EP1596130A1 - Appareil pour absorber les oscillations thermo-acoustiques dans une chambre de combustion, présentant une fréquence de résonance variable - Google Patents

Appareil pour absorber les oscillations thermo-acoustiques dans une chambre de combustion, présentant une fréquence de résonance variable Download PDF

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Publication number
EP1596130A1
EP1596130A1 EP04011552A EP04011552A EP1596130A1 EP 1596130 A1 EP1596130 A1 EP 1596130A1 EP 04011552 A EP04011552 A EP 04011552A EP 04011552 A EP04011552 A EP 04011552A EP 1596130 A1 EP1596130 A1 EP 1596130A1
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EP
European Patent Office
Prior art keywords
resonator
wall
gas turbine
volume
combustion chamber
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
EP04011552A
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German (de)
English (en)
Other versions
EP1596130B1 (fr
Inventor
Sven Dr. Bethke
Tobias Dr. Buchal
Michael Dr. Huth
Hans-Jürgen Dr. Kiesow
Harald Nimptsch
Bernd Dr. Prade
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.)
Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP04011552.9A priority Critical patent/EP1596130B1/fr
Publication of EP1596130A1 publication Critical patent/EP1596130A1/fr
Application granted granted Critical
Publication of EP1596130B1 publication Critical patent/EP1596130B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/00014—Reducing thermo-acoustic vibrations by passive means, e.g. by Helmholtz resonators

Definitions

  • the present invention relates to a device for damping of acoustic vibrations in combustion chambers and in particular a device for damping acoustic vibrations in gas turbines with adjustable resonator frequency.
  • a gas turbine plant in the simplest case comprises a compressor, a combustion chamber and a turbine.
  • the compressor there is a compression of sucked air, which subsequently a fuel is added.
  • the combustion chamber there is a combustion of the mixture, wherein the Combustion gases are supplied to the turbine, of the Combustion exhausted energy and into mechanical energy is implemented.
  • thermoacoustic Vibrations can increase. It can become a rocking interaction between thermal and acoustic Disruptions come, the high loads of the combustion chamber and can cause rising emissions.
  • thermoacoustic vibrations therefore in the prior art e.g. Helmholtz resonators for Damping used - within a certain frequency band - Effectively dampen the amplitude of vibrations.
  • Such Helmholtz resonators attenuate depending on the cross-sectional area of the connecting tube and the resonator volume in particular the amplitude of vibrations with the Helmholtz frequency. For more different frequencies leaves the effect strong with increasing frequency difference to.
  • thermoacoustic vibrations At e.g. Use of different fuels, in the partial load range or when you start the system, the Frequencies under which amplified thermoacoustic vibrations occur. At the same damping device then this does not work in the most favorable way Operating point and can the occurring thermoacoustic No longer dampen vibrations optimally. The remaining Thermoacoustic vibrations lead to a higher emission of pollutants and to a higher noise level.
  • thermoacoustic vibrations in combustion chambers and in particular a device for damping of thermoacoustic vibrations in gas turbines
  • Resonator frequency for damping thermoacoustic oscillations is adjustable.
  • An inventive device for damping thermoacoustic Vibrations in combustion chambers include at least a resonator. At least part of a wall of the resonator is mobile to adjust a resonator volume.
  • the invention offers many advantages.
  • it is with a device according to the invention possible, with a simple Construction of the resonator adjustability of the resonator frequency to ensure. Complicated internals like in the prior art are not needed.
  • the basic construction of the resonator according to the invention is easy.
  • the cross section does not have to be known from the previously known Resonators differ, allowing for structural adjustments not necessary for receiving the resonator are.
  • the device according to the invention in by the Design frequency different vibrations higher damping Properties after the resonator volume accordingly is adapted.
  • Conventional resonators offer this adaptability Not.
  • the resonator is essentially a Helmholtz resonator educated. This is advantageous because Helmholtz resonators offer many possibilities in the construction.
  • c is the speed of sound in the medium
  • V is the volume of the resonator chamber
  • L is the length
  • S is the area of the resonator tube between the resonator chamber and the surroundings.
  • the volume V thus influences the resonant frequency of the resonator. Increasing the volume causes a reduction in the resonator frequency and vice versa.
  • the resonator frequency can be adapted to changing conditions.
  • the movable part of the wall in particular longitudinally displaceable.
  • the mobile part of the wall can, for example. be threaded. Then, by a simple Screwing the longitudinal displacement of the mobile Part of the wall causes and so the volume of the resonator be set exactly. Such a screwing may also be possible during operation, which is offers particularly great advantages.
  • the portable Part formed as part of the rear wall. This can according to the previously described training also performed screwed be. It is also possible and preferred that essentially the entire back wall of the resonator is mobile and is designed in particular longitudinally movable. At a e.g. essentially cylindrical resonator chamber can by moving the back wall facing the resonator tube the volume of the resonator chamber is very effective to be influenced.
  • the portable Part of the wall designed as a kind of piston.
  • the resonator cavity may be a substantially cylindrical tube be formed, in which of the resonator tube opposite Side a piston or the like introduced is to change the volume of the resonator. Then can a linear movement to control the resonator volume suffice. Furthermore, a linear relationship can arise between the path traveled by the wall or the piston and Resonator volume result.
  • a movement or adjusting device by means of which the mobile part of the wall is hydraulically or electrically movable.
  • the mobile part of the wall by means of the movement device controllable. Then the portable part in Dependence on a predefined manipulated variable one position taking. In other developments is an automatic Adjustment of the mobile part. Especially preferred is also a control device, depending on of measured resonances an automatic adjustment of the movable part of the wall causes, so that within the control range ensures effective damping can be.
  • the invention relates to a gas turbine with at least a combustion chamber and at least one damping device for damping acoustic vibrations in at least a combustion chamber, wherein a frequency of the damping device is adjustable. At least part of a wall of the Resonator is locatable to a resonator volume too change and to set a resonator frequency.
  • the mobile part of the wall the resonator accessible from outside the housing of the gas turbine.
  • the resonator may be at least partially outside be arranged of the housing of the gas turbine. It is also possible that the resonator is provided inside the housing is, and that the mobile part of the wall from the outside with e.g. a tool is accessible.
  • Fig. 1 shows a first embodiment of an inventive Device in a highly schematic representation.
  • Fig. 2 shows a second embodiment of an inventive Device in a highly schematic representation.
  • FIG. 1 shows a first embodiment of an inventive Device 1 for damping acoustic Vibrations in a combustion chamber 2 of a gas turbine 12 shown.
  • the device 1 is here in the example as a Helmholtz resonator 3 executed.
  • the Helmholtz resonator 3 has a Resonator neck 16, over which the Helmholtz resonator 3 with a Combustion chamber of a gas turbine in conjunction, and a Resonator 17 on.
  • the Helmholtz resonator has a resonator volume 5th
  • the resonator 3 is cylindrically symmetric executed with a longitudinal or central axis 7. But there are also embodiments possible, the no have such pronounced symmetry.
  • the resonator space 17 becomes toward the sides of the cylindrical Surrounded side wall 10.
  • a part 6 of the wall 4 is movable provided to change the size of the resonator volume and to adjust the resonator frequency.
  • the back wall 9 is displaced along the longitudinal axis 7. Will the rear wall in Moved towards the combustion chamber 2, so is the resonator volume 5 reduced and increases the resonator frequency. If, on the other hand, the rear wall is moved out and the resonator volume increases, so the resonant frequency of the resonator 3 decreased. About a change in location of the rear wall 9 is an effective change in the resonant frequency of the resonator possible, so that the resonator 3 to be damped Vibrations is customizable.
  • the rear wall 9 and the inner sides of the side walls 10 can be provided with a thread 8, so that by a or unscrewing the rear wall 9 is a change in location, to adjust the resonance frequency.
  • the adjustment can be done manually with a suitable tool or by hand after opening the turbine housing 13 done. This may only be during standstill the machine to drive the gas turbine to e.g. a changed one To adjust fuel composition.
  • this embodiment is the adaptation with a relatively low installation costs feasible, especially compared to the effort the replacement of entire resonators.
  • a controlled adjustment of the rear wall. 9 he follows.
  • the adjustment can also be automatic and also regulated respectively. It is possible, e.g. an electric motor that the Rear wall 9 in the thread 8 rotates to the resonator 5 adjust. Also, the use of a hydraulic adjusting device is possible. Through a controlled automatic adjustment the resonator volume is the expense for subsequent Setting the resonator volume particularly low held.
  • the resonator 3 in the interior 15 of a gas turbine 12 is arranged.
  • the Resonator 5 partially in the area 15 within the gas turbine and also partially in the area 14 outside the gas turbine 12 arranged.
  • the resonator 3 comprises a first resonance space 3a, which is disposed within the housing 13 of the gas turbine 12 is, and a second resonance space 3b, which in the area 14 is arranged outside of the housing 13.
  • Both resonance chambers 3a and 3b are interconnected by a connection channel 3c connected together and form the resonant cavity of the resonator Third
  • the rear wall 9 is designed here in the example as a piston 11, which is provided slidably within the resonator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
EP04011552.9A 2004-05-14 2004-05-14 Appareil pour absorber les oscillations thermo-acoustiques dans une chambre de combustion, présentant une fréquence de résonance variable Expired - Lifetime EP1596130B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04011552.9A EP1596130B1 (fr) 2004-05-14 2004-05-14 Appareil pour absorber les oscillations thermo-acoustiques dans une chambre de combustion, présentant une fréquence de résonance variable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04011552.9A EP1596130B1 (fr) 2004-05-14 2004-05-14 Appareil pour absorber les oscillations thermo-acoustiques dans une chambre de combustion, présentant une fréquence de résonance variable

Publications (2)

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EP1596130A1 true EP1596130A1 (fr) 2005-11-16
EP1596130B1 EP1596130B1 (fr) 2014-12-31

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EP04011552.9A Expired - Lifetime EP1596130B1 (fr) 2004-05-14 2004-05-14 Appareil pour absorber les oscillations thermo-acoustiques dans une chambre de combustion, présentant une fréquence de résonance variable

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104204677A (zh) * 2012-03-30 2014-12-10 阿尔斯通技术有限公司 装备有阻尼装置的燃烧器密封段
EP2860449A1 (fr) * 2013-10-09 2015-04-15 Alstom Technology Ltd Dispositif d'amortissement acoustique
WO2016044135A1 (fr) * 2014-09-15 2016-03-24 Alstom Technology Ltd Système de registre de chambre de combustion de type dôme
EP3410014A1 (fr) * 2017-05-31 2018-12-05 Ansaldo Energia S.p.A. Support de brique pour chambre de combustion d'une turbine à gaz
DE102005062284B4 (de) 2005-12-24 2019-02-28 Ansaldo Energia Ip Uk Limited Brennkammer für eine Gasturbine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9988958B2 (en) * 2014-12-01 2018-06-05 Siemens Aktiengesellschaft Resonators with interchangeable metering tubes for gas turbine engines

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020000343A1 (en) * 2000-05-26 2002-01-03 Paschereit Christian Oliver Apparatus for damping acoustic vibrations in a combustor
DE10058688A1 (de) 2000-11-25 2003-01-02 Alstom Switzerland Ltd Dämpferanordnung zur Reduktion von Brennkammerpulsationen
WO2003060381A1 (fr) 2002-01-16 2003-07-24 Alstom Technology Ltd Chambre de combustion et dispositif d'amortissement destine a reduire des pulsations de chambre de combustion dans un systeme de turbines a gaz

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020000343A1 (en) * 2000-05-26 2002-01-03 Paschereit Christian Oliver Apparatus for damping acoustic vibrations in a combustor
DE10058688A1 (de) 2000-11-25 2003-01-02 Alstom Switzerland Ltd Dämpferanordnung zur Reduktion von Brennkammerpulsationen
WO2003060381A1 (fr) 2002-01-16 2003-07-24 Alstom Technology Ltd Chambre de combustion et dispositif d'amortissement destine a reduire des pulsations de chambre de combustion dans un systeme de turbines a gaz

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005062284B4 (de) 2005-12-24 2019-02-28 Ansaldo Energia Ip Uk Limited Brennkammer für eine Gasturbine
CN104204677A (zh) * 2012-03-30 2014-12-10 阿尔斯通技术有限公司 装备有阻尼装置的燃烧器密封段
CN104204677B (zh) * 2012-03-30 2016-07-06 通用电器技术有限公司 装备有阻尼装置的燃烧器密封段
EP2860449A1 (fr) * 2013-10-09 2015-04-15 Alstom Technology Ltd Dispositif d'amortissement acoustique
JP2015075116A (ja) * 2013-10-09 2015-04-20 アルストム テクノロジー リミテッドＡＬＳＴＯＭ Ｔｅｃｈｎｏｌｏｇｙ Ｌｔｄ 音響減衰装置
CN104566455A (zh) * 2013-10-09 2015-04-29 阿尔斯通技术有限公司 声阻尼装置
US9334804B2 (en) 2013-10-09 2016-05-10 Alstom Technology Ltd Acoustic damping device
WO2016044135A1 (fr) * 2014-09-15 2016-03-24 Alstom Technology Ltd Système de registre de chambre de combustion de type dôme
EP3767177A1 (fr) * 2014-09-15 2021-01-20 Ansaldo Energia IP UK Limited Système de registre de chambre de combustion de type dôme
EP3410014A1 (fr) * 2017-05-31 2018-12-05 Ansaldo Energia S.p.A. Support de brique pour chambre de combustion d'une turbine à gaz

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Publication number Publication date
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