich, zunächst in den Einspeiseraum (6) und fließt dann weiter durch die öldurch­lässige Trennwand (11) in den Überleitraum (7) und von diesem dann durch die öldurchlässige Trennwand (12) in den Vorratsraum (8). Während dieser Durchströmung wird das in den Einspeiseraum (6) eingespeiste Öl beruhigt, gekühlt, gefiltert und von etwaigen vorhandenen Luftanteilen befreit. Die Beruhigung, Filterung und Luftabscheidung erfolgt dabei an und in Verbindung mit den öldurchlässigen Trennwänden (11, 12). Im Bereich des Vorratsraumes (8) sind an der Außen­wand (2) des Ölbehälters (1) Vorkehrungen, z.B. ein Rohrstut­zen (18) mit Anschlußflansch, zur Herstellung der Verbindung mit einer Pumpe (P) vorgesehen, mit der Öl aus dem Vorrats­raum (8) in die hydraulischen Arbeitskreise einspeisbar ist. Am Vorratsraum (8) ist des weiteren ein bis zur Außenseite des Ölbehälters (1) führender Öleinfüllstutzen (19) ange­schlossen, der beim dargestellten Ausführungsbeispiel am Zwischenboden (9) befestigt, insbesondere angeschweißt ist, nach oben aus dem Ölbehälter (1) herausragt und dort durch einen Deckel (20) mit Entlüftungsvorrichtung verschließbar ist. Ferner ist zumindest einem Großteil, vorzugsweise jedoch der Räume (5, 6, 7, 8) jeweils eine Ölablaßschraube (21) an geeig­neter Stelle der Außenseite des Ölbehälters (1) zugeordnet. Darüber hinaus sind zumindest einem Teil der Räume (5, 6, 7, 8) zur Anzeige des jeweiligen Ölfüllstandes entsprechende Anzeige­instrumente zugeordnet. Diese können direkt am Ölbehälter (1) angebracht und/oder für Fernüberwachung mit entsprechenden, am bzw. im Ölbehälter (1) angebrachten Niveaugebern über Geberlei­tungen verbunden sein. Im dargestellten Ausführungsbeispiel sind dabei ein Schauglas (22) für Ölstand im Oberleitraum (7), ein Schauglas (29) für Ölstand im Sammelraum (S) sowie ein Ni­veaugeber (23) dem Vorratsraum (8) zugeordnet. Der Niveaugeber (23) ist mit seinen Ölstandsgeberorganen (25) in bzw. an einem Steigrohr (24) angeordnet, das am Zwischenboden (9) befestigt ist und sich durch den Sammelraum (5) zur Oberseite des Ölbe­hälters (1) erstreckt. Dieses Steigrohr (24) ist mit einem Deckel (26) versehen, an dem ein Niveaugeber (23) angeordnet ist.In addition, the transfer space (7) is connected to the storage space (8), the transfer space (7) being separated from the storage space (8) by the oil-permeable partition (12). The leakage oil returned to the oil tank (1) or the oil that is diverted from the hydraulic working circuits first arrives in the feed space (6), as can be seen in the diagram according to FIG. 4, and then flows further through the oil-permeable partition (11) into the transfer space ( 7) and then through the oil-permeable partition (12) into the storage room (8). During this flow, the oil fed into the feed space (6) is calmed, cooled, filtered and any air components present are removed. Calming, filtering and air separation take place on and in connection with the oil-permeable partition walls (11, 12). In the area of the storage space (8), precautions are provided on the outer wall (2) of the oil container (1), for example a pipe socket (18) with a connecting flange, for establishing the connection with a pump (P) with which oil from the storage space (8 ) can be fed into the hydraulic working groups. An oil filler neck (19) leading to the outside of the oil tank (1) is also connected to the storage room (8), which in the illustrated embodiment is attached to the intermediate floor (9), in particular welded, protrudes upward from the oil tank (1) and there can be closed by a cover (20) with a ventilation device. Furthermore, at least a large part, but preferably the rooms (5, 6, 7, 8), are each assigned an oil drain screw (21) at a suitable point on the outside of the oil container (1). In addition, at least some of the rooms (5, 6, 7, 8) are assigned corresponding display instruments for displaying the respective oil level. These can be attached directly to the oil tank (1) and / or for remote monitoring with appropriate, on or in the oil tank (1) attached level sensors via sensor lines. In the exemplary embodiment shown, a sight glass (22) for the oil level in the upper control space (7), a sight glass (29) for the oil level in the collecting space (S) and a level sensor (23) are assigned to the storage space (8). The level sensor (23) is arranged with its oil level sensor elements (25) in or on a riser pipe (24) which is attached to the intermediate floor (9) and extends through the collecting space (5) to the top of the oil container (1). This riser pipe (24) is provided with a cover (26) on which a level sensor (23) is arranged.

Die beiden öldurchlässigen Trennwände (11, 12) sind vorzugs­weise austauschbar im Ölbehälter (1) angeordnet und können in diesem Fall beispielsweise als vom Boden (3) oder der Außen­wand (2) des Ölbehälters (1) her durch entsprechende Öffnungen einführbare bzw. wieder herausnehmbare und intern in ent­sprechenden Führungen aufgenommene Einschuborgane ausgebildet sein, was im dargestellten Ausführungsbeispiel der Fall und schematisiert angedeutet ist.The two oil-permeable partitions (11, 12) are preferably arranged interchangeably in the oil container (1) and in this case can be inserted or removed, for example, from the bottom (3) or the outer wall (2) of the oil container (1) through corresponding openings and insertion elements accommodated internally in corresponding guides can be formed, which is the case and indicated schematically in the exemplary embodiment shown.

Um etwaige notwendige Reinigungen seiner Räume (5, 6, 7, 8) zu ermöglichen, ist es zweckmäßig, wenn der Ölbehälter (1) mit einem abnehmbaren Deckel (4), gegebenenfalls auch mit abnehm­barem Boden (3) oder abnehmbaren Außenwandteilen ausgestattet ist.In order to enable any necessary cleaning of his rooms (5, 6, 7, 8), it is expedient if the oil container (1) is equipped with a removable cover (4), optionally also with a removable bottom (3) or removable outer wall parts.

Der Ölbehälter (1) ist an geeigneter Stelle der mit Öl zu ver­sorgenden bzw. entsorgenden Anlage angeordnet. Sofern die Umge­bungsbedingungen, denen der Ölbehälter (1) ausgesetzt ist, ins­besondere die Umgebungsluftbedingungen und Umgebungstemperatur­ bedingungen, nicht für eine ausreichende Kühlung des Ölbehäl­ters (1) genügen, dann ist diesem eine zusätzliche Kühleinrich­tung zuzuordnen, die an seiner Außenseite und/oder dessen Innenraum, z.B. wie in Figur 5 gezeigt, in Form durchgeführter Kühlschlangen (27) wirksam werden kann. Generell können zur Überwachung der Öltemperatur im Öbehälter (1) an geeigneten Stellen, z.B. im Bereich des Einspeiseraumes (6) und Vorrats­raumes (8), Temperaturfühler (28) vorhanden sein, die mit ex­ternen Anzeigeinstrumenten und gegebenenfalls mit Regelein­richtungen für die Steuerung der Kühlmittelzufuhr zum Ölbehäl­ter (1) verbunden sind.The oil tank (1) is arranged at a suitable point in the system to be supplied with oil. If the ambient conditions to which the oil container (1) is exposed, in particular the ambient air conditions and ambient temperature conditions, are not sufficient for sufficient cooling of the oil container (1), then an additional cooling device must be assigned to it, which can be effective on the outside and / or its interior, for example, as shown in FIG. 5, in the form of cooling coils (27). In general, for monitoring the oil temperature in the oil tank (1) at suitable points, for example in the area of the feed-in room (6) and storage room (8), temperature sensors (28) can be provided, which can be used with external display instruments and, if necessary, with regulating devices for controlling the coolant supply Oil container (1) are connected.

Mit dem erfindungsgemäßen Ölbehälter ist somit ein Organ ge­schaffen, in dem praktisch alle für die Wiederaufbereitung rückgeleiteten Öles notwendigen Maßnahmen mit vergleichswei­se einfachen Mitteln durchführbar sind. Der Ölbehälter ist unkompliziert aufgebaut und daher auch günstig herzustellen.With the oil container according to the invention, an organ is thus created in which practically all of the measures required for the reprocessing of the oil can be carried out with comparatively simple means. The oil tank is uncomplicated and therefore inexpensive to manufacture.

Claims (11)

1. Ölbehälter zur Ölversorgung von hydraulischen Arbeitskreisen mit Speicherfunktion, insbesondere von hydrostatischen An­triebs-, Brems-, Bremsenergierückgewinnungs- und Arbeitsein­richtungen in Fahrzeugen, Hub-, Förder- oder dergleichen An­lagen und zur Wiederaufnahme rückgeleiteten Öles,
dadurch gekennzeichnet,
daß der Ölbehälter (1) als Multifunktionsorgan ausgebildet und hierzu durch interne Trennwände (9, 10, 11, 12) in mehrere Funktionsräume unterteilt ist, nämlich einem Sammelraum (5) zum bedarfsweisen Aufnehmen zumindest eines Großteils der systeminternen Ölmenge, einem Einspeiseraum (6) für Leckage­bzw. abgesteuertes Öl, einem sich ausgangs des letzteren an­schließenden, von diesem durch eine öldurchlässige Trennwand (11) getrennten Überleitraum (7) und einem sich ausgangs des letzte­ren anschließenden, von diesem ebenfalls durch eine öldurchläs­sige Trennwand (12) getrennten Vorratsraum (8), so daß in den Ölbehälter (1) rückgeleitetes Öl beim Durchströmen vom Einspei­seraum (6) über den Überleitraum (7) zum Vorratsraum (8) ge­kühlt, beruhigt, gefiltert und von Luftanteilen befreit wird.1. Oil container for supplying oil to hydraulic working groups with a storage function, in particular of hydrostatic drive, braking, braking energy recovery and working devices in vehicles, lifting, conveying or similar systems and for the recovery of returned oil,
characterized,
that the oil container (1) is designed as a multifunctional organ and is divided into several functional spaces by internal partitions (9, 10, 11, 12), namely a collecting space (5) for receiving at least a large part of the system's internal oil volume, a feed space (6) for leakage controlled oil, an outlet of the latter, which is separated from it by an oil-permeable partition (11), and an outlet of the latter, which is also separated by an oil-permeable partition (12), so that Oil flowing back into the oil tank (1) is cooled, calmed, filtered and freed from air components as it flows through from the feed-in area (6) via the transfer area (7) to the storage area (8). 2. Ölbehälter nach Anspruch 1, dadurch gekennzeichnet, daß die­ser zur Bildung der Räume (5, 6, 7, 8) durch einen Zwischen­boden (9) quer unterteilt ist, der zusammen mit dem oberen Ölbehälterteil den Sammelraum (5) begrenzt, während der untere Ölbehälterteil durch eine undurchlässige Trennwand (10) sowie die beiden sich endseitig beiderseits der letzteren an­schließenden, öldurchlässigen Trennwände (11, 12), die sich jeweils von der Innenseite der Außenwand (2) des Ölbehäl­ ters (1) ausgehend zwischen dessen Boden (3) und Zwischen­boden (9) erstrecken, in die drei Räume - Einspeiseraum (6), Überleitraum (7) und Vorratsraum (8) - unterteilt ist.2. Oil container according to claim 1, characterized in that it is divided transversely to form the spaces (5, 6, 7, 8) by an intermediate floor (9) which, together with the upper oil container part, limits the collecting space (5) during the lower oil container part by an impermeable partition (10) and the two oil-permeable partition walls (11, 12) adjoining on both sides of the latter, each of which is located on the inside of the outer wall (2) of the oil container ters (1) starting between the floor (3) and intermediate floor (9), into the three rooms - feed room (6), transfer room (7) and storage room (8) - is divided. 3. Ölbehälter nach den Ansprüchen 1 und 2, dadurch gekennzeich­net, daß zumindest einem Teil der Räume (5, 6, 7, 8) zur An­zeige des Ölfüllstandes entsprechende Anzeigeinstrumente zu­geordnet sind, die direkt am Ölbehälter (1) angebracht und/­oder für Fernbedienung mit entsprechenden am bzw. im Ölbe­hälter angebrachten Niveaugebern über Geberleitungen ver­bunden sind.3. Oil container according to claims 1 and 2, characterized in that at least some of the rooms (5, 6, 7, 8) are assigned to display the oil level corresponding display instruments, which are attached directly to the oil container (1) and / or for remote control are connected to corresponding level sensors mounted on or in the oil tank via sensor lines. 4. Ölbehälter nach den Ansprüchen 1 und 2, dadurch gekennzeich­net, daß an dessen Außenwand (2) a) im Bereich des Einspeiseraumes (6) eine Öffnung und unter Abdeckung derselben davor Vorkehrungen, beispiels­weise einAnschlußblock (13), für den Anschluß von Lecka­geöl- und Absteuerölrückleitungen (14, 15), und b) im Bereich des Vorratsraumes (8) Vorkehrungen, bei­spielsweise ein Rohrstutzen (18) mit Anschlußflansch , zur Herstellung der Verbindung mit einer Öl dem System zuführenden Pumpe (P) 4. Oil container according to claims 1 and 2, characterized in that on the outer wall (2) a) in the area of the feed space (6) an opening and, under the same covering, precautions, for example a connecting block (13), for connecting leakage oil and control oil return lines (14, 15), and b) precautions in the area of the storage space (8), for example a pipe socket (18) with a connecting flange, for establishing the connection with an oil-supplying pump (P) vorgesehen sind, daß am Vorratsraum (8) ferner ein bis zur Außenseite des Ölbehälters (1) führender Öleinfüllstutzen (19) angeschlossen und außerdem zumindest einem Großteil der Räume (5, 6, 7, 8) jeweils eine an geeigneter Stelle der Außenseite des Ölbehälters (1) angeordnete Ölablaß­schraube (21) zugeordnet ist.It is provided that an oil filler neck (19) leading to the outside of the oil tank (1) is also connected to the storage room (8) and also at least a large part of the rooms (5, 6, 7, 8) each at a suitable point on the outside of the oil tank (1) arranged oil drain plug (21) is assigned. 5. Ölbehälter nach Anspruch 1, dadurch gekennzeichnet, daß zu­mindest am Vorratsraum (8) ein einen Niveaugeber (23) mit Ölstandsfühler (25) aufnehmendes Steigrohr (24) angeschlos­sen ist.5. Oil container according to claim 1, characterized in that at least on the storage space (8) with a level sensor (23) Oil level sensor (25) receiving riser pipe (24) is connected. 6. Ölbehälter nach den Ansprüchen 1 und 2, dadurch gekenn­zeichnet, daß die beiden öldurchlässigen Trennwände (11, 12) austauschbar im Ölbehälter (1) angeordnet und als vom Boden (3) oder der Außenwand (2) des Ölbehälters (1) her durch entsprechende Öffnungen einführbare bzw. wieder he­rausnehmbare und intern in entsprechenden Führungen aufge­nommene Einschuborgane ausgebildet sind.6. Oil container according to claims 1 and 2, characterized in that the two oil-permeable partitions (11, 12) are arranged interchangeably in the oil container (1) and as from the bottom (3) or the outer wall (2) of the oil container (1) by Corresponding openings are designed to be insertable or removable and internally inserted in corresponding guides. 7. Ölbehälter nach den Ansprüchen 1 und 2, dadurch gekenn­zeichnet, daß das in diesen rückgeleitete Öl durch externe Zuführung von Kühlmittel an den Ölbehälter (1) und/oder interne Durchleitung von Kühlmittel mit entsprechender Regelung auf ein erforderliches Niveau abkühlbar ist.7. Oil container according to claims 1 and 2, characterized in that the oil returned in this by external supply of coolant to the oil container (1) and / or internal passage of coolant with appropriate control can be cooled to a required level. 8. Ölbehälter nach den Ansprüchen 1 und 2, dadurch gekenn­zeichnet, daß dieser, um eine etwaige Reinigung zu ermög­lichen, mit einem abnehmbaren Deckel (4) gegebenenfalls auf einem abnehmbaren Boden 3 und/oder abnehmbaren Außen­wandteilen ausgestattet ist.8. Oil container according to claims 1 and 2, characterized in that it is equipped with a removable cover (4) optionally on a removable bottom 3 and / or removable outer wall parts, in order to enable any cleaning. 9. Ölbehälter nach den Ansprüchen 1 und 2, dadurch gekenn­zeichnet, daß der Sammelraum (5) durch eine, beispiels­weise mittels eines Hahnes (16), absperrbare Leitung (17) mit dem Überleitraum (7) verbunden ist.9. Oil container according to claims 1 and 2, characterized in that the collecting space (5) is connected to the transfer space (7) by a line (17) which can be shut off, for example by means of a tap (16). 10. Ölbehälter nach den Ansprüchen 1 und 2 oder 7, dadurch ge­kennzeichnet, daß im Ölbehälter (1) zur Überwachung der Öltemperatur des rückgeleiteten und wiederaufbereiteten Öles Temperaturfühler (28) an geeigneten Stellen ange­bracht sind, die mit externen Anzeigeinstrumenten und gegebenenfalls mit Regeleinrichtungen für die Steuerung der Kühlmittelzufuhr zum Ölbehälter (1) verbunden sind.10. Oil container according to claims 1 and 2 or 7, characterized in that in the oil container (1) for monitoring the oil temperature of the returned and reconditioned Oil temperature sensors (28) are attached at suitable points, which are connected to external display instruments and, if necessary, to regulating devices for controlling the coolant supply to the oil tank (1).
EP87116360A 1986-12-18 1987-11-06 Oil container for supplying hydraulic working circuits serving for accumulation and resumption of returned oil Expired - Lifetime EP0271702B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87116360T ATE81388T1 (en) 1986-12-18 1987-11-06 OIL TANK FOR OIL SUPPLY OF HYDRAULIC WORKING CIRCUITS WITH ACCUMULATION FUNCTION AND FOR RECOVERY OF RETURNED OILS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3643265 1986-12-18
DE19863643265 DE3643265A1 (en) 1986-12-18 1986-12-18 OIL CONTAINER FOR THE OIL SUPPLY OF HYDRAULIC WORKING CIRCUITS WITH STORAGE FUNCTION AND FOR RECOVERY OF OIL RECEIVED

Publications (3)

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EP0271702A2 true EP0271702A2 (en) 1988-06-22
EP0271702A3 EP0271702A3 (en) 1990-04-25
EP0271702B1 EP0271702B1 (en) 1992-10-07

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US (1) US4809745A (en)
EP (1) EP0271702B1 (en)
AT (1) ATE81388T1 (en)
DE (2) DE3643265A1 (en)
DK (1) DK161778C (en)

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ATE81388T1 (en) 1992-10-15
DE3643265A1 (en) 1988-07-07
DK161778C (en) 1992-01-20
EP0271702B1 (en) 1992-10-07
DE3782148D1 (en) 1992-11-12
US4809745A (en) 1989-03-07
DK596287D0 (en) 1987-11-13
EP0271702A3 (en) 1990-04-25
DK161778B (en) 1991-08-12
DK596287A (en) 1988-06-19
DE3643265C2 (en) 1990-01-04

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