EP1279837B1 - Hydraulischer und/oder pneumatischer Druckspeicher - Google Patents

Hydraulischer und/oder pneumatischer Druckspeicher Download PDF

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Publication number
EP1279837B1
EP1279837B1 EP02012171A EP02012171A EP1279837B1 EP 1279837 B1 EP1279837 B1 EP 1279837B1 EP 02012171 A EP02012171 A EP 02012171A EP 02012171 A EP02012171 A EP 02012171A EP 1279837 B1 EP1279837 B1 EP 1279837B1
Authority
EP
European Patent Office
Prior art keywords
bladder
pressure
accumulator according
wall
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.)
Expired - Lifetime
Application number
EP02012171A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1279837A1 (de
Inventor
Gerhard Thurow
Christoph Bank
Paul Cerny
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.)
ContiTech Luftfedersysteme GmbH
Original Assignee
ContiTech Luftfedersysteme 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 ContiTech Luftfedersysteme GmbH filed Critical ContiTech Luftfedersysteme GmbH
Publication of EP1279837A1 publication Critical patent/EP1279837A1/de
Application granted granted Critical
Publication of EP1279837B1 publication Critical patent/EP1279837B1/de
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
    • F15B1/16—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
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3155—Accumulator separating means having flexible separating means characterised by the material of the 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
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3156—Accumulator separating means having flexible separating means characterised by their attachment

Definitions

  • the invention relates to a hydraulic and / or pneumatic pressure accumulator according to the preamble of claim 1.
  • a known from German Patent DE 28 01 224 C2 pressure accumulator consists a pressure-resistant cylindrical container made of metal, which at its upper end with a lid-shaped cap and is closed at its lower end with a bottom. Inside the container is a bag-like separator (bubble) of natural or Synthetic rubber. The bag-like partition is open at the bottom. The edge of the opening forms a tight connection to the bottom edge of the cylindrical container. To this As a result, two separate volumes are formed, namely a first volume within the bag-like separator and a second volume outside of bag-like separating element but within the cylindrical container. The first volume is accessible via an opening located in the bottom cap. The second volume is can be acted upon by a valve located in the upper lid of the container with pressure.
  • DE 10 92 262 B describes a pressure accumulator whose rigid housing is divided by a flexible intermediate wall (10) of expandable material into a gas and a liquid space.
  • the intermediate wall (10) is formed like a sack sack. In a certain stretching position, the intermediate wall (10) engages a perforated separate support member (15) fastened in the housing.
  • This support member (15) is an intermediate wall at least partially comprehensive, and in particular net or wicker body having a certain strength. In any case, the support member itself is not as yielding as the formed as a bubble intermediate wall (10). It depends on the size and the flexibility of the support member (15) to what extent the bladder (10) can be stretched by the internal pressure acting on it.
  • the aim is not a suitable for an air or hydraulic spring Additional volume of constant size but a variable additional volume.
  • at Memory function up to the atmospheric pressure should be a step of the p / v characteristic be avoided.
  • this can be realized with the aid of an integrated into a pressure vessel Bladder.
  • the membranous wall of the bladder made of an elastomeric material.
  • new membrane but not stretchable and arbitrarily deformable but the wall thickness and the other material properties of the bubble are chosen so that a certain elastic restoring force at an increase in volume due to internal overpressure Effect.
  • This elastic restoring force is greater, the stronger the Volume increase is, d. H. the stronger the volume of the without pressure surplus given initial volume deviates.
  • the bladder is provided with a reinforcing insert. These Reinforcement insert consists of practically inextensible cords or cords with one Elasticity, which is significantly lower than the elasticity of the elastomeric material the bubble wall.
  • the cords are diagonally aligned or vulcanized in the wall of the bladder. Due to the diagonality results in a bubble internal overpressure, a gradual increase in volume by shear effect . That is, the elongation of the bubble depends on the fabric angle and the elongation (extensibility) of the reinforcing member. Both factors influence the change in volume with even small pressure differences.
  • the interesting area of this application is in the response of the bubble volume at low to atmospheric pressure. Conventional reservoirs, where the bladder rests against the container wall, do not respond until the previously set pre-pressure is reached (see FIG. 4).
  • the diagonally or vulcanized reinforcing cords are preferably arranged crosswise. Becomes so exposed a bladder exposed to an internal overpressure, so come too Shear forces to advantage. The shear forces cancel each other out left / right-symmetrical, which, depending on the order of the cords (crossed flat or steeply crossed) an untwisted Elongation or an untwisted broadening of the bladder results.
  • diagonally or crosswise arranged cords can also be a tissue reinforcement to apply.
  • the p / V diagram can be influenced in the desired manner.
  • An untwisted broadening in a ground state with steeply crossed cords can stabilized in the longitudinal direction by an inextensible, axially arranged tie rods become.
  • the pressure accumulator according to the invention can also be a Control of the internal pressure of the membrane are made.
  • the design of the height in be influenced in an advantageous manner.
  • the pressure accumulator according to the invention is not only available as additional storage for air and Hydraulic springs suitable. Other hydraulic inserts are conceivable. there allows the pressure accumulator a steady pressure / volume curve of Atmospheric pressure up to maximum pressure.
  • the accumulator according to the invention is based on a Embodiment explained in more detail.
  • the pressure accumulator 2 consists of a pressure-stable container 4 with a cylindrical wall 6, with an integrated Floor 8 and with a flanged by means of bolts 10 lid 12.
  • the lid 12 is provided with a pressure port 14.
  • the container 4 made of metal or a suitable appropriate Made of plastic.
  • This bottle-shaped bladder 16 is down open. The edge of the opening is attached to the bottom 8 of the container 4 pressure-tight. about a pressure port 20 at the bottom 8 of the container 4 is the bottle-shaped bladder 16 pressurized.
  • the membrane-like wall 18 of the bladder 16 is made of elastomeric material and is with Reinforcements 22 reinforced in the form of cords or fabric.
  • the threads of the cords or the tissue are arranged diagonally crosswise, so that a diamond-shaped Pattern 24 results.
  • the diamonds 24 are on the top with acute angles above and below and obtuse angles on both sides.
  • Within the bottle-shaped bladder 16 is axially a tie rod 26 is attached.
  • the membrane 18 is not on the inner surface of the Housing wall 6 on.
  • the strength members 22 of the bellows wall 18 prevent another Expansion of the membrane 18.
  • pressure of the housing interior 28 of the Pressure accumulator 2 takes place even at low pressure deformation (Volume reduction) of the membrane body 16.
  • the decreasing difference between the housing internal pressure and membrane internal pressure causes a decrease in the Shearing the strength member 22 and a decrease in the elongation of the bellows wall 18.
  • Bei further increase of the housing internal pressure the strength member 22 continue relieves pressure until the membrane internal pressure and the internal pressure of the housing are equal.

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)
  • Diaphragms And Bellows (AREA)
  • Lubricants (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
EP02012171A 2001-07-27 2002-06-01 Hydraulischer und/oder pneumatischer Druckspeicher Expired - Lifetime EP1279837B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10136674 2001-07-27
DE10136674A DE10136674A1 (de) 2001-07-27 2001-07-27 Hydraulischer und/oder pneumatischer Druckspeicher

Publications (2)

Publication Number Publication Date
EP1279837A1 EP1279837A1 (de) 2003-01-29
EP1279837B1 true EP1279837B1 (de) 2005-12-07

Family

ID=7693330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02012171A Expired - Lifetime EP1279837B1 (de) 2001-07-27 2002-06-01 Hydraulischer und/oder pneumatischer Druckspeicher

Country Status (4)

Country Link
EP (1) EP1279837B1 (enrdf_load_stackoverflow)
AT (1) ATE312290T1 (enrdf_load_stackoverflow)
DE (2) DE10136674A1 (enrdf_load_stackoverflow)
HU (1) HU225012B1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10307587A1 (de) * 2003-02-22 2004-09-09 Hydac Technology Gmbh Speichervorrichtung, vorzugsweise Membranspeicher

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2337771A (en) * 1942-02-23 1943-12-28 Glenn L Martin Co Energizer
DE1092262B (de) * 1958-10-17 1960-11-03 Bosch Gmbh Robert Druckspeicher
US3442292A (en) * 1965-10-23 1969-05-06 Jacuzzi Brothers Inc Energy storage unit
FR2795142B1 (fr) * 1999-06-18 2001-09-07 Emile Kadoche Accumulateur hydropneumatique a vessie

Also Published As

Publication number Publication date
DE50205165D1 (de) 2006-01-12
ATE312290T1 (de) 2005-12-15
HU225012B1 (en) 2006-05-29
HU0202510D0 (enrdf_load_stackoverflow) 2002-09-28
DE10136674A1 (de) 2003-02-06
HUP0202510A3 (en) 2003-03-28
HUP0202510A2 (hu) 2003-01-28
EP1279837A1 (de) 2003-01-29

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