EP1735537B1 - Accumulateur hydraulique - Google Patents

Accumulateur hydraulique Download PDF

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Publication number
EP1735537B1
EP1735537B1 EP05715853A EP05715853A EP1735537B1 EP 1735537 B1 EP1735537 B1 EP 1735537B1 EP 05715853 A EP05715853 A EP 05715853A EP 05715853 A EP05715853 A EP 05715853A EP 1735537 B1 EP1735537 B1 EP 1735537B1
Authority
EP
European Patent Office
Prior art keywords
pipe
plate
store according
forming
hydro
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP05715853A
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German (de)
English (en)
Other versions
EP1735537A1 (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 EP1735537A1 publication Critical patent/EP1735537A1/fr
Application granted granted Critical
Publication of EP1735537B1 publication Critical patent/EP1735537B1/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
    • F15B1/106—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
    • F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
    • 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
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F15B2201/312—Sealings therefor, e.g. piston rings
    • 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

Definitions

  • the invention relates to a hydraulic accumulator with a storage housing in the form of a tube according to the feature configuration of the preamble of claim 1.
  • hydraulic accumulators A variety of different hydraulic accumulators is commercially available and used in hydro plants for various applications. They are used inter alia for energy storage, emergency operation, to balance forces, for damping of pressure surges, for pulsation damping, for vehicle suspension, recovery of braking energy and the like. Due to the variety of applications, which have a need for hydraulic accumulators in large quantities result, a construction method should be sought, which allows a simple and cost-effective production of hydraulic accumulators with safe operation.
  • a generic hydraulic accumulator with a storage housing in the form of a tube in which a separable in the axial direction separating element, preferably a separating piston, on both sides adjacent pressure chambers from each other, and wherein the tube is closed at at least one end by a cover-like closure member, the one contact surface for the connection with the relevant Having end edge of the tube, wherein the contact surface has a surface part in the form of an axially projecting into the interior of the tube ring surface for positive support of the pipe wall against radial forces and an extension in the radial direction having annular surface for positive .Abstützung the pipe wall against axial forces.
  • a comparable to this generic solution is also by the DE 71 13 311 U known.
  • the invention is therefore an object of the invention to provide a hydraulic accumulator available, while maintaining the advantages of the prior art, such as low material costs in lightweight construction with correspondingly low production costs and manufacturing technology easy to manufacture, to further improve that this is a particularly safe, long-lasting operating characteristics.
  • This object is achieved by a hydraulic accumulator with the features of claim 1 in its entirety.
  • the closing part is formed by a plate having a deformation in the form of an annular bead which projects into the interior of the tube and provided on the radially outer edge of its projecting convexity with the annular surface forming the contact surface is, such a wave-shaped configuration is achieved at least for a portion of the plate, which is simple and efficient to produce, for example, by cold working, that there is a very favorable course of power flow in the introduction of forces between the pipe wall and plate at the respective junction act, so that the inventive solution is characterized in particular by a very safe performance.
  • a particularly favorable material utilization results in embodiments in which the annular bead of the plate is bulged by cold extrusion from the plane of the plate. While in this case the material thickness of the plate is slightly reduced due to the stretch in the bulge, the material thickness of the plate remains unchanged in adjacent to the bulge on both flat areas, so that advantageously the full thickness of material in areas of the plate is available, in which the plate has through holes.
  • This may be, for example, a connection opening located in the center of the plate as access to the adjacent pressure space or around fastening holes, which are provided in lateral extensions of the plate, forming the flange parts.
  • the hydraulic accumulator according to the invention is further provided to arrange a formation of a curved, protruding dome in the center of the end portion of the storage housing, which leads to a stiffening of the end part.
  • the risk of dimensional stability by stretching and tension is thereby reduced, so that the conditions for a lightweight construction of the hydraulic accumulator are given, which leads to the desired reduction in material costs and thus the overall manufacturing costs.
  • a cylindrical metal tube forming the main part of the accumulator housing is designated by 1.
  • the tube 1 is closed by an integral with the tube shell end portion 3. This is formed by hot forming of the relevant end portion of the tube 1, for example by a known as rolling forming technology.
  • a dekkelmaschines final part which is a plate 5 in the present example.
  • a piston 9 with respect to a housing longitudinal axis 7 is displaceable, which is sealed at its periphery by sealing elements 11 relative to the housing inner wall.
  • the piston 9 forms a movable separating element between both sides adjacent pressure chambers 13 and 15.
  • the hydraulic accumulator As in the embodiment shown, is designed as a hydropneumatic storage and the pressure chamber 13 is provided for receiving a pressurized gas filling, the piston 9 has a concentric to the axis 7, inner trough 17.
  • An end portion 3 of the housing centrally located compressed gas connection with an opening 18 which is closed by means of a closure member 19, allows the filling of the pressure chamber 13 with a corresponding pressurized gas, namely nitrogen gas for hydropneumatic applications.
  • a connection opening 21st For the fluid connection to the pressure chamber 15 is in the plate 5 concentric with the longitudinal axis 7, a connection opening 21st
  • the material thickness of the plate 5 is substantially greater than the wall thickness of the tube 1 and is in the illustrated embodiment more than twice this wall thickness.
  • the plate 5 is deformed so that an area bulged out of the plane of the plate forms an annular bead 23 which is concentric with the longitudinal axis 7 and whose part projecting from the plane of the plate forms a rounded convexity 25.
  • the annular bead 23 forming bulge results in the plate 5 surrounded by the annular bead 23, inner planar region 27 and a radially outside of the annular bead 23 located flat area 29.
  • the bulge is formed so that the radius of curvature of the bulge at the transitions to the planar regions 27 and 29 is greater in each case than in the top of the annular bead 23 forming region.
  • the material thickness of the plate 5 remains unchanged in the annular bead 23 on both sides adjacent flat regions 27 and 29, while the material stretching only within half of the annular bead 23 results in a small decrease in material thickness.
  • the concentric to the longitudinal axis 7 connecting opening 21 is thus located in a region in which the material thickness is not diminished by the deformation of the plate, which proves advantageous for the attachment of connection fittings.
  • the plate 5 has extensions 31 which form parts of a flange for the attachment of the hydraulic accumulator, then the fact that the extensions 31 have them is level Area 29, the material thickness is unchanged, also of great advantage, because so at the mounting holes 33 of the flange of the full material cross section is available.
  • FIG. 2 how most obvious Fig. 2 can be removed, the connection between the end edge of the tube 1 and the plate 5 at a contact surface of the plate 5, which is located on the radially outer edge 35 of the convexity 25 of the annular bead 23, so that the summit 37 into the interior of the tube 1 into it projects.
  • the contact surface on the annular bead 23 two mutually approximately at right angles extending surface parts, namely an axially into the interior of the tube 1 projecting annular surface 39 and an extension in the radial direction annular surface 41.
  • Fig. 2 shows at the left in Fig. Connection point between the tube 1 and plate 5, a weld joint 43, which is formed as a preferred attachment to the transition region of the annular surfaces 39 and 41, which latter therefore on the in Fig. 2 left-side joint are not visible.
  • the inner wall of the tube 1 at the Endrand Scheme a wall thickness of the tube 1 to the end edge out in some areas reducing chamfer 45. This creates space for the projecting into the interior of the tube 1 edge portion at the summit 37 of the annular bead 23, over the summit of the pipe 1 is so to speak, with its end edge exposed.
  • Fig. 1 left conclusion of the storage enclosure formed by an end portion 3, which is formed as an integral part of the tube 1 from the wall by hot forming technique, a technique such as, for example, under the name "Rolling" is known.
  • the end part 3 is shaped in such a way that a slightly protruding dome 4 with curved flanks 6 is formed in the central region surrounding the longitudinal axis 7.
  • Fig. 1 can be seen, form the flanks 6 on the outside of a concavity, to which a concentric to the longitudinal axis 7, substantially flat central part connects.
  • a filling opening 18 for filling the pressure chamber 13 with compressed gas, wherein at the opening 18, a closure body 19 is provided.
  • the curved shape of the dome 4 acts as a stiffening element on the end part 3, so that dimensional stability of the storage housing is achieved despite light construction.

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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)
  • Lubricants (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (12)

  1. Accumulateur hydraulique ayant une enveloppe d'accumulateur sous la forme d'un tuyau (1), dans lequel un élément de séparation mobile dans la direction (7) axiale du tuyau, de préférence un piston (19) de séparation, sépare l'un de l'autre les espaces (13, 15) sous pression qui en sont voisins des deux côtés, et dans lequel le tuyau (1) est fermé au moins à l'une de ses extrémités par une partie (7) de fermeture du type en couvercle qui a une surface de contact pour la liaison avec le bord d'extrémité concerné du tuyau (1), la surface de contact ayant une partie de surface sous la forme d'une surface (39) annulaire en saillie axialement à l'intérieur du tuyau (1) pour soutenir à complémentarité de forme la paroi du tuyau à l'encontre des forces radiales, ainsi qu'une surface (41) annulaire s'étendant dans la direction radiale pour soutenir à complémentarité de forme la paroi du tuyau à l'encontre de forces axiales, caractérisé en ce que la partie de fermeture est formée par une plaque (5) qui a une déformation sous la forme d'un bourrelet (23) annulaire qui fait saillie à l'intérieur du tuyau (1) et qui est muni sur le flanc (35) se trouvant radialement vers l'extérieur de sa convexité (25) en saillie des surfaces (39, 41) annulaires formant la surface de contact.
  2. Accumulateur hydraulique suivant la revendication 1, caractérisé en ce que le tuyau (1) est fermé à une extrémité par une partie (3) d'extrémité d'un seul tenant obtenue par déformation sous l'effet de la chaleur de la paroi du tuyau (1), et en ce que, sur la partie (3) d'extrémité concernée, est façonné un dôme (4) courbé, voisin de l'axe (7) longitudinal du tuyau (1) formant une partie concentrique à celui-ci pour la formation d'une surélévation de la partie (3) d'extrémité.
  3. Accumulateur hydraulique suivant la revendication 1 ou 2, caractérisé en ce que la paroi du tuyau (1) a, sur la partie voisine du bord d'extrémité sur la face intérieure, un biseau (45), de sorte que l'épaisseur de paroi du tuyau (1) au bord d'extrémité diminue localement, au moins dans la partie qui entoure le sommet (37) du bourrelet (23) annulaire.
  4. Accumulateur hydraulique suivant l'une des revendications 1 à 3, caractérisé en ce que le bourrelet (23) annulaire est formé par formage à froid sur la plaque (5) formant la partie de fermeture.
  5. Accumulateur hydraulique suivant l'une des revendications 1 à 4, caractérisé en ce que la plaque (5) formant la partie de fermeture est reliée au tuyau (1) par un joint soudé (43) formé sur la surface d'appui.
  6. Accumulateur hydraulique suivant l'une des revendications 1 à 5, caractérisé en ce que la plaque (5) a, au moins par endroits, des élargissements (31) en saillie radialement sur le pourtour du tuyau (1) qui forme au moins des parties d'une bride de fixation ayant des trous (33) de fixation.
  7. Accumulateur hydraulique suivant la revendication 6, caractérisé en ce qu'il est prévu des élargissements (31) disposés à des intervalles angulaires réguliers les uns des autres pour former au moins deux, de préférence trois parties de bride.
  8. Accumulateur hydraulique suivant l'une des revendications 4 à 7, caractérisé en ce que le bourrelet (23) annulaire de la plaque (5) est courbé par matriçage à froid hors du plan de la plaque (5), en ce que l'épaisseur du matériau de la plaque (5) dans les parties (27, 29) planes voisines respectivement des deux côtés du bourrelet (23) annulaire est plus grande que dans la partie courbée.
  9. Accumulateur hydraulique suivant la revendication 8, caractérisé en ce qu'il est prévu une ouverture (21) de raccord au centre de la plaque (5) ayant la pleine épaisseur du matériau.
  10. Accumulateur hydraulique suivant la revendication 8 ou 9, caractérisé en ce que le rayon de courbure de la courbure aux transitions avec les parties (27, 29) planes de la plaque (5) est plus grand que dans la partie formant le sommet (37) du bourrelet (23) annulaire.
  11. Accumulateur hydraulique suivant l'une des revendications 1 à 10, caractérisé en ce que les flancs (6) en saillie de la partie (3) d'extrémité du dôme (4) ont une forme concave du côté extérieur.
  12. Accumulateur hydraulique suivant la revendication 11, caractérisé en ce que le dôme (4) a une ouverture (18) de remplissage concentrique à l'axe (7) longitudinal du tuyau (1).
EP05715853A 2004-04-16 2005-03-09 Accumulateur hydraulique Expired - Lifetime EP1735537B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004018456A DE102004018456A1 (de) 2004-04-16 2004-04-16 Hydrospeicher
PCT/EP2005/002458 WO2005106255A1 (fr) 2004-04-16 2005-03-09 Accumulateur hydraulique

Publications (2)

Publication Number Publication Date
EP1735537A1 EP1735537A1 (fr) 2006-12-27
EP1735537B1 true EP1735537B1 (fr) 2008-05-14

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EP05715853A Expired - Lifetime EP1735537B1 (fr) 2004-04-16 2005-03-09 Accumulateur hydraulique

Country Status (5)

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US (1) US20070181199A1 (fr)
EP (1) EP1735537B1 (fr)
AT (1) ATE395517T1 (fr)
DE (2) DE102004018456A1 (fr)
WO (1) WO2005106255A1 (fr)

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US20100307156A1 (en) 2009-06-04 2010-12-09 Bollinger Benjamin R Systems and Methods for Improving Drivetrain Efficiency for Compressed Gas Energy Storage and Recovery Systems
US8479505B2 (en) 2008-04-09 2013-07-09 Sustainx, Inc. Systems and methods for reducing dead volume in compressed-gas energy storage systems
US8474255B2 (en) 2008-04-09 2013-07-02 Sustainx, Inc. Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange
US8225606B2 (en) 2008-04-09 2012-07-24 Sustainx, Inc. Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression
US8250863B2 (en) 2008-04-09 2012-08-28 Sustainx, Inc. Heat exchange with compressed gas in energy-storage systems
US8359856B2 (en) 2008-04-09 2013-01-29 Sustainx Inc. Systems and methods for efficient pumping of high-pressure fluids for energy storage and recovery
US8448433B2 (en) 2008-04-09 2013-05-28 Sustainx, Inc. Systems and methods for energy storage and recovery using gas expansion and compression
US7958731B2 (en) 2009-01-20 2011-06-14 Sustainx, Inc. Systems and methods for combined thermal and compressed gas energy conversion systems
US8240140B2 (en) 2008-04-09 2012-08-14 Sustainx, Inc. High-efficiency energy-conversion based on fluid expansion and compression
US8677744B2 (en) 2008-04-09 2014-03-25 SustaioX, Inc. Fluid circulation in energy storage and recovery systems
US8037678B2 (en) 2009-09-11 2011-10-18 Sustainx, Inc. Energy storage and generation systems and methods using coupled cylinder assemblies
EP2280841A2 (fr) 2008-04-09 2011-02-09 Sustainx, Inc. Systèmes et procédés de stockage et de récupération d'énergie à l aide de gaz comprimé
WO2009152141A2 (fr) 2008-06-09 2009-12-17 Sustainx, Inc. Système et procédé pour la détente et la compression isotherme rapide de gaz pour le stockage d'énergie
DE102008061221A1 (de) * 2008-12-09 2010-06-10 Hydac Technology Gmbh Hydrospeicher, insbesondere Balgspeicher
US7963110B2 (en) 2009-03-12 2011-06-21 Sustainx, Inc. Systems and methods for improving drivetrain efficiency for compressed gas energy storage
US8104274B2 (en) 2009-06-04 2012-01-31 Sustainx, Inc. Increased power in compressed-gas energy storage and recovery
WO2011056855A1 (fr) 2009-11-03 2011-05-12 Sustainx, Inc. Systèmes et procédés de stockage d'énergie produite par un gaz comprimé au moyen d'ensembles vérins couplés
US8171728B2 (en) 2010-04-08 2012-05-08 Sustainx, Inc. High-efficiency liquid heat exchange in compressed-gas energy storage systems
US8191362B2 (en) 2010-04-08 2012-06-05 Sustainx, Inc. Systems and methods for reducing dead volume in compressed-gas energy storage systems
US8234863B2 (en) 2010-05-14 2012-08-07 Sustainx, Inc. Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange
US8495872B2 (en) 2010-08-20 2013-07-30 Sustainx, Inc. Energy storage and recovery utilizing low-pressure thermal conditioning for heat exchange with high-pressure gas
US8578708B2 (en) 2010-11-30 2013-11-12 Sustainx, Inc. Fluid-flow control in energy storage and recovery systems
JP2014522460A (ja) 2011-05-17 2014-09-04 サステインエックス， インコーポレイテッド 圧縮空気エネルギー貯蔵システムにおける効率的二相熱移送のためのシステムおよび方法
US20130091836A1 (en) 2011-10-14 2013-04-18 Sustainx, Inc. Dead-volume management in compressed-gas energy storage and recovery systems
ITBO20120085A1 (it) * 2012-02-22 2013-08-23 Magneti Marelli Spa Servocomando idraulico di un cambio servocomandato
ITBO20120084A1 (it) * 2012-02-22 2013-08-23 Magneti Marelli Spa Servocomando idraulico di un cambio servocomandato

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Also Published As

Publication number Publication date
DE102004018456A1 (de) 2005-11-10
US20070181199A1 (en) 2007-08-09
ATE395517T1 (de) 2008-05-15
EP1735537A1 (fr) 2006-12-27
DE502005004121D1 (de) 2008-06-26
WO2005106255A1 (fr) 2005-11-10

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