EP2529121B1 - Accumulateur à piston - Google Patents

Accumulateur à piston Download PDF

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Publication number
EP2529121B1
EP2529121B1 EP10800950.7A EP10800950A EP2529121B1 EP 2529121 B1 EP2529121 B1 EP 2529121B1 EP 10800950 A EP10800950 A EP 10800950A EP 2529121 B1 EP2529121 B1 EP 2529121B1
Authority
EP
European Patent Office
Prior art keywords
space
cylinder
piston
cover
gas
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.)
Not-in-force
Application number
EP10800950.7A
Other languages
German (de)
English (en)
Other versions
EP2529121A1 (fr
Inventor
Ralph Engelberg
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2529121A1 publication Critical patent/EP2529121A1/fr
Application granted granted Critical
Publication of EP2529121B1 publication Critical patent/EP2529121B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F15B1/24—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
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having 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
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/405—Housings

Definitions

  • the present invention relates to a piston accumulator.
  • a piston accumulator which has a pressure vessel and a cylinder, wherein the cylinder is disposed within the pressure vessel. Between the pressure vessel and the cylinder, a gap is formed.
  • a separating piston is movably provided in the cylinder, a hydraulic fluid acting on a first side of the separating piston and a gas on a second side of the separating piston, and the gas in fluid communication with the gap and the hydraulic fluid in fluid communication with a port on the cylinder stands.
  • Piston accumulators are typically used to store large amounts of energy.
  • piston accumulators are used to store energy generated, for example, during braking of the wheels, and to release energy required, for example, when accelerating the vehicle.
  • Such a piston accumulator is for example in the document DE 10 2006 060 078 A1 described.
  • the defined in claim 1 piston accumulator offers over conventional solutions has the advantage that the cylinder is under no significant tension, as applied to the inside and outside of the cylinder, the same pressure.
  • the cylinder can be formed from a non-pressure-stable and therefore lightweight material. Due to the fact that the cylinder does not deform, a tight seal is also ensured between the cylinder and the moving piston in this movable. Further, a leak in the cylinder does not leak hydraulic fluid into the environment because the hydraulic fluid is caught by the pressure vessel. Further, escapes in a leak in the pressure vessel only gas, such as nitrogen, which is harmless to the environment.
  • the sole figure of the drawing shows in a longitudinal section a piston accumulator 1 according to a preferred embodiment of the present invention.
  • the piston accumulator 1 has a pressure vessel 2.
  • the pressure vessel 2 is composed of a base body 3 with a substantially annular cross-section and lids 4, 5, which close the base body 3 at its opposite ends.
  • a cylinder 6 is arranged within the pressure vessel 2.
  • the cylinder 6 preferably extends along the longitudinal axis 7 of the pressure vessel 2.
  • the cylinder 6 is composed of a base body 11 with a substantially annular cross-section and a lid 13 closing the base body 11 at its one end 12.
  • a separating piston 14 is provided movably.
  • the separating piston 14 is, as indicated by the double arrow in the figure, along the longitudinal axis 7 movable.
  • the separating piston 14 separates a hydraulic fluid 15 from a gas 16.
  • the hydraulic fluid 15 is located in a space 17 which is delimited by the main body 11, the cover 13 and an end face 18 of the separating piston 14.
  • the hydraulic fluid 15 can be supplied to the space 17 by means of a connection 22 or can be discharged therefrom. This makes it possible to pressurize the piston accumulator 1 with hydraulic fluid 15, for example, to store energy in this. Furthermore, it is possible to discharge hydraulic fluid 15 from the piston accumulator 1 in order thus to supply a load with energy.
  • the gas 16 is located in a space 24, which is bounded by an end face 18 opposite the end face 23 of the separating piston 14 and the base body 11.
  • the space 24 is connected to a gap 25 by means of an opening 26, so that the gas 16 between the space 24 and the gap 25 can flow.
  • the gap 25 is formed between the cylinder 6 and the pressure vessel 2.
  • the intermediate space 25 comprises an annular space 27, which surrounds the cylinder 6 along the longitudinal axis 7. Furthermore, the intermediate space 25 comprises spaces 31 and 32 in the region of the cover 4 or 5.
  • the intermediate space 25 can also be connected by means of a connection 33 to the pressure vessel 2, in particular to the cover 5, with a further, not shown, pressure vessel.
  • this hydraulic fluid 15 is supplied under pressure.
  • This causes the separating piston 14 to move to the right in the figure.
  • the separating piston 14 compresses the gas 16 present at the end face 23 of the separating piston 14.
  • this not only leads to a compression of the gas 16 in the space 24, but also to a compression of the gas 16 in the intermediate space 25, in particular the annular space 27.
  • This has the effect that on the cylinder 6 throughout the same pressure on the inside and outside is present. Accordingly, the cylinder 6 advantageously does not deform under the action of the hydraulic fluid 15.
  • the intermediate space 25 for receiving a comparatively large amount of gas 16 is ready.
  • This comparatively large amount of gas has a positive effect on the charging characteristics of the piston accumulator 1.
  • charging characteristic is meant in the present case the course of the pressure in the hydraulic fluid 15 or in the gas 16 as a function of the charge state, ie the degree of filling of the cylinder 6.
  • the gap 25 can be achieved that the pressure change, which is to be applied to the hydraulic fluid 15 in order to further compress the gas 16, is comparatively low.
  • the gas volume which can be received in the intermediate space 25 is at least 1.5 times, preferably at least 2 times, larger than the gas volume which can be accommodated in the space 24.
  • gas post-switching volume The volume of gas received in the intermediate space 25 is referred to herein as a gas post-switching volume.
  • gas afterglow volume is meant in the present case a gas volume which is dimensioned such that it is suitable for substantially influencing the charging characteristic of the piston accumulator 1.

Landscapes

  • 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 (4)

  1. Accumulateur à piston (1), présentant :
    un réservoir de pression (2) qui se compose d'un premier corps de base (3) avec une section transversale essentiellement annulaire et d'un premier couvercle (4) et d'un deuxième couvercle (5) qui ferment le corps de base (3) au niveau de ses extrémités opposées ;
    un cylindre (6) qui est disposé à l'intérieur du réservoir de pression (2) et qui se compose d'un deuxième corps de base (11) avec une section transversale essentiellement annulaire et d'un troisième couvercle (13) fermant le deuxième corps de base (11) au niveau de l'une de ses extrémités (12) ;
    un espace intermédiaire (25) réalisé entre le réservoir sous pression (2) et le cylindre (6), lequel comprend un espace annulaire (27) qui entoure le cylindre (6) le long d'un axe longitudinal (7) du cylindre (6) et qui comprend en outre un premier espace (31) dans la région du premier couvercle (4) et un deuxième espace (32) dans la région du deuxième couvercle (5) ;
    un piston de séparation (14) qui est prévu de manière déplaçable dans le cylindre (6), un liquide hydraulique (15) agissant sur un premier côté (18) du piston de séparation (14) et un gaz (16) agissant sur un deuxième côté (23) du piston de séparation (14) ;
    le liquide hydraulique (15) se trouvant dans un premier espace (17) qui est limité par le deuxième corps de base (11), le troisième couvercle (13) et un premier côté frontal (18) du piston de séparation (14), et le liquide hydraulique (15) pouvant être acheminé au premier espace (17) ou pouvant être évacué du premier espace (17) au moyen d'un raccord (22) qui est guidé à travers le troisième couvercle (13) et à travers le premier couvercle (4) ; et
    le gaz (16) se trouvant dans un deuxième espace (24) qui est limité par un deuxième côté frontal (23) du piston de séparation (14) opposé au premier côté frontal (18) et par le deuxième corps de base (11), le deuxième espace (24) étant connecté au moyen d'une ouverture (26) à l'espace intermédiaire (25) de telle sorte que le gaz (16) soit en liaison fluidique avec l'espace intermédiaire (25).
  2. Accumulateur à piston selon la revendication 1, dans lequel l'espace intermédiaire (25) peut être connecté au moyen d'un raccord (33) au niveau du réservoir de pression (2) à un réservoir de pression supplémentaire.
  3. Accumulateur à piston selon la revendication 2, dans lequel le raccord (33) est prévu au niveau du deuxième couvercle (5).
  4. Accumulateur à piston selon la revendication 1, 2 ou 3, dans lequel l'espace intermédiaire (25) présente un volume de gaz aval qui est réalisé de manière à être au moins 1,5 fois, de préférence au moins 2 fois plus grand qu'un volume de gaz maximal (16) dans le cylindre (6).
EP10800950.7A 2010-01-26 2010-12-29 Accumulateur à piston Not-in-force EP2529121B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010001200 DE102010001200A1 (de) 2010-01-26 2010-01-26 Kobenspeicher
PCT/EP2010/070866 WO2011091936A1 (fr) 2010-01-26 2010-12-29 Accumulateur à piston

Publications (2)

Publication Number Publication Date
EP2529121A1 EP2529121A1 (fr) 2012-12-05
EP2529121B1 true EP2529121B1 (fr) 2016-12-21

Family

ID=43806741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10800950.7A Not-in-force EP2529121B1 (fr) 2010-01-26 2010-12-29 Accumulateur à piston

Country Status (5)

Country Link
US (1) US8899270B2 (fr)
EP (1) EP2529121B1 (fr)
CN (1) CN102713311B (fr)
DE (1) DE102010001200A1 (fr)
WO (1) WO2011091936A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011090050A1 (de) 2011-12-28 2013-07-04 Robert Bosch Gmbh Verfahren zum Bestimmen einer Position eines Kolbens in einem Kolbendruckspeicher mittels Induktivsensoren sowie geeignet ausgebildeter Kolbendruckspeicher
DE102011090048A1 (de) 2011-12-28 2013-07-04 Robert Bosch Gmbh Verfahren zum Bestimmen einer Position eines Kolbens in einem Kolbendruckspeicher durch Widerstandsmessung sowie geeignet ausgebildeter Kolbendruckspeicher
DE102012218515A1 (de) 2012-10-11 2014-04-17 Robert Bosch Gmbh Verfahren zum Bestimmen eines Speicherfüllgrades in einem Kolbendruckspeicher mittels vereinfachter Modellierung
CN104514758A (zh) * 2013-09-27 2015-04-15 陈启星 基于集液器和夹心活塞的液封蓄能器及其液压系统
DE102013020543B4 (de) * 2013-11-25 2015-07-23 Carl Freudenberg Kg Kolbenspeicher
DE102014000380A1 (de) * 2014-01-14 2015-07-16 Hydac Technology Gmbh Speichereinrichtung
EP3343046A1 (fr) * 2016-12-27 2018-07-04 Eaton SAS Accumulateur
US10480552B2 (en) * 2017-01-27 2019-11-19 ClearMotion, Inc. Accumulator with secondary gas chamber
CN108167569A (zh) * 2018-02-13 2018-06-15 克拉玛依胜利高原机械有限公司 活塞式蓄能缓冲装置
DE102019124968B3 (de) * 2019-09-17 2021-01-21 Audi Ag Gaskolbenspeicher
DE102019124969B3 (de) * 2019-09-17 2021-01-21 Audi Ag Gaskolbenspeicher sowie Verfahren zur Gas-Befüllung eines Gaskolbenspeichers

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Publication number Priority date Publication date Assignee Title
US2417873A (en) * 1944-05-12 1947-03-25 New York Air Brake Co Accumulator
US2703108A (en) * 1950-12-04 1955-03-01 Tommy J Mccuistion Accumulator
US2715419A (en) * 1952-07-11 1955-08-16 Superior Pipe Specialties Co Accumulator
US2775255A (en) * 1952-07-19 1956-12-25 Robert E Snyder Apparatus for controlling hydraulic surge
US2742929A (en) * 1953-03-27 1956-04-24 Gen Motors Corp Pressure storage device
US2829673A (en) 1954-08-24 1958-04-08 Ind Instr Corp Pipe unions
US2829672A (en) * 1955-03-23 1958-04-08 Superior Pipe Specialties Co Accumulator
US3047023A (en) * 1959-06-26 1962-07-31 New York Air Brake Co Gas-charged accumulator-reservoir unit
US3136340A (en) * 1960-06-17 1964-06-09 Mc Graw Edison Co Accumulator for hydraulic systems
DE1525904A1 (de) * 1966-12-17 1970-02-05 Teves Gmbh Alfred Druckoelspeicher mit fliegendem Kolben
US3863676A (en) * 1973-04-23 1975-02-04 Parker Hannifin Corp Piston type accumulator
IT1185613B (it) 1985-05-30 1987-11-12 Magnaghi Cleodinamica Spa Accumulatore di pressione gas-olio con struttura in materiali compositi per circuiti idraulici di velivoli
DE3920030A1 (de) * 1988-06-25 1989-12-28 Zahnradfabrik Friedrichshafen Hydraulische energiespeicheranlage
US7108016B2 (en) 2004-03-08 2006-09-19 The United States Of America As Represented By The Administrator Of The Environmental Protection Agency Lightweight low permeation piston-in-sleeve accumulator
DE102006060078A1 (de) 2006-12-19 2008-06-26 Robert Bosch Gmbh Kolbenspeicher für Fahrzeuge
JP2010530049A (ja) * 2007-06-14 2010-09-02 リモ−ライド インコーポレイテッド コンパクト液圧アキュムレータ

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Title
None *

Also Published As

Publication number Publication date
CN102713311A (zh) 2012-10-03
US20130048126A1 (en) 2013-02-28
EP2529121A1 (fr) 2012-12-05
CN102713311B (zh) 2015-09-30
US8899270B2 (en) 2014-12-02
DE102010001200A1 (de) 2011-07-28
WO2011091936A1 (fr) 2011-08-04

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