EP0271702B1 - 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
EP0271702B1
EP0271702B1 EP87116360A EP87116360A EP0271702B1 EP 0271702 B1 EP0271702 B1 EP 0271702B1 EP 87116360 A EP87116360 A EP 87116360A EP 87116360 A EP87116360 A EP 87116360A EP 0271702 B1 EP0271702 B1 EP 0271702B1
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EP
European Patent Office
Prior art keywords
oil
oil container
compartment
container
space
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
EP87116360A
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German (de)
French (fr)
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EP0271702A2 (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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Filing date
Publication date
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Priority to AT87116360T priority Critical patent/ATE81388T1/en
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Publication of EP0271702A3 publication Critical patent/EP0271702A3/en
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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
    • 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 container designed as a multifunctional organ with features according to the preamble of claim 1.
  • Such an oil container is known from US-A-4, 210 176.
  • Such a subdivision of the oil container is made by partition walls that the feed space and storage space in the lower container area and the transfer room in the upper container area, covering both of the aforementioned spaces, is arranged.
  • the two lower rooms are vented by means of a vent pipe attached centrally to the top of the partition.
  • this method requires a feed space and a storage space with a trapezoidal cross-section delimited at the top by the appropriately roof-shaped partition wall to the transfer space in order to allow the separated air bubbles to rise and lead to the ventilation pipe at the highest point enable.
  • the feed-in area and the storage area are sealed off from one another by a vertical, oil-impermeable partition wall extending from the container floor to the roof-shaped partition wall.
  • a vertical, oil-impermeable partition wall extending from the container floor to the roof-shaped partition wall.
  • an oil container is known from the DE magazine "fluid, October 1974, pages 52 to 55", which should and can perform certain functions. As a result, however, this only leads to a two-chamber container with a feed space for returned oil and a storage space for cleaned oil.
  • the two rooms arranged side by side in a straight flow direction are only divided by a single oil-permeable partition. This partition ensures calming, filtering and air release of the returned oil. Cooling hardly seems possible.
  • the calming, filtering and air evacuation of the oil within the known container of the Effectiveness of the single partition depends, which depending on the genus is usually suitable for one or the other purpose.
  • Hydraulic oil can be pumped out of such an oil container in an application, for example by means of a pump, and hydraulic working groups can be supplied to a system.
  • 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 also been provided as an alternative for this purpose. However, this considerably increases the cost and the space requirement of the system as such.
  • oil that is returned can be effectively cooled, filtered, calmed and freed from air components, so that an excellently prepared oil that can be fed back into the hydraulic working groups is then available again in the oil tank storage room.
  • the oil from the working groups and in particular from the store or stores can be drained into the collecting space, for example during repairs, and after the repair has ended can also be returned to the system.
  • the cumbersome provision of independent drain containers can be omitted.
  • the oil tank designated 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 container 1, namely a collecting room 5, a feed-in room 6, a transfer room 7 and a storage room 8. These functional spaces are delimited from one another by internal division of the oil container 1 by partitions.
  • the gathering room 5, which serves for receiving at least a large part of the system-internal oil quantity, for example in the case of repairs, is realized by the provision of an intermediate floor 9 forming an oil-impermeable partition wall, which divides the oil container 1 transversely and, in the exemplary embodiment shown, together with the upper container part, the collection space 5 limited.
  • the lower part of the container is divided by an oil-impermeable partition 10 and two oil-permeable partitions 11, 12 adjoining it at the ends and on both sides to form the feed space 6, the transfer space 7 and the storage space 8.
  • the partitions 10, 11, 12 each extend from the inside of the outer wall 2 of the oil container 1 between the oil container base 3 and the intermediate base 9.
  • the feed space 6 serves to receive leakage oil or oil which has been discharged from the hydraulic working groups, with an opening on the outer wall 2 of the oil container 1 in the region of the feed space 6 and, taking the same outside, precautions, for example in the form of a connection block 13, for the Connection of leakage oil and control oil return lines 14, 15 are provided.
  • 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, and possibly also by means of a remotely controllable valve.
  • 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, also be returned directly to the system.
  • 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 wall 12.
  • the oil fed into the feed space 6 is calmed, cooled, filtered and freed from any air components present.
  • the calming, filtering and air separation takes place on and in connection with the oil-permeable partition walls 11, 12.
  • a pipe socket 18 with a connecting flange for establishing the connection to a pump P with which oil from the storage room 8 can be fed into the hydraulic working groups.
  • an oil filler neck 19 leading to the outside of the oil container 1 is connected to the reservoir 8, which in the illustrated embodiment is attached to the intermediate floor 9, in particular welded on, protrudes upward from the oil container 1 and can be closed there by a cover 20 with a ventilation device.
  • at least a large part, but preferably all of the spaces 5, 6, 7, 8 are each assigned an oil drain screw 21 at a suitable point on the outside of the oil container 1.
  • the rooms 5, 6, 7, 8 are assigned corresponding display instruments for displaying the respective oil level.
  • These can be attached directly to oil tank 1 and / or for remote monitoring with appropriate, on or level sensors installed in the oil reservoir 1 can be connected via sensor lines.
  • a sight glass 22 for the oil level is assigned to the transfer space 7, a sight glass 29 for the oil level to the collecting space 5 and a level sensor 23 for the storage space 8.
  • the level sensor 23 is arranged with its oil level transmitter elements 25 in or on a riser pipe 24 which is fastened 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, for example, from the bottom 3 or the outer wall 2 of the oil container 1 through corresponding openings or as the removable and inside the oil container in corresponding guides Insert elements can be formed, which is the case and indicated schematically in the illustrated embodiment.
  • 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 container 1 is arranged at a suitable point in the system to be supplied or disposed with oil. If the ambient conditions to which the oil container 1 is exposed, in particular the ambient air conditions and ambient temperature conditions, is 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 in 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 in its interior, for example as shown in FIG. 5, in the form of cooling coils 27.
  • temperature sensors 28 can be present, which are connected to external display instruments and, if appropriate, to regulating devices for controlling the coolant supply to the oil container 1.

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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

An oil container for the supply of hydraulic power circuits with a storage function and for receiving oil returned from the circuits. The oil container has storage means and comprises walls and internal partitions constituting a multifunctional system, the partitions defining a collection space adapted when required to accept at least a major part of the oil in the power circuit, an intake space for oil returned from the system, a transition space connected with an outlet of the intake space and separated from the intake space by an oil-permeable partition, a storage space connected with an outlet of the transition space and separated from the transition space by an oil-permeable partition so that the oil is returned into the oil container. The oil returning to the container owing to leakage or by the operation of valves is cooled, calmed, filtered and freed of bubbles on passing through the intake space and the transition space into the storage space. The oil container may if required have means for automatic control of at least the amount of oil in one of the spaces.

Description

Die Erfindung betrifft einen als Multifunktionsorgan ausgebildeten Ölbehälter mit Merkmalen entsprechend dem Oberbegriff des Anspruchs 1.The invention relates to an oil container designed as a multifunctional organ with features according to the preamble of claim 1.

Ein solcher Ölbehälter ist aus der US-A-4, 210 176 bekannt. Dabei ist eine solche Unterteilung des Ölbehälters durch Trennwände vorgenommen, daß der Einspeiseraum und Vorratsraum im unteren Behälterbereich und der Überleitraum im oberen Behälterbereich, beide vorgenannte Räume überdeckend, angeordnet ist. Außerdem findet eine Entlüftung der beiden unteren Räume durch ein oben an der Trennwand mittig angesetztes Entlüftungsrohr statt. Diese Methode bedingt aber-wie in der Zeichnung dargestellt-einen Einspeiseraum und einen Vorratsraum miteinem trapez-förmigen Querschnitt oben begrenzt durch die entsprechend dachförmig ausgebildete Trennwand zum Überleitraum, um ein Aufsteigen und Hinführen der abgeschiedenen Luftblasen zu dem an der höchsten Stelle gegebenen Entlüftungsrohr überhaupt zu ermöglichen. Einspeiseraum und Vorratsraum sind voneinander durch eine vertikale, von Behälterboden bis zur dachförmigen Trennwand reichende ölundurchlässige Trennwand gegeneinander abgeschottet. Hinsichtlich der dachförmigen, den Überleitraum vom Einspeiseraum und Vorratsraum trennenden Wand kann aber nicht im Sinne des Wortes von einer ,,öldurchlässigen Trennwand" gesprochen werden, weil diese zu etwa 90% aus einem ölundurchlässigen Materialbereich besteht und das Öl jeweils nur durch kleine randseitige Öffnungen am jeweils tiefsten Punkt vom Einspeiseraum in den Überleitraum und von diesem in den Vorratsraum übertreten kann. Außerdem ist mit solchermaßen gestalteten Trennwänden keine Filterung des Öles möglich.Such an oil container is known from US-A-4, 210 176. Such a subdivision of the oil container is made by partition walls that the feed space and storage space in the lower container area and the transfer room in the upper container area, covering both of the aforementioned spaces, is arranged. In addition, the two lower rooms are vented by means of a vent pipe attached centrally to the top of the partition. However, as shown in the drawing, this method requires a feed space and a storage space with a trapezoidal cross-section delimited at the top by the appropriately roof-shaped partition wall to the transfer space in order to allow the separated air bubbles to rise and lead to the ventilation pipe at the highest point enable. The feed-in area and the storage area are sealed off from one another by a vertical, oil-impermeable partition wall extending from the container floor to the roof-shaped partition wall. With regard to the roof-shaped wall that separates the transfer area from the feed-in area and the storage area, one cannot speak of an "oil-permeable partition wall" in the sense of the word, because this consists of approximately 90% of an oil-impermeable material area and the oil is only accessible through small openings at the edges the lowest point in each case from the feed space into the transfer space and from this into the storage space. In addition, the oil cannot be filtered with partition walls designed in this way.

Darüber hinaus ist aus der DE-Zeitschrift "fluid, Oktober 1974, Seiten 52 bis 55" ein Ölbehälter bekannt, der bestimmte Funktionen erfüllen soll und kann. Dieses führt im Ergebnis aber nur zu einem Zwei-Kammer-Behälter mit einem Einspeiseraum für rückgeleitetes Öl und einen Vorratsraum für gereinigtes Öl. Die beiden nebeneinander in gerader Durchströmungsrichtung angeordneten Räume sind lediglich durch eine einzige öldurchlässige Trennwand unterteilt. Diese Trennwand sorgt für eine Beruhigung, Filterung und Luftbefreiung des rückgeleiteten Öles. Eine Kühlung erscheint kaum möglich. Außerdem ist die Beruhigung, Filterung und Luftbefreiung des Öles innerhalb des bekannten Behälters von der Wirksamkeit der einzigen Trennwand abhängig, wobei diese je nach Gattung in der Regel entweder für den einen oder den anderen Zweck bedingt tauglich ist.In addition, an oil container is known from the DE magazine "fluid, October 1974, pages 52 to 55", which should and can perform certain functions. As a result, however, this only leads to a two-chamber container with a feed space for returned oil and a storage space for cleaned oil. The two rooms arranged side by side in a straight flow direction are only divided by a single oil-permeable partition. This partition ensures calming, filtering and air release of the returned oil. Cooling hardly seems possible. In addition, the calming, filtering and air evacuation of the oil within the known container of the Effectiveness of the single partition depends, which depending on the genus is usually suitable for one or the other purpose.

Aus einem solchen Ölbehälter kann in einem Anwendungsfall beispielsweise mittels einer Pumpe Hydrauliköl abgepumpt und hydraulischen Arbeitskreisen einer Anlage zugeführt werden.Hydraulic oil can be pumped out of such an oil container in an application, for example by means of a pump, and hydraulic working groups can be supplied to a system.

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 alternativ auch externe Kühlvorrichtungen, Filter und Luftabscheider vorgesehen worden. Dies erhöht jedoch in beträchtlichem Umfang den Kostenaufwand sowie den Platzbedarf der Anlage als solches.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 also been provided as an alternative for this purpose. However, this considerably increases the cost and the space requirement of the system as such.

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.In addition, it can e.g. for repair purposes, it may be necessary to drain the oil absorbed by this from a reservoir 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, einen Ölbehälter der eingangs genannten Art so auszubilden, daß mit vergleichsweise einfachen Mitteln alle für die Wiederaufbereitung von aus hydraulischen Arbeitskreisen rückgeleitetem Öl notwendigen Maßnahmen durchgeführt werden können.It is therefore an object of the invention to design an oil container of the type mentioned at the outset in such a way that all of the measures necessary for the reprocessing of oil returned from hydraulic working groups can be carried out with comparatively simple means.

Diese Aufgabe ist erfindungsgemäß durch einen gattungsgemäßen Ölbehälter mit den im Kennzeichen des Anspruchs 1 angegebenen Merkmalen gelöst.This object is achieved by a generic oil container with the features specified in the characterizing part of claim 1.

Mit dem so ausgestalteten Ölbehälter kann auf einfache Weise rückgeleitetes Öl wirksam gekühlt, gefiltert, beruhigt und von Luftanteilen befreit werden, 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 ausden Arbeitskreisen und insbesondere dem bzw. den Speichern abgelassen und nach Beendigung der Reparatur auch wieder in das System rückgeleitetwerden. Hierdurch kann die umständliche Bereithaltung von eigenständigen Ablaßbehältern entfallen.With the oil tank designed in this way, oil that is returned can be effectively cooled, filtered, calmed and freed from air components, so that an excellently prepared oil that can be fed back into the hydraulic working groups is then available again in the oil tank storage room. The oil from the working groups and in particular from the store or stores can be drained into the collecting space, for example during repairs, and after the repair has ended can also be returned to the system. As a result, the cumbersome provision of independent drain containers can be omitted.

Vorteilhatte 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 Ölbehalter 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:
Figure 1
largely schematized an embodiment of the oil container in perspective view,
Figure 2
2 shows a longitudinal section through the oil container according to FIG. 1,
Figure 3
2 shows a top view of the oil container according to FIG. 1,
Figure 4
the functional path of the oil returned to the oil container according to FIG. 1,
Figure 5
a variant of the oil tank 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 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 Sammelraum 5 , welcher zum bedarfsweisen Aufnehmen zumindest eines Großteils der systeminternen Ölmenge beispielsweise im Falle der Reparatur dient, ist durch das Vorsehen eines eine ölundurchlässige 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 ölundurchlässige Trennwand 10 sowie zwei sich endseitig, beiderseits derselben anschließende öldurchlässige Trennwände 11, 12 zur Bildung des Einspeiseraumes 6, des Überleitraumes 7 und des 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 Leckageöl bzw. von aus den hydraulischen Arbeitskreisen abgesteuertem Öl, wobei an der Außenwand 2 des Ölbehälters 1 im 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 Absteuerölrückleitungen 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 , gegebenenfals auch mittels eines fernsteuerbaren Ventils, absperrbare Leitung 17 mit dem Sammelraum 5 verbunden. Auf diese Weise ist eine Einleitung von Öl aus dem System und eine 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 container 1, namely a collecting room 5, a feed-in room 6, a transfer room 7 and a storage room 8. These functional spaces are delimited from one another by internal division of the oil container 1 by partitions. The gathering room 5, which serves for receiving at least a large part of the system-internal oil quantity, for example in the case of repairs, is realized by the provision of an intermediate floor 9 forming an oil-impermeable partition wall, which divides the oil container 1 transversely and, in the exemplary embodiment shown, together with the upper container part, the collection space 5 limited. In the exemplary embodiment shown, the lower part of the container is divided by an oil-impermeable partition 10 and two oil-permeable partitions 11, 12 adjoining it at the ends and on both sides to form the feed space 6, the transfer space 7 and the storage space 8. The partitions 10, 11, 12 each extend from the inside of the outer wall 2 of the oil container 1 between the oil container base 3 and the intermediate base 9. The feed space 6 serves to receive leakage oil or oil which has been discharged from the hydraulic working groups, with an opening on the outer wall 2 of the oil container 1 in the region of the feed space 6 and, taking the same outside, precautions, for example in the form of a connection block 13, for the Connection of leakage oil and control oil return lines 14, 15 are provided. The outlet of the feed space 6, separated from it by the oil-permeable wall (11), connects 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, and possibly also by means of a remotely 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, also be 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. das 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 Ölbehalters 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 allen 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 an 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 den Ölstand dem Überleitraum 7 , ein Schauglas 29 für den Ölstand dem Sammelraum 5 sowie ein Niveaugeber 23 für den 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 wall 12. The leakage oil returned to the oil container 1 or the oil that is discharged from the hydraulic working circuits, as shown in the diagram according to FIG the oil-permeable partition 12 into the storage space 8. During this flow, the oil fed into the feed space 6 is calmed, cooled, filtered and freed from any air components present. The calming, filtering and air separation takes place on and in connection with the oil-permeable partition walls 11, 12. In the area of the storage room 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 to a pump P with which oil from the storage room 8 can be fed into the hydraulic working groups. Furthermore, an oil filler neck 19 leading to the outside of the oil container 1 is connected to the reservoir 8, which in the illustrated embodiment is attached to the intermediate floor 9, in particular welded on, protrudes upward from the oil container 1 and can be closed there by a cover 20 with a ventilation device. Furthermore, at least a large part, but preferably all of the spaces 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 oil tank 1 and / or for remote monitoring with appropriate, on or level sensors installed in the oil reservoir 1 can be connected via sensor lines. In the exemplary embodiment shown, a sight glass 22 for the oil level is assigned to the transfer space 7, a sight glass 29 for the oil level to the collecting space 5 and a level sensor 23 for the storage space 8. The level sensor 23 is arranged with its oil level transmitter elements 25 in or on a riser pipe 24 which is fastened 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. wie der herausnehmbare und im Inneren des Ölbehälters in entsprechenden Führungen aufnehmbare 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, for example, from the bottom 3 or the outer wall 2 of the oil container 1 through corresponding openings or as the removable and inside the oil container in corresponding guides Insert elements can be formed, which is the case and indicated schematically in the illustrated embodiment.

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 its 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 Umgebungstemperaturbedingungen, nicht für eine ausreichende Kühlung des Ölbehälters 1 genügen, dann ist diesem eine zusätzliche Kühleinrichtung zuzuordnen, die an seiner Außenseite und/oder in seinem Innenraum, z.B. wie in Figur 5 gezeigt, in Form durchgeführter Kühlschlangen 27 wirksam werden kann. Generell können zur Überwachung der Öltemperatur im Ölbehälter 1 an geeigneten Stellen, z.B. im Bereich des Einspeiseraumes 6 und des 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 container 1 is arranged at a suitable point in the system to be supplied or disposed with oil. If the ambient conditions to which the oil container 1 is exposed, in particular the ambient air conditions and ambient temperature conditions, is 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 in 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 container 1 at suitable points, for example in the area of the feed space 6 and the storage space 8, temperature sensors 28 can be present, which are connected to external display instruments and, if appropriate, to regulating devices for controlling the coolant supply to the oil container 1.

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 (9)

  1. Oil container (1), constructed as a multi-functional element, for hydraulic systems with working circuits having a pressure accumulator (HDS, NDS), which oil container (1) is divided by internal separating walls (9, 10, 11, 12) into a plurality of functional compartments, namely: an infeed compartment (6) for returned oil; a transfer compartment (7) connected to the outlet of the latter and separated therefrom by an oil-permeable separating wall (11); and a reservoir compartment (8), connected to the outlet of the latter and also separated therefrom by an oil-permeable separating wall, for the supply of oil to connected hydraulic working circuits, so that oil returned to the oil container (1), on flowing through the infeed compartment (6) and the transfer compartment (7) to the reservoir compartment (8), is cooled, calmed and freed of air portions, characterized in that the oil container (1) also has a fourth functional compartment, namely a collecting compartment (5) for receiving where necessary at least a substantial part of the quantity of oil in the hydraulic working circuit provided with pressure accumulators (HDS, NDS), in that the oil container (1) is divided transversely to form the functional compartments (5, 6, 7, 8) by an intermediate floor (9) forming an oil-impermeable separating wall and, together with the upper oil container part, defining the collecting compartment (5), while the lower oil container part is divided partly in the longitudinal direction by an oil-impermeable separating wall (10) and connected thereto on the end side by the two oil-permeable separating walls (11, 12), mounted in the transverse direction, to form the infeed compartment (6), the transfer compartment (7) and the reservoir compartment (8), the oil-permeable separating walls (11, 12) extending between the insides of the outer walls (2) of the oil container, the floor (3) and the intermediate floor (9), and also being constructed for filtering the oil flowing through.
  2. Oil container according to Claim 1, characterized in that there are associated with at least some of the functional compartments (5, 6, 7, 8) for display of the oil level appropriate display instruments (22, 29) which are mounted directly on the oil container (1) and/or are connected, for remote monitoring by means of appropriate level detectors (23) mounted on or in the oil container (1), by way of detector lines.
  3. Oil container according to Claim 1, characterized in that there are provided on one outer wall (2) thereof, in the region of the infeed compartment (6), measures such as a terminal block (13) for connecting leakage oil and discharge oil return lines (14, 15), in that furthermore in the region of the reservoir compartment (8) there are provided measures such as a pipe connection (18) with connection flange for providing the connection to a pump (P) supplying oil to the system, in that there is connected to the reservoir compartment (8) furthermore an oil charging connection (19) leading to the outside (4) of the oil container (1), and in that moreover there is associated with at least a substantial part of the functional compartments (5, 6, 7, 8) in each case an oil drainage screw (21) arranged at a suitable position on the outer side (2) of the oil container (1).
  4. Oil container according to Claim 2, characterized in that an upright pipe (24) receiving the level detector (23) with the oil level sensor (25) is connected at least to the reservoir compartment (8).
  5. Oil container according to one of the preceding claims, characterized in that the two oil-permeable separating walls (11, 12) are arranged replaceably in the oil container (1) and are constructed as insertion elements which may be introduced or removed again through appropriate openings from the floor (3) or from the outer wall (2) of the oil container (1) and can be received in the interior of the oil container (1) in appropriate guides.
  6. Oil container according to one of the preceding claims, characterized in that the returned oil can be cooled to a required temperature by an external supply of coolant to the oil container (1) and/or by an internal passage (27) of coolant using an appropriate regulating apparatus.
  7. Oil container according to one of the preceding claims, characterized in that the oil container (1) is equipped with a removable cover (4) and/or with a removable floor (3) and/or with a removable outer wall (2) for any cleaning.
  8. Oil container according to one of the preceding claims, characterized in that the collecting compartment (5) is connected to the transfer compartment (7) by a line (17) which can be shut off - for example by means of a tap (16).
  9. Oil container according to one of the preceding claims, characterized in that there are mounted in the oil container (1) for monitoring the oil temperature of the returned and reprocessed oil temperature sensors (28) at suitable positions, which are connected to external display instruments and may be connected to regulating apparatus for controlling the coolant supply (27) to the oil container (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)

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

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EP87116360A Expired - Lifetime EP0271702B1 (en) 1986-12-18 1987-11-06 Oil container for supplying hydraulic working circuits serving for accumulation and resumption of returned oil

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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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Also Published As

Publication number Publication date
DE3643265C2 (en) 1990-01-04
EP0271702A2 (en) 1988-06-22
DK596287A (en) 1988-06-19
DK161778B (en) 1991-08-12
DK161778C (en) 1992-01-20
DE3782148D1 (en) 1992-11-12
DE3643265A1 (en) 1988-07-07
DK596287D0 (en) 1987-11-13
US4809745A (en) 1989-03-07
EP0271702A3 (en) 1990-04-25
ATE81388T1 (en) 1992-10-15

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