EP2202412A1 - Hydraulic accumulator - Google Patents

Hydraulic accumulator Download PDF

Info

Publication number
EP2202412A1
EP2202412A1 EP09015615A EP09015615A EP2202412A1 EP 2202412 A1 EP2202412 A1 EP 2202412A1 EP 09015615 A EP09015615 A EP 09015615A EP 09015615 A EP09015615 A EP 09015615A EP 2202412 A1 EP2202412 A1 EP 2202412A1
Authority
EP
European Patent Office
Prior art keywords
shells
housing
hydraulic accumulator
accumulator according
overlap
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
EP09015615A
Other languages
German (de)
French (fr)
Other versions
EP2202412B1 (en
Inventor
Herbert Baltes
Norbert Weber
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.)
Hydac Technology GmbH
Original Assignee
Hydac Technology GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hydac Technology GmbH filed Critical Hydac Technology GmbH
Publication of EP2202412A1 publication Critical patent/EP2202412A1/en
Application granted granted Critical
Publication of EP2202412B1 publication Critical patent/EP2202412B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/106—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means characterised by the way housing components are assembled
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3151—Accumulator separating means having flexible separating means the flexible separating means being diaphragms or membranes
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/405—Housings
    • F15B2201/4053—Housings characterised by the material
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/405—Housings
    • F15B2201/4056—Housings characterised by the attachment of housing components
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/415—Gas ports
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/60—Assembling or methods for making accumulators
    • F15B2201/605—Assembling or methods for making housings therefor

Definitions

  • the invention relates to a hydraulic accumulator having at least two housing shells and at least one separating element which preferably separates medium-tight inside the housing formed by the housing shells, wherein the housing shells with their free end faces in juxtaposition to form the housing.
  • the DE 10 2006 004 120 A1 also discloses a hydraulic accumulator in the form of a diaphragm accumulator, in which, in addition to metallic housing parts which each form a connection region on the gas side and on the fluid side of the accumulator, a reinforcing winding of a fiber material is provided as a further housing component.
  • hydraulic accumulators have to meet different requirements. Particularly high demands are to be met if such accumulators are used in hydraulic systems of sophisticated motor vehicles. This is especially the case when a Use in competition vehicles, such as Formula racing cars, is provided. In these cases, the respective hydraulic accumulators must not only cope with high loads, both in terms of mechanical loads, static and dynamic nature, including extremely high pressure loads, but it is also imperative that the reliability, despite the high load, with the lowest construction weight of the memory is reached.
  • the invention has the object to provide a hydraulic accumulator of the type considered available, which, although he is able to cope with the mentioned, high loads, characterized by a minimum construction weight.
  • a significant feature of the invention is that the housing shells forming the storage housing are pressure-tightly connected to one another at their mutually facing end sides by means of an externally applied wrapping made of a fiber composite material or by means of a fiber-laid application.
  • metallic housing shells in the form of rotational bodies are preferably provided with respect to the longitudinal axis of the housing whose mutually facing opening edges overlap one another such that the wrapping, which is effective at the overlap, is formed by the fiber composite material generated supporting force and this counteracting, generated due to internal pressure in the storage housing pressure force form a clamping force on the overlap as a holding force for the mutual anchoring of the opening edges of the shells.
  • This type of mutual anchoring ensures the simplest design and lowest construction weight pressure resistance of the housing at very high operating pressures, for example, at pressure peaks up to 250 bar or more, even at low wall thickness of the shells, which due to serving as an abutment outer support by wrapping the internal pressure reinforced in the storage housing, the clamping forces against the counter-bearing formed by the winding.
  • the movable separating element may be formed by a membrane whose peripheral edge engages the overlap with an anchoring part between the opening edges of the shells so that the clamping force acting on the overlap clamping force for anchoring the anchoring part of the membrane at the opening edges of the Shells forms.
  • the clamping force acting on the overlap is simultaneously available as a holding force for the anchoring of the membrane, resulting in a particularly significant simplification of the design.
  • the arrangement is made such that the opening edges of the shells overlap in the region of half the housing length, then for the deflection of the membrane in an advantageous manner on both sides in each case about the same free space in the housing available.
  • the anchoring part at the peripheral edge of the membrane can preferably be formed by a thickened edge bead of the membrane, which thus forms a kind of sealing ring at the anchoring point.
  • the arrangement may in this case preferably be such that the opening edge of that shell, which is radially inwardly at the overlap point, forms an approximately C-shaped hollow profile, which forms a radially inwardly and at a distance thereof radially outwardly extending legs between which the edge bead of the membrane is receivable, which rests on its outer side on the inside of the overlapping opening edge of the other shell.
  • the arrangement is such that the opening edge of the radially outer shell at the overlap site to abklesslosen transition of the outer surface of both shells abuts an annular surface which is formed by a step at the opening edge of the other shell at the transition to Hollow profile is provided. This results in not only a formed by the outside of the wrap, paragraphless, smooth outer contour of the storage enclosure, but the shells are additionally secured against a relative axial movement directed against each other.
  • the shells are formed from an aluminum alloy, which results in a particularly low weight despite high load capacity.
  • the terminals of the shells are formed by coaxial to the longitudinal axis, integrally formed connection body, which is followed by the wall of the respective shell with respect to the thickness of the connection body of reduced wall thickness.
  • Particularly good strength properties result when the wrapping forms a thickening in the region of the transition between the connection body and the reduced wall thickness of the shell.
  • the wrapping also acts as a reinforcement of the relevant connection body against acting during operation on him load forces or vibrations.
  • the wrapping may be formed of a material containing carbon, Kevlar ® -, glass, boron, Al 2 O 3 fibers or a mixture containing thereof.
  • an approximately pear-shaped to a longitudinal axis 3 rotationally symmetrical storage housing is designated as a whole with 1.
  • This has, arranged concentrically to the axis 3, a connection body 5 and a connection body 7, wherein the connection body 5 an inlet 9 for filling the adjoining gas side 11 with a working gas, preferably N 2 , while the connection body 7 has a fluid inlet 13 as Connection with a fluid side 15 forms.
  • these metallic housing parts each form a rotationally symmetrical to the axis 3, thin-walled shell, wherein the top in the drawing shell 17 and the underlying shell are designated 19.
  • the overlapping region 21 of the shells 17 and 19 is designed so that in the transition region 21, a membrane 33 formed of elastomeric material is both mechanically fixed to the storage housing 1 with its peripheral edge and forms a seal between the gas side 11 and the fluid side 15.
  • the membrane 33 has in this regard a peripheral edge bead 35, which is clamped between the opening edge 25 of the outer region 19 on the overlapping region 21 and the opening edge 23 of the inner shell 17.
  • the opening edge 23 of the upper shell 17 forms a radially inwardly drawn hollow profile approximately C-shaped configuration, with a radially inwardly extending leg 37 and an axial distance from this, radially to outside striving leg 39, which overlap between the edge bead 35 of the membrane 33, the outside of the smooth-surface opening edge 25 of the lower shell 19 rests.
  • This configuration of the overlap region 21 not only results in a mechanically secure and fluid-tight clamping of the membrane 33 at its thickened bead 35, but also leads to a clamping of the overlapping end edges 23, 25 of the shells 17 and 19.
  • the upper shell 17 forms on Transition to the hollow profile, a step 41 to form a radially retracted annular surface on which the galttflambaige opening edge 25 of the lower shell 19 is applied so that the transition of the two shells 17 and 19 on the overlap region 21 on the outside is without offset, so that the reinforcing wrap 27 at her Outside one also in the overlap region 21 smooth-surfaced, choppy contour forms.
  • the step 41 also forms a backup of the shells 17 and 19 against a mutually directed axial movement due to the generated by the wrapping 27, acting on the shells 17, 19 supporting force.
  • a formed from a fiber composite wrap 27 which may be designed in a conventional manner, therefore, results in conjunction with shells formed from an aluminum material 17, 19 a very high pressure resistance and reliability in the simplest design and in particular at a minimum in construction weight.
  • the reinforcing wrap 27 may be formed from a fiber reinforcement such as carbon, aramid, glass, boron, ALO 3 fibers or mixtures thereof.
  • these fibers are embedded in a base matrix of thermosets, such as epoxy or phenolic resins, or in thermoplastics.
  • FIG. 3 shown embodiment differs from the example first described basically only insofar as at the transition regions 29, 31 between the connecting bodies 5 and 7 and the adjoining thin-walled portion of the shells 17, 19, wherein in Fig. 3 only the transition region 29 is shown on the shell 17, the wrapping 27 each forms a thickening region 45.
  • This thickening region conforms to an axially extending, cylindrical outer surface 47 of the respective connection body 5, 7 in such a way that the winding 27 surrounds a connection body 5, 7
  • Reinforcing ring forms, which supports the respective connection body 5, 7 relative to the thin-walled shell part and thus forms a reinforcement of the connection body 5 and 7 relative to the rest of the storage housing 1, whereby mechanical, static or dynamic, acting on the connection bodies 5, 7 forces in the reinforcing wrapping 27 are introduced, resulting in a particularly high level of operational reliability under heavy loads, as they can occur, for example, in competition vehicles in racing.
  • the winding has been optimized insofar as a substantially constant thickness is maintained along the circumference of the housing.
  • the winding is chosen differently from the width or thickness, in particular the thickness of the winding increases in the direction of the upper terminal. In such a way, however, it is also possible to compensate for these at places of high stress by an increasingly applied winding.

Abstract

The accumulator has a separating element separating inner working chambers within an accumulator housing (1) from each other, where the housing is formed by housing shells. The shells are connected with each other at its front sides by a fiber winding or a fiber clutch in a pressure-sealed manner, and are made of aluminum alloy. The winding is made of a material e.g. carbon-, Kevlar(RTM: para-aramid synthetic fiber), glass-, boron- or alumina fiber. The shells are provided in form of rotational bodies with respect to a longitudinal axis (3) of the housing.

Description

Die Erfindung betrifft einen Hydrospeicher mit mindestens zwei Gehäuseschalen und mindestens einem Trennelement, das innerhalb des mittels der Gehäuseschalen gebildeten Gehäuses einzelne Arbeitsräume vorzugsweise mediendicht voneinander trennt, wobei zur Bildung des Gehäuses die Gehäuseschalen mit ihren freien Stirnseiten in Aneinanderlage sind.The invention relates to a hydraulic accumulator having at least two housing shells and at least one separating element which preferably separates medium-tight inside the housing formed by the housing shells, wherein the housing shells with their free end faces in juxtaposition to form the housing.

Bei Druckbehältern zur Speicherung flüssiger oder gasförmiger, unter Druck stehender Medien ist es Stand der Technik (vgl. DE 10 2006 004 121 A1 ), das betreffende Speichergehäuse in Composite-Bauweise derart zu realisieren, dass eine verstärkende Umwicklung aus Faserverbundwerkstoffen einen Bestandteil des Speichergehäuses bildet. Die DE 10 2006 004 120 A1 offenbart auch einen Hydrospeicher in Form eines Membranspeichers, bei dem zusätzlich zu metallischen Gehäuseteilen, die jeweils einen Anschlussbereich an der Gasseite und an der Fluidseite des Speichers bilden, als weiteres Gehäusebestandteil eine verstärkende Umwicklung aus einem Fasermaterial vorgesehen ist.In pressure vessels for storing liquid or gaseous, pressurized media, it is state of the art (see. DE 10 2006 004 121 A1 ), to realize the respective memory housing in composite construction such that a reinforcing wrapping of fiber composites forms a part of the storage enclosure. The DE 10 2006 004 120 A1 also discloses a hydraulic accumulator in the form of a diaphragm accumulator, in which, in addition to metallic housing parts which each form a connection region on the gas side and on the fluid side of the accumulator, a reinforcing winding of a fiber material is provided as a further housing component.

Je nach Einsatzgebiet müssen Hydrospeicher unterschiedlichen Anforderungen gerecht werden. Besonders hohe Anforderungen sind zu erfüllen, wenn derartige Speicher in Hydrauliksystemen hoch entwickelter Kraftfahrzeuge benutzt werden. Dies ist in besonderem Maße der Fall, wenn ein Einsatz bei Wettbewerbsfahrzeugen, wie Formelrennwagen, vorgesehen ist. In diesen Fällen müssen die betreffenden Hydrospeicher nicht nur hohen Belastungen gewachsen sein, und zwar sowohl hinsichtlich mechanischer Belastungen, statischer und dynamischer Natur, einschließlich äußerst hoher Druckbelastungen, sondern es ist darüber hinaus zwingend, dass die Betriebssicherheit, trotz der hohen Belastung, bei geringstem Baugewicht des Speichers erreicht wird.Depending on the application, hydraulic accumulators have to meet different requirements. Particularly high demands are to be met if such accumulators are used in hydraulic systems of sophisticated motor vehicles. This is especially the case when a Use in competition vehicles, such as Formula racing cars, is provided. In these cases, the respective hydraulic accumulators must not only cope with high loads, both in terms of mechanical loads, static and dynamic nature, including extremely high pressure loads, but it is also imperative that the reliability, despite the high load, with the lowest construction weight of the memory is reached.

Im Hinblick auf diese Problematik stellt sich die Erfindung die Aufgabe, einen Hydrospeicher der betrachteten Art zur Verfügung zu stellen, der sich, obgleich er den erwähnten, hohen Belastungen gewachsen ist, durch ein minimales Baugewicht auszeichnet.In view of this problem, the invention has the object to provide a hydraulic accumulator of the type considered available, which, although he is able to cope with the mentioned, high loads, characterized by a minimum construction weight.

Erfindungsgemäß ist diese Aufgabe durch einen Hydrospeicher gelöst, der die Merkmale des Patentanspruches 1 in seiner Gesamtheit aufweist.According to the invention this object is achieved by a hydraulic accumulator having the features of claim 1 in its entirety.

Demgemäß besteht eine wesentliche Besonderheit der Erfindung darin, dass die das Speichergehäuse bildenden Gehäuseschalen an ihren einander zugewandten Stirnseiten mittels einer von außen aufgebrachten Umwicklung aus einem Faserverbundwerkstoff oder mittels eines Fasergelegeauftrages druckdicht miteinander verbunden sind. Bei einfachster Bauweise und dadurch minimalem Baugewicht ist dadurch ein Hydrospeicher geschaffen, der bei hohen Belastungen, seien es mechanische, statische oder dynamische Belastungen und/oder Druckbelastungen und/oder thermische Belastungen, ein Höchstmaß an Betriebssicherheit gewährleistet.Accordingly, a significant feature of the invention is that the housing shells forming the storage housing are pressure-tightly connected to one another at their mutually facing end sides by means of an externally applied wrapping made of a fiber composite material or by means of a fiber-laid application. With the simplest construction and thus minimum structural weight of a hydraulic accumulator is created, which ensures high levels of reliability at high loads, be it mechanical, static or dynamic loads and / or pressure loads and / or thermal loads.

Bei besonders vorteilhaften Ausführungsbeispielen sind vorzugsweise metallische Gehäuseschalen in Form von Rotationskörpern bezüglich der Längsachse des Gehäuses vorgesehen, deren einander zugekehrte Öffnungsränder einander derart überlappen, dass die an der Überlappung wirksame, durch die aus einem Faserverbundmaterial gebildete Umwicklung erzeugte Abstützkraft und die dieser entgegenwirkende, aufgrund von Innendruck im Speichergehäuse erzeugte Druckkraft eine Klemmkraft an der Überlappung als Haltekraft für die gegenseitige Verankerung der Öffnungsränder der Schalen bilden. Diese Art der gegenseitigen Verankerung gewährleistet bei einfachster Bauweise und geringstem Baugewicht eine Druckfestigkeit des Gehäuses bei sehr hohen Betriebsdrücken, beispielsweise bei Druckspitzen bis 250 bar oder mehr, selbst bei geringen Wandstärken der Schalen, wobei aufgrund der als Gegenlager dienenden äußeren Abstützung durch die Umwicklung der Innendruck im Speichergehäuse die Klemmkräfte gegenüber dem durch die Umwicklung gebildeten Gegenlager verstärkt.In particularly advantageous embodiments, metallic housing shells in the form of rotational bodies are preferably provided with respect to the longitudinal axis of the housing whose mutually facing opening edges overlap one another such that the wrapping, which is effective at the overlap, is formed by the fiber composite material generated supporting force and this counteracting, generated due to internal pressure in the storage housing pressure force form a clamping force on the overlap as a holding force for the mutual anchoring of the opening edges of the shells. This type of mutual anchoring ensures the simplest design and lowest construction weight pressure resistance of the housing at very high operating pressures, for example, at pressure peaks up to 250 bar or more, even at low wall thickness of the shells, which due to serving as an abutment outer support by wrapping the internal pressure reinforced in the storage housing, the clamping forces against the counter-bearing formed by the winding.

In besonders vorteilhafter Weise kann das bewegbare Trennelement durch eine Membran gebildet sein, deren Umfangsrand an der Überlappung mit einem Verankerungsteil zwischen die Öffnungsränder der Schalen derart eingreift, dass die an der Überlappung wirkende Klemmkraft die Haltekraft für die Verankerung des Verankerungsteils der Membran an den Öffnungsrändern der Schalen bildet. Somit steht die an der Überlappung wirkende Klemmkraft gleichzeitig als Haltekraft für die Verankerung der Membran zur Verfügung, was zu einer besonders signifikanten Vereinfachung der Bauweise führt.In a particularly advantageous manner, the movable separating element may be formed by a membrane whose peripheral edge engages the overlap with an anchoring part between the opening edges of the shells so that the clamping force acting on the overlap clamping force for anchoring the anchoring part of the membrane at the opening edges of the Shells forms. Thus, the clamping force acting on the overlap is simultaneously available as a holding force for the anchoring of the membrane, resulting in a particularly significant simplification of the design.

Wenn hierbei die Anordnung so getroffen ist, dass sich die Öffnungsränder der Schalen im Bereich der halben Gehäuselänge überlappen, dann steht für die Auslenkung der Membran in vorteilhafter Weise beidseits jeweils etwa der gleiche Freiraum im Gehäuse zur Verfügung.If in this case the arrangement is made such that the opening edges of the shells overlap in the region of half the housing length, then for the deflection of the membrane in an advantageous manner on both sides in each case about the same free space in the housing available.

Das Verankerungsteil am Umfangsrand der Membran kann vorzugsweise durch einen verdickten Randwulst der Membran gebildet sein, der insofern eine Art Dichtring an der Verankerungsstelle bildet.The anchoring part at the peripheral edge of the membrane can preferably be formed by a thickened edge bead of the membrane, which thus forms a kind of sealing ring at the anchoring point.

Die Anordnung kann hierbei vorzugsweise so getroffen sein, dass der Öffnungsrand derjenigen Schale, die an der Überlappungsstelle radial innenliegend ist, ein annähernd C-förmiges Hohlprofil bildet, das einen radial nach innen und einen im Abstand davon radial nach außen verlaufenden Schenkel bildet, zwischen denen der Randwulst der Membran aufnehmbar ist, der an seiner Außenseite an der Innenseite des überlappenden Öffnungsrandes der anderen Schale anliegt.The arrangement may in this case preferably be such that the opening edge of that shell, which is radially inwardly at the overlap point, forms an approximately C-shaped hollow profile, which forms a radially inwardly and at a distance thereof radially outwardly extending legs between which the edge bead of the membrane is receivable, which rests on its outer side on the inside of the overlapping opening edge of the other shell.

Bei besonders bevorzugten Ausführungsbeispielen ist die Anordnung so getroffen, dass der Öffnungsrand der an der Überlappungsstelle radial außenliegenden Schale zur Bildung eines absatzlosen Überganges der Außenfläche beider Schalen an einer Ringfläche anliegt, die durch eine Stufe gebildet ist, die am Öffnungsrand der anderen Schale am Übergang zum Hohlprofil vorgesehen ist. Dadurch ergibt sich nicht nur eine durch die Außenseite der Umwicklung gebildete, absatzlose, glatte Außenkontur des Speichergehäuses, sondern die Schalen sind zusätzlich gegen eine gegeneinander gerichtete relative Axialbewegung gesichert.In particularly preferred embodiments, the arrangement is such that the opening edge of the radially outer shell at the overlap site to abklesslosen transition of the outer surface of both shells abuts an annular surface which is formed by a step at the opening edge of the other shell at the transition to Hollow profile is provided. This results in not only a formed by the outside of the wrap, paragraphless, smooth outer contour of the storage enclosure, but the shells are additionally secured against a relative axial movement directed against each other.

Bei besonders bevorzugten Ausführungsbeispielen sind die Schalen aus einer Aluminiumlegierung gebildet, wodurch sich trotz hoher Belastbarkeit ein besonders geringes Baugewicht ergibt.In particularly preferred embodiments, the shells are formed from an aluminum alloy, which results in a particularly low weight despite high load capacity.

Vorzugsweise sind die Anschlüsse der Schalen durch zur Längsachse koaxiale, angeformte Anschlusskörper gebildet, an die sich die Wand der betreffenden Schale mit gegenüber der Dicke der Anschlusskörper verringerter Wandstärke anschließt. Besonders gute Festigkeitseigenschaften ergeben sich, wenn die Umwicklung im Bereich des Überganges zwischen Anschlusskörper und verringerter Wandstärke der Schale eine Verdickung bildet. Dadurch wirkt die Umwicklung auch als Verstärkung des betreffenden Anschlusskörpers gegen im Betrieb an ihm wirkende Lastkräfte oder Schwingungen.Preferably, the terminals of the shells are formed by coaxial to the longitudinal axis, integrally formed connection body, which is followed by the wall of the respective shell with respect to the thickness of the connection body of reduced wall thickness. Particularly good strength properties result when the wrapping forms a thickening in the region of the transition between the connection body and the reduced wall thickness of the shell. As a result, the wrapping also acts as a reinforcement of the relevant connection body against acting during operation on him load forces or vibrations.

Die Umwicklung kann aus einem Material gebildet sein, das Kohlenstoff-, Kevlar®-, Glas-, Bor-, Al2O3-Fasern oder ein Gemisch hieraus enthält.The wrapping may be formed of a material containing carbon, Kevlar ® -, glass, boron, Al 2 O 3 fibers or a mixture containing thereof.

Nachstehend ist die Erfindung anhand von in der Zeichnung dargestellten Ausführungsbeispielen im Einzelnen erläutert. Es zeigen:

Fig. 1
eine gegenüber einer praktischen Ausführungsform etwa um den Faktor 1,4 vergrößert gezeichnete Seitenansicht eines Ausführungsbeispieles des erfindungsgemäßen Hydrospeichers;
Fig. 2
einen schematisch leicht vereinfacht gezeichneten Längsschnitt des Ausführungsbeispieles von Fig. 1 und
Fig. 3
eine teilweise aufgeschnitten gezeichnete, etwa im gleichen Maßstab wie Fig. 1 und 2 gezeichnete Seitenansicht eines zweiten Ausführungsbeispieles des Hydrospeichers.
The invention with reference to embodiments shown in the drawings will be explained in detail. Show it:
Fig. 1
an enlarged compared to a practical embodiment, for example by a factor of 1.4 side view of an embodiment of the hydraulic accumulator according to the invention;
Fig. 2
a schematically slightly simplified drawn longitudinal section of the embodiment of Fig. 1 and
Fig. 3
a partially cut drawn, on about the same scale as Fig. 1 and 2 drawn side view of a second embodiment of the hydraulic accumulator.

In der Zeichnung ist ein annähernd birnenförmiges zu einer Längsachse 3 rotationssymmetrisches Speichergehäuse als Ganzes mit 1 bezeichnet. Dieses weist, zur Achse 3 konzentrisch angeordnet, einen Anschlusskörper 5 und einen Anschlusskörper 7 auf, wobei der Anschlusskörper 5 einen Eingang 9 zur Befüllung der daran angrenzenden Gasseite 11 mit einem Arbeitsgas, vorzugsweise N2, aufweist, während der Anschlusskörper 7 einen Fluideinlass 13 als Verbindung mit einer Fluidseite 15 bildet. Mit jedem Anschlusskörper 5 und 7 einstückig aus einer Aluminiumlegierung geformt, bilden diese metallischen Gehäuseteile jeweils eine zur Achse 3 rotationssymmetrische, dünnwandige Schale, wobei die in der Zeichnung oben liegende Schale mit 17 und die untenliegende Schale mit 19 bezeichnet sind. In dem beim vorliegenden Beispiel auf mittlerer Länge gelegenen Überlappungsbereich 21 überlappen sich die Öffnungsränder 23 und 25 der Schalen 17 bzw. 19. Eine verstärkende Umwicklung 27 aus einem Faserverbundmaterial, worauf unten näher eingegangen wird, erstreckt sich über die gesamte Außenseite des Speichergehäuses 1 vom Übergangsbereich 29, wo der Anschlusskörper 5 in den dünnwandigen Abschnitt der Schale 17 übergeht, bis zum Übergangsbereich 31 am anderen Anschlusskörper 7.In the drawing, an approximately pear-shaped to a longitudinal axis 3 rotationally symmetrical storage housing is designated as a whole with 1. This has, arranged concentrically to the axis 3, a connection body 5 and a connection body 7, wherein the connection body 5 an inlet 9 for filling the adjoining gas side 11 with a working gas, preferably N 2 , while the connection body 7 has a fluid inlet 13 as Connection with a fluid side 15 forms. With each connector body 5 and 7 integrally molded from an aluminum alloy, these metallic housing parts each form a rotationally symmetrical to the axis 3, thin-walled shell, wherein the top in the drawing shell 17 and the underlying shell are designated 19. In the mid-length overlapping area 21 in the present example, the opening edges 23 and 25 of the shells overlap 17 and 19. A reinforcing wrapping 27 made of a fiber composite material, which will be discussed in more detail below, extends over the entire outside of the storage housing 1 from the transition region 29, where the connecting body 5 merges into the thin-walled portion of the shell 17, to the transition region 31 on other connection body 7.

Der Überlappungsbereich 21 der Schalen 17 und 19 ist so gestaltet, dass im Übergangsbereich 21 eine aus elastomerem Material gebildete Membran 33 mit ihrem Umfangsrand sowohl mechanisch am Speichergehäuse 1 festgelegt ist als auch eine Abdichtung zwischen Gasseite 11 und Fluidseite 15 bildet. Die Membran 33 weist diesbezüglich einen umfänglichen Randwulst 35 auf, der zwischen dem Öffnungsrand 25 der am Überlappungsbereich 21 außenliegenden Schale 19 und dem Öffnungsrand 23 der innenliegenden Schale 17 eingespannt ist. Während der Öffnungsrand 25 der unteren Schale 19 glattflächig endet, bildet der Öffnungsrand 23 der oberen Schale 17 ein radial nach innen eingezogenes Hohlprofil näherungsweise C-förmiger Gestalt, mit einem radial nach innen verlaufenden Schenkel 37 und einem von diesem einen axialen Abstand aufweisenden, radial nach außen strebenden Schenkel 39, die zwischen sich den Randwulst 35 der Membran 33 übergreifen, dessen Außenseite am glattflächigen Öffnungsrand 25 der unteren Schale 19 anliegt.The overlapping region 21 of the shells 17 and 19 is designed so that in the transition region 21, a membrane 33 formed of elastomeric material is both mechanically fixed to the storage housing 1 with its peripheral edge and forms a seal between the gas side 11 and the fluid side 15. The membrane 33 has in this regard a peripheral edge bead 35, which is clamped between the opening edge 25 of the outer region 19 on the overlapping region 21 and the opening edge 23 of the inner shell 17. While the opening edge 25 of the lower shell 19 ends smoothly, the opening edge 23 of the upper shell 17 forms a radially inwardly drawn hollow profile approximately C-shaped configuration, with a radially inwardly extending leg 37 and an axial distance from this, radially to outside striving leg 39, which overlap between the edge bead 35 of the membrane 33, the outside of the smooth-surface opening edge 25 of the lower shell 19 rests.

Diese Gestaltung des Überlappungsbereiches 21 resultiert nicht nur in einer mechanisch sicheren und fluiddichten Einspannung der Membran 33 an deren verdicktem Randwulst 35, sondern führt auch zu einer Klemmung der einander überlappenden Endränder 23, 25 der Schalen 17 bzw. 19. Die obere Schale 17 bildet am Übergang zum Hohlprofil eine Stufe 41 zur Bildung einer radial eingezogenen Ringfläche, an der der galttflächige Öffnungsrand 25 der unteren Schale 19 so anliegt, dass der Übergang der beiden Schalen 17 und 19 am Überlappungsbereich 21 außenseitig absatzlos erfolgt, so dass die verstärkende Umwicklung 27 an ihrer Außenseite eine auch im Überlappungsbereich 21 glattflächige, absatzlose Kontur bildet. Die Stufe 41 bildet zudem eine Sicherung der Schalen 17 und 19 gegen eine gegeneinander gerichtete Axialbewegung aufgrund der durch die Umwicklung 27 erzeugten, an den Schalen 17, 19 wirkenden Abstützkraft.This configuration of the overlap region 21 not only results in a mechanically secure and fluid-tight clamping of the membrane 33 at its thickened bead 35, but also leads to a clamping of the overlapping end edges 23, 25 of the shells 17 and 19. The upper shell 17 forms on Transition to the hollow profile, a step 41 to form a radially retracted annular surface on which the galttflächige opening edge 25 of the lower shell 19 is applied so that the transition of the two shells 17 and 19 on the overlap region 21 on the outside is without offset, so that the reinforcing wrap 27 at her Outside one also in the overlap region 21 smooth-surfaced, choppy contour forms. The step 41 also forms a backup of the shells 17 and 19 against a mutually directed axial movement due to the generated by the wrapping 27, acting on the shells 17, 19 supporting force.

Andererseits bewirkt im Speichergehäuse 1 herrschender Innendruck gegenüber dem durch die verstärkende Umhüllung 27 gebildeten Gegenlager eine Anpresskraft der im Überlappungsbereich 21 aneinanderliegenden Bauelemente, wodurch sich durch den Betriebsdruck eine Verstärkung der Verankerung der im Überlappungsbereich 21 aneinanderliegenden Bauelemente , einschließlich der Erhöhung der Abdichtwirkung, ergibt.On the other hand, in the accumulator housing 1 prevailing internal pressure relative to the abutment formed by the reinforcing sheath 27 a contact force of the abutting in the overlap region 21 components, resulting in an increase in the anchoring of the abutting in the overlap region 21 components, including increasing the Abdichtwirkung results by the operating pressure.

Bei einer aus einem Faserverbundwerkstoff gebildeten Umwicklung 27, die in an sich bekannter Weise gestaltet sein kann, ergibt sich daher in Verbindung mit aus einem Aluminiumwerkstoff gebildeten Schalen 17, 19 eine sehr hohe Druckfestigkeit und Betriebssicherheit bei einfachster Bauweise und insbesondere bei einem Mindestmaß an Baugewicht. Die verstärkende Umwicklung 27 kann aus einer Faserverstärkung, wie Kohlenstoff-, Aramid-, Glas-, Bor-, ALO3-Fasern oder Gemischen hieraus gebildet sein. Vorzugsweise sind diese Faserstoffe in einer Grundmatrix aus Duromeren, beispielsweise Epoxid- oder Phenolharzen, oder in Thermoplasten eingebettet.In a formed from a fiber composite wrap 27, which may be designed in a conventional manner, therefore, results in conjunction with shells formed from an aluminum material 17, 19 a very high pressure resistance and reliability in the simplest design and in particular at a minimum in construction weight. The reinforcing wrap 27 may be formed from a fiber reinforcement such as carbon, aramid, glass, boron, ALO 3 fibers or mixtures thereof. Preferably, these fibers are embedded in a base matrix of thermosets, such as epoxy or phenolic resins, or in thermoplastics.

Das in Fig. 3 gezeigte Ausführungsbeispiel unterscheidet sich vom zuerst beschriebenen Beispiel grundsätzlich lediglich insofern, als an den Übergangsbereichen 29, 31 zwischen den Anschlusskörpern 5 und 7 und dem sich daran anschließenden dünnwandigen Bereich der Schalen 17, 19, wobei in Fig. 3 lediglich der Übergangsbereich 29 an der Schale 17 gezeigt ist, die Umwicklung 27 jeweils einen Verdickungsbereich 45 bildet. Dieser Verdickungsbereich schmiegt sich an eine sich in Axialrichtung erstreckende, zylindrische Außenfläche 47 des jeweiligen Anschlusskörpers 5, 7 so an, dass die Umwicklung 27 einen den Anschlusskörper 5, 7 umgebenden Verstärkungsring bildet, der den jeweiligen Anschlusskörper 5, 7 gegenüber dem dünnwandigen Schalenteil abstützt und somit eine Verstärkung der Anschlusskörper 5 und 7 gegenüber dem übrigen Speichergehäuse 1 bildet, wodurch mechanische, statische oder dynamische, an den Anschlusskörpern 5, 7 wirkende Kräfte in die verstärkende Umwicklung 27 eingeleitet werden, wodurch sich eine besonders hohe Betriebssicherheit bei starken Belastungen ergibt, wie sie beispielsweise bei Wettbewerbsfahrzeugen im Rennbetrieb auftreten können. Bei der Ausführungsform nach der Fig.2 wurde die Wicklung insoweit optimiert, als entlang des Gehäuseumfanges eine im wesentlichen konstante Dicke beibehalten wird. Bei der Ausführungsform nach der Fig.3 ist die Wicklung von der Breite oder Dicke her gesehen unterschiedlich gewählt, insbesondere nimmt die Dicke der Wicklung in Richtung des oberen Anschlusses zu. Dergestalt besteht aber auch die Möglichkeit, an Stellen hoher Beanspruchung diese durch eine verstärkt aufgebrachte Wicklung zu kompensieren.This in Fig. 3 shown embodiment differs from the example first described basically only insofar as at the transition regions 29, 31 between the connecting bodies 5 and 7 and the adjoining thin-walled portion of the shells 17, 19, wherein in Fig. 3 only the transition region 29 is shown on the shell 17, the wrapping 27 each forms a thickening region 45. This thickening region conforms to an axially extending, cylindrical outer surface 47 of the respective connection body 5, 7 in such a way that the winding 27 surrounds a connection body 5, 7 Reinforcing ring forms, which supports the respective connection body 5, 7 relative to the thin-walled shell part and thus forms a reinforcement of the connection body 5 and 7 relative to the rest of the storage housing 1, whereby mechanical, static or dynamic, acting on the connection bodies 5, 7 forces in the reinforcing wrapping 27 are introduced, resulting in a particularly high level of operational reliability under heavy loads, as they can occur, for example, in competition vehicles in racing. In the embodiment of the Fig.2 the winding has been optimized insofar as a substantially constant thickness is maintained along the circumference of the housing. In the embodiment of the Figure 3 If the winding is chosen differently from the width or thickness, in particular the thickness of the winding increases in the direction of the upper terminal. In such a way, however, it is also possible to compensate for these at places of high stress by an increasingly applied winding.

Claims (11)

Hydrospeicher, mit mindestens zwei Gehäuseschalen (17, 19) und mindestens einem Trennelement (33), das innerhalb des mittels der Gehäuseschalen (17, 19) gebildeten Speichergehäuses (1) innere Arbeitsräume (11, 15), vorzugsweise mediendicht voneinander trennt, wobei zur Bildung des Gehäuses (1) die Gehäuseschalen (17, 19) mit ihren freien Stirnseiten in Aneinanderlage sind und wobei die einzelnen Gehäuseschalen (17, 19) mittels einer von außen aufgebrachten Faserumwicklung (27) oder mindestens eines aufgebrachten Fasergeleges druckdicht miteinander verbunden sind.Hydraulic accumulator, with at least two housing shells (17, 19) and at least one separating element (33) inside the housing housing (17, 19) formed by the storage housing (1) inner working spaces (11, 15), preferably medially separated from each other, wherein the Formation of the housing (1) are the housing shells (17, 19) with their free end faces in juxtaposition and wherein the individual housing shells (17, 19) by means of an externally applied Faserumwicklung (27) or at least one applied Fasergeleges are pressure-tightly interconnected. Hydrospeicher nach Anspruch 1, dadurch gekennzeichnet, dass Gehäuseschalen (17, 19) in Form von Rotationskörpern bezüglich der Längsachse (3) des Gehäuses (1) vorgesehen sind, deren einander zugekehrte Öffnungsränder (23, 25) einander derart überlappen, dass die an der Überlappung (21) wirksame, durch die aus einem Faserverbundmaterial gebildete Umwicklung (27) erzeugte Abstützkraft und die dieser entgegenwirkende, aufgrund von Innendruck im Speichergehäuse (1) erzeugte Druckkraft eine Klemmkraft an der Überlappung (21) als Haltekraft für die gegenseitige Verankerung der Öffnungsränder (23, 25) der Schalen (17, 19) bilden.Hydraulic accumulator according to claim 1, characterized in that housing shells (17, 19) in the form of rotational bodies with respect to the longitudinal axis (3) of the housing (1) are provided, the mutually facing opening edges (23, 25) overlap each other such that on the Overlap (21) effective support force generated by the wrapping (27) formed from a fiber composite material and the counteracting, due to internal pressure in the storage housing (1) generated compressive force a clamping force on the overlap (21) as a holding force for the mutual anchoring of the opening edges ( 23, 25) of the shells (17, 19) form. Hydrospeicher nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das bewegbare Trennelement durch eine Membran (33) gebildet ist, deren Umfangsrand an der Überlappung (21) mit einem Verankerungsteil (35) zwischen die Öffnungsränder (23, 25) der Schalen (17, 19) derart eingreift, dass die an der Überlappung (21) wirkende Klemmkraft die Haltekraft für die Verankerung des Verankerungsteils (35) der Membran (33) an den Öffnungsrändern (23, 25) der Schalen (17, 19) bildet.A hydraulic accumulator according to claim 1 or 2, characterized in that the movable separating element is formed by a membrane (33) whose peripheral edge at the overlap (21) with an anchoring part (35) between the opening edges (23, 25) of the shells (17, 19) engages in such a way that the clamping force acting on the overlap (21) forms the retaining force for anchoring the anchoring part (35) of the membrane (33) to the opening edges (23, 25) of the shells (17, 19). Hydrospeicher nach Anspruch 1, dadurch gekennzeichnet, dass sich die Öffnungsränder (23, 25) der Schalen (17, 19) im Bereich der halben Gehäuselänge überlappen.Hydraulic accumulator according to claim 1, characterized in that the opening edges (23, 25) of the shells (17, 19) overlap in the region of half the housing length. Hydrospeicher nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Verankerungsteil der Membran (33) durch einen verdickten Randwulst (35) am Umfangsrand der Membran (33) gebildet ist.Hydraulic accumulator according to claim 3 or 4, characterized in that the anchoring part of the membrane (33) is formed by a thickened edge bead (35) at the peripheral edge of the membrane (33). Hydrospeicher nach Anspruch 5, dadurch gekennzeichnet, dass der Öffnungsrand (23) derjenigen Schale (17), die an der Überlappungsstelle (21) radial innenliegend ist, ein annähernd C-förimges, radial nach innen eingezogenes Hohlprofil bildet, das einen radial nach innen verlaufenden Schenkel (37) und einen im Abstand radial nach außen verlaufenden Schenkel (39) bildet, zwischen denen der Randwulst (35) der Membran (33) aufnehmbar ist, der an seiner Außenseite an der Innenseite des überlappenden Öffnungsrandes (25) der anderen Schale (19) anliegt.A hydraulic accumulator according to claim 5, characterized in that the opening edge (23) of that shell (17) which is radially inwardly at the overlapping point (21) forms an approximately C-shaped, radially inwardly drawn hollow profile, which extends radially inwardly Leg (37) and a radially outwardly extending leg (39), between which the edge bead (35) of the membrane (33) is receivable on its outside on the inside of the overlapping opening edge (25) of the other shell ( 19) is applied. Hydrospeicher nach Anspruch 6, dadurch gekennzeichnet, dass der Öffnungsrand (25) der an der Überlappungsstelle (21) radial außen liegenden Schale (19) zur Bildung eines absatzlosen Überganges der Außenflächen beider Schalen (17, 19) an einer Ringfläche anliegt, die durch eine Stufe (41) gebildet ist, die am Öffnungsrand (23) der anderen Schale (17) am Übergang zum Hohlprofil vorgesehen ist.A hydraulic accumulator according to claim 6, characterized in that the opening edge (25) of the at the overlapping point (21) radially outer shell (19) to form a seedless transition of the outer surfaces of the two shells (17, 19) bears against an annular surface which Step (41) is formed, which is provided at the opening edge (23) of the other shell (17) at the transition to the hollow profile. Hydrospeicher nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Schalen (17, 19) aus einer Aluminiumlegierung gebildet sind.Hydraulic accumulator according to one of claims 1 to 7, characterized in that the shells (17, 19) are formed from an aluminum alloy. Hydrospeicher nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, dass Anschlüsse an den Schalen (17, 19) durch zur Achse (3) koaxiale Anschlusskörper (5, 7) gebildet sind, an die sich die Wand der jeweiligen Schale (17, 19) mit gegenüber der Dicke der Anschlusskörper (5, 7) verringerter Wandstärke anschließt.Hydraulic accumulator according to one of Claims 2 to 8, characterized in that connections to the shells (17, 19) are formed by connecting bodies (5, 7) which are coaxial with the axis (3) and against which the wall of the respective shells (17, 19 ) with respect to the thickness of the connecting body (5, 7) reduced wall thickness connects. Hydrospeicher nach Anspruch 9, dadurch gekennzeichnet, dass die Umwicklung (27) im Bereich (29, 31) des Überganges zwischen Anschlusskörper (5, 7) und verringerter Wandstärke der Schalen (17, 19) eine Verdickung (45) bildet.Hydraulic accumulator according to claim 9, characterized in that the wrapping (27) in the region (29, 31) of the transition between connection body (5, 7) and reduced wall thickness of the shells (17, 19) forms a thickening (45). Hydrospeicher nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Umwicklung (27) aus einem Material gebildet ist, das Kohlenstoff-, Kevlar®-, Glas-, Bor-, AL2O3-Fasern oder ein Gemisch hieraus enthält.Hydraulic accumulator according to one of claims 1 to 10, characterized in that the wrapping (27) is formed of a material containing carbon, Kevlar ® , glass, boron, AL 2 O 3 fibers or a mixture thereof.
EP09015615A 2008-12-23 2009-12-17 Hydraulic accumulator Active EP2202412B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008062837A DE102008062837A1 (en) 2008-12-23 2008-12-23 hydraulic accumulator

Publications (2)

Publication Number Publication Date
EP2202412A1 true EP2202412A1 (en) 2010-06-30
EP2202412B1 EP2202412B1 (en) 2011-10-26

Family

ID=42104621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09015615A Active EP2202412B1 (en) 2008-12-23 2009-12-17 Hydraulic accumulator

Country Status (3)

Country Link
EP (1) EP2202412B1 (en)
AT (1) ATE530773T1 (en)
DE (1) DE102008062837A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105705435A (en) * 2013-09-24 2016-06-22 滨特尔民用水处理有限责任公司 Pressure vessel system and method
EP3904698A1 (en) * 2020-04-30 2021-11-03 Steelhead Composites, LLC Lightweight composite overwrapped accumulators

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9074685B2 (en) * 2010-02-26 2015-07-07 GM Global Technology Operations LLC Extruded tube welded vessel liner with injection molded end caps
DE102010050113B4 (en) 2010-10-29 2012-06-21 Mt Aerospace Ag Containers for receiving, storing and dispensing gaseous, liquid and solid media and their use

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB948675A (en) 1961-10-25 1964-02-05 Eaton Axles Ltd Improvements in or relating to hydraulic pressure accumulators
DE1198148B (en) * 1963-09-20 1965-08-05 Langen & Co Hydraulic pressure accumulator
DE2754606A1 (en) * 1977-12-08 1979-06-13 Integral Hydraulik Co Hydropneumatic pressure accumulator with resilient membrane - has diaphragm holder and filler body forming one piece component
US4595037A (en) * 1984-12-14 1986-06-17 Essef Industries, Inc. Split tank closure and diaphragm assembly
DE102006004120A1 (en) 2006-01-25 2007-07-26 Hydac Technology Gmbh Hydraulic accumulator, has coaxially abutting plastics casings, with poppet valve for controlling supply and extraction of medium
DE102006004121A1 (en) 2006-01-25 2007-07-26 Hydac Technology Gmbh Pressure tank for holding a liquid/gaseous fluid medium has a second plastic jacket encasing a first plastic jacket both attached to each other in a coaxial structure
US20080149636A1 (en) * 2001-10-12 2008-06-26 Enpress, L.L.C. Composite pressure vessel assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2371632A (en) * 1943-01-01 1945-03-20 Ideal Roller & Mfg Company Accumulator
DE2159293C3 (en) * 1971-11-30 1981-10-22 Gesellschaft für Hydraulik-Zubehör mbH, 6603 Sulzbach Hydropneumatic pressure vessel
DE20102209U1 (en) * 2001-02-07 2002-06-13 Sachsenring Automobiltechnik Pressure tanks, especially gas-tight plastic tanks
US20040173624A1 (en) * 2003-03-05 2004-09-09 Polymer & Steel Technologies Holding Company, L.L.C. Vessel diaphragm and method
EP1855046B1 (en) * 2005-03-02 2012-01-18 Toyota Jidosha Kabushiki Kaisha Gas container and method of producing the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB948675A (en) 1961-10-25 1964-02-05 Eaton Axles Ltd Improvements in or relating to hydraulic pressure accumulators
DE1198148B (en) * 1963-09-20 1965-08-05 Langen & Co Hydraulic pressure accumulator
DE2754606A1 (en) * 1977-12-08 1979-06-13 Integral Hydraulik Co Hydropneumatic pressure accumulator with resilient membrane - has diaphragm holder and filler body forming one piece component
US4595037A (en) * 1984-12-14 1986-06-17 Essef Industries, Inc. Split tank closure and diaphragm assembly
US20080149636A1 (en) * 2001-10-12 2008-06-26 Enpress, L.L.C. Composite pressure vessel assembly
DE102006004120A1 (en) 2006-01-25 2007-07-26 Hydac Technology Gmbh Hydraulic accumulator, has coaxially abutting plastics casings, with poppet valve for controlling supply and extraction of medium
DE102006004121A1 (en) 2006-01-25 2007-07-26 Hydac Technology Gmbh Pressure tank for holding a liquid/gaseous fluid medium has a second plastic jacket encasing a first plastic jacket both attached to each other in a coaxial structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105705435A (en) * 2013-09-24 2016-06-22 滨特尔民用水处理有限责任公司 Pressure vessel system and method
EP3904698A1 (en) * 2020-04-30 2021-11-03 Steelhead Composites, LLC Lightweight composite overwrapped accumulators

Also Published As

Publication number Publication date
EP2202412B1 (en) 2011-10-26
ATE530773T1 (en) 2011-11-15
DE102008062837A1 (en) 2010-07-01

Similar Documents

Publication Publication Date Title
EP2430318B1 (en) Hydraulic accumulator
EP2718570B1 (en) Pressure vessel
EP1989477A1 (en) Pressure vessel for storing liquid or gaseous media
EP2202412B1 (en) Hydraulic accumulator
EP2912320B1 (en) Separating device for fluid media
DE102018216993A1 (en) Air spring with thermoset connector
DE102009053592A1 (en) Bearing for arrangement in eye of e.g. wheel suspension arm of motor vehicle, has elastomer element provided with profile such that areas between element and inner sleeve and areas between element and outer sleeve are wavily formed
EP1918626B1 (en) Accumulator for damping pressure pulsations
EP2090801B1 (en) Pneumatic spring rollIing bellows
WO2012151709A1 (en) Cylinder bulkhead holder
DE102012200389B4 (en) Air spring cover fold with sealing ring
DE102009024794A1 (en) Hydrogen tank for use in motor vehicle, has multi-shell structure with tank volumes enclosed from each other, where higher and lower filling pressures of tank volumes are decreased outwardly, and tank walls exhibiting different shapes
EP2519747B1 (en) Guiding device for metal bellows
DE60012050T2 (en) PRESSURE CONTAINER WITH SEALING RING
DE102010015469A1 (en) Spring structure of several spring elements
EP1516123B1 (en) Hydraulic accumulator
EP3557117A2 (en) Pressure vessel and method for connecting a pressure vessel into a body structure
EP3289227B1 (en) Hydraulic accumulator
DE102018216023B4 (en) Air suspension unit with short cardanic fold
DE102008034834B4 (en) Air spring and strut
EP3067570A1 (en) Piston accumulator
DE102019209899B4 (en) Air spring with two connected bellows
DE102008013107A1 (en) Conduit element for exhaust systems
WO2010124815A1 (en) Cylindrical bodies made of a fiber-reinforced plastic
DE8204795U1 (en) Working cylinder for pneumatic or hydraulic pressure media

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA RS

17P Request for examination filed

Effective date: 20100528

RIC1 Information provided on ipc code assigned before grant

Ipc: F15B 1/10 20060101AFI20110413BHEP

Ipc: F17C 1/16 20060101ALI20110413BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ISLER & PEDRAZZINI AG

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502009001702

Country of ref document: DE

Effective date: 20111229

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20111026

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20111026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120126

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120226

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120227

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120127

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

BERE Be: lapsed

Owner name: HYDAC TECHNOLOGY G.M.B.H.

Effective date: 20111231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120126

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111231

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20120727

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111231

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502009001702

Country of ref document: DE

Effective date: 20120727

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120206

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111026

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20131217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131217

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20161213

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20171123

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20171212

Year of fee payment: 9

Ref country code: CH

Payment date: 20171211

Year of fee payment: 9

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 530773

Country of ref document: AT

Kind code of ref document: T

Effective date: 20171217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171217

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181217

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181231

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181231

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20231231

Year of fee payment: 15