EP1384900A1 - Accumulateur hydraulique - Google Patents

Accumulateur hydraulique Download PDF

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Publication number
EP1384900A1
EP1384900A1 EP03014328A EP03014328A EP1384900A1 EP 1384900 A1 EP1384900 A1 EP 1384900A1 EP 03014328 A EP03014328 A EP 03014328A EP 03014328 A EP03014328 A EP 03014328A EP 1384900 A1 EP1384900 A1 EP 1384900A1
Authority
EP
European Patent Office
Prior art keywords
housing
gas
hydraulic accumulator
housing part
storage
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
EP03014328A
Other languages
German (de)
English (en)
Other versions
EP1384900B1 (fr
Inventor
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 EP1384900A1 publication Critical patent/EP1384900A1/fr
Application granted granted Critical
Publication of EP1384900B1 publication Critical patent/EP1384900B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B1/16—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means in the form of a tube
    • F15B1/165—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means in the form of a tube in the form of a bladder
    • 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
    • F15B2201/20—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
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3152—Accumulator separating means having flexible separating means the flexible separating means being bladders
    • 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
    • F15B2201/41—Liquid ports
    • F15B2201/411—Liquid ports having valve means
    • 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
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/43—Anti-extrusion means
    • F15B2201/435—Anti-extrusion means being fixed to the separating means
    • 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

Definitions

  • the invention relates to a hydraulic accumulator, in particular diaphragm accumulator, with a storage enclosure consisting of at least one or several, in particular two housing parts and a therein Separating element, in particular in the form of a separation membrane, the storage enclosure divided into a gas space and a fluid space, wherein the Gas space with a Gasnachhell adopted via a connecting device Gas leading is connected.
  • Hydraulic accumulators of the type mentioned are preferred in hydrosystems used, inter alia, for energy storage, for an emergency operation of hydraulic systems, shock absorption etc.
  • the hydraulic accumulators are by definition considered to be pressure vessels by Depending on the intended use, a specific useful volume can be stored.
  • hydraulic accumulators are distinguished by a separating element in bladder accumulator, diaphragm accumulator and piston accumulator, wherein the Mode of action based on the fact that the compressibility of a working gas is used for fluid storage. As a rule, nitrogen is used as Working gas.
  • the partition divides the hydropneumatic accumulators in a gas part and in a liquid part, the latter with the hydraulic Circulation is connected, so that when the Drukkes increase compressed on the fluid side, the gas on the gas side in the gas space and, accordingly, at a pressure drop on the fluid side, the compressed gas expand and the stored fluid in the memory again thereby push back into the hydraulic circuit.
  • the gas volume is due to the addition of the volume of the gas Gas space in the store and the gas space in the pressure accumulator adds, so that partial gas losses due to diffusion across the separation membrane the total volume of stored working gas and withdraw the service life of the hydro bubble reservoir can be designed accordingly extend.
  • the above bladder accumulator with permanently connected Gas refilling device is characterized in that the separating membrane is designed in the manner of a gas bubble and the filling of said bubble takes place through the gas valve located at the upper part of the hydraulic accumulator, that as part of the connecting device open to the piping and thus connected to the gas refilling device.
  • the invention has the object based, the previously described and known hydro storage solution to further improve such that a corresponding gas refill also can be used for diaphragm accumulator with the proviso of a cost-effective and functionally reliable solution that requires little installation space and cheap in the manufacture, installation and maintenance is.
  • a task solves a hydraulic accumulator with the features of claim 1 in his Entirety.
  • the gas refilling device from at least one further housing part is formed with the memory housing to form a structural unit is connected, and that the connecting means of at least one Connection opening in the storage enclosure, which is the interior of the other Housing part connects to the gas space, is the Gasnachvousll featured in the form of a further housing part of the memory on the actual Storage housing with the gas space and the fluid space and placed over the immediately existing connection device between the gas space the storage housing and the interior of the further housing part, with its internal volume also the intake of the working gas serves, the known piping is avoided, which costs and installation space saves for the total solution of the thus supplemented hydraulic accumulator.
  • the further housing part comprises the one housing part of the storage housing Outside circumference, which limits the gas space of the memory.
  • the other housing part, the limited at least the fluid space, at its free, the one housing part facing edge forms a paragraph on which the free end of the other Housing part can be placed.
  • Hydraulic accumulator are all three housing parts on their front side Ends via a common junction, preferably in Form a weld, interconnected, with the weld od also via a laser process. Like. Can be realized. That's how it works So with a single operation in a cost effective manner the overall assembly reach the hydraulic accumulator.
  • the separating element is made of an elastomeric material held by a fastening ring, which leaves the connection point on the inner peripheral side of the storage housing.
  • the one housing part which at least partially comprises the gas space, with a step-shaped shoulder at its free fastening edge cover the connection point inwards.
  • Hydraulic accumulator is the capacity of the other housing part about twice the storage volume of the storage enclosure on his gas side.
  • the pertinent embodiment with the above Volume ratios have become particularly important for diaphragm accumulators proved favorable and allows a significant extension of the service life of the memory through the attached nitrogen downstream. It is doing a surprising job for a person skilled in the field of hydraulic accumulators, that he doing the wall thickness of the other housing part, the Nitrogen Nachscnies serves, compared to the wall thickness of the other two Can reduce housing parts of the storage enclosure, in particular about can train as strong, without this leading to safety impairments for the memory leads.
  • the inventive Arrangement designed such that the free mobility of the membrane is restricted accordingly and not on the gas side of the other Memory housing can escape.
  • the separating element is provided with a stop member, with which the fluid connection of the storage housing is closable, it is ensured that at a complete emptying of the storage enclosure of fluid, the separating element not via the fluid port in the direction of Hydronikes can be sucked, causing damage to the membrane material would lead.
  • FIG. 1 shows a hydraulic accumulator in the direction of view on its left side in the form of a bubble store.
  • the pacemaker memory has a Storage housing 10, consisting of a contiguous housing part 12.
  • a separating element 14 is guided in Shape of a bubble made of a rubber-elastic material (elastomer).
  • the bubble is filled by the upper part of the storage housing 10 located gas connection part 16.
  • the seen in the direction of view at the bottom End of the hydraulic accumulator attached liquid valve 18 in the Art a poppet device prevents in the first place that the bubble during Outflow of the fluid is sucked out.
  • the provision of Valve device takes place in the usual way via a corresponding, not shown compression spring.
  • the separating element 14 divides the storage housing 10 in a gas space 20 and in a fluid space 22nd
  • the known memory On its upper side, the known memory is provided with an adapter 24, which establishes the connection between the gas space 20 via the gas connection part 16 to a designated as a whole with 26 piping in Shape of single pipe pieces.
  • the piping 26 opens with her a free end to the adapter and with its other free end a pressure vessel 28 as Gasnachhell arthritis.
  • the gas refilling facility in the present case consists of a further third housing part 34, the with the storage enclosure 10 to form a compact unit is connected, said connecting means of at least a connection opening 36 in the storage housing 10, which is the interior 38 of the other third housing part 34 with the gas space 20 of the hydraulic accumulator combines.
  • connection opening 36 shown can several, also smaller in diameter passage points in the assigned Housing part be present.
  • the further housing part comprises 34 the one housing part 12 of the storage housing 10 on the outer peripheral side, wherein the one housing part 12 in the initial state of the memory anyway the respective proportions of the gas space 20 limited, the pertinent Gas filling volume between the first housing part 12 and the top of the separating element 14 is enclosed.
  • the other housing part 32 which limits at least the fluid space 22, allows the inclusion of fluid connectable via the fluid port 40 Hydrocircle (not shown), as well as the volume of the gas space 20 may vary.
  • the separating element 14 between the inside of the second Housing part 32 and the corresponding inner side of the first housing part 12 move, and was between the connection point for the fluid connection 40 and the connection opening 36.
  • the other housing part 32 forms at its free, the one housing part facing edge of a paragraph 42, to which the respective free end of the second housing part 32 and the third housing part 34 can be placed. There Consequently, all housing parts 12, 32 and 34 with their facing each other Touching ends along a common edge line 44, can be over a common connection point 46, preferably in the form of a connecting weld (not shown), the assembly in the form of a Realize total hydraulic storage.
  • the separating element 14 in the form of Separation membrane is at its bead-like widened end in a mounting ring 48, with its free end face 50 in the direction of view 2 seen below the edge line 44.
  • the edge thus obtained can Cover joint 46 in the form of the weld inwards and such is avoided that any weld spatter od. Like. Inside could damage the sensitive separation membrane.
  • the one housing part 12 which at least partially comprises the gas space 20, with a stepped Paragraph 52 at its free attachment edge against the junction 46, so that the same protection described above is obtained.
  • about the thus obtained paragraph 52 is also an internal centering obtained for the first housing part 12, which is a touchdown and facilitates the assembly of the hydraulic accumulator.
  • the capacity of the other third housing part 34 is about twice as large as the storage volume of the storage enclosure 10 on its gas side 20.
  • the following calculation example results for the extension of the operating time by the nitrogen downstream.
  • the loss of gas over a predefinable time x may be 2 Nl.
  • the pressure loss due to the mentioned gas loss of 2Nl is then 4 bar after said period x.
  • the wall thickness of the other housing part 34 against the wall thickness of the other two housing parts 12,32 be substantially reduced, in particular about half as strong be like the housing walls of the storage enclosure 10.
  • the separator 14 itself is provided with a bottom-side stop member 54, However, what is customary for such hydraulic accumulators, so that at this Job will not be discussed in detail. Ultimately, that serves Stopper member 54 to pull out with emptied memory on the fluid side the elastic separating element 14 via the fluid port 40 to avoid what permanently damage the sensitive membrane material could. On the stop member 54 is rather a defined closing the fluid port 40 without the described disadvantage possible, so that the stop member 54 has a similar function as the already described poppet valve 18 in the initially described Bubble memory.
  • All housing parts 12,32,34 are in the range of their connection, ie in the area the junction 46, cylindrically shaped, wherein they at their End sides at least partially curved end sides 56 have what in particular within the storage enclosure 10 is so far favorable, as the separator 14 then gently in the maximum end positions lean against the housing parts of the storage enclosure 10 supporting can, without causing overstressing of the sensitive membrane material comes.
  • the memory according to the invention is characterized, as explained, by a prolonged service life, since gas losses by diffusion over the Separating membrane by the Gasnachocclleihraum in the form of the other Housing part 34 can be compensated.
  • the total memory which is complemented as a unit, can be found in the Implementation of a modular kit with standard components and with only three housing parts and a connection seam is the hydraulic accumulator created with his workspaces.

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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)
EP03014328A 2002-07-24 2003-06-26 Accumulateur hydraulique Expired - Lifetime EP1384900B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10233454A DE10233454A1 (de) 2002-07-24 2002-07-24 Hydrospeicher
DE10233454 2002-07-24

Publications (2)

Publication Number Publication Date
EP1384900A1 true EP1384900A1 (fr) 2004-01-28
EP1384900B1 EP1384900B1 (fr) 2005-12-14

Family

ID=29796528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03014328A Expired - Lifetime EP1384900B1 (fr) 2002-07-24 2003-06-26 Accumulateur hydraulique

Country Status (3)

Country Link
US (1) US6871671B2 (fr)
EP (1) EP1384900B1 (fr)
DE (2) DE10233454A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7493916B2 (en) * 2005-12-12 2009-02-24 Bosch Rexroth Corporation Pressure vessel with accumulator isolation device
DE102011100532A1 (de) * 2011-05-05 2012-11-08 Hydac Technology Gmbh Medientrennvorrichtung, insbesondere Hydrospeicher einschließlich zugehöriger Messeinrichtung und Messverfahren
DE102011113028B4 (de) * 2011-09-10 2019-01-10 Winkelmann Sp. Z.O.O. Membrandruckausdehnungsgefäß
US9751689B2 (en) 2013-09-24 2017-09-05 Pentair Residential Filtration, Llc Pressure vessel system and method
US9915433B2 (en) 2014-05-30 2018-03-13 Amtrol Licensing Inc. Moisture detecting air cap indicator for expansion tank failure
USD797169S1 (en) * 2015-08-08 2017-09-12 Abduz Zahid Pulsation dampener bladder
US10012244B2 (en) * 2016-07-13 2018-07-03 Dale Maney Hydraulic hose end expansion chamber

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1108551A (en) * 1964-05-26 1968-04-03 Power Aux Ies Ltd Improvements in or relating to pressure accumulators for hydraulic liquid
DE2817011A1 (de) * 1978-04-19 1979-10-25 Bosch Gmbh Robert Druckbehaelter
WO1995016549A1 (fr) * 1993-12-17 1995-06-22 Leppaenen Jarmo Uolevi Accumulateur hydraulique

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3033552A (en) * 1958-12-24 1962-05-08 Ralph P Ogden Hydro-pneumatic spring unit
US3165229A (en) * 1962-09-12 1965-01-12 Gen Fittings Company Expansion tank
US3524475A (en) * 1968-01-10 1970-08-18 American Tube & Controls Inc Expansion tank
US4305428A (en) * 1979-12-31 1981-12-15 Hydril Company Surge absorber
FR2515761A1 (fr) * 1981-10-30 1983-05-06 Milton Roy Dosapro Amortisseur hydropneumatique
US4474215A (en) * 1983-05-19 1984-10-02 A.O. Smith Corporation Pressure vessel with improved diaphragm mounting
US5176178A (en) * 1991-02-20 1993-01-05 Aos Holding Company Accumulator with randomly uniplanar bladder collapse
US5386925A (en) * 1993-06-21 1995-02-07 Amtrol Inc. Expansion tank

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1108551A (en) * 1964-05-26 1968-04-03 Power Aux Ies Ltd Improvements in or relating to pressure accumulators for hydraulic liquid
DE2817011A1 (de) * 1978-04-19 1979-10-25 Bosch Gmbh Robert Druckbehaelter
WO1995016549A1 (fr) * 1993-12-17 1995-06-22 Leppaenen Jarmo Uolevi Accumulateur hydraulique

Also Published As

Publication number Publication date
DE10233454A1 (de) 2004-02-12
US6871671B2 (en) 2005-03-29
DE50301903D1 (de) 2006-01-19
US20040123912A1 (en) 2004-07-01
EP1384900B1 (fr) 2005-12-14

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