DK0902193T3 - Piston accumulator with depth filtration seal - Google Patents

Piston accumulator with depth filtration seal

Info

Publication number
DK0902193T3
DK0902193T3 DK98113168T DK98113168T DK0902193T3 DK 0902193 T3 DK0902193 T3 DK 0902193T3 DK 98113168 T DK98113168 T DK 98113168T DK 98113168 T DK98113168 T DK 98113168T DK 0902193 T3 DK0902193 T3 DK 0902193T3
Authority
DK
Denmark
Prior art keywords
piston
sealing rings
hydraulic
hydraulic fluid
depth filtration
Prior art date
Application number
DK98113168T
Other languages
Danish (da)
Inventor
Helmfried Kany
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
Application granted granted Critical
Publication of DK0902193T3 publication Critical patent/DK0902193T3/en

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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
    • 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
    • F15B2201/32—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Sealing Devices (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

A piston for separating the hydraulic side (14) of a pressure storage reservoir from a gas side (16) has piston sealing rings (18,20) of elastomer or of any other suitable sealing material. To protect the sealing rings from damage by debris in the hydraulic fluid a special felt ring (24) is fitted around the piston as the first ring seal to the hydraulic side. The felt collects any debris in the hydraulic fluid and ensures that only filtered fluid reaches the elastomer sealing rings. The main piston can be supplemented by a secondary piston on the gas side of the main piston, and connected to the main piston by a sprung coupling. The space between the two pistons is filled with clean hydraulic fluid.
DK98113168T 1997-09-12 1998-07-15 Piston accumulator with depth filtration seal DK0902193T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19740150A DE19740150A1 (en) 1997-09-12 1997-09-12 Piston accumulator with depth filtration seal

Publications (1)

Publication Number Publication Date
DK0902193T3 true DK0902193T3 (en) 2004-02-23

Family

ID=7842159

Family Applications (1)

Application Number Title Priority Date Filing Date
DK98113168T DK0902193T3 (en) 1997-09-12 1998-07-15 Piston accumulator with depth filtration seal

Country Status (6)

Country Link
EP (1) EP0902193B1 (en)
AT (1) ATE253177T1 (en)
DE (2) DE19740150A1 (en)
DK (1) DK0902193T3 (en)
ES (1) ES2210626T3 (en)
NO (1) NO320760B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10052665B4 (en) * 2000-10-24 2007-02-01 Zf Sachs Ag Piston accumulator for a pressure medium actuator
DE10111332B4 (en) * 2001-03-08 2004-08-19 Carl Freudenberg Kg piston accumulators
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
CN103511402A (en) * 2012-06-18 2014-01-15 中国航空工业集团公司西安飞机设计研究所 Method for preventing hydraulic lock and special pressure balance device for preventing hydraulic lock

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2019407B2 (en) * 1970-04-22 1975-07-10 Hydrotechnik Gmbh, 6051 Laemmerspiel Separating piston for a hydropneumatic storage cylinder - has seal whose contact pressure is increased with pressure differential
CH591020A5 (en) * 1975-08-15 1977-08-31 Gfeller Hans High pressure storage reservoir - has separator of two longitudinally displaceable pistons
SE447296B (en) * 1985-11-25 1986-11-03 Stromsholmens Mek Verkstad Cylinder flip device and axially movable piston
DE3619990A1 (en) * 1986-06-13 1987-12-17 Bosch Gmbh Robert Piston pressure accumulator
SE459275B (en) * 1987-10-23 1989-06-19 Volvo Flygmotor Ab DEVICE FOR UNFAMILYING OF METAL TIPS IN A PRESSURE FLUID CUMULATOR
DE4141929A1 (en) * 1991-12-19 1993-06-24 Bosch Gmbh Robert Piston-type accumulator - has connecting channel, which is partly helical, between piston chamber and atmosphere

Also Published As

Publication number Publication date
EP0902193A3 (en) 1999-07-07
EP0902193B1 (en) 2003-10-29
EP0902193A2 (en) 1999-03-17
ES2210626T3 (en) 2004-07-01
NO320760B1 (en) 2006-01-23
DE59810011D1 (en) 2003-12-04
DE19740150A1 (en) 1999-03-25
ATE253177T1 (en) 2003-11-15
NO984186D0 (en) 1998-09-11
NO984186L (en) 1999-03-15

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