EP0244044A2 - Akustisches Filter - Google Patents

Akustisches Filter Download PDF

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Publication number
EP0244044A2
EP0244044A2 EP87201090A EP87201090A EP0244044A2 EP 0244044 A2 EP0244044 A2 EP 0244044A2 EP 87201090 A EP87201090 A EP 87201090A EP 87201090 A EP87201090 A EP 87201090A EP 0244044 A2 EP0244044 A2 EP 0244044A2
Authority
EP
European Patent Office
Prior art keywords
tube
diffuser
rings
filter according
ring
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
EP87201090A
Other languages
English (en)
French (fr)
Other versions
EP0244044A3 (en
EP0244044B1 (de
Inventor
Philippe Richard
Jean-Charles Papillon
Alain Guyot
Carlo Corbellini
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP0244044A2 publication Critical patent/EP0244044A2/de
Publication of EP0244044A3 publication Critical patent/EP0244044A3/fr
Application granted granted Critical
Publication of EP0244044B1 publication Critical patent/EP0244044B1/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
    • 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
    • F15B2201/3151—Accumulator separating means having flexible separating means the flexible separating means being diaphragms or membranes
    • 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
    • F15B2201/40—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
    • 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
    • F15B2201/43—Anti-extrusion means

Definitions

  • the present invention relates to an acoustic filter comprising a body having an inlet orifice and an outlet, a tube pierced with orifices connecting the inlet orifice to the outlet orifice of the body and intended for circulation of a liquid, a bladder made of a flexible and deformable material, said bladder surrounding the tube and delimiting a chamber for a gas under pressure.
  • the invention solves the problem of creating a filter in which the risks of rupture of the membrane are eliminated.
  • the diffuser holder assembly mounted around the tube is made of a flexible material close to that of the bladder and has orifices having a large passage cross section relative to that of the orifices of the tube.
  • the diffuser holder assembly is made up of diffuser rings mounted on the tube with a spacing determined so as to leave an annular passage for a fluid between two successive diffuser rings.
  • the advantages obtained thanks to this invention essentially consist in that the bladder does not deteriorate when it is in contact with the diffuser holder assembly. On the other hand, a large passage section is provided for the liquid.
  • the diffuser rings are shaped so that the annular passages existing between two successive rings are open when the pressure prevailing inside the tube is greater than the pressure outside bladder and closed otherwise.
  • each diffuser consists of a metal frame surrounded externally by an elastomer ring.
  • the frame has a male cone section, the elastomer ring having a female cone-shaped part of larger diameter than that of the male cone.
  • each diffuser ring consists of a cylindrical metal frame surrounded externally by an elastomer ring having lips capable of approaching those of the neighboring diffuser when hydraulic pressure is exerted from the outside on said rings.
  • FIG. 1 shows an acoustic filter produced in accordance with the invention.
  • This filter is intended to be mounted in line on a pipe. It is used to absorb pressure waves caused for example by piston pumps or any other material.
  • it comprises a body 2 consisting of a cylinder 2a with relatively thick walls, at each end of which are mounted two attachment screws 2b.
  • a notched nut is screwed onto each of the hooking screws.
  • a hooking ring is mounted in a recess of each of the hooking screws. Inside the attachment rings there are fittings for connecting the filter to a pipe.
  • a knurled plug 6 is screwed onto a thread of the cylinder 2a.
  • a tube called a diffuser tube, connects the fitting located at the left end of the figure to the fitting located at the right end.
  • Diffuser rings according to the invention are mounted on the tube 7.
  • FIG. 2 a sectional view of the acoustic filter of Figure 1.
  • the tube 7 is pierced with holes 13.
  • the diffusers, designated by the reference 20a are constituted by a frame 21a surrounded externally by a ring 23a elastometer.
  • Each frame 21a has a cylindrical shape of circular section. It is centered on the tube 7 of polygonal outer section. It has at one of its ends a spacer constituted, in the embodiment described, by four projections formed on the frame 21a. Of course, these spacers could also be constituted by added parts.
  • FIG 3 a perspective view and partially in section of three superimposed diffusers.
  • the diffuser rings 20a shown in the upper part of Figure 3 are seen in longitudinal section.
  • the slots 29 formed at the end of the frame 21a In the embodiment described, there are four slots 29 which determine four passages 31 for the liquid. Of course, this number could be different depending on another embodiment. One could for example provide three slots 29 only.
  • the orientation of two consecutive rings with respect to each other is indifferent.
  • the lower diffuser ring 20a shown in the lower part of Figure 3 is seen from the outside. Note the passage section left free between two consecutive rings.
  • the tube 7 has a polygonal outer section, for example square. This shape allows to clear four passages 33, between the faces of the square and the internal bore of the frame 21a. Four holes 13 located at 90 ° from each other are drilled in each of the faces of the square. Each orifice 13 opens into a passage 33. It is noted that the orientation of the diffuser ring 20a relative to the square of the diffuser holder tube is indifferent. Indeed, whatever this orientation, there is a sufficient passage section for the liquid. The tube 7 also ensures the centering of the diffuser rings 20a on the tops of the square.
  • the outer rings 23a ( Figures 2 and 3) have a generally cylindrical shape of circular section. They have a shallow groove 23b of rounded profile on its outer surface.
  • the upper and lower faces 23c of the ring 23a form aveç the axis of the tube 7, and therefore with the axis of the diffusers, a re-entrant angle, that is to say less than 90 °. For example, this angle can be equal to 75 °.
  • the faces of two successive rings 23a move closer together and leave an outlet space for the fluid which is narrower than the inlet space as can be seen in FIGS. 2 and 3. These edges thus form a kind lip.
  • the rings 23a are made of a material which is compatible with that of the bladder, so that the latter does not wear out or deteriorate when it is applied to the outer periphery of the rings. They are made of the same material as the latter, namely elastomer.
  • elastomer rings 23a are molded directly on the tube 7, thus constituting a tube in one piece which could also be made entirely of elastomer for low pressure applications.
  • the frame 21b has a part male conical 25 connected by a round.
  • the outer ring 23b has an inner cone 27 whose diameter is larger than the diameter of the male cone 25 so as to leave a space between these two cones when the rings are mounted on the tube 7.
  • the spacing between two successive rings is ensured by means of slots 29 made on the terminal part of the frame. The liquid flows through the space left free between the spacers 29.
  • the tube 7 causes a low pressure drop. It is unclogged. It does not filter out the impurities that may be contained in the liquid, due to the large passage section offered to the fluid. It brings the fluid into the bladder 9 at reduced speed; it does not act as a filter or an oil trap; it supports without permanent deformation and without degradation of fluid / fluid back pressures greater than 250 bars; it does not cause any deterioration in the bladder when the latter is applied to the tube under the effect of a back pressure greater than 250 bars.

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)
  • Pipe Accessories (AREA)
EP87201090A 1983-08-04 1984-07-27 Akustisches Filter Expired - Lifetime EP0244044B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8312895A FR2550283B1 (fr) 1983-08-04 1983-08-04 Accumulateur hydropneumatique
FR8312895 1983-08-04

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP84401586A Division-Into EP0134738B1 (de) 1983-08-04 1984-07-27 Hydropneumatischer Speicher
EP84401586A Division EP0134738B1 (de) 1983-08-04 1984-07-27 Hydropneumatischer Speicher

Publications (3)

Publication Number Publication Date
EP0244044A2 true EP0244044A2 (de) 1987-11-04
EP0244044A3 EP0244044A3 (en) 1988-10-12
EP0244044B1 EP0244044B1 (de) 1991-05-08

Family

ID=9291409

Family Applications (2)

Application Number Title Priority Date Filing Date
EP84401586A Expired EP0134738B1 (de) 1983-08-04 1984-07-27 Hydropneumatischer Speicher
EP87201090A Expired - Lifetime EP0244044B1 (de) 1983-08-04 1984-07-27 Akustisches Filter

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP84401586A Expired EP0134738B1 (de) 1983-08-04 1984-07-27 Hydropneumatischer Speicher

Country Status (5)

Country Link
US (2) US4638838A (de)
EP (2) EP0134738B1 (de)
JP (1) JPS6053201A (de)
DE (2) DE3484568D1 (de)
FR (1) FR2550283B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9446570B2 (en) 2011-07-08 2016-09-20 Livedo Corporation Sheet article manufacturing apparatus

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US4610369A (en) * 1985-10-07 1986-09-09 Mercier Jacques H Pressure vessel
US4872486A (en) * 1987-04-07 1989-10-10 Nobuyuki Sugimura Accumulator having inclined communication holes
JPH0645681Y2 (ja) * 1987-04-07 1994-11-24 宣行 杉村 ブラダ内に入子を設けたアキュムレータ
US4949750A (en) * 1988-10-28 1990-08-21 Peerless Manufacturing Company Surge reliever relief valve
JPH0398395U (de) * 1990-01-26 1991-10-11
IT1261305B (it) * 1993-06-22 1996-05-14 Gevipi Ag Dispositivo smorzatore di vibrazioni e di rumore, per impianti idraulici
US5584512A (en) * 1993-10-07 1996-12-17 Carstensen; Kenneth J. Tubing interconnection system with different size snap ring grooves
US5536028A (en) * 1994-09-28 1996-07-16 Howard; Durrell U. Power centering compensator for vehicle steering systems
US6131613A (en) * 1996-08-26 2000-10-17 Aeroquip Corporation Noise suppressor
EP0918969B1 (de) * 1996-08-26 2001-05-16 Eaton Aeroquip Inc. Schalldämpfer für hydraulische systeme
DE19747158A1 (de) * 1997-10-24 1999-04-29 Wolf Woco & Co Franz J Pulsationsdämpfer
FR2772099B1 (fr) * 1997-12-05 2000-02-25 Peugeot Sphere ou accumulateur a membrane, par exemple pour suspension hydropneumatique de vehicule automobile
US6483778B1 (en) 1999-04-02 2002-11-19 Raytheon Company Systems and methods for passively compensating transducers
AU7772600A (en) * 1999-10-11 2001-04-23 Silentor Holding A/S A silencer
US6267395B1 (en) 1999-10-18 2001-07-31 Durrell U. Howard Vehicle steering compensator with air actuated trim mechanism
US6860296B2 (en) * 2001-06-27 2005-03-01 Winston B. Young High flow nozzle system for flow control in bladder surge tanks
US6478052B1 (en) * 2001-07-25 2002-11-12 Jeff Alan Conley Pulsation damping assembly and method
US6530585B1 (en) 2001-11-16 2003-03-11 Durrell U Howard Vehicle steering stabilizer with detent ramp in rotary plate
US6817620B1 (en) 2002-08-02 2004-11-16 Durrell U Howard Precision steer wheel control system with internal solenoid
US7207580B2 (en) * 2002-08-02 2007-04-24 Howard Durrell U Precision steer wheel control system with remote trim valve assembly
DE10241883B4 (de) * 2002-09-10 2012-06-21 Andreas Stihl Ag & Co. Handgeführtes Arbeitsgerät mit einem Befestigungsstift für einen Abgasschalldämpfer
US6935460B2 (en) * 2003-05-21 2005-08-30 Airsep Corporation Noise muffler for oxygen concentrator
US7278514B1 (en) * 2003-10-17 2007-10-09 The United States Of America As Represented By The Secretary Of The Navy Acoustic noise filter
SE526992C2 (sv) * 2004-03-12 2005-12-06 Atlas Copco Constr Tools Ab Hydraulisk tryckackumulator
US20070056649A1 (en) * 2005-09-09 2007-03-15 Chang Hsu P Pressure container with replaceable bellows
US7806419B1 (en) 2005-10-28 2010-10-05 Howard Durrell U Steer wheel control system with reciprocating cylinder
US7219908B1 (en) 2005-10-28 2007-05-22 Howard Durrell U Steer wheel control system with stationary piston and reciprocating cylinder
US7472720B2 (en) * 2006-10-30 2009-01-06 Young Engineering & Manufacturing, Inc. High flow nozzle system for flow control in bladder surge tanks
DE102007012527A1 (de) * 2007-03-15 2008-09-18 Alpha Fluid Hydrauliksysteme Müller GmbH Diffusorbaugruppe
DE102008061221A1 (de) * 2008-12-09 2010-06-10 Hydac Technology Gmbh Hydrospeicher, insbesondere Balgspeicher
DE102010025627A1 (de) 2010-06-30 2012-01-05 Hydac Technology Gmbh Hydropneumatischer Blasenspeicher
WO2012053949A1 (en) * 2010-10-20 2012-04-26 Värmebaronen Ab Flow control
US9352251B2 (en) * 2014-03-12 2016-05-31 Newkota Services and Rentals, LLC Open top tank with tandem diffusers
DK178247B1 (en) * 2014-03-14 2015-10-05 Eyecular Technologies Aps Inlet stratification device
US9683700B2 (en) * 2014-05-20 2017-06-20 Steelhead Composites, Llc. Metallic liner pressure vessel comprising polar boss
JP6560098B2 (ja) * 2015-10-27 2019-08-14 古河ロックドリル株式会社 油圧ダウンザホールドリルのアキュムレータ
FR3074541B1 (fr) * 2017-12-01 2019-10-18 Safran Aircraft Engines Accumulateur integre a une canalisation de carburant
EP4242105B1 (de) * 2022-03-11 2025-08-20 Airbus Operations GmbH Ein wasserversorgungssystem für ein flugzeug, umfassend ein puffer zum speichern von flüssigkeit unter verbraucherdruck
US11953154B2 (en) 2022-04-22 2024-04-09 Amtrol Licensing Inc. Method and system for pressure relief in a multi chamber vessel

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FR1533447A (fr) * 1967-06-09 1968-07-19 Valve
FR2110720A5 (de) * 1970-10-28 1972-06-02 Mercier J
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9446570B2 (en) 2011-07-08 2016-09-20 Livedo Corporation Sheet article manufacturing apparatus

Also Published As

Publication number Publication date
EP0244044A3 (en) 1988-10-12
FR2550283A1 (fr) 1985-02-08
EP0134738A2 (de) 1985-03-20
DE3471979D1 (en) 1988-07-14
EP0134738A3 (en) 1985-07-10
US4768616A (en) 1988-09-06
FR2550283B1 (fr) 1988-03-18
JPS6053201A (ja) 1985-03-26
EP0244044B1 (de) 1991-05-08
DE3484568D1 (de) 1991-06-13
US4638838A (en) 1987-01-27
EP0134738B1 (de) 1988-06-08

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