FR2428191A1 - Dispositif destine a reduire les resonances provoquees par le courant dans un diffuseur - Google Patents

Dispositif destine a reduire les resonances provoquees par le courant dans un diffuseur

Info

Publication number
FR2428191A1
FR2428191A1 FR7914415A FR7914415A FR2428191A1 FR 2428191 A1 FR2428191 A1 FR 2428191A1 FR 7914415 A FR7914415 A FR 7914415A FR 7914415 A FR7914415 A FR 7914415A FR 2428191 A1 FR2428191 A1 FR 2428191A1
Authority
FR
France
Prior art keywords
diffuser
current
resonances caused
reducing resonances
reducing
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
FR7914415A
Other languages
English (en)
Other versions
FR2428191B1 (fr
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of FR2428191A1 publication Critical patent/FR2428191A1/fr
Application granted granted Critical
Publication of FR2428191B1 publication Critical patent/FR2428191B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/08—Influencing flow of fluids of jets leaving an orifice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Details Of Valves (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Catching Or Destruction (AREA)

Abstract

Dispositif destiné à réduire les résonances provoquées par un courant dans un diffuseur de soupape. La section transversale de la sortie du diffuseur est modifiée pour en modifier l'impédance acoustique. Cette modification est constituée par des pièces rapportées disposées sur la périphérie externe de la sortie du diffuseur. Applications aux turbomachines.
FR7914415A 1978-06-08 1979-06-06 Dispositif destine a reduire les resonances provoquees par le courant dans un diffuseur Granted FR2428191A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH627278A CH635171A5 (de) 1978-06-08 1978-06-08 Einrichtung an einem diffusor zum unterdruecken von resonanzen.

Publications (2)

Publication Number Publication Date
FR2428191A1 true FR2428191A1 (fr) 1980-01-04
FR2428191B1 FR2428191B1 (fr) 1981-01-30

Family

ID=4306957

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7914415A Granted FR2428191A1 (fr) 1978-06-08 1979-06-06 Dispositif destine a reduire les resonances provoquees par le courant dans un diffuseur

Country Status (5)

Country Link
US (1) US4298088A (fr)
CH (1) CH635171A5 (fr)
DE (2) DE2827782A1 (fr)
FR (1) FR2428191A1 (fr)
SE (1) SE441381B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999063268A1 (fr) * 1998-06-04 1999-12-09 Siemens Aktiengesellschaft Injecteur de combustible

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396350A (en) * 1980-12-24 1983-08-02 Kinney Calvin L Pump isolation valve
US4580657A (en) * 1983-06-16 1986-04-08 Donaldson Company, Inc. Integral fluted tube for sound suppression and exhaust ejection
US5123501A (en) * 1988-10-21 1992-06-23 Donaldson Company, Inc. In-line constricted sound-attenuating system
US5663535A (en) * 1995-08-28 1997-09-02 Venturedyne, Ltd. Sound attenuator for HVAC systems
US5929396A (en) * 1997-07-29 1999-07-27 Awad; Elias A. Noise reducing diffuser
US5984208A (en) * 1997-11-03 1999-11-16 Caterpillar Inc. Fuel injector having a press-in valve seat
US9558855B2 (en) * 2011-11-10 2017-01-31 Bwxt Nuclear Energy, Inc. Pressurized water reactor with upper plenum including cross-flow blocking weir
US9739290B2 (en) * 2014-01-16 2017-08-22 Ingersoll-Rand Company Compressor system with pressure pulsation dampener and check valve
US9951761B2 (en) * 2014-01-16 2018-04-24 Ingersoll-Rand Company Aerodynamic pressure pulsation dampener

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1562524A (fr) * 1967-05-23 1969-04-04
DE2519600A1 (de) * 1975-05-02 1976-11-11 Bbc Brown Boveri & Cie Verfahren und einrichtung zum verstellen eines eine vorsteuerung aufweisenden turbomaschinen-regelventils

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7410642U (de) * 1974-08-14 Junkers & Co Gmbh Vorrichtung zur Dämpfung von Strömungsgeräuschen
US2795931A (en) * 1950-10-11 1957-06-18 Snecma Aerodynamic valve arrangement
US2987136A (en) * 1955-03-31 1961-06-06 Power Jets Res & Dev Ltd Apparatus for reducing noise
US2882991A (en) * 1955-09-02 1959-04-21 Claud R Killian Jet engine silencer
US2873142A (en) * 1955-09-16 1959-02-10 Svenska Flygmotor Aktiebolaget Diffuser for sub-critical flow
US2956400A (en) * 1957-06-05 1960-10-18 Curtiss Wright Corp Internal-ribbed exhaust nozzle for jet propulsion devices
US3289921A (en) * 1965-10-08 1966-12-06 Caterpillar Tractor Co Vaneless diffuser
DE1802757C3 (de) * 1968-10-10 1978-06-22 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Fluidmechanisch durch Luftdruckunterschiede gesteuertes Element für eine Wasch- oder Geschirrspulmaschine
US3658437A (en) * 1970-03-27 1972-04-25 Caterpillar Tractor Co Diffuser including vaneless and vaned sections
US3995662A (en) * 1972-06-16 1976-12-07 Chandler Evans Inc. Fluidic switches
US3733903A (en) * 1972-08-09 1973-05-22 Gen Signal Corp Differential pressure producing flow meter
US3733902A (en) * 1972-08-09 1973-05-22 Gen Signal Corp Minimum length high quality differential pressure producing flow meter
DE2263956C2 (de) * 1972-12-29 1982-09-09 Gulde-Regelarmaturen-Kg, 6700 Ludwigshafen Vorrichtung zur Verminderung des Schalles einer mit einem Drosselgerät versehenen, von Gasen durchströmten Leitung
US3910715A (en) * 1973-06-27 1975-10-07 Worthington Pump Int Side inlet means for centrifugal pumps
DE2410231C3 (de) * 1974-03-04 1984-01-19 Meier, Gerd E.A., Dipl.-Phys. Dr., 3400 Goettingen Einrichtung zur Verminderung von Strömungsgeräuschen in Rohrströmungen
US3902601A (en) * 1974-03-14 1975-09-02 Townley Ind Plastics Inc One piece cyclone cone
CH584349A5 (fr) * 1975-04-30 1977-01-31 Bbc Brown Boveri & Cie
US3968931A (en) * 1975-10-06 1976-07-13 Combustion Engineering, Inc. Pressure jet atomizer
GB1573926A (en) * 1976-03-24 1980-08-28 Rolls Royce Fluid flow diffuser

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1562524A (fr) * 1967-05-23 1969-04-04
DE2519600A1 (de) * 1975-05-02 1976-11-11 Bbc Brown Boveri & Cie Verfahren und einrichtung zum verstellen eines eine vorsteuerung aufweisenden turbomaschinen-regelventils

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999063268A1 (fr) * 1998-06-04 1999-12-09 Siemens Aktiengesellschaft Injecteur de combustible
US6676048B1 (en) 1998-06-04 2004-01-13 Siemens Aktiengesellschaft Fuel injector

Also Published As

Publication number Publication date
SE7904898L (sv) 1979-12-09
SE441381B (sv) 1985-09-30
US4298088A (en) 1981-11-03
CH635171A5 (de) 1983-03-15
DE7818985U1 (de) 1980-04-03
DE2827782A1 (de) 1979-12-13
FR2428191B1 (fr) 1981-01-30

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Legal Events

Date Code Title Description
ST Notification of lapse