EP1213538A3 - Exhaust gas system with Helmholtz resonator - Google Patents

Exhaust gas system with Helmholtz resonator Download PDF

Info

Publication number
EP1213538A3
EP1213538A3 EP01811076A EP01811076A EP1213538A3 EP 1213538 A3 EP1213538 A3 EP 1213538A3 EP 01811076 A EP01811076 A EP 01811076A EP 01811076 A EP01811076 A EP 01811076A EP 1213538 A3 EP1213538 A3 EP 1213538A3
Authority
EP
European Patent Office
Prior art keywords
helmholtz resonator
exhaust gas
gas system
flow
helmholtz
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
EP01811076A
Other languages
German (de)
French (fr)
Other versions
EP1213538B1 (en
EP1213538A2 (en
Inventor
Günter Kudernatsch
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.)
General Electric Technology GmbH
Original Assignee
ABB Turbo Systems AG
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 ABB Turbo Systems AG filed Critical ABB Turbo Systems AG
Publication of EP1213538A2 publication Critical patent/EP1213538A2/en
Publication of EP1213538A3 publication Critical patent/EP1213538A3/en
Application granted granted Critical
Publication of EP1213538B1 publication Critical patent/EP1213538B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J13/00—Fittings for chimneys or flues 
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/30—Exhaust heads, chambers, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames
    • F23M20/005—Noise absorbing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/13003—Means for reducing the noise in smoke conducing ducts or systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Chimneys And Flues (AREA)

Abstract

Zur Dämpfung der tiefen Frequenzen in einem Abgassystem (10) für Industriegasturbinen mit einer Abgasleitung (12) und einem daran anschliessenden Kamin (14), welche zusammen einen durchgängigen Strömungskanal (16) bilden, wird ein Helmholtz-Resonator (24, 24', 24", 24a) mittels eines Absorptionsschalldämpfers (36) von der Strömung (S) akustisch transparent abgeschirmt am Strömungskanal (16) angeordnet.

Figure 00000001
A Helmholtz resonator (24, 24 ', 24 ", 24a) by means of an absorption muffler (36) from the flow (S) in an acoustically transparent manner on the flow channel (16).
Figure 00000001
EP01811076A 2000-12-08 2001-11-08 Exhaust gas system with Helmholtz resonator Expired - Lifetime EP1213538B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH20002400 2000-12-08
CH24002000 2000-12-08

Publications (3)

Publication Number Publication Date
EP1213538A2 EP1213538A2 (en) 2002-06-12
EP1213538A3 true EP1213538A3 (en) 2002-07-31
EP1213538B1 EP1213538B1 (en) 2006-09-06

Family

ID=4569022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01811076A Expired - Lifetime EP1213538B1 (en) 2000-12-08 2001-11-08 Exhaust gas system with Helmholtz resonator

Country Status (3)

Country Link
US (1) US6705428B2 (en)
EP (1) EP1213538B1 (en)
DE (1) DE50110932D1 (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10247550A1 (en) * 2002-10-11 2004-04-22 Werner, Jürgen Radial fan for leaf and waste vacuum, leaf blower or Laubladegeräte
US6698390B1 (en) 2003-01-24 2004-03-02 Visteon Global Technologies, Inc. Variable tuned telescoping resonator
ITTO20031013A1 (en) * 2003-12-16 2005-06-17 Ansaldo Energia Spa THERMO ACOUSTIC INSTABILITY DAMPING SYSTEM IN A COMBUSTOR DEVICE FOR A GAS TURBINE.
EP1559874B1 (en) * 2004-02-02 2013-07-31 Siemens Aktiengesellschaft Diffuser and turbine
US20060059801A1 (en) * 2004-09-15 2006-03-23 Quality Research Development & Consulting, Inc. Acoustically intelligent structures with resonators
US7104243B2 (en) 2005-02-17 2006-09-12 Ford Global Technologies, Llc Reducing acoustic noise of an engine having electromechanical valves
EP1913242B1 (en) * 2005-08-08 2008-10-29 Alstom Technology Ltd Sound absorber for gas turbine installations
US7413053B2 (en) * 2006-01-25 2008-08-19 Siemens Power Generation, Inc. Acoustic resonator with impingement cooling tubes
US7412889B2 (en) * 2006-02-28 2008-08-19 Caterpillar Inc. System and method for monitoring a filter
DE102006026969A1 (en) * 2006-06-09 2007-12-13 Rolls-Royce Deutschland Ltd & Co Kg Gas turbine combustor wall for a lean-burn gas turbine combustor
DE202007017770U1 (en) * 2007-12-20 2009-04-23 Kutzner + Weber Gmbh Gas discharge arrangement
US9275628B2 (en) * 2008-05-05 2016-03-01 Bonnie S. Schnitta Tunable frequency acoustic structures
CH699322A1 (en) 2008-08-14 2010-02-15 Alstom Technology Ltd METHOD FOR SETTING A Helmholtz resonator AND HELMHOLTZ RESONATOR FOR IMPLEMENTING THE PROCESS.
RU2468217C2 (en) * 2011-01-21 2012-11-27 Закрытое акционерное общество "Концерн "Струйные технологии" Resonant sound damper of reflecting type
EP2693927B1 (en) 2011-04-07 2019-03-27 Excel Dryer, Inc. Sanitizing hand dryer
US9421291B2 (en) 2011-05-12 2016-08-23 Fifth Third Bank Hand dryer with sanitizing ionization assembly
EP2623732A1 (en) * 2012-02-02 2013-08-07 Siemens Aktiengesellschaft Assembly and method for dampening acoustic vibrations in such an assembly
US9039352B2 (en) 2012-11-05 2015-05-26 General Electric Company Sound attenuating chimney element for a turbomachine system
US9284963B2 (en) 2013-01-28 2016-03-15 American Dryer, Inc. Blower assembly for hand dryer, with helmholtz motor mount
GB2516286B (en) * 2013-07-18 2016-08-17 Rolls Royce Plc A duct and method for damping pressure waves caused by thermoacoustic instability
CN105091006B (en) * 2014-05-15 2017-08-11 厦门嘉达声学技术有限公司 Rain-proof noise elimination blast cap
CN107166822A (en) * 2017-07-06 2017-09-15 中国计量大学 The adjusting method of air conditioner electronic expansion valve noise
US10815894B2 (en) * 2017-10-19 2020-10-27 General Electric Company Modular acoustic blocks and acoustic liners constructed therefrom
US10626886B2 (en) * 2018-04-18 2020-04-21 Honeywell International Inc. Sound attenuation apparatus and methods
US11713904B2 (en) * 2019-10-01 2023-08-01 Johnson Controls Tyco IP Holdings LLP Tunable sound attenuating modules
RU200098U1 (en) * 2020-01-10 2020-10-06 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный энергетический университет" STEAM EMISSION SILENCER

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2240709A1 (en) * 1971-09-08 1973-04-26 Sncf SILENCER FOR THE EXHAUST OF A TURBO ENGINE
FR2378176A1 (en) * 1977-01-19 1978-08-18 Bertin & Cie Gas turbine exhaust silencer - has diverging entry and discharge sections with intermediate straight section having centrally supported blunt-ended tube
WO1989008909A1 (en) * 1988-03-10 1989-09-21 Infrasonik Ab Sound reflector
DE4414232A1 (en) * 1994-04-23 1995-10-26 Abb Management Ag Device for damping thermoacoustic vibrations in a combustion chamber
EP0723123A1 (en) * 1995-01-23 1996-07-24 Nefit Fasto B.V. Sound-damped combustion system, and damper for such a system
DE19612987A1 (en) * 1995-03-23 1996-09-26 Vaillant Joh Gmbh & Co Central heating, fuel burning heater

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE892216C (en) 1943-03-28 1953-10-05 Siemens Ag Device for regulating the voltage on the electrodes of a high-frequency treatment system
US2940537A (en) 1957-01-04 1960-06-14 Gen Sound Control Inc Means and techniques for silencing sound energy
US3688865A (en) 1970-11-17 1972-09-05 Cloyd D Smith Jet engine noise suppressor
US3762498A (en) 1971-07-22 1973-10-02 Gen Electric Gas turbine exhaust silencer
US3709319A (en) 1971-10-06 1973-01-09 Gen Electric Resonator chamber silencer for gas turbine
US3738448A (en) 1971-12-13 1973-06-12 Bolt Beranek & Newman Sound silencing method and apparatus
US4106587A (en) 1976-07-02 1978-08-15 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Sound-suppressing structure with thermal relief
US4371054A (en) 1978-03-16 1983-02-01 Lockheed Corporation Flow duct sound attenuator
US4645032A (en) 1985-09-05 1987-02-24 The Garrett Corporation Compact muffler apparatus and associated methods
US5162620A (en) 1989-11-28 1992-11-10 Allied-Signal Inc. Dual flow turbine engine muffler
DE4009072A1 (en) 1990-03-21 1991-09-26 Kaefer Isoliertechnik Steel chimney fitted with silencer - has under chamber mounted with axis horizontal
EP0576717A1 (en) 1992-07-03 1994-01-05 Abb Research Ltd. Gas turbine combustor
US5276291A (en) 1992-07-10 1994-01-04 Norris Thomas R Acoustic muffler for high volume fluid flow utilizing Heimholtz resonators with low flow resistance path
DE4330129C2 (en) 1993-09-06 2002-08-29 Bayerische Motoren Werke Ag Exhaust system of an internal combustion engine
DE4419604A1 (en) 1994-06-06 1995-12-07 Werner Siegle Chimney with rain collector for silencers, gas turbines and recuperators
US5644918A (en) 1994-11-14 1997-07-08 General Electric Company Dynamics free low emissions gas turbine combustor
MX9801283A (en) * 1995-08-17 1998-05-31 Arvin Ind Inc Sound attenuator with throat tuner.
GB9522724D0 (en) * 1995-11-06 1996-01-10 Acts Ltd A noise attenuator for an induction system or an exhaust system
DE19747245C1 (en) 1997-10-25 1999-04-29 Bayerische Motoren Werke Ag Internal combustion engine with an exhaust gas recirculation device, in particular a diesel internal combustion engine
US6082487A (en) * 1998-02-13 2000-07-04 Donaldson Company, Inc. Mufflers for use with engine retarders; and methods
EP0974788B1 (en) 1998-07-23 2014-11-26 Alstom Technology Ltd Device for directed noise attenuation in a turbomachine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2240709A1 (en) * 1971-09-08 1973-04-26 Sncf SILENCER FOR THE EXHAUST OF A TURBO ENGINE
FR2378176A1 (en) * 1977-01-19 1978-08-18 Bertin & Cie Gas turbine exhaust silencer - has diverging entry and discharge sections with intermediate straight section having centrally supported blunt-ended tube
WO1989008909A1 (en) * 1988-03-10 1989-09-21 Infrasonik Ab Sound reflector
DE4414232A1 (en) * 1994-04-23 1995-10-26 Abb Management Ag Device for damping thermoacoustic vibrations in a combustion chamber
EP0723123A1 (en) * 1995-01-23 1996-07-24 Nefit Fasto B.V. Sound-damped combustion system, and damper for such a system
DE19612987A1 (en) * 1995-03-23 1996-09-26 Vaillant Joh Gmbh & Co Central heating, fuel burning heater

Also Published As

Publication number Publication date
EP1213538B1 (en) 2006-09-06
US20020108810A1 (en) 2002-08-15
US6705428B2 (en) 2004-03-16
EP1213538A2 (en) 2002-06-12
DE50110932D1 (en) 2006-10-19

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