EP1327081B1 - Accumulateur hydraulique, notamment accumulateur de type vessie - Google Patents

Accumulateur hydraulique, notamment accumulateur de type vessie Download PDF

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Publication number
EP1327081B1
EP1327081B1 EP01987851A EP01987851A EP1327081B1 EP 1327081 B1 EP1327081 B1 EP 1327081B1 EP 01987851 A EP01987851 A EP 01987851A EP 01987851 A EP01987851 A EP 01987851A EP 1327081 B1 EP1327081 B1 EP 1327081B1
Authority
EP
European Patent Office
Prior art keywords
bore
fluid
piston
store according
valve
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
EP01987851A
Other languages
German (de)
English (en)
Other versions
EP1327081A2 (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 EP1327081A2 publication Critical patent/EP1327081A2/fr
Application granted granted Critical
Publication of EP1327081B1 publication Critical patent/EP1327081B1/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
    • F15B1/22—Liquid port constructions
    • 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
    • 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
    • F15B2201/3152—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
    • F15B2201/40—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
    • F15B2201/43—Anti-extrusion means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7784—Responsive to change in rate of fluid flow
    • Y10T137/7792—Movable deflector or choke

Definitions

  • the invention relates to a hydraulic accumulator, in particular bladder accumulator with the features the preamble of claim 1.
  • Hydraulic accumulators of this type are commercially available.
  • a bladder memory of the above type shown and described In the known bladder accumulator is the valve assembly designed as a seat valve, wherein on the fluid space facing End edge of the connecting piece as a fixed valve seat a conical surface is formed, which with a corresponding conical surface on a Valve plate of the movable valve body cooperates.
  • This is similar designed as the usual in valve-controlled internal combustion engines Control valves, i. the valve disk is located on a shaft which is suitable for the between the open position and closed position extending valve lift is guided in a valve guide, which is installed in the connection piece is.
  • a generic hydraulic accumulator whose separating element is formed from a metal bellows. Within the bellows is a compression spring arranged, which is the separating element held in the prestressed state. On the bottom is the metal bellows provided with a closure plate which cooperates with a valve body, the spring-loaded in the fluid connection of the Housing of the known hydraulic accumulator is added.
  • the valve body is designed as a valve tappet and larger in its longitudinal orientation dimensioned as in the transverse direction, so that the known valve body in his Movement direction in the connecting piece takes up much space.
  • the with the end plate cooperating end of the valve body is dome-like trained, so that in connection with the different Diameters, grooves and punctures, bevelled surfaces and a Transverse bore at the other end of the valve body a complex geometry arises, which is a complex and costly machining process required in the production.
  • the complicated constructive geometric Structure of the closing body is also continued in the fluid guide and due to the multiple deflection of the fluid flow is in particular in the Area of inflow of the medium into the fluid space unfavorable Realized flow, so that the known solution for hydraulic accumulator with sensitive membrane bubbles proves to be unsuitable.
  • US-A-4,068,684 discloses a generic hydraulic accumulator, wherein in the known solution of the spring-loaded valve body as a sleeve-like Closure is formed, the height measured in the direction of movement of the valve body is sized several times greater than its Diameter.
  • the valve body is at his, the Separating element facing side formed as a flat plate and has in its sleeve-like outer shell diametrically opposite each other Cross holes on the fluid side of the hydraulic accumulator are fluidly connected in the open position of the valve.
  • the known valve body solution thus builds in the axial direction of the hydraulic accumulator very large and due to the fluid-carrying cross bores results in the area of the inflow of the medium into the fluid space non-throttling and thus unfavorable flow pattern.
  • the Invention the task of the known generic hydraulic accumulator further to improve so that the valve body takes up little space, that it is geometrically simple and therefore inexpensive to implement is, as well as an optimized flow path in the region of the inflow into the fluid space permits.
  • This task is solved by a hydraulic accumulator with the features of claim 1 in its entirety.
  • the diameter of the valve body is sized larger than its height measured in the direction of movement of the valve body and that the respective Transverse bore in the valve piston is designed as a fluid channel, the radial and at right angles to each other running continuously in the spool overlap on the longitudinal axis, on the one hand, the valve assembly built in the manner of a plate valve, which takes up little space and can be realized inexpensively and on the other hand allows the respective fluid channel, which is integrated into the interior of the valve body, a targeted control of the fluid flow and the fluid channels can from their number and cross-sectional size are chosen so that at Fluid passage gives a desired throttling, with the possibility during operation of the hydraulic accumulator depending on the intended use of the to specify optimal damping ratios for each.
  • valve assembly is designed in the manner of a slide valve and serving as a valve housing Connecting piece with its circular cylindrical inner surface the piston bore defined for the trained as a spool valve body.
  • the arrangement may be such that adjacent to the fluid space end edge of the piston bore of the Connecting piece the control edge for releasing and closing a or more fluid channels of the spool forms.
  • the spool piston leading to the piston preferably can its end portion adjacent to the fluid space has a tapered bore portion by which an annular shoulder surface is formed, in cooperation with a radially projecting on the spool Counter shoulder surface forms a stop on which the spool in the open position of the valve is applied.
  • FIG. 1 In the drawing of Fig. 1, only the fluid side of the pressure vessel 1 Access 3 adjacent section shown. Not shown, opposite End of the pressure vessel 1 is located in usually designed gas-side access to the interior of a only in Fig. 3 indicated memory bladder 5, which forms the movable separating element, which is the gas space 7 located in its interior from the fluid space 9 separates.
  • a fluid connecting piece 11 at the adjacent end of the fluid space. 9 welded into the wall of the pressure vessel 1.
  • the connection piece 11 is in the form of a circular cylindrical sleeve, in which at her free, outer end adjoining section an internal thread 13 for the Having connection of a fluid line, not shown.
  • an internal thread 13 for the Having connection of a fluid line, not shown.
  • adjacent end portion of the connecting piece 11 forms a piston bore 15, in which a spool 17 is slidably guided.
  • Connecting piece 11 thus forms the valve housing for a slide valve with serving as a movable valve body spool 17, the inner surface of the piston bore 15 of the connecting piece 11 directly for its movement along the longitudinal axis 19 of the piston bore 15th guided and between an open position shown in FIGS. 1 and 3 and a closed position shown in Fig. 2 is movable.
  • the spool 17 is by a helical compression spring 21 in the in Fig. 1 and 3 shown biased open position. He is from this position at a corresponding extent of the storage bubble 5, if this against the top 23 of the accumulator piston 17 presses, against the force of Compression spring 21 in the closed position shown in FIG. 2 displaceable.
  • the compression spring 21 is supported with its remote from the spool 17 End of a support plate 25 from the connecting piece 11 at a located at the adjacent end of the piston bore 15 located paragraph and in the embodiment of Fig. 1 by a locking ring 27th is held.
  • the support plate 25 is secured by a flat snap ring 29. Apart from this difference corresponds to the embodiment of Fig. 2 that of Fig. 1.
  • Compression spring 21 extends into an axial bore 31, which in the Spool 17, to the longitudinal axis 19 concentric, at the vom Fluid space 9 facing away from the end is formed and in the spool 17 in transverse bores 33 opens.
  • These cross holes are nearby the top 23 of the spool 17 radially and at right angles to each other, so that they overlap on the longitudinal axis 19.
  • These Transverse holes 33 form in the spool 17 fluid channels, with the Valve control edge cooperate and the over the Akialbohrung 31 of the Spool 17 and through holes 35 in the support plate 25th form the fluid access to the fluid space 9 when the slide valve in the open position shown in Fig. 1 and 3 is located.
  • the connecting piece 11 in the end edge 37 adjacent portion an external thread 43, which with a corresponding internal thread of the Wall of the pressure vessel 1 is screwed.
  • the wall thickness of the pressure vessel 1 is formed larger for this purpose in the threaded area.
  • the embodiment shown in Fig. 3 on the right side has a to the Pressure vessel 1 integrally formed by hot or cold forming connecting piece 11 and does not differ from the rest in the same figure on the left side shown example.
  • the invention is based on embodiments in the form described by bubble stores. It is understood, however, that the invention with advantage alike in Hydrospeichem other design, for example with membrane accumulators or Koiben appointmentn, is applicable.

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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)

Claims (12)

  1. Accumulateur hydraulique, en particulier accumulateur à bulles, avec un réservoir sous pression (1), un élément de séparation (5) disposé dans celui-ci qui sépare, dans le réservoir sous pression (1), un compartiment de gaz (7) adjacent à un accès du côté du gaz d'un compartiment de fluide (9) qui est adjacent à un accès du côté du fluide (3) qui comporte un ajutage pour fluide (11), et avec un dispositif de soupape placé sur l'ajutage (11) avec un corps de soupape (17) comportant au moins un forage transversal (33) qui est normalement précontraint dans sa position ouverte libérant le passage du fluide et qui est déplaçable dans sa position fermée par un mouvement de l'élément de séparation (5) le long d'un axe longitudinal (19) de l'accumulateur, moyennant quoi la surface intérieure (15) de l'ajutage (11) pour le corps de soupape (17) s'appuyant directement sur elle forme le guidage pour le mouvement de celui-ci entre la position ouverte et la position fermée, moyennant quoi le corps de soupape (17), sur son côté tourné vers l'élément de séparation (5), est configuré comme une plaque s'étendant de manière plane (17'), moyennant quoi le forage transversal (33) correspondant délimité par la plaque (17') dans la position ouverte débouche au moins partiellement dans le compartiment de fluide (9), et moyennant quoi un forage axial (31), qui est ouvert du côté du piston de soupape (17) détourné du compartiment de fluide (9), débouche dans le forage transversal correspondant (33), caractérisé en ce que le diamètre du corps de soupape (17) est plus grand que sa hauteur mesurée dans la direction de mouvement du corps de soupape (17) et en ce que le forage transversal correspondant (33) est configuré comme conduit de fluide dans le tiroir de soupape (17) qui, en passant radialement de bout en bout dans le piston de soupape (17), se coupe sur l'axe longitudinal (19).
  2. Accumulateur hydraulique selon la revendication 1, caractérisé en ce que le dispositif de soupape est conçu à la manière d'une soupape à tiroir et en ce que l'ajutage (11) servant de boíte de soupape définit avec sa surface intérieure cylindrique circulaire le forage de piston (15) pour le corps de soupape configuré comme un tiroir de soupape (17).
  3. Accumulateur hydraulique selon la revendication 2, caractérisé en ce que la zone d'extrémité de l'ajutage (11), qui est adjacente au compartiment de fluide (9), forme une arête de commande pour la libération et l'obturation de l'orifice du forage transversal (33).
  4. Accumulateur hydraulique selon la revendication 3, caractérisé par une plaque d'appui (25) ancrée dans le forage de piston (15) du côté du piston de soupape (17) détourné du compartiment de fluide (9), percée par au moins un forage débouchant (35), qui sert de butée pour un dispositif de ressort (21) tendu entre celle-ci et le piston de soupape (17) pour générer la force de précontrainte poussant le piston de soupape (17) dans la position ouverte.
  5. Accumulateur hydraulique selon l'une quelconque des revendications 2 à 4, caractérisé en ce que le nombre et la taille de la section transversale des forages (31, 33) s'étendant dans le piston de soupape (17) dans la direction axiale et/ou dans la direction transversale sont choisis en fonction d'un étranglement souhaité obtenu pendant le passage du fluide.
  6. Accumulateur hydraulique selon les revendications 4 et 5, caractérisé en ce que le dispositif de ressort comporte un ressort cylindrique de compression (21) et en ce qu'un forage axial (31) placé au centre du piston de soupape (17) sert, avec sa zone d'extrémité débouchant dans le au moins un forage transversal (33), de butée pour le ressort cylindrique de compression (21) tendu entre la plaque d'appui (25) et le piston de soupape (17). et s'engageant dans le forage axial (31).
  7. Accumulateur hydraulique selon l'une quelconque des revendications 2 à 6, caractérisé en ce que le forage de piston (15) forme, à sa zone d'extrémité (37) adjacente au compartiment de fluide (9), un tronçon de forage aminci pour la formation d'une surface d'épaulement annulaire (39) qui, en coopération avec une surface de contre-épaulement (41) faisant saillie dans le sens radial sur le piston de soupape (17), forme une butée sur laquelle le piston de soupape (17) s'appuie dans la position ouverte sous l'influence de la force de précontrainte s'exerçant sur lui.
  8. Accumulateur hydraulique selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les forages transversaux (33) passant de bout en bout dans le piston de soupape (17) se coupent à angle droit sur l'axe longitudinal central (19).
  9. Accumulateur hydraulique selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'ajutage (11) est soudé dans une ouverture du réservoir sous pression (1) située du côté de l'extrémité.
  10. Accumulateur hydraulique selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'ajutage (11) est façonné à une extrémité du réservoir sous pression (1) en une seule partie avec celui-ci par façonnage à chaud où à froid.
  11. Accumulateur hydraulique selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'ajutage (11) comporte un filetage mâle (43) dans son tronçon tourné vers le compartiment de fluide (9) et en ce qu'il est vissé avec un filetage femelle dans l'ouverture associée du réservoir sous pression (1) située du côté de l'extrémité.
  12. Accumulateur hydraulique selon la revendication 4 et selon l'une quelconque des autres revendications 1 à 11, caractérisé en ce que l'ajutage (11) comporte, dans le tronçon raccordé au forage de piston (15) du côté détourné du compartiment de fluide, un filetage femelle (13) dans lequel est vissée la plaque d'appui (25) munie d'un filetage mâle.
EP01987851A 2000-10-18 2001-10-12 Accumulateur hydraulique, notamment accumulateur de type vessie Expired - Lifetime EP1327081B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10051580 2000-10-18
DE10051580A DE10051580A1 (de) 2000-10-18 2000-10-18 Hydrospeicher, insbesondere Blasenspeicher
PCT/EP2001/011838 WO2002033266A2 (fr) 2000-10-18 2001-10-12 Accumulateur hydraulique, notamment accumulateur de type vessie

Publications (2)

Publication Number Publication Date
EP1327081A2 EP1327081A2 (fr) 2003-07-16
EP1327081B1 true EP1327081B1 (fr) 2005-05-25

Family

ID=7660181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01987851A Expired - Lifetime EP1327081B1 (fr) 2000-10-18 2001-10-12 Accumulateur hydraulique, notamment accumulateur de type vessie

Country Status (5)

Country Link
US (1) US6988514B2 (fr)
EP (1) EP1327081B1 (fr)
JP (1) JP4170754B2 (fr)
DE (2) DE10051580A1 (fr)
WO (1) WO2002033266A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10247688A1 (de) * 2002-04-26 2003-11-06 Continental Teves Ag & Co Ohg Hochdruckspeicher
DE10305310B4 (de) * 2003-02-10 2005-11-24 Robert Bosch Gmbh Vorrichtung zur Dämpfung von Druckpulsationen
DE10350941A1 (de) 2003-10-31 2005-06-02 Hydac Technology Gmbh Vorrichtung zum Dämpfen von Druckstößen
US20080189925A1 (en) * 2005-08-23 2008-08-14 Taho Valves Corporation Method for making water buffer device
DE102014209682A1 (de) * 2014-05-21 2015-11-26 Robert Bosch Gmbh Dämpfungsvorrichtung
US20160033051A1 (en) * 2014-07-31 2016-02-04 Parker-Hannifin Corporation Shutoff valve assembly
MX2022008059A (es) * 2019-12-27 2022-09-07 Performance Pulsation Control Inc Dispositivo de ahorro de vejiga.

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE23333E (en) * 1951-01-23 Storage device
USRE23437E (en) 1951-12-04 Oleopneumatic device
US2331921A (en) * 1938-05-31 1943-10-19 Mercier Jean Storage device
US2345124A (en) * 1941-12-01 1944-03-28 New York Air Brake Co Accumulator
US2731038A (en) * 1953-01-26 1956-01-17 Purcell Howard Milne Hydraulic accumulator
US3038501A (en) * 1957-12-05 1962-06-12 Greer Hydraulies Inc Pressure vessel
FR79885E (fr) 1961-05-31 1963-02-08 Perfectionnements aux séparateurs de fluide sous pression
DE2452882A1 (de) 1974-11-07 1976-05-13 Sugimura Zylindrischer sammler
US4068684A (en) 1975-08-11 1978-01-17 Greer Edward M Locking ring assembly for the liquid port of a pressure accumulator
DE2634945A1 (de) * 1976-08-04 1978-02-09 Bosch Gmbh Robert Ventil fuer einen druckspeicher
US4136714A (en) * 1976-12-27 1979-01-30 Creavco, Inc. Accumulator drain closure
US4509557A (en) 1983-07-08 1985-04-09 Nobuyuki Sugimura Accumulator
US5368073A (en) * 1993-10-07 1994-11-29 Essef Corporation Hydropneumatic pressure vessel having an improved diaphragm assembly
EP1133641B1 (fr) * 1998-11-25 2004-06-09 Continental Teves AG & Co. oHG Accumulateur d'agent de pression
US6460571B1 (en) * 2001-03-13 2002-10-08 Parker-Hannifin Corporation Crimped piston/membrane accumulator

Also Published As

Publication number Publication date
US20040020543A1 (en) 2004-02-05
DE10051580A1 (de) 2002-05-08
EP1327081A2 (fr) 2003-07-16
DE50106341D1 (de) 2005-06-30
WO2002033266A2 (fr) 2002-04-25
US6988514B2 (en) 2006-01-24
JP4170754B2 (ja) 2008-10-22
WO2002033266A3 (fr) 2002-08-29
JP2004514094A (ja) 2004-05-13

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