EP2930374A1 - Dispositifs de stockage et procédé de montage destiné à fabriquer de tels dispositifs de stockage - Google Patents

Dispositifs de stockage et procédé de montage destiné à fabriquer de tels dispositifs de stockage Download PDF

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Publication number
EP2930374A1
EP2930374A1 EP15000660.9A EP15000660A EP2930374A1 EP 2930374 A1 EP2930374 A1 EP 2930374A1 EP 15000660 A EP15000660 A EP 15000660A EP 2930374 A1 EP2930374 A1 EP 2930374A1
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EP
European Patent Office
Prior art keywords
housing
storage
fixing point
holding device
housing parts
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
EP15000660.9A
Other languages
German (de)
English (en)
Other versions
EP2930374B1 (fr
Inventor
Herbert Baltes
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
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Hydac Technology GmbH
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Filing date
Publication date
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Publication of EP2930374A1 publication Critical patent/EP2930374A1/fr
Application granted granted Critical
Publication of EP2930374B1 publication Critical patent/EP2930374B1/fr
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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
    • F15B1/02—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
    • 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
    • F15B1/12—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery
    • F15B1/14—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery by means of a rigid annular supporting member
    • 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
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3156—Accumulator separating means having flexible separating means characterised by their attachment
    • 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
    • F15B2201/60—Assembling or methods for making accumulators
    • F15B2201/605—Assembling or methods for making housings therefor

Definitions

  • the invention relates to storage devices, in particular in the form of hydraulic accumulators, each with a storage housing consisting of at least two housing parts, at least partially delimiting a working space in the storage enclosure, in which a separating device movably guided two media spaces separated from each other and by means of a holding device in the storage enclosure to a predetermined Fixing point is held stationary.
  • the invention further relates to a mounting method for producing such memory devices.
  • Hydraulic accumulators are used, among other things, in hydraulic systems to take up certain volumes of pressurized fluids and to return these to the system as required.
  • Particularly common are hydraulic systems with hydropneumatic storage with a separator designed as a membrane.
  • the membrane separates a liquid space as a working space from a gas space as a further working space.
  • the membrane takes over the decoupling of gas and liquid space. Nitrogen is preferably used as the working gas.
  • the liquid space communicates with a hydraulic circuit of the plant, so that when rising the pressure in the hydraulic circuit of the hydraulic accumulator receives pressure medium and the gas is compressed. With decreasing pressure, the previously compressed gas expands again, displacing the liquid back into the hydraulic circuit.
  • a solution for fixing a separator in a storage enclosure goes from the DE 10 2009 021 463 A1 out.
  • the separator is cup-shaped and has at its outer edge on a torus.
  • the annular bead is held between housing parts in respective groove-shaped recesses.
  • the preparation of such a separator with a torus requires additional steps. Since such storage devices are devices that are manufactured in large quantities, the aspects of manufacturability and production costs must be considered in the design. Therefore, the aim is to further simplify the production and in particular to dispense with an annular bead on the separator.
  • the separator is also designed shell-shaped and also has a constant wall thickness in the region of an upper end edge.
  • this hydraulic accumulator engages the upper end edge of the separator in a bead-shaped, the edge of the separator annularly enclosing connecting part.
  • the connecting part is in turn fixed by a clamping ring in the housing.
  • the invention is therefore based on the cited prior art, the task of demonstrating improved memory devices, which do not have the disadvantages of the prior art and in particular faster and cheaper to produce. Furthermore, a method for producing such memory devices is to be shown.
  • the holding device applies the separator in a constant or substantially constant wall thickness in the region of the fixing point with a defined contact force on at least one of the housing parts in a touching manner.
  • the solution according to the invention has the advantage that the holding device and the separating device can be manufactured separately and arranged on the respective housing parts and installed together only during assembly.
  • the holding device permanently secures the separating device in a sealing manner in the storage device.
  • the term "in a touching manner" in this context means that the separating device rests directly or directly on the respective housing part, without providing further parts or elements between the separating device and the housing part are. Consequently, the storage device is simpler and faster overall and therefore less expensive to produce.
  • a further solution of the problem is according to the characterizing part of claim 2 is that the holding means by means of a separate, different from the housing parts Anpressteils the separator at least partially in the region of the fixing point with a defined contact force against at least one of the housing parts in a touching manner.
  • This solution has the advantage that the separator is held non-positively or clampingly on a housing part. Again, there is no need for further measures to ensure the necessary strength of the connection and the tightness. Another advantage of this solution is that the assembly is also easy and time-saving possible.
  • the adjacently arranged housing parts preferably overlap one another with their respective free opening areas and the holding device is accommodated in this overlapping area. Due to the overlapping arrangement, the holding device can act between the housing parts, wherein the compression of the housing parts can be advantageously used to generate the necessary holding force for the separator or the necessary contact pressure for the pressing.
  • the holding device is provided in a region of the maximum wall thickness of the storage device, so that sufficient space is available to arrange the holding device in this area in recesses of the housing parts.
  • the holding device may be at least partially received in a groove-like groove of the one housing part and in a pre-assembly with a predetermined projection in a resilient elastic manner with the separator at the fixing point in conjunction.
  • the separating device and / or the holding device are made of elastomeric materials, wherein the elasticity of the separating device may deviate from the elasticity of the holding device.
  • the projecting in the mounting position supernatant can advantageously result in a flush termination between the holding device and at least one of the housing parts, so that insofar a kind of self-centering of the parts to be joined is created.
  • the holding device holds the separator at the fixing point in the storage housing preferably free of adhesive. As a result, no additional adhesion promoter must be provided and the time required for the application of the adhesive can be omitted.
  • the separating device is received in the region of its free opening edge in a groove-like depression of one of the housing parts, the recording length is shorter than the other recording length of the groove in the other housing part, the recess and the groove otherwise congruent adjacent opposite in the adjacent housing parts in the overlap region are arranged.
  • an additional form-fitting component which contributes to a secure attachment of the separating element in the storage housing.
  • the larger dimensioned receiving length of the throat advantageously creates in the same a compensation space into which the holding device, in particular in the assembled state of the storage housing, can escape. To this In this way, an unnecessary crushing or shearing stress of the holding device is avoided and, as a result of the axial lengthening of the holding device, an enlarged fastening and sealing area for the separating device results.
  • the separator is set very safe and good sealing in the storage enclosure.
  • the independent Anpressteil the holding device is annular and preferably has at least at the point of the outlet of the wall of the separator from the groove-like depression of a housing part a cross-sectional change in such a way that the wall of the separator formed of elastically resilient material, the recess without significant change in wall thickness leaves.
  • the contact pressure is exerted particularly uniformly on the separator.
  • the mounting method for producing a memory device is characterized in that a free end region of a separating device is inserted into a shell-shaped housing part with a groove-like depression, that a pressing part of the holding device is inserted into a further shell-shaped housing part with a groove with a predeterminable, resiliently resilient projection, which is restored during the collapse of the housing part shells to form the storage enclosure of the housing wall of a housing part and thus exerts the required contact pressure on the separator to be determined at the fixing point in the storage housing with its restoring force in the final final assembly state.
  • the pertinent manufacturing or assembly process can be carried out reliably even with large quantities.
  • the single FIGURE shows a longitudinal section of a storage device 1 according to the invention, in particular in the form of a hydraulic accumulator, with a storage housing 3 consisting of two housing parts 5, 7 defining a working space 9 in the storage housing 3, in which a separating device 11 movably guided two media spaces 13th , 15, namely in the form of a gas space 13 and a liquid space 15, separated from each other and held stationary by means of a holding device 17 in the storage enclosure 3 at a predetermined fixing point 19.
  • the housing parts 5, 7 are shell-shaped and rotationally symmetrical to a longitudinal axis LA.
  • the housing parts 5, 7 are preferably made of an aluminum alloy in one operation in the context of a conventional Pressumform compilers.
  • a media inlet 21 is integrally formed.
  • the media inlet 21 comprises a tubular connecting piece 23 which is provided with an external thread 25.
  • the upper housing part 7 has a connection body 27 with an opening 28, through which a working gas, in particular nitrogen, can be introduced into the storage housing 1 in the usual way.
  • the opening 28 is closed by a closure part 29, which is preferably welded to the other housing parts.
  • a cover 31 surrounding the closure part 31 is provided.
  • the cover 31 is positively fixed to the upper housing part 7, for example by means of a welded joint, and may have outer peripheral side surfaces, for example in the form of a hexagon for fixing the memory to third components of a hydraulic system, not shown, by means of a fixing tool, not shown, such as a fork wrench or the like.
  • a free opening edge 33 of the lower housing part 5 is overlapped in an opening region 35 with its inner side 37 an opening portion 39 of the upper housing part 7 along its outer periphery 41, which is approximately half the height of the storage housing 1 in the assembled state shown.
  • the lower housing part 5 in this case has a reduced in its wall thickness longitudinal edge 43 which extends circumferentially along an associated bearing surface 45 of the upper housing part 7 under the same.
  • the upper housing part 7 is provided with an outwardly projecting shoulder 51, so that in the assembled state, the housing parts 5, 7 come into contact with each other at the respective stops 47, 51. Subsequently, the longitudinal edge 43 is crimped in a conventional manner to connect the housing parts 5, 7 permanently and tightly together.
  • the separator 11 is provided between the housing parts 5, 7, the separator 11 is provided.
  • the separating device 11 is at a constant or substantially constant wall thickness in the region of the fixing point 19 with a defined contact pressure on the lower housing part 5 in a touching manner, d. H. directly to.
  • the holding device 17 sets by means of a separate, different from the housing parts 5, 7 pressing part 53, the separator 11 in the region of the fixing point 19 with a defined contact pressure on the lower housing part 5 in a touching manner.
  • the holding device 17 which is substantially rectangular in cross-section, is received in the groove area 55 in a groove-like groove 55 and is connected in a pre-assembly position with a predeterminable projection in a spring-resilient manner to the separating device 11 at the fixing point 19.
  • the supernatant recovers the contact pressure on the separating device 11 in the region of the fixing point 19.
  • the supernatant recovered in the mounting position results in a flush closure of the holding device 17 with the upper housing part 7.
  • the holding device 17 holds the separating device 11 at the fixing point 19 in the storage housing 1 free of adhesive.
  • the separator 11 is added in the region of its free opening edge 59 in a groove-like recess 61 of the lower housing part 5, whose length LV is shorter than the length LK of the Kehlung 55 in the upper housing part 7. It is in an embodiment not shown but also possible LK equals LV. Otherwise, the groove 55 and the depression 61 are arranged congruently adjacent to one another in an overlapping region 54 of the adjacent housing parts 5, 7. The larger sized receiving length LK of the groove 55 creates in the same a compensation chamber 63, in which the holding device 17, in particular in the assembled state of the storage case 1, can escape.
  • the independent Anpressteil 53 of the holding device 17 is annular and has at least at the point of the outlet 65 of the wall 67 of the separator 11 from the groove-like recess 61 of the lower housing part 5, a cross-sectional change in such a way that the wall formed of elastically resilient material material 67 of the separator 11 can leave the recess 61 without significant change in wall thickness.
  • the change in cross section is formed by a shoulder 69 in Anpressteil 53, the edges are rounded.
  • the housing parts 5, 7 can be completely dispensed with the groove-like recess 61, so that the opening edge 59 of the separation membrane 11 can invest in a sealingly extending at the top just housing wall of the lower membrane shell 5 ,
  • the separator 11 is formed in the manner of a shell 71 made of elastically yielding material in the manner of a membrane.
  • the shell 71 passes during operation of the storage device 1 in at least one lifted, the media inlet 21 of the storage enclosure 1 releasing state of motion, the transversely to the fixing point 19, the separator takes a course in which they are against a ubenfuß 73 in the upper housing part 7, the Kehlung 55 limited, can support 19 by relieving the fixing point.
  • a disc-shaped valve body 75 is provided, which is arranged on the outside of the separating device 11 or cast or knotted into the separating device 11 can be.
  • the memory device 1 according to the invention can be produced particularly easily and quickly.
  • the cup-shaped lower housing part 5 with a groove-like recess 61 of the free end portion 59 of the separator 11 is inserted.
  • a Anpressteil 53 of the holding device 17 is inserted with a predetermined, resilient elastic supernatant. The supernatant is reset when moving the housing part shells 5, 7 with the formation of the storage enclosure 1 of the housing wall 77 of the upper housing part 7 and exercises in such a way with its restoring force in the final final assembly state, the required contact pressure on the separator to be determined 11 at the fixing point 19 in the storage enclosure 1.
  • the solution according to the invention has the advantage that the holding device 17 and the separating device 11 can be manufactured separately and arranged on the respective housing parts 5, 7 and installed together only during assembly.
  • the holding device 17 is used to set the separator 11 in a sealing manner in the storage device 1. Characterized in that the separator 11 rests against one of the housing parts 5, 7, there is no need for additional parts to ensure the seal. Consequently, the storage device 1 is generally simpler and faster and thus cheaper to produce and due to the determination of the separator according to the invention long-lasting and reliable use.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Ink Jet (AREA)
EP15000660.9A 2014-04-12 2015-03-06 Dispositifs de stockage et procédé de montage destiné à fabriquer de tels dispositifs de stockage Active EP2930374B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014005511.6A DE102014005511A1 (de) 2014-04-12 2014-04-12 Speichereinrichtungen und Montageverfahren zum Herstellen von solchen Speichereinrichtungen

Publications (2)

Publication Number Publication Date
EP2930374A1 true EP2930374A1 (fr) 2015-10-14
EP2930374B1 EP2930374B1 (fr) 2017-02-22

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EP15000660.9A Active EP2930374B1 (fr) 2014-04-12 2015-03-06 Dispositifs de stockage et procédé de montage destiné à fabriquer de tels dispositifs de stockage

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EP (1) EP2930374B1 (fr)
DE (1) DE102014005511A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3597932A4 (fr) * 2017-03-13 2020-03-11 NHK Spring Co., Ltd. Accumulateur
CN114101960A (zh) * 2021-12-18 2022-03-01 浙江奥莱尔液压有限公司 一种蓄能器及其生产工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2092208A5 (fr) * 1970-04-22 1971-01-21 Joha Nv Tech Hande
DE2623950A1 (de) * 1976-05-28 1977-12-01 Integral Hydraulik Langen & Co Hydro-pneumatischer druckspeicher
DE10355435B3 (de) 2003-11-27 2005-05-19 Hydac Technology Gmbh Hydrospeicher
DE102007003724A1 (de) * 2007-01-25 2008-07-31 Hydac Technology Gmbh Druckbehälter, insbesondere Hydrospeicher
DE102009021463A1 (de) 2009-05-15 2010-11-18 Hydac Technology Gmbh Hydrospeicher

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10116235A1 (de) * 2001-03-31 2002-10-17 Hydac Technology Gmbh Hydropneumatischer Druckspeicher

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2092208A5 (fr) * 1970-04-22 1971-01-21 Joha Nv Tech Hande
DE2623950A1 (de) * 1976-05-28 1977-12-01 Integral Hydraulik Langen & Co Hydro-pneumatischer druckspeicher
DE10355435B3 (de) 2003-11-27 2005-05-19 Hydac Technology Gmbh Hydrospeicher
DE102007003724A1 (de) * 2007-01-25 2008-07-31 Hydac Technology Gmbh Druckbehälter, insbesondere Hydrospeicher
DE102009021463A1 (de) 2009-05-15 2010-11-18 Hydac Technology Gmbh Hydrospeicher

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3597932A4 (fr) * 2017-03-13 2020-03-11 NHK Spring Co., Ltd. Accumulateur
US11174880B2 (en) 2017-03-13 2021-11-16 Nhk Spring Co., Ltd. Accumulator
CN114101960A (zh) * 2021-12-18 2022-03-01 浙江奥莱尔液压有限公司 一种蓄能器及其生产工艺
CN114101960B (zh) * 2021-12-18 2022-07-22 浙江奥莱尔液压有限公司 一种蓄能器及其生产工艺

Also Published As

Publication number Publication date
EP2930374B1 (fr) 2017-02-22
DE102014005511A1 (de) 2015-10-15

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