EP0135850A1 - Accumulateur à haute pression - Google Patents

Accumulateur à haute pression Download PDF

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Publication number
EP0135850A1
EP0135850A1 EP84110454A EP84110454A EP0135850A1 EP 0135850 A1 EP0135850 A1 EP 0135850A1 EP 84110454 A EP84110454 A EP 84110454A EP 84110454 A EP84110454 A EP 84110454A EP 0135850 A1 EP0135850 A1 EP 0135850A1
Authority
EP
European Patent Office
Prior art keywords
piston
pressure
gas
support tube
spring
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
EP84110454A
Other languages
German (de)
English (en)
Other versions
EP0135850B2 (en
EP0135850B1 (fr
Inventor
Wilfried Dr. Kruckewitt
Horst Plettner
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.)
ABB AG Germany
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie AG Germany
Asea Brown Boveri AG Germany
BBC Brown Boveri AG Germany
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6210111&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0135850(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Brown Boveri und Cie AG Germany, Asea Brown Boveri AG Germany, BBC Brown Boveri AG Germany filed Critical Brown Boveri und Cie AG Germany
Priority to AT84110454T priority Critical patent/ATE21731T1/de
Publication of EP0135850A1 publication Critical patent/EP0135850A1/fr
Application granted granted Critical
Publication of EP0135850B1 publication Critical patent/EP0135850B1/fr
Publication of EP0135850B2 publication Critical patent/EP0135850B2/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
    • F15B1/24—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
    • 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
    • F15B2201/415—Gas ports
    • F15B2201/4155—Gas 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
    • F15B2201/50—Monitoring, detection and testing means for accumulators
    • F15B2201/51—Pressure detection

Definitions

  • the invention relates to a high-pressure accumulator according to the preamble of claim 1.
  • High-pressure accumulators of this type serve to provide hydraulic oil for a hydraulic system, in particular an electrical high-voltage circuit breaker.
  • high-pressure accumulators of this type have an approximately cylindrical body which is closed at both ends in a pressure-tight manner by means of end caps. Inside the cylindrical body there is a piston that separates a gas space from the hydraulic fluid side.
  • the gas-side cover is connected to a gas connection for the refilling of leek gas and the oil-side is connected to an oil connection.
  • the pressurized gas usually N 2
  • N 2 the pressurized gas
  • the main problem to be dealt with is that the gas used as a spring slowly flows out of the gas space, since absolute tightness can rarely be achieved. If the full amount of gas is now available, the maximum distance to be covered by the piston is placed in the cylinder space or accumulator body in such a way that the accumulator piston basically does not hit the support tube when the oil is returned to the accumulator. However, if a certain leakage has occurred, the storage piston can come to rest against the support tube during the filling process.
  • the filling process is generally carried out in such a way that the pump continues to run for a few seconds above the cut-off pressure, that is to say above a certain pressure at which the pump could be switched off because there is sufficient oil again in the reservoir. As mentioned, the piston can lie against the support tube.
  • the object of the invention is to provide a memory of the type mentioned in the introduction, in which a prewarning signal is given in the case of a certain leakage condition, but which is of particularly simple design.
  • FIG. 1 shows a diagram of the pressure over the running time of a pump for filling up a gas pressure accumulator shown schematically in FIG.
  • a cylindrical body 10 can be seen in FIG. 2, which is closed at both ends by means of a cover 11 and 12.
  • a piston 13 is guided to move back and forth within the cylinder and separates the left, gas-filled space 14 from the right, oil-filled space 15.
  • N 2 is expediently used as the gas.
  • a support tube 16 is attached, which runs in the central axis of the cylinder.
  • a spring 17 is attached, on the free end of which a stop 18 is attached.
  • curve K 1 will change.
  • the starting position of the piston will shift to the left, so that at the same pressure P E , that is, when the pump starts to deliver oil, the movement of the piston begins at T e i n2 . It runs parallel to K 1 and below it to point T A2 , at the pressure P A. From there, the run-on time t V begins, so that the pump continues to run over the period T A2 , so that the piston lies on the spring at T BE . Then the curve K 2 runs parallel to the curve K 1 with the steeper angle, the pressure P out1 being exceeded and continuing to rise up to the pressure P out2 .
  • a certain pressure PW is exceeded, which is to be regarded as a warning pressure for the fact that the leakage of the gas will soon become so great that the piston compresses the spring on the block and thus the steep area of the curve K 1 or K 2 is reached, if the pump continues to deliver oil.
  • the advance warning pressure means that a critical stage has now been reached at which it is slowly advisable to compensate for the leakage losses in the gas, ie in room 14. If the leakage is even greater, then there is the problem that the blocking position T BL of the spring 17 is reached during the follow-up time tv, so that the pressure curve approaches a vertical line, ie the pressure suddenly rises very steeply.
  • P S approximately
  • FIG. 3 shows a structural design of a hydraulic accumulator in the diagram.
  • a storage piston 33 is displaceably arranged within the storage housing and separates the space 34 in which gas is filled from the oil pressure space 35. Gas can be filled into the space 34 at a feed valve 36.
  • a support tube 37 is attached to the cover 32 and has a dividing wall 38 in its central region; the support tube 37 extends beyond the partition with an extension 39.
  • the extension 39 comprises a piston 40 to which a stop 41 is attached and guides it.
  • the wall 38 is penetrated by a screw bolt 42, which rests with its screw head 43 against the left side of the wall and is screwed into the interior of the piston 40 with its free end.
  • a pressure spring assembly 44 is located between the wall 38 and the piston 40.
  • the movement of the piston 40 in The direction of the arrow A is limited by the nut 43 striking the wall 38 and the movement of the piston 40 to the left B by the fact that the spring windings or spring elements lie one on top of the other in the block. You can of course also ensure that the distance D between the free end of the support tube 38 or the cylinder 39 and the stop 41 corresponds to the distance between T BE and T B lock . Then the same thing is achieved as in FIG. 2 when the spring 17 lies on the block.
  • the mode of operation of the hydraulic accumulator according to FIG. 2 explained with reference to FIG. 1 corresponds identically to the mode of operation of the hydraulic accumulator according to FIG. 3, so that it does not have to be discussed in more detail.
  • the piston does not run directly onto the support tube, but first onto the stop 18 or 41, which is under the pressure of a spring, so that the gas characteristic overlaps the spring characteristic of the spring 17 or 44 becomes. This makes it possible for the pressure to exceed a prewarning pressure, which signals that the leak in space 14 has reached a certain amount, so that it is necessary to refill gas as soon as possible.

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)
  • Braking Systems And Boosters (AREA)
EP84110454A 1983-09-26 1984-09-03 High pressure accumulator Expired - Lifetime EP0135850B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84110454T ATE21731T1 (de) 1983-09-26 1984-09-03 Hochdruckspeicher.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3334813 1983-09-26
DE19833334813 DE3334813A1 (de) 1983-09-26 1983-09-26 Hochdruckspeicher

Publications (3)

Publication Number Publication Date
EP0135850A1 true EP0135850A1 (fr) 1985-04-03
EP0135850B1 EP0135850B1 (fr) 1986-08-27
EP0135850B2 EP0135850B2 (en) 1990-02-07

Family

ID=6210111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110454A Expired - Lifetime EP0135850B2 (en) 1983-09-26 1984-09-03 High pressure accumulator

Country Status (4)

Country Link
US (1) US4611634A (fr)
EP (1) EP0135850B2 (fr)
AT (1) ATE21731T1 (fr)
DE (2) DE3334813A1 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5131226A (en) * 1987-07-09 1992-07-21 Milad Limited Partnership Variable volume reservoir and method for its use
US5074193A (en) * 1987-07-29 1991-12-24 Brunswick Corporation Marine power steering system
US5241894A (en) * 1987-07-29 1993-09-07 Brunswick Corporation Marine power steering system
DE3802500C1 (fr) * 1988-01-28 1989-06-22 Roboflex Ag, Weinfelden, Ch
US5660532A (en) * 1988-05-02 1997-08-26 Institut Francais Du Petrole Multiphase piston-type pumping system and applications of this system
JPH02186102A (ja) * 1989-01-10 1990-07-20 Nakamura Koki Kk ピストン型アキュムレータのピストン位置検知装置
US5309817A (en) * 1993-03-05 1994-05-10 Sims James O Linear brake for fluid actuator
US7028934B2 (en) * 2003-07-31 2006-04-18 F. L. Smidth Inc. Vertical roller mill with improved hydro-pneumatic loading system
US20080189925A1 (en) * 2005-08-23 2008-08-14 Taho Valves Corporation Method for making water buffer device
US7661442B2 (en) * 2007-06-14 2010-02-16 Limo-Reid, Inc. Compact hydraulic accumulator
EP2466151A1 (fr) * 2007-09-10 2012-06-20 Cameron International Corporation Bouteille d'accumulateur a pression compensée
US7527074B1 (en) * 2007-10-15 2009-05-05 The United States of America, as represented by the Administrator of the United States Enviromental Protection Agency Hydraulic pressure accumulator
KR101309317B1 (ko) * 2009-09-10 2013-09-30 엘에스산전 주식회사 가스 차단기용 밸브 및 그를 이용한 가스 차단기
US9194401B2 (en) 2010-09-22 2015-11-24 Nrg Enterprises, Inc. Ultra lightweight and compact accumulator
NO332527B1 (no) * 2010-12-08 2012-10-08 Tool Tech As Fremgangsmate for tilstandsovervaking av hydrauliske akkumulatorer
US8656959B2 (en) * 2011-09-23 2014-02-25 GM Global Technology Operations LLC Hydraulic accumulator
CN103967848A (zh) * 2013-01-30 2014-08-06 韦特柯格雷控制系统有限公司 液压储蓄器
DE102013012752B4 (de) * 2013-07-31 2019-12-24 Audi Ag Hydrauliksystem für ein Automatikgetriebe eines Kraftfahrzeugs
FI127612B (fi) * 2014-12-04 2018-10-15 Aalto Korkeakoulusaeaetioe Mäntäpaineakku
JP2017065575A (ja) * 2015-09-30 2017-04-06 マツダ株式会社 車両の回生システム

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2240394A1 (de) * 1972-08-17 1974-02-28 Licentia Gmbh Hydro-pneumatischer kraftspeicher
US4014213A (en) * 1975-12-01 1977-03-29 J. I. Case Company Accumulator warning system
US4186777A (en) * 1978-10-27 1980-02-05 Deere & Company Pressure vessel retained energy measurement system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1090469B (fr) *
US3095013A (en) * 1958-07-30 1963-06-25 Mercier Jean Pressure vessels
DE2336965A1 (de) * 1973-07-20 1975-02-06 Hydraulik Zubehoer Ges Fuer Hydropneumatischer druckspeicher
CH624453A5 (fr) * 1977-11-04 1981-07-31 Bbc Brown Boveri & Cie
FR2418356A1 (fr) * 1978-02-27 1979-09-21 Gratzmuller Jean Louis Accumulateur hydro-pneumatique a piston muni d'un dispositif detecteur de manque de gaz
US4207563A (en) * 1978-06-08 1980-06-10 Midland-Ross Corporation Gas charged accumulator with failure indicator
DE3048651A1 (de) * 1980-12-23 1982-07-15 Gesellschaft für Hydraulik-Zubehör mbH, 6603 Sulzbach "druckbehaelter, insbesondere hydropneumatischer speicher"
DE3138214A1 (de) * 1981-09-22 1983-04-07 Siemens AG, 1000 Berlin und 8000 München Aus kolben und zylinder bestehender hydropneumatischer druckspeicher

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2240394A1 (de) * 1972-08-17 1974-02-28 Licentia Gmbh Hydro-pneumatischer kraftspeicher
US4014213A (en) * 1975-12-01 1977-03-29 J. I. Case Company Accumulator warning system
US4186777A (en) * 1978-10-27 1980-02-05 Deere & Company Pressure vessel retained energy measurement system

Also Published As

Publication number Publication date
EP0135850B2 (en) 1990-02-07
ATE21731T1 (de) 1986-09-15
EP0135850B1 (fr) 1986-08-27
US4611634A (en) 1986-09-16
DE3460565D1 (en) 1986-10-02
DE3334813A1 (de) 1985-04-11

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