EP2012020A3 - Piston accumulator - Google Patents

Piston accumulator Download PDF

Info

Publication number
EP2012020A3
EP2012020A3 EP08009865A EP08009865A EP2012020A3 EP 2012020 A3 EP2012020 A3 EP 2012020A3 EP 08009865 A EP08009865 A EP 08009865A EP 08009865 A EP08009865 A EP 08009865A EP 2012020 A3 EP2012020 A3 EP 2012020A3
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
port
accumulator
fluid
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.)
Granted
Application number
EP08009865A
Other languages
German (de)
French (fr)
Other versions
EP2012020B1 (en
EP2012020A2 (en
Inventor
Jürgen KNOBLOCH
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.)
AGCO GmbH and Co
Original Assignee
AGCO GmbH and Co
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 AGCO GmbH and Co filed Critical AGCO GmbH and Co
Publication of EP2012020A2 publication Critical patent/EP2012020A2/en
Publication of EP2012020A3 publication Critical patent/EP2012020A3/en
Application granted granted Critical
Publication of EP2012020B1 publication Critical patent/EP2012020B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F15B2201/20—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
    • F15B2201/31—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
    • F15B2201/30—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
    • 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
    • F15B2201/413—Liquid ports having multiple liquid ports

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)
  • Vehicle Body Suspensions (AREA)

Abstract

A piston accumulator (40) for damping two fluid systems is provided. The piston accumulator (40) comprises a cylinder (42), a first port (44) for a fluid system to be damped, which is disposed at one end of the cylinder (42), and a first piston (52), which is contained in a sealed manner and slidably in the cylinder (42). Furthermore, the piston accumulator (40) comprises a second port (46) for a second fluid system to be damped, which is disposed at the other end of the cylinder (42), and a second piston (54), which is contained in the cylinder (42) in a sealed manner and is slideable between the first piston (52) and the second port (46). A first damping volume (60), formed between the first (52) and the second piston (54), is or can be filled with fluid, preferably gas. The accumulator further comprises a third piston (68), which is contained in the cylinder (42) in a sealed manner and is slideable between the second piston (54) and the second port (46), wherein a second damping volume (70), formed between the second (54) and the third (68) piston, is or can be filled with fluid.
EP20080009865 2007-07-06 2008-05-30 Piston accumulator Expired - Fee Related EP2012020B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710031525 DE102007031525B4 (en) 2007-07-06 2007-07-06 Piston accumulator for damping two fluid systems

Publications (3)

Publication Number Publication Date
EP2012020A2 EP2012020A2 (en) 2009-01-07
EP2012020A3 true EP2012020A3 (en) 2011-04-06
EP2012020B1 EP2012020B1 (en) 2012-10-17

Family

ID=39865641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080009865 Expired - Fee Related EP2012020B1 (en) 2007-07-06 2008-05-30 Piston accumulator

Country Status (2)

Country Link
EP (1) EP2012020B1 (en)
DE (1) DE102007031525B4 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011047776A2 (en) 2009-10-19 2011-04-28 Hydac Technology Gmbh Device for releasing, in a pulsed manner, an amount of fluid that can be stored in an accumulator housing
CN104006008A (en) * 2014-06-13 2014-08-27 三一矿机有限公司 Buffer piston energy accumulator
DE102016003153A1 (en) * 2016-03-15 2017-09-21 Hydac Technology Gmbh Storage device and hydropneumatic suspension

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078031A1 (en) * 1981-10-26 1983-05-04 Deere & Company Pressure accumulator
DE9416577U1 (en) * 1993-11-10 1995-01-05 Hydac Technology Gmbh, 66280 Sulzbach Piston accumulator
GB2420380A (en) * 2004-11-18 2006-05-24 Parker Hannifin Plc Twin piston gas filled hydraulic actuator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869861A (en) * 1973-10-15 1975-03-11 Hesston Corp Combination hydraulic cylinder and accumulator
SE420436B (en) * 1980-02-04 1981-10-05 Gustav Weqscheider HYDROPNEUMATIC ACCUMULATOR WITH IN A CYLINDER FREE SHIPPING PISTON

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078031A1 (en) * 1981-10-26 1983-05-04 Deere & Company Pressure accumulator
DE9416577U1 (en) * 1993-11-10 1995-01-05 Hydac Technology Gmbh, 66280 Sulzbach Piston accumulator
GB2420380A (en) * 2004-11-18 2006-05-24 Parker Hannifin Plc Twin piston gas filled hydraulic actuator

Also Published As

Publication number Publication date
EP2012020B1 (en) 2012-10-17
DE102007031525A1 (en) 2009-01-08
DE102007031525B4 (en) 2009-09-10
EP2012020A2 (en) 2009-01-07

Similar Documents

Publication Publication Date Title
EP2258961A3 (en) Apparatus and methods for a vehicle shock absorber
EP2410203A3 (en) Suspension Damper with Remotely-Operable Valve
WO2007012283A8 (en) Pressurized magnetorheological fluid dampers
WO2007149393A3 (en) System and method for magnetorheological-fluid damping utilizing porous media
WO2010017200A3 (en) Subsea differential-area accumulator
EP2270355A3 (en) Hydraulic shock absorber
EP2130591A3 (en) Honeycomb structure
EP1688638A3 (en) Position-sensitive shock absorber
EP2530355A3 (en) Methods and apparatus for position sensitive and/or adjustable suspension damping
EP2116739A3 (en) Methods and apparatus for position sensitive suspension dampening
WO2009010643A3 (en) Shock absorber for aircraft landing gear
TW200734056A (en) Multivolume pipette
EP2113206A3 (en) Medical device package
EP2130592A3 (en) Honeycomb structure
EP1867399A3 (en) An injector for viscous fluids
EP2123933A3 (en) Shock absorber and vehicle
EP1955914A3 (en) Regenerative Braking Coordination Device
EP1881227A3 (en) Shock absorber
WO2006118445A3 (en) Dispensing device
FR2908485B1 (en) COMPACT SHOCK ABSORBER FOR AIRCRAFT AIRCRAFT AND LANDSCAPER COMPRISING SUCH SHOCK ABSORBER
EP1724507A3 (en) Double-walled pipe with leakage detection
EP2096268A3 (en) Valve assembly for regulating a fluid flow
EP2012020A3 (en) Piston accumulator
WO2015003194A3 (en) Fluid drainage container
EP1930620A3 (en) Hydraulic shock absorber

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20111006

AKX Designation fees paid

Designated state(s): DE FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602008019370

Country of ref document: DE

Effective date: 20121213

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20130718

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602008019370

Country of ref document: DE

Effective date: 20130718

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180522

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20180528

Year of fee payment: 11

Ref country code: FR

Payment date: 20180522

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20180518

Year of fee payment: 11

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602008019370

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190530

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191203

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190530

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190530

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190531