EP0854296A3 - Piston-type accumulator with sealing device - Google Patents

Piston-type accumulator with sealing device Download PDF

Info

Publication number
EP0854296A3
EP0854296A3 EP97118384A EP97118384A EP0854296A3 EP 0854296 A3 EP0854296 A3 EP 0854296A3 EP 97118384 A EP97118384 A EP 97118384A EP 97118384 A EP97118384 A EP 97118384A EP 0854296 A3 EP0854296 A3 EP 0854296A3
Authority
EP
European Patent Office
Prior art keywords
pistons
piston
accumulator
sealing device
sealing medium
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
EP97118384A
Other languages
German (de)
French (fr)
Other versions
EP0854296A2 (en
EP0854296B1 (en
Inventor
Helmfried Kany
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.)
Hydac Technology GmbH
Original Assignee
Hydac Technology 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 Hydac Technology GmbH filed Critical Hydac Technology GmbH
Publication of EP0854296A2 publication Critical patent/EP0854296A2/en
Publication of EP0854296A3 publication Critical patent/EP0854296A3/en
Application granted granted Critical
Publication of EP0854296B1 publication Critical patent/EP0854296B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/21—Accumulator cushioning means using springs
    • 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
    • F15B2201/312—Sealings therefor, e.g. piston rings
    • 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
    • F15B2201/3157—Sealings for 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
    • F15B2201/32—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
    • F15B2201/411—Liquid ports having valve means

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)
  • Fluid-Damping Devices (AREA)
  • Sealing Devices (AREA)

Abstract

The accumulator has two isolator pistons (12,18) which separate a fluid side (14) from a gas side (16), and an intermediate chamber (20) with sealing medium. The pistons are moved towards each by the force of a pretension unit, so that the sealing medium is compressed. The unit has a power accumulator (26) and a connection rod (28), which passes through both pistons. The accumulator is a compression spring, supported with its ends on the first piston and on the connecting rod. At least one of the pistons (12) has a closeable feed line (36) for the sealing medium, which opens into the intermediate chamber. The medium is a highly viscous oil.
EP97118384A 1997-01-16 1997-10-23 Piston-type accumulator with sealing device Expired - Lifetime EP0854296B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19701303 1997-01-16
DE19701303A DE19701303A1 (en) 1997-01-16 1997-01-16 Piston accumulator with sealing device

Publications (3)

Publication Number Publication Date
EP0854296A2 EP0854296A2 (en) 1998-07-22
EP0854296A3 true EP0854296A3 (en) 1999-07-07
EP0854296B1 EP0854296B1 (en) 2003-06-04

Family

ID=7817526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97118384A Expired - Lifetime EP0854296B1 (en) 1997-01-16 1997-10-23 Piston-type accumulator with sealing device

Country Status (3)

Country Link
EP (1) EP0854296B1 (en)
AT (1) ATE242431T1 (en)
DE (2) DE19701303A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10207181A1 (en) * 2001-11-05 2003-05-15 Continental Teves Ag & Co Ohg Pressure reservoir for electrohydraulic braking systems, consists of cylinder with piston with long skirt and sealing rings trapping high-pressure gas
DE10209663C1 (en) * 2002-03-05 2003-07-31 Hydac Technology Gmbh Pressure reservoir for fluid actuator has separator with filter and auxiliary piston to pressurize seal fluid around main piston
DE10242104A1 (en) * 2002-03-06 2003-09-18 Continental Teves Ag & Co Ohg Piston accumulator for electrohydraulic brake system of motor vehicle, has annular space filled with liquid and located between piston wall and accumulator housing, also has sensor for monitoring liquid volume inside liquid container
NO329959B1 (en) 2008-08-29 2011-01-31 Tool Tech As Procedure for using new flushing ports when cleaning a piston accumulator
CN104514758A (en) * 2013-09-27 2015-04-15 陈启星 Liquid seal energy accumulator based on liquid collector and sandwich piston and hydraulic system thereof
CN104295540B (en) * 2014-05-28 2017-10-20 国家电网公司 Accumulator and hydraulic actuating mechanism with gas leakage alarm
DE102022000975A1 (en) 2022-03-22 2023-09-28 Hydac Technology Gmbh Piston accumulator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2008740A1 (en) * 1970-02-25 1971-09-09 Langen & Co Hydro pneumatic piston pressure accumulator
CH591020A5 (en) * 1975-08-15 1977-08-31 Gfeller Hans High pressure storage reservoir - has separator of two longitudinally displaceable pistons
EP0078031A1 (en) * 1981-10-26 1983-05-04 Deere & Company Pressure accumulator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2008740A1 (en) * 1970-02-25 1971-09-09 Langen & Co Hydro pneumatic piston pressure accumulator
CH591020A5 (en) * 1975-08-15 1977-08-31 Gfeller Hans High pressure storage reservoir - has separator of two longitudinally displaceable pistons
EP0078031A1 (en) * 1981-10-26 1983-05-04 Deere & Company Pressure accumulator

Also Published As

Publication number Publication date
EP0854296A2 (en) 1998-07-22
EP0854296B1 (en) 2003-06-04
DE59710219D1 (en) 2003-07-10
ATE242431T1 (en) 2003-06-15
DE19701303A1 (en) 1998-07-23

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