EP2226512B1 - Accumulateur hydraulique doté d'espaces d'accumulation montés en série - Google Patents

Accumulateur hydraulique doté d'espaces d'accumulation montés en série Download PDF

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Publication number
EP2226512B1
EP2226512B1 EP09003002A EP09003002A EP2226512B1 EP 2226512 B1 EP2226512 B1 EP 2226512B1 EP 09003002 A EP09003002 A EP 09003002A EP 09003002 A EP09003002 A EP 09003002A EP 2226512 B1 EP2226512 B1 EP 2226512B1
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EP
European Patent Office
Prior art keywords
accumulator
space
hydraulic
subspaces
hydraulic accumulator
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.)
Active
Application number
EP09003002A
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German (de)
English (en)
Other versions
EP2226512A1 (fr
Inventor
Thorsten Hillesheim
Franz-Josef Peterschilka
Stefan Auen
Frank Stubenrauch
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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Publication date
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Priority to AT09003002T priority Critical patent/ATE517263T1/de
Priority to EP09003002A priority patent/EP2226512B1/fr
Publication of EP2226512A1 publication Critical patent/EP2226512A1/fr
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Publication of EP2226512B1 publication Critical patent/EP2226512B1/fr
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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
    • 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
    • F15B2201/32—Accumulator separating means having multiple separating means, e.g. with an auxiliary piston sliding within a main piston, multiple membranes or combinations thereof

Definitions

  • the invention relates to a hydraulic accumulator for use in energy storage systems according to the preamble of patent claim 1.
  • the US-A-6 041 820 discloses a hydraulic accumulator of the type mentioned, which has two membranes.
  • Hydraulic accumulators of the type mentioned are already known from the prior art.
  • the generic type hydraulic accumulators are used in hydrosystems, in particular for energy storage.
  • pressure vessel in the receiving spaces a certain usable volume of a liquid medium can be stored.
  • the compressibility of a gaseous medium is used to pressurize the liquid medium with pressure.
  • the first separating element divides the receiving space in which the liquid medium is received from a storage space in which a gaseous, compressible medium is received.
  • the recording room in which the liquid medium is received, is usually associated with a hydraulic circuit. As soon as the liquid medium is pressed into the hydraulic accumulator under pressure, the gaseous medium in the storage space is compressed. At a pressure drop in the hydraulic circuit, the compressed gaseous medium can expand and return the received in the receiving space liquid medium to the hydraulic circuit.
  • a hydraulic accumulator of the type mentioned whose separating element is constructed of two layers.
  • One layer serves as a force-receiving layer and a second as a sealing layer.
  • a spring is arranged in a storage space, which presses the separating element against the receiving space and thereby expels the liquid medium from the hydraulic accumulator.
  • the invention is therefore based on the object, a hydraulic accumulator of the type mentioned in such a way and further, that this can promote a liquid medium with a constant delivery rate as possible or store with a constant recording rate as possible.
  • a hydraulic accumulator having the features of patent claim 1.
  • the aforementioned hydraulic accumulator is characterized in that the flexible membrane can be applied to a support wall, which is connected to the base body.
  • the discharge or absorption behavior of a hydraulic accumulator depends very greatly on the degree of expansion of the gaseous medium. It has also been recognized that, in particular in energy storage systems or hydraulic circuits, the most constant delivery rate and rate of absorption of a liquid medium is required. Finally, it has been recognized that equalization of the pressure-dependent delivery rate and the pressure-dependent intake rate of the liquid medium can be achieved by coupling two gas volumes which are connected to one another in a pressure-transmitting manner.
  • the Speicherunfierschreib are each separated by a second separation element from each other substantially gas-tight.
  • the volumes of the gaseous media in the individual storage subspaces can be coupled to one another particularly effectively in terms of pressure and force.
  • the second separating element is designed as a flexible membrane. Such a membrane is particularly flexible and yielding.
  • the flexible membrane can be applied to a support wall, which is connected to the base body.
  • the support wall stabilizes the flexible membrane and prevents overstretching or even tearing of the flexible membrane.
  • the gaseous media in the storage subspace could be under different pressures.
  • the gaseous medium in the first storage space which faces the receiving space or immediately adjacent, could be under a lower pressure than the gaseous medium in the other, second storage subspace.
  • the first storage subspace directly facing the receiving space can gently cushion a pressure surge by penetrating liquid medium. Furthermore, permeation of the gaseous medium out of the second storage subspace is avoided.
  • the storage subspaces could be connected in series pressure-transmitting. As a result, a space-saving arrangement of the storage subspace in a base body can be realized.
  • the space-saving design is accompanied by a weight savings. By cascading the memory subspaces, a jump in the pressure-output rate curve and the pressure-pickup rate curve is avoided when the pressure in the recording room rapidly increases or decreases.
  • At least one storage subspace could be connectable to a supply line. Due to this specific embodiment, the hydraulic accumulator can be connected to an external pressure source. In this way, the pressure-discharge rate curve or the pressure-absorption rate curve can be additionally smoothed.
  • Each storage subspace could be assigned its own supply line.
  • the hydraulic accumulator can also be used in energy storage systems in which pronounced pressure fluctuations occur.
  • a supply line to the second storage subspace can also be dispensed with.
  • the support wall could be curved and have a passage.
  • the curved formation allows a smooth and gentle material application of the flexible membrane to the support wall.
  • a gaseous medium can flow through and effectively transfer pressure to the first separating element between the storage space and the receiving space. Furthermore, the passage can act as a quasi-throttle and prevent too fast compression or expansion of a gaseous medium in a storage subspace.
  • the first separating element could be designed as a flexible membrane.
  • Flexible membranes are characterized by a reversible deformability and can quickly follow pressure surges.
  • the flexible membranes described here are usually made of an elastomer, in particular rubber.
  • the first separating element could also be designed as a metal bellows.
  • a metal bellows is characterized by a high stability and technical gas tightness even at high pressures.
  • the first separating element could also be designed as a piston.
  • a piston can be guided very defined in the body.
  • the hydraulic accumulator described herein could be used in a method for uniformly receiving and dispensing a liquid medium, wherein a plurality of gaseous media in storage subspaces are placed under different pressures, the gaseous media being compressed or expanded by varying the volumes of the respective storage subspaces, and wherein the gaseous media Media pressure-transmitting connected in series.
  • a hydraulic accumulator for use in energy storage systems comprising a base body 1, wherein the base body 1 accommodates a storage space 2 for a gaseous medium and a receiving space 3 for a liquid medium, wherein the storage space 2 from the receiving space 3 by a first separating element 4 is separated fluid-tight or liquid-tight and wherein the volumes of the storage space 2 and the receiving space 3 are variable.
  • the storage space 2 comprises at least two mutually substantially gas-tightly separated storage subspaces 5, 6, which are each filled with a gaseous medium.
  • the main body 1 is cigar-shaped. It has an elongated, cylindrical section, to which two ball caps 1a, 1b join on both sides.
  • the main body 1 is made of metal, in particular a non-ferrous metal, but can also be made of a plastic.
  • the main body 1 encloses the differently sized storage subspaces 5, 6 and the receiving space 3.
  • the main body 1, instead of the spherical caps 1 a, 1 b also have flat, not shown here, cover elements.
  • the gaseous media in the storage subspaces 5, 6 are under different pressures. Furthermore, the storage subspaces 5, 6 have different volumes. The first memory subspace 5 is larger than the second memory subspace 6.
  • the gaseous medium in the first storage subspace 5, which faces the receiving space 3, is under a lower pressure than the gaseous medium in the second storage space 6.
  • the storage subspaces 5 and 6 are connected in series in a pressure-transmitting manner.
  • the volume of the entire storage space 2 and the volume of the receiving space 3 are also changed at the same time.
  • the first memory subspace 5 is assigned a first supply line 7.
  • the second memory subspace 6 is associated with a further, second supply line 8.
  • the second supply line 8 is optional, since permeation of the gaseous medium from the second storage subspace 6 almost does not occur.
  • the storage subspaces 5, 6 are each separated from each other by a second separating element 9, namely a flexible membrane.
  • the flexible membrane is made of rubber and connected at its edge to the main body 1. Due to the flexible membrane, the gaseous media are pressure-transmitting coupled to each other and connected in series.
  • the flexible membrane is formed like a bag and can be applied to a support wall 10, which is connected to the base body 1.
  • the support wall 10 is curved and has a passage 11.
  • the support wall 10 is welded to the inner wall of the base body 1.
  • the support wall 10 is formed as a hemisphere, in the lowest point of the passage 11 is introduced.
  • the support wall 10 is convexly curved in the direction of the receiving space 3.
  • a stopper space 5a is formed, in which the bag-like membrane can move partially up and down.
  • the abutment space 5a is a part of the first storage subspace 5, the volume of which can be changed by movements of the flexible membrane and of the first separating element 4.
  • the first separating element 4 is also equipped as a flexible membrane made of rubber.
  • the first separating element 4 is also formed like a bag and protrudes into the receiving space 3. Upon penetration of a liquid medium from the hydraulic circuit into the receiving space 3 by a third supply line 12, the first separating element 4 can be pressed in the direction of the storage space 2.
  • the receiving space 3 can be connected by a third supply line 12 to the hydraulic circuit. Through the third supply line 12, a liquid medium 13 is fed into a hydraulic circuit or taken from this.
  • the receiving space 3 has only a single supply line 12. Through the Speicheruntemäume 5, 6 in which different pressures prevail, a linearized fluid pressure characteristic is generated.

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)
  • Degasification And Air Bubble Elimination (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Claims (10)

  1. Accumulateur hydraulique à utiliser dans des systèmes d'accumulation d'énergie, comprenant un corps de base (1), dans lequel le corps de base (1) contient une chambre d'accumulation (2) pour un fluide gazeux et une chambre de réception (3) pour un fluide liquide, dans lequel la chambre d'accumulation (2) est séparée de la chambre de réception (3) par un premier élément de séparation (4), dans lequel les volumes de la chambre d'accumulation (2) et de la chambre de réception (3) sont variables, dans lequel la chambre d'accumulation (2) comprend au moins deux espaces d'accumulation (5, 6) séparés l'un de l'autre, qui sont respectivement remplis d'un fluide gazeux, dans lequel les espaces d'accumulation (5, 6) sont chaque fois séparés l'un de l'autre par un deuxième élément de séparation (9), et dans lequel le deuxième élément de séparation (9) se présente sous la forme d'une membrane flexible, caractérisé en ce que la membrane flexible peut être appliquée sur une paroi de support (10), qui est reliée au corps de base (1).
  2. Accumulateur hydraulique selon la revendication 1, caractérisé en ce que les fluides gazeux se trouvent sous des pressions différentes dans les espaces d'accumulation (5, 6).
  3. Accumulateur hydraulique selon la revendication 2, caractérisé en ce que le fluide gazeux dans le premier espace d'accumulation (5), qui est tourné vers la chambre de réception (3) se trouve sous une pression plus faible que le fluide gazeux dans le deuxième espace d'accumulation (6).
  4. Accumulateur hydraulique selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les espaces d'accumulation (5, 6) sont montés en série de façon à transmettre la pression.
  5. Accumulateur hydraulique selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'au moins un espace d'accumulation (5, 6) peut être raccordé à une conduite d'alimentation (7, 8).
  6. Accumulateur hydraulique selon la revendication 5, caractérisé en ce qu'une conduite d'alimentation propre (7, 8) est associée à chaque espace d'accumulation (5, 6).
  7. Accumulateur hydraulique selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la paroi de support (10) est de forme bombée et présente un passage (11).
  8. Accumulateur hydraulique selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le premier élément de séparation (4) est réalisé sous la forme d'une membrane flexible.
  9. Accumulateur hydraulique selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le premier élément de séparation (4) est réalisé sous la forme d'un piston ou d'un soufflet métallique.
  10. Procédé pour la réception et la distribution uniforme d'un fluide liquide avec utilisation d'un accumulateur hydraulique selon l'une quelconque des revendications précédentes, dans lequel on place plusieurs fluides gazeux sous des pressions différentes dans des espaces d'accumulation (5, 6), dans lequel on comprime ou on détend les fluides gazeux en faisant varier les volumes des espaces d'accumulation respectifs (5, 6), et dans lequel on monte les fluides gazeux en série de façon à transmettre la pression.
EP09003002A 2009-03-03 2009-03-03 Accumulateur hydraulique doté d'espaces d'accumulation montés en série Active EP2226512B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT09003002T ATE517263T1 (de) 2009-03-03 2009-03-03 Hydrospeicher mit in reihe geschalteten speicherunterräumen
EP09003002A EP2226512B1 (fr) 2009-03-03 2009-03-03 Accumulateur hydraulique doté d'espaces d'accumulation montés en série

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09003002A EP2226512B1 (fr) 2009-03-03 2009-03-03 Accumulateur hydraulique doté d'espaces d'accumulation montés en série

Publications (2)

Publication Number Publication Date
EP2226512A1 EP2226512A1 (fr) 2010-09-08
EP2226512B1 true EP2226512B1 (fr) 2011-07-20

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EP09003002A Active EP2226512B1 (fr) 2009-03-03 2009-03-03 Accumulateur hydraulique doté d'espaces d'accumulation montés en série

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EP (1) EP2226512B1 (fr)
AT (1) ATE517263T1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2412556B1 (es) * 2011-11-16 2014-05-08 Roberto LABORDETA BAILO Ascensor hidraulico con mínimo consumo electrico.
JP2016524101A (ja) 2013-05-15 2016-08-12 テックネティックス グループ, エルエルシーTechnetics Group, Llc 高圧用途用デュアルベローズセパレータ
CN110332156B (zh) * 2019-08-14 2024-06-04 石家庄隆衢科技有限公司 隔膜式蓄能器
CN112758229A (zh) * 2021-01-11 2021-05-07 广东省胡明车业有限公司 一种按钮自锁四连杆折叠接头

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076479A (en) * 1960-11-02 1963-02-05 Ottung Kai Expansion means for self-contained liquid circulating systems
DE3844054A1 (de) 1988-12-28 1990-07-12 Asea Brown Boveri Energiespeicher
DE19813970A1 (de) * 1998-03-20 1999-09-30 Otto Heat Heizungs Kombiniertes Brauch- und Heizungswasserausdehnungsgefäß
FR2857420B1 (fr) * 2003-07-11 2006-08-04 Hydro Leduc Perfectionnements aux accumulateurs hydrauliques

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Publication number Publication date
ATE517263T1 (de) 2011-08-15
EP2226512A1 (fr) 2010-09-08

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