EP1181457B1 - Hydropneumatischer druckspeicher - Google Patents
Hydropneumatischer druckspeicher Download PDFInfo
- Publication number
- EP1181457B1 EP1181457B1 EP00912582A EP00912582A EP1181457B1 EP 1181457 B1 EP1181457 B1 EP 1181457B1 EP 00912582 A EP00912582 A EP 00912582A EP 00912582 A EP00912582 A EP 00912582A EP 1181457 B1 EP1181457 B1 EP 1181457B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- end plate
- metal bellows
- tappet
- gas chamber
- 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
Links
Images
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
- F15B1/103—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means the separating means being bellows
-
- 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
- F15B2201/3153—Accumulator separating means having flexible separating means the flexible separating means being bellows
-
- 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
Definitions
- the invention relates to a hydropneumatic pressure accumulator with the features of the preamble of claim 1.
- Fig. 4 from PATENT ABSTRACTS OF JAPAN vol. 1996, no. 09, September 30, 1996, (1996-09-30) & JP 08 121401 A (NOK), May 14, 1996 (1996-05-14) is a generic hydropneumatic pressure accumulator known with a gas space and an oil space and a metal bellows separating these spaces, which has an end plate which can be moved in accordance with the volume changes from gas space to oil space.
- a valve tappet connected to the end plate of the metal bellows has a locking body, the two opposite sides of which are designed as valve cones and can be brought into contact with a valve seat, which is arranged on the separating plate, and once with a valve seat on the bottom-side hydraulic connection, which in Points towards the interior of the further fluid space.
- both the valve cones mentioned and the valve seats point away from one another with the apices of their conical surfaces, a good sealing behavior being achieved via the conical surfaces.
- the known device has a large structure and with regard to the fluid quantities to be moved in the metal bellows and additionally in the further fluid space, the actuation behavior for the valve is delayed, so that overloading of the metal bellows can occur, at least for a short time.
- the invention has for its object to provide a pressure accumulator of the type under consideration, in which overloads of the metal bellows during operation are avoided with certainty.
- a hydropneumatic pressure accumulator of the type mentioned this object is achieved according to the invention in that the hydraulic connection contains the valve with its two valve seats, that the apex of the conical surfaces of both valve seats and both valve cones face each other, and that the valve seats are arranged axially between the valve cones ,
- a compact hydraulic accumulator is created and the valve in the hydraulic connection is activated directly via the end plate of the metal bellows, so that due to the low fluid volume to be controlled in the metal bellows, in addition to the reduction in weight compared to known solutions, a particularly good response behavior is also ensured. Furthermore, overloading of the metal bellows is avoided with certainty.
- the pressure accumulator shown in FIG. 1 has a one designated as a whole Housing with a substantially circular cylindrical interior on.
- the housing 1 is provided with a hydraulic connection 2 at the bottom and points in its opposite the hydraulic connection 2
- Cover part 3 has a gas filling opening, which is closed by a plug 5 is and makes it possible, by filling with a compressible gas in the adjacent gas space 7 to produce a desired gas pre-filling pressure.
- a metal bellows 9 which has a circular cylindrical shape owns and is closed at one end by an end plate 11.
- the outer diameter of the bellows 9 is slightly smaller than the inner diameter of the housing 1.
- the hydraulic connection 2 contains a double-acting oil valve 15 two valve seats 17 and 18, which are each formed by conical surfaces. With the valve seats 17, 18 act blocking bodies in the form of valve cones 20 and 21 together, which are attached to a valve lifter 23, the attached to the inside of the end plate 11 of the bellows 9 and together with the end plate 11 during its lifting movements in the direction of a longitudinal axis 25 is movable back and forth.
- the related to the longitudinal axis 25 axial distances between the valve seats 17 and 18 and the associated Valve cones 20 and 21 on the valve lifter 23 are selected so that at a predetermined stroke length by which the end plate 11 in FIG.
- FIG. 2 In the embodiment of FIG. 2 is in contrast to the embodiment of Fig. 1, the interior of the bellows 9, the cover part 3 of the Housing 1 facing where the gas connection is located.
- the valve lifter 23 of the oil valve 15 on the Outside of the end plate 11 of the bellows 9 attached The way it works is the same as in the example of Fig. 1, i.e.
- Valve cone 20, 21 each when lifting the End plate 11 come in both directions along the longitudinal axis 25 Valve cone 20, 21 each when reaching the relevant end position System on the associated valve seats 17 and 18 to the supply or To block the discharge of hydraulic fluid into or from the oil space 8 and the corresponding end positions of the end plate 11 of the bellows 9 define.
- valve cones 20 and 21 facing each other, and valve seats 17 and 18 are located axially between the valve cones 20 and 21.
- a pressure gradient leads, as is the case with one would not result in complete locking of the valve 15 on the bellows 9, too a corresponding increase in the contact pressure between valve cones 20 or 21 on the associated valve seats 17 or 18.
- the axial distances between the valve seats 17, 18 of the valve 15 and the valve cone 20 and 21 are only given as examples. This Distances can be chosen as desired so that there is enough space for the end plate 11 of the bellows 9 in operation a desired working stroke length between the hydropneumatically defined end positions.
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)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Vehicle Body Suspensions (AREA)
Description
Bei einem hydropneumatischen Druckspeicher der eingangs genannten Art ist diese Aufgabe erfindungsgemäß dadurch gelöst, daß der Hydraulikanschluß das Ventil mit seinen beiden Ventilsitzen enthält, daß die Scheitel der Kegelflächen beider Ventilsitze und beider Ventilkegel einander zugewandt sind, und daß die Ventilsitze axial zwischen den Ventilkegeln angeordnet sind. Dergestalt ist ein kompakt aufbauender Hydrospeicher geschaffen und über die Endplatte des Metallbalges ist unmittelbar die Ansteuerung des Ventils im Hydraulikanschluß gegeben, so daß aufgrund des geringen zu beherrschenden Fluidvolumens im Metallbalg selbst neben der Gewichtsverringerung gegenüber bekannten Lösungen auch ein besonders gutes Ansprechverhalten gewährleistet ist. Ferner sind derart Überbelastungen des Metallbalges mit Sicherheit vermieden.
Wenn beim Betrieb des erfindungsgemäßen Druckspeichers einmal das Druck - Gleichgewicht zwischen Gas-Vorfülldruck im Gasraum und Hydraulikdruck im Ölraum hergestellt ist und die Endplatte des Metallbalges bei geöffnetem Ölventil sich zwischen ihren vorgegebenen Endstellungen befindet, dann bleibt dieser Betriebszustand des Druckausgleiches am Balg im Betrieb erhalten, ungeachtet dessen, wie stark der Hydraulikdruck der Ölseite gegenüber dem Gas - Vorfülldruck absinken mag, weil bei Erreichen der gewünschten Endstellung das Ventil schließt und der Abstrom aus dem Ölraum unterbrochen wird, und auch ungeachtet dessen, wie stark der Hydraulikdruck relativ zum Gas - Vorfülldruck ansteigen mag, weil bei Erreichen der diesbezüglichen Endstellung der Endplatte das Ventil wiederum geschlossen wird, so daß kein Zustrom zum Ölraum mehr möglich ist.
- Fig. 1
- einen schematisch vereinfachten Längsschnitt eines Ausführungsbeispiels des Druckspeichers und
- Fig. 2
- einen der Fig. 1 ähnlichen Längsschnitt eines zweiten Ausführungsbeispieles.
Claims (4)
- Hydropneumatischer Druckspeicher mit Gasraum (7) und Ölraum (8), die von einem Gehäuse (1) umgeben sind, das einen bodenseitigen Hydraulikanschluß (2) aufweist, und einem diese Räume trennenden Metallbalg (9), der eine entsprechend Volumenänderungen von Gasraum (7) und Ölraum (8) bewegliche Endplatte (11) aufweist, mit einem das Strömen von Hydraulikfluidum aus dem und in den Ölraum (8) freigebenden oder sperrenden Ventil (15) und mit einem das Ventil steuemden Ventilstößel (23), der bei einer Bewegung der Endplatte (11), die einer einen vorgegebenen Größtwert übersteigenden Vergrößerung des Volumens des Casraumes (7) entspricht, durch die Endplatte (11) in eine das Ventil (15) sperrende Stellung bewegbar ist, wobei der Ventilstößel (23) mit der Endplatte (11) des Metallbalges (9) fest verbunden und das Ventil (15) durch Bewegen des Ventilstößels (23) in zwei zueinander entgegengesetzte Sperrstellungen sperrbar ist, die den Endstellungen der Endplatte (11) des Metallbalges (9) beim vorgegebenen Größtwert bzw. bei einem vorgegebenen Kleinstwert des Volumens des Gasraumes (7) entsprechen, wobei das Ventil (15) zwei in der der Bewegungsrichtung des Ventilstößels (23) entsprechenden Axialrichtung zueinander versetzte Ventilsitze (17 und 18) und der Ventilstößel (23) zwei in Axialrichtung zueinander versetzte Sperrkörper (20 und 21) aufweisen, die bei Bewegen des Ventilstößels (23) in die eine oder die andere Richtung je paarweise zum Sperren des Ventiles (15) miteinander zusammenwirken und wobei die Ventilsitze/17,18) als Kegelflächen und die Sperrkörper als Ventilkegel (20,21) ausgebildet sind, dadurch gekennzeichnet, daß der Hydraulikanschluß (2) das Ventil (15) mit seinen beiden Ventilsitzen (17,18) enthält, daß die Scheitel der Kegelflächen beider Ventilsitze (17,18) und beider Ventilkegel (20,21) einander zugewandt sind und daß die Ventilsitze (17,18) axial zwischen den Ventilkegeln (20,21) angeordnet sind.
- Hydropneumatischer Druckspeicher nach Anspruch 1, dadurch gekennzeichnet, daß das das Strömen von Hydraulikfluidum steuernde Ventil (15) an dem der Endplatte (11) entgegengesetzten, offenen Ende des Metallbalges (9) vorgesehen ist, so daß der Innenraum des Metallbalges den Ölraum (8) bildet, durch den sich der Ventilstößel (23) hindurch bis zu seiner Befestigungsstelle an der Innenseite der Endplatte (11) erstreckt.
- Hydropneumatischer Druckspeicher nach Anspruch 1, dadurch gekennzeichnet, daß der Metallbalg (9) mit seiner Endplatte (11) dem das Strömen von Hydraulikfluidum steuemden Ventil (15) zugewandt ist, so daß das Innere des Metallbalges (9) den Gasraum (7) bildet und sich der Ölraum (8) an derAußenseite des Metallbalges (9) und dessen Endplatte (11) befindet, an der der Ventilstößel (23) außen befestigt ist.
- Hydropneumatischer Druckspeicher nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die axialen Abstände der Ventilsitze (17, 18) und der am Ventilstößel (23) vorgesehenen Sperrkörper (20, 21) so gewählt sind, daß die mit dem Ventilstößel (23) verbundene Endplatte (11) um eine gewünschte Hubstrecke zwischen ihren dem vorgegebenen Größtwert und dem vorgegebenen Kleinstwert des Volumens des Gasraumes (7) entsprechenden Endstellungen bei geöffnetem Ventil (15) beweglich ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924807A DE19924807A1 (de) | 1999-05-29 | 1999-05-29 | Hydropneumatischer Druckspeicher |
DE19924807 | 1999-05-29 | ||
PCT/EP2000/002083 WO2000073663A1 (de) | 1999-05-29 | 2000-03-10 | Hydropneumatischer druckspeicher |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1181457A1 EP1181457A1 (de) | 2002-02-27 |
EP1181457B1 true EP1181457B1 (de) | 2003-06-25 |
Family
ID=7909702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00912582A Expired - Lifetime EP1181457B1 (de) | 1999-05-29 | 2000-03-10 | Hydropneumatischer druckspeicher |
Country Status (6)
Country | Link |
---|---|
US (1) | US6527012B1 (de) |
EP (1) | EP1181457B1 (de) |
JP (1) | JP2003500614A (de) |
AT (1) | ATE243813T1 (de) |
DE (2) | DE19924807A1 (de) |
WO (1) | WO2000073663A1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7614568B2 (en) * | 2000-08-24 | 2009-11-10 | Microlin, Llc | Device employing gas generating cell for facilitating controlled release of fluid into ambient environment |
DE19954326B4 (de) * | 1999-11-11 | 2006-06-29 | Lucas Varity Gmbh | Fahrzeugbremsanlage mit einem Gasdruckspeicher |
DE10003648A1 (de) | 2000-01-29 | 2001-08-09 | Hydac Technology Gmbh | Hydropneumatischer Druckspeicher |
DE10101854A1 (de) * | 2000-08-30 | 2002-06-13 | Continental Teves Ag & Co Ohg | Druckmittelspeicher |
JP2002372001A (ja) * | 2001-06-12 | 2002-12-26 | Aisin Seiki Co Ltd | アキュームレータ |
US7121304B2 (en) * | 2001-12-19 | 2006-10-17 | The United States Of America As Represented By The Administrator Of The U.S. Environmental Protection Agency | Low permeation hydraulic accumulator |
DE10163764C1 (de) * | 2001-12-27 | 2003-08-07 | Witzenmann Gmbh | Hydropneumatischer Druckspeicher |
US6772794B2 (en) * | 2002-01-24 | 2004-08-10 | Seguin Carl | Variable volume reservoir |
JP3906915B2 (ja) * | 2002-07-15 | 2007-04-18 | 株式会社アドヴィックス | 液圧回路 |
JP2004051005A (ja) * | 2002-07-22 | 2004-02-19 | Advics:Kk | ブレーキアクチュエータ用圧入部品 |
DE10233481A1 (de) * | 2002-07-24 | 2004-02-12 | Hydraulik-Ring Gmbh | Speicher für ein flüssiges Medium |
DE10304288A1 (de) * | 2002-10-24 | 2004-05-13 | Continental Teves Ag & Co. Ohg | Druckmittelspeicher |
DE10249750B4 (de) * | 2002-10-25 | 2014-11-06 | Cummins Ltd. | Ausgleichsvorrichtung zur Aufnahme der Volumenausdehnung von Medien, insbesondere einer Harnstoff-Wasser-Lösung, beim Einfrieren |
DE10304999A1 (de) * | 2003-02-07 | 2004-08-19 | Carl Freudenberg Kg | Metallbalgdruckspeicher |
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 |
DE102007003724A1 (de) * | 2007-01-25 | 2008-07-31 | Hydac Technology Gmbh | Druckbehälter, insbesondere Hydrospeicher |
US8113390B2 (en) * | 2007-04-18 | 2012-02-14 | Microlin, Llc | Gas generation dispenser apparatus and method for on-demand fluid delivery |
DE102008016354A1 (de) * | 2007-08-28 | 2009-05-28 | Continental Teves Ag & Co. Ohg | Druckspeicher |
CN102227564B (zh) * | 2008-10-03 | 2015-08-19 | 伊顿公司 | 液压蓄能器和制造方法 |
US20100176214A1 (en) * | 2009-01-13 | 2010-07-15 | Joshi Ashok V | Greeting card fragrance delivery system |
EP2714102B1 (de) | 2011-06-03 | 2018-10-10 | Microlin, LLC | Vorrichtung zur abgabe flüchtiger flüssigkeiten in eine gasförmige umgebung |
WO2015015882A1 (ja) * | 2013-07-29 | 2015-02-05 | イーグル工業株式会社 | アキュムレータ |
US10323746B2 (en) * | 2015-05-29 | 2019-06-18 | Eagle Industry Co., Ltd. | Metal bellows type accumulator |
JP6803271B2 (ja) * | 2017-03-13 | 2020-12-23 | 日本発條株式会社 | アキュムレータ |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS567113B2 (de) * | 1972-12-25 | 1981-02-16 | ||
JPS57158154A (en) | 1981-03-26 | 1982-09-29 | Nippon Air Brake Co Ltd | Liquid pressure control apparatus for anti-skid device |
DE8900483U1 (de) * | 1989-01-18 | 1990-05-17 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
JPH08121401A (ja) * | 1994-10-21 | 1996-05-14 | Nok Corp | アキュムレータ |
US5638868A (en) * | 1996-06-05 | 1997-06-17 | Valcor Engineering | Accumulator |
DE19706427A1 (de) * | 1997-02-19 | 1998-08-20 | Itt Mfg Enterprises Inc | Druckmittelspeicher |
EP1052412B1 (de) * | 1999-05-12 | 2005-03-09 | NHK Spring Co., Ltd. | Druckspeicher und dessen Herstellungsverfahren |
-
1999
- 1999-05-29 DE DE19924807A patent/DE19924807A1/de not_active Withdrawn
-
2000
- 2000-03-10 AT AT00912582T patent/ATE243813T1/de not_active IP Right Cessation
- 2000-03-10 JP JP2001500126A patent/JP2003500614A/ja active Pending
- 2000-03-10 WO PCT/EP2000/002083 patent/WO2000073663A1/de active IP Right Grant
- 2000-03-10 EP EP00912582A patent/EP1181457B1/de not_active Expired - Lifetime
- 2000-03-10 DE DE50002656T patent/DE50002656D1/de not_active Expired - Lifetime
- 2000-03-10 US US09/979,267 patent/US6527012B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6527012B1 (en) | 2003-03-04 |
EP1181457A1 (de) | 2002-02-27 |
DE50002656D1 (de) | 2003-07-31 |
DE19924807A1 (de) | 2000-12-07 |
JP2003500614A (ja) | 2003-01-07 |
ATE243813T1 (de) | 2003-07-15 |
WO2000073663A1 (de) | 2000-12-07 |
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